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#include "common.h"
#include "config.h"
#include "http_serv.h"
#include "logger.h"
#include "maat.h"
#include "monit.h"
#include "trace_output.h"
#include <getopt.h>
#include <math.h>
#include <pthread.h>
#include <sched.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/signalfd.h>
static const char appsym[64] = "dp_trace_telemetry";
struct mr_instance * mr_instance = NULL;
static void signal_handler(evutil_socket_t fd, short what, void * arg)
{
switch (fd)
{
case SIGHUP:
dynamic_config_load_and_apply();
break;
default:
dzlog_warn("Received unexpected signal: %d", fd);
}
}
static void * signal_event_thread_dispatch(void * arg)
{
struct event_base * base = (struct event_base *)arg;
event_base_dispatch(base);
return NULL;
}
void signal_event_init()
{
static int signals[] = {SIGHUP};
static struct event_base * evbase;
static struct event * evsignal[8];
evbase = event_base_new();
DP_TRACE_VERIFY(evbase != NULL, "event_base_new failed");
for (unsigned int i = 0; i < TELEMETRY_DIM(signals); i++)
{
evsignal[i] = evsignal_new(evbase, signals[i], signal_handler, NULL);
DP_TRACE_VERIFY(evsignal[i], "create signal event failed. signal is:%d", signals[i]);
evsignal_add(evsignal[i], NULL);
}
pthread_t tid;
int ret = pthread_create(&tid, NULL, signal_event_thread_dispatch, evbase);
DP_TRACE_VERIFY(ret == 0, "failed to create thread for event_base dispatch.return value:%d", ret);
}
void usage(const char * program_name)
{
fprintf(stdout,
"Usage:\n"
"\n"
" %s [option]\n"
"\n"
"Options:\n"
"\n"
" -c config file path\n"
" -d dynamic config file path\n"
" -v show current version\n"
" -h \n"
"\n",
program_name);
exit(0);
}
int main(int argc, char * argv[])
{
int ret = 0;
char * arg0_dup = strdup(argv[0]);
const char * program_name = basename(arg0_dup);
char config_path[PATH_MAX];
char dy_config_path[PATH_MAX];
int opt = 0;
while ((opt = getopt(argc, argv, "c:d:hv")) != -1)
{
char * endptr = NULL;
switch (opt)
{
case 'h': {
usage(program_name);
break;
}
case 'c': {
snprintf(config_path, sizeof(config_path), "%s", optarg);
break;
}
case 'd': {
snprintf(dy_config_path, sizeof(dy_config_path), "%s", optarg);
break;
}
case 'v': {
printf("dp_trace_telemetry current version: %s\n", DP_TRACE_VERSION);
exit(0);
}
default:
usage(program_name);
break;
}
}
config_create(config_path, dy_config_path);
// Load configuration file
config_load();
const struct config * conf = global_config_get();
logger_init();
http_serv_init();
mr_instance = marsio_create();
cpu_set_t cpu_set_io = conf->cpu_set_io;
ret = marsio_option_set(mr_instance, MARSIO_OPT_THREAD_MASK_IN_CPUSET, &cpu_set_io, sizeof(cpu_set_io));
DP_TRACE_VERIFY(ret >= 0, "marsio_option_set failed.");
ret = marsio_init(mr_instance, appsym);
DP_TRACE_VERIFY(ret >= 0, "marsio init failed.");
unsigned int nr_thread = CPU_COUNT(&conf->cpu_set_io);
monit_init(nr_thread);
dp_trace_ring_clear();
dp_trace_output_init();
dynamic_config_load_and_apply();
dp_trace_maat_init();
signal_event_init();
unsigned int ring_num = DP_TRACE_RING_NUM;
dzlog_info("thread count = %u", nr_thread);
dzlog_info("ring num = %u", ring_num);
pthread_t tmp_pid[nr_thread];
for (int i = 0; i < nr_thread; i++)
{
pthread_create(&tmp_pid[i], NULL, dp_trace_process_thread, (void *)(uintptr_t)i);
}
for (int i = 0; i < nr_thread; i++)
{
pthread_join(tmp_pid[i], NULL);
}
marsio_destory(mr_instance);
free(arg0_dup);
dzlog_info("%s is terminated.", program_name);
}
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