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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 1.32 by root, Sun Aug 30 09:24:09 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 $self->connect;
60 };
61}
62
63# called each time we fail to establish a connection,
64# or the existing connection failed
65sub transport_error {
66 my ($self, @reason) = @_;
67
68 my $no_transport = !$self->{transport};
69
70 delete $self->{connect_w};
71 delete $self->{connect_to};
72
73 delete $self->{queue};
74 $self->transport_reset;
75
76 if (my $mon = delete $self->{lmon}) {
77 $_->(@reason) for map @$_, values %$mon;
46 } 78 }
47}
48 79
49sub set_transport { 80 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 0, @reason)
81 unless $no_transport;
82
83 # if we are here and are idle, we nuke ourselves
84 delete $AnyEvent::MP::Kernel::NODE{$self->{id}}
85 unless $self->{transport} || $self->{connect_to};
86}
87
88# called after handshake was successful
89sub transport_connect {
50 my ($self, $transport) = @_; 90 my ($self, $transport) = @_;
51 91
52 delete $self->{trial}; 92 delete $self->{trial};
93
94 $self->transport_error (transport_error => "switched connections")
95 if $self->{transport};
96
53 delete $self->{next_connect}; 97 delete $self->{connect_w};
98 delete $self->{connect_to};
54 99
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; 100 $self->{transport} = $transport;
101
102 my $transport_send = $transport->can ("send");
103
104 $self->{send} = sub {
105 $transport_send->($transport, $_[0]);
106 };
107
108 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1);
66 109
67 $transport->send ($_) 110 $transport->send ($_)
68 for @{ delete $self->{queue} || [] }; 111 for @{ delete $self->{queue} || [] };
69} 112}
70 113
114sub connect {
115 my ($self, @addresses) = @_;
116
117 return if $self->{transport};
118
119 Scalar::Util::weaken $self;
120
121 $self->{connect_to} ||= AE::timer
122 $AnyEvent::MP::Config::CFG{monitor_timeout} || $AnyEvent::MP::Kernel::MONITOR_TIMEOUT,
123 0,
124 sub {
125 $self->transport_error (transport_error => $self->{id}, "unable to connect");
126 };
127
128 return unless @addresses;
129
130 $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} with [@addresses]");
131
132 unless ($self->{connect_w}) {
133 my @endpoints;
134
135 $self->{connect_w} = AE::timer
136 rand,
137 $AnyEvent::MP::Config::CFG{connect_interval} || $AnyEvent::MP::Kernel::CONNECT_INTERVAL,
138 sub {
139 @endpoints = @addresses
140 unless @endpoints;
141
142 my $endpoint = shift @endpoints;
143
144 $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} at $endpoint");
145
146 $self->{trial}{$endpoint} ||= do {
147 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint
148 or return $AnyEvent::MP::Kernel::WARN->(1, "$self->{id}: not a resolved node reference.");
149
150 AnyEvent::MP::Transport::mp_connect
151 $host, $port,
152 sub { delete $self->{trial}{$endpoint} },
153 };
154 }
155 ;
156 }
157}
158
159sub kill {
160 my ($self, $port, @reason) = @_;
161
162 $self->send (["", kil => $port, @reason]);
163}
164
165sub monitor {
166 my ($self, $portid, $cb) = @_;
167
168 my $list = $self->{lmon}{$portid} ||= [];
169
170 $self->send (["", mon1 => $portid])
171 unless @$list || !length $portid;
172
173 push @$list, $cb;
174}
175
176sub unmonitor {
177 my ($self, $portid, $cb) = @_;
178
179 my $list = $self->{lmon}{$portid}
180 or return;
181
182 @$list = grep $_ != $cb, @$list;
183
184 unless (@$list) {
185 $self->send (["", mon0 => $portid]);
186 delete $self->{monitor}{$portid};
187 }
188}
189
190# used for direct slave connections as well
191package AnyEvent::MP::Node::Direct;
192
193use base "AnyEvent::MP::Node::External";
194
195package AnyEvent::MP::Node::Self;
196
197use base "AnyEvent::MP::Node";
198
199sub connect {
200 # we are trivially connected
201}
202
71sub clr_transport { 203sub transport_reset {
72 my ($self) = @_; 204 my ($self) = @_;
73 205
74 delete $self->{transport};
75
76 $self->connect;
77}
78
79sub connect {
80 my ($self) = @_;
81
82 Scalar::Util::weaken $self; 206 Scalar::Util::weaken $self;
83 207
84 unless (exists $self->{n_noderef}) { 208 $self->{send} = sub {
85 (AnyEvent::MP::normalise_noderef ($self->{noderef}))->cb (sub { 209 local $AnyEvent::MP::Kernel::SRCNODE = $self;
86 $self or return; 210 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 $self->connect;
130 }; 211 };
131} 212}
132 213
133package AnyEvent::MP::Node::Self; 214sub transport_connect {
215 my ($self, $tp) = @_;
134 216
135use base "AnyEvent::MP::Node"; 217 $AnyEvent::MP::Kernel::WARN->(9, "I refuse to talk to myself ($tp->{peerhost}:$tp->{peerport})");
136
137sub set_transport {
138 die "FATAL error, set_transport was called";
139} 218}
140 219
141sub send { 220sub kill {
142 AnyEvent::MP::_inject ($_[1]); 221 my ($self, $port, @reason) = @_;
222
223 delete $AnyEvent::MP::Kernel::PORT{$port};
224 delete $AnyEvent::MP::Kernel::PORT_DATA{$port};
225
226 my $mon = delete $AnyEvent::MP::Kernel::LMON{$port}
227 or !@reason
228 or $AnyEvent::MP::Kernel::WARN->(2, "unmonitored local port $port died with reason: @reason");
229
230 $_->(@reason) for values %$mon;
231}
232
233sub monitor {
234 my ($self, $portid, $cb) = @_;
235
236 return $cb->(no_such_port => "cannot monitor nonexistent port")
237 unless exists $AnyEvent::MP::Kernel::PORT{$portid};
238
239 $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0} = $cb;
240}
241
242sub unmonitor {
243 my ($self, $portid, $cb) = @_;
244
245 delete $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0};
143} 246}
144 247
145=head1 SEE ALSO 248=head1 SEE ALSO
146 249
147L<AnyEvent>. 250L<AnyEvent::MP>.
148 251
149=head1 AUTHOR 252=head1 AUTHOR
150 253
151 Marc Lehmann <schmorp@schmorp.de> 254 Marc Lehmann <schmorp@schmorp.de>
152 http://home.schmorp.de/ 255 http://home.schmorp.de/

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