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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
#include <stdio.h>
#include <qpid/dispatch.h>
#include <signal.h>
#include <sys/types.h>
#include <unistd.h>
#include <getopt.h>
#include "config.h"
static int exit_with_sigint = 0;
static dx_dispatch_t *dispatch;
/**
* The thread_start_handler is invoked once for each server thread at thread startup.
*/
static void thread_start_handler(void* context, int thread_id)
{
}
/**
* This is the OS signal handler, invoked on an undetermined thread at a completely
* arbitrary point of time. It is not safe to do anything here but signal the dispatch
* server with the signal number.
*/
static void signal_handler(int signum)
{
dx_server_signal(dispatch, signum);
}
/**
* This signal handler is called cleanly by one of the server's worker threads in
* response to an earlier call to dx_server_signal.
*/
static void server_signal_handler(void* context, int signum)
{
dx_server_pause(dispatch);
switch (signum) {
case SIGINT:
exit_with_sigint = 1;
case SIGQUIT:
case SIGTERM:
fflush(stdout);
dx_server_stop(dispatch);
break;
case SIGHUP:
break;
default:
break;
}
dx_server_resume(dispatch);
}
static void startup(void *context)
{
dx_server_pause(dispatch);
dx_dispatch_configure(dispatch);
dx_server_resume(dispatch);
}
int main(int argc, char **argv)
{
const char *config_path = DEFAULT_CONFIG_PATH;
static struct option long_options[] = {
{"config", required_argument, 0, 'c'},
{"help", no_argument, 0, 'h'},
{0, 0, 0, 0}
};
while (1) {
int c = getopt_long(argc, argv, "c:h", long_options, 0);
if (c == -1)
break;
switch (c) {
case 'c' :
config_path = optarg;
break;
case 'h' :
printf("Usage: %s [OPTION]\n\n", argv[0]);
printf(" -c, --config=PATH (%s)\n", DEFAULT_CONFIG_PATH);
printf(" Load configuration from file at PATH\n");
printf(" -h, --help Print this help\n");
exit(0);
case '?' :
exit(1);
}
}
dx_log_set_mask(0xFFFFFFFE);
dispatch = dx_dispatch(config_path);
dx_server_set_signal_handler(dispatch, server_signal_handler, 0);
dx_server_set_start_handler(dispatch, thread_start_handler, 0);
dx_timer_t *startup_timer = dx_timer(dispatch, startup, 0);
dx_timer_schedule(startup_timer, 0);
signal(SIGHUP, signal_handler);
signal(SIGQUIT, signal_handler);
signal(SIGTERM, signal_handler);
signal(SIGINT, signal_handler);
dx_server_run(dispatch);
dx_dispatch_free(dispatch);
if (exit_with_sigint) {
signal(SIGINT, SIG_DFL);
kill(getpid(), SIGINT);
}
return 0;
}
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