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Comparing AnyEvent-MP/MP/Node.pm (file contents):
Revision 1.4 by root, Sat Aug 1 15:04:30 2009 UTC vs.
Revision 1.31 by root, Fri Aug 28 23:06:33 2009 UTC

1=head1 NAME 1=head1 NAME
2 2
3AnyEvent::MP::Node - a single processing node (CPU/process...) 3AnyEvent::MP::Node - represent a node
4 4
5=head1 SYNOPSIS 5=head1 SYNOPSIS
6 6
7 use AnyEvent::MP::Node; 7 use AnyEvent::MP::Node;
8 8
9=head1 DESCRIPTION 9=head1 DESCRIPTION
10 10
11This is an internal utility module, horrible to look at, so don't.
12
11=cut 13=cut
12 14
13package AnyEvent::MP::Node; 15package AnyEvent::MP::Node;
14 16
15use common::sense; 17use common::sense;
16 18
17use AE (); 19use AE ();
20use AnyEvent::Util ();
18use AnyEvent::Socket (); 21use AnyEvent::Socket ();
19 22
20use AnyEvent::MP::Transport (); 23use AnyEvent::MP::Transport ();
21 24
22use base Exporter::;
23
24our $VERSION = '0.0';
25
26sub new { 25sub new {
27 my ($class, $noderef) = @_; 26 my ($self, $id) = @_;
28 27
29 bless { noderef => $noderef }, $class 28 $self = bless { id => $id }, $self;
30}
31 29
30 $self->init;
31 $self->transport_reset;
32
33 $self
34}
35
36sub init {
37 #
38}
39
40sub send {
41 &{ shift->{send} }
42}
43
44# nodes reachable via the network
32package AnyEvent::MP::Node::Direct; 45package AnyEvent::MP::Node::External;
33 46
34use base "AnyEvent::MP::Node"; 47use base "AnyEvent::MP::Node";
35 48
36sub send { 49# called at init time, mostly sets {send}
50sub transport_reset {
37 my ($self, $msg) = @_; 51 my ($self) = @_;
38 52
39 if ($self->{transport}) { 53 delete $self->{transport};
40 $self->{transport}->send ($msg); 54
41 } elsif ($self->{queue}) { 55 Scalar::Util::weaken $self;
56
57 $self->{send} = sub {
42 push @{ $self->{queue} }, $msg; 58 push @{$self->{queue}}, shift;
43 } else {
44 $self->{queue} = [$msg];
45 $self->connect; 59 $self->connect;
60 };
61}
62
63# called only after successful handshake
64sub transport_error {
65 my ($self, @reason) = @_;
66
67 my $no_transport = !$self->{transport};
68
69 delete $self->{connect_w};
70 delete $self->{connect_to};
71
72 delete $self->{queue};
73 $self->transport_reset;
74
75 if (my $mon = delete $self->{lmon}) {
76 $_->(@reason) for map @$_, values %$mon;
46 } 77 }
47}
48 78
49sub set_transport { 79 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 0, @reason)
80 unless $no_transport;
81}
82
83# called after handshake was successful
84sub transport_connect {
50 my ($self, $transport) = @_; 85 my ($self, $transport) = @_;
51 86
52 delete $self->{trial}; 87 delete $self->{trial};
88
89 $self->transport_error (transport_error => "switched connections")
90 if $self->{transport};
91
53 delete $self->{next_connect}; 92 delete $self->{connect_w};
93 delete $self->{connect_to};
54 94
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; 95 $self->{transport} = $transport;
96
97 my $transport_send = $transport->can ("send");
98
99 $self->{send} = sub {
100 $transport_send->($transport, $_[0]);
101 };
102
103 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1);
66 104
67 $transport->send ($_) 105 $transport->send ($_)
68 for @{ delete $self->{queue} || [] }; 106 for @{ delete $self->{queue} || [] };
69} 107}
70 108
109sub connect {
110 my ($self, @addresses) = @_;
111
112 return if $self->{transport};
113
114 Scalar::Util::weaken $self;
115
116 $self->{connect_to} ||= AE::timer
117 $AnyEvent::MP::Config::CFG{monitor_timeout} || $AnyEvent::MP::Kernel::MONITOR_TIMEOUT,
118 0,
119 sub {
120 $self->transport_error (transport_error => $self->{id}, "unable to connect");
121 };
122
123 return unless @addresses;
124
125 $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} with [@addresses]");
126
127 unless ($self->{connect_w}) {
128 my @endpoints;
129
130 $self->{connect_w} = AE::timer
131 rand,
132 $AnyEvent::MP::Config::CFG{connect_interval} || $AnyEvent::MP::Kernel::CONNECT_INTERVAL,
133 sub {
134 @endpoints = @addresses
135 unless @endpoints;
136
137 my $endpoint = shift @endpoints;
138
139 $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} at $endpoint");
140
141 $self->{trial}{$endpoint} ||= do {
142 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint
143 or return $AnyEvent::MP::Kernel::WARN->(1, "$self->{id}: not a resolved node reference.");
144
145 AnyEvent::MP::Transport::mp_connect
146 $host, $port,
147 sub { delete $self->{trial}{$endpoint} },
148 };
149 }
150 ;
151 }
152}
153
154sub kill {
155 my ($self, $port, @reason) = @_;
156
157 $self->send (["", kil => $port, @reason]);
158}
159
160sub monitor {
161 my ($self, $portid, $cb) = @_;
162
163 my $list = $self->{lmon}{$portid} ||= [];
164
165 $self->send (["", mon1 => $portid])
166 unless @$list || !length $portid;
167
168 push @$list, $cb;
169}
170
171sub unmonitor {
172 my ($self, $portid, $cb) = @_;
173
174 my $list = $self->{lmon}{$portid}
175 or return;
176
177 @$list = grep $_ != $cb, @$list;
178
179 unless (@$list) {
180 $self->send (["", mon0 => $portid]);
181 delete $self->{monitor}{$portid};
182 }
183}
184
185# used for direct slave connections as well
186package AnyEvent::MP::Node::Direct;
187
188use base "AnyEvent::MP::Node::External";
189
190package AnyEvent::MP::Node::Self;
191
192use base "AnyEvent::MP::Node";
193
194sub connect {
195 # we are trivially connected
196}
197
71sub clr_transport { 198sub transport_reset {
72 my ($self) = @_; 199 my ($self) = @_;
73 200
74 delete $self->{transport};
75
76 $self->connect;
77}
78
79sub connect {
80 my ($self) = @_;
81
82 Scalar::Util::weaken $self; 201 Scalar::Util::weaken $self;
83 202
84 unless (exists $self->{n_noderef}) { 203 $self->{send} = sub {
85 (AnyEvent::MP::normalise_noderef ($self->{noderef}))->cb (sub { 204 local $AnyEvent::MP::Kernel::SRCNODE = $self;
86 $self or return; 205 AnyEvent::MP::Kernel::_inject (@{ $_[0] });
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 $self->connect;
130 }; 206 };
131} 207}
132 208
133package AnyEvent::MP::Node::Self; 209sub transport_connect {
210 my ($self, $tp) = @_;
134 211
135use base "AnyEvent::MP::Node"; 212 $AnyEvent::MP::Kernel::WARN->(9, "I refuse to talk to myself ($tp->{peerhost}:$tp->{peerport})");
136
137sub set_transport {
138 die "FATAL error, set_transport was called";
139} 213}
140 214
141sub send { 215sub kill {
142 AnyEvent::MP::_inject ($_[1]); 216 my ($self, $port, @reason) = @_;
217
218 delete $AnyEvent::MP::Kernel::PORT{$port};
219 delete $AnyEvent::MP::Kernel::PORT_DATA{$port};
220
221 my $mon = delete $AnyEvent::MP::Kernel::LMON{$port}
222 or !@reason
223 or $AnyEvent::MP::Kernel::WARN->(2, "unmonitored local port $port died with reason: @reason");
224
225 $_->(@reason) for values %$mon;
226}
227
228sub monitor {
229 my ($self, $portid, $cb) = @_;
230
231 return $cb->(no_such_port => "cannot monitor nonexistent port")
232 unless exists $AnyEvent::MP::Kernel::PORT{$portid};
233
234 $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0} = $cb;
235}
236
237sub unmonitor {
238 my ($self, $portid, $cb) = @_;
239
240 delete $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0};
143} 241}
144 242
145=head1 SEE ALSO 243=head1 SEE ALSO
146 244
147L<AnyEvent>. 245L<AnyEvent::MP>.
148 246
149=head1 AUTHOR 247=head1 AUTHOR
150 248
151 Marc Lehmann <schmorp@schmorp.de> 249 Marc Lehmann <schmorp@schmorp.de>
152 http://home.schmorp.de/ 250 http://home.schmorp.de/

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