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<?php |
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namespace WyriHaximus\React\ChildProcess\Messenger; |
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use React\ChildProcess\Process; |
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use React\EventLoop\LoopInterface; |
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use React\Promise; |
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use React\Socket\ConnectionInterface; |
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use React\Socket\Connector; |
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use React\Socket\Server; |
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use WyriHaximus\React\ChildProcess\Messenger\Messages\Factory as MessengesFactory; |
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use WyriHaximus\React\ChildProcess\Messenger\Messages\Payload; |
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final class Factory |
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{ |
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const INTERVAL = 0.1; |
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const TIMEOUT = 13; |
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const TERMINATE_TIMEOUT = 1; |
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const PROCESS_REGISTER = 'wyrihaximus.react.child-process.messenger.child.register'; |
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public static function parent( |
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Process $process, |
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LoopInterface $loop, |
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array $options = [] |
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) { |
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return new Promise\Promise(function ($resolve, $reject) use ($process, $loop, $options) { |
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$server = new Server('127.0.0.1:0', $loop); |
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$argvString = \escapeshellarg(ArgvEncoder::encode([ |
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'address' => $server->getAddress(), |
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])); |
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$process = new Process($process->getCommand() . ' ' . $argvString); |
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self::startParent($process, $server, $loop, $options)->done($resolve, $reject); |
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}); |
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} |
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/** |
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* @param string $process |
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* @param LoopInterface $loop |
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* @param array $options |
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* @param mixed $class |
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* @return Promise\PromiseInterface<Messenger> |
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*/ |
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public static function parentFromClass( |
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$class, |
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LoopInterface $loop, |
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array $options = [] |
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) { |
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2 |
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if (!is_subclass_of($class, 'WyriHaximus\React\ChildProcess\Messenger\ChildInterface')) { |
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throw new \Exception('Given class doesn\'t implement ChildInterface'); |
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} |
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return new Promise\Promise(function ($resolve, $reject) use ($class, $loop, $options) { |
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$server = new Server('127.0.0.1:0', $loop); |
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$options['address'] = $server->getAddress(); |
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1 |
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$template = '%s'; |
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1 |
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if (isset($options['cmdTemplate'])) { |
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$template = $options['cmdTemplate']; |
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unset($options['cmdTemplate']); |
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} |
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1 |
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$phpBinary = \escapeshellarg(PHP_BINARY . (PHP_SAPI === 'phpdbg' ? ' -qrr --' : '')); |
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$childProcessPath = \escapeshellarg(__DIR__ . DIRECTORY_SEPARATOR . 'child-process.php'); |
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$argvString = \escapeshellarg(ArgvEncoder::encode($options)); |
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$command = $phpBinary . ' ' . $childProcessPath; |
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$process = new Process( |
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sprintf( |
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$template, |
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$command . ' ' . $argvString |
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) |
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); |
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self::startParent($process, $server, $loop, $options)->then(function (Messenger $messenger) use ($class) { |
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return $messenger->rpc(MessengesFactory::rpc(Factory::PROCESS_REGISTER, [ |
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'className' => $class, |
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]))->then(function () use ($messenger) { |
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return Promise\resolve($messenger); |
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1 |
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}); |
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1 |
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})->done($resolve, $reject); |
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}); |
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} |
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/** |
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* @param LoopInterface $loop |
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* @param array $options |
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* @param callable $termiteCallable |
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* @return Promise\PromiseInterface<Messenger> |
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*/ |
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public static function child(LoopInterface $loop, array $options = [], callable $termiteCallable = null) |
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{ |
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return (new Connector($loop))->connect($options['address'])->then(function (ConnectionInterface $connection) use ($options) { |
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return new Messenger($connection, $options); |
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})->then(function (Messenger $messenger) use ($loop, $termiteCallable) { |
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if ($termiteCallable === null) { |
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$termiteCallable = function () use ($loop) { |
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$loop->addTimer( |
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self::TERMINATE_TIMEOUT, |
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[ |
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$loop, |
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'stop', |
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] |
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); |
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}; |
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} |
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$messenger->registerRpc( |
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Messenger::TERMINATE_RPC, |
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function (Payload $payload, Messenger $messenger) use ($termiteCallable) { |
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$messenger->emit('terminate', [ |
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$messenger, |
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]); |
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$termiteCallable($payload, $messenger); |
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return Promise\resolve([]); |
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} |
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); |
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return $messenger; |
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}); |
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} |
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private static function startParent( |
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Process $process, |
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Server $server, |
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LoopInterface $loop, |
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array $options |
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) { |
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return new Promise\Promise(function ($resolve, $reject) use ($process, $server, $loop, $options) { |
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$server->on( |
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'connection', |
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function (ConnectionInterface $connection) use ($server, $resolve, $reject, $options) { |
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$server->close(); |
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$messenger = new Messenger($connection, $options); |
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$resolve($messenger); |
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} |
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); |
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$server->on('error', function ($et) use ($reject) { |
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$reject($et); |
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}); |
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$process->start($loop); |
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}); |
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} |
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} |
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WyriHaximus /
reactphp-child-process-messenger
Loading history...
Let’s assume that you have a directory layout like this:
. |-- OtherDir | |-- Bar.php | `-- Foo.php `-- SomeDir `-- Foo.phpand let’s assume the following content of
Bar.php:If both files
OtherDir/Foo.phpandSomeDir/Foo.phpare loaded in the same runtime, you will see a PHP error such as the following:PHP Fatal error: Cannot use SomeDir\Foo as Foo because the name is already in use in OtherDir/Foo.phpHowever, as
OtherDir/Foo.phpdoes not necessarily have to be loaded and the error is only triggered if it is loaded beforeOtherDir/Bar.php, this problem might go unnoticed for a while. In order to prevent this error from surfacing, you must import the namespace with a different alias: