GearmanClient::setCreatedCallback
(PECL gearman >= 0.5.0)
GearmanClient::setCreatedCallback — Set a callback for when a task is queued
说明
$callback
)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 GearmanClient oject.
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
用户评论:
[#1] stanislav dot reshetnev at gmail dot com [2014-10-30 16:07:11]
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.
[#2] Karl Rixon [2014-10-20 14:57:40]
Contrary to the documentation, this callback accepts an instance of \GearmanTask, not \GearmanClient.