GearmanClient::setCreatedCallback

(PECL gearman >= 0.5.0)

GearmanClient::setCreatedCallback — Set a callback for when a task is queued

说明

public GearmanClient::setCreatedCallback(string $callback): bool

Sets a function to be called when a task is received and queued by the Gearman job server. The callback should accept a single argument, a GearmanTask object.

参数

callback: A function to call

返回值

成功时返回 true，或者在失败时返回 false。

参见

GearmanClient::setDataCallback() - Callback function when there is a data packet for a task
GearmanClient::setCompleteCallback() - Set a function to be called on task completion
GearmanClient::setExceptionCallback() - Set a callback for worker exceptions
GearmanClient::setFailCallback() - Set callback for job failure
GearmanClient::setStatusCallback() - Set a callback for collecting task status
GearmanClient::setWarningCallback() - Set a callback for worker warnings
GearmanClient::setWorkloadCallback() - Set a callback for accepting incremental data updates

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User Contributed Notes 2 notes

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stanislav dot reshetnev at gmail dot com ¶

7 years ago


Callback can accept not only GearmanTask object, but it can recieve a variable from GearmanClient::addTask():

<?php
$client = new GearmanClient();
$client->addServer();

$client->setCreatedCallback(function(GearmanTask $task, $some_info) {
  // now we have $some_info
  // ...
});

$client->addTask($function_name, $workload, "some info");
?>

So, we can send to our anonymous function something like $workload, because we can't get it from GearmanTask object. It may be usefull for logging of tasks queuing.

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Karl Rixon ¶

7 years ago


Contrary to the documentation, this callback accepts an instance of \GearmanTask, not \GearmanClient.

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备份地址：http://www.lvesu.com/blog/php/gearmanclient.setcreatedcallback.php