PHP-FPM compatibility

[iorsa]

Hi,

I'm stacked at situation where I can't use this beautiful library.

I have PHP 7.0.32 with php-fpm enabled.
Here is additional information about extensions directly from phpinfo:

//
PHP libuv Extension
libuv Support enabled
Version 0.2.2
libuv Version 1.26

//
eio
eio support enabled
Debug support disabled
Version 2.0.4

//
event
Event support enabled
Sockets support enabled
Debug support disabled
Extra functionality support including HTTP, DNS, and RPC enabled
OpenSSL support enabled
Thread safety support disabled
Extension version 2.4.2
libevent2 headers version 2.0.19-stable

//
libevent
libevent support enabled
extension version 0.2.0-dev
Revision $Revision$
libevent version 2.1.8-stable

Here is the code I'm using:

<?php

require __DIR__ . '/vendor/autoload.php';

$loop = \React\EventLoop\Factory::create();

// I tried various loop implementations, but all next produce 'Timed out after 15 seconds' error message
//
//$loop = new \React\EventLoop\ExtUvLoop();
//$loop = new \React\EventLoop\StreamSelectLoop();
//$loop = new \React\EventLoop\ExtEventLoop();

// This loop implementations doesn't work at all
//
//$loop = new \React\EventLoop\ExtEvLoop();// Class 'EvLoop' not found
//$loop = new \React\EventLoop\ExtLibevLoop();// Fatal error: Uncaught BadMethodCallException: Cannot create ExtLibevLoop, ext-libev extension missing
//$loop = new \React\EventLoop\ExtLibeventLoop();// 502

// With default adapter it hangs forever
//
//$filesystem = \React\Filesystem\Filesystem::create($loop);

// With this adapter it produce 'Timed out after 15 seconds' error message
$adapter = new \React\Filesystem\ChildProcess\Adapter($loop);
$filesystem = \React\Filesystem\Filesystem::createFromAdapter($adapter);

echo 'Using ', get_class($filesystem->getAdapter()), '<br/>';

$filename = __DIR__ . '/test_putcontents.txt';

$contents = 'contents';

$filesystem->file($filename)
->putContents($contents)
->then(
	function () use ($filename)
	{
		echo "filename {$filename} written<br/>";
	},
	function (Exception $e)
	{
		echo $e->getMessage() . '<br/>';
		echo $e->getTraceAsString() . '<br/>';
	}
)
->done(
	function($someValue)
	{
		$error_or_not = "error_or_not resolved with someValue: {$someValue}<br/>";
		
		echo $error_or_not."<br/>";
	},
	function($someReason) use ($filename)
	{
		$error_or_not = "error_or_not rejected with someReason: {$someReason}<br/>";
		
		echo $error_or_not."<br/>";
	}
);

$loop->run();

?>

Here are my results with various loop implementations

Using React\Filesystem\ChildProcess\Adapter
Timed out after 15 seconds
#0 /var/www/user/data/www/vendor/react/event-loop/src/ExtUvLoop.php(119): React\Promise\Timer\{closure}(Object(React\EventLoop\Timer\Timer)) #1 [internal function]: React\EventLoop\ExtUvLoop->React\EventLoop\{closure}(Object(UVTimer)) #2 /var/www/user/data/www/vendor/react/event-loop/src/ExtUvLoop.php(230): uv_run(Object(UVLoop), 1) #3 /var/www/user/data/www/test_write_file_new.php(88): React\EventLoop\ExtUvLoop->run() #4 {main}
error_or_not resolved with someValue:

Using React\Filesystem\ChildProcess\Adapter
Timed out after 15 seconds
#0 /var/www/user/data/www/vendor/react/event-loop/src/Timer/Timers.php(96): React\Promise\Timer\{closure}(Object(React\EventLoop\Timer\Timer)) #1 /var/www/user/data/www/vendor/react/event-loop/src/StreamSelectLoop.php(184): React\EventLoop\Timer\Timers->tick() #2 /var/www/user/data/www/test_write_file_new.php(88): React\EventLoop\StreamSelectLoop->run() #3 {main}
error_or_not resolved with someValue:

Using React\Filesystem\ChildProcess\Adapter
Timed out after 15 seconds
#0 /var/www/user/data/www/vendor/react/event-loop/src/ExtEventLoop.php(243): React\Promise\Timer\{closure}(Object(React\EventLoop\Timer\Timer)) #1 [internal function]: React\EventLoop\ExtEventLoop->React\EventLoop\{closure}(-1, 1, Object(React\EventLoop\Timer\Timer)) #2 /var/www/user/data/www/vendor/react/event-loop/src/ExtEventLoop.php(204): EventBase->loop(1) #3 /var/www/user/data/www/test_write_file_new.php(92): React\EventLoop\ExtEventLoop->run() #4 {main}
error_or_not resolved with someValue:

I'm using next versions of libraries:

• react/event-loop v1.1.0 a0ecac955c67b57c40fe4a1b88a7cca1b58c982d
• react/filesystem v0.1.2 766cdef

Do you need any additional information?

[WyriHaximus]

You mentioned PHP-FPM, does this mean what you're trying to do runs in PHP-FPM?

[iorsa]

Yes.

[WyriHaximus]

Hmm ok, just FYI we don't test anything in PHP-FPM, it shouldn't matter tho.

[iorsa]

Well, I should, first of all, check the same code with PHP in CLI mode, to exclude php-fpm compatibility.
I've checked it recently and can confirm that in CLI it works as expected with each adapter (ChildProcess, UV and EIO), so the issue is related to php-fpm compatibility.

Though, I'm using php-fpm with other reactphp libraries (event-loop, promises, mysql, http-client/buzz-browser) almost everyday over 6 months and can't remember similar problems, so it may depend only on this (filesystem) library.