1 /*
2 *
3 * Copyright 2017 gRPC authors.
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 *
17 */
18
19 #include <deque>
20 #include <memory>
21 #include <mutex>
22 #include <numeric>
23 #include <set>
24 #include <sstream>
25 #include <string>
26 #include <thread>
27 #include <vector>
28
29 #include <grpc/grpc.h>
30 #include <grpc/support/alloc.h>
31 #include <grpc/support/log.h>
32 #include <grpc/support/string_util.h>
33 #include <grpc/support/time.h>
34 #include <grpcpp/channel.h>
35 #include <grpcpp/client_context.h>
36 #include <grpcpp/create_channel.h>
37 #include <grpcpp/server.h>
38 #include <grpcpp/server_builder.h>
39
40 #include "absl/strings/str_cat.h"
41 #include "absl/types/optional.h"
42
43 #include "src/core/ext/filters/client_channel/backup_poller.h"
44 #include "src/core/ext/filters/client_channel/parse_address.h"
45 #include "src/core/ext/filters/client_channel/resolver/fake/fake_resolver.h"
46 #include "src/core/ext/filters/client_channel/server_address.h"
47 #include "src/core/ext/filters/client_channel/xds/xds_api.h"
48 #include "src/core/lib/gpr/env.h"
49 #include "src/core/lib/gpr/tmpfile.h"
50 #include "src/core/lib/gprpp/map.h"
51 #include "src/core/lib/gprpp/ref_counted_ptr.h"
52 #include "src/core/lib/gprpp/sync.h"
53 #include "src/core/lib/iomgr/sockaddr.h"
54 #include "src/core/lib/security/credentials/fake/fake_credentials.h"
55 #include "src/cpp/client/secure_credentials.h"
56 #include "src/cpp/server/secure_server_credentials.h"
57
58 #include "test/core/util/port.h"
59 #include "test/core/util/test_config.h"
60 #include "test/cpp/end2end/test_service_impl.h"
61
62 #include "src/proto/grpc/testing/echo.grpc.pb.h"
63 #include "src/proto/grpc/testing/xds/ads_for_test.grpc.pb.h"
64 #include "src/proto/grpc/testing/xds/cds_for_test.grpc.pb.h"
65 #include "src/proto/grpc/testing/xds/eds_for_test.grpc.pb.h"
66 #include "src/proto/grpc/testing/xds/lds_rds_for_test.grpc.pb.h"
67 #include "src/proto/grpc/testing/xds/lrs_for_test.grpc.pb.h"
68
69 #include <gmock/gmock.h>
70 #include <gtest/gtest.h>
71
72 // TODO(dgq): Other scenarios in need of testing:
73 // - Send a serverlist with faulty ip:port addresses (port > 2^16, etc).
74 // - Test reception of invalid serverlist
75 // - Test against a non-LB server.
76 // - Random LB server closing the stream unexpectedly.
77 //
78 // Findings from end to end testing to be covered here:
79 // - Handling of LB servers restart, including reconnection after backing-off
80 // retries.
81 // - Destruction of load balanced channel (and therefore of xds instance)
82 // while:
83 // 1) the internal LB call is still active. This should work by virtue
84 // of the weak reference the LB call holds. The call should be terminated as
85 // part of the xds shutdown process.
86 // 2) the retry timer is active. Again, the weak reference it holds should
87 // prevent a premature call to \a glb_destroy.
88
89 namespace grpc {
90 namespace testing {
91 namespace {
92
93 using std::chrono::system_clock;
94
95 using ::envoy::api::v2::Cluster;
96 using ::envoy::api::v2::ClusterLoadAssignment;
97 using ::envoy::api::v2::DiscoveryRequest;
98 using ::envoy::api::v2::DiscoveryResponse;
99 using ::envoy::api::v2::FractionalPercent;
100 using ::envoy::api::v2::HttpConnectionManager;
101 using ::envoy::api::v2::Listener;
102 using ::envoy::api::v2::RouteConfiguration;
103 using ::envoy::service::discovery::v2::AggregatedDiscoveryService;
104 using ::envoy::service::load_stats::v2::ClusterStats;
105 using ::envoy::service::load_stats::v2::LoadReportingService;
106 using ::envoy::service::load_stats::v2::LoadStatsRequest;
107 using ::envoy::service::load_stats::v2::LoadStatsResponse;
108 using ::envoy::service::load_stats::v2::UpstreamLocalityStats;
109
110 constexpr char kLdsTypeUrl[] = "type.googleapis.com/envoy.api.v2.Listener";
111 constexpr char kRdsTypeUrl[] =
112 "type.googleapis.com/envoy.api.v2.RouteConfiguration";
113 constexpr char kCdsTypeUrl[] = "type.googleapis.com/envoy.api.v2.Cluster";
114 constexpr char kEdsTypeUrl[] =
115 "type.googleapis.com/envoy.api.v2.ClusterLoadAssignment";
116 constexpr char kDefaultLocalityRegion[] = "xds_default_locality_region";
117 constexpr char kDefaultLocalityZone[] = "xds_default_locality_zone";
118 constexpr char kLbDropType[] = "lb";
119 constexpr char kThrottleDropType[] = "throttle";
120 constexpr char kDefaultResourceName[] = "application_target_name";
121 constexpr int kDefaultLocalityWeight = 3;
122 constexpr int kDefaultLocalityPriority = 0;
123
124 constexpr char kBootstrapFile[] =
125 "{\n"
126 " \"xds_servers\": [\n"
127 " {\n"
128 " \"server_uri\": \"fake:///lb\",\n"
129 " \"channel_creds\": [\n"
130 " {\n"
131 " \"type\": \"fake\"\n"
132 " }\n"
133 " ]\n"
134 " }\n"
135 " ],\n"
136 " \"node\": {\n"
137 " \"id\": \"xds_end2end_test\",\n"
138 " \"cluster\": \"test\",\n"
139 " \"metadata\": {\n"
140 " \"foo\": \"bar\"\n"
141 " },\n"
142 " \"locality\": {\n"
143 " \"region\": \"corp\",\n"
144 " \"zone\": \"svl\",\n"
145 " \"subzone\": \"mp3\"\n"
146 " }\n"
147 " }\n"
148 "}\n";
149
150 constexpr char kBootstrapFileBad[] =
151 "{\n"
152 " \"xds_servers\": [\n"
153 " {\n"
154 " \"server_uri\": \"fake:///wrong_lb\",\n"
155 " \"channel_creds\": [\n"
156 " {\n"
157 " \"type\": \"fake\"\n"
158 " }\n"
159 " ]\n"
160 " }\n"
161 " ],\n"
162 " \"node\": {\n"
163 " }\n"
164 "}\n";
165
166 char* g_bootstrap_file;
167 char* g_bootstrap_file_bad;
168
WriteBootstrapFiles()169 void WriteBootstrapFiles() {
170 char* bootstrap_file;
171 FILE* out = gpr_tmpfile("xds_bootstrap", &bootstrap_file);
172 fputs(kBootstrapFile, out);
173 fclose(out);
174 g_bootstrap_file = bootstrap_file;
175 out = gpr_tmpfile("xds_bootstrap_bad", &bootstrap_file);
176 fputs(kBootstrapFileBad, out);
177 fclose(out);
178 g_bootstrap_file_bad = bootstrap_file;
179 }
180
181 // Helper class to minimize the number of unique ports we use for this test.
182 class PortSaver {
183 public:
GetPort()184 int GetPort() {
185 if (idx_ >= ports_.size()) {
186 ports_.push_back(grpc_pick_unused_port_or_die());
187 }
188 return ports_[idx_++];
189 }
190
Reset()191 void Reset() { idx_ = 0; }
192
193 private:
194 std::vector<int> ports_;
195 size_t idx_ = 0;
196 };
197
198 PortSaver* g_port_saver = nullptr;
199
200 template <typename ServiceType>
201 class CountedService : public ServiceType {
202 public:
request_count()203 size_t request_count() {
204 grpc_core::MutexLock lock(&mu_);
205 return request_count_;
206 }
207
response_count()208 size_t response_count() {
209 grpc_core::MutexLock lock(&mu_);
210 return response_count_;
211 }
212
IncreaseResponseCount()213 void IncreaseResponseCount() {
214 grpc_core::MutexLock lock(&mu_);
215 ++response_count_;
216 }
IncreaseRequestCount()217 void IncreaseRequestCount() {
218 grpc_core::MutexLock lock(&mu_);
219 ++request_count_;
220 }
221
ResetCounters()222 void ResetCounters() {
223 grpc_core::MutexLock lock(&mu_);
224 request_count_ = 0;
225 response_count_ = 0;
226 }
227
228 private:
229 grpc_core::Mutex mu_;
230 size_t request_count_ = 0;
231 size_t response_count_ = 0;
232 };
233
234 using LrsService = CountedService<LoadReportingService::Service>;
235
236 const char g_kCallCredsMdKey[] = "Balancer should not ...";
237 const char g_kCallCredsMdValue[] = "... receive me";
238
239 template <typename RpcService>
240 class BackendServiceImpl
241 : public CountedService<TestMultipleServiceImpl<RpcService>> {
242 public:
BackendServiceImpl()243 BackendServiceImpl() {}
244
Echo(ServerContext * context,const EchoRequest * request,EchoResponse * response)245 Status Echo(ServerContext* context, const EchoRequest* request,
246 EchoResponse* response) override {
247 // Backend should receive the call credentials metadata.
248 auto call_credentials_entry =
249 context->client_metadata().find(g_kCallCredsMdKey);
250 EXPECT_NE(call_credentials_entry, context->client_metadata().end());
251 if (call_credentials_entry != context->client_metadata().end()) {
252 EXPECT_EQ(call_credentials_entry->second, g_kCallCredsMdValue);
253 }
254 CountedService<TestMultipleServiceImpl<RpcService>>::IncreaseRequestCount();
255 const auto status =
256 TestMultipleServiceImpl<RpcService>::Echo(context, request, response);
257 CountedService<
258 TestMultipleServiceImpl<RpcService>>::IncreaseResponseCount();
259 AddClient(context->peer());
260 return status;
261 }
262
Echo1(ServerContext * context,const EchoRequest * request,EchoResponse * response)263 Status Echo1(ServerContext* context, const EchoRequest* request,
264 EchoResponse* response) override {
265 return Echo(context, request, response);
266 }
267
Echo2(ServerContext * context,const EchoRequest * request,EchoResponse * response)268 Status Echo2(ServerContext* context, const EchoRequest* request,
269 EchoResponse* response) override {
270 return Echo(context, request, response);
271 }
272
Start()273 void Start() {}
Shutdown()274 void Shutdown() {}
275
clients()276 std::set<grpc::string> clients() {
277 grpc_core::MutexLock lock(&clients_mu_);
278 return clients_;
279 }
280
281 private:
AddClient(const grpc::string & client)282 void AddClient(const grpc::string& client) {
283 grpc_core::MutexLock lock(&clients_mu_);
284 clients_.insert(client);
285 }
286
287 grpc_core::Mutex clients_mu_;
288 std::set<grpc::string> clients_;
289 };
290
291 class ClientStats {
292 public:
293 struct LocalityStats {
294 // Converts from proto message class.
LocalityStatsgrpc::testing::__anon74ea63330111::ClientStats::LocalityStats295 LocalityStats(const UpstreamLocalityStats& upstream_locality_stats)
296 : total_successful_requests(
297 upstream_locality_stats.total_successful_requests()),
298 total_requests_in_progress(
299 upstream_locality_stats.total_requests_in_progress()),
300 total_error_requests(upstream_locality_stats.total_error_requests()),
301 total_issued_requests(
302 upstream_locality_stats.total_issued_requests()) {}
303
304 uint64_t total_successful_requests;
305 uint64_t total_requests_in_progress;
306 uint64_t total_error_requests;
307 uint64_t total_issued_requests;
308 };
309
310 // Converts from proto message class.
ClientStats(const ClusterStats & cluster_stats)311 explicit ClientStats(const ClusterStats& cluster_stats)
312 : cluster_name_(cluster_stats.cluster_name()),
313 total_dropped_requests_(cluster_stats.total_dropped_requests()) {
314 for (const auto& input_locality_stats :
315 cluster_stats.upstream_locality_stats()) {
316 locality_stats_.emplace(input_locality_stats.locality().sub_zone(),
317 LocalityStats(input_locality_stats));
318 }
319 for (const auto& input_dropped_requests :
320 cluster_stats.dropped_requests()) {
321 dropped_requests_.emplace(input_dropped_requests.category(),
322 input_dropped_requests.dropped_count());
323 }
324 }
325
cluster_name() const326 const std::string& cluster_name() const { return cluster_name_; }
327
locality_stats() const328 const std::map<grpc::string, LocalityStats>& locality_stats() const {
329 return locality_stats_;
330 }
total_successful_requests() const331 uint64_t total_successful_requests() const {
332 uint64_t sum = 0;
333 for (auto& p : locality_stats_) {
334 sum += p.second.total_successful_requests;
335 }
336 return sum;
337 }
total_requests_in_progress() const338 uint64_t total_requests_in_progress() const {
339 uint64_t sum = 0;
340 for (auto& p : locality_stats_) {
341 sum += p.second.total_requests_in_progress;
342 }
343 return sum;
344 }
total_error_requests() const345 uint64_t total_error_requests() const {
346 uint64_t sum = 0;
347 for (auto& p : locality_stats_) {
348 sum += p.second.total_error_requests;
349 }
350 return sum;
351 }
total_issued_requests() const352 uint64_t total_issued_requests() const {
353 uint64_t sum = 0;
354 for (auto& p : locality_stats_) {
355 sum += p.second.total_issued_requests;
356 }
357 return sum;
358 }
359
total_dropped_requests() const360 uint64_t total_dropped_requests() const { return total_dropped_requests_; }
361
dropped_requests(const grpc::string & category) const362 uint64_t dropped_requests(const grpc::string& category) const {
363 auto iter = dropped_requests_.find(category);
364 GPR_ASSERT(iter != dropped_requests_.end());
365 return iter->second;
366 }
367
368 private:
369 std::string cluster_name_;
370 std::map<grpc::string, LocalityStats> locality_stats_;
371 uint64_t total_dropped_requests_;
372 std::map<grpc::string, uint64_t> dropped_requests_;
373 };
374
375 class AdsServiceImpl : public AggregatedDiscoveryService::Service,
376 public std::enable_shared_from_this<AdsServiceImpl> {
377 public:
378 struct ResponseState {
379 enum State { NOT_SENT, SENT, ACKED, NACKED };
380 State state = NOT_SENT;
381 std::string error_message;
382 };
383
384 struct EdsResourceArgs {
385 struct Locality {
Localitygrpc::testing::__anon74ea63330111::AdsServiceImpl::EdsResourceArgs::Locality386 Locality(const grpc::string& sub_zone, std::vector<int> ports,
387 int lb_weight = kDefaultLocalityWeight,
388 int priority = kDefaultLocalityPriority,
389 std::vector<envoy::api::v2::HealthStatus> health_statuses = {})
390 : sub_zone(std::move(sub_zone)),
391 ports(std::move(ports)),
392 lb_weight(lb_weight),
393 priority(priority),
394 health_statuses(std::move(health_statuses)) {}
395
396 const grpc::string sub_zone;
397 std::vector<int> ports;
398 int lb_weight;
399 int priority;
400 std::vector<envoy::api::v2::HealthStatus> health_statuses;
401 };
402
403 EdsResourceArgs() = default;
EdsResourceArgsgrpc::testing::__anon74ea63330111::AdsServiceImpl::EdsResourceArgs404 explicit EdsResourceArgs(std::vector<Locality> locality_list)
405 : locality_list(std::move(locality_list)) {}
406
407 std::vector<Locality> locality_list;
408 std::map<grpc::string, uint32_t> drop_categories;
409 FractionalPercent::DenominatorType drop_denominator =
410 FractionalPercent::MILLION;
411 };
412
413 using Stream = ServerReaderWriter<DiscoveryResponse, DiscoveryRequest>;
414
AdsServiceImpl(bool enable_load_reporting)415 AdsServiceImpl(bool enable_load_reporting) {
416 // Construct RDS response data.
417 default_route_config_.set_name(kDefaultResourceName);
418 auto* virtual_host = default_route_config_.add_virtual_hosts();
419 virtual_host->add_domains("*");
420 auto* route = virtual_host->add_routes();
421 route->mutable_match()->set_prefix("");
422 route->mutable_route()->set_cluster(kDefaultResourceName);
423 SetRdsResource(default_route_config_);
424 // Construct LDS response data (with inlined RDS result).
425 default_listener_ = BuildListener(default_route_config_);
426 SetLdsResource(default_listener_);
427 // Construct CDS response data.
428 default_cluster_.set_name(kDefaultResourceName);
429 default_cluster_.set_type(envoy::api::v2::Cluster::EDS);
430 default_cluster_.mutable_eds_cluster_config()
431 ->mutable_eds_config()
432 ->mutable_ads();
433 default_cluster_.set_lb_policy(envoy::api::v2::Cluster::ROUND_ROBIN);
434 if (enable_load_reporting) {
435 default_cluster_.mutable_lrs_server()->mutable_self();
436 }
437 SetCdsResource(default_cluster_);
438 }
439
StreamAggregatedResources(ServerContext * context,Stream * stream)440 Status StreamAggregatedResources(ServerContext* context,
441 Stream* stream) override {
442 gpr_log(GPR_INFO, "ADS[%p]: StreamAggregatedResources starts", this);
443 // Resources (type/name pairs) that have changed since the client
444 // subscribed to them.
445 UpdateQueue update_queue;
446 // Resources that the client will be subscribed to keyed by resource type
447 // url.
448 SubscriptionMap subscription_map;
449 [&]() {
450 {
451 grpc_core::MutexLock lock(&ads_mu_);
452 if (ads_done_) return;
453 }
454 // Balancer shouldn't receive the call credentials metadata.
455 EXPECT_EQ(context->client_metadata().find(g_kCallCredsMdKey),
456 context->client_metadata().end());
457 // Current Version map keyed by resource type url.
458 std::map<std::string, int> resource_type_version;
459 // Creating blocking thread to read from stream.
460 std::deque<DiscoveryRequest> requests;
461 bool stream_closed = false;
462 // Take a reference of the AdsServiceImpl object, reference will go
463 // out of scope after the reader thread is joined.
464 std::shared_ptr<AdsServiceImpl> ads_service_impl = shared_from_this();
465 std::thread reader(std::bind(&AdsServiceImpl::BlockingRead, this, stream,
466 &requests, &stream_closed));
467 // Main loop to look for requests and updates.
468 while (true) {
469 // Look for new requests and and decide what to handle.
470 absl::optional<DiscoveryResponse> response;
471 // Boolean to keep track if the loop received any work to do: a request
472 // or an update; regardless whether a response was actually sent out.
473 bool did_work = false;
474 {
475 grpc_core::MutexLock lock(&ads_mu_);
476 if (stream_closed) break;
477 if (!requests.empty()) {
478 DiscoveryRequest request = std::move(requests.front());
479 requests.pop_front();
480 did_work = true;
481 gpr_log(GPR_INFO,
482 "ADS[%p]: Received request for type %s with content %s",
483 this, request.type_url().c_str(),
484 request.DebugString().c_str());
485 // Identify ACK and NACK by looking for version information and
486 // comparing it to nonce (this server ensures they are always set to
487 // the same in a response.)
488 if (!request.response_nonce().empty()) {
489 resource_type_response_state_[request.type_url()].state =
490 (!request.version_info().empty() &&
491 request.version_info() == request.response_nonce())
492 ? ResponseState::ACKED
493 : ResponseState::NACKED;
494 }
495 if (request.has_error_detail()) {
496 resource_type_response_state_[request.type_url()].error_message =
497 request.error_detail().message();
498 }
499 // As long as the test did not tell us to ignore this type of
500 // request, we will loop through all resources to:
501 // 1. subscribe if necessary
502 // 2. update if necessary
503 // 3. unsubscribe if necessary
504 if (resource_types_to_ignore_.find(request.type_url()) ==
505 resource_types_to_ignore_.end()) {
506 auto& subscription_name_map =
507 subscription_map[request.type_url()];
508 auto& resource_name_map = resource_map_[request.type_url()];
509 std::set<std::string> resources_in_current_request;
510 std::set<std::string> resources_added_to_response;
511 for (const std::string& resource_name :
512 request.resource_names()) {
513 resources_in_current_request.emplace(resource_name);
514 auto& subscription_state = subscription_name_map[resource_name];
515 auto& resource_state = resource_name_map[resource_name];
516 MaybeSubscribe(request.type_url(), resource_name,
517 &subscription_state, &resource_state,
518 &update_queue);
519 if (ClientNeedsResourceUpdate(resource_state,
520 &subscription_state)) {
521 gpr_log(
522 GPR_INFO,
523 "ADS[%p]: Sending update for type=%s name=%s version=%d",
524 this, request.type_url().c_str(), resource_name.c_str(),
525 resource_state.version);
526 resources_added_to_response.emplace(resource_name);
527 if (!response.has_value()) response.emplace();
528 if (resource_state.resource.has_value()) {
529 response->add_resources()->CopyFrom(
530 resource_state.resource.value());
531 }
532 }
533 }
534 // Process unsubscriptions for any resource no longer
535 // present in the request's resource list.
536 ProcessUnsubscriptions(
537 request.type_url(), resources_in_current_request,
538 &subscription_name_map, &resource_name_map);
539 // Send response if needed.
540 if (!resources_added_to_response.empty()) {
541 CompleteBuildingDiscoveryResponse(
542 request.type_url(),
543 ++resource_type_version[request.type_url()],
544 subscription_name_map, resources_added_to_response,
545 &response.value());
546 }
547 }
548 }
549 }
550 if (response.has_value()) {
551 gpr_log(GPR_INFO, "ADS[%p]: Sending response: %s", this,
552 response->DebugString().c_str());
553 stream->Write(response.value());
554 }
555 response.reset();
556 // Look for updates and decide what to handle.
557 {
558 grpc_core::MutexLock lock(&ads_mu_);
559 if (!update_queue.empty()) {
560 const std::string resource_type =
561 std::move(update_queue.front().first);
562 const std::string resource_name =
563 std::move(update_queue.front().second);
564 update_queue.pop_front();
565 did_work = true;
566 gpr_log(GPR_INFO, "ADS[%p]: Received update for type=%s name=%s",
567 this, resource_type.c_str(), resource_name.c_str());
568 auto& subscription_name_map = subscription_map[resource_type];
569 auto& resource_name_map = resource_map_[resource_type];
570 auto it = subscription_name_map.find(resource_name);
571 if (it != subscription_name_map.end()) {
572 SubscriptionState& subscription_state = it->second;
573 ResourceState& resource_state = resource_name_map[resource_name];
574 if (ClientNeedsResourceUpdate(resource_state,
575 &subscription_state)) {
576 gpr_log(
577 GPR_INFO,
578 "ADS[%p]: Sending update for type=%s name=%s version=%d",
579 this, resource_type.c_str(), resource_name.c_str(),
580 resource_state.version);
581 response.emplace();
582 if (resource_state.resource.has_value()) {
583 response->add_resources()->CopyFrom(
584 resource_state.resource.value());
585 }
586 CompleteBuildingDiscoveryResponse(
587 resource_type, ++resource_type_version[resource_type],
588 subscription_name_map, {resource_name}, &response.value());
589 }
590 }
591 }
592 }
593 if (response.has_value()) {
594 gpr_log(GPR_INFO, "ADS[%p]: Sending update response: %s", this,
595 response->DebugString().c_str());
596 stream->Write(response.value());
597 }
598 // If we didn't find anything to do, delay before the next loop
599 // iteration; otherwise, check whether we should exit and then
600 // immediately continue.
601 gpr_timespec deadline =
602 grpc_timeout_milliseconds_to_deadline(did_work ? 0 : 10);
603 {
604 grpc_core::MutexLock lock(&ads_mu_);
605 if (!ads_cond_.WaitUntil(&ads_mu_, [this] { return ads_done_; },
606 deadline))
607 break;
608 }
609 }
610 reader.join();
611 }();
612 // Clean up any subscriptions that were still active when the call finished.
613 {
614 grpc_core::MutexLock lock(&ads_mu_);
615 for (auto& p : subscription_map) {
616 const std::string& type_url = p.first;
617 SubscriptionNameMap& subscription_name_map = p.second;
618 for (auto& q : subscription_name_map) {
619 const std::string& resource_name = q.first;
620 SubscriptionState& subscription_state = q.second;
621 ResourceState& resource_state =
622 resource_map_[type_url][resource_name];
623 resource_state.subscriptions.erase(&subscription_state);
624 }
625 }
626 }
627 gpr_log(GPR_INFO, "ADS[%p]: StreamAggregatedResources done", this);
628 return Status::OK;
629 }
630
default_listener() const631 Listener default_listener() const { return default_listener_; }
default_route_config() const632 RouteConfiguration default_route_config() const {
633 return default_route_config_;
634 }
default_cluster() const635 Cluster default_cluster() const { return default_cluster_; }
636
lds_response_state()637 ResponseState lds_response_state() {
638 grpc_core::MutexLock lock(&ads_mu_);
639 return resource_type_response_state_[kLdsTypeUrl];
640 }
641
rds_response_state()642 ResponseState rds_response_state() {
643 grpc_core::MutexLock lock(&ads_mu_);
644 return resource_type_response_state_[kRdsTypeUrl];
645 }
646
cds_response_state()647 ResponseState cds_response_state() {
648 grpc_core::MutexLock lock(&ads_mu_);
649 return resource_type_response_state_[kCdsTypeUrl];
650 }
651
eds_response_state()652 ResponseState eds_response_state() {
653 grpc_core::MutexLock lock(&ads_mu_);
654 return resource_type_response_state_[kEdsTypeUrl];
655 }
656
SetResourceIgnore(const std::string & type_url)657 void SetResourceIgnore(const std::string& type_url) {
658 grpc_core::MutexLock lock(&ads_mu_);
659 resource_types_to_ignore_.emplace(type_url);
660 }
661
UnsetResource(const std::string & type_url,const std::string & name)662 void UnsetResource(const std::string& type_url, const std::string& name) {
663 grpc_core::MutexLock lock(&ads_mu_);
664 ResourceState& state = resource_map_[type_url][name];
665 ++state.version;
666 state.resource.reset();
667 gpr_log(GPR_INFO, "ADS[%p]: Unsetting %s resource %s to version %u", this,
668 type_url.c_str(), name.c_str(), state.version);
669 for (SubscriptionState* subscription : state.subscriptions) {
670 subscription->update_queue->emplace_back(type_url, name);
671 }
672 }
673
SetResource(google::protobuf::Any resource,const std::string & type_url,const std::string & name)674 void SetResource(google::protobuf::Any resource, const std::string& type_url,
675 const std::string& name) {
676 grpc_core::MutexLock lock(&ads_mu_);
677 ResourceState& state = resource_map_[type_url][name];
678 ++state.version;
679 state.resource = std::move(resource);
680 gpr_log(GPR_INFO, "ADS[%p]: Updating %s resource %s to version %u", this,
681 type_url.c_str(), name.c_str(), state.version);
682 for (SubscriptionState* subscription : state.subscriptions) {
683 subscription->update_queue->emplace_back(type_url, name);
684 }
685 }
686
SetLdsResource(const Listener & listener)687 void SetLdsResource(const Listener& listener) {
688 google::protobuf::Any resource;
689 resource.PackFrom(listener);
690 SetResource(std::move(resource), kLdsTypeUrl, listener.name());
691 }
692
SetRdsResource(const RouteConfiguration & route)693 void SetRdsResource(const RouteConfiguration& route) {
694 google::protobuf::Any resource;
695 resource.PackFrom(route);
696 SetResource(std::move(resource), kRdsTypeUrl, route.name());
697 }
698
SetCdsResource(const Cluster & cluster)699 void SetCdsResource(const Cluster& cluster) {
700 google::protobuf::Any resource;
701 resource.PackFrom(cluster);
702 SetResource(std::move(resource), kCdsTypeUrl, cluster.name());
703 }
704
SetEdsResource(const ClusterLoadAssignment & assignment)705 void SetEdsResource(const ClusterLoadAssignment& assignment) {
706 google::protobuf::Any resource;
707 resource.PackFrom(assignment);
708 SetResource(std::move(resource), kEdsTypeUrl, assignment.cluster_name());
709 }
710
SetLdsToUseDynamicRds()711 void SetLdsToUseDynamicRds() {
712 auto listener = default_listener_;
713 HttpConnectionManager http_connection_manager;
714 auto* rds = http_connection_manager.mutable_rds();
715 rds->set_route_config_name(kDefaultResourceName);
716 rds->mutable_config_source()->mutable_ads();
717 listener.mutable_api_listener()->mutable_api_listener()->PackFrom(
718 http_connection_manager);
719 SetLdsResource(listener);
720 }
721
BuildListener(const RouteConfiguration & route_config)722 static Listener BuildListener(const RouteConfiguration& route_config) {
723 HttpConnectionManager http_connection_manager;
724 *(http_connection_manager.mutable_route_config()) = route_config;
725 Listener listener;
726 listener.set_name(kDefaultResourceName);
727 listener.mutable_api_listener()->mutable_api_listener()->PackFrom(
728 http_connection_manager);
729 return listener;
730 }
731
Start()732 void Start() {
733 grpc_core::MutexLock lock(&ads_mu_);
734 ads_done_ = false;
735 }
736
Shutdown()737 void Shutdown() {
738 {
739 grpc_core::MutexLock lock(&ads_mu_);
740 NotifyDoneWithAdsCallLocked();
741 resource_type_response_state_.clear();
742 }
743 gpr_log(GPR_INFO, "ADS[%p]: shut down", this);
744 }
745
BuildEdsResource(const EdsResourceArgs & args,const char * cluster_name=kDefaultResourceName)746 static ClusterLoadAssignment BuildEdsResource(
747 const EdsResourceArgs& args,
748 const char* cluster_name = kDefaultResourceName) {
749 ClusterLoadAssignment assignment;
750 assignment.set_cluster_name(cluster_name);
751 for (const auto& locality : args.locality_list) {
752 auto* endpoints = assignment.add_endpoints();
753 endpoints->mutable_load_balancing_weight()->set_value(locality.lb_weight);
754 endpoints->set_priority(locality.priority);
755 endpoints->mutable_locality()->set_region(kDefaultLocalityRegion);
756 endpoints->mutable_locality()->set_zone(kDefaultLocalityZone);
757 endpoints->mutable_locality()->set_sub_zone(locality.sub_zone);
758 for (size_t i = 0; i < locality.ports.size(); ++i) {
759 const int& port = locality.ports[i];
760 auto* lb_endpoints = endpoints->add_lb_endpoints();
761 if (locality.health_statuses.size() > i &&
762 locality.health_statuses[i] !=
763 envoy::api::v2::HealthStatus::UNKNOWN) {
764 lb_endpoints->set_health_status(locality.health_statuses[i]);
765 }
766 auto* endpoint = lb_endpoints->mutable_endpoint();
767 auto* address = endpoint->mutable_address();
768 auto* socket_address = address->mutable_socket_address();
769 socket_address->set_address("127.0.0.1");
770 socket_address->set_port_value(port);
771 }
772 }
773 if (!args.drop_categories.empty()) {
774 auto* policy = assignment.mutable_policy();
775 for (const auto& p : args.drop_categories) {
776 const grpc::string& name = p.first;
777 const uint32_t parts_per_million = p.second;
778 auto* drop_overload = policy->add_drop_overloads();
779 drop_overload->set_category(name);
780 auto* drop_percentage = drop_overload->mutable_drop_percentage();
781 drop_percentage->set_numerator(parts_per_million);
782 drop_percentage->set_denominator(args.drop_denominator);
783 }
784 }
785 return assignment;
786 }
787
NotifyDoneWithAdsCall()788 void NotifyDoneWithAdsCall() {
789 grpc_core::MutexLock lock(&ads_mu_);
790 NotifyDoneWithAdsCallLocked();
791 }
792
NotifyDoneWithAdsCallLocked()793 void NotifyDoneWithAdsCallLocked() {
794 if (!ads_done_) {
795 ads_done_ = true;
796 ads_cond_.Broadcast();
797 }
798 }
799
800 private:
801 // A queue of resource type/name pairs that have changed since the client
802 // subscribed to them.
803 using UpdateQueue = std::deque<
804 std::pair<std::string /* type url */, std::string /* resource name */>>;
805
806 // A struct representing a client's subscription to a particular resource.
807 struct SubscriptionState {
808 // Version that the client currently knows about.
809 int current_version = 0;
810 // The queue upon which to place updates when the resource is updated.
811 UpdateQueue* update_queue;
812 };
813
814 // A struct representing the a client's subscription to all the resources.
815 using SubscriptionNameMap =
816 std::map<std::string /* resource_name */, SubscriptionState>;
817 using SubscriptionMap =
818 std::map<std::string /* type_url */, SubscriptionNameMap>;
819
820 // A struct representing the current state for a resource:
821 // - the version of the resource that is set by the SetResource() methods.
822 // - a list of subscriptions interested in this resource.
823 struct ResourceState {
824 int version = 0;
825 absl::optional<google::protobuf::Any> resource;
826 std::set<SubscriptionState*> subscriptions;
827 };
828
829 // A struct representing the current state for all resources:
830 // LDS, CDS, EDS, and RDS for the class as a whole.
831 using ResourceNameMap =
832 std::map<std::string /* resource_name */, ResourceState>;
833 using ResourceMap = std::map<std::string /* type_url */, ResourceNameMap>;
834
835 // Starting a thread to do blocking read on the stream until cancel.
BlockingRead(Stream * stream,std::deque<DiscoveryRequest> * requests,bool * stream_closed)836 void BlockingRead(Stream* stream, std::deque<DiscoveryRequest>* requests,
837 bool* stream_closed) {
838 DiscoveryRequest request;
839 bool seen_first_request = false;
840 while (stream->Read(&request)) {
841 if (!seen_first_request) {
842 EXPECT_TRUE(request.has_node());
843 ASSERT_FALSE(request.node().client_features().empty());
844 EXPECT_EQ(request.node().client_features(0),
845 "envoy.lb.does_not_support_overprovisioning");
846 seen_first_request = true;
847 }
848 {
849 grpc_core::MutexLock lock(&ads_mu_);
850 requests->emplace_back(std::move(request));
851 }
852 }
853 gpr_log(GPR_INFO, "ADS[%p]: Null read, stream closed", this);
854 grpc_core::MutexLock lock(&ads_mu_);
855 *stream_closed = true;
856 }
857
858 // Checks whether the client needs to receive a newer version of
859 // the resource. If so, updates subscription_state->current_version and
860 // returns true.
ClientNeedsResourceUpdate(const ResourceState & resource_state,SubscriptionState * subscription_state)861 bool ClientNeedsResourceUpdate(const ResourceState& resource_state,
862 SubscriptionState* subscription_state) {
863 if (subscription_state->current_version < resource_state.version) {
864 subscription_state->current_version = resource_state.version;
865 return true;
866 }
867 return false;
868 }
869
870 // Subscribes to a resource if not already subscribed:
871 // 1. Sets the update_queue field in subscription_state.
872 // 2. Adds subscription_state to resource_state->subscriptions.
MaybeSubscribe(const std::string & resource_type,const std::string & resource_name,SubscriptionState * subscription_state,ResourceState * resource_state,UpdateQueue * update_queue)873 void MaybeSubscribe(const std::string& resource_type,
874 const std::string& resource_name,
875 SubscriptionState* subscription_state,
876 ResourceState* resource_state,
877 UpdateQueue* update_queue) {
878 // The update_queue will be null if we were not previously subscribed.
879 if (subscription_state->update_queue != nullptr) return;
880 subscription_state->update_queue = update_queue;
881 resource_state->subscriptions.emplace(subscription_state);
882 gpr_log(GPR_INFO, "ADS[%p]: subscribe to resource type %s name %s state %p",
883 this, resource_type.c_str(), resource_name.c_str(),
884 &subscription_state);
885 }
886
887 // Removes subscriptions for resources no longer present in the
888 // current request.
ProcessUnsubscriptions(const std::string & resource_type,const std::set<std::string> & resources_in_current_request,SubscriptionNameMap * subscription_name_map,ResourceNameMap * resource_name_map)889 void ProcessUnsubscriptions(
890 const std::string& resource_type,
891 const std::set<std::string>& resources_in_current_request,
892 SubscriptionNameMap* subscription_name_map,
893 ResourceNameMap* resource_name_map) {
894 for (auto it = subscription_name_map->begin();
895 it != subscription_name_map->end();) {
896 const std::string& resource_name = it->first;
897 SubscriptionState& subscription_state = it->second;
898 if (resources_in_current_request.find(resource_name) !=
899 resources_in_current_request.end()) {
900 ++it;
901 continue;
902 }
903 gpr_log(GPR_INFO, "ADS[%p]: Unsubscribe to type=%s name=%s state=%p",
904 this, resource_type.c_str(), resource_name.c_str(),
905 &subscription_state);
906 auto resource_it = resource_name_map->find(resource_name);
907 GPR_ASSERT(resource_it != resource_name_map->end());
908 auto& resource_state = resource_it->second;
909 resource_state.subscriptions.erase(&subscription_state);
910 if (resource_state.subscriptions.empty() &&
911 !resource_state.resource.has_value()) {
912 resource_name_map->erase(resource_it);
913 }
914 it = subscription_name_map->erase(it);
915 }
916 }
917
918 // Completing the building a DiscoveryResponse by adding common information
919 // for all resources and by adding all subscribed resources for LDS and CDS.
CompleteBuildingDiscoveryResponse(const std::string & resource_type,const int version,const SubscriptionNameMap & subscription_name_map,const std::set<std::string> & resources_added_to_response,DiscoveryResponse * response)920 void CompleteBuildingDiscoveryResponse(
921 const std::string& resource_type, const int version,
922 const SubscriptionNameMap& subscription_name_map,
923 const std::set<std::string>& resources_added_to_response,
924 DiscoveryResponse* response) {
925 auto& response_state = resource_type_response_state_[resource_type];
926 if (response_state.state == ResponseState::NOT_SENT) {
927 response_state.state = ResponseState::SENT;
928 }
929 response->set_type_url(resource_type);
930 response->set_version_info(absl::StrCat(version));
931 response->set_nonce(absl::StrCat(version));
932 if (resource_type == kLdsTypeUrl || resource_type == kCdsTypeUrl) {
933 // For LDS and CDS we must send back all subscribed resources
934 // (even the unchanged ones)
935 for (const auto& p : subscription_name_map) {
936 const std::string& resource_name = p.first;
937 if (resources_added_to_response.find(resource_name) ==
938 resources_added_to_response.end()) {
939 const ResourceState& resource_state =
940 resource_map_[resource_type][resource_name];
941 if (resource_state.resource.has_value()) {
942 response->add_resources()->CopyFrom(
943 resource_state.resource.value());
944 }
945 }
946 }
947 }
948 }
949
950 grpc_core::CondVar ads_cond_;
951 // Protect the members below.
952 grpc_core::Mutex ads_mu_;
953 bool ads_done_ = false;
954 Listener default_listener_;
955 RouteConfiguration default_route_config_;
956 Cluster default_cluster_;
957 std::map<std::string /* type_url */, ResponseState>
958 resource_type_response_state_;
959 std::set<std::string /*resource_type*/> resource_types_to_ignore_;
960 // An instance data member containing the current state of all resources.
961 // Note that an entry will exist whenever either of the following is true:
962 // - The resource exists (i.e., has been created by SetResource() and has not
963 // yet been destroyed by UnsetResource()).
964 // - There is at least one subscription for the resource.
965 ResourceMap resource_map_;
966 };
967
968 class LrsServiceImpl : public LrsService,
969 public std::enable_shared_from_this<LrsServiceImpl> {
970 public:
971 using Stream = ServerReaderWriter<LoadStatsResponse, LoadStatsRequest>;
972
LrsServiceImpl(int client_load_reporting_interval_seconds)973 explicit LrsServiceImpl(int client_load_reporting_interval_seconds)
974 : client_load_reporting_interval_seconds_(
975 client_load_reporting_interval_seconds),
976 cluster_names_({kDefaultResourceName}) {}
977
StreamLoadStats(ServerContext *,Stream * stream)978 Status StreamLoadStats(ServerContext* /*context*/, Stream* stream) override {
979 gpr_log(GPR_INFO, "LRS[%p]: StreamLoadStats starts", this);
980 GPR_ASSERT(client_load_reporting_interval_seconds_ > 0);
981 // Take a reference of the LrsServiceImpl object, reference will go
982 // out of scope after this method exits.
983 std::shared_ptr<LrsServiceImpl> lrs_service_impl = shared_from_this();
984 // Read initial request.
985 LoadStatsRequest request;
986 if (stream->Read(&request)) {
987 IncreaseRequestCount(); // Only for initial request.
988 // Verify server name set in metadata.
989 auto it =
990 request.node().metadata().fields().find("PROXYLESS_CLIENT_HOSTNAME");
991 GPR_ASSERT(it != request.node().metadata().fields().end());
992 EXPECT_EQ(it->second.string_value(), kDefaultResourceName);
993 // Verify client features.
994 EXPECT_THAT(request.node().client_features(),
995 ::testing::Contains("envoy.lrs.supports_send_all_clusters"));
996 // Send initial response.
997 LoadStatsResponse response;
998 if (send_all_clusters_) {
999 response.set_send_all_clusters(true);
1000 } else {
1001 for (const std::string& cluster_name : cluster_names_) {
1002 response.add_clusters(cluster_name);
1003 }
1004 }
1005 response.mutable_load_reporting_interval()->set_seconds(
1006 client_load_reporting_interval_seconds_);
1007 stream->Write(response);
1008 IncreaseResponseCount();
1009 // Wait for report.
1010 request.Clear();
1011 while (stream->Read(&request)) {
1012 gpr_log(GPR_INFO, "LRS[%p]: received client load report message: %s",
1013 this, request.DebugString().c_str());
1014 std::vector<ClientStats> stats;
1015 for (const auto& cluster_stats : request.cluster_stats()) {
1016 stats.emplace_back(cluster_stats);
1017 }
1018 grpc_core::MutexLock lock(&load_report_mu_);
1019 result_queue_.emplace_back(std::move(stats));
1020 if (load_report_cond_ != nullptr) load_report_cond_->Signal();
1021 }
1022 // Wait until notified done.
1023 grpc_core::MutexLock lock(&lrs_mu_);
1024 lrs_cv_.WaitUntil(&lrs_mu_, [this] { return lrs_done_; });
1025 }
1026 gpr_log(GPR_INFO, "LRS[%p]: StreamLoadStats done", this);
1027 return Status::OK;
1028 }
1029
1030 // Must be called before the LRS call is started.
set_send_all_clusters(bool send_all_clusters)1031 void set_send_all_clusters(bool send_all_clusters) {
1032 send_all_clusters_ = send_all_clusters;
1033 }
set_cluster_names(const std::set<std::string> & cluster_names)1034 void set_cluster_names(const std::set<std::string>& cluster_names) {
1035 cluster_names_ = cluster_names;
1036 }
1037
Start()1038 void Start() {
1039 lrs_done_ = false;
1040 result_queue_.clear();
1041 }
1042
Shutdown()1043 void Shutdown() {
1044 {
1045 grpc_core::MutexLock lock(&lrs_mu_);
1046 NotifyDoneWithLrsCallLocked();
1047 }
1048 gpr_log(GPR_INFO, "LRS[%p]: shut down", this);
1049 }
1050
WaitForLoadReport()1051 std::vector<ClientStats> WaitForLoadReport() {
1052 grpc_core::MutexLock lock(&load_report_mu_);
1053 grpc_core::CondVar cv;
1054 if (result_queue_.empty()) {
1055 load_report_cond_ = &cv;
1056 load_report_cond_->WaitUntil(&load_report_mu_,
1057 [this] { return !result_queue_.empty(); });
1058 load_report_cond_ = nullptr;
1059 }
1060 std::vector<ClientStats> result = std::move(result_queue_.front());
1061 result_queue_.pop_front();
1062 return result;
1063 }
1064
NotifyDoneWithLrsCall()1065 void NotifyDoneWithLrsCall() {
1066 grpc_core::MutexLock lock(&lrs_mu_);
1067 NotifyDoneWithLrsCallLocked();
1068 }
1069
1070 private:
NotifyDoneWithLrsCallLocked()1071 void NotifyDoneWithLrsCallLocked() {
1072 if (!lrs_done_) {
1073 lrs_done_ = true;
1074 lrs_cv_.Broadcast();
1075 }
1076 }
1077
1078 const int client_load_reporting_interval_seconds_;
1079 bool send_all_clusters_ = false;
1080 std::set<std::string> cluster_names_;
1081
1082 grpc_core::CondVar lrs_cv_;
1083 grpc_core::Mutex lrs_mu_; // Protects lrs_done_.
1084 bool lrs_done_ = false;
1085
1086 grpc_core::Mutex load_report_mu_; // Protects the members below.
1087 grpc_core::CondVar* load_report_cond_ = nullptr;
1088 std::deque<std::vector<ClientStats>> result_queue_;
1089 };
1090
1091 class TestType {
1092 public:
TestType(bool use_xds_resolver,bool enable_load_reporting,bool enable_rds_testing=false)1093 TestType(bool use_xds_resolver, bool enable_load_reporting,
1094 bool enable_rds_testing = false)
1095 : use_xds_resolver_(use_xds_resolver),
1096 enable_load_reporting_(enable_load_reporting),
1097 enable_rds_testing_(enable_rds_testing) {}
1098
use_xds_resolver() const1099 bool use_xds_resolver() const { return use_xds_resolver_; }
enable_load_reporting() const1100 bool enable_load_reporting() const { return enable_load_reporting_; }
enable_rds_testing() const1101 bool enable_rds_testing() const { return enable_rds_testing_; }
1102
AsString() const1103 grpc::string AsString() const {
1104 grpc::string retval = (use_xds_resolver_ ? "XdsResolver" : "FakeResolver");
1105 if (enable_load_reporting_) retval += "WithLoadReporting";
1106 if (enable_rds_testing_) retval += "Rds";
1107 return retval;
1108 }
1109
1110 private:
1111 const bool use_xds_resolver_;
1112 const bool enable_load_reporting_;
1113 const bool enable_rds_testing_;
1114 };
1115
1116 class XdsEnd2endTest : public ::testing::TestWithParam<TestType> {
1117 protected:
XdsEnd2endTest(size_t num_backends,size_t num_balancers,int client_load_reporting_interval_seconds=100)1118 XdsEnd2endTest(size_t num_backends, size_t num_balancers,
1119 int client_load_reporting_interval_seconds = 100)
1120 : num_backends_(num_backends),
1121 num_balancers_(num_balancers),
1122 client_load_reporting_interval_seconds_(
1123 client_load_reporting_interval_seconds) {}
1124
SetUpTestCase()1125 static void SetUpTestCase() {
1126 // Make the backup poller poll very frequently in order to pick up
1127 // updates from all the subchannels's FDs.
1128 GPR_GLOBAL_CONFIG_SET(grpc_client_channel_backup_poll_interval_ms, 1);
1129 #if TARGET_OS_IPHONE
1130 // Workaround Apple CFStream bug
1131 gpr_setenv("grpc_cfstream", "0");
1132 #endif
1133 grpc_init();
1134 }
1135
TearDownTestCase()1136 static void TearDownTestCase() { grpc_shutdown(); }
1137
SetUp()1138 void SetUp() override {
1139 gpr_setenv("GRPC_XDS_BOOTSTRAP", g_bootstrap_file);
1140 g_port_saver->Reset();
1141 response_generator_ =
1142 grpc_core::MakeRefCounted<grpc_core::FakeResolverResponseGenerator>();
1143 lb_channel_response_generator_ =
1144 grpc_core::MakeRefCounted<grpc_core::FakeResolverResponseGenerator>();
1145 // Start the backends.
1146 for (size_t i = 0; i < num_backends_; ++i) {
1147 backends_.emplace_back(new BackendServerThread);
1148 backends_.back()->Start();
1149 }
1150 // Start the load balancers.
1151 for (size_t i = 0; i < num_balancers_; ++i) {
1152 balancers_.emplace_back(
1153 new BalancerServerThread(GetParam().enable_load_reporting()
1154 ? client_load_reporting_interval_seconds_
1155 : 0));
1156 balancers_.back()->Start();
1157 if (GetParam().enable_rds_testing()) {
1158 balancers_[i]->ads_service()->SetLdsToUseDynamicRds();
1159 }
1160 }
1161 ResetStub();
1162 }
1163
TearDown()1164 void TearDown() override {
1165 ShutdownAllBackends();
1166 for (auto& balancer : balancers_) balancer->Shutdown();
1167 }
1168
StartAllBackends()1169 void StartAllBackends() {
1170 for (auto& backend : backends_) backend->Start();
1171 }
1172
StartBackend(size_t index)1173 void StartBackend(size_t index) { backends_[index]->Start(); }
1174
ShutdownAllBackends()1175 void ShutdownAllBackends() {
1176 for (auto& backend : backends_) backend->Shutdown();
1177 }
1178
ShutdownBackend(size_t index)1179 void ShutdownBackend(size_t index) { backends_[index]->Shutdown(); }
1180
ResetStub(int failover_timeout=0,const grpc::string & expected_targets="",int xds_resource_does_not_exist_timeout=0)1181 void ResetStub(int failover_timeout = 0,
1182 const grpc::string& expected_targets = "",
1183 int xds_resource_does_not_exist_timeout = 0) {
1184 ChannelArguments args;
1185 if (failover_timeout > 0) {
1186 args.SetInt(GRPC_ARG_PRIORITY_FAILOVER_TIMEOUT_MS, failover_timeout);
1187 }
1188 if (xds_resource_does_not_exist_timeout > 0) {
1189 args.SetInt(GRPC_ARG_XDS_RESOURCE_DOES_NOT_EXIST_TIMEOUT_MS,
1190 xds_resource_does_not_exist_timeout);
1191 }
1192 // If the parent channel is using the fake resolver, we inject the
1193 // response generator for the parent here, and then SetNextResolution()
1194 // will inject the xds channel's response generator via the parent's
1195 // response generator.
1196 //
1197 // In contrast, if we are using the xds resolver, then the parent
1198 // channel never uses a response generator, and we inject the xds
1199 // channel's response generator here.
1200 args.SetPointer(GRPC_ARG_FAKE_RESOLVER_RESPONSE_GENERATOR,
1201 GetParam().use_xds_resolver()
1202 ? lb_channel_response_generator_.get()
1203 : response_generator_.get());
1204 if (!expected_targets.empty()) {
1205 args.SetString(GRPC_ARG_FAKE_SECURITY_EXPECTED_TARGETS, expected_targets);
1206 }
1207 grpc::string scheme = GetParam().use_xds_resolver() ? "xds" : "fake";
1208 std::ostringstream uri;
1209 uri << scheme << ":///" << kApplicationTargetName_;
1210 // TODO(dgq): templatize tests to run everything using both secure and
1211 // insecure channel credentials.
1212 grpc_channel_credentials* channel_creds =
1213 grpc_fake_transport_security_credentials_create();
1214 grpc_call_credentials* call_creds = grpc_md_only_test_credentials_create(
1215 g_kCallCredsMdKey, g_kCallCredsMdValue, false);
1216 std::shared_ptr<ChannelCredentials> creds(
1217 new SecureChannelCredentials(grpc_composite_channel_credentials_create(
1218 channel_creds, call_creds, nullptr)));
1219 call_creds->Unref();
1220 channel_creds->Unref();
1221 channel_ = ::grpc::CreateCustomChannel(uri.str(), creds, args);
1222 stub_ = grpc::testing::EchoTestService::NewStub(channel_);
1223 stub1_ = grpc::testing::EchoTest1Service::NewStub(channel_);
1224 stub2_ = grpc::testing::EchoTest2Service::NewStub(channel_);
1225 }
1226
1227 enum RpcService {
1228 SERVICE_ECHO,
1229 SERVICE_ECHO1,
1230 SERVICE_ECHO2,
1231 };
1232
1233 enum RpcMethod {
1234 METHOD_ECHO,
1235 METHOD_ECHO1,
1236 METHOD_ECHO2,
1237 };
1238
1239 struct RpcOptions {
1240 RpcService service = SERVICE_ECHO;
1241 RpcMethod method = METHOD_ECHO;
1242 int timeout_ms = 1000;
1243 bool wait_for_ready = false;
1244 bool server_fail = false;
1245
RpcOptionsgrpc::testing::__anon74ea63330111::XdsEnd2endTest::RpcOptions1246 RpcOptions() {}
1247
set_rpc_servicegrpc::testing::__anon74ea63330111::XdsEnd2endTest::RpcOptions1248 RpcOptions& set_rpc_service(RpcService rpc_service) {
1249 service = rpc_service;
1250 return *this;
1251 }
1252
set_rpc_methodgrpc::testing::__anon74ea63330111::XdsEnd2endTest::RpcOptions1253 RpcOptions& set_rpc_method(RpcMethod rpc_method) {
1254 method = rpc_method;
1255 return *this;
1256 }
1257
set_timeout_msgrpc::testing::__anon74ea63330111::XdsEnd2endTest::RpcOptions1258 RpcOptions& set_timeout_ms(int rpc_timeout_ms) {
1259 timeout_ms = rpc_timeout_ms;
1260 return *this;
1261 }
1262
set_wait_for_readygrpc::testing::__anon74ea63330111::XdsEnd2endTest::RpcOptions1263 RpcOptions& set_wait_for_ready(bool rpc_wait_for_ready) {
1264 wait_for_ready = rpc_wait_for_ready;
1265 return *this;
1266 }
1267
set_server_failgrpc::testing::__anon74ea63330111::XdsEnd2endTest::RpcOptions1268 RpcOptions& set_server_fail(bool rpc_server_fail) {
1269 server_fail = rpc_server_fail;
1270 return *this;
1271 }
1272 };
1273
1274 template <typename Stub>
SendRpcMethod(Stub * stub,const RpcOptions & rpc_options,ClientContext * context,EchoRequest & request,EchoResponse * response)1275 Status SendRpcMethod(Stub* stub, const RpcOptions& rpc_options,
1276 ClientContext* context, EchoRequest& request,
1277 EchoResponse* response) {
1278 switch (rpc_options.method) {
1279 case METHOD_ECHO:
1280 return (*stub)->Echo(context, request, response);
1281 case METHOD_ECHO1:
1282 return (*stub)->Echo1(context, request, response);
1283 case METHOD_ECHO2:
1284 return (*stub)->Echo2(context, request, response);
1285 }
1286 }
1287
ResetBackendCounters(size_t start_index=0,size_t stop_index=0)1288 void ResetBackendCounters(size_t start_index = 0, size_t stop_index = 0) {
1289 if (stop_index == 0) stop_index = backends_.size();
1290 for (size_t i = start_index; i < stop_index; ++i) {
1291 backends_[i]->backend_service()->ResetCounters();
1292 backends_[i]->backend_service1()->ResetCounters();
1293 backends_[i]->backend_service2()->ResetCounters();
1294 }
1295 }
1296
SeenAllBackends(size_t start_index=0,size_t stop_index=0,const RpcOptions & rpc_options=RpcOptions ())1297 bool SeenAllBackends(size_t start_index = 0, size_t stop_index = 0,
1298 const RpcOptions& rpc_options = RpcOptions()) {
1299 if (stop_index == 0) stop_index = backends_.size();
1300 for (size_t i = start_index; i < stop_index; ++i) {
1301 switch (rpc_options.service) {
1302 case SERVICE_ECHO:
1303 if (backends_[i]->backend_service()->request_count() == 0)
1304 return false;
1305 break;
1306 case SERVICE_ECHO1:
1307 if (backends_[i]->backend_service1()->request_count() == 0)
1308 return false;
1309 break;
1310 case SERVICE_ECHO2:
1311 if (backends_[i]->backend_service2()->request_count() == 0)
1312 return false;
1313 break;
1314 }
1315 }
1316 return true;
1317 }
1318
SendRpcAndCount(int * num_total,int * num_ok,int * num_failure,int * num_drops,const RpcOptions & rpc_options=RpcOptions ())1319 void SendRpcAndCount(int* num_total, int* num_ok, int* num_failure,
1320 int* num_drops,
1321 const RpcOptions& rpc_options = RpcOptions()) {
1322 const Status status = SendRpc(rpc_options);
1323 if (status.ok()) {
1324 ++*num_ok;
1325 } else {
1326 if (status.error_message() == "Call dropped by load balancing policy") {
1327 ++*num_drops;
1328 } else {
1329 ++*num_failure;
1330 }
1331 }
1332 ++*num_total;
1333 }
1334
WaitForAllBackends(size_t start_index=0,size_t stop_index=0,bool reset_counters=true,const RpcOptions & rpc_options=RpcOptions ())1335 std::tuple<int, int, int> WaitForAllBackends(
1336 size_t start_index = 0, size_t stop_index = 0, bool reset_counters = true,
1337 const RpcOptions& rpc_options = RpcOptions()) {
1338 int num_ok = 0;
1339 int num_failure = 0;
1340 int num_drops = 0;
1341 int num_total = 0;
1342 while (!SeenAllBackends(start_index, stop_index, rpc_options)) {
1343 SendRpcAndCount(&num_total, &num_ok, &num_failure, &num_drops,
1344 rpc_options);
1345 }
1346 if (reset_counters) ResetBackendCounters();
1347 gpr_log(GPR_INFO,
1348 "Performed %d warm up requests against the backends. "
1349 "%d succeeded, %d failed, %d dropped.",
1350 num_total, num_ok, num_failure, num_drops);
1351 return std::make_tuple(num_ok, num_failure, num_drops);
1352 }
1353
WaitForBackend(size_t backend_idx,bool reset_counters=true,bool require_success=false)1354 void WaitForBackend(size_t backend_idx, bool reset_counters = true,
1355 bool require_success = false) {
1356 gpr_log(GPR_INFO, "========= WAITING FOR BACKEND %lu ==========",
1357 static_cast<unsigned long>(backend_idx));
1358 do {
1359 Status status = SendRpc();
1360 if (require_success) {
1361 EXPECT_TRUE(status.ok()) << "code=" << status.error_code()
1362 << " message=" << status.error_message();
1363 }
1364 } while (backends_[backend_idx]->backend_service()->request_count() == 0);
1365 if (reset_counters) ResetBackendCounters();
1366 gpr_log(GPR_INFO, "========= BACKEND %lu READY ==========",
1367 static_cast<unsigned long>(backend_idx));
1368 }
1369
CreateAddressListFromPortList(const std::vector<int> & ports)1370 grpc_core::ServerAddressList CreateAddressListFromPortList(
1371 const std::vector<int>& ports) {
1372 grpc_core::ServerAddressList addresses;
1373 for (int port : ports) {
1374 char* lb_uri_str;
1375 gpr_asprintf(&lb_uri_str, "ipv4:127.0.0.1:%d", port);
1376 grpc_uri* lb_uri = grpc_uri_parse(lb_uri_str, true);
1377 GPR_ASSERT(lb_uri != nullptr);
1378 grpc_resolved_address address;
1379 GPR_ASSERT(grpc_parse_uri(lb_uri, &address));
1380 addresses.emplace_back(address.addr, address.len, nullptr);
1381 grpc_uri_destroy(lb_uri);
1382 gpr_free(lb_uri_str);
1383 }
1384 return addresses;
1385 }
1386
SetNextResolution(const std::vector<int> & ports,grpc_core::FakeResolverResponseGenerator * lb_channel_response_generator=nullptr)1387 void SetNextResolution(const std::vector<int>& ports,
1388 grpc_core::FakeResolverResponseGenerator*
1389 lb_channel_response_generator = nullptr) {
1390 if (GetParam().use_xds_resolver()) return; // Not used with xds resolver.
1391 grpc_core::ExecCtx exec_ctx;
1392 grpc_core::Resolver::Result result;
1393 result.addresses = CreateAddressListFromPortList(ports);
1394 grpc_error* error = GRPC_ERROR_NONE;
1395 const char* service_config_json =
1396 GetParam().enable_load_reporting()
1397 ? kDefaultServiceConfig_
1398 : kDefaultServiceConfigWithoutLoadReporting_;
1399 result.service_config =
1400 grpc_core::ServiceConfig::Create(service_config_json, &error);
1401 ASSERT_EQ(error, GRPC_ERROR_NONE) << grpc_error_string(error);
1402 ASSERT_NE(result.service_config.get(), nullptr);
1403 grpc_arg arg = grpc_core::FakeResolverResponseGenerator::MakeChannelArg(
1404 lb_channel_response_generator == nullptr
1405 ? lb_channel_response_generator_.get()
1406 : lb_channel_response_generator);
1407 result.args = grpc_channel_args_copy_and_add(nullptr, &arg, 1);
1408 response_generator_->SetResponse(std::move(result));
1409 }
1410
SetNextResolutionForLbChannelAllBalancers(const char * service_config_json=nullptr,grpc_core::FakeResolverResponseGenerator * lb_channel_response_generator=nullptr)1411 void SetNextResolutionForLbChannelAllBalancers(
1412 const char* service_config_json = nullptr,
1413 grpc_core::FakeResolverResponseGenerator* lb_channel_response_generator =
1414 nullptr) {
1415 std::vector<int> ports;
1416 for (size_t i = 0; i < balancers_.size(); ++i) {
1417 ports.emplace_back(balancers_[i]->port());
1418 }
1419 SetNextResolutionForLbChannel(ports, service_config_json,
1420 lb_channel_response_generator);
1421 }
1422
SetNextResolutionForLbChannel(const std::vector<int> & ports,const char * service_config_json=nullptr,grpc_core::FakeResolverResponseGenerator * lb_channel_response_generator=nullptr)1423 void SetNextResolutionForLbChannel(
1424 const std::vector<int>& ports, const char* service_config_json = nullptr,
1425 grpc_core::FakeResolverResponseGenerator* lb_channel_response_generator =
1426 nullptr) {
1427 grpc_core::ExecCtx exec_ctx;
1428 grpc_core::Resolver::Result result;
1429 result.addresses = CreateAddressListFromPortList(ports);
1430 if (service_config_json != nullptr) {
1431 grpc_error* error = GRPC_ERROR_NONE;
1432 result.service_config =
1433 grpc_core::ServiceConfig::Create(service_config_json, &error);
1434 ASSERT_NE(result.service_config.get(), nullptr);
1435 ASSERT_EQ(error, GRPC_ERROR_NONE) << grpc_error_string(error);
1436 }
1437 if (lb_channel_response_generator == nullptr) {
1438 lb_channel_response_generator = lb_channel_response_generator_.get();
1439 }
1440 lb_channel_response_generator->SetResponse(std::move(result));
1441 }
1442
SetNextReresolutionResponse(const std::vector<int> & ports)1443 void SetNextReresolutionResponse(const std::vector<int>& ports) {
1444 grpc_core::ExecCtx exec_ctx;
1445 grpc_core::Resolver::Result result;
1446 result.addresses = CreateAddressListFromPortList(ports);
1447 response_generator_->SetReresolutionResponse(std::move(result));
1448 }
1449
GetBackendPorts(size_t start_index=0,size_t stop_index=0) const1450 const std::vector<int> GetBackendPorts(size_t start_index = 0,
1451 size_t stop_index = 0) const {
1452 if (stop_index == 0) stop_index = backends_.size();
1453 std::vector<int> backend_ports;
1454 for (size_t i = start_index; i < stop_index; ++i) {
1455 backend_ports.push_back(backends_[i]->port());
1456 }
1457 return backend_ports;
1458 }
1459
SendRpc(const RpcOptions & rpc_options=RpcOptions (),EchoResponse * response=nullptr)1460 Status SendRpc(const RpcOptions& rpc_options = RpcOptions(),
1461 EchoResponse* response = nullptr) {
1462 const bool local_response = (response == nullptr);
1463 if (local_response) response = new EchoResponse;
1464 EchoRequest request;
1465 ClientContext context;
1466 context.set_deadline(
1467 grpc_timeout_milliseconds_to_deadline(rpc_options.timeout_ms));
1468 if (rpc_options.wait_for_ready) context.set_wait_for_ready(true);
1469 request.set_message(kRequestMessage_);
1470 if (rpc_options.server_fail) {
1471 request.mutable_param()->mutable_expected_error()->set_code(
1472 GRPC_STATUS_FAILED_PRECONDITION);
1473 }
1474 Status status;
1475 switch (rpc_options.service) {
1476 case SERVICE_ECHO:
1477 status =
1478 SendRpcMethod(&stub_, rpc_options, &context, request, response);
1479 break;
1480 case SERVICE_ECHO1:
1481 status =
1482 SendRpcMethod(&stub1_, rpc_options, &context, request, response);
1483 break;
1484 case SERVICE_ECHO2:
1485 status =
1486 SendRpcMethod(&stub2_, rpc_options, &context, request, response);
1487 break;
1488 }
1489 if (local_response) delete response;
1490 return status;
1491 }
1492
CheckRpcSendOk(const size_t times=1,const RpcOptions & rpc_options=RpcOptions ())1493 void CheckRpcSendOk(const size_t times = 1,
1494 const RpcOptions& rpc_options = RpcOptions()) {
1495 for (size_t i = 0; i < times; ++i) {
1496 EchoResponse response;
1497 const Status status = SendRpc(rpc_options, &response);
1498 EXPECT_TRUE(status.ok()) << "code=" << status.error_code()
1499 << " message=" << status.error_message();
1500 EXPECT_EQ(response.message(), kRequestMessage_);
1501 }
1502 }
1503
CheckRpcSendFailure(const size_t times=1,bool server_fail=false)1504 void CheckRpcSendFailure(const size_t times = 1, bool server_fail = false) {
1505 for (size_t i = 0; i < times; ++i) {
1506 const Status status = SendRpc(RpcOptions().set_server_fail(server_fail));
1507 EXPECT_FALSE(status.ok());
1508 }
1509 }
1510
SetRouteConfiguration(int idx,const RouteConfiguration & route_config)1511 void SetRouteConfiguration(int idx, const RouteConfiguration& route_config) {
1512 if (GetParam().enable_rds_testing()) {
1513 balancers_[idx]->ads_service()->SetRdsResource(route_config);
1514 } else {
1515 balancers_[idx]->ads_service()->SetLdsResource(
1516 AdsServiceImpl::BuildListener(route_config));
1517 }
1518 }
1519
RouteConfigurationResponseState(int idx) const1520 AdsServiceImpl::ResponseState RouteConfigurationResponseState(int idx) const {
1521 AdsServiceImpl* ads_service = balancers_[idx]->ads_service();
1522 if (GetParam().enable_rds_testing()) {
1523 return ads_service->rds_response_state();
1524 }
1525 return ads_service->lds_response_state();
1526 }
1527
1528 public:
1529 // This method could benefit test subclasses; to make it accessible
1530 // via bind with a qualified name, it needs to be public.
SetEdsResourceWithDelay(size_t i,const ClusterLoadAssignment & assignment,int delay_ms)1531 void SetEdsResourceWithDelay(size_t i,
1532 const ClusterLoadAssignment& assignment,
1533 int delay_ms) {
1534 GPR_ASSERT(delay_ms > 0);
1535 gpr_sleep_until(grpc_timeout_milliseconds_to_deadline(delay_ms));
1536 balancers_[i]->ads_service()->SetEdsResource(assignment);
1537 }
1538
1539 protected:
1540 class ServerThread {
1541 public:
ServerThread()1542 ServerThread() : port_(g_port_saver->GetPort()) {}
~ServerThread()1543 virtual ~ServerThread(){};
1544
Start()1545 void Start() {
1546 gpr_log(GPR_INFO, "starting %s server on port %d", Type(), port_);
1547 GPR_ASSERT(!running_);
1548 running_ = true;
1549 StartAllServices();
1550 grpc_core::Mutex mu;
1551 // We need to acquire the lock here in order to prevent the notify_one
1552 // by ServerThread::Serve from firing before the wait below is hit.
1553 grpc_core::MutexLock lock(&mu);
1554 grpc_core::CondVar cond;
1555 thread_.reset(
1556 new std::thread(std::bind(&ServerThread::Serve, this, &mu, &cond)));
1557 cond.Wait(&mu);
1558 gpr_log(GPR_INFO, "%s server startup complete", Type());
1559 }
1560
Serve(grpc_core::Mutex * mu,grpc_core::CondVar * cond)1561 void Serve(grpc_core::Mutex* mu, grpc_core::CondVar* cond) {
1562 // We need to acquire the lock here in order to prevent the notify_one
1563 // below from firing before its corresponding wait is executed.
1564 grpc_core::MutexLock lock(mu);
1565 std::ostringstream server_address;
1566 server_address << "localhost:" << port_;
1567 ServerBuilder builder;
1568 std::shared_ptr<ServerCredentials> creds(new SecureServerCredentials(
1569 grpc_fake_transport_security_server_credentials_create()));
1570 builder.AddListeningPort(server_address.str(), creds);
1571 RegisterAllServices(&builder);
1572 server_ = builder.BuildAndStart();
1573 cond->Signal();
1574 }
1575
Shutdown()1576 void Shutdown() {
1577 if (!running_) return;
1578 gpr_log(GPR_INFO, "%s about to shutdown", Type());
1579 ShutdownAllServices();
1580 server_->Shutdown(grpc_timeout_milliseconds_to_deadline(0));
1581 thread_->join();
1582 gpr_log(GPR_INFO, "%s shutdown completed", Type());
1583 running_ = false;
1584 }
1585
port() const1586 int port() const { return port_; }
1587
1588 private:
1589 virtual void RegisterAllServices(ServerBuilder* builder) = 0;
1590 virtual void StartAllServices() = 0;
1591 virtual void ShutdownAllServices() = 0;
1592
1593 virtual const char* Type() = 0;
1594
1595 const int port_;
1596 std::unique_ptr<Server> server_;
1597 std::unique_ptr<std::thread> thread_;
1598 bool running_ = false;
1599 };
1600
1601 class BackendServerThread : public ServerThread {
1602 public:
1603 BackendServiceImpl<::grpc::testing::EchoTestService::Service>*
backend_service()1604 backend_service() {
1605 return &backend_service_;
1606 }
1607 BackendServiceImpl<::grpc::testing::EchoTest1Service::Service>*
backend_service1()1608 backend_service1() {
1609 return &backend_service1_;
1610 }
1611 BackendServiceImpl<::grpc::testing::EchoTest2Service::Service>*
backend_service2()1612 backend_service2() {
1613 return &backend_service2_;
1614 }
1615
1616 private:
RegisterAllServices(ServerBuilder * builder)1617 void RegisterAllServices(ServerBuilder* builder) override {
1618 builder->RegisterService(&backend_service_);
1619 builder->RegisterService(&backend_service1_);
1620 builder->RegisterService(&backend_service2_);
1621 }
1622
StartAllServices()1623 void StartAllServices() override {
1624 backend_service_.Start();
1625 backend_service1_.Start();
1626 backend_service2_.Start();
1627 }
1628
ShutdownAllServices()1629 void ShutdownAllServices() override {
1630 backend_service_.Shutdown();
1631 backend_service1_.Shutdown();
1632 backend_service2_.Shutdown();
1633 }
1634
Type()1635 const char* Type() override { return "Backend"; }
1636
1637 BackendServiceImpl<::grpc::testing::EchoTestService::Service>
1638 backend_service_;
1639 BackendServiceImpl<::grpc::testing::EchoTest1Service::Service>
1640 backend_service1_;
1641 BackendServiceImpl<::grpc::testing::EchoTest2Service::Service>
1642 backend_service2_;
1643 };
1644
1645 class BalancerServerThread : public ServerThread {
1646 public:
BalancerServerThread(int client_load_reporting_interval=0)1647 explicit BalancerServerThread(int client_load_reporting_interval = 0)
1648 : ads_service_(new AdsServiceImpl(client_load_reporting_interval > 0)),
1649 lrs_service_(new LrsServiceImpl(client_load_reporting_interval)) {}
1650
ads_service()1651 AdsServiceImpl* ads_service() { return ads_service_.get(); }
lrs_service()1652 LrsServiceImpl* lrs_service() { return lrs_service_.get(); }
1653
1654 private:
RegisterAllServices(ServerBuilder * builder)1655 void RegisterAllServices(ServerBuilder* builder) override {
1656 builder->RegisterService(ads_service_.get());
1657 builder->RegisterService(lrs_service_.get());
1658 }
1659
StartAllServices()1660 void StartAllServices() override {
1661 ads_service_->Start();
1662 lrs_service_->Start();
1663 }
1664
ShutdownAllServices()1665 void ShutdownAllServices() override {
1666 ads_service_->Shutdown();
1667 lrs_service_->Shutdown();
1668 }
1669
Type()1670 const char* Type() override { return "Balancer"; }
1671
1672 std::shared_ptr<AdsServiceImpl> ads_service_;
1673 std::shared_ptr<LrsServiceImpl> lrs_service_;
1674 };
1675
1676 const size_t num_backends_;
1677 const size_t num_balancers_;
1678 const int client_load_reporting_interval_seconds_;
1679 std::shared_ptr<Channel> channel_;
1680 std::unique_ptr<grpc::testing::EchoTestService::Stub> stub_;
1681 std::unique_ptr<grpc::testing::EchoTest1Service::Stub> stub1_;
1682 std::unique_ptr<grpc::testing::EchoTest2Service::Stub> stub2_;
1683 std::vector<std::unique_ptr<BackendServerThread>> backends_;
1684 std::vector<std::unique_ptr<BalancerServerThread>> balancers_;
1685 grpc_core::RefCountedPtr<grpc_core::FakeResolverResponseGenerator>
1686 response_generator_;
1687 grpc_core::RefCountedPtr<grpc_core::FakeResolverResponseGenerator>
1688 lb_channel_response_generator_;
1689 const grpc::string kRequestMessage_ = "Live long and prosper.";
1690 const grpc::string kApplicationTargetName_ = kDefaultResourceName;
1691 const char* kDefaultServiceConfig_ =
1692 "{\n"
1693 " \"loadBalancingConfig\":[\n"
1694 " { \"does_not_exist\":{} },\n"
1695 " { \"eds_experimental\":{\n"
1696 " \"clusterName\": \"application_target_name\",\n"
1697 " \"lrsLoadReportingServerName\": \"\"\n"
1698 " } }\n"
1699 " ]\n"
1700 "}";
1701 const char* kDefaultServiceConfigWithoutLoadReporting_ =
1702 "{\n"
1703 " \"loadBalancingConfig\":[\n"
1704 " { \"does_not_exist\":{} },\n"
1705 " { \"eds_experimental\":{\n"
1706 " \"clusterName\": \"application_target_name\"\n"
1707 " } }\n"
1708 " ]\n"
1709 "}";
1710 };
1711
1712 class BasicTest : public XdsEnd2endTest {
1713 public:
BasicTest()1714 BasicTest() : XdsEnd2endTest(4, 1) {}
1715 };
1716
1717 // Tests that the balancer sends the correct response to the client, and the
1718 // client sends RPCs to the backends using the default child policy.
TEST_P(BasicTest,Vanilla)1719 TEST_P(BasicTest, Vanilla) {
1720 SetNextResolution({});
1721 SetNextResolutionForLbChannelAllBalancers();
1722 const size_t kNumRpcsPerAddress = 100;
1723 AdsServiceImpl::EdsResourceArgs args({
1724 {"locality0", GetBackendPorts()},
1725 });
1726 balancers_[0]->ads_service()->SetEdsResource(
1727 AdsServiceImpl::BuildEdsResource(args));
1728 // Make sure that trying to connect works without a call.
1729 channel_->GetState(true /* try_to_connect */);
1730 // We need to wait for all backends to come online.
1731 WaitForAllBackends();
1732 // Send kNumRpcsPerAddress RPCs per server.
1733 CheckRpcSendOk(kNumRpcsPerAddress * num_backends_);
1734 // Each backend should have gotten 100 requests.
1735 for (size_t i = 0; i < backends_.size(); ++i) {
1736 EXPECT_EQ(kNumRpcsPerAddress,
1737 backends_[i]->backend_service()->request_count());
1738 }
1739 // Check LB policy name for the channel.
1740 EXPECT_EQ((GetParam().use_xds_resolver() ? "xds_routing_experimental"
1741 : "eds_experimental"),
1742 channel_->GetLoadBalancingPolicyName());
1743 }
1744
TEST_P(BasicTest,IgnoresUnhealthyEndpoints)1745 TEST_P(BasicTest, IgnoresUnhealthyEndpoints) {
1746 SetNextResolution({});
1747 SetNextResolutionForLbChannelAllBalancers();
1748 const size_t kNumRpcsPerAddress = 100;
1749 AdsServiceImpl::EdsResourceArgs args({
1750 {"locality0",
1751 GetBackendPorts(),
1752 kDefaultLocalityWeight,
1753 kDefaultLocalityPriority,
1754 {envoy::api::v2::HealthStatus::DRAINING}},
1755 });
1756 balancers_[0]->ads_service()->SetEdsResource(
1757 AdsServiceImpl::BuildEdsResource(args));
1758 // Make sure that trying to connect works without a call.
1759 channel_->GetState(true /* try_to_connect */);
1760 // We need to wait for all backends to come online.
1761 WaitForAllBackends(/*start_index=*/1);
1762 // Send kNumRpcsPerAddress RPCs per server.
1763 CheckRpcSendOk(kNumRpcsPerAddress * (num_backends_ - 1));
1764 // Each backend should have gotten 100 requests.
1765 for (size_t i = 1; i < backends_.size(); ++i) {
1766 EXPECT_EQ(kNumRpcsPerAddress,
1767 backends_[i]->backend_service()->request_count());
1768 }
1769 }
1770
1771 // Tests that subchannel sharing works when the same backend is listed multiple
1772 // times.
TEST_P(BasicTest,SameBackendListedMultipleTimes)1773 TEST_P(BasicTest, SameBackendListedMultipleTimes) {
1774 SetNextResolution({});
1775 SetNextResolutionForLbChannelAllBalancers();
1776 // Same backend listed twice.
1777 std::vector<int> ports(2, backends_[0]->port());
1778 AdsServiceImpl::EdsResourceArgs args({
1779 {"locality0", ports},
1780 });
1781 const size_t kNumRpcsPerAddress = 10;
1782 balancers_[0]->ads_service()->SetEdsResource(
1783 AdsServiceImpl::BuildEdsResource(args));
1784 // We need to wait for the backend to come online.
1785 WaitForBackend(0);
1786 // Send kNumRpcsPerAddress RPCs per server.
1787 CheckRpcSendOk(kNumRpcsPerAddress * ports.size());
1788 // Backend should have gotten 20 requests.
1789 EXPECT_EQ(kNumRpcsPerAddress * ports.size(),
1790 backends_[0]->backend_service()->request_count());
1791 // And they should have come from a single client port, because of
1792 // subchannel sharing.
1793 EXPECT_EQ(1UL, backends_[0]->backend_service()->clients().size());
1794 }
1795
1796 // Tests that RPCs will be blocked until a non-empty serverlist is received.
TEST_P(BasicTest,InitiallyEmptyServerlist)1797 TEST_P(BasicTest, InitiallyEmptyServerlist) {
1798 SetNextResolution({});
1799 SetNextResolutionForLbChannelAllBalancers();
1800 const int kServerlistDelayMs = 500 * grpc_test_slowdown_factor();
1801 const int kCallDeadlineMs = kServerlistDelayMs * 2;
1802 // First response is an empty serverlist, sent right away.
1803 AdsServiceImpl::EdsResourceArgs::Locality empty_locality("locality0", {});
1804 AdsServiceImpl::EdsResourceArgs args({
1805 empty_locality,
1806 });
1807 balancers_[0]->ads_service()->SetEdsResource(
1808 AdsServiceImpl::BuildEdsResource(args));
1809 // Send non-empty serverlist only after kServerlistDelayMs.
1810 args = AdsServiceImpl::EdsResourceArgs({
1811 {"locality0", GetBackendPorts()},
1812 });
1813 std::thread delayed_resource_setter(
1814 std::bind(&BasicTest::SetEdsResourceWithDelay, this, 0,
1815 AdsServiceImpl::BuildEdsResource(args), kServerlistDelayMs));
1816 const auto t0 = system_clock::now();
1817 // Client will block: LB will initially send empty serverlist.
1818 CheckRpcSendOk(
1819 1, RpcOptions().set_timeout_ms(kCallDeadlineMs).set_wait_for_ready(true));
1820 const auto ellapsed_ms =
1821 std::chrono::duration_cast<std::chrono::milliseconds>(
1822 system_clock::now() - t0);
1823 // but eventually, the LB sends a serverlist update that allows the call to
1824 // proceed. The call delay must be larger than the delay in sending the
1825 // populated serverlist but under the call's deadline (which is enforced by
1826 // the call's deadline).
1827 EXPECT_GT(ellapsed_ms.count(), kServerlistDelayMs);
1828 delayed_resource_setter.join();
1829 }
1830
1831 // Tests that RPCs will fail with UNAVAILABLE instead of DEADLINE_EXCEEDED if
1832 // all the servers are unreachable.
TEST_P(BasicTest,AllServersUnreachableFailFast)1833 TEST_P(BasicTest, AllServersUnreachableFailFast) {
1834 SetNextResolution({});
1835 SetNextResolutionForLbChannelAllBalancers();
1836 const size_t kNumUnreachableServers = 5;
1837 std::vector<int> ports;
1838 for (size_t i = 0; i < kNumUnreachableServers; ++i) {
1839 ports.push_back(g_port_saver->GetPort());
1840 }
1841 AdsServiceImpl::EdsResourceArgs args({
1842 {"locality0", ports},
1843 });
1844 balancers_[0]->ads_service()->SetEdsResource(
1845 AdsServiceImpl::BuildEdsResource(args));
1846 const Status status = SendRpc();
1847 // The error shouldn't be DEADLINE_EXCEEDED.
1848 EXPECT_EQ(StatusCode::UNAVAILABLE, status.error_code());
1849 }
1850
1851 // Tests that RPCs fail when the backends are down, and will succeed again after
1852 // the backends are restarted.
TEST_P(BasicTest,BackendsRestart)1853 TEST_P(BasicTest, BackendsRestart) {
1854 SetNextResolution({});
1855 SetNextResolutionForLbChannelAllBalancers();
1856 AdsServiceImpl::EdsResourceArgs args({
1857 {"locality0", GetBackendPorts()},
1858 });
1859 balancers_[0]->ads_service()->SetEdsResource(
1860 AdsServiceImpl::BuildEdsResource(args));
1861 WaitForAllBackends();
1862 // Stop backends. RPCs should fail.
1863 ShutdownAllBackends();
1864 // Sending multiple failed requests instead of just one to ensure that the
1865 // client notices that all backends are down before we restart them. If we
1866 // didn't do this, then a single RPC could fail here due to the race condition
1867 // between the LB pick and the GOAWAY from the chosen backend being shut down,
1868 // which would not actually prove that the client noticed that all of the
1869 // backends are down. Then, when we send another request below (which we
1870 // expect to succeed), if the callbacks happen in the wrong order, the same
1871 // race condition could happen again due to the client not yet having noticed
1872 // that the backends were all down.
1873 CheckRpcSendFailure(num_backends_);
1874 // Restart all backends. RPCs should start succeeding again.
1875 StartAllBackends();
1876 CheckRpcSendOk(1, RpcOptions().set_timeout_ms(2000).set_wait_for_ready(true));
1877 }
1878
1879 using XdsResolverOnlyTest = BasicTest;
1880
1881 // Tests switching over from one cluster to another.
TEST_P(XdsResolverOnlyTest,ChangeClusters)1882 TEST_P(XdsResolverOnlyTest, ChangeClusters) {
1883 const char* kNewClusterName = "new_cluster_name";
1884 SetNextResolution({});
1885 SetNextResolutionForLbChannelAllBalancers();
1886 AdsServiceImpl::EdsResourceArgs args({
1887 {"locality0", GetBackendPorts(0, 2)},
1888 });
1889 balancers_[0]->ads_service()->SetEdsResource(
1890 AdsServiceImpl::BuildEdsResource(args));
1891 // We need to wait for all backends to come online.
1892 WaitForAllBackends(0, 2);
1893 // Populate new EDS resource.
1894 AdsServiceImpl::EdsResourceArgs args2({
1895 {"locality0", GetBackendPorts(2, 4)},
1896 });
1897 balancers_[0]->ads_service()->SetEdsResource(
1898 AdsServiceImpl::BuildEdsResource(args2, kNewClusterName));
1899 // Populate new CDS resource.
1900 Cluster new_cluster = balancers_[0]->ads_service()->default_cluster();
1901 new_cluster.set_name(kNewClusterName);
1902 balancers_[0]->ads_service()->SetCdsResource(new_cluster);
1903 // Change RDS resource to point to new cluster.
1904 RouteConfiguration new_route_config =
1905 balancers_[0]->ads_service()->default_route_config();
1906 new_route_config.mutable_virtual_hosts(0)
1907 ->mutable_routes(0)
1908 ->mutable_route()
1909 ->set_cluster(kNewClusterName);
1910 Listener listener =
1911 balancers_[0]->ads_service()->BuildListener(new_route_config);
1912 balancers_[0]->ads_service()->SetLdsResource(listener);
1913 // Wait for all new backends to be used.
1914 std::tuple<int, int, int> counts = WaitForAllBackends(2, 4);
1915 // Make sure no RPCs failed in the transition.
1916 EXPECT_EQ(0, std::get<1>(counts));
1917 }
1918
1919 // Tests that we go into TRANSIENT_FAILURE if the Cluster disappears.
TEST_P(XdsResolverOnlyTest,ClusterRemoved)1920 TEST_P(XdsResolverOnlyTest, ClusterRemoved) {
1921 SetNextResolution({});
1922 SetNextResolutionForLbChannelAllBalancers();
1923 AdsServiceImpl::EdsResourceArgs args({
1924 {"locality0", GetBackendPorts()},
1925 });
1926 balancers_[0]->ads_service()->SetEdsResource(
1927 AdsServiceImpl::BuildEdsResource(args));
1928 // We need to wait for all backends to come online.
1929 WaitForAllBackends();
1930 // Unset CDS resource.
1931 balancers_[0]->ads_service()->UnsetResource(kCdsTypeUrl,
1932 kDefaultResourceName);
1933 // Wait for RPCs to start failing.
1934 do {
1935 } while (SendRpc(RpcOptions(), nullptr).ok());
1936 // Make sure RPCs are still failing.
1937 CheckRpcSendFailure(1000);
1938 // Make sure we ACK'ed the update.
1939 EXPECT_EQ(balancers_[0]->ads_service()->cds_response_state().state,
1940 AdsServiceImpl::ResponseState::ACKED);
1941 }
1942
1943 // Tests that we restart all xDS requests when we reestablish the ADS call.
TEST_P(XdsResolverOnlyTest,RestartsRequestsUponReconnection)1944 TEST_P(XdsResolverOnlyTest, RestartsRequestsUponReconnection) {
1945 balancers_[0]->ads_service()->SetLdsToUseDynamicRds();
1946 const char* kNewClusterName = "new_cluster_name";
1947 SetNextResolution({});
1948 SetNextResolutionForLbChannelAllBalancers();
1949 AdsServiceImpl::EdsResourceArgs args({
1950 {"locality0", GetBackendPorts(0, 2)},
1951 });
1952 balancers_[0]->ads_service()->SetEdsResource(
1953 AdsServiceImpl::BuildEdsResource(args));
1954 // We need to wait for all backends to come online.
1955 WaitForAllBackends(0, 2);
1956 // Now shut down and restart the balancer. When the client
1957 // reconnects, it should automatically restart the requests for all
1958 // resource types.
1959 balancers_[0]->Shutdown();
1960 balancers_[0]->Start();
1961 // Make sure things are still working.
1962 CheckRpcSendOk(100);
1963 // Populate new EDS resource.
1964 AdsServiceImpl::EdsResourceArgs args2({
1965 {"locality0", GetBackendPorts(2, 4)},
1966 });
1967 balancers_[0]->ads_service()->SetEdsResource(
1968 AdsServiceImpl::BuildEdsResource(args2, kNewClusterName));
1969 // Populate new CDS resource.
1970 Cluster new_cluster = balancers_[0]->ads_service()->default_cluster();
1971 new_cluster.set_name(kNewClusterName);
1972 balancers_[0]->ads_service()->SetCdsResource(new_cluster);
1973 // Change RDS resource to point to new cluster.
1974 RouteConfiguration new_route_config =
1975 balancers_[0]->ads_service()->default_route_config();
1976 new_route_config.mutable_virtual_hosts(0)
1977 ->mutable_routes(0)
1978 ->mutable_route()
1979 ->set_cluster(kNewClusterName);
1980 balancers_[0]->ads_service()->SetRdsResource(new_route_config);
1981 // Wait for all new backends to be used.
1982 std::tuple<int, int, int> counts = WaitForAllBackends(2, 4);
1983 // Make sure no RPCs failed in the transition.
1984 EXPECT_EQ(0, std::get<1>(counts));
1985 }
1986
TEST_P(XdsResolverOnlyTest,DefaultRouteSpecifiesSlashPrefix)1987 TEST_P(XdsResolverOnlyTest, DefaultRouteSpecifiesSlashPrefix) {
1988 RouteConfiguration route_config =
1989 balancers_[0]->ads_service()->default_route_config();
1990 route_config.mutable_virtual_hosts(0)
1991 ->mutable_routes(0)
1992 ->mutable_match()
1993 ->set_prefix("/");
1994 balancers_[0]->ads_service()->SetLdsResource(
1995 AdsServiceImpl::BuildListener(route_config));
1996 SetNextResolution({});
1997 SetNextResolutionForLbChannelAllBalancers();
1998 AdsServiceImpl::EdsResourceArgs args({
1999 {"locality0", GetBackendPorts()},
2000 });
2001 balancers_[0]->ads_service()->SetEdsResource(
2002 AdsServiceImpl::BuildEdsResource(args));
2003 // We need to wait for all backends to come online.
2004 WaitForAllBackends();
2005 }
2006
2007 class XdsResolverLoadReportingOnlyTest : public XdsEnd2endTest {
2008 public:
XdsResolverLoadReportingOnlyTest()2009 XdsResolverLoadReportingOnlyTest() : XdsEnd2endTest(4, 1, 3) {}
2010 };
2011
2012 // Tests load reporting when switching over from one cluster to another.
TEST_P(XdsResolverLoadReportingOnlyTest,ChangeClusters)2013 TEST_P(XdsResolverLoadReportingOnlyTest, ChangeClusters) {
2014 const char* kNewClusterName = "new_cluster_name";
2015 balancers_[0]->lrs_service()->set_cluster_names(
2016 {kDefaultResourceName, kNewClusterName});
2017 SetNextResolution({});
2018 SetNextResolutionForLbChannelAllBalancers();
2019 // cluster kDefaultResourceName -> locality0 -> backends 0 and 1
2020 AdsServiceImpl::EdsResourceArgs args({
2021 {"locality0", GetBackendPorts(0, 2)},
2022 });
2023 balancers_[0]->ads_service()->SetEdsResource(
2024 AdsServiceImpl::BuildEdsResource(args));
2025 // cluster kNewClusterName -> locality1 -> backends 2 and 3
2026 AdsServiceImpl::EdsResourceArgs args2({
2027 {"locality1", GetBackendPorts(2, 4)},
2028 });
2029 balancers_[0]->ads_service()->SetEdsResource(
2030 AdsServiceImpl::BuildEdsResource(args2, kNewClusterName));
2031 // CDS resource for kNewClusterName.
2032 Cluster new_cluster = balancers_[0]->ads_service()->default_cluster();
2033 new_cluster.set_name(kNewClusterName);
2034 balancers_[0]->ads_service()->SetCdsResource(new_cluster);
2035 // Wait for all backends to come online.
2036 int num_ok = 0;
2037 int num_failure = 0;
2038 int num_drops = 0;
2039 std::tie(num_ok, num_failure, num_drops) = WaitForAllBackends(0, 2);
2040 // The load report received at the balancer should be correct.
2041 std::vector<ClientStats> load_report =
2042 balancers_[0]->lrs_service()->WaitForLoadReport();
2043 EXPECT_THAT(
2044 load_report,
2045 ::testing::ElementsAre(::testing::AllOf(
2046 ::testing::Property(&ClientStats::cluster_name, kDefaultResourceName),
2047 ::testing::Property(
2048 &ClientStats::locality_stats,
2049 ::testing::ElementsAre(::testing::Pair(
2050 "locality0",
2051 ::testing::AllOf(
2052 ::testing::Field(&ClientStats::LocalityStats::
2053 total_successful_requests,
2054 num_ok),
2055 ::testing::Field(&ClientStats::LocalityStats::
2056 total_requests_in_progress,
2057 0UL),
2058 ::testing::Field(
2059 &ClientStats::LocalityStats::total_error_requests,
2060 num_failure),
2061 ::testing::Field(
2062 &ClientStats::LocalityStats::total_issued_requests,
2063 num_failure + num_ok))))),
2064 ::testing::Property(&ClientStats::total_dropped_requests,
2065 num_drops))));
2066 // Change RDS resource to point to new cluster.
2067 RouteConfiguration new_route_config =
2068 balancers_[0]->ads_service()->default_route_config();
2069 new_route_config.mutable_virtual_hosts(0)
2070 ->mutable_routes(0)
2071 ->mutable_route()
2072 ->set_cluster(kNewClusterName);
2073 Listener listener =
2074 balancers_[0]->ads_service()->BuildListener(new_route_config);
2075 balancers_[0]->ads_service()->SetLdsResource(listener);
2076 // Wait for all new backends to be used.
2077 std::tie(num_ok, num_failure, num_drops) = WaitForAllBackends(2, 4);
2078 // The load report received at the balancer should be correct.
2079 load_report = balancers_[0]->lrs_service()->WaitForLoadReport();
2080 EXPECT_THAT(
2081 load_report,
2082 ::testing::ElementsAre(
2083 ::testing::AllOf(
2084 ::testing::Property(&ClientStats::cluster_name,
2085 kDefaultResourceName),
2086 ::testing::Property(
2087 &ClientStats::locality_stats,
2088 ::testing::ElementsAre(::testing::Pair(
2089 "locality0",
2090 ::testing::AllOf(
2091 ::testing::Field(&ClientStats::LocalityStats::
2092 total_successful_requests,
2093 ::testing::Lt(num_ok)),
2094 ::testing::Field(&ClientStats::LocalityStats::
2095 total_requests_in_progress,
2096 0UL),
2097 ::testing::Field(
2098 &ClientStats::LocalityStats::total_error_requests,
2099 ::testing::Le(num_failure)),
2100 ::testing::Field(
2101 &ClientStats::LocalityStats::
2102 total_issued_requests,
2103 ::testing::Le(num_failure + num_ok)))))),
2104 ::testing::Property(&ClientStats::total_dropped_requests,
2105 num_drops)),
2106 ::testing::AllOf(
2107 ::testing::Property(&ClientStats::cluster_name, kNewClusterName),
2108 ::testing::Property(
2109 &ClientStats::locality_stats,
2110 ::testing::ElementsAre(::testing::Pair(
2111 "locality1",
2112 ::testing::AllOf(
2113 ::testing::Field(&ClientStats::LocalityStats::
2114 total_successful_requests,
2115 ::testing::Le(num_ok)),
2116 ::testing::Field(&ClientStats::LocalityStats::
2117 total_requests_in_progress,
2118 0UL),
2119 ::testing::Field(
2120 &ClientStats::LocalityStats::total_error_requests,
2121 ::testing::Le(num_failure)),
2122 ::testing::Field(
2123 &ClientStats::LocalityStats::
2124 total_issued_requests,
2125 ::testing::Le(num_failure + num_ok)))))),
2126 ::testing::Property(&ClientStats::total_dropped_requests,
2127 num_drops))));
2128 int total_ok = 0;
2129 int total_failure = 0;
2130 for (const ClientStats& client_stats : load_report) {
2131 total_ok += client_stats.total_successful_requests();
2132 total_failure += client_stats.total_error_requests();
2133 }
2134 EXPECT_EQ(total_ok, num_ok);
2135 EXPECT_EQ(total_failure, num_failure);
2136 // The LRS service got a single request, and sent a single response.
2137 EXPECT_EQ(1U, balancers_[0]->lrs_service()->request_count());
2138 EXPECT_EQ(1U, balancers_[0]->lrs_service()->response_count());
2139 }
2140
2141 using SecureNamingTest = BasicTest;
2142
2143 // Tests that secure naming check passes if target name is expected.
TEST_P(SecureNamingTest,TargetNameIsExpected)2144 TEST_P(SecureNamingTest, TargetNameIsExpected) {
2145 // TODO(juanlishen): Use separate fake creds for the balancer channel.
2146 ResetStub(0, kApplicationTargetName_ + ";lb");
2147 SetNextResolution({});
2148 SetNextResolutionForLbChannel({balancers_[0]->port()});
2149 const size_t kNumRpcsPerAddress = 100;
2150 AdsServiceImpl::EdsResourceArgs args({
2151 {"locality0", GetBackendPorts()},
2152 });
2153 balancers_[0]->ads_service()->SetEdsResource(
2154 AdsServiceImpl::BuildEdsResource(args));
2155 // Make sure that trying to connect works without a call.
2156 channel_->GetState(true /* try_to_connect */);
2157 // We need to wait for all backends to come online.
2158 WaitForAllBackends();
2159 // Send kNumRpcsPerAddress RPCs per server.
2160 CheckRpcSendOk(kNumRpcsPerAddress * num_backends_);
2161 // Each backend should have gotten 100 requests.
2162 for (size_t i = 0; i < backends_.size(); ++i) {
2163 EXPECT_EQ(kNumRpcsPerAddress,
2164 backends_[i]->backend_service()->request_count());
2165 }
2166 }
2167
2168 // Tests that secure naming check fails if target name is unexpected.
TEST_P(SecureNamingTest,TargetNameIsUnexpected)2169 TEST_P(SecureNamingTest, TargetNameIsUnexpected) {
2170 gpr_setenv("GRPC_XDS_BOOTSTRAP", g_bootstrap_file_bad);
2171 ::testing::FLAGS_gtest_death_test_style = "threadsafe";
2172 // Make sure that we blow up (via abort() from the security connector) when
2173 // the name from the balancer doesn't match expectations.
2174 ASSERT_DEATH_IF_SUPPORTED(
2175 {
2176 ResetStub(0, kApplicationTargetName_ + ";lb");
2177 SetNextResolution({});
2178 SetNextResolutionForLbChannel({balancers_[0]->port()});
2179 channel_->WaitForConnected(grpc_timeout_seconds_to_deadline(1));
2180 },
2181 "");
2182 }
2183
2184 using LdsTest = BasicTest;
2185
2186 // Tests that LDS client should send a NACK if there is no API listener in the
2187 // Listener in the LDS response.
TEST_P(LdsTest,NoApiListener)2188 TEST_P(LdsTest, NoApiListener) {
2189 auto listener = balancers_[0]->ads_service()->default_listener();
2190 listener.clear_api_listener();
2191 balancers_[0]->ads_service()->SetLdsResource(listener);
2192 SetNextResolution({});
2193 SetNextResolutionForLbChannelAllBalancers();
2194 CheckRpcSendFailure();
2195 const auto& response_state =
2196 balancers_[0]->ads_service()->lds_response_state();
2197 EXPECT_EQ(response_state.state, AdsServiceImpl::ResponseState::NACKED);
2198 EXPECT_EQ(response_state.error_message, "Listener has no ApiListener.");
2199 }
2200
2201 // Tests that LDS client should send a NACK if the route_specifier in the
2202 // http_connection_manager is neither inlined route_config nor RDS.
TEST_P(LdsTest,WrongRouteSpecifier)2203 TEST_P(LdsTest, WrongRouteSpecifier) {
2204 auto listener = balancers_[0]->ads_service()->default_listener();
2205 HttpConnectionManager http_connection_manager;
2206 http_connection_manager.mutable_scoped_routes();
2207 listener.mutable_api_listener()->mutable_api_listener()->PackFrom(
2208 http_connection_manager);
2209 balancers_[0]->ads_service()->SetLdsResource(listener);
2210 SetNextResolution({});
2211 SetNextResolutionForLbChannelAllBalancers();
2212 CheckRpcSendFailure();
2213 const auto& response_state =
2214 balancers_[0]->ads_service()->lds_response_state();
2215 EXPECT_EQ(response_state.state, AdsServiceImpl::ResponseState::NACKED);
2216 EXPECT_EQ(response_state.error_message,
2217 "HttpConnectionManager neither has inlined route_config nor RDS.");
2218 }
2219
2220 // Tests that LDS client should send a NACK if the rds message in the
2221 // http_connection_manager is missing the config_source field.
TEST_P(LdsTest,RdsMissingConfigSource)2222 TEST_P(LdsTest, RdsMissingConfigSource) {
2223 auto listener = balancers_[0]->ads_service()->default_listener();
2224 HttpConnectionManager http_connection_manager;
2225 http_connection_manager.mutable_rds()->set_route_config_name(
2226 kDefaultResourceName);
2227 listener.mutable_api_listener()->mutable_api_listener()->PackFrom(
2228 http_connection_manager);
2229 balancers_[0]->ads_service()->SetLdsResource(listener);
2230 SetNextResolution({});
2231 SetNextResolutionForLbChannelAllBalancers();
2232 CheckRpcSendFailure();
2233 const auto& response_state =
2234 balancers_[0]->ads_service()->lds_response_state();
2235 EXPECT_EQ(response_state.state, AdsServiceImpl::ResponseState::NACKED);
2236 EXPECT_EQ(response_state.error_message,
2237 "HttpConnectionManager missing config_source for RDS.");
2238 }
2239
2240 // Tests that LDS client should send a NACK if the rds message in the
2241 // http_connection_manager has a config_source field that does not specify ADS.
TEST_P(LdsTest,RdsConfigSourceDoesNotSpecifyAds)2242 TEST_P(LdsTest, RdsConfigSourceDoesNotSpecifyAds) {
2243 auto listener = balancers_[0]->ads_service()->default_listener();
2244 HttpConnectionManager http_connection_manager;
2245 auto* rds = http_connection_manager.mutable_rds();
2246 rds->set_route_config_name(kDefaultResourceName);
2247 rds->mutable_config_source()->mutable_self();
2248 listener.mutable_api_listener()->mutable_api_listener()->PackFrom(
2249 http_connection_manager);
2250 balancers_[0]->ads_service()->SetLdsResource(listener);
2251 SetNextResolution({});
2252 SetNextResolutionForLbChannelAllBalancers();
2253 CheckRpcSendFailure();
2254 const auto& response_state =
2255 balancers_[0]->ads_service()->lds_response_state();
2256 EXPECT_EQ(response_state.state, AdsServiceImpl::ResponseState::NACKED);
2257 EXPECT_EQ(response_state.error_message,
2258 "HttpConnectionManager ConfigSource for RDS does not specify ADS.");
2259 }
2260
2261 using LdsRdsTest = BasicTest;
2262
2263 // Tests that LDS client should send an ACK upon correct LDS response (with
2264 // inlined RDS result).
TEST_P(LdsRdsTest,Vanilla)2265 TEST_P(LdsRdsTest, Vanilla) {
2266 SetNextResolution({});
2267 SetNextResolutionForLbChannelAllBalancers();
2268 (void)SendRpc();
2269 EXPECT_EQ(RouteConfigurationResponseState(0).state,
2270 AdsServiceImpl::ResponseState::ACKED);
2271 }
2272
2273 // Tests that we go into TRANSIENT_FAILURE if the Listener is removed.
TEST_P(LdsRdsTest,ListenerRemoved)2274 TEST_P(LdsRdsTest, ListenerRemoved) {
2275 SetNextResolution({});
2276 SetNextResolutionForLbChannelAllBalancers();
2277 AdsServiceImpl::EdsResourceArgs args({
2278 {"locality0", GetBackendPorts()},
2279 });
2280 balancers_[0]->ads_service()->SetEdsResource(
2281 AdsServiceImpl::BuildEdsResource(args));
2282 // We need to wait for all backends to come online.
2283 WaitForAllBackends();
2284 // Unset LDS resource.
2285 balancers_[0]->ads_service()->UnsetResource(kLdsTypeUrl,
2286 kDefaultResourceName);
2287 // Wait for RPCs to start failing.
2288 do {
2289 } while (SendRpc(RpcOptions(), nullptr).ok());
2290 // Make sure RPCs are still failing.
2291 CheckRpcSendFailure(1000);
2292 // Make sure we ACK'ed the update.
2293 EXPECT_EQ(balancers_[0]->ads_service()->lds_response_state().state,
2294 AdsServiceImpl::ResponseState::ACKED);
2295 }
2296
2297 // Tests that LDS client should send a NACK if matching domain can't be found in
2298 // the LDS response.
TEST_P(LdsRdsTest,NoMatchedDomain)2299 TEST_P(LdsRdsTest, NoMatchedDomain) {
2300 RouteConfiguration route_config =
2301 balancers_[0]->ads_service()->default_route_config();
2302 route_config.mutable_virtual_hosts(0)->clear_domains();
2303 route_config.mutable_virtual_hosts(0)->add_domains("unmatched_domain");
2304 SetRouteConfiguration(0, route_config);
2305 SetNextResolution({});
2306 SetNextResolutionForLbChannelAllBalancers();
2307 CheckRpcSendFailure();
2308 const auto& response_state = RouteConfigurationResponseState(0);
2309 EXPECT_EQ(response_state.state, AdsServiceImpl::ResponseState::NACKED);
2310 EXPECT_EQ(response_state.error_message,
2311 "No matched virtual host found in the route config.");
2312 }
2313
2314 // Tests that LDS client should choose the virtual host with matching domain if
2315 // multiple virtual hosts exist in the LDS response.
TEST_P(LdsRdsTest,ChooseMatchedDomain)2316 TEST_P(LdsRdsTest, ChooseMatchedDomain) {
2317 RouteConfiguration route_config =
2318 balancers_[0]->ads_service()->default_route_config();
2319 *(route_config.add_virtual_hosts()) = route_config.virtual_hosts(0);
2320 route_config.mutable_virtual_hosts(0)->clear_domains();
2321 route_config.mutable_virtual_hosts(0)->add_domains("unmatched_domain");
2322 route_config.mutable_virtual_hosts(0)
2323 ->mutable_routes(0)
2324 ->mutable_route()
2325 ->mutable_cluster_header();
2326 SetRouteConfiguration(0, route_config);
2327 SetNextResolution({});
2328 SetNextResolutionForLbChannelAllBalancers();
2329 (void)SendRpc();
2330 EXPECT_EQ(RouteConfigurationResponseState(0).state,
2331 AdsServiceImpl::ResponseState::ACKED);
2332 }
2333
2334 // Tests that LDS client should choose the last route in the virtual host if
2335 // multiple routes exist in the LDS response.
TEST_P(LdsRdsTest,ChooseLastRoute)2336 TEST_P(LdsRdsTest, ChooseLastRoute) {
2337 RouteConfiguration route_config =
2338 balancers_[0]->ads_service()->default_route_config();
2339 *(route_config.mutable_virtual_hosts(0)->add_routes()) =
2340 route_config.virtual_hosts(0).routes(0);
2341 route_config.mutable_virtual_hosts(0)
2342 ->mutable_routes(0)
2343 ->mutable_route()
2344 ->mutable_cluster_header();
2345 SetRouteConfiguration(0, route_config);
2346 SetNextResolution({});
2347 SetNextResolutionForLbChannelAllBalancers();
2348 (void)SendRpc();
2349 EXPECT_EQ(RouteConfigurationResponseState(0).state,
2350 AdsServiceImpl::ResponseState::ACKED);
2351 }
2352
2353 // Tests that LDS client should send a NACK if route match has non-empty prefix
2354 // as the only route (default) in the LDS response.
TEST_P(LdsRdsTest,RouteMatchHasNonemptyPrefix)2355 TEST_P(LdsRdsTest, RouteMatchHasNonemptyPrefix) {
2356 RouteConfiguration route_config =
2357 balancers_[0]->ads_service()->default_route_config();
2358 route_config.mutable_virtual_hosts(0)
2359 ->mutable_routes(0)
2360 ->mutable_match()
2361 ->set_prefix("/nonempty_prefix/");
2362 SetRouteConfiguration(0, route_config);
2363 SetNextResolution({});
2364 SetNextResolutionForLbChannelAllBalancers();
2365 CheckRpcSendFailure();
2366 const auto& response_state = RouteConfigurationResponseState(0);
2367 balancers_[0]->ads_service()->lds_response_state();
2368 EXPECT_EQ(response_state.state, AdsServiceImpl::ResponseState::NACKED);
2369 EXPECT_EQ(response_state.error_message,
2370 "Default route must have empty prefix.");
2371 }
2372
2373 // Tests that LDS client should send a NACK if route match has path specifier
2374 // besides prefix as the only route (default) in the LDS response.
TEST_P(LdsRdsTest,RouteMatchHasUnsupportedSpecifier)2375 TEST_P(LdsRdsTest, RouteMatchHasUnsupportedSpecifier) {
2376 RouteConfiguration route_config =
2377 balancers_[0]->ads_service()->default_route_config();
2378 route_config.mutable_virtual_hosts(0)
2379 ->mutable_routes(0)
2380 ->mutable_match()
2381 ->set_path("");
2382 SetRouteConfiguration(0, route_config);
2383 SetNextResolution({});
2384 SetNextResolutionForLbChannelAllBalancers();
2385 CheckRpcSendFailure();
2386 const auto& response_state = RouteConfigurationResponseState(0);
2387 balancers_[0]->ads_service()->lds_response_state();
2388 EXPECT_EQ(response_state.state, AdsServiceImpl::ResponseState::NACKED);
2389 EXPECT_EQ(response_state.error_message,
2390 "No prefix field found in Default RouteMatch.");
2391 }
2392
2393 // Tests that LDS client should send a NACK if route match has a prefix
2394 // string with no "/".
TEST_P(LdsRdsTest,RouteMatchHasInvalidPrefixNonEmptyNoSlash)2395 TEST_P(LdsRdsTest, RouteMatchHasInvalidPrefixNonEmptyNoSlash) {
2396 gpr_setenv("GRPC_XDS_EXPERIMENTAL_ROUTING", "true");
2397 RouteConfiguration route_config =
2398 balancers_[0]->ads_service()->default_route_config();
2399 auto* route1 = route_config.mutable_virtual_hosts(0)->mutable_routes(0);
2400 route1->mutable_match()->set_prefix("grpc.testing.EchoTest1Service");
2401 auto* default_route = route_config.mutable_virtual_hosts(0)->add_routes();
2402 default_route->mutable_match()->set_prefix("");
2403 default_route->mutable_route()->set_cluster(kDefaultResourceName);
2404 SetRouteConfiguration(0, route_config);
2405 SetNextResolution({});
2406 SetNextResolutionForLbChannelAllBalancers();
2407 CheckRpcSendFailure();
2408 const auto& response_state = RouteConfigurationResponseState(0);
2409 EXPECT_EQ(response_state.state, AdsServiceImpl::ResponseState::NACKED);
2410 EXPECT_EQ(response_state.error_message, "Prefix does not start with a /");
2411 gpr_unsetenv("GRPC_XDS_EXPERIMENTAL_ROUTING");
2412 }
2413
2414 // Tests that LDS client should send a NACK if route match has a prefix
2415 // string does not end with "/".
TEST_P(LdsRdsTest,RouteMatchHasInvalidPrefixNoEndingSlash)2416 TEST_P(LdsRdsTest, RouteMatchHasInvalidPrefixNoEndingSlash) {
2417 gpr_setenv("GRPC_XDS_EXPERIMENTAL_ROUTING", "true");
2418 RouteConfiguration route_config =
2419 balancers_[0]->ads_service()->default_route_config();
2420 auto* route1 = route_config.mutable_virtual_hosts(0)->mutable_routes(0);
2421 route1->mutable_match()->set_prefix("/grpc.testing.EchoTest1Service");
2422 SetRouteConfiguration(0, route_config);
2423 SetNextResolution({});
2424 SetNextResolutionForLbChannelAllBalancers();
2425 CheckRpcSendFailure();
2426 const auto& response_state = RouteConfigurationResponseState(0);
2427 EXPECT_EQ(response_state.state, AdsServiceImpl::ResponseState::NACKED);
2428 EXPECT_EQ(response_state.error_message,
2429 "Prefix not in the required format of /service/");
2430 gpr_unsetenv("GRPC_XDS_EXPERIMENTAL_ROUTING");
2431 }
2432
2433 // Tests that LDS client should send a NACK if route match has a prefix
2434 // string does not start with "/".
TEST_P(LdsRdsTest,RouteMatchHasInvalidPrefixNoLeadingSlash)2435 TEST_P(LdsRdsTest, RouteMatchHasInvalidPrefixNoLeadingSlash) {
2436 gpr_setenv("GRPC_XDS_EXPERIMENTAL_ROUTING", "true");
2437 RouteConfiguration route_config =
2438 balancers_[0]->ads_service()->default_route_config();
2439 auto* route1 = route_config.mutable_virtual_hosts(0)->mutable_routes(0);
2440 route1->mutable_match()->set_prefix("grpc.testing.EchoTest1Service/");
2441 SetRouteConfiguration(0, route_config);
2442 SetNextResolution({});
2443 SetNextResolutionForLbChannelAllBalancers();
2444 CheckRpcSendFailure();
2445 const auto& response_state = RouteConfigurationResponseState(0);
2446 EXPECT_EQ(response_state.state, AdsServiceImpl::ResponseState::NACKED);
2447 EXPECT_EQ(response_state.error_message, "Prefix does not start with a /");
2448 gpr_unsetenv("GRPC_XDS_EXPERIMENTAL_ROUTING");
2449 }
2450
2451 // Tests that LDS client should send a NACK if route match has a prefix
2452 // string with extra content outside of "/service/".
TEST_P(LdsRdsTest,RouteMatchHasInvalidPrefixExtraContent)2453 TEST_P(LdsRdsTest, RouteMatchHasInvalidPrefixExtraContent) {
2454 gpr_setenv("GRPC_XDS_EXPERIMENTAL_ROUTING", "true");
2455 RouteConfiguration route_config =
2456 balancers_[0]->ads_service()->default_route_config();
2457 auto* route1 = route_config.mutable_virtual_hosts(0)->mutable_routes(0);
2458 route1->mutable_match()->set_prefix("/grpc.testing.EchoTest1Service/Echo1");
2459 SetRouteConfiguration(0, route_config);
2460 SetNextResolution({});
2461 SetNextResolutionForLbChannelAllBalancers();
2462 CheckRpcSendFailure();
2463 const auto& response_state = RouteConfigurationResponseState(0);
2464 EXPECT_EQ(response_state.state, AdsServiceImpl::ResponseState::NACKED);
2465 EXPECT_EQ(response_state.error_message, "Prefix does not end with a /");
2466 gpr_unsetenv("GRPC_XDS_EXPERIMENTAL_ROUTING");
2467 }
2468
2469 // Tests that LDS client should send a NACK if route match has a prefix
2470 // string "//".
TEST_P(LdsRdsTest,RouteMatchHasInvalidPrefixNoContent)2471 TEST_P(LdsRdsTest, RouteMatchHasInvalidPrefixNoContent) {
2472 gpr_setenv("GRPC_XDS_EXPERIMENTAL_ROUTING", "true");
2473 RouteConfiguration route_config =
2474 balancers_[0]->ads_service()->default_route_config();
2475 auto* route1 = route_config.mutable_virtual_hosts(0)->mutable_routes(0);
2476 route1->mutable_match()->set_prefix("//");
2477 SetRouteConfiguration(0, route_config);
2478 SetNextResolution({});
2479 SetNextResolutionForLbChannelAllBalancers();
2480 CheckRpcSendFailure();
2481 const auto& response_state = RouteConfigurationResponseState(0);
2482 EXPECT_EQ(response_state.state, AdsServiceImpl::ResponseState::NACKED);
2483 EXPECT_EQ(response_state.error_message, "Prefix contains empty service name");
2484 gpr_unsetenv("GRPC_XDS_EXPERIMENTAL_ROUTING");
2485 }
2486
2487 // Tests that LDS client should send a NACK if route match has path
2488 // but it's empty.
TEST_P(LdsRdsTest,RouteMatchHasInvalidPathEmptyPath)2489 TEST_P(LdsRdsTest, RouteMatchHasInvalidPathEmptyPath) {
2490 gpr_setenv("GRPC_XDS_EXPERIMENTAL_ROUTING", "true");
2491 RouteConfiguration route_config =
2492 balancers_[0]->ads_service()->default_route_config();
2493 auto* route1 = route_config.mutable_virtual_hosts(0)->mutable_routes(0);
2494 auto* default_route = route_config.mutable_virtual_hosts(0)->add_routes();
2495 default_route->mutable_match()->set_prefix("");
2496 default_route->mutable_route()->set_cluster(kDefaultResourceName);
2497 route1->mutable_match()->set_path("");
2498 SetRouteConfiguration(0, route_config);
2499 SetNextResolution({});
2500 SetNextResolutionForLbChannelAllBalancers();
2501 CheckRpcSendFailure();
2502 const auto& response_state = RouteConfigurationResponseState(0);
2503 EXPECT_EQ(response_state.state, AdsServiceImpl::ResponseState::NACKED);
2504 EXPECT_EQ(response_state.error_message, "Path if set cannot be empty");
2505 gpr_unsetenv("GRPC_XDS_EXPERIMENTAL_ROUTING");
2506 }
2507
2508 // Tests that LDS client should send a NACK if route match has path
2509 // string does not start with "/".
TEST_P(LdsRdsTest,RouteMatchHasInvalidPathNoLeadingSlash)2510 TEST_P(LdsRdsTest, RouteMatchHasInvalidPathNoLeadingSlash) {
2511 gpr_setenv("GRPC_XDS_EXPERIMENTAL_ROUTING", "true");
2512 RouteConfiguration route_config =
2513 balancers_[0]->ads_service()->default_route_config();
2514 auto* route1 = route_config.mutable_virtual_hosts(0)->mutable_routes(0);
2515 auto* default_route = route_config.mutable_virtual_hosts(0)->add_routes();
2516 default_route->mutable_match()->set_prefix("");
2517 default_route->mutable_route()->set_cluster(kDefaultResourceName);
2518 route1->mutable_match()->set_path("grpc.testing.EchoTest1Service/Echo1");
2519 SetRouteConfiguration(0, route_config);
2520 SetNextResolution({});
2521 SetNextResolutionForLbChannelAllBalancers();
2522 CheckRpcSendFailure();
2523 const auto& response_state = RouteConfigurationResponseState(0);
2524 EXPECT_EQ(response_state.state, AdsServiceImpl::ResponseState::NACKED);
2525 EXPECT_EQ(response_state.error_message, "Path does not start with a /");
2526 gpr_unsetenv("GRPC_XDS_EXPERIMENTAL_ROUTING");
2527 }
2528
2529 // Tests that LDS client should send a NACK if route match has path
2530 // string that ends with "/".
TEST_P(LdsRdsTest,RouteMatchHasInvalidPathEndsWithSlash)2531 TEST_P(LdsRdsTest, RouteMatchHasInvalidPathEndsWithSlash) {
2532 gpr_setenv("GRPC_XDS_EXPERIMENTAL_ROUTING", "true");
2533 RouteConfiguration route_config =
2534 balancers_[0]->ads_service()->default_route_config();
2535 auto* route1 = route_config.mutable_virtual_hosts(0)->mutable_routes(0);
2536 auto* default_route = route_config.mutable_virtual_hosts(0)->add_routes();
2537 default_route->mutable_match()->set_prefix("");
2538 default_route->mutable_route()->set_cluster(kDefaultResourceName);
2539 route1->mutable_match()->set_path("/grpc.testing.EchoTest1Service/Echo1/");
2540 SetRouteConfiguration(0, route_config);
2541 SetNextResolution({});
2542 SetNextResolutionForLbChannelAllBalancers();
2543 CheckRpcSendFailure();
2544 const auto& response_state = RouteConfigurationResponseState(0);
2545 EXPECT_EQ(response_state.state, AdsServiceImpl::ResponseState::NACKED);
2546 EXPECT_EQ(response_state.error_message,
2547 "Path not in the required format of /service/method");
2548 gpr_unsetenv("GRPC_XDS_EXPERIMENTAL_ROUTING");
2549 }
2550
2551 // Tests that LDS client should send a NACK if route match has path
2552 // string that misses "/" between service and method.
TEST_P(LdsRdsTest,RouteMatchHasInvalidPathMissingMiddleSlash)2553 TEST_P(LdsRdsTest, RouteMatchHasInvalidPathMissingMiddleSlash) {
2554 gpr_setenv("GRPC_XDS_EXPERIMENTAL_ROUTING", "true");
2555 RouteConfiguration route_config =
2556 balancers_[0]->ads_service()->default_route_config();
2557 auto* route1 = route_config.mutable_virtual_hosts(0)->mutable_routes(0);
2558 auto* default_route = route_config.mutable_virtual_hosts(0)->add_routes();
2559 default_route->mutable_match()->set_prefix("");
2560 default_route->mutable_route()->set_cluster(kDefaultResourceName);
2561 route1->mutable_match()->set_path("/grpc.testing.EchoTest1Service.Echo1");
2562 SetRouteConfiguration(0, route_config);
2563 SetNextResolution({});
2564 SetNextResolutionForLbChannelAllBalancers();
2565 CheckRpcSendFailure();
2566 const auto& response_state = RouteConfigurationResponseState(0);
2567 EXPECT_EQ(response_state.state, AdsServiceImpl::ResponseState::NACKED);
2568 EXPECT_EQ(response_state.error_message,
2569 "Path not in the required format of /service/method");
2570 gpr_unsetenv("GRPC_XDS_EXPERIMENTAL_ROUTING");
2571 }
2572
2573 // Tests that LDS client should send a NACK if route match has path
2574 // string that is missing service.
TEST_P(LdsRdsTest,RouteMatchHasInvalidPathMissingService)2575 TEST_P(LdsRdsTest, RouteMatchHasInvalidPathMissingService) {
2576 gpr_setenv("GRPC_XDS_EXPERIMENTAL_ROUTING", "true");
2577 RouteConfiguration route_config =
2578 balancers_[0]->ads_service()->default_route_config();
2579 auto* route1 = route_config.mutable_virtual_hosts(0)->mutable_routes(0);
2580 auto* default_route = route_config.mutable_virtual_hosts(0)->add_routes();
2581 default_route->mutable_match()->set_prefix("");
2582 default_route->mutable_route()->set_cluster(kDefaultResourceName);
2583 route1->mutable_match()->set_path("//Echo1");
2584 SetRouteConfiguration(0, route_config);
2585 SetNextResolution({});
2586 SetNextResolutionForLbChannelAllBalancers();
2587 CheckRpcSendFailure();
2588 const auto& response_state = RouteConfigurationResponseState(0);
2589 EXPECT_EQ(response_state.state, AdsServiceImpl::ResponseState::NACKED);
2590 EXPECT_EQ(response_state.error_message, "Path contains empty service name");
2591 gpr_unsetenv("GRPC_XDS_EXPERIMENTAL_ROUTING");
2592 }
2593
2594 // Tests that LDS client should send a NACK if route match has path
2595 // string that is missing method.
TEST_P(LdsRdsTest,RouteMatchHasInvalidPathMissingMethod)2596 TEST_P(LdsRdsTest, RouteMatchHasInvalidPathMissingMethod) {
2597 gpr_setenv("GRPC_XDS_EXPERIMENTAL_ROUTING", "true");
2598 RouteConfiguration route_config =
2599 balancers_[0]->ads_service()->default_route_config();
2600 auto* route1 = route_config.mutable_virtual_hosts(0)->mutable_routes(0);
2601 auto* default_route = route_config.mutable_virtual_hosts(0)->add_routes();
2602 default_route->mutable_match()->set_prefix("");
2603 default_route->mutable_route()->set_cluster(kDefaultResourceName);
2604 route1->mutable_match()->set_path("/grpc.testing.EchoTest1Service/");
2605 SetRouteConfiguration(0, route_config);
2606 SetNextResolution({});
2607 SetNextResolutionForLbChannelAllBalancers();
2608 CheckRpcSendFailure();
2609 const auto& response_state = RouteConfigurationResponseState(0);
2610 EXPECT_EQ(response_state.state, AdsServiceImpl::ResponseState::NACKED);
2611 EXPECT_EQ(response_state.error_message, "Path contains empty method name");
2612 gpr_unsetenv("GRPC_XDS_EXPERIMENTAL_ROUTING");
2613 }
2614
2615 // Tests that LDS client should send a NACK if route has an action other than
2616 // RouteAction in the LDS response.
TEST_P(LdsRdsTest,RouteHasNoRouteAction)2617 TEST_P(LdsRdsTest, RouteHasNoRouteAction) {
2618 RouteConfiguration route_config =
2619 balancers_[0]->ads_service()->default_route_config();
2620 route_config.mutable_virtual_hosts(0)->mutable_routes(0)->mutable_redirect();
2621 SetRouteConfiguration(0, route_config);
2622 SetNextResolution({});
2623 SetNextResolutionForLbChannelAllBalancers();
2624 CheckRpcSendFailure();
2625 const auto& response_state = RouteConfigurationResponseState(0);
2626 EXPECT_EQ(response_state.state, AdsServiceImpl::ResponseState::NACKED);
2627 EXPECT_EQ(response_state.error_message, "No RouteAction found in route.");
2628 }
2629
2630 // Tests that LDS client should send a NACK if route has a
2631 // cluster_specifier other than cluster or weighted_clusters in the LDS
2632 // response.
TEST_P(LdsRdsTest,RouteActionUnsupportedClusterSpecifier)2633 TEST_P(LdsRdsTest, RouteActionUnsupportedClusterSpecifier) {
2634 RouteConfiguration route_config =
2635 balancers_[0]->ads_service()->default_route_config();
2636 route_config.mutable_virtual_hosts(0)
2637 ->mutable_routes(0)
2638 ->mutable_route()
2639 ->mutable_cluster_header();
2640 SetRouteConfiguration(0, route_config);
2641 SetNextResolution({});
2642 SetNextResolutionForLbChannelAllBalancers();
2643 CheckRpcSendFailure();
2644 const auto& response_state = RouteConfigurationResponseState(0);
2645 EXPECT_EQ(response_state.state, AdsServiceImpl::ResponseState::NACKED);
2646 EXPECT_EQ(response_state.error_message,
2647 "No cluster or weighted_clusters found in RouteAction.");
2648 }
2649
TEST_P(LdsRdsTest,RouteActionClusterHasEmptyClusterName)2650 TEST_P(LdsRdsTest, RouteActionClusterHasEmptyClusterName) {
2651 gpr_setenv("GRPC_XDS_EXPERIMENTAL_ROUTING", "true");
2652 RouteConfiguration route_config =
2653 balancers_[0]->ads_service()->default_route_config();
2654 auto* route1 = route_config.mutable_virtual_hosts(0)->mutable_routes(0);
2655 route1->mutable_match()->set_prefix("/grpc.testing.EchoTest1Service/");
2656 route1->mutable_route()->set_cluster("");
2657 auto* default_route = route_config.mutable_virtual_hosts(0)->add_routes();
2658 default_route->mutable_match()->set_prefix("");
2659 default_route->mutable_route()->set_cluster(kDefaultResourceName);
2660 SetRouteConfiguration(0, route_config);
2661 SetNextResolution({});
2662 SetNextResolutionForLbChannelAllBalancers();
2663 CheckRpcSendFailure();
2664 const auto& response_state = RouteConfigurationResponseState(0);
2665 EXPECT_EQ(response_state.state, AdsServiceImpl::ResponseState::NACKED);
2666 EXPECT_EQ(response_state.error_message,
2667 "RouteAction cluster contains empty cluster name.");
2668 gpr_unsetenv("GRPC_XDS_EXPERIMENTAL_ROUTING");
2669 }
2670
TEST_P(LdsRdsTest,RouteActionWeightedTargetHasIncorrectTotalWeightSet)2671 TEST_P(LdsRdsTest, RouteActionWeightedTargetHasIncorrectTotalWeightSet) {
2672 gpr_setenv("GRPC_XDS_EXPERIMENTAL_ROUTING", "true");
2673 const size_t kWeight75 = 75;
2674 const char* kNewCluster1Name = "new_cluster_1";
2675 RouteConfiguration route_config =
2676 balancers_[0]->ads_service()->default_route_config();
2677 auto* route1 = route_config.mutable_virtual_hosts(0)->mutable_routes(0);
2678 route1->mutable_match()->set_prefix("/grpc.testing.EchoTest1Service/");
2679 auto* weighted_cluster1 =
2680 route1->mutable_route()->mutable_weighted_clusters()->add_clusters();
2681 weighted_cluster1->set_name(kNewCluster1Name);
2682 weighted_cluster1->mutable_weight()->set_value(kWeight75);
2683 route1->mutable_route()
2684 ->mutable_weighted_clusters()
2685 ->mutable_total_weight()
2686 ->set_value(kWeight75 + 1);
2687 auto* default_route = route_config.mutable_virtual_hosts(0)->add_routes();
2688 default_route->mutable_match()->set_prefix("");
2689 default_route->mutable_route()->set_cluster(kDefaultResourceName);
2690 SetRouteConfiguration(0, route_config);
2691 SetNextResolution({});
2692 SetNextResolutionForLbChannelAllBalancers();
2693 CheckRpcSendFailure();
2694 const auto& response_state = RouteConfigurationResponseState(0);
2695 EXPECT_EQ(response_state.state, AdsServiceImpl::ResponseState::NACKED);
2696 EXPECT_EQ(response_state.error_message,
2697 "RouteAction weighted_cluster has incorrect total weight");
2698 gpr_unsetenv("GRPC_XDS_EXPERIMENTAL_ROUTING");
2699 }
2700
TEST_P(LdsRdsTest,RouteActionWeightedTargetClusterHasEmptyClusterName)2701 TEST_P(LdsRdsTest, RouteActionWeightedTargetClusterHasEmptyClusterName) {
2702 gpr_setenv("GRPC_XDS_EXPERIMENTAL_ROUTING", "true");
2703 const size_t kWeight75 = 75;
2704 RouteConfiguration route_config =
2705 balancers_[0]->ads_service()->default_route_config();
2706 auto* route1 = route_config.mutable_virtual_hosts(0)->mutable_routes(0);
2707 route1->mutable_match()->set_prefix("/grpc.testing.EchoTest1Service/");
2708 auto* weighted_cluster1 =
2709 route1->mutable_route()->mutable_weighted_clusters()->add_clusters();
2710 weighted_cluster1->set_name("");
2711 weighted_cluster1->mutable_weight()->set_value(kWeight75);
2712 route1->mutable_route()
2713 ->mutable_weighted_clusters()
2714 ->mutable_total_weight()
2715 ->set_value(kWeight75);
2716 auto* default_route = route_config.mutable_virtual_hosts(0)->add_routes();
2717 default_route->mutable_match()->set_prefix("");
2718 default_route->mutable_route()->set_cluster(kDefaultResourceName);
2719 SetRouteConfiguration(0, route_config);
2720 SetNextResolution({});
2721 SetNextResolutionForLbChannelAllBalancers();
2722 CheckRpcSendFailure();
2723 const auto& response_state = RouteConfigurationResponseState(0);
2724 EXPECT_EQ(response_state.state, AdsServiceImpl::ResponseState::NACKED);
2725 EXPECT_EQ(
2726 response_state.error_message,
2727 "RouteAction weighted_cluster cluster contains empty cluster name.");
2728 gpr_unsetenv("GRPC_XDS_EXPERIMENTAL_ROUTING");
2729 }
2730
TEST_P(LdsRdsTest,RouteActionWeightedTargetClusterHasNoWeight)2731 TEST_P(LdsRdsTest, RouteActionWeightedTargetClusterHasNoWeight) {
2732 gpr_setenv("GRPC_XDS_EXPERIMENTAL_ROUTING", "true");
2733 const size_t kWeight75 = 75;
2734 const char* kNewCluster1Name = "new_cluster_1";
2735 RouteConfiguration route_config =
2736 balancers_[0]->ads_service()->default_route_config();
2737 auto* route1 = route_config.mutable_virtual_hosts(0)->mutable_routes(0);
2738 route1->mutable_match()->set_prefix("/grpc.testing.EchoTest1Service/");
2739 auto* weighted_cluster1 =
2740 route1->mutable_route()->mutable_weighted_clusters()->add_clusters();
2741 weighted_cluster1->set_name(kNewCluster1Name);
2742 route1->mutable_route()
2743 ->mutable_weighted_clusters()
2744 ->mutable_total_weight()
2745 ->set_value(kWeight75);
2746 auto* default_route = route_config.mutable_virtual_hosts(0)->add_routes();
2747 default_route->mutable_match()->set_prefix("");
2748 default_route->mutable_route()->set_cluster(kDefaultResourceName);
2749 SetRouteConfiguration(0, route_config);
2750 SetNextResolution({});
2751 SetNextResolutionForLbChannelAllBalancers();
2752 CheckRpcSendFailure();
2753 const auto& response_state = RouteConfigurationResponseState(0);
2754 EXPECT_EQ(response_state.state, AdsServiceImpl::ResponseState::NACKED);
2755 EXPECT_EQ(response_state.error_message,
2756 "RouteAction weighted_cluster cluster missing weight");
2757 gpr_unsetenv("GRPC_XDS_EXPERIMENTAL_ROUTING");
2758 }
2759
2760 // Tests that LDS client times out when no response received.
TEST_P(LdsRdsTest,Timeout)2761 TEST_P(LdsRdsTest, Timeout) {
2762 ResetStub(0, "", 500);
2763 if (GetParam().enable_rds_testing()) {
2764 balancers_[0]->ads_service()->SetResourceIgnore(kRdsTypeUrl);
2765 } else {
2766 balancers_[0]->ads_service()->SetResourceIgnore(kLdsTypeUrl);
2767 }
2768 SetNextResolution({});
2769 SetNextResolutionForLbChannelAllBalancers();
2770 CheckRpcSendFailure();
2771 }
2772
2773 // Tests that LDS client should choose the default route (with no matching
2774 // specified) after unable to find a match with previous routes.
TEST_P(LdsRdsTest,XdsRoutingPathMatching)2775 TEST_P(LdsRdsTest, XdsRoutingPathMatching) {
2776 gpr_setenv("GRPC_XDS_EXPERIMENTAL_ROUTING", "true");
2777 const char* kNewCluster1Name = "new_cluster_1";
2778 const char* kNewCluster2Name = "new_cluster_2";
2779 const size_t kNumEcho1Rpcs = 10;
2780 const size_t kNumEcho2Rpcs = 20;
2781 const size_t kNumEchoRpcs = 30;
2782 SetNextResolution({});
2783 SetNextResolutionForLbChannelAllBalancers();
2784 // Populate new EDS resources.
2785 AdsServiceImpl::EdsResourceArgs args({
2786 {"locality0", GetBackendPorts(0, 2)},
2787 });
2788 AdsServiceImpl::EdsResourceArgs args1({
2789 {"locality0", GetBackendPorts(2, 3)},
2790 });
2791 AdsServiceImpl::EdsResourceArgs args2({
2792 {"locality0", GetBackendPorts(3, 4)},
2793 });
2794 balancers_[0]->ads_service()->SetEdsResource(
2795 AdsServiceImpl::BuildEdsResource(args));
2796 balancers_[0]->ads_service()->SetEdsResource(
2797 AdsServiceImpl::BuildEdsResource(args1, kNewCluster1Name));
2798 balancers_[0]->ads_service()->SetEdsResource(
2799 AdsServiceImpl::BuildEdsResource(args2, kNewCluster2Name));
2800 // Populate new CDS resources.
2801 Cluster new_cluster1 = balancers_[0]->ads_service()->default_cluster();
2802 new_cluster1.set_name(kNewCluster1Name);
2803 balancers_[0]->ads_service()->SetCdsResource(new_cluster1);
2804 Cluster new_cluster2 = balancers_[0]->ads_service()->default_cluster();
2805 new_cluster2.set_name(kNewCluster2Name);
2806 balancers_[0]->ads_service()->SetCdsResource(new_cluster2);
2807 // Populating Route Configurations for LDS.
2808 RouteConfiguration new_route_config =
2809 balancers_[0]->ads_service()->default_route_config();
2810 auto* route1 = new_route_config.mutable_virtual_hosts(0)->mutable_routes(0);
2811 route1->mutable_match()->set_path("/grpc.testing.EchoTest1Service/Echo1");
2812 route1->mutable_route()->set_cluster(kNewCluster1Name);
2813 auto* route2 = new_route_config.mutable_virtual_hosts(0)->add_routes();
2814 route2->mutable_match()->set_path("/grpc.testing.EchoTest2Service/Echo2");
2815 route2->mutable_route()->set_cluster(kNewCluster2Name);
2816 auto* route3 = new_route_config.mutable_virtual_hosts(0)->add_routes();
2817 route3->mutable_match()->set_path("/grpc.testing.EchoTest3Service/Echo3");
2818 route3->mutable_route()->set_cluster(kDefaultResourceName);
2819 auto* default_route = new_route_config.mutable_virtual_hosts(0)->add_routes();
2820 default_route->mutable_match()->set_prefix("");
2821 default_route->mutable_route()->set_cluster(kDefaultResourceName);
2822 SetRouteConfiguration(0, new_route_config);
2823 WaitForAllBackends(0, 2);
2824 CheckRpcSendOk(kNumEchoRpcs, RpcOptions().set_wait_for_ready(true));
2825 CheckRpcSendOk(kNumEcho1Rpcs, RpcOptions()
2826 .set_rpc_service(SERVICE_ECHO1)
2827 .set_rpc_method(METHOD_ECHO1)
2828 .set_wait_for_ready(true));
2829 CheckRpcSendOk(kNumEcho2Rpcs, RpcOptions()
2830 .set_rpc_service(SERVICE_ECHO2)
2831 .set_rpc_method(METHOD_ECHO2)
2832 .set_wait_for_ready(true));
2833 // Make sure RPCs all go to the correct backend.
2834 for (size_t i = 0; i < 2; ++i) {
2835 EXPECT_EQ(kNumEchoRpcs / 2,
2836 backends_[i]->backend_service()->request_count());
2837 EXPECT_EQ(0, backends_[i]->backend_service1()->request_count());
2838 EXPECT_EQ(0, backends_[i]->backend_service2()->request_count());
2839 }
2840 EXPECT_EQ(0, backends_[2]->backend_service()->request_count());
2841 EXPECT_EQ(kNumEcho1Rpcs, backends_[2]->backend_service1()->request_count());
2842 EXPECT_EQ(0, backends_[2]->backend_service2()->request_count());
2843 EXPECT_EQ(0, backends_[3]->backend_service()->request_count());
2844 EXPECT_EQ(0, backends_[3]->backend_service1()->request_count());
2845 EXPECT_EQ(kNumEcho2Rpcs, backends_[3]->backend_service2()->request_count());
2846 gpr_unsetenv("GRPC_XDS_EXPERIMENTAL_ROUTING");
2847 }
2848
TEST_P(LdsRdsTest,XdsRoutingPrefixMatching)2849 TEST_P(LdsRdsTest, XdsRoutingPrefixMatching) {
2850 gpr_setenv("GRPC_XDS_EXPERIMENTAL_ROUTING", "true");
2851 const char* kNewCluster1Name = "new_cluster_1";
2852 const char* kNewCluster2Name = "new_cluster_2";
2853 const size_t kNumEcho1Rpcs = 10;
2854 const size_t kNumEcho2Rpcs = 20;
2855 const size_t kNumEchoRpcs = 30;
2856 SetNextResolution({});
2857 SetNextResolutionForLbChannelAllBalancers();
2858 // Populate new EDS resources.
2859 AdsServiceImpl::EdsResourceArgs args({
2860 {"locality0", GetBackendPorts(0, 2)},
2861 });
2862 AdsServiceImpl::EdsResourceArgs args1({
2863 {"locality0", GetBackendPorts(2, 3)},
2864 });
2865 AdsServiceImpl::EdsResourceArgs args2({
2866 {"locality0", GetBackendPorts(3, 4)},
2867 });
2868 balancers_[0]->ads_service()->SetEdsResource(
2869 AdsServiceImpl::BuildEdsResource(args));
2870 balancers_[0]->ads_service()->SetEdsResource(
2871 AdsServiceImpl::BuildEdsResource(args1, kNewCluster1Name));
2872 balancers_[0]->ads_service()->SetEdsResource(
2873 AdsServiceImpl::BuildEdsResource(args2, kNewCluster2Name));
2874 // Populate new CDS resources.
2875 Cluster new_cluster1 = balancers_[0]->ads_service()->default_cluster();
2876 new_cluster1.set_name(kNewCluster1Name);
2877 balancers_[0]->ads_service()->SetCdsResource(new_cluster1);
2878 Cluster new_cluster2 = balancers_[0]->ads_service()->default_cluster();
2879 new_cluster2.set_name(kNewCluster2Name);
2880 balancers_[0]->ads_service()->SetCdsResource(new_cluster2);
2881 // Populating Route Configurations for LDS.
2882 RouteConfiguration new_route_config =
2883 balancers_[0]->ads_service()->default_route_config();
2884 auto* route1 = new_route_config.mutable_virtual_hosts(0)->mutable_routes(0);
2885 route1->mutable_match()->set_prefix("/grpc.testing.EchoTest1Service/");
2886 route1->mutable_route()->set_cluster(kNewCluster1Name);
2887 auto* route2 = new_route_config.mutable_virtual_hosts(0)->add_routes();
2888 route2->mutable_match()->set_prefix("/grpc.testing.EchoTest2Service/");
2889 route2->mutable_route()->set_cluster(kNewCluster2Name);
2890 auto* default_route = new_route_config.mutable_virtual_hosts(0)->add_routes();
2891 default_route->mutable_match()->set_prefix("");
2892 default_route->mutable_route()->set_cluster(kDefaultResourceName);
2893 SetRouteConfiguration(0, new_route_config);
2894 WaitForAllBackends(0, 2);
2895 CheckRpcSendOk(kNumEchoRpcs, RpcOptions().set_wait_for_ready(true));
2896 CheckRpcSendOk(
2897 kNumEcho1Rpcs,
2898 RpcOptions().set_rpc_service(SERVICE_ECHO1).set_wait_for_ready(true));
2899 CheckRpcSendOk(
2900 kNumEcho2Rpcs,
2901 RpcOptions().set_rpc_service(SERVICE_ECHO2).set_wait_for_ready(true));
2902 // Make sure RPCs all go to the correct backend.
2903 for (size_t i = 0; i < 2; ++i) {
2904 EXPECT_EQ(kNumEchoRpcs / 2,
2905 backends_[i]->backend_service()->request_count());
2906 EXPECT_EQ(0, backends_[i]->backend_service1()->request_count());
2907 EXPECT_EQ(0, backends_[i]->backend_service2()->request_count());
2908 }
2909 EXPECT_EQ(0, backends_[2]->backend_service()->request_count());
2910 EXPECT_EQ(kNumEcho1Rpcs, backends_[2]->backend_service1()->request_count());
2911 EXPECT_EQ(0, backends_[2]->backend_service2()->request_count());
2912 EXPECT_EQ(0, backends_[3]->backend_service()->request_count());
2913 EXPECT_EQ(0, backends_[3]->backend_service1()->request_count());
2914 EXPECT_EQ(kNumEcho2Rpcs, backends_[3]->backend_service2()->request_count());
2915 gpr_unsetenv("GRPC_XDS_EXPERIMENTAL_ROUTING");
2916 }
2917
TEST_P(LdsRdsTest,XdsRoutingWeightedCluster)2918 TEST_P(LdsRdsTest, XdsRoutingWeightedCluster) {
2919 gpr_setenv("GRPC_XDS_EXPERIMENTAL_ROUTING", "true");
2920 const char* kNewCluster1Name = "new_cluster_1";
2921 const char* kNewCluster2Name = "new_cluster_2";
2922 const size_t kNumEcho1Rpcs = 1000;
2923 const size_t kNumEchoRpcs = 10;
2924 const size_t kWeight75 = 75;
2925 const size_t kWeight25 = 25;
2926 SetNextResolution({});
2927 SetNextResolutionForLbChannelAllBalancers();
2928 // Populate new EDS resources.
2929 AdsServiceImpl::EdsResourceArgs args({
2930 {"locality0", GetBackendPorts(0, 1)},
2931 });
2932 AdsServiceImpl::EdsResourceArgs args1({
2933 {"locality0", GetBackendPorts(1, 2)},
2934 });
2935 AdsServiceImpl::EdsResourceArgs args2({
2936 {"locality0", GetBackendPorts(2, 3)},
2937 });
2938 balancers_[0]->ads_service()->SetEdsResource(
2939 AdsServiceImpl::BuildEdsResource(args));
2940 balancers_[0]->ads_service()->SetEdsResource(
2941 AdsServiceImpl::BuildEdsResource(args1, kNewCluster1Name));
2942 balancers_[0]->ads_service()->SetEdsResource(
2943 AdsServiceImpl::BuildEdsResource(args2, kNewCluster2Name));
2944 // Populate new CDS resources.
2945 Cluster new_cluster1 = balancers_[0]->ads_service()->default_cluster();
2946 new_cluster1.set_name(kNewCluster1Name);
2947 balancers_[0]->ads_service()->SetCdsResource(new_cluster1);
2948 Cluster new_cluster2 = balancers_[0]->ads_service()->default_cluster();
2949 new_cluster2.set_name(kNewCluster2Name);
2950 balancers_[0]->ads_service()->SetCdsResource(new_cluster2);
2951 // Populating Route Configurations for LDS.
2952 RouteConfiguration new_route_config =
2953 balancers_[0]->ads_service()->default_route_config();
2954 auto* route1 = new_route_config.mutable_virtual_hosts(0)->mutable_routes(0);
2955 route1->mutable_match()->set_prefix("/grpc.testing.EchoTest1Service/");
2956 auto* weighted_cluster1 =
2957 route1->mutable_route()->mutable_weighted_clusters()->add_clusters();
2958 weighted_cluster1->set_name(kNewCluster1Name);
2959 weighted_cluster1->mutable_weight()->set_value(kWeight75);
2960 auto* weighted_cluster2 =
2961 route1->mutable_route()->mutable_weighted_clusters()->add_clusters();
2962 weighted_cluster2->set_name(kNewCluster2Name);
2963 weighted_cluster2->mutable_weight()->set_value(kWeight25);
2964 route1->mutable_route()
2965 ->mutable_weighted_clusters()
2966 ->mutable_total_weight()
2967 ->set_value(kWeight75 + kWeight25);
2968 auto* default_route = new_route_config.mutable_virtual_hosts(0)->add_routes();
2969 default_route->mutable_match()->set_prefix("");
2970 default_route->mutable_route()->set_cluster(kDefaultResourceName);
2971 SetRouteConfiguration(0, new_route_config);
2972 WaitForAllBackends(0, 1);
2973 WaitForAllBackends(1, 3, true, RpcOptions().set_rpc_service(SERVICE_ECHO1));
2974 CheckRpcSendOk(kNumEchoRpcs);
2975 CheckRpcSendOk(kNumEcho1Rpcs, RpcOptions().set_rpc_service(SERVICE_ECHO1));
2976 // Make sure RPCs all go to the correct backend.
2977 EXPECT_EQ(kNumEchoRpcs, backends_[0]->backend_service()->request_count());
2978 EXPECT_EQ(0, backends_[0]->backend_service1()->request_count());
2979 EXPECT_EQ(0, backends_[1]->backend_service()->request_count());
2980 const int weight_75_request_count =
2981 backends_[1]->backend_service1()->request_count();
2982 EXPECT_EQ(0, backends_[2]->backend_service()->request_count());
2983 const int weight_25_request_count =
2984 backends_[2]->backend_service1()->request_count();
2985 const double kErrorTolerance = 0.2;
2986 EXPECT_THAT(weight_75_request_count,
2987 ::testing::AllOf(::testing::Ge(kNumEcho1Rpcs * kWeight75 / 100 *
2988 (1 - kErrorTolerance)),
2989 ::testing::Le(kNumEcho1Rpcs * kWeight75 / 100 *
2990 (1 + kErrorTolerance))));
2991 // TODO: (@donnadionne) Reduce tolerance: increased the tolerance to keep the
2992 // test from flaking while debugging potential root cause.
2993 const double kErrorToleranceSmallLoad = 0.3;
2994 gpr_log(GPR_INFO, "target_75 received %d rpcs and target_25 received %d rpcs",
2995 weight_75_request_count, weight_25_request_count);
2996 EXPECT_THAT(weight_25_request_count,
2997 ::testing::AllOf(::testing::Ge(kNumEcho1Rpcs * kWeight25 / 100 *
2998 (1 - kErrorToleranceSmallLoad)),
2999 ::testing::Le(kNumEcho1Rpcs * kWeight25 / 100 *
3000 (1 + kErrorToleranceSmallLoad))));
3001 gpr_unsetenv("GRPC_XDS_EXPERIMENTAL_ROUTING");
3002 }
3003
TEST_P(LdsRdsTest,RouteActionWeightedTargetDefaultRoute)3004 TEST_P(LdsRdsTest, RouteActionWeightedTargetDefaultRoute) {
3005 const char* kNewCluster1Name = "new_cluster_1";
3006 const char* kNewCluster2Name = "new_cluster_2";
3007 const size_t kNumEchoRpcs = 1000;
3008 const size_t kWeight75 = 75;
3009 const size_t kWeight25 = 25;
3010 SetNextResolution({});
3011 SetNextResolutionForLbChannelAllBalancers();
3012 // Populate new EDS resources.
3013 AdsServiceImpl::EdsResourceArgs args({
3014 {"locality0", GetBackendPorts(0, 1)},
3015 });
3016 AdsServiceImpl::EdsResourceArgs args1({
3017 {"locality0", GetBackendPorts(1, 2)},
3018 });
3019 AdsServiceImpl::EdsResourceArgs args2({
3020 {"locality0", GetBackendPorts(2, 3)},
3021 });
3022 balancers_[0]->ads_service()->SetEdsResource(
3023 AdsServiceImpl::BuildEdsResource(args));
3024 balancers_[0]->ads_service()->SetEdsResource(
3025 AdsServiceImpl::BuildEdsResource(args1, kNewCluster1Name));
3026 balancers_[0]->ads_service()->SetEdsResource(
3027 AdsServiceImpl::BuildEdsResource(args2, kNewCluster2Name));
3028 // Populate new CDS resources.
3029 Cluster new_cluster1 = balancers_[0]->ads_service()->default_cluster();
3030 new_cluster1.set_name(kNewCluster1Name);
3031 balancers_[0]->ads_service()->SetCdsResource(new_cluster1);
3032 Cluster new_cluster2 = balancers_[0]->ads_service()->default_cluster();
3033 new_cluster2.set_name(kNewCluster2Name);
3034 balancers_[0]->ads_service()->SetCdsResource(new_cluster2);
3035 // Populating Route Configurations for LDS.
3036 RouteConfiguration new_route_config =
3037 balancers_[0]->ads_service()->default_route_config();
3038 auto* route1 = new_route_config.mutable_virtual_hosts(0)->mutable_routes(0);
3039 route1->mutable_match()->set_prefix("");
3040 auto* weighted_cluster1 =
3041 route1->mutable_route()->mutable_weighted_clusters()->add_clusters();
3042 weighted_cluster1->set_name(kNewCluster1Name);
3043 weighted_cluster1->mutable_weight()->set_value(kWeight75);
3044 auto* weighted_cluster2 =
3045 route1->mutable_route()->mutable_weighted_clusters()->add_clusters();
3046 weighted_cluster2->set_name(kNewCluster2Name);
3047 weighted_cluster2->mutable_weight()->set_value(kWeight25);
3048 route1->mutable_route()
3049 ->mutable_weighted_clusters()
3050 ->mutable_total_weight()
3051 ->set_value(kWeight75 + kWeight25);
3052 SetRouteConfiguration(0, new_route_config);
3053 WaitForAllBackends(1, 3);
3054 CheckRpcSendOk(kNumEchoRpcs);
3055 // Make sure RPCs all go to the correct backend.
3056 EXPECT_EQ(0, backends_[0]->backend_service()->request_count());
3057 const int weight_75_request_count =
3058 backends_[1]->backend_service()->request_count();
3059 const int weight_25_request_count =
3060 backends_[2]->backend_service()->request_count();
3061 const double kErrorTolerance = 0.2;
3062 EXPECT_THAT(weight_75_request_count,
3063 ::testing::AllOf(::testing::Ge(kNumEchoRpcs * kWeight75 / 100 *
3064 (1 - kErrorTolerance)),
3065 ::testing::Le(kNumEchoRpcs * kWeight75 / 100 *
3066 (1 + kErrorTolerance))));
3067 // TODO: (@donnadionne) Reduce tolerance: increased the tolerance to keep the
3068 // test from flaking while debugging potential root cause.
3069 const double kErrorToleranceSmallLoad = 0.3;
3070 gpr_log(GPR_INFO, "target_75 received %d rpcs and target_25 received %d rpcs",
3071 weight_75_request_count, weight_25_request_count);
3072 EXPECT_THAT(weight_25_request_count,
3073 ::testing::AllOf(::testing::Ge(kNumEchoRpcs * kWeight25 / 100 *
3074 (1 - kErrorToleranceSmallLoad)),
3075 ::testing::Le(kNumEchoRpcs * kWeight25 / 100 *
3076 (1 + kErrorToleranceSmallLoad))));
3077 }
3078
TEST_P(LdsRdsTest,XdsRoutingWeightedClusterUpdateWeights)3079 TEST_P(LdsRdsTest, XdsRoutingWeightedClusterUpdateWeights) {
3080 gpr_setenv("GRPC_XDS_EXPERIMENTAL_ROUTING", "true");
3081 const char* kNewCluster1Name = "new_cluster_1";
3082 const char* kNewCluster2Name = "anew_cluster_2";
3083 const char* kNewCluster3Name = "new_cluster_3";
3084 const size_t kNumEcho1Rpcs = 1000;
3085 const size_t kNumEchoRpcs = 10;
3086 const size_t kWeight75 = 75;
3087 const size_t kWeight25 = 25;
3088 const size_t kWeight50 = 50;
3089 SetNextResolution({});
3090 SetNextResolutionForLbChannelAllBalancers();
3091 // Populate new EDS resources.
3092 AdsServiceImpl::EdsResourceArgs args({
3093 {"locality0", GetBackendPorts(0, 1)},
3094 });
3095 AdsServiceImpl::EdsResourceArgs args1({
3096 {"locality0", GetBackendPorts(1, 2)},
3097 });
3098 AdsServiceImpl::EdsResourceArgs args2({
3099 {"locality0", GetBackendPorts(2, 3)},
3100 });
3101 AdsServiceImpl::EdsResourceArgs args3({
3102 {"locality0", GetBackendPorts(3, 4)},
3103 });
3104 balancers_[0]->ads_service()->SetEdsResource(
3105 AdsServiceImpl::BuildEdsResource(args));
3106 balancers_[0]->ads_service()->SetEdsResource(
3107 AdsServiceImpl::BuildEdsResource(args1, kNewCluster1Name));
3108 balancers_[0]->ads_service()->SetEdsResource(
3109 AdsServiceImpl::BuildEdsResource(args2, kNewCluster2Name));
3110 balancers_[0]->ads_service()->SetEdsResource(
3111 AdsServiceImpl::BuildEdsResource(args3, kNewCluster3Name));
3112 // Populate new CDS resources.
3113 Cluster new_cluster1 = balancers_[0]->ads_service()->default_cluster();
3114 new_cluster1.set_name(kNewCluster1Name);
3115 balancers_[0]->ads_service()->SetCdsResource(new_cluster1);
3116 Cluster new_cluster2 = balancers_[0]->ads_service()->default_cluster();
3117 new_cluster2.set_name(kNewCluster2Name);
3118 balancers_[0]->ads_service()->SetCdsResource(new_cluster2);
3119 Cluster new_cluster3 = balancers_[0]->ads_service()->default_cluster();
3120 new_cluster3.set_name(kNewCluster3Name);
3121 balancers_[0]->ads_service()->SetCdsResource(new_cluster3);
3122 // Populating Route Configurations.
3123 RouteConfiguration new_route_config =
3124 balancers_[0]->ads_service()->default_route_config();
3125 auto* route1 = new_route_config.mutable_virtual_hosts(0)->mutable_routes(0);
3126 route1->mutable_match()->set_prefix("/grpc.testing.EchoTest1Service/");
3127 auto* weighted_cluster1 =
3128 route1->mutable_route()->mutable_weighted_clusters()->add_clusters();
3129 weighted_cluster1->set_name(kNewCluster1Name);
3130 weighted_cluster1->mutable_weight()->set_value(kWeight75);
3131 auto* weighted_cluster2 =
3132 route1->mutable_route()->mutable_weighted_clusters()->add_clusters();
3133 weighted_cluster2->set_name(kNewCluster2Name);
3134 weighted_cluster2->mutable_weight()->set_value(kWeight25);
3135 route1->mutable_route()
3136 ->mutable_weighted_clusters()
3137 ->mutable_total_weight()
3138 ->set_value(kWeight75 + kWeight25);
3139 auto* default_route = new_route_config.mutable_virtual_hosts(0)->add_routes();
3140 default_route->mutable_match()->set_prefix("");
3141 default_route->mutable_route()->set_cluster(kDefaultResourceName);
3142 SetRouteConfiguration(0, new_route_config);
3143 WaitForAllBackends(0, 1);
3144 WaitForAllBackends(1, 3, true, RpcOptions().set_rpc_service(SERVICE_ECHO1));
3145 CheckRpcSendOk(kNumEchoRpcs);
3146 CheckRpcSendOk(kNumEcho1Rpcs, RpcOptions().set_rpc_service(SERVICE_ECHO1));
3147 // Make sure RPCs all go to the correct backend.
3148 EXPECT_EQ(kNumEchoRpcs, backends_[0]->backend_service()->request_count());
3149 EXPECT_EQ(0, backends_[0]->backend_service1()->request_count());
3150 EXPECT_EQ(0, backends_[1]->backend_service()->request_count());
3151 const int weight_75_request_count =
3152 backends_[1]->backend_service1()->request_count();
3153 EXPECT_EQ(0, backends_[1]->backend_service2()->request_count());
3154 EXPECT_EQ(0, backends_[2]->backend_service()->request_count());
3155 const int weight_25_request_count =
3156 backends_[2]->backend_service1()->request_count();
3157 EXPECT_EQ(0, backends_[3]->backend_service()->request_count());
3158 EXPECT_EQ(0, backends_[3]->backend_service1()->request_count());
3159 const double kErrorTolerance = 0.2;
3160 EXPECT_THAT(weight_75_request_count,
3161 ::testing::AllOf(::testing::Ge(kNumEcho1Rpcs * kWeight75 / 100 *
3162 (1 - kErrorTolerance)),
3163 ::testing::Le(kNumEcho1Rpcs * kWeight75 / 100 *
3164 (1 + kErrorTolerance))));
3165 // TODO: (@donnadionne) Reduce tolerance: increased the tolerance to keep the
3166 // test from flaking while debugging potential root cause.
3167 const double kErrorToleranceSmallLoad = 0.3;
3168 gpr_log(GPR_INFO, "target_75 received %d rpcs and target_25 received %d rpcs",
3169 weight_75_request_count, weight_25_request_count);
3170 EXPECT_THAT(weight_25_request_count,
3171 ::testing::AllOf(::testing::Ge(kNumEcho1Rpcs * kWeight25 / 100 *
3172 (1 - kErrorToleranceSmallLoad)),
3173 ::testing::Le(kNumEcho1Rpcs * kWeight25 / 100 *
3174 (1 + kErrorToleranceSmallLoad))));
3175 // Change Route Configurations: same clusters different weights.
3176 weighted_cluster1->mutable_weight()->set_value(kWeight50);
3177 weighted_cluster2->mutable_weight()->set_value(kWeight50);
3178 // Change default route to a new cluster to help to identify when new polices
3179 // are seen by the client.
3180 default_route->mutable_route()->set_cluster(kNewCluster3Name);
3181 SetRouteConfiguration(0, new_route_config);
3182 ResetBackendCounters();
3183 WaitForAllBackends(3, 4);
3184 CheckRpcSendOk(kNumEchoRpcs);
3185 CheckRpcSendOk(kNumEcho1Rpcs, RpcOptions().set_rpc_service(SERVICE_ECHO1));
3186 // Make sure RPCs all go to the correct backend.
3187 EXPECT_EQ(0, backends_[0]->backend_service()->request_count());
3188 EXPECT_EQ(0, backends_[0]->backend_service1()->request_count());
3189 EXPECT_EQ(0, backends_[1]->backend_service()->request_count());
3190 const int weight_50_request_count_1 =
3191 backends_[1]->backend_service1()->request_count();
3192 EXPECT_EQ(0, backends_[2]->backend_service()->request_count());
3193 const int weight_50_request_count_2 =
3194 backends_[2]->backend_service1()->request_count();
3195 EXPECT_EQ(kNumEchoRpcs, backends_[3]->backend_service()->request_count());
3196 EXPECT_EQ(0, backends_[3]->backend_service1()->request_count());
3197 EXPECT_THAT(weight_50_request_count_1,
3198 ::testing::AllOf(::testing::Ge(kNumEcho1Rpcs * kWeight50 / 100 *
3199 (1 - kErrorTolerance)),
3200 ::testing::Le(kNumEcho1Rpcs * kWeight50 / 100 *
3201 (1 + kErrorTolerance))));
3202 EXPECT_THAT(weight_50_request_count_2,
3203 ::testing::AllOf(::testing::Ge(kNumEcho1Rpcs * kWeight50 / 100 *
3204 (1 - kErrorTolerance)),
3205 ::testing::Le(kNumEcho1Rpcs * kWeight50 / 100 *
3206 (1 + kErrorTolerance))));
3207 gpr_unsetenv("GRPC_XDS_EXPERIMENTAL_ROUTING");
3208 }
3209
TEST_P(LdsRdsTest,XdsRoutingWeightedClusterUpdateClusters)3210 TEST_P(LdsRdsTest, XdsRoutingWeightedClusterUpdateClusters) {
3211 gpr_setenv("GRPC_XDS_EXPERIMENTAL_ROUTING", "true");
3212 const char* kNewCluster1Name = "new_cluster_1";
3213 const char* kNewCluster2Name = "anew_cluster_2";
3214 const char* kNewCluster3Name = "new_cluster_3";
3215 const size_t kNumEcho1Rpcs = 1000;
3216 const size_t kNumEchoRpcs = 10;
3217 const size_t kWeight75 = 75;
3218 const size_t kWeight25 = 25;
3219 const size_t kWeight50 = 50;
3220 SetNextResolution({});
3221 SetNextResolutionForLbChannelAllBalancers();
3222 // Populate new EDS resources.
3223 AdsServiceImpl::EdsResourceArgs args({
3224 {"locality0", GetBackendPorts(0, 1)},
3225 });
3226 AdsServiceImpl::EdsResourceArgs args1({
3227 {"locality0", GetBackendPorts(1, 2)},
3228 });
3229 AdsServiceImpl::EdsResourceArgs args2({
3230 {"locality0", GetBackendPorts(2, 3)},
3231 });
3232 AdsServiceImpl::EdsResourceArgs args3({
3233 {"locality0", GetBackendPorts(3, 4)},
3234 });
3235 balancers_[0]->ads_service()->SetEdsResource(
3236 AdsServiceImpl::BuildEdsResource(args));
3237 balancers_[0]->ads_service()->SetEdsResource(
3238 AdsServiceImpl::BuildEdsResource(args1, kNewCluster1Name));
3239 balancers_[0]->ads_service()->SetEdsResource(
3240 AdsServiceImpl::BuildEdsResource(args2, kNewCluster2Name));
3241 balancers_[0]->ads_service()->SetEdsResource(
3242 AdsServiceImpl::BuildEdsResource(args3, kNewCluster3Name));
3243 // Populate new CDS resources.
3244 Cluster new_cluster1 = balancers_[0]->ads_service()->default_cluster();
3245 new_cluster1.set_name(kNewCluster1Name);
3246 balancers_[0]->ads_service()->SetCdsResource(new_cluster1);
3247 Cluster new_cluster2 = balancers_[0]->ads_service()->default_cluster();
3248 new_cluster2.set_name(kNewCluster2Name);
3249 balancers_[0]->ads_service()->SetCdsResource(new_cluster2);
3250 Cluster new_cluster3 = balancers_[0]->ads_service()->default_cluster();
3251 new_cluster3.set_name(kNewCluster3Name);
3252 balancers_[0]->ads_service()->SetCdsResource(new_cluster3);
3253 // Populating Route Configurations.
3254 RouteConfiguration new_route_config =
3255 balancers_[0]->ads_service()->default_route_config();
3256 auto* route1 = new_route_config.mutable_virtual_hosts(0)->mutable_routes(0);
3257 route1->mutable_match()->set_prefix("/grpc.testing.EchoTest1Service/");
3258 auto* weighted_cluster1 =
3259 route1->mutable_route()->mutable_weighted_clusters()->add_clusters();
3260 weighted_cluster1->set_name(kNewCluster1Name);
3261 weighted_cluster1->mutable_weight()->set_value(kWeight75);
3262 auto* weighted_cluster2 =
3263 route1->mutable_route()->mutable_weighted_clusters()->add_clusters();
3264 weighted_cluster2->set_name(kDefaultResourceName);
3265 weighted_cluster2->mutable_weight()->set_value(kWeight25);
3266 route1->mutable_route()
3267 ->mutable_weighted_clusters()
3268 ->mutable_total_weight()
3269 ->set_value(kWeight75 + kWeight25);
3270 auto* default_route = new_route_config.mutable_virtual_hosts(0)->add_routes();
3271 default_route->mutable_match()->set_prefix("");
3272 default_route->mutable_route()->set_cluster(kDefaultResourceName);
3273 SetRouteConfiguration(0, new_route_config);
3274 WaitForAllBackends(0, 1);
3275 WaitForAllBackends(1, 2, true, RpcOptions().set_rpc_service(SERVICE_ECHO1));
3276 CheckRpcSendOk(kNumEchoRpcs);
3277 CheckRpcSendOk(kNumEcho1Rpcs, RpcOptions().set_rpc_service(SERVICE_ECHO1));
3278 // Make sure RPCs all go to the correct backend.
3279 EXPECT_EQ(kNumEchoRpcs, backends_[0]->backend_service()->request_count());
3280 int weight_25_request_count =
3281 backends_[0]->backend_service1()->request_count();
3282 EXPECT_EQ(0, backends_[1]->backend_service()->request_count());
3283 int weight_75_request_count =
3284 backends_[1]->backend_service1()->request_count();
3285 EXPECT_EQ(0, backends_[2]->backend_service()->request_count());
3286 EXPECT_EQ(0, backends_[2]->backend_service1()->request_count());
3287 EXPECT_EQ(0, backends_[3]->backend_service()->request_count());
3288 EXPECT_EQ(0, backends_[3]->backend_service1()->request_count());
3289 const double kErrorTolerance = 0.2;
3290 EXPECT_THAT(weight_75_request_count,
3291 ::testing::AllOf(::testing::Ge(kNumEcho1Rpcs * kWeight75 / 100 *
3292 (1 - kErrorTolerance)),
3293 ::testing::Le(kNumEcho1Rpcs * kWeight75 / 100 *
3294 (1 + kErrorTolerance))));
3295 // TODO: (@donnadionne) Reduce tolerance: increased the tolerance to keep the
3296 // test from flaking while debugging potential root cause.
3297 const double kErrorToleranceSmallLoad = 0.3;
3298 gpr_log(GPR_INFO, "target_75 received %d rpcs and target_25 received %d rpcs",
3299 weight_75_request_count, weight_25_request_count);
3300 EXPECT_THAT(weight_25_request_count,
3301 ::testing::AllOf(::testing::Ge(kNumEcho1Rpcs * kWeight25 / 100 *
3302 (1 - kErrorToleranceSmallLoad)),
3303 ::testing::Le(kNumEcho1Rpcs * kWeight25 / 100 *
3304 (1 + kErrorToleranceSmallLoad))));
3305 // Change Route Configurations: new set of clusters with different weights.
3306 weighted_cluster1->mutable_weight()->set_value(kWeight50);
3307 weighted_cluster2->set_name(kNewCluster2Name);
3308 weighted_cluster2->mutable_weight()->set_value(kWeight50);
3309 SetRouteConfiguration(0, new_route_config);
3310 ResetBackendCounters();
3311 WaitForAllBackends(2, 3, true, RpcOptions().set_rpc_service(SERVICE_ECHO1));
3312 CheckRpcSendOk(kNumEchoRpcs);
3313 CheckRpcSendOk(kNumEcho1Rpcs, RpcOptions().set_rpc_service(SERVICE_ECHO1));
3314 // Make sure RPCs all go to the correct backend.
3315 EXPECT_EQ(kNumEchoRpcs, backends_[0]->backend_service()->request_count());
3316 EXPECT_EQ(0, backends_[0]->backend_service1()->request_count());
3317 EXPECT_EQ(0, backends_[1]->backend_service()->request_count());
3318 const int weight_50_request_count_1 =
3319 backends_[1]->backend_service1()->request_count();
3320 EXPECT_EQ(0, backends_[2]->backend_service()->request_count());
3321 const int weight_50_request_count_2 =
3322 backends_[2]->backend_service1()->request_count();
3323 EXPECT_EQ(0, backends_[3]->backend_service()->request_count());
3324 EXPECT_EQ(0, backends_[3]->backend_service1()->request_count());
3325 EXPECT_THAT(weight_50_request_count_1,
3326 ::testing::AllOf(::testing::Ge(kNumEcho1Rpcs * kWeight50 / 100 *
3327 (1 - kErrorTolerance)),
3328 ::testing::Le(kNumEcho1Rpcs * kWeight50 / 100 *
3329 (1 + kErrorTolerance))));
3330 EXPECT_THAT(weight_50_request_count_2,
3331 ::testing::AllOf(::testing::Ge(kNumEcho1Rpcs * kWeight50 / 100 *
3332 (1 - kErrorTolerance)),
3333 ::testing::Le(kNumEcho1Rpcs * kWeight50 / 100 *
3334 (1 + kErrorTolerance))));
3335 // Change Route Configurations.
3336 weighted_cluster1->mutable_weight()->set_value(kWeight75);
3337 weighted_cluster2->set_name(kNewCluster3Name);
3338 weighted_cluster2->mutable_weight()->set_value(kWeight25);
3339 SetRouteConfiguration(0, new_route_config);
3340 ResetBackendCounters();
3341 WaitForAllBackends(3, 4, true, RpcOptions().set_rpc_service(SERVICE_ECHO1));
3342 CheckRpcSendOk(kNumEchoRpcs);
3343 CheckRpcSendOk(kNumEcho1Rpcs, RpcOptions().set_rpc_service(SERVICE_ECHO1));
3344 // Make sure RPCs all go to the correct backend.
3345 EXPECT_EQ(kNumEchoRpcs, backends_[0]->backend_service()->request_count());
3346 EXPECT_EQ(0, backends_[0]->backend_service1()->request_count());
3347 EXPECT_EQ(0, backends_[1]->backend_service()->request_count());
3348 weight_75_request_count = backends_[1]->backend_service1()->request_count();
3349 EXPECT_EQ(0, backends_[2]->backend_service()->request_count());
3350 EXPECT_EQ(0, backends_[2]->backend_service1()->request_count());
3351 EXPECT_EQ(0, backends_[3]->backend_service()->request_count());
3352 weight_25_request_count = backends_[3]->backend_service1()->request_count();
3353 EXPECT_THAT(weight_75_request_count,
3354 ::testing::AllOf(::testing::Ge(kNumEcho1Rpcs * kWeight75 / 100 *
3355 (1 - kErrorTolerance)),
3356 ::testing::Le(kNumEcho1Rpcs * kWeight75 / 100 *
3357 (1 + kErrorTolerance))));
3358 // TODO: (@donnadionne) Reduce tolerance: increased the tolerance to keep the
3359 // test from flaking while debugging potential root cause.
3360 gpr_log(GPR_INFO, "target_75 received %d rpcs and target_25 received %d rpcs",
3361 weight_75_request_count, weight_25_request_count);
3362 EXPECT_THAT(weight_25_request_count,
3363 ::testing::AllOf(::testing::Ge(kNumEcho1Rpcs * kWeight25 / 100 *
3364 (1 - kErrorToleranceSmallLoad)),
3365 ::testing::Le(kNumEcho1Rpcs * kWeight25 / 100 *
3366 (1 + kErrorToleranceSmallLoad))));
3367 gpr_unsetenv("GRPC_XDS_EXPERIMENTAL_ROUTING");
3368 }
3369
3370 using CdsTest = BasicTest;
3371
3372 // Tests that CDS client should send an ACK upon correct CDS response.
TEST_P(CdsTest,Vanilla)3373 TEST_P(CdsTest, Vanilla) {
3374 SetNextResolution({});
3375 SetNextResolutionForLbChannelAllBalancers();
3376 (void)SendRpc();
3377 EXPECT_EQ(balancers_[0]->ads_service()->cds_response_state().state,
3378 AdsServiceImpl::ResponseState::ACKED);
3379 }
3380
3381 // Tests that CDS client should send a NACK if the cluster type in CDS response
3382 // is other than EDS.
TEST_P(CdsTest,WrongClusterType)3383 TEST_P(CdsTest, WrongClusterType) {
3384 auto cluster = balancers_[0]->ads_service()->default_cluster();
3385 cluster.set_type(envoy::api::v2::Cluster::STATIC);
3386 balancers_[0]->ads_service()->SetCdsResource(cluster);
3387 SetNextResolution({});
3388 SetNextResolutionForLbChannelAllBalancers();
3389 CheckRpcSendFailure();
3390 const auto& response_state =
3391 balancers_[0]->ads_service()->cds_response_state();
3392 EXPECT_EQ(response_state.state, AdsServiceImpl::ResponseState::NACKED);
3393 EXPECT_EQ(response_state.error_message, "DiscoveryType is not EDS.");
3394 }
3395
3396 // Tests that CDS client should send a NACK if the eds_config in CDS response is
3397 // other than ADS.
TEST_P(CdsTest,WrongEdsConfig)3398 TEST_P(CdsTest, WrongEdsConfig) {
3399 auto cluster = balancers_[0]->ads_service()->default_cluster();
3400 cluster.mutable_eds_cluster_config()->mutable_eds_config()->mutable_self();
3401 balancers_[0]->ads_service()->SetCdsResource(cluster);
3402 SetNextResolution({});
3403 SetNextResolutionForLbChannelAllBalancers();
3404 CheckRpcSendFailure();
3405 const auto& response_state =
3406 balancers_[0]->ads_service()->cds_response_state();
3407 EXPECT_EQ(response_state.state, AdsServiceImpl::ResponseState::NACKED);
3408 EXPECT_EQ(response_state.error_message, "EDS ConfigSource is not ADS.");
3409 }
3410
3411 // Tests that CDS client should send a NACK if the lb_policy in CDS response is
3412 // other than ROUND_ROBIN.
TEST_P(CdsTest,WrongLbPolicy)3413 TEST_P(CdsTest, WrongLbPolicy) {
3414 auto cluster = balancers_[0]->ads_service()->default_cluster();
3415 cluster.set_lb_policy(envoy::api::v2::Cluster::LEAST_REQUEST);
3416 balancers_[0]->ads_service()->SetCdsResource(cluster);
3417 SetNextResolution({});
3418 SetNextResolutionForLbChannelAllBalancers();
3419 CheckRpcSendFailure();
3420 const auto& response_state =
3421 balancers_[0]->ads_service()->cds_response_state();
3422 EXPECT_EQ(response_state.state, AdsServiceImpl::ResponseState::NACKED);
3423 EXPECT_EQ(response_state.error_message, "LB policy is not ROUND_ROBIN.");
3424 }
3425
3426 // Tests that CDS client should send a NACK if the lrs_server in CDS response is
3427 // other than SELF.
TEST_P(CdsTest,WrongLrsServer)3428 TEST_P(CdsTest, WrongLrsServer) {
3429 auto cluster = balancers_[0]->ads_service()->default_cluster();
3430 cluster.mutable_lrs_server()->mutable_ads();
3431 balancers_[0]->ads_service()->SetCdsResource(cluster);
3432 SetNextResolution({});
3433 SetNextResolutionForLbChannelAllBalancers();
3434 CheckRpcSendFailure();
3435 const auto& response_state =
3436 balancers_[0]->ads_service()->cds_response_state();
3437 EXPECT_EQ(response_state.state, AdsServiceImpl::ResponseState::NACKED);
3438 EXPECT_EQ(response_state.error_message, "LRS ConfigSource is not self.");
3439 }
3440
3441 // Tests that CDS client times out when no response received.
TEST_P(CdsTest,Timeout)3442 TEST_P(CdsTest, Timeout) {
3443 ResetStub(0, "", 500);
3444 balancers_[0]->ads_service()->SetResourceIgnore(kCdsTypeUrl);
3445 SetNextResolution({});
3446 SetNextResolutionForLbChannelAllBalancers();
3447 CheckRpcSendFailure();
3448 }
3449
3450 using EdsTest = BasicTest;
3451
TEST_P(EdsTest,Timeout)3452 TEST_P(EdsTest, Timeout) {
3453 ResetStub(0, "", 500);
3454 balancers_[0]->ads_service()->SetResourceIgnore(kEdsTypeUrl);
3455 SetNextResolution({});
3456 SetNextResolutionForLbChannelAllBalancers();
3457 CheckRpcSendFailure();
3458 }
3459
3460 // Tests that EDS client should send a NACK if the EDS update contains
3461 // sparse priorities.
TEST_P(EdsTest,NacksSparsePriorityList)3462 TEST_P(EdsTest, NacksSparsePriorityList) {
3463 SetNextResolution({});
3464 SetNextResolutionForLbChannelAllBalancers();
3465 AdsServiceImpl::EdsResourceArgs args({
3466 {"locality0", GetBackendPorts(), kDefaultLocalityWeight, 1},
3467 });
3468 balancers_[0]->ads_service()->SetEdsResource(
3469 AdsServiceImpl::BuildEdsResource(args));
3470 CheckRpcSendFailure();
3471 const auto& response_state =
3472 balancers_[0]->ads_service()->eds_response_state();
3473 EXPECT_EQ(response_state.state, AdsServiceImpl::ResponseState::NACKED);
3474 EXPECT_EQ(response_state.error_message,
3475 "EDS update includes sparse priority list");
3476 }
3477
3478 using LocalityMapTest = BasicTest;
3479
3480 // Tests that the localities in a locality map are picked according to their
3481 // weights.
TEST_P(LocalityMapTest,WeightedRoundRobin)3482 TEST_P(LocalityMapTest, WeightedRoundRobin) {
3483 SetNextResolution({});
3484 SetNextResolutionForLbChannelAllBalancers();
3485 const size_t kNumRpcs = 5000;
3486 const int kLocalityWeight0 = 2;
3487 const int kLocalityWeight1 = 8;
3488 const int kTotalLocalityWeight = kLocalityWeight0 + kLocalityWeight1;
3489 const double kLocalityWeightRate0 =
3490 static_cast<double>(kLocalityWeight0) / kTotalLocalityWeight;
3491 const double kLocalityWeightRate1 =
3492 static_cast<double>(kLocalityWeight1) / kTotalLocalityWeight;
3493 // ADS response contains 2 localities, each of which contains 1 backend.
3494 AdsServiceImpl::EdsResourceArgs args({
3495 {"locality0", GetBackendPorts(0, 1), kLocalityWeight0},
3496 {"locality1", GetBackendPorts(1, 2), kLocalityWeight1},
3497 });
3498 balancers_[0]->ads_service()->SetEdsResource(
3499 AdsServiceImpl::BuildEdsResource(args));
3500 // Wait for both backends to be ready.
3501 WaitForAllBackends(0, 2);
3502 // Send kNumRpcs RPCs.
3503 CheckRpcSendOk(kNumRpcs);
3504 // The locality picking rates should be roughly equal to the expectation.
3505 const double locality_picked_rate_0 =
3506 static_cast<double>(backends_[0]->backend_service()->request_count()) /
3507 kNumRpcs;
3508 const double locality_picked_rate_1 =
3509 static_cast<double>(backends_[1]->backend_service()->request_count()) /
3510 kNumRpcs;
3511 const double kErrorTolerance = 0.2;
3512 EXPECT_THAT(locality_picked_rate_0,
3513 ::testing::AllOf(
3514 ::testing::Ge(kLocalityWeightRate0 * (1 - kErrorTolerance)),
3515 ::testing::Le(kLocalityWeightRate0 * (1 + kErrorTolerance))));
3516 EXPECT_THAT(locality_picked_rate_1,
3517 ::testing::AllOf(
3518 ::testing::Ge(kLocalityWeightRate1 * (1 - kErrorTolerance)),
3519 ::testing::Le(kLocalityWeightRate1 * (1 + kErrorTolerance))));
3520 }
3521
3522 // Tests that we correctly handle a locality containing no endpoints.
TEST_P(LocalityMapTest,LocalityContainingNoEndpoints)3523 TEST_P(LocalityMapTest, LocalityContainingNoEndpoints) {
3524 SetNextResolution({});
3525 SetNextResolutionForLbChannelAllBalancers();
3526 const size_t kNumRpcs = 5000;
3527 // EDS response contains 2 localities, one with no endpoints.
3528 AdsServiceImpl::EdsResourceArgs args({
3529 {"locality0", GetBackendPorts()},
3530 {"locality1", {}},
3531 });
3532 balancers_[0]->ads_service()->SetEdsResource(
3533 AdsServiceImpl::BuildEdsResource(args));
3534 // Wait for both backends to be ready.
3535 WaitForAllBackends();
3536 // Send kNumRpcs RPCs.
3537 CheckRpcSendOk(kNumRpcs);
3538 // All traffic should go to the reachable locality.
3539 EXPECT_EQ(backends_[0]->backend_service()->request_count(),
3540 kNumRpcs / backends_.size());
3541 EXPECT_EQ(backends_[1]->backend_service()->request_count(),
3542 kNumRpcs / backends_.size());
3543 EXPECT_EQ(backends_[2]->backend_service()->request_count(),
3544 kNumRpcs / backends_.size());
3545 EXPECT_EQ(backends_[3]->backend_service()->request_count(),
3546 kNumRpcs / backends_.size());
3547 }
3548
3549 // EDS update with no localities.
TEST_P(LocalityMapTest,NoLocalities)3550 TEST_P(LocalityMapTest, NoLocalities) {
3551 SetNextResolution({});
3552 SetNextResolutionForLbChannelAllBalancers();
3553 // EDS response contains 2 localities, one with no endpoints.
3554 balancers_[0]->ads_service()->SetEdsResource(
3555 AdsServiceImpl::BuildEdsResource({}));
3556 Status status = SendRpc();
3557 EXPECT_FALSE(status.ok());
3558 EXPECT_EQ(status.error_code(), StatusCode::UNAVAILABLE);
3559 }
3560
3561 // Tests that the locality map can work properly even when it contains a large
3562 // number of localities.
TEST_P(LocalityMapTest,StressTest)3563 TEST_P(LocalityMapTest, StressTest) {
3564 SetNextResolution({});
3565 SetNextResolutionForLbChannelAllBalancers();
3566 const size_t kNumLocalities = 100;
3567 // The first ADS response contains kNumLocalities localities, each of which
3568 // contains backend 0.
3569 AdsServiceImpl::EdsResourceArgs args;
3570 for (size_t i = 0; i < kNumLocalities; ++i) {
3571 std::string name = absl::StrCat("locality", i);
3572 AdsServiceImpl::EdsResourceArgs::Locality locality(name,
3573 {backends_[0]->port()});
3574 args.locality_list.emplace_back(std::move(locality));
3575 }
3576 balancers_[0]->ads_service()->SetEdsResource(
3577 AdsServiceImpl::BuildEdsResource(args));
3578 // The second ADS response contains 1 locality, which contains backend 1.
3579 args = AdsServiceImpl::EdsResourceArgs({
3580 {"locality0", GetBackendPorts(1, 2)},
3581 });
3582 std::thread delayed_resource_setter(
3583 std::bind(&BasicTest::SetEdsResourceWithDelay, this, 0,
3584 AdsServiceImpl::BuildEdsResource(args), 60 * 1000));
3585 // Wait until backend 0 is ready, before which kNumLocalities localities are
3586 // received and handled by the xds policy.
3587 WaitForBackend(0, /*reset_counters=*/false);
3588 EXPECT_EQ(0U, backends_[1]->backend_service()->request_count());
3589 // Wait until backend 1 is ready, before which kNumLocalities localities are
3590 // removed by the xds policy.
3591 WaitForBackend(1);
3592 delayed_resource_setter.join();
3593 }
3594
3595 // Tests that the localities in a locality map are picked correctly after update
3596 // (addition, modification, deletion).
TEST_P(LocalityMapTest,UpdateMap)3597 TEST_P(LocalityMapTest, UpdateMap) {
3598 SetNextResolution({});
3599 SetNextResolutionForLbChannelAllBalancers();
3600 const size_t kNumRpcs = 3000;
3601 // The locality weight for the first 3 localities.
3602 const std::vector<int> kLocalityWeights0 = {2, 3, 4};
3603 const double kTotalLocalityWeight0 =
3604 std::accumulate(kLocalityWeights0.begin(), kLocalityWeights0.end(), 0);
3605 std::vector<double> locality_weight_rate_0;
3606 for (int weight : kLocalityWeights0) {
3607 locality_weight_rate_0.push_back(weight / kTotalLocalityWeight0);
3608 }
3609 // Delete the first locality, keep the second locality, change the third
3610 // locality's weight from 4 to 2, and add a new locality with weight 6.
3611 const std::vector<int> kLocalityWeights1 = {3, 2, 6};
3612 const double kTotalLocalityWeight1 =
3613 std::accumulate(kLocalityWeights1.begin(), kLocalityWeights1.end(), 0);
3614 std::vector<double> locality_weight_rate_1 = {
3615 0 /* placeholder for locality 0 */};
3616 for (int weight : kLocalityWeights1) {
3617 locality_weight_rate_1.push_back(weight / kTotalLocalityWeight1);
3618 }
3619 AdsServiceImpl::EdsResourceArgs args({
3620 {"locality0", GetBackendPorts(0, 1), 2},
3621 {"locality1", GetBackendPorts(1, 2), 3},
3622 {"locality2", GetBackendPorts(2, 3), 4},
3623 });
3624 balancers_[0]->ads_service()->SetEdsResource(
3625 AdsServiceImpl::BuildEdsResource(args));
3626 // Wait for the first 3 backends to be ready.
3627 WaitForAllBackends(0, 3);
3628 gpr_log(GPR_INFO, "========= BEFORE FIRST BATCH ==========");
3629 // Send kNumRpcs RPCs.
3630 CheckRpcSendOk(kNumRpcs);
3631 gpr_log(GPR_INFO, "========= DONE WITH FIRST BATCH ==========");
3632 // The picking rates of the first 3 backends should be roughly equal to the
3633 // expectation.
3634 std::vector<double> locality_picked_rates;
3635 for (size_t i = 0; i < 3; ++i) {
3636 locality_picked_rates.push_back(
3637 static_cast<double>(backends_[i]->backend_service()->request_count()) /
3638 kNumRpcs);
3639 }
3640 const double kErrorTolerance = 0.2;
3641 for (size_t i = 0; i < 3; ++i) {
3642 gpr_log(GPR_INFO, "Locality %" PRIuPTR " rate %f", i,
3643 locality_picked_rates[i]);
3644 EXPECT_THAT(
3645 locality_picked_rates[i],
3646 ::testing::AllOf(
3647 ::testing::Ge(locality_weight_rate_0[i] * (1 - kErrorTolerance)),
3648 ::testing::Le(locality_weight_rate_0[i] * (1 + kErrorTolerance))));
3649 }
3650 args = AdsServiceImpl::EdsResourceArgs({
3651 {"locality1", GetBackendPorts(1, 2), 3},
3652 {"locality2", GetBackendPorts(2, 3), 2},
3653 {"locality3", GetBackendPorts(3, 4), 6},
3654 });
3655 balancers_[0]->ads_service()->SetEdsResource(
3656 AdsServiceImpl::BuildEdsResource(args));
3657 // Backend 3 hasn't received any request.
3658 EXPECT_EQ(0U, backends_[3]->backend_service()->request_count());
3659 // Wait until the locality update has been processed, as signaled by backend 3
3660 // receiving a request.
3661 WaitForAllBackends(3, 4);
3662 gpr_log(GPR_INFO, "========= BEFORE SECOND BATCH ==========");
3663 // Send kNumRpcs RPCs.
3664 CheckRpcSendOk(kNumRpcs);
3665 gpr_log(GPR_INFO, "========= DONE WITH SECOND BATCH ==========");
3666 // Backend 0 no longer receives any request.
3667 EXPECT_EQ(0U, backends_[0]->backend_service()->request_count());
3668 // The picking rates of the last 3 backends should be roughly equal to the
3669 // expectation.
3670 locality_picked_rates = {0 /* placeholder for backend 0 */};
3671 for (size_t i = 1; i < 4; ++i) {
3672 locality_picked_rates.push_back(
3673 static_cast<double>(backends_[i]->backend_service()->request_count()) /
3674 kNumRpcs);
3675 }
3676 for (size_t i = 1; i < 4; ++i) {
3677 gpr_log(GPR_INFO, "Locality %" PRIuPTR " rate %f", i,
3678 locality_picked_rates[i]);
3679 EXPECT_THAT(
3680 locality_picked_rates[i],
3681 ::testing::AllOf(
3682 ::testing::Ge(locality_weight_rate_1[i] * (1 - kErrorTolerance)),
3683 ::testing::Le(locality_weight_rate_1[i] * (1 + kErrorTolerance))));
3684 }
3685 }
3686
3687 // Tests that we don't fail RPCs when replacing all of the localities in
3688 // a given priority.
TEST_P(LocalityMapTest,ReplaceAllLocalitiesInPriority)3689 TEST_P(LocalityMapTest, ReplaceAllLocalitiesInPriority) {
3690 SetNextResolution({});
3691 SetNextResolutionForLbChannelAllBalancers();
3692 AdsServiceImpl::EdsResourceArgs args({
3693 {"locality0", GetBackendPorts(0, 1)},
3694 });
3695 balancers_[0]->ads_service()->SetEdsResource(
3696 AdsServiceImpl::BuildEdsResource(args));
3697 args = AdsServiceImpl::EdsResourceArgs({
3698 {"locality1", GetBackendPorts(1, 2)},
3699 });
3700 std::thread delayed_resource_setter(
3701 std::bind(&BasicTest::SetEdsResourceWithDelay, this, 0,
3702 AdsServiceImpl::BuildEdsResource(args), 5000));
3703 // Wait for the first backend to be ready.
3704 WaitForBackend(0);
3705 // Keep sending RPCs until we switch over to backend 1, which tells us
3706 // that we received the update. No RPCs should fail during this
3707 // transition.
3708 WaitForBackend(1, /*reset_counters=*/true, /*require_success=*/true);
3709 delayed_resource_setter.join();
3710 }
3711
3712 class FailoverTest : public BasicTest {
3713 public:
SetUp()3714 void SetUp() override {
3715 BasicTest::SetUp();
3716 ResetStub(100, "");
3717 }
3718 };
3719
3720 // Localities with the highest priority are used when multiple priority exist.
TEST_P(FailoverTest,ChooseHighestPriority)3721 TEST_P(FailoverTest, ChooseHighestPriority) {
3722 SetNextResolution({});
3723 SetNextResolutionForLbChannelAllBalancers();
3724 AdsServiceImpl::EdsResourceArgs args({
3725 {"locality0", GetBackendPorts(0, 1), kDefaultLocalityWeight, 1},
3726 {"locality1", GetBackendPorts(1, 2), kDefaultLocalityWeight, 2},
3727 {"locality2", GetBackendPorts(2, 3), kDefaultLocalityWeight, 3},
3728 {"locality3", GetBackendPorts(3, 4), kDefaultLocalityWeight, 0},
3729 });
3730 balancers_[0]->ads_service()->SetEdsResource(
3731 AdsServiceImpl::BuildEdsResource(args));
3732 WaitForBackend(3, false);
3733 for (size_t i = 0; i < 3; ++i) {
3734 EXPECT_EQ(0U, backends_[i]->backend_service()->request_count());
3735 }
3736 }
3737
3738 // Does not choose priority with no endpoints.
TEST_P(FailoverTest,DoesNotUsePriorityWithNoEndpoints)3739 TEST_P(FailoverTest, DoesNotUsePriorityWithNoEndpoints) {
3740 SetNextResolution({});
3741 SetNextResolutionForLbChannelAllBalancers();
3742 AdsServiceImpl::EdsResourceArgs args({
3743 {"locality0", GetBackendPorts(0, 1), kDefaultLocalityWeight, 1},
3744 {"locality1", GetBackendPorts(1, 2), kDefaultLocalityWeight, 2},
3745 {"locality2", GetBackendPorts(2, 3), kDefaultLocalityWeight, 3},
3746 {"locality3", {}, kDefaultLocalityWeight, 0},
3747 });
3748 balancers_[0]->ads_service()->SetEdsResource(
3749 AdsServiceImpl::BuildEdsResource(args));
3750 WaitForBackend(0, false);
3751 for (size_t i = 1; i < 3; ++i) {
3752 EXPECT_EQ(0U, backends_[i]->backend_service()->request_count());
3753 }
3754 }
3755
3756 // Does not choose locality with no endpoints.
TEST_P(FailoverTest,DoesNotUseLocalityWithNoEndpoints)3757 TEST_P(FailoverTest, DoesNotUseLocalityWithNoEndpoints) {
3758 SetNextResolution({});
3759 SetNextResolutionForLbChannelAllBalancers();
3760 AdsServiceImpl::EdsResourceArgs args({
3761 {"locality0", {}, kDefaultLocalityWeight, 0},
3762 {"locality1", GetBackendPorts(), kDefaultLocalityWeight, 0},
3763 });
3764 balancers_[0]->ads_service()->SetEdsResource(
3765 AdsServiceImpl::BuildEdsResource(args));
3766 // Wait for all backends to be used.
3767 std::tuple<int, int, int> counts = WaitForAllBackends();
3768 // Make sure no RPCs failed in the transition.
3769 EXPECT_EQ(0, std::get<1>(counts));
3770 }
3771
3772 // If the higher priority localities are not reachable, failover to the highest
3773 // priority among the rest.
TEST_P(FailoverTest,Failover)3774 TEST_P(FailoverTest, Failover) {
3775 SetNextResolution({});
3776 SetNextResolutionForLbChannelAllBalancers();
3777 AdsServiceImpl::EdsResourceArgs args({
3778 {"locality0", GetBackendPorts(0, 1), kDefaultLocalityWeight, 1},
3779 {"locality1", GetBackendPorts(1, 2), kDefaultLocalityWeight, 2},
3780 {"locality2", GetBackendPorts(2, 3), kDefaultLocalityWeight, 3},
3781 {"locality3", GetBackendPorts(3, 4), kDefaultLocalityWeight, 0},
3782 });
3783 ShutdownBackend(3);
3784 ShutdownBackend(0);
3785 balancers_[0]->ads_service()->SetEdsResource(
3786 AdsServiceImpl::BuildEdsResource(args));
3787 WaitForBackend(1, false);
3788 for (size_t i = 0; i < 4; ++i) {
3789 if (i == 1) continue;
3790 EXPECT_EQ(0U, backends_[i]->backend_service()->request_count());
3791 }
3792 }
3793
3794 // If a locality with higher priority than the current one becomes ready,
3795 // switch to it.
TEST_P(FailoverTest,SwitchBackToHigherPriority)3796 TEST_P(FailoverTest, SwitchBackToHigherPriority) {
3797 SetNextResolution({});
3798 SetNextResolutionForLbChannelAllBalancers();
3799 const size_t kNumRpcs = 100;
3800 AdsServiceImpl::EdsResourceArgs args({
3801 {"locality0", GetBackendPorts(0, 1), kDefaultLocalityWeight, 1},
3802 {"locality1", GetBackendPorts(1, 2), kDefaultLocalityWeight, 2},
3803 {"locality2", GetBackendPorts(2, 3), kDefaultLocalityWeight, 3},
3804 {"locality3", GetBackendPorts(3, 4), kDefaultLocalityWeight, 0},
3805 });
3806 ShutdownBackend(3);
3807 ShutdownBackend(0);
3808 balancers_[0]->ads_service()->SetEdsResource(
3809 AdsServiceImpl::BuildEdsResource(args));
3810 WaitForBackend(1, false);
3811 for (size_t i = 0; i < 4; ++i) {
3812 if (i == 1) continue;
3813 EXPECT_EQ(0U, backends_[i]->backend_service()->request_count());
3814 }
3815 StartBackend(0);
3816 WaitForBackend(0);
3817 CheckRpcSendOk(kNumRpcs);
3818 EXPECT_EQ(kNumRpcs, backends_[0]->backend_service()->request_count());
3819 }
3820
3821 // The first update only contains unavailable priorities. The second update
3822 // contains available priorities.
TEST_P(FailoverTest,UpdateInitialUnavailable)3823 TEST_P(FailoverTest, UpdateInitialUnavailable) {
3824 SetNextResolution({});
3825 SetNextResolutionForLbChannelAllBalancers();
3826 AdsServiceImpl::EdsResourceArgs args({
3827 {"locality0", GetBackendPorts(0, 1), kDefaultLocalityWeight, 0},
3828 {"locality1", GetBackendPorts(1, 2), kDefaultLocalityWeight, 1},
3829 });
3830 balancers_[0]->ads_service()->SetEdsResource(
3831 AdsServiceImpl::BuildEdsResource(args));
3832 args = AdsServiceImpl::EdsResourceArgs({
3833 {"locality0", GetBackendPorts(0, 1), kDefaultLocalityWeight, 0},
3834 {"locality1", GetBackendPorts(1, 2), kDefaultLocalityWeight, 1},
3835 {"locality2", GetBackendPorts(2, 3), kDefaultLocalityWeight, 2},
3836 {"locality3", GetBackendPorts(3, 4), kDefaultLocalityWeight, 3},
3837 });
3838 ShutdownBackend(0);
3839 ShutdownBackend(1);
3840 std::thread delayed_resource_setter(
3841 std::bind(&BasicTest::SetEdsResourceWithDelay, this, 0,
3842 AdsServiceImpl::BuildEdsResource(args), 1000));
3843 gpr_timespec deadline = gpr_time_add(gpr_now(GPR_CLOCK_REALTIME),
3844 gpr_time_from_millis(500, GPR_TIMESPAN));
3845 // Send 0.5 second worth of RPCs.
3846 do {
3847 CheckRpcSendFailure();
3848 } while (gpr_time_cmp(gpr_now(GPR_CLOCK_REALTIME), deadline) < 0);
3849 WaitForBackend(2, false);
3850 for (size_t i = 0; i < 4; ++i) {
3851 if (i == 2) continue;
3852 EXPECT_EQ(0U, backends_[i]->backend_service()->request_count());
3853 }
3854 delayed_resource_setter.join();
3855 }
3856
3857 // Tests that after the localities' priorities are updated, we still choose the
3858 // highest READY priority with the updated localities.
TEST_P(FailoverTest,UpdatePriority)3859 TEST_P(FailoverTest, UpdatePriority) {
3860 SetNextResolution({});
3861 SetNextResolutionForLbChannelAllBalancers();
3862 const size_t kNumRpcs = 100;
3863 AdsServiceImpl::EdsResourceArgs args({
3864 {"locality0", GetBackendPorts(0, 1), kDefaultLocalityWeight, 1},
3865 {"locality1", GetBackendPorts(1, 2), kDefaultLocalityWeight, 2},
3866 {"locality2", GetBackendPorts(2, 3), kDefaultLocalityWeight, 3},
3867 {"locality3", GetBackendPorts(3, 4), kDefaultLocalityWeight, 0},
3868 });
3869 balancers_[0]->ads_service()->SetEdsResource(
3870 AdsServiceImpl::BuildEdsResource(args));
3871 args = AdsServiceImpl::EdsResourceArgs({
3872 {"locality0", GetBackendPorts(0, 1), kDefaultLocalityWeight, 2},
3873 {"locality1", GetBackendPorts(1, 2), kDefaultLocalityWeight, 0},
3874 {"locality2", GetBackendPorts(2, 3), kDefaultLocalityWeight, 1},
3875 {"locality3", GetBackendPorts(3, 4), kDefaultLocalityWeight, 3},
3876 });
3877 std::thread delayed_resource_setter(
3878 std::bind(&BasicTest::SetEdsResourceWithDelay, this, 0,
3879 AdsServiceImpl::BuildEdsResource(args), 1000));
3880 WaitForBackend(3, false);
3881 for (size_t i = 0; i < 3; ++i) {
3882 EXPECT_EQ(0U, backends_[i]->backend_service()->request_count());
3883 }
3884 WaitForBackend(1);
3885 CheckRpcSendOk(kNumRpcs);
3886 EXPECT_EQ(kNumRpcs, backends_[1]->backend_service()->request_count());
3887 delayed_resource_setter.join();
3888 }
3889
3890 // Moves all localities in the current priority to a higher priority.
TEST_P(FailoverTest,MoveAllLocalitiesInCurrentPriorityToHigherPriority)3891 TEST_P(FailoverTest, MoveAllLocalitiesInCurrentPriorityToHigherPriority) {
3892 SetNextResolution({});
3893 SetNextResolutionForLbChannelAllBalancers();
3894 // First update:
3895 // - Priority 0 is locality 0, containing backend 0, which is down.
3896 // - Priority 1 is locality 1, containing backends 1 and 2, which are up.
3897 ShutdownBackend(0);
3898 AdsServiceImpl::EdsResourceArgs args({
3899 {"locality0", GetBackendPorts(0, 1), kDefaultLocalityWeight, 0},
3900 {"locality1", GetBackendPorts(1, 3), kDefaultLocalityWeight, 1},
3901 });
3902 balancers_[0]->ads_service()->SetEdsResource(
3903 AdsServiceImpl::BuildEdsResource(args));
3904 // Second update:
3905 // - Priority 0 contains both localities 0 and 1.
3906 // - Priority 1 is not present.
3907 // - We add backend 3 to locality 1, just so we have a way to know
3908 // when the update has been seen by the client.
3909 args = AdsServiceImpl::EdsResourceArgs({
3910 {"locality0", GetBackendPorts(0, 1), kDefaultLocalityWeight, 0},
3911 {"locality1", GetBackendPorts(1, 4), kDefaultLocalityWeight, 0},
3912 });
3913 std::thread delayed_resource_setter(
3914 std::bind(&BasicTest::SetEdsResourceWithDelay, this, 0,
3915 AdsServiceImpl::BuildEdsResource(args), 1000));
3916 // When we get the first update, all backends in priority 0 are down,
3917 // so we will create priority 1. Backends 1 and 2 should have traffic,
3918 // but backend 3 should not.
3919 WaitForAllBackends(1, 3, false);
3920 EXPECT_EQ(0UL, backends_[3]->backend_service()->request_count());
3921 // When backend 3 gets traffic, we know the second update has been seen.
3922 WaitForBackend(3);
3923 // The ADS service of balancer 0 got at least 1 response.
3924 EXPECT_GT(balancers_[0]->ads_service()->eds_response_state().state,
3925 AdsServiceImpl::ResponseState::NOT_SENT);
3926 delayed_resource_setter.join();
3927 }
3928
3929 using DropTest = BasicTest;
3930
3931 // Tests that RPCs are dropped according to the drop config.
TEST_P(DropTest,Vanilla)3932 TEST_P(DropTest, Vanilla) {
3933 SetNextResolution({});
3934 SetNextResolutionForLbChannelAllBalancers();
3935 const size_t kNumRpcs = 5000;
3936 const uint32_t kDropPerMillionForLb = 100000;
3937 const uint32_t kDropPerMillionForThrottle = 200000;
3938 const double kDropRateForLb = kDropPerMillionForLb / 1000000.0;
3939 const double kDropRateForThrottle = kDropPerMillionForThrottle / 1000000.0;
3940 const double KDropRateForLbAndThrottle =
3941 kDropRateForLb + (1 - kDropRateForLb) * kDropRateForThrottle;
3942 // The ADS response contains two drop categories.
3943 AdsServiceImpl::EdsResourceArgs args({
3944 {"locality0", GetBackendPorts()},
3945 });
3946 args.drop_categories = {{kLbDropType, kDropPerMillionForLb},
3947 {kThrottleDropType, kDropPerMillionForThrottle}};
3948 balancers_[0]->ads_service()->SetEdsResource(
3949 AdsServiceImpl::BuildEdsResource(args));
3950 WaitForAllBackends();
3951 // Send kNumRpcs RPCs and count the drops.
3952 size_t num_drops = 0;
3953 for (size_t i = 0; i < kNumRpcs; ++i) {
3954 EchoResponse response;
3955 const Status status = SendRpc(RpcOptions(), &response);
3956 if (!status.ok() &&
3957 status.error_message() == "Call dropped by load balancing policy") {
3958 ++num_drops;
3959 } else {
3960 EXPECT_TRUE(status.ok()) << "code=" << status.error_code()
3961 << " message=" << status.error_message();
3962 EXPECT_EQ(response.message(), kRequestMessage_);
3963 }
3964 }
3965 // The drop rate should be roughly equal to the expectation.
3966 const double seen_drop_rate = static_cast<double>(num_drops) / kNumRpcs;
3967 const double kErrorTolerance = 0.2;
3968 EXPECT_THAT(
3969 seen_drop_rate,
3970 ::testing::AllOf(
3971 ::testing::Ge(KDropRateForLbAndThrottle * (1 - kErrorTolerance)),
3972 ::testing::Le(KDropRateForLbAndThrottle * (1 + kErrorTolerance))));
3973 }
3974
3975 // Tests that drop config is converted correctly from per hundred.
TEST_P(DropTest,DropPerHundred)3976 TEST_P(DropTest, DropPerHundred) {
3977 SetNextResolution({});
3978 SetNextResolutionForLbChannelAllBalancers();
3979 const size_t kNumRpcs = 5000;
3980 const uint32_t kDropPerHundredForLb = 10;
3981 const double kDropRateForLb = kDropPerHundredForLb / 100.0;
3982 // The ADS response contains one drop category.
3983 AdsServiceImpl::EdsResourceArgs args({
3984 {"locality0", GetBackendPorts()},
3985 });
3986 args.drop_categories = {{kLbDropType, kDropPerHundredForLb}};
3987 args.drop_denominator = FractionalPercent::HUNDRED;
3988 balancers_[0]->ads_service()->SetEdsResource(
3989 AdsServiceImpl::BuildEdsResource(args));
3990 WaitForAllBackends();
3991 // Send kNumRpcs RPCs and count the drops.
3992 size_t num_drops = 0;
3993 for (size_t i = 0; i < kNumRpcs; ++i) {
3994 EchoResponse response;
3995 const Status status = SendRpc(RpcOptions(), &response);
3996 if (!status.ok() &&
3997 status.error_message() == "Call dropped by load balancing policy") {
3998 ++num_drops;
3999 } else {
4000 EXPECT_TRUE(status.ok()) << "code=" << status.error_code()
4001 << " message=" << status.error_message();
4002 EXPECT_EQ(response.message(), kRequestMessage_);
4003 }
4004 }
4005 // The drop rate should be roughly equal to the expectation.
4006 const double seen_drop_rate = static_cast<double>(num_drops) / kNumRpcs;
4007 const double kErrorTolerance = 0.2;
4008 EXPECT_THAT(
4009 seen_drop_rate,
4010 ::testing::AllOf(::testing::Ge(kDropRateForLb * (1 - kErrorTolerance)),
4011 ::testing::Le(kDropRateForLb * (1 + kErrorTolerance))));
4012 }
4013
4014 // Tests that drop config is converted correctly from per ten thousand.
TEST_P(DropTest,DropPerTenThousand)4015 TEST_P(DropTest, DropPerTenThousand) {
4016 SetNextResolution({});
4017 SetNextResolutionForLbChannelAllBalancers();
4018 const size_t kNumRpcs = 5000;
4019 const uint32_t kDropPerTenThousandForLb = 1000;
4020 const double kDropRateForLb = kDropPerTenThousandForLb / 10000.0;
4021 // The ADS response contains one drop category.
4022 AdsServiceImpl::EdsResourceArgs args({
4023 {"locality0", GetBackendPorts()},
4024 });
4025 args.drop_categories = {{kLbDropType, kDropPerTenThousandForLb}};
4026 args.drop_denominator = FractionalPercent::TEN_THOUSAND;
4027 balancers_[0]->ads_service()->SetEdsResource(
4028 AdsServiceImpl::BuildEdsResource(args));
4029 WaitForAllBackends();
4030 // Send kNumRpcs RPCs and count the drops.
4031 size_t num_drops = 0;
4032 for (size_t i = 0; i < kNumRpcs; ++i) {
4033 EchoResponse response;
4034 const Status status = SendRpc(RpcOptions(), &response);
4035 if (!status.ok() &&
4036 status.error_message() == "Call dropped by load balancing policy") {
4037 ++num_drops;
4038 } else {
4039 EXPECT_TRUE(status.ok()) << "code=" << status.error_code()
4040 << " message=" << status.error_message();
4041 EXPECT_EQ(response.message(), kRequestMessage_);
4042 }
4043 }
4044 // The drop rate should be roughly equal to the expectation.
4045 const double seen_drop_rate = static_cast<double>(num_drops) / kNumRpcs;
4046 const double kErrorTolerance = 0.2;
4047 EXPECT_THAT(
4048 seen_drop_rate,
4049 ::testing::AllOf(::testing::Ge(kDropRateForLb * (1 - kErrorTolerance)),
4050 ::testing::Le(kDropRateForLb * (1 + kErrorTolerance))));
4051 }
4052
4053 // Tests that drop is working correctly after update.
TEST_P(DropTest,Update)4054 TEST_P(DropTest, Update) {
4055 SetNextResolution({});
4056 SetNextResolutionForLbChannelAllBalancers();
4057 const size_t kNumRpcs = 3000;
4058 const uint32_t kDropPerMillionForLb = 100000;
4059 const uint32_t kDropPerMillionForThrottle = 200000;
4060 const double kDropRateForLb = kDropPerMillionForLb / 1000000.0;
4061 const double kDropRateForThrottle = kDropPerMillionForThrottle / 1000000.0;
4062 const double KDropRateForLbAndThrottle =
4063 kDropRateForLb + (1 - kDropRateForLb) * kDropRateForThrottle;
4064 // The first ADS response contains one drop category.
4065 AdsServiceImpl::EdsResourceArgs args({
4066 {"locality0", GetBackendPorts()},
4067 });
4068 args.drop_categories = {{kLbDropType, kDropPerMillionForLb}};
4069 balancers_[0]->ads_service()->SetEdsResource(
4070 AdsServiceImpl::BuildEdsResource(args));
4071 WaitForAllBackends();
4072 // Send kNumRpcs RPCs and count the drops.
4073 size_t num_drops = 0;
4074 gpr_log(GPR_INFO, "========= BEFORE FIRST BATCH ==========");
4075 for (size_t i = 0; i < kNumRpcs; ++i) {
4076 EchoResponse response;
4077 const Status status = SendRpc(RpcOptions(), &response);
4078 if (!status.ok() &&
4079 status.error_message() == "Call dropped by load balancing policy") {
4080 ++num_drops;
4081 } else {
4082 EXPECT_TRUE(status.ok()) << "code=" << status.error_code()
4083 << " message=" << status.error_message();
4084 EXPECT_EQ(response.message(), kRequestMessage_);
4085 }
4086 }
4087 gpr_log(GPR_INFO, "========= DONE WITH FIRST BATCH ==========");
4088 // The drop rate should be roughly equal to the expectation.
4089 double seen_drop_rate = static_cast<double>(num_drops) / kNumRpcs;
4090 gpr_log(GPR_INFO, "First batch drop rate %f", seen_drop_rate);
4091 const double kErrorTolerance = 0.3;
4092 EXPECT_THAT(
4093 seen_drop_rate,
4094 ::testing::AllOf(::testing::Ge(kDropRateForLb * (1 - kErrorTolerance)),
4095 ::testing::Le(kDropRateForLb * (1 + kErrorTolerance))));
4096 // The second ADS response contains two drop categories, send an update EDS
4097 // response.
4098 args.drop_categories = {{kLbDropType, kDropPerMillionForLb},
4099 {kThrottleDropType, kDropPerMillionForThrottle}};
4100 balancers_[0]->ads_service()->SetEdsResource(
4101 AdsServiceImpl::BuildEdsResource(args));
4102 // Wait until the drop rate increases to the middle of the two configs, which
4103 // implies that the update has been in effect.
4104 const double kDropRateThreshold =
4105 (kDropRateForLb + KDropRateForLbAndThrottle) / 2;
4106 size_t num_rpcs = kNumRpcs;
4107 while (seen_drop_rate < kDropRateThreshold) {
4108 EchoResponse response;
4109 const Status status = SendRpc(RpcOptions(), &response);
4110 ++num_rpcs;
4111 if (!status.ok() &&
4112 status.error_message() == "Call dropped by load balancing policy") {
4113 ++num_drops;
4114 } else {
4115 EXPECT_TRUE(status.ok()) << "code=" << status.error_code()
4116 << " message=" << status.error_message();
4117 EXPECT_EQ(response.message(), kRequestMessage_);
4118 }
4119 seen_drop_rate = static_cast<double>(num_drops) / num_rpcs;
4120 }
4121 // Send kNumRpcs RPCs and count the drops.
4122 num_drops = 0;
4123 gpr_log(GPR_INFO, "========= BEFORE SECOND BATCH ==========");
4124 for (size_t i = 0; i < kNumRpcs; ++i) {
4125 EchoResponse response;
4126 const Status status = SendRpc(RpcOptions(), &response);
4127 if (!status.ok() &&
4128 status.error_message() == "Call dropped by load balancing policy") {
4129 ++num_drops;
4130 } else {
4131 EXPECT_TRUE(status.ok()) << "code=" << status.error_code()
4132 << " message=" << status.error_message();
4133 EXPECT_EQ(response.message(), kRequestMessage_);
4134 }
4135 }
4136 gpr_log(GPR_INFO, "========= DONE WITH SECOND BATCH ==========");
4137 // The new drop rate should be roughly equal to the expectation.
4138 seen_drop_rate = static_cast<double>(num_drops) / kNumRpcs;
4139 gpr_log(GPR_INFO, "Second batch drop rate %f", seen_drop_rate);
4140 EXPECT_THAT(
4141 seen_drop_rate,
4142 ::testing::AllOf(
4143 ::testing::Ge(KDropRateForLbAndThrottle * (1 - kErrorTolerance)),
4144 ::testing::Le(KDropRateForLbAndThrottle * (1 + kErrorTolerance))));
4145 }
4146
4147 // Tests that all the RPCs are dropped if any drop category drops 100%.
TEST_P(DropTest,DropAll)4148 TEST_P(DropTest, DropAll) {
4149 SetNextResolution({});
4150 SetNextResolutionForLbChannelAllBalancers();
4151 const size_t kNumRpcs = 1000;
4152 const uint32_t kDropPerMillionForLb = 100000;
4153 const uint32_t kDropPerMillionForThrottle = 1000000;
4154 // The ADS response contains two drop categories.
4155 AdsServiceImpl::EdsResourceArgs args;
4156 args.drop_categories = {{kLbDropType, kDropPerMillionForLb},
4157 {kThrottleDropType, kDropPerMillionForThrottle}};
4158 balancers_[0]->ads_service()->SetEdsResource(
4159 AdsServiceImpl::BuildEdsResource(args));
4160 // Send kNumRpcs RPCs and all of them are dropped.
4161 for (size_t i = 0; i < kNumRpcs; ++i) {
4162 EchoResponse response;
4163 const Status status = SendRpc(RpcOptions(), &response);
4164 EXPECT_EQ(status.error_code(), StatusCode::UNAVAILABLE);
4165 EXPECT_EQ(status.error_message(), "Call dropped by load balancing policy");
4166 }
4167 }
4168
4169 class BalancerUpdateTest : public XdsEnd2endTest {
4170 public:
BalancerUpdateTest()4171 BalancerUpdateTest() : XdsEnd2endTest(4, 3) {}
4172 };
4173
4174 // Tests that the old LB call is still used after the balancer address update as
4175 // long as that call is still alive.
TEST_P(BalancerUpdateTest,UpdateBalancersButKeepUsingOriginalBalancer)4176 TEST_P(BalancerUpdateTest, UpdateBalancersButKeepUsingOriginalBalancer) {
4177 SetNextResolution({});
4178 SetNextResolutionForLbChannelAllBalancers();
4179 AdsServiceImpl::EdsResourceArgs args({
4180 {"locality0", {backends_[0]->port()}},
4181 });
4182 balancers_[0]->ads_service()->SetEdsResource(
4183 AdsServiceImpl::BuildEdsResource(args));
4184 args = AdsServiceImpl::EdsResourceArgs({
4185 {"locality0", {backends_[1]->port()}},
4186 });
4187 balancers_[1]->ads_service()->SetEdsResource(
4188 AdsServiceImpl::BuildEdsResource(args));
4189 // Wait until the first backend is ready.
4190 WaitForBackend(0);
4191 // Send 10 requests.
4192 gpr_log(GPR_INFO, "========= BEFORE FIRST BATCH ==========");
4193 CheckRpcSendOk(10);
4194 gpr_log(GPR_INFO, "========= DONE WITH FIRST BATCH ==========");
4195 // All 10 requests should have gone to the first backend.
4196 EXPECT_EQ(10U, backends_[0]->backend_service()->request_count());
4197 // The ADS service of balancer 0 sent at least 1 response.
4198 EXPECT_GT(balancers_[0]->ads_service()->eds_response_state().state,
4199 AdsServiceImpl::ResponseState::NOT_SENT);
4200 EXPECT_EQ(balancers_[1]->ads_service()->eds_response_state().state,
4201 AdsServiceImpl::ResponseState::NOT_SENT);
4202 EXPECT_EQ(balancers_[2]->ads_service()->eds_response_state().state,
4203 AdsServiceImpl::ResponseState::NOT_SENT);
4204 gpr_log(GPR_INFO, "========= ABOUT TO UPDATE 1 ==========");
4205 SetNextResolutionForLbChannel({balancers_[1]->port()});
4206 gpr_log(GPR_INFO, "========= UPDATE 1 DONE ==========");
4207 EXPECT_EQ(0U, backends_[1]->backend_service()->request_count());
4208 gpr_timespec deadline = gpr_time_add(
4209 gpr_now(GPR_CLOCK_REALTIME), gpr_time_from_millis(10000, GPR_TIMESPAN));
4210 // Send 10 seconds worth of RPCs
4211 do {
4212 CheckRpcSendOk();
4213 } while (gpr_time_cmp(gpr_now(GPR_CLOCK_REALTIME), deadline) < 0);
4214 // The current LB call is still working, so xds continued using it to the
4215 // first balancer, which doesn't assign the second backend.
4216 EXPECT_EQ(0U, backends_[1]->backend_service()->request_count());
4217 // The ADS service of balancer 0 sent at least 1 response.
4218 EXPECT_GT(balancers_[0]->ads_service()->eds_response_state().state,
4219 AdsServiceImpl::ResponseState::NOT_SENT);
4220 EXPECT_EQ(balancers_[1]->ads_service()->eds_response_state().state,
4221 AdsServiceImpl::ResponseState::NOT_SENT);
4222 EXPECT_EQ(balancers_[2]->ads_service()->eds_response_state().state,
4223 AdsServiceImpl::ResponseState::NOT_SENT);
4224 }
4225
4226 // Tests that the old LB call is still used after multiple balancer address
4227 // updates as long as that call is still alive. Send an update with the same set
4228 // of LBs as the one in SetUp() in order to verify that the LB channel inside
4229 // xds keeps the initial connection (which by definition is also present in the
4230 // update).
TEST_P(BalancerUpdateTest,Repeated)4231 TEST_P(BalancerUpdateTest, Repeated) {
4232 SetNextResolution({});
4233 SetNextResolutionForLbChannelAllBalancers();
4234 AdsServiceImpl::EdsResourceArgs args({
4235 {"locality0", {backends_[0]->port()}},
4236 });
4237 balancers_[0]->ads_service()->SetEdsResource(
4238 AdsServiceImpl::BuildEdsResource(args));
4239 args = AdsServiceImpl::EdsResourceArgs({
4240 {"locality0", {backends_[1]->port()}},
4241 });
4242 balancers_[1]->ads_service()->SetEdsResource(
4243 AdsServiceImpl::BuildEdsResource(args));
4244 // Wait until the first backend is ready.
4245 WaitForBackend(0);
4246 // Send 10 requests.
4247 gpr_log(GPR_INFO, "========= BEFORE FIRST BATCH ==========");
4248 CheckRpcSendOk(10);
4249 gpr_log(GPR_INFO, "========= DONE WITH FIRST BATCH ==========");
4250 // All 10 requests should have gone to the first backend.
4251 EXPECT_EQ(10U, backends_[0]->backend_service()->request_count());
4252 // The ADS service of balancer 0 sent at least 1 response.
4253 EXPECT_GT(balancers_[0]->ads_service()->eds_response_state().state,
4254 AdsServiceImpl::ResponseState::NOT_SENT);
4255 EXPECT_EQ(balancers_[1]->ads_service()->eds_response_state().state,
4256 AdsServiceImpl::ResponseState::NOT_SENT);
4257 EXPECT_EQ(balancers_[2]->ads_service()->eds_response_state().state,
4258 AdsServiceImpl::ResponseState::NOT_SENT);
4259 std::vector<int> ports;
4260 ports.emplace_back(balancers_[0]->port());
4261 ports.emplace_back(balancers_[1]->port());
4262 ports.emplace_back(balancers_[2]->port());
4263 gpr_log(GPR_INFO, "========= ABOUT TO UPDATE 1 ==========");
4264 SetNextResolutionForLbChannel(ports);
4265 gpr_log(GPR_INFO, "========= UPDATE 1 DONE ==========");
4266 EXPECT_EQ(0U, backends_[1]->backend_service()->request_count());
4267 gpr_timespec deadline = gpr_time_add(
4268 gpr_now(GPR_CLOCK_REALTIME), gpr_time_from_millis(10000, GPR_TIMESPAN));
4269 // Send 10 seconds worth of RPCs
4270 do {
4271 CheckRpcSendOk();
4272 } while (gpr_time_cmp(gpr_now(GPR_CLOCK_REALTIME), deadline) < 0);
4273 // xds continued using the original LB call to the first balancer, which
4274 // doesn't assign the second backend.
4275 EXPECT_EQ(0U, backends_[1]->backend_service()->request_count());
4276 ports.clear();
4277 ports.emplace_back(balancers_[0]->port());
4278 ports.emplace_back(balancers_[1]->port());
4279 gpr_log(GPR_INFO, "========= ABOUT TO UPDATE 2 ==========");
4280 SetNextResolutionForLbChannel(ports);
4281 gpr_log(GPR_INFO, "========= UPDATE 2 DONE ==========");
4282 EXPECT_EQ(0U, backends_[1]->backend_service()->request_count());
4283 deadline = gpr_time_add(gpr_now(GPR_CLOCK_REALTIME),
4284 gpr_time_from_millis(10000, GPR_TIMESPAN));
4285 // Send 10 seconds worth of RPCs
4286 do {
4287 CheckRpcSendOk();
4288 } while (gpr_time_cmp(gpr_now(GPR_CLOCK_REALTIME), deadline) < 0);
4289 // xds continued using the original LB call to the first balancer, which
4290 // doesn't assign the second backend.
4291 EXPECT_EQ(0U, backends_[1]->backend_service()->request_count());
4292 }
4293
4294 // Tests that if the balancer is down, the RPCs will still be sent to the
4295 // backends according to the last balancer response, until a new balancer is
4296 // reachable.
TEST_P(BalancerUpdateTest,DeadUpdate)4297 TEST_P(BalancerUpdateTest, DeadUpdate) {
4298 SetNextResolution({});
4299 SetNextResolutionForLbChannel({balancers_[0]->port()});
4300 AdsServiceImpl::EdsResourceArgs args({
4301 {"locality0", {backends_[0]->port()}},
4302 });
4303 balancers_[0]->ads_service()->SetEdsResource(
4304 AdsServiceImpl::BuildEdsResource(args));
4305 args = AdsServiceImpl::EdsResourceArgs({
4306 {"locality0", {backends_[1]->port()}},
4307 });
4308 balancers_[1]->ads_service()->SetEdsResource(
4309 AdsServiceImpl::BuildEdsResource(args));
4310 // Start servers and send 10 RPCs per server.
4311 gpr_log(GPR_INFO, "========= BEFORE FIRST BATCH ==========");
4312 CheckRpcSendOk(10);
4313 gpr_log(GPR_INFO, "========= DONE WITH FIRST BATCH ==========");
4314 // All 10 requests should have gone to the first backend.
4315 EXPECT_EQ(10U, backends_[0]->backend_service()->request_count());
4316 // The ADS service of balancer 0 sent at least 1 response.
4317 EXPECT_GT(balancers_[0]->ads_service()->eds_response_state().state,
4318 AdsServiceImpl::ResponseState::NOT_SENT);
4319 EXPECT_EQ(balancers_[1]->ads_service()->eds_response_state().state,
4320 AdsServiceImpl::ResponseState::NOT_SENT);
4321 EXPECT_EQ(balancers_[2]->ads_service()->eds_response_state().state,
4322 AdsServiceImpl::ResponseState::NOT_SENT);
4323 // Kill balancer 0
4324 gpr_log(GPR_INFO, "********** ABOUT TO KILL BALANCER 0 *************");
4325 balancers_[0]->Shutdown();
4326 gpr_log(GPR_INFO, "********** KILLED BALANCER 0 *************");
4327 // This is serviced by the existing child policy.
4328 gpr_log(GPR_INFO, "========= BEFORE SECOND BATCH ==========");
4329 CheckRpcSendOk(10);
4330 gpr_log(GPR_INFO, "========= DONE WITH SECOND BATCH ==========");
4331 // All 10 requests should again have gone to the first backend.
4332 EXPECT_EQ(20U, backends_[0]->backend_service()->request_count());
4333 EXPECT_EQ(0U, backends_[1]->backend_service()->request_count());
4334 // The ADS service of no balancers sent anything
4335 EXPECT_EQ(balancers_[0]->ads_service()->eds_response_state().state,
4336 AdsServiceImpl::ResponseState::NOT_SENT);
4337 EXPECT_EQ(balancers_[1]->ads_service()->eds_response_state().state,
4338 AdsServiceImpl::ResponseState::NOT_SENT);
4339 EXPECT_EQ(balancers_[2]->ads_service()->eds_response_state().state,
4340 AdsServiceImpl::ResponseState::NOT_SENT);
4341 gpr_log(GPR_INFO, "========= ABOUT TO UPDATE 1 ==========");
4342 SetNextResolutionForLbChannel({balancers_[1]->port()});
4343 gpr_log(GPR_INFO, "========= UPDATE 1 DONE ==========");
4344 // Wait until update has been processed, as signaled by the second backend
4345 // receiving a request. In the meantime, the client continues to be serviced
4346 // (by the first backend) without interruption.
4347 EXPECT_EQ(0U, backends_[1]->backend_service()->request_count());
4348 WaitForBackend(1);
4349 // This is serviced by the updated RR policy
4350 backends_[1]->backend_service()->ResetCounters();
4351 gpr_log(GPR_INFO, "========= BEFORE THIRD BATCH ==========");
4352 CheckRpcSendOk(10);
4353 gpr_log(GPR_INFO, "========= DONE WITH THIRD BATCH ==========");
4354 // All 10 requests should have gone to the second backend.
4355 EXPECT_EQ(10U, backends_[1]->backend_service()->request_count());
4356 // The ADS service of balancer 1 sent at least 1 response.
4357 EXPECT_EQ(balancers_[0]->ads_service()->eds_response_state().state,
4358 AdsServiceImpl::ResponseState::NOT_SENT);
4359 EXPECT_GT(balancers_[1]->ads_service()->eds_response_state().state,
4360 AdsServiceImpl::ResponseState::NOT_SENT);
4361 EXPECT_EQ(balancers_[2]->ads_service()->eds_response_state().state,
4362 AdsServiceImpl::ResponseState::NOT_SENT);
4363 }
4364
4365 // The re-resolution tests are deferred because they rely on the fallback mode,
4366 // which hasn't been supported.
4367
4368 // TODO(juanlishen): Add TEST_P(BalancerUpdateTest, ReresolveDeadBackend).
4369
4370 // TODO(juanlishen): Add TEST_P(UpdatesWithClientLoadReportingTest,
4371 // ReresolveDeadBalancer)
4372
4373 class ClientLoadReportingTest : public XdsEnd2endTest {
4374 public:
ClientLoadReportingTest()4375 ClientLoadReportingTest() : XdsEnd2endTest(4, 1, 3) {}
4376 };
4377
4378 // Tests that the load report received at the balancer is correct.
TEST_P(ClientLoadReportingTest,Vanilla)4379 TEST_P(ClientLoadReportingTest, Vanilla) {
4380 SetNextResolution({});
4381 SetNextResolutionForLbChannel({balancers_[0]->port()});
4382 const size_t kNumRpcsPerAddress = 10;
4383 const size_t kNumFailuresPerAddress = 3;
4384 // TODO(juanlishen): Partition the backends after multiple localities is
4385 // tested.
4386 AdsServiceImpl::EdsResourceArgs args({
4387 {"locality0", GetBackendPorts()},
4388 });
4389 balancers_[0]->ads_service()->SetEdsResource(
4390 AdsServiceImpl::BuildEdsResource(args));
4391 // Wait until all backends are ready.
4392 int num_ok = 0;
4393 int num_failure = 0;
4394 int num_drops = 0;
4395 std::tie(num_ok, num_failure, num_drops) = WaitForAllBackends();
4396 // Send kNumRpcsPerAddress RPCs per server.
4397 CheckRpcSendOk(kNumRpcsPerAddress * num_backends_);
4398 CheckRpcSendFailure(kNumFailuresPerAddress * num_backends_,
4399 /*server_fail=*/true);
4400 // Check that each backend got the right number of requests.
4401 for (size_t i = 0; i < backends_.size(); ++i) {
4402 EXPECT_EQ(kNumRpcsPerAddress + kNumFailuresPerAddress,
4403 backends_[i]->backend_service()->request_count());
4404 }
4405 // The load report received at the balancer should be correct.
4406 std::vector<ClientStats> load_report =
4407 balancers_[0]->lrs_service()->WaitForLoadReport();
4408 ASSERT_EQ(load_report.size(), 1UL);
4409 ClientStats& client_stats = load_report.front();
4410 EXPECT_EQ(kNumRpcsPerAddress * num_backends_ + num_ok,
4411 client_stats.total_successful_requests());
4412 EXPECT_EQ(0U, client_stats.total_requests_in_progress());
4413 EXPECT_EQ((kNumRpcsPerAddress + kNumFailuresPerAddress) * num_backends_ +
4414 num_ok + num_failure,
4415 client_stats.total_issued_requests());
4416 EXPECT_EQ(kNumFailuresPerAddress * num_backends_ + num_failure,
4417 client_stats.total_error_requests());
4418 EXPECT_EQ(0U, client_stats.total_dropped_requests());
4419 // The LRS service got a single request, and sent a single response.
4420 EXPECT_EQ(1U, balancers_[0]->lrs_service()->request_count());
4421 EXPECT_EQ(1U, balancers_[0]->lrs_service()->response_count());
4422 }
4423
4424 // Tests send_all_clusters.
TEST_P(ClientLoadReportingTest,SendAllClusters)4425 TEST_P(ClientLoadReportingTest, SendAllClusters) {
4426 balancers_[0]->lrs_service()->set_send_all_clusters(true);
4427 SetNextResolution({});
4428 SetNextResolutionForLbChannel({balancers_[0]->port()});
4429 const size_t kNumRpcsPerAddress = 10;
4430 const size_t kNumFailuresPerAddress = 3;
4431 // TODO(juanlishen): Partition the backends after multiple localities is
4432 // tested.
4433 AdsServiceImpl::EdsResourceArgs args({
4434 {"locality0", GetBackendPorts()},
4435 });
4436 balancers_[0]->ads_service()->SetEdsResource(
4437 AdsServiceImpl::BuildEdsResource(args));
4438 // Wait until all backends are ready.
4439 int num_ok = 0;
4440 int num_failure = 0;
4441 int num_drops = 0;
4442 std::tie(num_ok, num_failure, num_drops) = WaitForAllBackends();
4443 // Send kNumRpcsPerAddress RPCs per server.
4444 CheckRpcSendOk(kNumRpcsPerAddress * num_backends_);
4445 CheckRpcSendFailure(kNumFailuresPerAddress * num_backends_,
4446 /*server_fail=*/true);
4447 // Check that each backend got the right number of requests.
4448 for (size_t i = 0; i < backends_.size(); ++i) {
4449 EXPECT_EQ(kNumRpcsPerAddress + kNumFailuresPerAddress,
4450 backends_[i]->backend_service()->request_count());
4451 }
4452 // The load report received at the balancer should be correct.
4453 std::vector<ClientStats> load_report =
4454 balancers_[0]->lrs_service()->WaitForLoadReport();
4455 ASSERT_EQ(load_report.size(), 1UL);
4456 ClientStats& client_stats = load_report.front();
4457 EXPECT_EQ(kNumRpcsPerAddress * num_backends_ + num_ok,
4458 client_stats.total_successful_requests());
4459 EXPECT_EQ(0U, client_stats.total_requests_in_progress());
4460 EXPECT_EQ((kNumRpcsPerAddress + kNumFailuresPerAddress) * num_backends_ +
4461 num_ok + num_failure,
4462 client_stats.total_issued_requests());
4463 EXPECT_EQ(kNumFailuresPerAddress * num_backends_ + num_failure,
4464 client_stats.total_error_requests());
4465 EXPECT_EQ(0U, client_stats.total_dropped_requests());
4466 // The LRS service got a single request, and sent a single response.
4467 EXPECT_EQ(1U, balancers_[0]->lrs_service()->request_count());
4468 EXPECT_EQ(1U, balancers_[0]->lrs_service()->response_count());
4469 }
4470
4471 // Tests that we don't include stats for clusters that are not requested
4472 // by the LRS server.
TEST_P(ClientLoadReportingTest,HonorsClustersRequestedByLrsServer)4473 TEST_P(ClientLoadReportingTest, HonorsClustersRequestedByLrsServer) {
4474 balancers_[0]->lrs_service()->set_cluster_names({"bogus"});
4475 SetNextResolution({});
4476 SetNextResolutionForLbChannel({balancers_[0]->port()});
4477 const size_t kNumRpcsPerAddress = 100;
4478 AdsServiceImpl::EdsResourceArgs args({
4479 {"locality0", GetBackendPorts()},
4480 });
4481 balancers_[0]->ads_service()->SetEdsResource(
4482 AdsServiceImpl::BuildEdsResource(args));
4483 // Wait until all backends are ready.
4484 int num_ok = 0;
4485 int num_failure = 0;
4486 int num_drops = 0;
4487 std::tie(num_ok, num_failure, num_drops) = WaitForAllBackends();
4488 // Send kNumRpcsPerAddress RPCs per server.
4489 CheckRpcSendOk(kNumRpcsPerAddress * num_backends_);
4490 // Each backend should have gotten 100 requests.
4491 for (size_t i = 0; i < backends_.size(); ++i) {
4492 EXPECT_EQ(kNumRpcsPerAddress,
4493 backends_[i]->backend_service()->request_count());
4494 }
4495 // The LRS service got a single request, and sent a single response.
4496 EXPECT_EQ(1U, balancers_[0]->lrs_service()->request_count());
4497 EXPECT_EQ(1U, balancers_[0]->lrs_service()->response_count());
4498 // The load report received at the balancer should be correct.
4499 std::vector<ClientStats> load_report =
4500 balancers_[0]->lrs_service()->WaitForLoadReport();
4501 ASSERT_EQ(load_report.size(), 0UL);
4502 }
4503
4504 // Tests that if the balancer restarts, the client load report contains the
4505 // stats before and after the restart correctly.
TEST_P(ClientLoadReportingTest,BalancerRestart)4506 TEST_P(ClientLoadReportingTest, BalancerRestart) {
4507 SetNextResolution({});
4508 SetNextResolutionForLbChannel({balancers_[0]->port()});
4509 const size_t kNumBackendsFirstPass = backends_.size() / 2;
4510 const size_t kNumBackendsSecondPass =
4511 backends_.size() - kNumBackendsFirstPass;
4512 AdsServiceImpl::EdsResourceArgs args({
4513 {"locality0", GetBackendPorts(0, kNumBackendsFirstPass)},
4514 });
4515 balancers_[0]->ads_service()->SetEdsResource(
4516 AdsServiceImpl::BuildEdsResource(args));
4517 // Wait until all backends returned by the balancer are ready.
4518 int num_ok = 0;
4519 int num_failure = 0;
4520 int num_drops = 0;
4521 std::tie(num_ok, num_failure, num_drops) =
4522 WaitForAllBackends(/* start_index */ 0,
4523 /* stop_index */ kNumBackendsFirstPass);
4524 std::vector<ClientStats> load_report =
4525 balancers_[0]->lrs_service()->WaitForLoadReport();
4526 ASSERT_EQ(load_report.size(), 1UL);
4527 ClientStats client_stats = std::move(load_report.front());
4528 EXPECT_EQ(static_cast<size_t>(num_ok),
4529 client_stats.total_successful_requests());
4530 EXPECT_EQ(0U, client_stats.total_requests_in_progress());
4531 EXPECT_EQ(0U, client_stats.total_error_requests());
4532 EXPECT_EQ(0U, client_stats.total_dropped_requests());
4533 // Shut down the balancer.
4534 balancers_[0]->Shutdown();
4535 // We should continue using the last EDS response we received from the
4536 // balancer before it was shut down.
4537 // Note: We need to use WaitForAllBackends() here instead of just
4538 // CheckRpcSendOk(kNumBackendsFirstPass), because when the balancer
4539 // shuts down, the XdsClient will generate an error to the
4540 // ServiceConfigWatcher, which will cause the xds resolver to send a
4541 // no-op update to the LB policy. When this update gets down to the
4542 // round_robin child policy for the locality, it will generate a new
4543 // subchannel list, which resets the start index randomly. So we need
4544 // to be a little more permissive here to avoid spurious failures.
4545 ResetBackendCounters();
4546 int num_started = std::get<0>(WaitForAllBackends(
4547 /* start_index */ 0, /* stop_index */ kNumBackendsFirstPass));
4548 // Now restart the balancer, this time pointing to the new backends.
4549 balancers_[0]->Start();
4550 args = AdsServiceImpl::EdsResourceArgs({
4551 {"locality0", GetBackendPorts(kNumBackendsFirstPass)},
4552 });
4553 balancers_[0]->ads_service()->SetEdsResource(
4554 AdsServiceImpl::BuildEdsResource(args));
4555 // Wait for queries to start going to one of the new backends.
4556 // This tells us that we're now using the new serverlist.
4557 std::tie(num_ok, num_failure, num_drops) =
4558 WaitForAllBackends(/* start_index */ kNumBackendsFirstPass);
4559 num_started += num_ok + num_failure + num_drops;
4560 // Send one RPC per backend.
4561 CheckRpcSendOk(kNumBackendsSecondPass);
4562 num_started += kNumBackendsSecondPass;
4563 // Check client stats.
4564 load_report = balancers_[0]->lrs_service()->WaitForLoadReport();
4565 ASSERT_EQ(load_report.size(), 1UL);
4566 client_stats = std::move(load_report.front());
4567 EXPECT_EQ(num_started, client_stats.total_successful_requests());
4568 EXPECT_EQ(0U, client_stats.total_requests_in_progress());
4569 EXPECT_EQ(0U, client_stats.total_error_requests());
4570 EXPECT_EQ(0U, client_stats.total_dropped_requests());
4571 }
4572
4573 class ClientLoadReportingWithDropTest : public XdsEnd2endTest {
4574 public:
ClientLoadReportingWithDropTest()4575 ClientLoadReportingWithDropTest() : XdsEnd2endTest(4, 1, 20) {}
4576 };
4577
4578 // Tests that the drop stats are correctly reported by client load reporting.
TEST_P(ClientLoadReportingWithDropTest,Vanilla)4579 TEST_P(ClientLoadReportingWithDropTest, Vanilla) {
4580 SetNextResolution({});
4581 SetNextResolutionForLbChannelAllBalancers();
4582 const size_t kNumRpcs = 3000;
4583 const uint32_t kDropPerMillionForLb = 100000;
4584 const uint32_t kDropPerMillionForThrottle = 200000;
4585 const double kDropRateForLb = kDropPerMillionForLb / 1000000.0;
4586 const double kDropRateForThrottle = kDropPerMillionForThrottle / 1000000.0;
4587 const double KDropRateForLbAndThrottle =
4588 kDropRateForLb + (1 - kDropRateForLb) * kDropRateForThrottle;
4589 // The ADS response contains two drop categories.
4590 AdsServiceImpl::EdsResourceArgs args({
4591 {"locality0", GetBackendPorts()},
4592 });
4593 args.drop_categories = {{kLbDropType, kDropPerMillionForLb},
4594 {kThrottleDropType, kDropPerMillionForThrottle}};
4595 balancers_[0]->ads_service()->SetEdsResource(
4596 AdsServiceImpl::BuildEdsResource(args));
4597 int num_ok = 0;
4598 int num_failure = 0;
4599 int num_drops = 0;
4600 std::tie(num_ok, num_failure, num_drops) = WaitForAllBackends();
4601 const size_t num_warmup = num_ok + num_failure + num_drops;
4602 // Send kNumRpcs RPCs and count the drops.
4603 for (size_t i = 0; i < kNumRpcs; ++i) {
4604 EchoResponse response;
4605 const Status status = SendRpc(RpcOptions(), &response);
4606 if (!status.ok() &&
4607 status.error_message() == "Call dropped by load balancing policy") {
4608 ++num_drops;
4609 } else {
4610 EXPECT_TRUE(status.ok()) << "code=" << status.error_code()
4611 << " message=" << status.error_message();
4612 EXPECT_EQ(response.message(), kRequestMessage_);
4613 }
4614 }
4615 // The drop rate should be roughly equal to the expectation.
4616 const double seen_drop_rate = static_cast<double>(num_drops) / kNumRpcs;
4617 const double kErrorTolerance = 0.2;
4618 EXPECT_THAT(
4619 seen_drop_rate,
4620 ::testing::AllOf(
4621 ::testing::Ge(KDropRateForLbAndThrottle * (1 - kErrorTolerance)),
4622 ::testing::Le(KDropRateForLbAndThrottle * (1 + kErrorTolerance))));
4623 // Check client stats.
4624 std::vector<ClientStats> load_report =
4625 balancers_[0]->lrs_service()->WaitForLoadReport();
4626 ASSERT_EQ(load_report.size(), 1UL);
4627 ClientStats& client_stats = load_report.front();
4628 EXPECT_EQ(num_drops, client_stats.total_dropped_requests());
4629 const size_t total_rpc = num_warmup + kNumRpcs;
4630 EXPECT_THAT(
4631 client_stats.dropped_requests(kLbDropType),
4632 ::testing::AllOf(
4633 ::testing::Ge(total_rpc * kDropRateForLb * (1 - kErrorTolerance)),
4634 ::testing::Le(total_rpc * kDropRateForLb * (1 + kErrorTolerance))));
4635 EXPECT_THAT(client_stats.dropped_requests(kThrottleDropType),
4636 ::testing::AllOf(
4637 ::testing::Ge(total_rpc * (1 - kDropRateForLb) *
4638 kDropRateForThrottle * (1 - kErrorTolerance)),
4639 ::testing::Le(total_rpc * (1 - kDropRateForLb) *
4640 kDropRateForThrottle * (1 + kErrorTolerance))));
4641 }
4642
TestTypeName(const::testing::TestParamInfo<TestType> & info)4643 grpc::string TestTypeName(const ::testing::TestParamInfo<TestType>& info) {
4644 return info.param.AsString();
4645 }
4646
4647 INSTANTIATE_TEST_SUITE_P(XdsTest, BasicTest,
4648 ::testing::Values(TestType(false, true),
4649 TestType(false, false),
4650 TestType(true, false),
4651 TestType(true, true)),
4652 &TestTypeName);
4653
4654 INSTANTIATE_TEST_SUITE_P(XdsTest, SecureNamingTest,
4655 ::testing::Values(TestType(false, true),
4656 TestType(false, false),
4657 TestType(true, false),
4658 TestType(true, true)),
4659 &TestTypeName);
4660
4661 // LDS depends on XdsResolver.
4662 INSTANTIATE_TEST_SUITE_P(XdsTest, LdsTest,
4663 ::testing::Values(TestType(true, false),
4664 TestType(true, true)),
4665 &TestTypeName);
4666
4667 // LDS RDS Commmon tests depends on XdsResolver.
4668 INSTANTIATE_TEST_SUITE_P(XdsTest, LdsRdsTest,
4669 ::testing::Values(TestType(true, false),
4670 TestType(true, true),
4671 TestType(true, false, true),
4672 TestType(true, true, true)),
4673 &TestTypeName);
4674
4675 // CDS depends on XdsResolver.
4676 INSTANTIATE_TEST_SUITE_P(XdsTest, CdsTest,
4677 ::testing::Values(TestType(true, false),
4678 TestType(true, true)),
4679 &TestTypeName);
4680
4681 // EDS could be tested with or without XdsResolver, but the tests would
4682 // be the same either way, so we test it only with XdsResolver.
4683 INSTANTIATE_TEST_SUITE_P(XdsTest, EdsTest,
4684 ::testing::Values(TestType(true, false),
4685 TestType(true, true)),
4686 &TestTypeName);
4687
4688 // XdsResolverOnlyTest depends on XdsResolver.
4689 INSTANTIATE_TEST_SUITE_P(XdsTest, XdsResolverOnlyTest,
4690 ::testing::Values(TestType(true, false),
4691 TestType(true, true)),
4692 &TestTypeName);
4693
4694 // XdsResolverLoadReprtingOnlyTest depends on XdsResolver and load reporting.
4695 INSTANTIATE_TEST_SUITE_P(XdsTest, XdsResolverLoadReportingOnlyTest,
4696 ::testing::Values(TestType(true, true)),
4697 &TestTypeName);
4698
4699 INSTANTIATE_TEST_SUITE_P(XdsTest, LocalityMapTest,
4700 ::testing::Values(TestType(false, true),
4701 TestType(false, false),
4702 TestType(true, false),
4703 TestType(true, true)),
4704 &TestTypeName);
4705
4706 INSTANTIATE_TEST_SUITE_P(XdsTest, FailoverTest,
4707 ::testing::Values(TestType(false, true),
4708 TestType(false, false),
4709 TestType(true, false),
4710 TestType(true, true)),
4711 &TestTypeName);
4712
4713 INSTANTIATE_TEST_SUITE_P(XdsTest, DropTest,
4714 ::testing::Values(TestType(false, true),
4715 TestType(false, false),
4716 TestType(true, false),
4717 TestType(true, true)),
4718 &TestTypeName);
4719
4720 INSTANTIATE_TEST_SUITE_P(XdsTest, BalancerUpdateTest,
4721 ::testing::Values(TestType(false, true),
4722 TestType(false, false),
4723 TestType(true, true)),
4724 &TestTypeName);
4725
4726 // Load reporting tests are not run with load reporting disabled.
4727 INSTANTIATE_TEST_SUITE_P(XdsTest, ClientLoadReportingTest,
4728 ::testing::Values(TestType(false, true),
4729 TestType(true, true)),
4730 &TestTypeName);
4731
4732 // Load reporting tests are not run with load reporting disabled.
4733 INSTANTIATE_TEST_SUITE_P(XdsTest, ClientLoadReportingWithDropTest,
4734 ::testing::Values(TestType(false, true),
4735 TestType(true, true)),
4736 &TestTypeName);
4737
4738 } // namespace
4739 } // namespace testing
4740 } // namespace grpc
4741
main(int argc,char ** argv)4742 int main(int argc, char** argv) {
4743 grpc::testing::TestEnvironment env(argc, argv);
4744 ::testing::InitGoogleTest(&argc, argv);
4745 grpc::testing::WriteBootstrapFiles();
4746 grpc::testing::g_port_saver = new grpc::testing::PortSaver();
4747 const auto result = RUN_ALL_TESTS();
4748 return result;
4749 }
4750