PHP 8.4.0 RC4 available for testing

    Client et agent Gearman simple, avec la soumission de tâches

    Exemple #1 Client et agent Gearman simple, avec la soumission de tâches

    Dans cet exemple, le client "reverse" a été étendu pour exécuter 2 tâches en parallèle. L'agent "reverse" est inchangé, mis à part qu'il retourne des données durant le processus.

    <?php

    # create the gearman client
    $gmc= new GearmanClient();

    # add the default server (localhost)
    $gmc->addServer();

    # register some callbacks
    $gmc->setCreatedCallback("reverse_created");
    $gmc->setDataCallback("reverse_data");
    $gmc->setStatusCallback("reverse_status");
    $gmc->setCompleteCallback("reverse_complete");
    $gmc->setFailCallback("reverse_fail");

    # set some arbitrary application data
    $data['foo'] = 'bar';

    # add two tasks
    $task= $gmc->addTask("reverse", "foo", $data);
    $task2= $gmc->addTaskLow("reverse", "bar", NULL);

    # run the tasks in parallel (assuming multiple workers)
    if (! $gmc->runTasks())
    {
    echo     "ERROR " . $gmc->error() . "\n";
    exit;
    }

    echo     "DONE\n";

    function     reverse_created($task)
    {
    echo     "CREATED: " . $task->jobHandle() . "\n";
    }

    function     reverse_status($task)
    {
    echo     "STATUS: " . $task->jobHandle() . " - " . $task->taskNumerator() .
    "/" . $task->taskDenominator() . "\n";
    }

    function     reverse_complete($task)
    {
    echo     "COMPLETE: " . $task->jobHandle() . ", " . $task->data() . "\n";
    }

    function     reverse_fail($task)
    {
    echo     "FAILED: " . $task->jobHandle() . "\n";
    }

    function     reverse_data($task)
    {
    echo     "DATA: " . $task->data() . "\n";
    }

    ?>
    <?php

    echo "Starting\n";

    # Crée un nouvel agent.
    $gmworker= new GearmanWorker();

    # Ajoute un serveur par défaut (localhost).
    $gmworker->addServer();

    # Enregistre la fonction "reverse" avecle serveur. Modifie la fonction de l'agent en
    # "reverse_fn_fast" pour être plus rapide sans affichage.
    $gmworker->addFunction("reverse", "reverse_fn");

    print     "Waiting for job...\n";
    while(    $gmworker->work())
    {
    if (    $gmworker->returnCode() != GEARMAN_SUCCESS)
    {
    echo     "return_code: " . $gmworker->returnCode() . "\n";
    break;
    }
    }

    function     reverse_fn($job)
    {
    echo     "Received job: " . $job->handle() . "\n";

    $workload = $job->workload();
    $workload_size = $job->workloadSize();

    echo     "Workload: $workload ($workload_size)\n";

    # Cette boucle n'est pas nécessaire, mais nous l'utilisons pour en comprendre le fonctionnement
    for ($x= 0; $x < $workload_size; $x++)
    {
    echo     "Sending status: " . ($x + 1) . "/$workload_size complete\n";
    $job->sendStatus($x+1, $workload_size);
    $job->sendData(substr($workload, $x, 1));
    sleep(1);
    }

    $result= strrev($workload);
    echo     "Result: $result\n";

    # Retourne ce que l'on veut au client.
    return $result;
    }

    # Une version plus simple et moins vebeuse de la fonction ci-dessus serait :
    function reverse_fn_fast($job)
    {
    return     strrev($job->workload());
    }

    ?>

    Résultat de l'exemple ci-dessus est similaire à :

    % php reverse_worker.php
Starting
Waiting for job...
Received job: H:foo.local:45
Workload: foo (3)
1/3 complete
2/3 complete
3/3 complete
Result: oof
Received job: H:foo.local:44
Workload: bar (3)
1/3 complete
2/3 complete
3/3 complete
Result: rab

    % php reverse_client_task.php
CREATED: H:foo.local:44
CREATED: H:foo.local:45
STATUS: H:foo.local:45 - 1/3
DATA: f
STATUS: H:foo.local:45 - 2/3
DATA: o
STATUS: H:foo.local:45 - 3/3
DATA: o
COMPLETE: H:foo.local:45, oof
STATUS: H:foo.local:44 - 1/3
DATA: b
STATUS: H:foo.local:44 - 2/3
DATA: a
STATUS: H:foo.local:44 - 3/3
DATA: r
COMPLETE: H:foo.local:44, rab
DONE

    Improve This Page

    Learn How To Improve This Page • Submit a Pull Request • Report a Bug
    ＋add a note

    User Contributed Notes 1 note

    up
    1
    septerrianin at mail dot ru
    6 years ago
    NOTE.
    The register of the callback functions needs BEFORE add a task.

    This example NOT working correctly:
    <?php
    # add tasks
    $task= $gmc->addTask("reverse", "foo", $data);

    # register some callbacks
    $gmc->setCreatedCallback("reverse_created");
    $gmc->setDataCallback("reverse_data");
    $gmc->setStatusCallback("reverse_status");
    $gmc->setCompleteCallback("reverse_complete");
    $gmc->setFailCallback("reverse_fail");

    # run the task
    $gmc->runTasks();
    ?>
    ＋add a note
    To Top