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

User Contributed Notes

stanislav dot reshetnev at gmail dot com 30-Oct-2014 04:07


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.

Karl Rixon 20-Oct-2014 02:57


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