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<?php
/**
* StatusNet, the distributed open-source microblogging tool
*
* Monitoring output helper for IoMaster and IoManager/QueueManager
*
* PHP version 5
*
* LICENCE: This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* @category QueueManager
* @package StatusNet
* @author Brion Vibber <brion@status.net>
* @copyright 2010 StatusNet, Inc.
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
* @link http://status.net/
*/
class QueueMonitor
{
protected $monSocket = null;
/**
* Increment monitoring statistics for a given counter, if configured.
* Only explicitly listed thread/site/queue owners will be incremented.
*
* @param string $key counter name
* @param array $owners list of owner keys like 'queue:xmpp' or 'site:stat01'
*/
public function stats($key, $owners=array())
{
$this->ping(array('counter' => $key,
'owners' => $owners));
}
/**
* Send thread state update to the monitoring server, if configured.
*
* @param string $thread ID (eg 'generic.1')
* @param string $state ('init', 'queue', 'shutdown' etc)
* @param string $substate (optional, eg queue name 'omb' 'sms' etc)
*/
public function logState($threadId, $state, $substate='')
{
$this->ping(array('thread_id' => $threadId,
'state' => $state,
'substate' => $substate,
'ts' => microtime(true)));
}
/**
* General call to the monitoring server
*/
protected function ping($data)
{
$target = common_config('queue', 'monitor');
if (empty($target)) {
return;
}
$data = $this->prepMonitorData($data);
if (substr($target, 0, 4) == 'udp:') {
$this->pingUdp($target, $data);
} else if (substr($target, 0, 5) == 'http:') {
$this->pingHttp($target, $data);
} else {
common_log(LOG_ERR, __METHOD__ . ' unknown monitor target type ' . $target);
}
}
protected function pingUdp($target, $data)
{
if (!$this->monSocket) {
$this->monSocket = stream_socket_client($target, $errno, $errstr);
}
if ($this->monSocket) {
$post = http_build_query($data, '', '&');
stream_socket_sendto($this->monSocket, $post);
} else {
common_log(LOG_ERR, __METHOD__ . " UDP logging fail: $errstr");
}
}
protected function pingHttp($target, $data)
{
$client = new HTTPClient();
$result = $client->post($target, array(), $data);
if (!$result->isOk()) {
common_log(LOG_ERR, __METHOD__ . ' HTTP ' . $result->getStatus() .
': ' . $result->getBody());
}
}
protected function prepMonitorData($data)
{
#asort($data);
#$macdata = http_build_query($data, '', '&');
#$key = 'This is a nice old key';
#$data['hmac'] = hash_hmac('sha256', $macdata, $key);
return $data;
}
}
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