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grpc/test/core/fling/server.c

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/*
*
* Copyright 2015, Google Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#include <grpc/grpc.h>
#include <grpc/grpc_security.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#ifndef _WIN32
/* This is for _exit() below, which is temporary. */
#include <unistd.h>
#endif
#include "test/core/util/grpc_profiler.h"
#include "test/core/util/test_config.h"
#include <grpc/support/alloc.h>
#include <grpc/support/cmdline.h>
#include <grpc/support/host_port.h>
#include <grpc/support/log.h>
#include <grpc/support/time.h>
#include "test/core/util/port.h"
#include "test/core/end2end/data/ssl_test_data.h"
static grpc_completion_queue *cq;
static grpc_server *server;
static grpc_call *call;
static grpc_call_details call_details;
static grpc_metadata_array request_metadata_recv;
static grpc_metadata_array initial_metadata_send;
static grpc_byte_buffer *payload_buffer = NULL;
/* Used to drain the terminal read in unary calls. */
static grpc_byte_buffer *terminal_buffer = NULL;
static grpc_op read_op;
static grpc_op metadata_send_op;
static grpc_op write_op;
static grpc_op status_op[2];
static int was_cancelled = 2;
static grpc_op unary_ops[6];
static int got_sigint = 0;
static void *tag(gpr_intptr t) { return (void *)t; }
typedef enum {
FLING_SERVER_NEW_REQUEST = 1,
FLING_SERVER_READ_FOR_UNARY,
FLING_SERVER_BATCH_OPS_FOR_UNARY,
FLING_SERVER_SEND_INIT_METADATA_FOR_STREAMING,
FLING_SERVER_READ_FOR_STREAMING,
FLING_SERVER_WRITE_FOR_STREAMING,
FLING_SERVER_SEND_STATUS_FOR_STREAMING
} fling_server_tags;
typedef struct {
gpr_refcount pending_ops;
gpr_uint32 flags;
} call_state;
static void request_call(void) {
grpc_metadata_array_init(&request_metadata_recv);
grpc_server_request_call(server, &call, &call_details, &request_metadata_recv,
cq, cq, tag(FLING_SERVER_NEW_REQUEST));
}
static void handle_unary_method(void) {
grpc_op *op;
grpc_metadata_array_init(&initial_metadata_send);
op = unary_ops;
op->op = GRPC_OP_SEND_INITIAL_METADATA;
op->data.send_initial_metadata.count = 0;
op++;
op->op = GRPC_OP_RECV_MESSAGE;
op->data.recv_message = &terminal_buffer;
op++;
op->op = GRPC_OP_SEND_MESSAGE;
if (payload_buffer == NULL) {
gpr_log(GPR_INFO, "NULL payload buffer !!!");
}
op->data.send_message = payload_buffer;
op++;
op->op = GRPC_OP_SEND_STATUS_FROM_SERVER;
op->data.send_status_from_server.status = GRPC_STATUS_OK;
op->data.send_status_from_server.trailing_metadata_count = 0;
op->data.send_status_from_server.status_details = "";
op++;
op->op = GRPC_OP_RECV_CLOSE_ON_SERVER;
op->data.recv_close_on_server.cancelled = &was_cancelled;
op++;
GPR_ASSERT(GRPC_CALL_OK ==
grpc_call_start_batch(call, unary_ops, op - unary_ops,
tag(FLING_SERVER_BATCH_OPS_FOR_UNARY)));
}
static void send_initial_metadata(void) {
grpc_metadata_array_init(&initial_metadata_send);
metadata_send_op.op = GRPC_OP_SEND_INITIAL_METADATA;
metadata_send_op.data.send_initial_metadata.count = 0;
GPR_ASSERT(GRPC_CALL_OK ==
grpc_call_start_batch(
call, &metadata_send_op, 1,
tag(FLING_SERVER_SEND_INIT_METADATA_FOR_STREAMING)));
}
static void start_read_op(int t) {
/* Starting read at server */
read_op.op = GRPC_OP_RECV_MESSAGE;
read_op.data.recv_message = &payload_buffer;
GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(call, &read_op, 1, tag(t)));
}
static void start_write_op(void) {
/* Starting write at server */
write_op.op = GRPC_OP_SEND_MESSAGE;
if (payload_buffer == NULL) {
gpr_log(GPR_INFO, "NULL payload buffer !!!");
}
write_op.data.send_message = payload_buffer;
GPR_ASSERT(GRPC_CALL_OK ==
grpc_call_start_batch(call, &write_op, 1,
tag(FLING_SERVER_WRITE_FOR_STREAMING)));
}
static void start_send_status(void) {
status_op[0].op = GRPC_OP_SEND_STATUS_FROM_SERVER;
status_op[0].data.send_status_from_server.status = GRPC_STATUS_OK;
status_op[0].data.send_status_from_server.trailing_metadata_count = 0;
status_op[0].data.send_status_from_server.status_details = "";
status_op[1].op = GRPC_OP_RECV_CLOSE_ON_SERVER;
status_op[1].data.recv_close_on_server.cancelled = &was_cancelled;
GPR_ASSERT(GRPC_CALL_OK == grpc_call_start_batch(
call, status_op, 2,
tag(FLING_SERVER_SEND_STATUS_FOR_STREAMING)));
}
/* We have some sort of deadlock, so let's not exit gracefully for now.
When that is resolved, please remove the #include <unistd.h> above. */
static void sigint_handler(int x) { _exit(0); }
int main(int argc, char **argv) {
grpc_event ev;
call_state *s;
char *addr_buf = NULL;
gpr_cmdline *cl;
int shutdown_started = 0;
int shutdown_finished = 0;
int secure = 0;
char *addr = NULL;
char *fake_argv[1];
GPR_ASSERT(argc >= 1);
fake_argv[0] = argv[0];
grpc_test_init(1, fake_argv);
grpc_init();
srand(clock());
cl = gpr_cmdline_create("fling server");
gpr_cmdline_add_string(cl, "bind", "Bind host:port", &addr);
gpr_cmdline_add_flag(cl, "secure", "Run with security?", &secure);
gpr_cmdline_parse(cl, argc, argv);
gpr_cmdline_destroy(cl);
if (addr == NULL) {
gpr_join_host_port(&addr_buf, "::", grpc_pick_unused_port_or_die());
addr = addr_buf;
}
gpr_log(GPR_INFO, "creating server on: %s", addr);
cq = grpc_completion_queue_create();
if (secure) {
grpc_ssl_pem_key_cert_pair pem_key_cert_pair = {test_server1_key,
test_server1_cert};
grpc_server_credentials *ssl_creds =
grpc_ssl_server_credentials_create(NULL, &pem_key_cert_pair, 1);
server = grpc_server_create(NULL);
GPR_ASSERT(grpc_server_add_secure_http2_port(server, addr, ssl_creds));
grpc_server_credentials_release(ssl_creds);
} else {
server = grpc_server_create(NULL);
GPR_ASSERT(grpc_server_add_http2_port(server, addr));
}
grpc_server_register_completion_queue(server, cq);
grpc_server_start(server);
gpr_free(addr_buf);
addr = addr_buf = NULL;
grpc_call_details_init(&call_details);
request_call();
grpc_profiler_start("server.prof");
signal(SIGINT, sigint_handler);
while (!shutdown_finished) {
if (got_sigint && !shutdown_started) {
gpr_log(GPR_INFO, "Shutting down due to SIGINT");
grpc_server_shutdown_and_notify(server, cq, tag(1000));
GPR_ASSERT(grpc_completion_queue_pluck(
cq, tag(1000), GRPC_TIMEOUT_SECONDS_TO_DEADLINE(5))
.type == GRPC_OP_COMPLETE);
grpc_completion_queue_shutdown(cq);
shutdown_started = 1;
}
ev = grpc_completion_queue_next(
cq, gpr_time_add(gpr_now(GPR_CLOCK_REALTIME),
gpr_time_from_micros(1000000, GPR_TIMESPAN)));
s = ev.tag;
switch (ev.type) {
case GRPC_OP_COMPLETE:
switch ((gpr_intptr)s) {
case FLING_SERVER_NEW_REQUEST:
if (call != NULL) {
if (0 ==
strcmp(call_details.method, "/Reflector/reflectStream")) {
/* Received streaming call. Send metadata here. */
start_read_op(FLING_SERVER_READ_FOR_STREAMING);
send_initial_metadata();
} else {
/* Received unary call. Can do all ops in one batch. */
start_read_op(FLING_SERVER_READ_FOR_UNARY);
}
} else {
GPR_ASSERT(shutdown_started);
}
/* request_call();
*/
break;
case FLING_SERVER_READ_FOR_STREAMING:
if (payload_buffer != NULL) {
/* Received payload from client. */
start_write_op();
} else {
/* Received end of stream from client. */
start_send_status();
}
break;
case FLING_SERVER_WRITE_FOR_STREAMING:
/* Write completed at server */
grpc_byte_buffer_destroy(payload_buffer);
payload_buffer = NULL;
start_read_op(FLING_SERVER_READ_FOR_STREAMING);
break;
case FLING_SERVER_SEND_INIT_METADATA_FOR_STREAMING:
/* Metadata send completed at server */
break;
case FLING_SERVER_SEND_STATUS_FOR_STREAMING:
/* Send status and close completed at server */
grpc_call_destroy(call);
if (!shutdown_started) request_call();
break;
case FLING_SERVER_READ_FOR_UNARY:
/* Finished payload read for unary. Start all reamaining
* unary ops in a batch.
*/
handle_unary_method();
break;
case FLING_SERVER_BATCH_OPS_FOR_UNARY:
/* Finished unary call. */
grpc_byte_buffer_destroy(payload_buffer);
payload_buffer = NULL;
grpc_call_destroy(call);
if (!shutdown_started) request_call();
break;
}
break;
case GRPC_QUEUE_SHUTDOWN:
GPR_ASSERT(shutdown_started);
shutdown_finished = 1;
break;
case GRPC_QUEUE_TIMEOUT:
break;
}
}
grpc_profiler_stop();
grpc_call_details_destroy(&call_details);
grpc_server_destroy(server);
grpc_completion_queue_destroy(cq);
grpc_shutdown();
return 0;
}