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#!/usr/local/bin/perl -w |
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# |
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# This example is really just for fun. It demonstrates how the PoCo::Election::Bully module works. |
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# Although we use two Bully Component instances in this example, in normal situations you would |
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# probably have one bully component per POE instance since the module was designed for distributed |
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# coordination between POE processes. Don't let me stop you from being creative with its use though. ;) |
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# |
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# $Id: simpsons.pl,v 1.0 2002-06-03 15:37:19+02 amo Exp amo $ |
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# |
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|
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use strict; |
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|
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use POE::Component::Election::Bully; |
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use POE; |
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|
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# these are the nodes participating in the election process |
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my $node1 = new POE::Component::Election::Bully::Node(['localhost', 5122, 1]); |
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my $node2 = new POE::Component::Election::Bully::Node(['localhost', 5121, 2]); |
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|
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my $n = 0; |
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my $passes = 0; |
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|
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POE::Session->create |
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( inline_states => |
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{ |
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_start => \&start_session, |
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start_election1=> \&start_election1, |
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start_election2=> \&start_election2, |
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elected1 => \&election_results1, |
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elected2 => \&election_results2, |
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coup1 => \&coup1, |
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coup2 => \&coup2, |
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do_work1 => \&do_work1, |
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do_work2 => \&do_work2, |
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vacation => \&vacation, |
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back_to_work => \&start_session, |
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} |
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); |
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|
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$poe_kernel->run(); |
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|
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exit; |
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|
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|
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#--- States |
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|
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sub start_session { |
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my ($kernel, $state) = @_[KERNEL, STATE]; |
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|
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if($state ne 'back_to_work') { |
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print "Nelson walks outside waiting for his first victim."; |
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} |
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else { |
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print "Nelson comes running back outside."; |
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} |
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|
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print " (restarts the election)\n"; |
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|
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$_[KERNEL]->yield('start_election2') unless $state eq 'back_to_work'; |
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$_[KERNEL]->delay_add('start_election1', 5); |
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} |
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|
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sub start_election1 { |
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POE::Component::Election::Bully->new |
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( Alias => 'component1', |
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Port => 5121, |
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Priority => 2, |
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ElectionState => 'elected1', |
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CoupState => 'coup1', |
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RestartTimer => 3, |
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NotifyTimer => 3, |
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); |
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$_[KERNEL]->post('component1', 'start_election', $node1); |
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} |
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|
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sub start_election2 { |
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POE::Component::Election::Bully->new |
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( Alias => 'component2', |
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Port => 5122, |
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Priority => 1, |
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ElectionState => 'elected2', |
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CoupState => 'coup2', |
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RestartTimer => 3, |
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NotifyTimer => 3, |
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); |
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$_[KERNEL]->post('component2', 'start_election', $node2); |
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} |
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|
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sub election_results1 { |
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print "Nelson runs over and takes Milhouse's milk money from his pocket. (Nelson elected)\n"; |
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$_[KERNEL]->delay_add('do_work1', 5); |
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$_[KERNEL]->delay_add('vacation', 9); |
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} |
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|
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sub election_results2 { |
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if(++$passes == 1) { |
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print "Milhouse starts to walk past Nelson's house."; |
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} |
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else { |
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print "Milhouse trys to sneak by Nelson's house."; |
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} |
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print " (Milhouse elected)\n"; |
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$_[KERNEL]->delay_add('do_work2', 5); |
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} |
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|
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sub do_work1 { |
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print "Nelson waits outside for Milhouse to return with more milk money. (Nelson does some work)\n"; |
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$_[KERNEL]->delay_add('do_work1', 5); |
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} |
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|
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sub do_work2 { |
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if($n == 5) { |
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print "Milhouse decides to go home and stay there forever\n"; |
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$_[KERNEL]->delay('do_work2'); |
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$_[KERNEL]->post('component2', 'stop_election'); |
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return; |
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} |
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|
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my @worries = ( |
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"Milhouse starts to get really scared.", |
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"Milhouse starts breathing very quickly." |
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); |
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print $worries[int(rand($#worries))]; |
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print " (Milhouse does some work)\n"; |
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$_[KERNEL]->delay_add('do_work2', 5); |
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} |
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|
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sub coup1 { |
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print "Nelson just go bullied! (Nelson was bullied)\n"; |
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$_[KERNEL]->delay('do_work1'); |
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} |
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|
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sub coup2 { |
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print "Milhouse starts crying and runs home to his mother. (Millhouse was bullied)\n"; |
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$_[KERNEL]->delay('do_work2'); |
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} |
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|
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sub vacation { |
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if (++ $n < 5) { |
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print "Nelson decides to go back inside and watch from there. (Nelson pulls out of the election temporarily)\n"; |
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$_[KERNEL]->delay('do_work1'); |
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$_[KERNEL]->post('component1', 'stop_election'); |
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$_[KERNEL]->delay_add('back_to_work', 5); |
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} |
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else { |
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print "Nelson gets bored and goes to school. (Nelson pulls out of the election permanently)\n"; |
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$_[KERNEL]->delay('do_work1'); |
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$_[KERNEL]->post('component1', 'stop_election'); |
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} |
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} |
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|
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__END__ |
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