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220 lines (185 loc) · 5.08 KB
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<?php
namespace Enqueue\Fs;
use Interop\Queue\InvalidDestinationException;
use Interop\Queue\PsrContext;
use Interop\Queue\PsrDestination;
use Interop\Queue\PsrQueue;
use Makasim\File\TempFile;
use Symfony\Component\Filesystem\Filesystem;
class FsContext implements PsrContext
{
/**
* @var string
*/
private $storeDir;
/**
* @var int
*/
private $preFetchCount;
/**
* @var int
*/
private $chmod;
/**
* @var null
*/
private $pollingInterval;
/**
* @var Lock
*/
private $lock;
/**
* @param string $storeDir
* @param int $preFetchCount
* @param int $chmod
* @param null $pollingInterval
*/
public function __construct($storeDir, $preFetchCount, $chmod, $pollingInterval = null)
{
$fs = new Filesystem();
$fs->mkdir($storeDir);
$this->storeDir = $storeDir;
$this->preFetchCount = $preFetchCount;
$this->chmod = $chmod;
$this->pollingInterval = $pollingInterval;
$this->lock = new LegacyFilesystemLock();
}
/**
* {@inheritdoc}
*
* @return FsMessage
*/
public function createMessage($body = '', array $properties = [], array $headers = [])
{
return new FsMessage($body, $properties, $headers);
}
/**
* {@inheritdoc}
*
* @return FsDestination
*/
public function createTopic($topicName)
{
return $this->createQueue($topicName);
}
/**
* {@inheritdoc}
*
* @return FsDestination
*/
public function createQueue($queueName)
{
return new FsDestination(new \SplFileInfo($this->getStoreDir().'/'.$queueName));
}
/**
* @param PsrDestination|FsDestination $destination
*/
public function declareDestination(PsrDestination $destination)
{
InvalidDestinationException::assertDestinationInstanceOf($destination, FsDestination::class);
set_error_handler(function ($severity, $message, $file, $line) {
throw new \ErrorException($message, 0, $severity, $file, $line);
});
try {
if (false == file_exists($destination->getFileInfo())) {
touch($destination->getFileInfo());
chmod($destination->getFileInfo(), $this->chmod);
}
} finally {
restore_error_handler();
}
}
public function workWithFile(FsDestination $destination, $mode, callable $callback)
{
$this->declareDestination($destination);
set_error_handler(function ($severity, $message, $file, $line) {
throw new \ErrorException($message, 0, $severity, $file, $line);
});
try {
$file = fopen($destination->getFileInfo(), $mode);
$this->lock->lock($destination);
return call_user_func($callback, $destination, $file);
} finally {
if (isset($file)) {
fclose($file);
}
$this->lock->release($destination);
restore_error_handler();
}
}
/**
* {@inheritdoc}
*
* @return FsDestination
*/
public function createTemporaryQueue()
{
return new FsDestination(new TempFile($this->getStoreDir().'/'.uniqid('tmp-q-', true)));
}
/**
* {@inheritdoc}
*
* @return FsProducer
*/
public function createProducer()
{
return new FsProducer($this);
}
/**
* {@inheritdoc}
*
* @param FsDestination|PsrDestination $destination
*
* @return FsConsumer
*/
public function createConsumer(PsrDestination $destination)
{
InvalidDestinationException::assertDestinationInstanceOf($destination, FsDestination::class);
$consumer = new FsConsumer($this, $destination, $this->preFetchCount);
if ($this->pollingInterval) {
$consumer->setPollingInterval($this->pollingInterval);
}
return $consumer;
}
public function close()
{
$this->lock->releaseAll();
}
/**
* @param PsrQueue|FsDestination $queue
*/
public function purge(PsrQueue $queue)
{
InvalidDestinationException::assertDestinationInstanceOf($queue, FsDestination::class);
$this->workWithFile($queue, 'c', function (FsDestination $destination, $file) {
ftruncate($file, 0);
});
}
/**
* @return int
*/
public function getPreFetchCount()
{
return $this->preFetchCount;
}
/**
* @param int $preFetchCount
*/
public function setPreFetchCount($preFetchCount)
{
$this->preFetchCount = $preFetchCount;
}
/**
* @return string
*/
private function getStoreDir()
{
if (false == is_dir($this->storeDir)) {
throw new \LogicException(sprintf('The directory %s does not exist', $this->storeDir));
}
if (false == is_writable($this->storeDir)) {
throw new \LogicException(sprintf('The directory %s is not writable', $this->storeDir));
}
return $this->storeDir;
}
}