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 <stdio.h>
20 #include <string.h>
21
22 #include <grpc/byte_buffer.h>
23 #include <grpc/grpc.h>
24 #include <grpc/support/alloc.h>
25 #include <grpc/support/log.h>
26 #include <grpc/support/string_util.h>
27 #include <grpc/support/time.h>
28
29 #include "src/core/lib/channel/channel_args.h"
30 #include "src/core/lib/gpr/string.h"
31 #include "src/core/lib/gpr/useful.h"
32 #include "src/core/lib/iomgr/exec_ctx.h"
33 #include "src/core/lib/transport/static_metadata.h"
34 #include "test/core/end2end/cq_verifier.h"
35 #include "test/core/end2end/end2end_tests.h"
36 #include "test/core/end2end/tests/cancel_test_helpers.h"
37
tag(intptr_t t)38 static void* tag(intptr_t t) { return reinterpret_cast<void*>(t); }
39
begin_test(grpc_end2end_test_config config,const char * test_name,grpc_channel_args * client_args,grpc_channel_args * server_args)40 static grpc_end2end_test_fixture begin_test(grpc_end2end_test_config config,
41 const char* test_name,
42 grpc_channel_args* client_args,
43 grpc_channel_args* server_args) {
44 grpc_end2end_test_fixture f;
45 gpr_log(GPR_INFO, "Running test: %s/%s", test_name, config.name);
46 f = config.create_fixture(client_args, server_args);
47 config.init_server(&f, server_args);
48 config.init_client(&f, client_args);
49 return f;
50 }
51
n_seconds_from_now(int n)52 static gpr_timespec n_seconds_from_now(int n) {
53 return grpc_timeout_seconds_to_deadline(n);
54 }
55
five_seconds_from_now(void)56 static gpr_timespec five_seconds_from_now(void) {
57 return n_seconds_from_now(5);
58 }
59
drain_cq(grpc_completion_queue * cq)60 static void drain_cq(grpc_completion_queue* cq) {
61 grpc_event ev;
62 do {
63 ev = grpc_completion_queue_next(cq, five_seconds_from_now(), nullptr);
64 } while (ev.type != GRPC_QUEUE_SHUTDOWN);
65 }
66
shutdown_server(grpc_end2end_test_fixture * f)67 static void shutdown_server(grpc_end2end_test_fixture* f) {
68 if (!f->server) return;
69 grpc_server_shutdown_and_notify(f->server, f->shutdown_cq, tag(1000));
70 GPR_ASSERT(grpc_completion_queue_pluck(f->shutdown_cq, tag(1000),
71 grpc_timeout_seconds_to_deadline(5),
72 nullptr)
73 .type == GRPC_OP_COMPLETE);
74 grpc_server_destroy(f->server);
75 f->server = nullptr;
76 }
77
shutdown_client(grpc_end2end_test_fixture * f)78 static void shutdown_client(grpc_end2end_test_fixture* f) {
79 if (!f->client) return;
80 grpc_channel_destroy(f->client);
81 f->client = nullptr;
82 }
83
end_test(grpc_end2end_test_fixture * f)84 static void end_test(grpc_end2end_test_fixture* f) {
85 shutdown_server(f);
86 shutdown_client(f);
87
88 grpc_completion_queue_shutdown(f->cq);
89 drain_cq(f->cq);
90 grpc_completion_queue_destroy(f->cq);
91 grpc_completion_queue_destroy(f->shutdown_cq);
92 }
93
94 // Tests that we don't retry when retries are disabled via the
95 // GRPC_ARG_ENABLE_RETRIES channel arg, even when there is retry
96 // configuration in the service config.
97 // - 1 retry allowed for ABORTED status
98 // - first attempt returns ABORTED but does not retry
test_retry_disabled(grpc_end2end_test_config config)99 static void test_retry_disabled(grpc_end2end_test_config config) {
100 grpc_call* c;
101 grpc_call* s;
102 grpc_op ops[6];
103 grpc_op* op;
104 grpc_metadata_array initial_metadata_recv;
105 grpc_metadata_array trailing_metadata_recv;
106 grpc_metadata_array request_metadata_recv;
107 grpc_call_details call_details;
108 grpc_slice request_payload_slice = grpc_slice_from_static_string("foo");
109 grpc_slice response_payload_slice = grpc_slice_from_static_string("bar");
110 grpc_byte_buffer* request_payload =
111 grpc_raw_byte_buffer_create(&request_payload_slice, 1);
112 grpc_byte_buffer* response_payload =
113 grpc_raw_byte_buffer_create(&response_payload_slice, 1);
114 grpc_byte_buffer* request_payload_recv = nullptr;
115 grpc_byte_buffer* response_payload_recv = nullptr;
116 grpc_status_code status;
117 grpc_call_error error;
118 grpc_slice details;
119 int was_cancelled = 2;
120 char* peer;
121
122 grpc_arg args[] = {
123 grpc_channel_arg_integer_create(
124 const_cast<char*>(GRPC_ARG_ENABLE_RETRIES), 0),
125 grpc_channel_arg_string_create(
126 const_cast<char*>(GRPC_ARG_SERVICE_CONFIG),
127 const_cast<char*>(
128 "{\n"
129 " \"methodConfig\": [ {\n"
130 " \"name\": [\n"
131 " { \"service\": \"service\", \"method\": \"method\" }\n"
132 " ],\n"
133 " \"retryPolicy\": {\n"
134 " \"maxAttempts\": 2,\n"
135 " \"initialBackoff\": \"1s\",\n"
136 " \"maxBackoff\": \"120s\",\n"
137 " \"backoffMultiplier\": 1.6,\n"
138 " \"retryableStatusCodes\": [ \"ABORTED\" ]\n"
139 " }\n"
140 " } ]\n"
141 "}")),
142 };
143 grpc_channel_args client_args = {GPR_ARRAY_SIZE(args), args};
144 grpc_end2end_test_fixture f =
145 begin_test(config, "retry_disabled", &client_args, nullptr);
146
147 cq_verifier* cqv = cq_verifier_create(f.cq);
148
149 gpr_timespec deadline = five_seconds_from_now();
150 c = grpc_channel_create_call(f.client, nullptr, GRPC_PROPAGATE_DEFAULTS, f.cq,
151 grpc_slice_from_static_string("/service/method"),
152 nullptr, deadline, nullptr);
153 GPR_ASSERT(c);
154
155 peer = grpc_call_get_peer(c);
156 GPR_ASSERT(peer != nullptr);
157 gpr_log(GPR_DEBUG, "client_peer_before_call=%s", peer);
158 gpr_free(peer);
159
160 grpc_metadata_array_init(&initial_metadata_recv);
161 grpc_metadata_array_init(&trailing_metadata_recv);
162 grpc_metadata_array_init(&request_metadata_recv);
163 grpc_call_details_init(&call_details);
164 grpc_slice status_details = grpc_slice_from_static_string("xyz");
165
166 memset(ops, 0, sizeof(ops));
167 op = ops;
168 op->op = GRPC_OP_SEND_INITIAL_METADATA;
169 op->data.send_initial_metadata.count = 0;
170 op++;
171 op->op = GRPC_OP_SEND_MESSAGE;
172 op->data.send_message.send_message = request_payload;
173 op++;
174 op->op = GRPC_OP_RECV_MESSAGE;
175 op->data.recv_message.recv_message = &response_payload_recv;
176 op++;
177 op->op = GRPC_OP_SEND_CLOSE_FROM_CLIENT;
178 op++;
179 op->op = GRPC_OP_RECV_INITIAL_METADATA;
180 op->data.recv_initial_metadata.recv_initial_metadata = &initial_metadata_recv;
181 op++;
182 op->op = GRPC_OP_RECV_STATUS_ON_CLIENT;
183 op->data.recv_status_on_client.trailing_metadata = &trailing_metadata_recv;
184 op->data.recv_status_on_client.status = &status;
185 op->data.recv_status_on_client.status_details = &details;
186 op++;
187 error = grpc_call_start_batch(c, ops, static_cast<size_t>(op - ops), tag(1),
188 nullptr);
189 GPR_ASSERT(GRPC_CALL_OK == error);
190
191 error =
192 grpc_server_request_call(f.server, &s, &call_details,
193 &request_metadata_recv, f.cq, f.cq, tag(101));
194 GPR_ASSERT(GRPC_CALL_OK == error);
195 CQ_EXPECT_COMPLETION(cqv, tag(101), true);
196 cq_verify(cqv);
197
198 peer = grpc_call_get_peer(s);
199 GPR_ASSERT(peer != nullptr);
200 gpr_log(GPR_DEBUG, "server_peer=%s", peer);
201 gpr_free(peer);
202 peer = grpc_call_get_peer(c);
203 GPR_ASSERT(peer != nullptr);
204 gpr_log(GPR_DEBUG, "client_peer=%s", peer);
205 gpr_free(peer);
206
207 memset(ops, 0, sizeof(ops));
208 op = ops;
209 op->op = GRPC_OP_SEND_INITIAL_METADATA;
210 op->data.send_initial_metadata.count = 0;
211 op++;
212 op->op = GRPC_OP_SEND_STATUS_FROM_SERVER;
213 op->data.send_status_from_server.trailing_metadata_count = 0;
214 op->data.send_status_from_server.status = GRPC_STATUS_ABORTED;
215 op->data.send_status_from_server.status_details = &status_details;
216 op++;
217 op->op = GRPC_OP_RECV_CLOSE_ON_SERVER;
218 op->data.recv_close_on_server.cancelled = &was_cancelled;
219 op++;
220 error = grpc_call_start_batch(s, ops, static_cast<size_t>(op - ops), tag(102),
221 nullptr);
222 GPR_ASSERT(GRPC_CALL_OK == error);
223
224 CQ_EXPECT_COMPLETION(cqv, tag(102), true);
225 CQ_EXPECT_COMPLETION(cqv, tag(1), true);
226 cq_verify(cqv);
227
228 GPR_ASSERT(status == GRPC_STATUS_ABORTED);
229 GPR_ASSERT(0 == grpc_slice_str_cmp(details, "xyz"));
230 GPR_ASSERT(0 == grpc_slice_str_cmp(call_details.method, "/service/method"));
231 GPR_ASSERT(0 == call_details.flags);
232 GPR_ASSERT(was_cancelled == 0);
233
234 grpc_slice_unref(details);
235 grpc_metadata_array_destroy(&initial_metadata_recv);
236 grpc_metadata_array_destroy(&trailing_metadata_recv);
237 grpc_metadata_array_destroy(&request_metadata_recv);
238 grpc_call_details_destroy(&call_details);
239 grpc_byte_buffer_destroy(request_payload);
240 grpc_byte_buffer_destroy(response_payload);
241 grpc_byte_buffer_destroy(request_payload_recv);
242 grpc_byte_buffer_destroy(response_payload_recv);
243
244 grpc_call_unref(c);
245 grpc_call_unref(s);
246
247 cq_verifier_destroy(cqv);
248
249 end_test(&f);
250 config.tear_down_data(&f);
251 }
252
retry_disabled(grpc_end2end_test_config config)253 void retry_disabled(grpc_end2end_test_config config) {
254 GPR_ASSERT(config.feature_mask & FEATURE_MASK_SUPPORTS_CLIENT_CHANNEL);
255 test_retry_disabled(config);
256 }
257
retry_disabled_pre_init(void)258 void retry_disabled_pre_init(void) {}
259