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Commitb545b81

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[Console] Add lock feature
1 parent1298ce5 commitb545b81

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5 files changed

+177
-0
lines changed

5 files changed

+177
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lines changed
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<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespaceSymfony\Component\Console\Command;
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useSymfony\Component\Console\Exception\LogicException;
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useSymfony\Component\Console\Exception\RuntimeException;
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useSymfony\Component\Filesystem\LockHandler;
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/**
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* Basic lock feature for commands.
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*
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* @author Fabien Potencier <fabien@symfony.com>
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*/
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trait LockableTrait
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{
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protected$lock;
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/**
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* Locks a command.
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*
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* @return bool
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*/
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protectedfunctionlock($name =null,$blocking =false)
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{
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if (!class_exists('Symfony\Component\Filesystem\LockHandler')) {
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thrownewRuntimeException('To enable the locking feature you must install the symfony/filesystem component');
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}
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if ($this->lock !==null) {
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thrownewLogicException('A lock is already in place');
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}
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$this->lock =newLockHandler($name ?:$this->getName());
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if (!$this->lock->lock($blocking)) {
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$this->release();
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returnfalse;
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}
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returntrue;
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}
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/**
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* Releases the command lock if there is one.
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*/
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protectedfunctionrelease()
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{
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if ($this->lock) {
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$this->lock->release();
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$this->lock =null;
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}
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}
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}
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<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespaceSymfony\Component\Console\Tests\Command;
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useSymfony\Component\Console\Tester\CommandTester;
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useSymfony\Component\Filesystem\LockHandler;
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class LockableTraitTestextends \PHPUnit_Framework_TestCase
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{
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protectedstatic$fixturesPath;
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publicstaticfunctionsetUpBeforeClass()
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{
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self::$fixturesPath =__DIR__.'/../Fixtures/';
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require_onceself::$fixturesPath.'/FooLockCommand.php';
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require_onceself::$fixturesPath.'/FooLock2Command.php';
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}
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publicfunctiontestLockIsReleased()
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{
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$command =new \FooLockCommand();
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$tester =newCommandTester($command);
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$this->assertSame(2,$tester->execute(array()));
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$this->assertSame(2,$tester->execute(array()));
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}
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publicfunctiontestLockReturnsFalseIfAlreadyLockedByAnotherCommand()
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{
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$command =new \FooLockCommand();
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$lock =newLockHandler($command->getName());
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$lock->lock();
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$tester =newCommandTester($command);
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$this->assertSame(1,$tester->execute(array()));
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$lock->release();
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$this->assertSame(2,$tester->execute(array()));
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}
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publicfunctiontestMultipleLockCallsThrowsLogicException()
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{
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$command =new \FooLock2Command();
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$tester =newCommandTester($command);
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$this->assertSame(1,$tester->execute(array()));
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}
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}
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<?php
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useSymfony\Component\Console\Command\Command;
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useSymfony\Component\Console\Command\LockableTrait;
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useSymfony\Component\Console\Input\InputInterface;
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useSymfony\Component\Console\Output\OutputInterface;
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class FooLock2Commandextends Command
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{
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use LockableTrait;
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protectedfunctionconfigure()
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{
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$this->setName('foo:lock2');
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}
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protectedfunctionexecute(InputInterface$input,OutputInterface$output)
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{
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try {
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$this->lock();
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$this->lock();
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}catch (LogicException$e) {
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return1;
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}
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return2;
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}
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}
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<?php
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useSymfony\Component\Console\Command\Command;
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useSymfony\Component\Console\Command\LockableTrait;
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useSymfony\Component\Console\Input\InputInterface;
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useSymfony\Component\Console\Output\OutputInterface;
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class FooLockCommandextends Command
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{
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use LockableTrait;
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protectedfunctionconfigure()
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{
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$this->setName('foo:lock');
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}
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protectedfunctionexecute(InputInterface$input,OutputInterface$output)
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{
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if (!$this->lock()) {
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return1;
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}
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$this->release();
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return2;
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}
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}

‎src/Symfony/Component/Console/composer.json‎

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},
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"require-dev": {
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"symfony/event-dispatcher":"~2.8|~3.0",
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"symfony/filesystem":"",
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"symfony/process":"~2.8|~3.0",
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"psr/log":"~1.0"
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},

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