Brian Aker > Gearman-XS > Gearman::XS::Worker

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Module Version: 0.15   Source  

NAME ^

Gearman::XS::Worker - Perl worker for gearman using libgearman

SYNOPSIS ^

  use Gearman::XS qw(:constants);
  use Gearman::XS::Worker;

  $worker = new Gearman::XS::Worker;

  $ret = $worker->add_server($host, $port);
  if ($ret != GEARMAN_SUCCESS)
  {
    printf(STDERR "%s\n", $worker->error());
    exit(1);
  }

  $ret = $worker->add_function("reverse", 0, \&reverse, $options);
  if ($ret != GEARMAN_SUCCESS)
  {
    printf(STDERR "%s\n", $worker->error());
  }

  while (1)
  {
    my $ret = $worker->work();
    if ($ret != GEARMAN_SUCCESS)
    {
      printf(STDERR "%s\n", $worker->error());
    }
  }

  sub reverse {
    $job = shift;

    $workload = $job->workload();
    $result   = reverse($workload);

    printf("Job=%s Function_Name=%s Workload=%s Result=%s\n",
            $job->handle(), $job->function_name(), $job->workload(), $result);

    return $result;
  }

DESCRIPTION ^

Gearman::XS::Worker is a worker class for the Gearman distributed job system using libgearman.

CONSTRUCTOR ^

Gearman::XS::Worker->new()

Returns a Gearman::XS::Worker object.

METHODS ^

$worker->add_server($host, $port)

Add a job server to a worker. This goes into a list of servers than can be used to run tasks. No socket I/O happens here, it is just added to a list. Returns a standard gearman return value.

$worker->add_servers($servers)

Add a list of job servers to a worker. The format for the server list is: SERVER[:PORT][,SERVER[:PORT]]... No socket I/O happens here, it is just added to a list. Returns a standard gearman return value.

$worker->remove_servers()

Remove all servers currently associated with the worker.

$worker->echo($data)

Send data to all job servers to see if they echo it back. This is a test function to see if job servers are responding properly. Returns a standard gearman return value.

$worker->add_function($function_name, $timeout, $function, $function_args)

Register and add callback function for worker. Returns a standard gearman return value.

$worker->work()

Wait for a job and call the appropriate callback function when it gets one. Returns a standard gearman return value.

$worker->grab_job()

Get a job from one of the job servers. Returns a standard gearman return value.

$worker->error()

Return an error string for the last error encountered.

$worker->options()

Get options for a worker.

$worker->set_options($options)

Set options for a worker.

$worker->add_options($options)

Add options for a worker.

$worker->remove_options($options)

Remove options for a worker.

$worker->timeout()

Get current socket I/O activity timeout value. Returns Timeout in milliseconds to wait for I/O activity.

$worker->set_timeout($timeout)

Set socket I/O activity timeout for connections in milliseconds.

$worker->register($function_name, $timeout)

Register function with job servers with an optional timeout. The timeout specifies how many seconds the server will wait before marking a job as failed. Returns a standard gearman return value.

$worker->unregister($function_name)

Unregister function with job servers. Returns a standard gearman return value.

$worker->unregister_all()

Unregister all functions with job servers. Returns a standard gearman return value.

$worker->function_exist($function_name)

See if a function exists in the server. Returns 1 if the function exists, empty string if not.

$worker->wait()

When in non-blocking I/O mode, wait for activity from one of the servers.

$worker->set_log_fn($function, $verbose)

Set logging function.

BUGS ^

Any in libgearman plus many others of my own.

COPYRIGHT ^

Copyright (C) 2013 Data Differential, ala Brian Aker, http://datadifferential.com/ Copyright (C) 2009-2010 Dennis Schoen

This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself, either Perl version 5.8.9 or, at your option, any later version of Perl 5 you may have available.

WARRANTY ^

This is free software. IT COMES WITHOUT WARRANTY OF ANY KIND.

LICENSE ^

This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

AUTHOR ^

Brian Aker <brian@tangent.org>

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