[Lock] Re-add the Lock component in 3.4

Author: jderusse

.gitignore

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+composer.lock
+phpunit.xml
+vendor/

CHANGELOG.md

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+CHANGELOG
+=========
+
+3.4.0
+-----
+
+ * added the component

Exception/ExceptionInterface.php

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+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <[email protected]>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Lock\Exception;
+
+/**
+ * Base ExceptionInterface for the Lock Component.
+ *
+ * @author Jérémy Derussé <[email protected]>
+ */
+interface ExceptionInterface
+{
+}

Exception/InvalidArgumentException.php

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+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <[email protected]>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Lock\Exception;
+
+/**
+ * @author Jérémy Derussé <[email protected]>
+ */
+class InvalidArgumentException extends \InvalidArgumentException implements ExceptionInterface
+{
+}

Exception/LockAcquiringException.php

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+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <[email protected]>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Lock\Exception;
+
+/**
+ * LockAcquiringException is thrown when an issue happens during the acquisition of a lock.
+ *
+ * @author Jérémy Derussé <[email protected]>
+ */
+class LockAcquiringException extends \RuntimeException implements ExceptionInterface
+{
+}

Exception/LockConflictedException.php

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+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <[email protected]>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Lock\Exception;
+
+/**
+ * LockConflictedException is thrown when a lock is acquired by someone else.
+ *
+ * @author Jérémy Derussé <[email protected]>
+ */
+class LockConflictedException extends \RuntimeException implements ExceptionInterface
+{
+}

Exception/LockReleasingException.php

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+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <[email protected]>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Lock\Exception;
+
+/**
+ * LockReleasingException is thrown when an issue happens during the release of a lock.
+ *
+ * @author Jérémy Derussé <[email protected]>
+ */
+class LockReleasingException extends \RuntimeException implements ExceptionInterface
+{
+}

Exception/LockStorageException.php

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+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <[email protected]>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Lock\Exception;
+
+/**
+ * LockStorageException is thrown when an issue happens during the manipulation of a lock in a store.
+ *
+ * @author Jérémy Derussé <[email protected]>
+ */
+class LockStorageException extends \RuntimeException implements ExceptionInterface
+{
+}

Exception/NotSupportedException.php

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+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <[email protected]>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Lock\Exception;
+
+/**
+ * NotSupportedException is thrown when an unsupported method is called.
+ *
+ * @author Jérémy Derussé <[email protected]>
+ */
+class NotSupportedException extends \LogicException implements ExceptionInterface
+{
+}

Factory.php

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+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <[email protected]>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Lock;
+
+use Psr\Log\LoggerAwareInterface;
+use Psr\Log\LoggerAwareTrait;
+use Psr\Log\NullLogger;
+
+/**
+ * Factory provides method to create locks.
+ *
+ * @author Jérémy Derussé <[email protected]>
+ */
+class Factory implements LoggerAwareInterface
+{
+    use LoggerAwareTrait;
+
+    private $store;
+
+    public function __construct(StoreInterface $store)
+    {
+        $this->store = $store;
+
+        $this->logger = new NullLogger();
+    }
+
+    /**
+     * Creates a lock for the given resource.
+     *
+     * @param string $resource The resource to lock
+     * @param float  $ttl      maximum expected lock duration
+     *
+     * @return Lock
+     */
+    public function createLock($resource, $ttl = 300.0)
+    {
+        $lock = new Lock(new Key($resource), $this->store, $ttl);
+        $lock->setLogger($this->logger);
+
+        return $lock;
+    }
+}