Olivier Mengué > POE-Component-Schedule-0.95 > POE::Component::Schedule

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Module Version: 0.95   Source  

NAME ^

POE::Component::Schedule - Schedule POE events using DateTime::Set iterators

SYNOPSIS ^

    use POE qw(Component::Schedule);
    use DateTime::Set;

    POE::Session->create(
        inline_states => {
            _start => sub {
                $_[HEAP]{sched} = POE::Component::Schedule->add(
                    $_[SESSION], Tick => DateTime::Set->from_recurrence(
                        after      => DateTime->now,
                        before     => DateTime->now->add(seconds => 3),
                        recurrence => sub {
                            return $_[0]->truncate( to => 'second' )->add( seconds => 1 )
                        },
                    ),
                );
            },
            Tick => sub {
                print 'tick ', scalar localtime, "\n";
            },
            remove_sched => sub {
                # Three ways to remove a schedule
                # The first one is only for API compatibility with POE::Component::Cron
                $_[HEAP]{sched}->delete;
                $_[HEAP]{sched} = undef;
                delete $_[HEAP]{sched};
            },
            _stop => sub {
                print "_stop\n";
            },
        },
    );

    POE::Kernel->run();

DESCRIPTION ^

This component encapsulates a session that sends events to client sessions on a schedule as defined by a DateTime::Set iterator.

POE::Component::Schedule METHODS ^

spawn(Alias => name)

Start up the PoCo::Schedule background session with the given alias. Returns the back-end session handle.

No need to call this in normal use, add() and new() all crank one of these up if it is needed.

add($session, $event_name, $iterator, @event_args)

    my $sched = POE::Component::Schedule->add(
        $session,
        $event_name,
        $DateTime_Set_iterator,
        @event_args
    );

Add a set of events to the scheduler.

Returns a schedule handle. The event is automatically deleted when the handle is not referenced anymore.

new($session, $event_name, $iterator, @event_args)

new() is an alias for add().

SCHEDULE HANDLE METHODS ^

delete()

Removes a schedule using the handle returned from add() or new().

DEPRECATED: Schedules are now automatically deleted when they are not referenced anymore. So just setting the container variable to undef will delete the schedule.

SEE ALSO ^

POE, DateTime::Set, POE::Component::Cron.

SUPPORT ^

You can look for information at:

ACKNOWLEDGMENT & HISTORY ^

This module was a friendly fork of POE::Component::Cron to extract the generic parts and isolate the Cron specific code in order to reduce dependencies on other CPAN modules.

See https://rt.cpan.org/Ticket/Display.html?id=44442.

The orignal author of POE::Component::Cron is Chris Fedde.

POE::Component::Cron is now implemented as a class that inherits from POE::Component::Schedule.

Most of the POE::Component::Schedule internals have since been rewritten in 0.91_01 and we have now a complete test suite.

AUTHORS ^

Olivier Mengué, dolmen@cpan.org
Chris Fedde, cfedde@cpan.org

COPYRIGHT AND LICENSE ^

Copyright © 2009-2010 Olivier Mengué.
Copyright © 2007-2008 Chris Fedde.

This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself, either Perl version 5.8.3 or, at your option, any later version of Perl 5 you may have available.

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