AnyEvent-MP/MP/Node.pm

=head1 NAME

AnyEvent::MP::Node - a single processing node (CPU/process...)

=head1 SYNOPSIS

   use AnyEvent::MP::Node;

=head1 DESCRIPTION

=cut

package AnyEvent::MP::Node;

use common::sense;

use AE ();
use AnyEvent::Socket ();

use AnyEvent::MP::Transport ();

use base Exporter::;

our $VERSION = '0.0';

sub new {
   my ($class, $noderef) = @_;

   bless { noderef => $noderef }, $class
}

package AnyEvent::MP::Node::Direct;

use base "AnyEvent::MP::Node";

sub send {
   my ($self, $msg) = @_;

   if ($self->{transport}) {
      $self->{transport}->send ($msg);
   } elsif ($self->{queue}) {
      push @{ $self->{queue} }, $msg;
   } else {
      $self->{queue} = [$msg];
      $self->connect;
   }
}

sub set_transport {
   my ($self, $transport) = @_;

   delete $self->{trial};
   delete $self->{next_connect};

   if (
      exists $self->{remote_uniq}
      && $self->{remote_uniq} ne $transport->{remote_uniq}
   ) {
      # uniq changed, drop queue
      delete $self->{queue};
      #TODO: "DOWN"
   }

   $self->{remote_uniq} = $transport->{remote_uniq};
   $self->{transport}   = $transport;

   $transport->send ($_)
      for @{ delete $self->{queue} || [] };
}

sub clr_transport {
   my ($self) = @_;

   delete $self->{transport};

   $self->connect;
}

sub connect {
   my ($self) = @_;

   Scalar::Util::weaken $self;

   unless (exists $self->{n_noderef}) {
      (AnyEvent::MP::normalise_noderef ($self->{noderef}))->cb (sub {
         $self or return;
         my $noderef = shift->recv;

         $self->{n_noderef} = $noderef;

         $AnyEvent::MP::NODE{$_} = $self
            for split /,/, $noderef;

         $self->connect;
      });
      return;
   }

   $self->{retry} ||= [split /,/, $self->{n_noderef}];

   my $endpoint = shift @{ $self->{retry} };

   if (defined $endpoint) {
      $self->{trial}{$endpoint} ||= do {
         my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint
            or return;

         my ($w, $g);

         $w = AE::timer $AnyEvent::MP::CONNECT_TIMEOUT, 0, sub {
            delete $self->{trial}{$endpoint};
         };
         $g = AnyEvent::MP::Transport::mp_connect
            $host, $port,
            sub {
               delete $self->{trial}{$endpoint}
                  unless @_;
               $g = shift;
            };
         ;

         [$w, \$g]
      };
   } else {
      delete $self->{retry};
   }

   $self->{next_connect} = AE::timer $AnyEvent::MP::CONNECT_INTERVAL, 0, sub {
      $self->connect;
   };
}

package AnyEvent::MP::Node::Self;

use base "AnyEvent::MP::Node";

sub set_transport {
   die "FATAL error, set_transport was called";
}

sub send {
   AnyEvent::MP::_inject ($_[1]);
}

=head1 SEE ALSO

L<AnyEvent>.

=head1 AUTHOR

 Marc Lehmann <schmorp@schmorp.de>
 http://home.schmorp.de/

=cut

1

Revision:	1.4
Committed:	Sat Aug 1 15:04:30 2009 UTC (14 years, 10 months ago) by root
Branch:	MAIN
Changes since 1.3:	+2 -1 lines
Log Message:	* empty log message *
#	User	Rev	Content
1	root	1.1	=head1 NAME
2
3			AnyEvent::MP::Node - a single processing node (CPU/process...)
4
5			=head1 SYNOPSIS
6
7			use AnyEvent::MP::Node;
8
9			=head1 DESCRIPTION
10
11			=cut
12
13			package AnyEvent::MP::Node;
14
15			use common::sense;
16
17			use AE ();
18			use AnyEvent::Socket ();
19
20			use AnyEvent::MP::Transport ();
21
22			use base Exporter::;
23
24			our $VERSION = '0.0';
25
26			sub new {
27			my ($class, $noderef) = @_;
28
29			bless { noderef => $noderef }, $class
30			}
31
32			package AnyEvent::MP::Node::Direct;
33
34			use base "AnyEvent::MP::Node";
35
36			sub send {
37			my ($self, $msg) = @_;
38
39			if ($self->{transport}) {
40			$self->{transport}->send ($msg);
41			} elsif ($self->{queue}) {
42			push @{ $self->{queue} }, $msg;
43			} else {
44			$self->{queue} = [$msg];
45			$self->connect;
46			}
47			}
48
49			sub set_transport {
50			my ($self, $transport) = @_;
51
52			delete $self->{trial};
53			delete $self->{next_connect};
54
55			if (
56			exists $self->{remote_uniq}
57			&& $self->{remote_uniq} ne $transport->{remote_uniq}
58			) {
59			# uniq changed, drop queue
60			delete $self->{queue};
61			#TODO: "DOWN"
62			}
63
64			$self->{remote_uniq} = $transport->{remote_uniq};
65			$self->{transport} = $transport;
66
67			$transport->send ($_)
68			for @{ delete $self->{queue} \|\| [] };
69			}
70
71			sub clr_transport {
72			my ($self) = @_;
73
74			delete $self->{transport};
75	root	1.4
76			$self->connect;
77	root	1.1	}
78
79			sub connect {
80			my ($self) = @_;
81
82			Scalar::Util::weaken $self;
83
84			unless (exists $self->{n_noderef}) {
85			(AnyEvent::MP::normalise_noderef ($self->{noderef}))->cb (sub {
86			$self or return;
87			my $noderef = shift->recv;
88
89			$self->{n_noderef} = $noderef;
90
91			$AnyEvent::MP::NODE{$_} = $self
92			for split /,/, $noderef;
93
94			$self->connect;
95			});
96			return;
97			}
98
99			$self->{retry} \|\|= [split /,/, $self->{n_noderef}];
100
101			my $endpoint = shift @{ $self->{retry} };
102
103			if (defined $endpoint) {
104			$self->{trial}{$endpoint} \|\|= do {
105			my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint
106			or return;
107
108			my ($w, $g);
109
110			$w = AE::timer $AnyEvent::MP::CONNECT_TIMEOUT, 0, sub {
111			delete $self->{trial}{$endpoint};
112			};
113			$g = AnyEvent::MP::Transport::mp_connect
114			$host, $port,
115			sub {
116			delete $self->{trial}{$endpoint}
117			unless @_;
118			$g = shift;
119			};
120			;
121
122			[$w, \$g]
123			};
124			} else {
125			delete $self->{retry};
126			}
127
128			$self->{next_connect} = AE::timer $AnyEvent::MP::CONNECT_INTERVAL, 0, sub {
129			$self->connect;
130			};
131			}
132
133			package AnyEvent::MP::Node::Self;
134
135			use base "AnyEvent::MP::Node";
136
137			sub set_transport {
138			die "FATAL error, set_transport was called";
139			}
140
141			sub send {
142	root	1.2	AnyEvent::MP::_inject ($_[1]);
143	root	1.1	}
144
145			=head1 SEE ALSO
146
147			L<AnyEvent>.
148
149			=head1 AUTHOR
150
151			Marc Lehmann <schmorp@schmorp.de>
152			http://home.schmorp.de/
153
154			=cut
155
156			1
157