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#include <errno.h>
#include <unistd.h>
#include <signal.h>
#include <pthread.h>
#include <sys/prctl.h>
#include <MESA/breakpad_mini.h>
#include "sce.h"
#include "log.h"
#include "utils.h"
#include "sf_metrics.h"
#include "global_metrics.h"
struct breakpad_instance *g_breakpad = NULL;
static int is_need_stop = 0;
#ifdef SCE_GIT_VERSION
static __attribute__((__used__)) const char *__sce_version = SCE_GIT_VERSION;
#else
static __attribute__((__used__)) const char *__sce_version = "Unknown";
#endif
static void usage(char *cmd)
{
fprintf(stderr, "USAGE: %s [OPTIONS]\n", cmd);
fprintf(stderr, " -v -- show version\n");
fprintf(stderr, " -h -- show help info\n\n");
fprintf(stderr, "kill -s SIGHUP $PID -- reload zlog configure\n");
fprintf(stderr, "kill -s SIGINT $PID -- exit gracefully\n");
fprintf(stderr, "kill -s SIGQUIT $PID -- exit gracefully\n");
fprintf(stderr, "kill -s SIGTERM $PID -- exit gracefully\n");
}
static void sig_handler(int signo)
{
if (signo == SIGHUP)
{
LOG_INFO("%s: recv SIGHUP, reload zlog.conf", LOG_TAG_SCE);
LOG_RELOAD();
}
if (signo == SIGINT)
{
LOG_ERROR("%s: recv SIGINT, exit !!!", LOG_TAG_SCE);
ATOMIC_SET(&is_need_stop, 1);
}
if (signo == SIGQUIT)
{
LOG_ERROR("%s: recv SIGQUIT, exit !!!", LOG_TAG_SCE);
ATOMIC_SET(&is_need_stop, 1);
}
if (signo == SIGTERM)
{
LOG_ERROR("%s: recv SIGTERM, exit !!!", LOG_TAG_SCE);
ATOMIC_SET(&is_need_stop, 1);
}
}
static void *worker_thread_cycle(void *arg)
{
struct thread_ctx *thread_ctx = (struct thread_ctx *)arg;
struct packet_io *handle = thread_ctx->ref_io;
struct sce_ctx *sce_ctx = thread_ctx->ref_sce_ctx;
struct timestamp *ts = sce_ctx->ts;
struct sf_metrics *sf_metrics = sce_ctx->sf_metrics;
struct session_table *session_table = thread_ctx->session_table;
struct thread_metrics *thread_metrics = &thread_ctx->thread_metrics;
struct global_metrics *global_metrics = thread_ctx->ref_global_metrics;
int thread_index = thread_ctx->thread_index;
int timeout_ms = 0;
int n_packet_recved = 0;
char thread_name[16];
uint64_t sf_metrics_last_send_ts = timestamp_get_msec(ts);
uint64_t sf_metrics_send_interval = sf_metrics_get_interval(sf_metrics);
ATOMIC_SET(&thread_ctx->thread_is_runing, 1);
snprintf(thread_name, sizeof(thread_name), "sce:worker-%d", thread_index);
prctl(PR_SET_NAME, (unsigned long long)thread_name, NULL, NULL, NULL);
if (packet_io_init(handle, thread_ctx) != 0)
{
goto error_out;
}
LOG_INFO("%s: worker thread %d is running", LOG_TAG_SCE, thread_index);
while (!ATOMIC_READ(&is_need_stop))
{
n_packet_recved = packet_io_polling_nf(handle, thread_ctx);
n_packet_recved += packet_io_polling_endpoint_l3(handle, thread_ctx);
n_packet_recved += packet_io_polling_endpoint_l2(handle, thread_ctx);
if (n_packet_recved == 0)
{
timeout_ms = sf_metrics_last_send_ts + sf_metrics_send_interval - timestamp_get_msec(ts);
if (timeout_ms <= 0)
{
timeout_ms = 0;
}
packet_io_wait(handle, thread_ctx, timeout_ms);
}
global_metrics_update(global_metrics, thread_metrics, thread_index);
if (ATOMIC_READ(&thread_ctx->session_table_need_reset) > 0)
{
int n_session = session_table_count(session_table);
session_table_reset(session_table);
ATOMIC_ZERO(&thread_ctx->session_table_need_reset);
ATOMIC_ADD(&(thread_metrics->session_free), n_session);
}
if (timestamp_get_msec(ts) - sf_metrics_last_send_ts >= sf_metrics_send_interval)
{
sf_metrics_output(sf_metrics, thread_index);
sf_metrics_reset(sf_metrics, thread_index);
sf_metrics_last_send_ts = timestamp_get_msec(ts);
}
}
error_out:
ATOMIC_SET(&thread_ctx->thread_is_runing, 0);
LOG_ERROR("%s: worker thread %d exiting", LOG_TAG_SCE, thread_ctx->thread_index);
return (void *)NULL;
}
int main(int argc, char **argv)
{
const char *profile = "./conf/sce.conf";
uint64_t ts_update_interval = 0;
uint64_t g_metrics_last_send_ts = 0;
uint64_t g_metrics_send_interval = 0;
int opt = 0;
while ((opt = getopt(argc, argv, "vh")) != -1)
{
switch (opt)
{
case 'v':
fprintf(stderr, "TSG Service Chaining Engine, Version: %s\n", __sce_version);
return 0;
case 'h': /* fall through */
default:
usage(argv[0]);
return 0;
}
}
if (LOG_INIT("./conf/zlog.conf") == -1)
{
return -1;
}
LOG_ERROR("%s: TSG Service Chaining Engine, Version: %s Start ...", LOG_TAG_SCE, __sce_version);
if (signal(SIGHUP, sig_handler) == SIG_ERR)
{
LOG_ERROR("%s: unable to register SIGHUP signal handler, error %d: %s", LOG_TAG_SCE, errno, strerror(errno));
LOG_CLOSE();
return -1;
}
if (signal(SIGINT, sig_handler) == SIG_ERR)
{
LOG_ERROR("%s: unable to register SIGINT signal handler, error %d: %s", LOG_TAG_SCE, errno, strerror(errno));
LOG_CLOSE();
return -1;
}
if (signal(SIGQUIT, sig_handler) == SIG_ERR)
{
LOG_ERROR("%s: unable to register SIGQUIT signal handler, error %d: %s", LOG_TAG_SCE, errno, strerror(errno));
LOG_CLOSE();
return -1;
}
if (signal(SIGTERM, sig_handler) == SIG_ERR)
{
LOG_ERROR("%s: unable to register SIGTERM signal handler, error %d: %s", LOG_TAG_SCE, errno, strerror(errno));
LOG_CLOSE();
return -1;
}
g_breakpad = breakpad_init(profile, "system", g_default_logger, __sce_version);
struct sce_ctx *ctx = sce_ctx_create(profile);
if (ctx == NULL)
{
LOG_CLOSE();
return -1;
}
for (int i = 0; i < ctx->nr_worker_threads; i++)
{
ctx->work_threads[i].tid = 0;
ctx->work_threads[i].thread_index = i;
ctx->work_threads[i].session_table = session_table_create();
ctx->work_threads[i].ref_io = ctx->io;
ctx->work_threads[i].ref_global_metrics = ctx->metrics;
ctx->work_threads[i].ref_enforcer = ctx->enforcer;
ctx->work_threads[i].ref_sce_ctx = ctx;
ctx->work_threads[i].session_table_need_reset = 0;
ctx->work_threads[i].tx_packets_ipid = random();
}
for (int i = 0; i < ctx->nr_worker_threads; i++)
{
struct thread_ctx *thread_ctx = &ctx->work_threads[i];
if (pthread_create(&thread_ctx->tid, NULL, worker_thread_cycle, (void *)thread_ctx) < 0)
{
LOG_ERROR("%s: unable to create worker thread %d, error %d: %s", LOG_TAG_SCE, i, errno, strerror(errno));
goto error_out;
}
}
timestamp_update(ctx->ts);
ts_update_interval = timestamp_update_interval_ms(ctx->ts);
g_metrics_last_send_ts = timestamp_get_msec(ctx->ts);
g_metrics_send_interval = ctx->metrics->config.statsd_cycle * 1000;
while (!ATOMIC_READ(&is_need_stop))
{
if (timestamp_get_msec(ctx->ts) - g_metrics_last_send_ts >= g_metrics_send_interval)
{
global_metrics_dump(ctx->metrics);
g_metrics_last_send_ts = timestamp_get_msec(ctx->ts);
}
usleep(ts_update_interval * 1000);
timestamp_update(ctx->ts);
}
error_out:
for (int i = 0; i < ctx->nr_worker_threads; i++)
{
while (1)
{
if (ATOMIC_READ(&(ctx->work_threads[i].thread_is_runing)) == 0)
{
struct thread_ctx *thread_ctx = &ctx->work_threads[i];
session_table_destory(thread_ctx->session_table);
break;
}
else
{
sleep(1);
LOG_ERROR("%s: wait thread %d exit", LOG_TAG_SCE, i);
}
}
}
sce_ctx_destory(ctx);
LOG_CLOSE();
return 0;
}
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