Resilient PHP Task Runner: Run a task and retry while it fails for a period

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Version License PHP version Categories
resilient-task 1.0Custom (specified...5PHP 5, Language
Description Author

This class can be used to run a task and retry while it fails for a period.

It can take as parameter a closure function that executes a given task when it is called.

If the task fails by throwing an exception, this class can retry running that task again after a given period of time.

The class allows configuring the number of times that it will retry running a task that fails, as well the period of time that it waits between two attempts to retry.

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Details

Resilient Task

Build Status CodeCov Release PHPv Downloads

Resilient Task Runner, A circuit breaker implementation, highly configurable task runner with number of max retries, back-off factor, maximum sleep time, and starting sleep time.

Usage

Install the `eshta/resilient-task` package:

$ composer require eshta/resilient-task

Example

use GuzzleHttp\Exception\ConnectException;


$task = function() {
    try {
        $response = $client->request('GET', 'https://github.com/_abc_123_404');

        return $response;
    } catch (ConnectException $e) {
        echo Psr7\str($e->getRequest());
    }
};

$runner = new ResilientTaskRunner(10, 16, 0.5);
$response = $runner->run($task);

if (is_null($response)) {
    throw new MyFavouriteException('Service call failed!');
}
  • try 10 times at most
  • maximum sleep time between retries 16 seconds
  • first sleep time is half a second
  • back-off factor [2 default]: double sleeping time after each failed attempt

Note:: the runner will only stop when there is a non-null result returned by the task, or the max tries have been exhausted

Contributing

See CONTRIBUTING and Code of Conduct, if you want to make contribution (pull request) or just build and test project on your own.

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  Files folder image Files  /  src  
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  Plain text file ResilientTaskRunner.php Class Class source
  Plain text file RunnerInterface.php Class Class source

  Files folder image Files  /  tests  
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  Plain text file ResilientTaskRunnerTest.php Class Class source

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