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Update worker code to the point that it can run.

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Added plugin architecture for Worker functions, to support multiple
ripping engines.
Update worker script to use the new code.
Update Logger to output messages to console when running under the
worker script.
This commit is contained in:
Ben Roberts
2010-08-22 23:05:33 +01:00
parent 853c380e65
commit 40fa00c034
7 changed files with 260 additions and 67 deletions
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4
lib/HandBrakeCluster/Log.class.php
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@@ -28,6 +28,10 @@ class HandBrakeCluster_Log {
array('name' => 'message', 'value' => $message, 'type' => PDO::PARAM_STR)
)
);
if (HBC_File == 'worker') {
echo date("r") . ' ' . $message . "\n";
}
}
public function debug($message, $job_id = 0) {

50
lib/HandBrakeCluster/PluginFactory.class.php Normal file
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@@ -0,0 +1,50 @@
<?php
abstract class HandBrakeCluster_PluginFactory {
static protected $validPlugins;
abstract public static function init();
public static function getValidPlugins() {
return array_keys(self::$validPlugins);
}
protected static function findPlugins($directory) {
$plugins = array();
$iterator = new HandBrakeCluster_Utility_ClassFilesIterator(new HandBrakeCluster_Utility_VisibleFilesIterator(new DirectoryIterator(HandBrakeCluster_Lib . $directory)));
foreach ($iterator as /** @var SplFileInfo */ $file) {
$plugin = preg_replace('/.class.php$/', '', $file->getFilename());
$plugins[] = $plugin;
}
return $plugins;
}
protected static function loadPlugins($plugins, $prefix) {
self::$validPlugins = array();
foreach ($plugins as $plugin) {
$fullClassname = $prefix . $plugin;
if ( ! class_exists($fullClassname, true)) {
echo "Cannot load $fullClassname\n";
continue;
}
if ( ! in_array('HandBrakeCluster_Worker_IPlugin', class_implements($fullClassname))) {
echo "$plugin does not implement the necessary interfaces\n";
continue;
}
// Initialise the plugin
call_user_func(array($fullClassname, 'init'));
self::$validPlugins[$plugin] = $fullClassname;
}
}
}
?>

97
lib/HandBrakeCluster/Worker.class.php
View File

@@ -2,18 +2,40 @@
class HandBrakeCluster_Worker {
const DEINTERLACE_ALWAYS = 1;
const DEINTERLACE_SELECTIVELY = 2;
protected $gearman;
public function __construct() {
$gearman = new GearmanWorker();
$gearman->addServers($config->get('rips.job_servers'));
$gearman->addFunction('handbrake_rip', 'hbc_gearman_handbrake_rip');
$this->init();
}
public function start() {
while($gearman->work()) {
if ($gearman->returnCode() != GEARMAN_SUCCESS) {
private function init() {
if ($this->gearman) {
return;
}
$config = HandBrakeCluster_Main::instance()->config();
$this->gearman = new GearmanWorker();
$this->gearman->addServers($config->get('rips.job_servers'));
// Load all the plugin classes
echo "Loading Plugins\n";
HandBrakeCluster_Worker_PluginFactory::scan();
foreach (HandBrakeCluster_Worker_PluginFactory::getValidPlugins() as $plugin) {
echo "Grabbing worker functions provided by {$plugin}\n";
$workerFunctions = HandBrakeCluster_Worker_PluginFactory::getPluginWorkerFunctions($plugin);
foreach ($workerFunctions as $function => $callback) {
echo "Adding {$plugin}::{$callback[1]} as {$function}\n";
$this->gearman->addFunction($function, $callback);
}
}
}
public function start() {
while($this->gearman->work()) {
if ($this->gearman->returnCode() != GEARMAN_SUCCESS) {
break;
}
}
@@ -21,65 +43,6 @@ class HandBrakeCluster_Worker {
return true;
}
public function handbrakeRip($client_job_id, $rip_options) {
$handbrake_cmd_raw = array(
'-n', $config->get('rips.nice'),
$config->get('rips.handbrake_binary'),
self::evaluateOption($rip_options, 'input_filename', '-i'),
self::evaluateOption($rip_options, 'real_output_filename', '-o'),
self::evaluateOption($rip_options, 'title'),
self::evaluateOption($rip_options, 'format', '-f'),
self::evaluateOption($rip_options, 'video_codec', '-e'),
self::evaluateOption($rip_options, 'quantizer', '-q'),
self::evaluateOption($rip_options, 'video_width', '-w'),
self::evaluateOption($rip_options, 'video_height', '-l'),
self::evaluateOption($rip_options, 'deinterlace'),
self::evaluateOption($rip_options, 'audio_tracks', '-a'),
self::evaluateOption($rip_options, 'audio_codec', '-E'),
self::evaluateOption($rip_options, 'audio_names', '-A'),
self::evaluateOption($rip_options, 'subtitle_tracks', '-s'),
);
$handbrake_cmd = array($config->get('rips.nice_binary'));
foreach(new RecursiveIteratorIterator(new RecursiveArrayIterator($handbrake_cmd_raw)) as $value) {
$handbrake_cmd[] = shell_escape_arg($value);
}
$handbrake_cmd = array_join(' ', $handbrake_cmd);
return HandBrakeCluster_ForegroundTask::execute($handbrake_cmd, null, null, null, array($this, 'callback_stdout'), array($this, 'callback_stderr'), $this);
}
protected static function evaluateOption(array &$rip_options, $name, $option = null) {
switch($name) {
case 'title': {
if (!$rip_options[$name] || int($rip_options[$name]) < 0) {
return array('-L');
} else {
return array('-t', $rip_options[$name]);
}
} break;
case 'deinterlace': {
switch ($rip_options[$name]) {
case self::DEINTERLACE_ALWAYS:
return array('-d');
case self::DEINTERLACE_SELECTIVELY:
return array('-5');
default:
return array();
}
}
default:
return array(isset($option) ? $option : $name, $rip_options[$name]);
}
}
}
function hbc_gearman_handbrake_rip(GearmanJob $job) {
return $worker->handbrakeRip($job->unique(), unserialize($job->workload));
}
?>

16
lib/HandBrakeCluster/Worker/IPlugin.class.php Normal file
View File

@@ -0,0 +1,16 @@
<?php
interface HandBrakeCluster_Worker_IPlugin {
public static function workerFunctions();
public static function rip(GearmanJob $job);
public function evaluateOption($name, $option = null);
public function callbackStdout($id, $data);
public function callbackStderr($id, $data);
}
?>

130
lib/HandBrakeCluster/Worker/Plugin/HandBrake.class.php Normal file
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@@ -0,0 +1,130 @@
<?php
class HandBrakeCluster_Worker_Plugin_HandBrake implements HandBrakeCluster_Worker_IPlugin {
const DEINTERLACE_ALWAYS = 1;
const DEINTERLACE_SELECTIVELY = 2;
private $stdout;
private $stderr;
private $job;
private $client_job_id;
private $rip_options;
private function __construct(GearmanJob $job) {
$this->stdout = '';
$this->stderr = '';
$this->job = $job;
$this->client_job_id = $job->unique();
$this->rip_options = unserialize($job->workload());
}
public static function init() {
}
public static function workerFunctions() {
return array(
'handbrake_rip' => array(__CLASS__, 'rip'),
);
}
public static function rip(GearmanJob $job) {
$rip = new self($job);
$rip->execute();
}
public function execute() {
$config = HandBrakeCluster_Main::instance()->config();
$handbrake_cmd_raw = array(
'-n', $config->get('rips.nice'),
$config->get('rips.handbrake_binary'),
$this->evaluateOption('input_filename', '-i'),
$this->evaluateOption('output_filename', '-o'),
$this->evaluateOption('title'),
$this->evaluateOption('format', '-f'),
$this->evaluateOption('video_codec', '-e'),
$this->evaluateOption('quantizer', '-q'),
$this->evaluateOption('video_width', '-w'),
$this->evaluateOption('video_height', '-l'),
$this->evaluateOption('deinterlace'),
$this->evaluateOption('audio_tracks', '-a'),
$this->evaluateOption('audio_codec', '-E'),
$this->evaluateOption('audio_names', '-A'),
$this->evaluateOption('subtitle_tracks', '-s'),
);
$handbrake_cmd = array($config->get('rips.nice_binary'));
foreach(new RecursiveIteratorIterator(new RecursiveArrayIterator($handbrake_cmd_raw)) as $value) {
$handbrake_cmd[] = escapeshellarg($value);
}
$handbrake_cmd = join(' ', $handbrake_cmd);
return HandBrakeCluster_ForegroundTask::execute($handbrake_cmd, null, null, null, array($this, 'callbackStdout'), array($this, 'callbackStderr'), $this);
}
public function evaluateOption($name, $option = null) {
switch($name) {
case 'title': {
if (!$this->rip_options[$name] || (int)$this->rip_options[$name] < 0) {
return array('-L');
} else {
return array('-t', $this->rip_options[$name]);
}
} break;
case 'deinterlace': {
switch ($this->rip_options[$name]) {
case self::DEINTERLACE_ALWAYS:
return array('-d');
case self::DEINTERLACE_SELECTIVELY:
return array('-5');
default:
return array();
}
}
default:
return array(isset($option) ? $option : $name, $this->rip_options[$name]);
}
}
public function callbackStdout($rip, $data) {
$this->stdout .= $data;
while (count($lines = preg_split('/[\r\n]+/', $this->stdout, 2)) > 1) {
$line = $lines[0];
$this->stdout = $lines[1];
$log = HandBrakeCluster_Main::instance()->log();
$log->info($line);
}
}
public function callbackStderr($rip, $data) {
$this->stderr .= $data;
while (count($lines = preg_split('/[\r\n]+/', $this->stderr, 2)) > 1) {
$line = $lines[0];
$rip->stderr = $lines[1];
$matches = array();
if (preg_match('/Encoding: task \d+ of \d+, (\d+\.\d+) %/', $line, $matches)) {
$numerator = 100 * $matches[1];
$this->job->sendStatus($numerator, 100);
} else {
$log = HandBrakeCluster_Main::instance()->log();
$log->debug($line);
}
}
}
}
?>

27
lib/HandBrakeCluster/Worker/PluginFactory.class.php Normal file
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@@ -0,0 +1,27 @@
<?php
class HandBrakeCluster_Worker_PluginFactory extends HandBrakeCluster_PluginFactory {
const PLUGIN_DIR = 'HandBrakeCluster/Worker/Plugin/';
const PREFIX = 'HandBrakeCluster_Worker_Plugin_';
public static function init() {
}
public static function scan() {
$candidatePlugins = parent::findPlugins(self::PLUGIN_DIR);
parent::loadPlugins($candidatePlugins, self::PREFIX);
}
public static function getPluginWorkerFunctions($plugin) {
if ( ! isset(parent::$validPlugins[$plugin])) {
return null;
}
return call_user_func(array(parent::$validPlugins[$plugin], 'workerFunctions'));
}
}
?>

3
worker/handbrake-cluster-worker.php
View File

@@ -6,6 +6,9 @@ require_once '../config.php';
require_once HandBrakeCluster_Lib . 'HandBrakeCluster/Main.class.php';
try {
set_time_limit(0);
$main = HandBrakeCluster_Main::instance();
$smarty = $main->smarty();