1 /*
2 *
3 * Copyright 2016 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 <string.h>
20
21 #include <grpc/grpc.h>
22 #include <grpc/support/alloc.h>
23 #include <grpc/support/log.h>
24 #include <grpc/support/string_util.h>
25
26 #include "src/core/lib/channel/channel_args.h"
27 #include "src/core/lib/gprpp/host_port.h"
28 #include "src/core/lib/iomgr/exec_ctx.h"
29 #include "src/core/lib/slice/slice_internal.h"
30 #include "src/core/lib/transport/metadata.h"
31
32 #include "test/core/end2end/cq_verifier.h"
33 #include "test/core/util/port.h"
34 #include "test/core/util/test_config.h"
35
tag(intptr_t i)36 static void* tag(intptr_t i) { return (void*)i; }
37
run_test(bool wait_for_ready,bool use_service_config)38 static void run_test(bool wait_for_ready, bool use_service_config) {
39 grpc_channel* chan;
40 grpc_call* call;
41 grpc_completion_queue* cq;
42 cq_verifier* cqv;
43 grpc_op ops[6];
44 grpc_op* op;
45 grpc_metadata_array trailing_metadata_recv;
46 grpc_status_code status;
47 grpc_slice details;
48
49 gpr_log(GPR_INFO, "TEST: wait_for_ready=%d use_service_config=%d",
50 wait_for_ready, use_service_config);
51
52 grpc_init();
53
54 grpc_metadata_array_init(&trailing_metadata_recv);
55
56 cq = grpc_completion_queue_create_for_next(nullptr);
57 cqv = cq_verifier_create(cq);
58
59 /* if using service config, create channel args */
60 grpc_channel_args* args = nullptr;
61 if (use_service_config) {
62 GPR_ASSERT(wait_for_ready);
63 grpc_arg arg;
64 arg.type = GRPC_ARG_STRING;
65 arg.key = const_cast<char*>(GRPC_ARG_SERVICE_CONFIG);
66 arg.value.string = const_cast<char*>(
67 "{\n"
68 " \"methodConfig\": [ {\n"
69 " \"name\": [\n"
70 " { \"service\": \"service\", \"method\": \"method\" }\n"
71 " ],\n"
72 " \"waitForReady\": true\n"
73 " } ]\n"
74 "}");
75 args = grpc_channel_args_copy_and_add(args, &arg, 1);
76 }
77
78 /* create a call, channel to a port which will refuse connection */
79 int port = grpc_pick_unused_port_or_die();
80 std::string addr = grpc_core::JoinHostPort("127.0.0.1", port);
81 gpr_log(GPR_INFO, "server: %s", addr.c_str());
82 chan = grpc_insecure_channel_create(addr.c_str(), args, nullptr);
83 grpc_slice host = grpc_slice_from_static_string("nonexistant");
84 gpr_timespec deadline = grpc_timeout_seconds_to_deadline(2);
85 call =
86 grpc_channel_create_call(chan, nullptr, GRPC_PROPAGATE_DEFAULTS, cq,
87 grpc_slice_from_static_string("/service/method"),
88 &host, deadline, nullptr);
89
90 memset(ops, 0, sizeof(ops));
91 op = ops;
92 op->op = GRPC_OP_SEND_INITIAL_METADATA;
93 op->data.send_initial_metadata.count = 0;
94 op->flags = (wait_for_ready && !use_service_config)
95 ? GRPC_INITIAL_METADATA_WAIT_FOR_READY
96 : 0;
97 op->reserved = nullptr;
98 op++;
99 op->op = GRPC_OP_RECV_STATUS_ON_CLIENT;
100 op->data.recv_status_on_client.trailing_metadata = &trailing_metadata_recv;
101 op->data.recv_status_on_client.status = &status;
102 op->data.recv_status_on_client.status_details = &details;
103 op->flags = 0;
104 op->reserved = nullptr;
105 op++;
106 GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(call, ops,
107 (size_t)(op - ops), tag(1),
108 nullptr));
109 /* verify that all tags get completed */
110 CQ_EXPECT_COMPLETION(cqv, tag(1), 1);
111 cq_verify(cqv);
112
113 if (wait_for_ready) {
114 GPR_ASSERT(status == GRPC_STATUS_DEADLINE_EXCEEDED);
115 } else {
116 GPR_ASSERT(status == GRPC_STATUS_UNAVAILABLE);
117 }
118
119 grpc_completion_queue_shutdown(cq);
120 while (grpc_completion_queue_next(cq, gpr_inf_future(GPR_CLOCK_REALTIME),
121 nullptr)
122 .type != GRPC_QUEUE_SHUTDOWN)
123 ;
124 grpc_completion_queue_destroy(cq);
125 grpc_call_unref(call);
126 grpc_channel_destroy(chan);
127 cq_verifier_destroy(cqv);
128
129 grpc_slice_unref(details);
130 grpc_metadata_array_destroy(&trailing_metadata_recv);
131
132 {
133 grpc_core::ExecCtx exec_ctx;
134 if (args != nullptr) grpc_channel_args_destroy(args);
135 }
136
137 grpc_shutdown();
138 }
139
main(int argc,char ** argv)140 int main(int argc, char** argv) {
141 grpc::testing::TestEnvironment env(argc, argv);
142 run_test(false /* wait_for_ready */, false /* use_service_config */);
143 run_test(true /* wait_for_ready */, false /* use_service_config */);
144 run_test(true /* wait_for_ready */, true /* use_service_config */);
145 return 0;
146 }
147