/**
* Close sessions that have been idle for too long.
*
* If the time since a session last sent data is greater than the set value in the
* service, it is disconnected. The connection timeout is disabled by default.
*/
void process_idle_sessions()
{
if (spinlock_acquire_nowait(&timeout_lock))
{
if (hkheartbeat >= next_timeout_check)
{
/** Because the resolution of the timeout is one second, we only need to
* check for it once per second. One heartbeat is 100 milliseconds. */
next_timeout_check = hkheartbeat + 10;
spinlock_acquire(&session_spin);
SESSION *all_session = get_all_sessions();
while (all_session)
{
if (all_session->service && all_session->client_dcb && all_session->client_dcb->state == DCB_STATE_POLLING &&
hkheartbeat - all_session->client_dcb->last_read > all_session->service->conn_idle_timeout * 10)
{
dcb_close(all_session->client_dcb);
}
all_session = all_session->next;
}
spinlock_release(&session_spin);
}
spinlock_release(&timeout_lock);
}
}
int service_refresh_users(SERVICE *service) {
int ret = 1;
/* check for another running getUsers request */
if (! spinlock_acquire_nowait(&service->users_table_spin)) {
LOGIF(LD, (skygw_log_write_flush(
LOGFILE_DEBUG,
"%lu [service_refresh_users] failed to get get lock for loading new users' table: another thread is loading users",
pthread_self())));
return 1;
}
/* check if refresh rate limit has exceeded */
if ( (time(NULL) < (service->rate_limit.last + USERS_REFRESH_TIME)) || (service->rate_limit.nloads > USERS_REFRESH_MAX_PER_TIME)) {
LOGIF(LE, (skygw_log_write_flush(
LOGFILE_ERROR,
"%lu [service_refresh_users] refresh rate limit exceeded loading new users' table",
pthread_self())));
spinlock_release(&service->users_table_spin);
return 1;
}
service->rate_limit.nloads++;
/* update time and counter */
if (service->rate_limit.nloads > USERS_REFRESH_MAX_PER_TIME) {
service->rate_limit.nloads = 1;
service->rate_limit.last = time(NULL);
}
ret = replace_mysql_users(service);
/* remove lock */
spinlock_release(&service->users_table_spin);
if (ret >= 0)
return 0;
else
return 1;
}
