/**
* Invoke remote execution of the streamer thread with the streamer engine job
* @param X_Streamer_Engine $engine
* @return boolean true if thread move to running state, false otherwise
* This could happen if streamer job failed really fast (wrong params?)
* or if the job is appended between the last waiting tick and the shutdown
* of the thread
*/
public function start(X_Streamer_Engine $engine)
{
// check if streamer is alive (if it is, shutdown it)
if ($this->isStreaming()) {
$this->stop();
}
// get standard params overloaded by engine's ones, if any
$params = array_merge(array('streamerId' => $engine->getId(), 'streamerClass' => get_class($engine)), $engine->getRunnableParams());
// then wake up the thread
X_Threads_Manager::instance()->appendJob($engine->getRunnableClass(), $params, self::THREAD_ID);
// sleep 1 second, then check for 10 times and watch if something is working
sleep(1);
$i = 10;
$threadInfo = X_Threads_Manager::instance()->getThreadInfo(self::THREAD_ID);
while ($threadInfo->getState() != X_Threads_Thread_Info::RUNNING && $i > 0) {
// this is a very special case: i appended the job just between
// the last waiting tick and the stop of the thread,
// so the thread manager tought he can simple append the message,
// but for real the thread go in stop state (so it haven't read the
// read the message)
// to avoid this, i just append a renew message, so the thread
// move from stop -> run stream job -> stop (if any)
sleep(1);
$threadInfo = X_Threads_Manager::instance()->getThreadInfo(self::THREAD_ID);
$i--;
}
// check 1 more time
if ($i <= 0 || $threadInfo->getState() != X_Threads_Thread_Info::RUNNING) {
X_Debug::e("Streamer thread doesn't want to wake up or it finished really fast");
return false;
}
return true;
}
/**
* add a new Streamer_Engine inside the supported streamers
* @param X_Streamer_Engine $streamer concrete implementation of X_Streamer_Engine
* @param string $id an overloaded streamer id
* @param string $pattern an overloaded location pattern
* @return void
*/
public function register(X_Streamer_Engine $streamer, $id = null)
{
if ($id === null) {
$id = $streamer->getId();
}
X_Debug::i("Registering streamer {{$id}}");
$this->streamers[$id] = $streamer;
return $this;
}
