/**
* afsql_dd_database_thread:
*
* This is the thread inserting records into the database.
**/
static void
afsql_dd_database_thread(gpointer arg)
{
AFSqlDestDriver *self = (AFSqlDestDriver *) arg;
msg_verbose("Database thread started",
evt_tag_str("driver", self->super.super.id),
NULL);
while (!self->db_thread_terminate)
{
g_mutex_lock(self->db_thread_mutex);
if (self->db_thread_suspended)
{
afsql_dd_wait_for_suspension_wakeup(self);
/* we loop back to check if the thread was requested to terminate */
}
else if (!log_queue_check_items(self->queue, NULL, afsql_dd_message_became_available_in_the_queue, self, NULL))
{
/* we have nothing to INSERT into the database, let's wait we get some new stuff */
if (self->flush_lines_queued > 0)
{
if (!afsql_dd_commit_txn(self))
{
afsql_dd_disconnect(self);
afsql_dd_suspend(self);
g_mutex_unlock(self->db_thread_mutex);
continue;
}
}
else if (!self->db_thread_terminate)
{
g_cond_wait(self->db_thread_wakeup_cond, self->db_thread_mutex);
}
/* we loop back to check if the thread was requested to terminate */
}
g_mutex_unlock(self->db_thread_mutex);
if (self->db_thread_terminate)
break;
if (!afsql_dd_insert_db(self))
{
afsql_dd_disconnect(self);
afsql_dd_suspend(self);
}
}
while (log_queue_get_length(self->queue) > 0)
{
if (!afsql_dd_insert_db(self))
{
goto exit;
}
}
if (self->flush_lines_queued > 0)
{
/* we can't do anything with the return value here. if commit isn't
* successful, we get our backlog back, but we have no chance
* submitting that back to the SQL engine.
*/
afsql_dd_commit_txn(self);
}
exit:
afsql_dd_disconnect(self);
msg_verbose("Database thread finished",
evt_tag_str("driver", self->super.super.id),
NULL);
}
/**
* afsql_dd_database_thread:
*
* This is the thread inserting records into the database.
**/
static gpointer
afsql_dd_database_thread(gpointer arg)
{
AFSqlDestDriver *self = (AFSqlDestDriver *) arg;
msg_verbose("Database thread started",
evt_tag_str("driver", self->super.super.id),
NULL);
while (!self->db_thread_terminate)
{
g_mutex_lock(self->db_thread_mutex);
if (self->db_thread_suspended)
{
/* we got suspended, probably because of a connection error,
* during this time we only get wakeups if we need to be
* terminated. */
if (!self->db_thread_terminate)
g_cond_timed_wait(self->db_thread_wakeup_cond, self->db_thread_mutex, &self->db_thread_suspend_target);
self->db_thread_suspended = FALSE;
g_mutex_unlock(self->db_thread_mutex);
/* we loop back to check if the thread was requested to terminate */
}
else if (log_queue_get_length(self->queue) == 0)
{
/* we have nothing to INSERT into the database, let's wait we get some new stuff */
if (self->flush_lines_queued > 0 && self->flush_timeout > 0)
{
GTimeVal flush_target;
g_get_current_time(&flush_target);
g_time_val_add(&flush_target, self->flush_timeout * 1000);
if (!self->db_thread_terminate && !g_cond_timed_wait(self->db_thread_wakeup_cond, self->db_thread_mutex, &flush_target))
{
/* timeout elapsed */
if (!afsql_dd_commit_txn(self, FALSE))
{
afsql_dd_disconnect(self);
afsql_dd_suspend(self);
g_mutex_unlock(self->db_thread_mutex);
continue;
}
}
}
else if (!self->db_thread_terminate)
{
g_cond_wait(self->db_thread_wakeup_cond, self->db_thread_mutex);
}
g_mutex_unlock(self->db_thread_mutex);
/* we loop back to check if the thread was requested to terminate */
}
else
g_mutex_unlock(self->db_thread_mutex);
if (self->db_thread_terminate)
break;
if (!afsql_dd_insert_db(self))
{
afsql_dd_disconnect(self);
afsql_dd_suspend(self);
}
}
if (self->flush_lines_queued > 0)
{
/* we can't do anything with the return value here. if commit isn't
* successful, we get our backlog back, but we have no chance
* submitting that back to the SQL engine.
*/
afsql_dd_commit_txn(self, TRUE);
}
afsql_dd_disconnect(self);
msg_verbose("Database thread finished",
evt_tag_str("driver", self->super.super.id),
NULL);
return NULL;
}
