/**
* Create a new file driven handler instance.
*
* @param \Illuminate\Filesystem\Filesystem $files
* @param React\EventLoop\LoopInterface $loop
* @param string $path
*
* @return void
*/
public function __construct(Factory $factory, LoopInterface $loop, Server $server, $lifetime)
{
$this->factory = $factory;
$this->lifetime = $lifetime;
$this->server = $server;
$this->loop = $loop;
// PING redis connection every 5 minutes
// and try to reconnect on connection error
$this->timer = $loop->addPeriodicTimer(60 * 1, function () use($server) {
$this->promise->then(function ($client) use($server) {
$client->PING()->then(function ($pong) use($server) {
$server->log('Redis server responded ping with: %s', [$pong]);
return $pong == 'PONG';
}, function ($e) {
return $this->reconnectByError($e);
});
});
});
// server statistics for redis connection
$this->loop->addPeriodicTimer(60 * 30, function () {
$this->server->log('Server statistics to the last 30 minutes.');
$this->server->log('Best time of %fs, poor time of %fs and a average of %f seconds for total %d requests.', array_values($this->statistics));
$this->statistics = array('best' => 0, 'poor' => 0, 'avg' => 0, 'total' => 0);
});
}
/**
* Allow to apply callable when the promise resolve.
*
* @param callable|null $onFulfilled
* @param callable|null $onRejected
*
* @return Promise
*/
public function then(callable $onFulfilled = null, callable $onRejected = null)
{
$this->promise->then(function () use($onFulfilled) {
if (null !== $onFulfilled) {
call_user_func($onFulfilled, $this->response);
}
}, function () use($onRejected) {
if (null !== $onRejected) {
call_user_func($onRejected, $this->exception);
}
});
return $this;
}
public function parsePlainStream(PromiseInterface $promise)
{
// text/plain
$out = new ReadableStream();
// try to cancel promise once the stream closes
if ($promise instanceof CancellablePromiseInterface) {
$out->on('close', function () use($promise) {
$promise->cancel();
});
}
$promise->then(function ($response) use($out) {
$out->close();
}, function ($error) use($out) {
$out->emit('error', array($error, $out));
$out->close();
}, function ($progress) use($out) {
if (is_array($progress) && isset($progress['responseStream'])) {
$stream = $progress['responseStream'];
/* @var $stream React\Stream\Stream */
// hack to do not buffer stream contents in body
$stream->removeAllListeners('data');
// got a streaming HTTP response => forward each data chunk to the resulting output stream
$stream->on('data', function ($data) use($out) {
$out->emit('data', array($data, $out));
});
}
});
return $out;
}
/**
* Returns a readable plain text stream for the given ResponseInterface
*
* @param PromiseInterface $promise Promise<ResponseInterface>
* @return ReadableStreamInterface
*/
public function parsePlainStream(PromiseInterface $promise)
{
// text/plain
return Stream\unwrapReadable($promise->then(function (ResponseInterface $response) {
return $response->getBody();
}));
}
function assertOkay(PromiseInterface $promise, $name = 'end')
{
return $promise->then(function ($stream) use($name) {
echo 'EXPECTED: connection to ' . $name . ' OK' . PHP_EOL;
$stream->close();
}, function (Exception $error) use($name) {
echo 'FAIL: connection to ' . $name . ' failed: ';
ex($error);
});
}
/**
* Instantiate new unwrapped writable stream for given `Promise` which resolves with a `WritableStreamInterface`.
*
* @param PromiseInterface $promise Promise<WritableStreamInterface, Exception>
*/
public function __construct(PromiseInterface $promise)
{
$out = $this;
$store =& $this->stream;
$buffer =& $this->buffer;
$ending =& $this->ending;
$closed =& $this->closed;
$this->promise = $promise->then(function ($stream) {
if (!$stream instanceof WritableStreamInterface) {
throw new InvalidArgumentException('Not a writable stream');
}
return $stream;
})->then(function (WritableStreamInterface $stream) use($out, &$store, &$buffer, &$ending, &$closed) {
// stream is already closed, make sure to close output stream
if (!$stream->isWritable()) {
$out->close();
return $stream;
}
// resolves but output is already closed, make sure to close stream silently
if ($closed) {
$stream->close();
return $stream;
}
// forward drain events for back pressure
$stream->on('drain', function () use($out) {
$out->emit('drain', array($out));
});
// error events cancel output stream
$stream->on('error', function ($error) use($out) {
$out->emit('error', array($error, $out));
$out->close();
});
// close both streams once either side closes
$stream->on('close', array($out, 'close'));
$out->on('close', array($stream, 'close'));
if ($buffer !== '') {
// flush buffer to stream and check if its buffer is not exceeded
$drained = $stream->write($buffer) !== false;
$buffer = '';
if ($drained) {
// signal drain event, because the output stream previous signalled a full buffer
$out->emit('drain', array($out));
}
}
if ($ending) {
$stream->end();
} else {
$store = $stream;
}
return $stream;
}, function ($e) use($out) {
$out->emit('error', array($e, $out));
$out->close();
});
}
/**
* Converts a Promise to an Observable sequence
*
* @param \React\Promise\PromiseInterface $promise
* @return \Rx\Observable\AnonymousObservable
*/
public static function toObservable(PromiseInterface $promise)
{
return Observable::defer(function () use($promise) {
$subject = new AsyncSubject();
$promise->then(function ($value) use($subject) {
$subject->onNext($value);
$subject->onCompleted();
}, [$subject, "onError"]);
return $subject;
});
}
public function __construct(ReactPromise $promise)
{
$promise->then(function (ResponseInterface $response) {
$this->state = Promise::FULFILLED;
$this->response = $response;
}, function (\Exception $error) {
$this->state = Promise::REJECTED;
$this->exception = $error;
});
$this->promise = $promise;
}
public function __construct(React\Promise\PromiseInterface $promise)
{
$promise->then(function ($data) {
$this->isResolved = TRUE;
$this->data = $data;
}, function ($err) {
$this->isResolved = TRUE;
$this->error = $err;
});
$this->promise = $promise;
}
/**
* Converts a Promise to an Observable sequence
*
* @param \React\Promise\PromiseInterface $promise
* @return \Rx\Observable\AnonymousObservable
*/
public static function toObservable(PromiseInterface $promise)
{
return Observable::defer(function () use($promise) {
$subject = new AsyncSubject();
$promise->then(function ($value) use($subject) {
$subject->onNext($value);
$subject->onCompleted();
}, function ($error) use($subject) {
$error = $error instanceof \Exception ? $error : new RejectedPromiseException($error);
$subject->onError($error);
});
return $subject;
});
}
private function addShadow()
{
// Get the result and error when the promise is resolved. Note that
// calling this function might trigger the resolution immediately.
$this->wrappedPromise->then(function ($value) {
$this->isRealized = true;
$this->result = $value;
$this->waitfn = $this->cancelfn = null;
}, function ($error) {
$this->isRealized = true;
$this->error = $error;
$this->waitfn = $this->cancelfn = null;
});
}
private function waitFor(PromiseInterface $promise)
{
$resolved = null;
$exception = null;
$promise->then(function ($c) use(&$resolved) {
$resolved = $c;
}, function ($error) use(&$exception) {
$exception = $error;
});
while ($resolved === null && $exception === null) {
self::$loop->tick();
}
if ($exception !== null) {
throw $exception;
}
return $resolved;
}
/**
* Instantiate new unwrapped readable stream for given `Promise` which resolves with a `ReadableStreamInterface`.
*
* @param PromiseInterface $promise Promise<ReadableStreamInterface, Exception>
*/
public function __construct(PromiseInterface $promise)
{
$out = $this;
$closed =& $this->closed;
$this->promise = $promise->then(function ($stream) {
if (!$stream instanceof ReadableStreamInterface) {
throw new InvalidArgumentException('Not a readable stream');
}
return $stream;
})->then(function (ReadableStreamInterface $stream) use($out, &$closed) {
// stream is already closed, make sure to close output stream
if (!$stream->isReadable()) {
$out->close();
return $stream;
}
// resolves but output is already closed, make sure to close stream silently
if ($closed) {
$stream->close();
return $stream;
}
// stream any writes into output stream
$stream->on('data', function ($data) use($out) {
$out->emit('data', array($data, $out));
});
// forward end events and close
$stream->on('end', function () use($out, &$closed) {
if (!$closed) {
$out->emit('end', array($out));
$out->close();
}
});
// error events cancel output stream
$stream->on('error', function ($error) use($out) {
$out->emit('error', array($error, $out));
$out->close();
});
// close both streams once either side closes
$stream->on('close', array($out, 'close'));
$out->on('close', array($stream, 'close'));
return $stream;
}, function ($e) use($out) {
$out->emit('error', array($e, $out));
$out->close();
});
}
/**
* block waiting for the given $promise to resolve
*
* @param PromiseInterface $promise
* @param LoopInterface $loop
* @return mixed returns whatever the promise resolves to
* @throws Exception when the promise is rejected
*/
function await(PromiseInterface $promise, LoopInterface $loop)
{
$wait = true;
$resolved = null;
$exception = null;
$promise->then(function ($c) use(&$resolved, &$wait, $loop) {
$resolved = $c;
$wait = false;
$loop->stop();
}, function ($error) use(&$exception, &$wait, $loop) {
$exception = $error;
$wait = false;
$loop->stop();
});
while ($wait) {
$loop->run();
}
if ($exception !== null) {
throw $exception;
}
return $resolved;
}
function timeout(PromiseInterface $promise, $time, LoopInterface $loop)
{
// cancelling this promise will only try to cancel the input promise,
// thus leaving responsibility to the input promise.
$canceller = null;
if ($promise instanceof CancellablePromiseInterface) {
$canceller = array($promise, 'cancel');
}
return new Promise(function ($resolve, $reject) use($loop, $time, $promise) {
$timer = $loop->addTimer($time, function () use($time, $promise, $reject) {
$reject(new TimeoutException($time, 'Timed out after ' . $time . ' seconds'));
if ($promise instanceof CancellablePromiseInterface) {
$promise->cancel();
}
});
$promise->then(function ($v) use($timer, $loop, $resolve) {
$loop->cancelTimer($timer);
$resolve($v);
}, function ($v) use($timer, $loop, $reject) {
$loop->cancelTimer($timer);
$reject($v);
});
}, $canceller);
}
private function getPromiseValue(PromiseInterface $promise)
{
$capturedValue = null;
$promise->then(function ($value) use(&$capturedValue) {
$capturedValue = $value;
});
return $capturedValue;
}
/**
* Return Promise that absorbs rejects, excluding fatal Throwable.
* @param PromiseInterface $promise
* @return PromiseInterface
*/
public static function safePromise(PromiseInterface $promise)
{
return $promise->then(null, function ($value) {
if (TypeUtils::isFatalThrowable($value)) {
throw $value;
}
return $value;
});
}
private function assertArraySubsetPromise($subset, PromiseInterface $promise)
{
$array = null;
$promise->then(function ($value) use(&$array) {
$array = $value->toArray();
});
$this->assertArraySubset($subset, $array);
}
/**
* @param PromiseInterface $promise
* @return Observable
*/
function fromPromise(PromiseInterface $promise)
{
return Observable::defer(function () use($promise) {
$subject = new AsyncSubject();
$promise->then(function ($res) use($subject) {
$subject->onNext($res);
$subject->onCompleted();
}, [$subject, 'onError']);
return $subject;
});
}
/**
* Process a result as a promise
*
* @param \React\Promise\PromiseInterface $promise
* @param \Thruway\Message\InvocationMessage $msg
* @param \Thruway\ClientSession $session
* @param array $registration
*/
private function processResultAsPromise(PromiseInterface $promise, InvocationMessage $msg, ClientSession $session, $registration)
{
$promise->then(function ($promiseResults) use($msg, $session) {
$options = new \stdClass();
if ($promiseResults instanceof Result) {
$yieldMsg = new YieldMessage($msg->getRequestId(), $options, $promiseResults->getArguments(), $promiseResults->getArgumentsKw());
} else {
$promiseResults = is_array($promiseResults) ? $promiseResults : [$promiseResults];
$promiseResults = !$this::is_list($promiseResults) ? [$promiseResults] : $promiseResults;
$yieldMsg = new YieldMessage($msg->getRequestId(), $options, $promiseResults);
}
$session->sendMessage($yieldMsg);
}, function ($e) use($msg, $session, $registration) {
if ($e instanceof \Exception) {
$this->processExceptionFromRPCCall($session, $msg, $registration, $e);
return;
}
$errorMsg = ErrorMessage::createErrorMessageFromMessage($msg);
$errorMsg->setErrorURI($registration['procedure_name'] . '.error');
$session->sendMessage($errorMsg);
}, function ($results) use($msg, $session, $registration) {
$options = new \stdClass();
$options->progress = true;
if ($results instanceof Result) {
$yieldMsg = new YieldMessage($msg->getRequestId(), $options, $results->getArguments(), $results->getArgumentsKw());
} else {
$results = is_array($results) ? $results : [$results];
$results = !$this::is_list($results) ? [$results] : $results;
$yieldMsg = new YieldMessage($msg->getRequestId(), $options, $results);
}
$session->sendMessage($yieldMsg);
});
}
/**
* Returns a promise that is invoked when the pool completed. There will be
* no passed value.
*
* {@inheritdoc}
*/
public function then(callable $onFulfilled = null, callable $onRejected = null, callable $onProgress = null)
{
return $this->promise->then($onFulfilled, $onRejected, $onProgress);
}
private function assertPromiseYields($expected, PromiseInterface $promise)
{
$id = sizeof($this->promiseExpectations);
$this->promiseExpectations[$id] = ['expected' => $expected];
$promise->then(function ($value) use($id, $expected) {
$this->promiseExpectations[$id]['actual'] = $value;
});
}