Frédéric Demians

NAME

AnyEvent::Processor - Base class to define an event-driven (AnyEvent) task that could periodically be interrupted by a watcher

VERSION

version 0.006

SYNOPSIS

  package FridgeMonitoring;
  
  use Moose;
  extends 'AnyEvent::Processor';
  use TemperatureSensor;
  
  has sensors => (is => 'rw', isa => 'ArrayRef[TemperatureSensor]');
  has min => (is => 'rw', isa => 'Int', default => '10');
  has max => (is => 'rw', isa => 'Int', default => '20');
  
  
  sub process {
      my $self = shift;
  
      my @failed;
      for my $sensor ( @{$self->sensors} ) {
          next if $self->sensor->temperature >= $self->min &&
                  $self->sensor->temperature <= $self->max;
          push @failed, $sensor;
      }
      if ( @failed ) {
          # Send an email to someone with the list of failed fridges
      }
  }
  
  sub process_message {
      my $self = shift;
      say "[", $self->count, "] Fridges testing";
  }

package Main;

use FridgeMonitoring;

my $processor = FridgeMonitoring->new( sensors => # Get a list of fridge sensors from somewhere min => 0, max => 40, ); $processor->run();

DESCRIPTION

A processor task based on this class process anything that can be divided into processing clusters. Each cluster is processed one by one by calling the process() method. A count is incremented at the end of each cluster. By default, a AnyEvent::Processor::Watcher is associated with the class, interrupting the processing each second for calling process_message.

ATTRIBUTES

verbose

Verbose mode. In this mode an AnyEvent::Processor::Watcher is automatically created, with a 1s timeout, and action directly sent to this class. You can create your own watcher subclassing AnyEvent::Processor::Watcher.

watcher

An AnyEvent::Processor::Watcher.

count

Number of items which have been processed.

blocking

Is it a blocking task (not a task). False by default.

METHODS

run

Run the process.

start_process

Something to do at beginning of the process.

start_message

Something to say about the process. Called by default watcher when verbose mode is enabled. By default, just send to STDOUT 'Start process...'. Your class can display another message, or do something else, like sending an email, or a notification to a monitoring system like Nagios.

process

Process something and increment count. This method has to be surclassed by you class if you want to do someting else than incrementing the count attribute.

process_message

Say something about the process. Called by default watcher (verbose mode) each 1s. By default, just display the count value. Your processor can display something else than just the number of processing clusters already processed. If your processor monitor the temperature of your fridge, you can display it...

end_process

Do something at the end of the process.

end_message

Say something at the end of the process. Called by default watcher.

SEE ALSO

AUTHOR

Frédéric Demians <f.demians@tamil.fr>

COPYRIGHT AND LICENSE

This software is Copyright (c) 2015 by Fréderic Demians.

This is free software, licensed under:

  The GNU General Public License, Version 3, June 2007

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