Daisuke Murase > AnyEvent-Gearman > AnyEvent::Gearman::Client

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Source   Latest Release: AnyEvent-Gearman-0.10

NAME ^

AnyEvent::Gearman::Client - Gearman client for AnyEvent application

SYNOPSIS ^

    use AnyEvent::Gearman::Client;
    
    # create greaman client
    my $gearman = AnyEvent::Gearman::Client->new(
        job_servers => ['127.0.0.1', '192.168.0.1:123'],
    );
    
    # start job
    $gearman->add_task(
        $function => $workload,
        on_complete => sub {
            my $res = $_[1];
        },
        on_fail => sub {
            # job failed
        },
    );
    
    # start background job
    $gearman->add_task_bg(
        $function => $workload,
    );

DESCRIPTION ^

This is Gearman client module for AnyEvent applications.

SEE ALSO ^

Gearman::Client::Async, this module provides same functionality for Danga::Socket applications.

METHODS ^

new(%options)

Create gearman client object.

    my $gearman = AnyEvent::Gearman::Client->new(
        job_servers => ['127.0.0.1', '192.168.0.1:123'],
    );

Available options are:

job_servers => 'ArrayRef',

List of gearman servers. 'host:port' or just 'host' formats are allowed. In latter case, gearman default port 4730 will be used.

You should set at least one job_server.

prefix => 'Str',

Sets the namespace / prefix for the function names. This is useful for sharing job servers between different applications or different instances of the same application (different development sandboxes for example).

The namespace is currently implemented as a simple tab separated concatenation of the prefix and the function name.

add_task($function, $workload, %callbacks)

Start new job and wait results in %callbacks

    $gearman->add_task(
        $function => $workload,
        on_complete => sub {
            my $result = $_[1],
        },
        on_fail => sub {
            # job failled
        },
    );

$function is a worker function name, and $workload is a data that will be passed to worker.

%callbacks is set of callbacks called by job events. Available callbacks are:

on_complete => $cb->($self, $result)

Called when the job is completed. $result is some results data which is set by $job->complete($result) in worker.

on_fail => $cb->($self, $reason)

Called when the job is failed. $reason is empty if its threw by worker. I don't know why but gearman spec say so. Considering to use on_warning below for some failing notify.

on_warning => $cb->($self, $warning)

Called when $job->warning($warning) called in worker.

on_data => $cb->($self, $data)

Called when $job->data($data) called in worker.

on_status => $cb->($self, $numerator, $denominator)

Called when $job->status($numerator, $denominator) called in worker

on_created => $cb->($self)

Called when the servers reports that the task was created successfully. Updates the Task object with the server assigned job_handle.

You should to set on_complete and on_fail at least.

add_task_bg($function, $workload, %callbacks)

Starts a new background job. The parameters are the same as add_task($function, $workload, %callbacks), but the only callback that is called is on_created.

    $gearman->add_task_bg(
        $function => $workload,
        on_created => sub {
            my ($task) = @_;
        },
    );

AUTHOR ^

Daisuke Murase <typester@cpan.org>

Pedro Melo <melo@cpan.org>

COPYRIGHT AND LICENSE ^

Copyright (c) 2009 by KAYAC Inc.

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

The full text of the license can be found in the LICENSE file included with this module.

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