/**
* listen endpoint
*
* @param $channels list of channels
* @param null $callback
*/
public function listen($channels, $callback = null)
{
$endpoint = $this->makeEndpoint($this->listenServerOptions);
if (substr($this->listenServerOptions['path'], -1) != '/') {
$endpoint .= '/';
}
$endpoint .= implode(',', (array) $channels);
$response = $this->client->get($endpoint, ['debug' => $this->debug, 'stream' => true]);
$body = $response->getBody();
while (!$body->eof()) {
if (is_callable($callback)) {
call_user_func($callback, Utils::readline($body));
} else {
echo Utils::readline($body);
}
}
}
public function testReadsLineUntilFalseReturnedFromRead()
{
$s = $this->getMockBuilder('GuzzleHttp\\Stream\\Stream')->setMethods(['read', 'eof'])->disableOriginalConstructor()->getMock();
$s->expects($this->exactly(2))->method('read')->will($this->returnCallback(function () {
static $c = false;
if ($c) {
return false;
}
$c = true;
return 'h';
}));
$s->expects($this->exactly(2))->method('eof')->will($this->returnValue(false));
$this->assertEquals("h", Utils::readline($s));
}
public function testSkipsOverwrittenBytes()
{
$decorated = Stream::factory(implode("\n", array_map(function ($n) {
return str_pad($n, 4, '0', STR_PAD_LEFT);
}, range(0, 25))));
$body = new CachingStream($decorated);
$this->assertEquals("0000\n", Utils::readline($body));
$this->assertEquals("0001\n", Utils::readline($body));
// Write over part of the body yet to be read, so skip some bytes
$this->assertEquals(5, $body->write("TEST\n"));
$this->assertEquals(5, $this->readAttribute($body, 'skipReadBytes'));
// Read, which skips bytes, then reads
$this->assertEquals("0003\n", Utils::readline($body));
$this->assertEquals(0, $this->readAttribute($body, 'skipReadBytes'));
$this->assertEquals("0004\n", Utils::readline($body));
$this->assertEquals("0005\n", Utils::readline($body));
// Overwrite part of the cached body (so don't skip any bytes)
$body->seek(5);
$this->assertEquals(5, $body->write("ABCD\n"));
$this->assertEquals(0, $this->readAttribute($body, 'skipReadBytes'));
$this->assertEquals("TEST\n", Utils::readline($body));
$this->assertEquals("0003\n", Utils::readline($body));
$this->assertEquals("0004\n", Utils::readline($body));
$this->assertEquals("0005\n", Utils::readline($body));
$this->assertEquals("0006\n", Utils::readline($body));
$this->assertEquals(5, $body->write("1234\n"));
$this->assertEquals(5, $this->readAttribute($body, 'skipReadBytes'));
// Seek to 0 and ensure the overwritten bit is replaced
$body->seek(0);
$this->assertEquals("0000\nABCD\nTEST\n0003\n0004\n0005\n0006\n1234\n0008\n0009\n", $body->read(50));
// Ensure that casting it to a string does not include the bit that was overwritten
$this->assertContains("0000\nABCD\nTEST\n0003\n0004\n0005\n0006\n1234\n0008\n0009\n", (string) $body);
}
/**
* Stream processor
*
* @access protected
* @param string $endpoint Streaming API endpoint
* @param Closure $handler Data handler
* @param \GuzzleHttp\Stream\StreamInterface $stream
* @return void
*/
protected function processor($endpoint, Closure $handler, StreamInterface $stream)
{
$stalled = time();
while (($line = Utils::readline($stream)) !== false) {
if (empty($line)) {
if (time() - $stalled > $this->stallTimeout) {
break;
}
continue;
}
// pass each line to the data handler
$handler(json_decode($line, $this->messageAsArray));
if ($this->triggerReconnection($endpoint)) {
break;
}
$stalled = time();
}
}
