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 <grpcpp/impl/codegen/config.h>
20 #include <gtest/gtest.h>
21
22 #include <grpcpp/server.h>
23 #include <grpcpp/server_builder.h>
24
25 #include <grpc/grpc.h>
26 #include <memory>
27
28 #include "src/core/lib/iomgr/socket_mutator.h"
29 #include "src/proto/grpc/testing/echo.grpc.pb.h"
30 #include "test/core/util/port.h"
31
32 /* This test does a sanity check that grpc_socket_mutator's
33 * are used by servers. It's meant to protect code and end-to-end
34 * tests that rely on this functionality but which live outside
35 * of the grpc github repo. */
36
37 namespace grpc {
38 namespace {
39
40 bool mock_socket_mutator_mutate_fd(int, grpc_socket_mutator*);
41 int mock_socket_mutator_compare(grpc_socket_mutator*, grpc_socket_mutator*);
42 void mock_socket_mutator_destroy(grpc_socket_mutator*);
43
44 const grpc_socket_mutator_vtable mock_socket_mutator_vtable = {
45 mock_socket_mutator_mutate_fd,
46 mock_socket_mutator_compare,
47 mock_socket_mutator_destroy,
48 };
49
50 class MockSocketMutator : public grpc_socket_mutator {
51 public:
MockSocketMutator()52 MockSocketMutator() : mutate_fd_call_count_(0) {
53 grpc_socket_mutator_init(this, &mock_socket_mutator_vtable);
54 }
55 int mutate_fd_call_count_;
56 };
57
mock_socket_mutator_mutate_fd(int fd,grpc_socket_mutator * m)58 bool mock_socket_mutator_mutate_fd(int fd, grpc_socket_mutator* m) {
59 MockSocketMutator* s = reinterpret_cast<MockSocketMutator*>(m);
60 s->mutate_fd_call_count_++;
61 return true;
62 }
63
mock_socket_mutator_compare(grpc_socket_mutator * a,grpc_socket_mutator * b)64 int mock_socket_mutator_compare(grpc_socket_mutator* a,
65 grpc_socket_mutator* b) {
66 return (uintptr_t)a - (uintptr_t)b;
67 }
68
mock_socket_mutator_destroy(grpc_socket_mutator * m)69 void mock_socket_mutator_destroy(grpc_socket_mutator* m) {
70 MockSocketMutator* s = reinterpret_cast<MockSocketMutator*>(m);
71 delete s;
72 }
73
74 class MockSocketMutatorServerBuilderOption : public grpc::ServerBuilderOption {
75 public:
MockSocketMutatorServerBuilderOption(MockSocketMutator * mock_socket_mutator)76 MockSocketMutatorServerBuilderOption(MockSocketMutator* mock_socket_mutator)
77 : mock_socket_mutator_(mock_socket_mutator) {}
78
UpdateArguments(ChannelArguments * args)79 void UpdateArguments(ChannelArguments* args) override {
80 args->SetSocketMutator(mock_socket_mutator_);
81 }
82
UpdatePlugins(std::vector<std::unique_ptr<ServerBuilderPlugin>> *)83 void UpdatePlugins(
84 std::vector<std::unique_ptr<ServerBuilderPlugin>>*) override{};
85
86 MockSocketMutator* mock_socket_mutator_;
87 };
88
89 class ServerBuilderWithSocketMutatorTest : public ::testing::Test {
90 protected:
SetUpTestCase()91 static void SetUpTestCase() { grpc_init(); }
92
TearDownTestCase()93 static void TearDownTestCase() { grpc_shutdown(); }
94 };
95
TEST_F(ServerBuilderWithSocketMutatorTest,CreateServerWithSocketMutator)96 TEST_F(ServerBuilderWithSocketMutatorTest, CreateServerWithSocketMutator) {
97 auto address = "localhost:" + std::to_string(grpc_pick_unused_port_or_die());
98 auto mock_socket_mutator = new MockSocketMutator();
99 std::unique_ptr<grpc::ServerBuilderOption> mock_socket_mutator_builder_option(
100 new MockSocketMutatorServerBuilderOption(mock_socket_mutator));
101 testing::EchoTestService::Service echo_service;
102 EXPECT_EQ(mock_socket_mutator->mutate_fd_call_count_, 0);
103 ServerBuilder builder;
104 builder.RegisterService(&echo_service);
105 builder.AddListeningPort(address, InsecureServerCredentials());
106 builder.SetOption(std::move(mock_socket_mutator_builder_option));
107 std::unique_ptr<grpc::Server> server(builder.BuildAndStart());
108 EXPECT_NE(server, nullptr);
109 // Only assert that the socket mutator was used.
110 EXPECT_GE(mock_socket_mutator->mutate_fd_call_count_, 1);
111 server->Shutdown();
112 }
113
114 } // namespace
115 } // namespace grpc
116
main(int argc,char ** argv)117 int main(int argc, char** argv) {
118 ::testing::InitGoogleTest(&argc, argv);
119 int ret = RUN_ALL_TESTS();
120 return ret;
121 }
122