1 /*
2 *
3 * Copyright 2015 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 <grpc/grpc.h>
20 #include <grpc/grpc_security.h>
21
22 #include <signal.h>
23 #include <stdio.h>
24 #include <stdlib.h>
25 #include <string.h>
26 #include <time.h>
27 #ifndef _WIN32
28 /* This is for _exit() below, which is temporary. */
29 #include <unistd.h>
30 #endif
31
32 #include <grpc/support/alloc.h>
33 #include <grpc/support/log.h>
34 #include <grpc/support/time.h>
35
36 #include "src/core/lib/gpr/host_port.h"
37 #include "src/core/lib/profiling/timers.h"
38 #include "test/core/end2end/data/ssl_test_data.h"
39 #include "test/core/util/cmdline.h"
40 #include "test/core/util/grpc_profiler.h"
41 #include "test/core/util/port.h"
42 #include "test/core/util/test_config.h"
43
44 static grpc_completion_queue* cq;
45 static grpc_server* server;
46 static grpc_call* call;
47 static grpc_call_details call_details;
48 static grpc_metadata_array request_metadata_recv;
49 static grpc_metadata_array initial_metadata_send;
50 static grpc_byte_buffer* payload_buffer = nullptr;
51 /* Used to drain the terminal read in unary calls. */
52 static grpc_byte_buffer* terminal_buffer = nullptr;
53
54 static grpc_op read_op;
55 static grpc_op metadata_send_op;
56 static grpc_op write_op;
57 static grpc_op status_op[2];
58 static int was_cancelled = 2;
59 static grpc_op unary_ops[6];
60 static int got_sigint = 0;
61
tag(intptr_t t)62 static void* tag(intptr_t t) { return (void*)t; }
63
64 typedef enum {
65 FLING_SERVER_NEW_REQUEST = 1,
66 FLING_SERVER_READ_FOR_UNARY,
67 FLING_SERVER_BATCH_OPS_FOR_UNARY,
68 FLING_SERVER_SEND_INIT_METADATA_FOR_STREAMING,
69 FLING_SERVER_READ_FOR_STREAMING,
70 FLING_SERVER_WRITE_FOR_STREAMING,
71 FLING_SERVER_SEND_STATUS_FOR_STREAMING
72 } fling_server_tags;
73
74 typedef struct {
75 gpr_refcount pending_ops;
76 uint32_t flags;
77 } call_state;
78
request_call(void)79 static void request_call(void) {
80 grpc_metadata_array_init(&request_metadata_recv);
81 GPR_ASSERT(GRPC_CALL_OK ==
82 grpc_server_request_call(server, &call, &call_details,
83 &request_metadata_recv, cq, cq,
84 tag(FLING_SERVER_NEW_REQUEST)));
85 }
86
handle_unary_method(void)87 static void handle_unary_method(void) {
88 grpc_op* op;
89 grpc_call_error error;
90
91 grpc_metadata_array_init(&initial_metadata_send);
92
93 op = unary_ops;
94 op->op = GRPC_OP_SEND_INITIAL_METADATA;
95 op->data.send_initial_metadata.count = 0;
96 op++;
97 op->op = GRPC_OP_RECV_MESSAGE;
98 op->data.recv_message.recv_message = &terminal_buffer;
99 op++;
100 op->op = GRPC_OP_SEND_MESSAGE;
101 if (payload_buffer == nullptr) {
102 gpr_log(GPR_INFO, "NULL payload buffer !!!");
103 }
104 op->data.send_message.send_message = payload_buffer;
105 op++;
106 op->op = GRPC_OP_SEND_STATUS_FROM_SERVER;
107 op->data.send_status_from_server.status = GRPC_STATUS_OK;
108 op->data.send_status_from_server.trailing_metadata_count = 0;
109 op->data.send_status_from_server.status_details = nullptr;
110 op++;
111 op->op = GRPC_OP_RECV_CLOSE_ON_SERVER;
112 op->data.recv_close_on_server.cancelled = &was_cancelled;
113 op++;
114
115 error = grpc_call_start_batch(call, unary_ops,
116 static_cast<size_t>(op - unary_ops),
117 tag(FLING_SERVER_BATCH_OPS_FOR_UNARY), nullptr);
118 GPR_ASSERT(GRPC_CALL_OK == error);
119 }
120
send_initial_metadata(void)121 static void send_initial_metadata(void) {
122 grpc_call_error error;
123 void* tagarg = tag(FLING_SERVER_SEND_INIT_METADATA_FOR_STREAMING);
124 grpc_metadata_array_init(&initial_metadata_send);
125 metadata_send_op.op = GRPC_OP_SEND_INITIAL_METADATA;
126 metadata_send_op.data.send_initial_metadata.count = 0;
127 error = grpc_call_start_batch(call, &metadata_send_op, 1, tagarg, nullptr);
128
129 GPR_ASSERT(GRPC_CALL_OK == error);
130 }
131
start_read_op(int t)132 static void start_read_op(int t) {
133 grpc_call_error error;
134 /* Starting read at server */
135 read_op.op = GRPC_OP_RECV_MESSAGE;
136 read_op.data.recv_message.recv_message = &payload_buffer;
137 error = grpc_call_start_batch(call, &read_op, 1, tag(t), nullptr);
138 GPR_ASSERT(GRPC_CALL_OK == error);
139 }
140
start_write_op(void)141 static void start_write_op(void) {
142 grpc_call_error error;
143 void* tagarg = tag(FLING_SERVER_WRITE_FOR_STREAMING);
144 /* Starting write at server */
145 write_op.op = GRPC_OP_SEND_MESSAGE;
146 if (payload_buffer == nullptr) {
147 gpr_log(GPR_INFO, "NULL payload buffer !!!");
148 }
149 write_op.data.send_message.send_message = payload_buffer;
150 error = grpc_call_start_batch(call, &write_op, 1, tagarg, nullptr);
151 GPR_ASSERT(GRPC_CALL_OK == error);
152 }
153
start_send_status(void)154 static void start_send_status(void) {
155 grpc_call_error error;
156 void* tagarg = tag(FLING_SERVER_SEND_STATUS_FOR_STREAMING);
157 status_op[0].op = GRPC_OP_SEND_STATUS_FROM_SERVER;
158 status_op[0].data.send_status_from_server.status = GRPC_STATUS_OK;
159 status_op[0].data.send_status_from_server.trailing_metadata_count = 0;
160 status_op[0].data.send_status_from_server.status_details = nullptr;
161 status_op[1].op = GRPC_OP_RECV_CLOSE_ON_SERVER;
162 status_op[1].data.recv_close_on_server.cancelled = &was_cancelled;
163
164 error = grpc_call_start_batch(call, status_op, 2, tagarg, nullptr);
165 GPR_ASSERT(GRPC_CALL_OK == error);
166 }
167
168 /* We have some sort of deadlock, so let's not exit gracefully for now.
169 When that is resolved, please remove the #include <unistd.h> above. */
sigint_handler(int x)170 static void sigint_handler(int x) { _exit(0); }
171
main(int argc,char ** argv)172 int main(int argc, char** argv) {
173 grpc_event ev;
174 call_state* s;
175 char* addr_buf = nullptr;
176 gpr_cmdline* cl;
177 grpc_completion_queue* shutdown_cq;
178 int shutdown_started = 0;
179 int shutdown_finished = 0;
180
181 int secure = 0;
182 const char* addr = nullptr;
183
184 char* fake_argv[1];
185
186 gpr_timers_set_log_filename("latency_trace.fling_server.txt");
187
188 GPR_ASSERT(argc >= 1);
189 fake_argv[0] = argv[0];
190 grpc_test_init(1, fake_argv);
191
192 grpc_init();
193 srand(static_cast<unsigned>(clock()));
194
195 cl = gpr_cmdline_create("fling server");
196 gpr_cmdline_add_string(cl, "bind", "Bind host:port", &addr);
197 gpr_cmdline_add_flag(cl, "secure", "Run with security?", &secure);
198 gpr_cmdline_parse(cl, argc, argv);
199 gpr_cmdline_destroy(cl);
200
201 if (addr == nullptr) {
202 gpr_join_host_port(&addr_buf, "::", grpc_pick_unused_port_or_die());
203 addr = addr_buf;
204 }
205 gpr_log(GPR_INFO, "creating server on: %s", addr);
206
207 cq = grpc_completion_queue_create_for_next(nullptr);
208 if (secure) {
209 grpc_ssl_pem_key_cert_pair pem_key_cert_pair = {test_server1_key,
210 test_server1_cert};
211 grpc_server_credentials* ssl_creds = grpc_ssl_server_credentials_create(
212 nullptr, &pem_key_cert_pair, 1, 0, nullptr);
213 server = grpc_server_create(nullptr, nullptr);
214 GPR_ASSERT(grpc_server_add_secure_http2_port(server, addr, ssl_creds));
215 grpc_server_credentials_release(ssl_creds);
216 } else {
217 server = grpc_server_create(nullptr, nullptr);
218 GPR_ASSERT(grpc_server_add_insecure_http2_port(server, addr));
219 }
220 grpc_server_register_completion_queue(server, cq, nullptr);
221 grpc_server_start(server);
222
223 gpr_free(addr_buf);
224 addr = addr_buf = nullptr;
225
226 grpc_call_details_init(&call_details);
227
228 request_call();
229
230 grpc_profiler_start("server.prof");
231 signal(SIGINT, sigint_handler);
232 while (!shutdown_finished) {
233 if (got_sigint && !shutdown_started) {
234 gpr_log(GPR_INFO, "Shutting down due to SIGINT");
235
236 shutdown_cq = grpc_completion_queue_create_for_pluck(nullptr);
237 grpc_server_shutdown_and_notify(server, shutdown_cq, tag(1000));
238
239 GPR_ASSERT(grpc_completion_queue_pluck(
240 shutdown_cq, tag(1000),
241 grpc_timeout_seconds_to_deadline(5), nullptr)
242 .type == GRPC_OP_COMPLETE);
243 grpc_completion_queue_destroy(shutdown_cq);
244
245 grpc_completion_queue_shutdown(cq);
246 shutdown_started = 1;
247 }
248 ev = grpc_completion_queue_next(
249 cq,
250 gpr_time_add(gpr_now(GPR_CLOCK_REALTIME),
251 gpr_time_from_micros(1000000, GPR_TIMESPAN)),
252 nullptr);
253 s = static_cast<call_state*>(ev.tag);
254 switch (ev.type) {
255 case GRPC_OP_COMPLETE:
256 switch ((intptr_t)s) {
257 case FLING_SERVER_NEW_REQUEST:
258 if (call != nullptr) {
259 if (0 == grpc_slice_str_cmp(call_details.method,
260 "/Reflector/reflectStream")) {
261 /* Received streaming call. Send metadata here. */
262 start_read_op(FLING_SERVER_READ_FOR_STREAMING);
263 send_initial_metadata();
264 } else {
265 /* Received unary call. Can do all ops in one batch. */
266 start_read_op(FLING_SERVER_READ_FOR_UNARY);
267 }
268 } else {
269 GPR_ASSERT(shutdown_started);
270 }
271 /* request_call();
272 */
273 break;
274 case FLING_SERVER_READ_FOR_STREAMING:
275 if (payload_buffer != nullptr) {
276 /* Received payload from client. */
277 start_write_op();
278 } else {
279 /* Received end of stream from client. */
280 start_send_status();
281 }
282 break;
283 case FLING_SERVER_WRITE_FOR_STREAMING:
284 /* Write completed at server */
285 grpc_byte_buffer_destroy(payload_buffer);
286 payload_buffer = nullptr;
287 start_read_op(FLING_SERVER_READ_FOR_STREAMING);
288 break;
289 case FLING_SERVER_SEND_INIT_METADATA_FOR_STREAMING:
290 /* Metadata send completed at server */
291 break;
292 case FLING_SERVER_SEND_STATUS_FOR_STREAMING:
293 /* Send status and close completed at server */
294 grpc_call_unref(call);
295 if (!shutdown_started) request_call();
296 break;
297 case FLING_SERVER_READ_FOR_UNARY:
298 /* Finished payload read for unary. Start all reamaining
299 * unary ops in a batch.
300 */
301 handle_unary_method();
302 break;
303 case FLING_SERVER_BATCH_OPS_FOR_UNARY:
304 /* Finished unary call. */
305 grpc_byte_buffer_destroy(payload_buffer);
306 payload_buffer = nullptr;
307 grpc_call_unref(call);
308 if (!shutdown_started) request_call();
309 break;
310 }
311 break;
312 case GRPC_QUEUE_SHUTDOWN:
313 GPR_ASSERT(shutdown_started);
314 shutdown_finished = 1;
315 break;
316 case GRPC_QUEUE_TIMEOUT:
317 break;
318 }
319 }
320 grpc_profiler_stop();
321 grpc_call_details_destroy(&call_details);
322
323 grpc_server_destroy(server);
324 grpc_completion_queue_destroy(cq);
325 grpc_shutdown();
326 return 0;
327 }
328