Stomp::readFrame

stomp_read_frame

(PECL stomp >= 0.1.0)

Stomp::readFrame -- stomp_read_frame — Reads the next frame

Descrizione

Stile orientato agli oggetti (method):

public Stomp::readFrame(string $class_name = "stompFrame"): stompframe

Stile procedurale:

stomp_read_frame(resource $link): array

Reads the next frame. It is possible to instantiate an object of a specific class, and pass parameters to that class's constructor.

Elenco dei parametri

link: Solo stile procedurale: l'identificatore di connessione stomp restituito da stomp_connect().
class_name: The name of the class to instantiate. If not specified, a stompFrame object is returned.

Valori restituiti

Nota:
Può essere definita un'intestazione di transazione, che indica che la conferma del messaggio deve essere parte della transazione specificata.

Log delle modifiche

Versione	Descrizione
PECL stomp 0.4.0	`class_name` parameter was added.

Esempi

Example #1 Stile orientato agli oggetti

<?php

/* connection */
try {
    $stomp = new Stomp('tcp://localhost:61613');
} catch(StompException $e) {
    die('Connection failed: ' . $e->getMessage());
}

/* subscribe to messages from the queue 'foo' */
$stomp->subscribe('/queue/foo');

/* read a frame */
var_dump($stomp->readFrame());

/* close connection */
unset($stomp);

?>

Il precedente esempio visualizzerà qualcosa simile a:

object(StompFrame)#2 (3) {
  ["command"]=>
  string(7) "MESSAGE"
  ["headers"]=>
  array(5) {
    ["message-id"]=>
    string(41) "ID:php.net-55293-1257226743606-4:2:-1:1:1"
    ["destination"]=>
    string(10) "/queue/foo"
    ["timestamp"]=>
    string(13) "1257226805828"
    ["expires"]=>
    string(1) "0"
    ["priority"]=>
    string(1) "0"
  }
  ["body"]=>
  string(3) "bar"
}

Example #2 Stile procedurale

<?php

/* connection */
$link = stomp_connect('ssl://localhost:61612');

/* check connection */
if (!$link) {
    die('Connection failed: ' . stomp_connect_error());
}

/* subscribe to messages from the queue 'foo' */
stomp_subscribe($link, '/queue/foo');

/* read a frame */
$frame = stomp_read_frame($link);

/* close connection */
stomp_close($link);

?>

Il precedente esempio visualizzerà qualcosa simile a:

array(3) {
  ["command"]=>
  string(7) "MESSAGE"
  ["body"]=>
  string(3) "bar"
  ["headers"]=>
  array(6) {
    ["transaction"]=>
    string(2) "t1"
    ["message-id"]=>
    string(41) "ID:php.net-55293-1257226743606-4:3:-1:1:1"
    ["destination"]=>
    string(10) "/queue/foo"
    ["timestamp"]=>
    string(13) "1257227037059"
    ["expires"]=>
    string(1) "0"
    ["priority"]=>
    string(1) "0"
  }
}

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User Contributed Notes 1 note

down

hasan dot ucak at gmail dot com ¶

6 years ago

/* php.ini
[stomp]
stomp.default_connection_timeout_sec = 10
stomp.default_read_timeout_sec = 15

these values should not be left by default.
if queue server very busy and there is a lot message in queue ,
not respond to frame in two second.  
*/      

  try {
            $stomp = new Stomp(self::geturl, self::username, self::password,array('client-id'=> gethostname()."-".uniqid(mt_rand(), true)));

            $stomp->subscribe(self::getqueue, array('selector' => sprintf(self::selector, $queue_id)));

            /* read a frame */

            $frame = $stomp->readFrame();
            if ($frame) {
                $stomp->ack($frame);
                unset($stomp);
                return $frame;
            }
            unset($stomp);
            return false;
        } catch (StompException $e) {
            print ('Connection failed: ' . $e->getMessage());
            unset($stomp);
            return false;
        }

        /* close connection */
        unset($stomp);

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