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Comparing AnyEvent-MP/MP/Node.pm (file contents):
Revision 1.13 by root, Wed Aug 5 22:40:51 2009 UTC vs.
Revision 1.39 by root, Tue Sep 8 13:46:25 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
11This is an internal utility module, horrible to look at, so don't.
10 12
11=cut 13=cut
12 14
13package AnyEvent::MP::Node; 15package AnyEvent::MP::Node;
14 16
… …
18use AnyEvent::Util (); 20use AnyEvent::Util ();
19use AnyEvent::Socket (); 21use AnyEvent::Socket ();
20 22
21use AnyEvent::MP::Transport (); 23use AnyEvent::MP::Transport ();
22 24
23use base Exporter::;
24
25our $VERSION = '0.0';
26
27sub new { 25sub new {
28 my ($class, $noderef) = @_; 26 my ($self, $id) = @_;
29 27
30 bless { noderef => $noderef }, $class 28 $self = bless { id => $id }, $self;
31}
32 29
30 $self->init;
31 $self->transport_reset;
32
33 $self
34}
35
36sub init {
37 #
38}
39
40sub send {
41 &{ shift->{send} }
42}
43
44# nodes reachable via the network
33package AnyEvent::MP::Node::Direct; 45package AnyEvent::MP::Node::External;
34 46
35use base "AnyEvent::MP::Node"; 47use base "AnyEvent::MP::Node";
36 48
37sub send { 49# called at init time, mostly sets {send}
50sub transport_reset {
38 my ($self, $msg) = @_; 51 my ($self) = @_;
39 52
40 if ($self->{transport}) { 53 delete $self->{transport};
41 $self->{transport}->send ($msg); 54
42 } elsif ($self->{queue}) { 55 Scalar::Util::weaken $self;
56
57 $self->{send} = sub {
43 push @{ $self->{queue} }, $msg; 58 push @{$self->{queue}}, shift;
44 } else {
45 $self->{queue} = [$msg];
46 $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 %$mon;
47 } 78 }
79
80 AnyEvent::MP::Kernel::_inject_nodeevent ($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} || $self->{connect_to};
86}
87
88# called after handshake was successful
89sub transport_connect {
90 my ($self, $transport) = @_;
91
92 delete $self->{trial};
93
94 $self->transport_error (transport_error => "switched connections")
95 if $self->{transport};
96
97 delete $self->{connect_w};
98 delete $self->{connect_to};
99
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);
109
110 $transport->send ($_)
111 for @{ delete $self->{queue} || [] };
112}
113
114sub connect {
115 my ($self, @addresses) = @_;
116
117 return if $self->{transport};
118
119 Scalar::Util::weaken $self;
120
121 my $monitor = $AnyEvent::MP::Kernel::CONFIG->{monitor_timeout};
122
123 $self->{connect_to} ||= AE::timer $monitor, 0, sub {
124 $self->transport_error (transport_error => $self->{id}, "unable to connect");
125 };
126
127 return unless @addresses;
128 return if $self->{connect_w};
129
130 $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} with [@addresses]");
131
132 my $interval = $AnyEvent::MP::Kernel::CONFIG->{connect_interval};
133
134 $interval = ($monitor - $interval) / @addresses
135 if ($monitor - $interval) / @addresses < $interval;
136
137 $interval = 0.4 if $interval < 0.4;
138
139 my @endpoints;
140
141 $self->{connect_w} = AE::timer 0.050 * rand, $interval * (0.9 + 0.1 * rand), sub {
142 @endpoints = @addresses
143 unless @endpoints;
144
145 my $endpoint = shift @endpoints;
146
147 $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} at $endpoint");
148
149 $self->{trial}{$endpoint} ||= do {
150 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint
151 or return $AnyEvent::MP::Kernel::WARN->(1, "$self->{id}: not a resolved node reference.");
152
153 AnyEvent::MP::Transport::mp_connect
154 $host, $port,
155 sub { delete $self->{trial}{$endpoint} },
156 };
157 };
48} 158}
49 159
50sub kill { 160sub kill {
51 my ($self, $port, @reason) = @_; 161 my ($self, $port, @reason) = @_;
52 162
… …
54} 164}
55 165
56sub monitor { 166sub monitor {
57 my ($self, $portid, $cb) = @_; 167 my ($self, $portid, $cb) = @_;
58 168
59 return $cb->(transport_error => "node unreachable")
60 if $self->{failed};
61
62 my $list = $self->{lmon}{$portid} ||= []; 169 my $list = $self->{lmon}{$portid} ||= [];
63 170
64 $self->send (["", mon1 => $portid]) 171 $self->send (["", mon1 => $portid])
65 unless @$list; 172 unless @$list || !length $portid;
66 173
67 push @$list, $cb; 174 push @$list, $cb;
68} 175}
69 176
70sub unmonitor { 177sub unmonitor {
… …
79 $self->send (["", mon0 => $portid]); 186 $self->send (["", mon0 => $portid]);
80 delete $self->{monitor}{$portid}; 187 delete $self->{monitor}{$portid};
81 } 188 }
82} 189}
83 190
84sub set_transport { 191# used for direct slave connections as well
85 my ($self, $transport) = @_; 192package AnyEvent::MP::Node::Direct;
86 193
87 $self->clr_transport 194use base "AnyEvent::MP::Node::External";
88 if $self->{transport};
89 195
90 if ( 196package AnyEvent::MP::Node::Self;
91 exists $self->{remote_uniq}
92 && $self->{remote_uniq} ne $transport->{remote_uniq}
93 ) {
94 # uniq changed, different node
95 $self->fail (transport_error => $self->{noderef}, "node was restarted");
96 }
97 197
98 delete $self->{trial}; 198use base "AnyEvent::MP::Node";
99 delete $self->{next_connect};
100 delete $self->{failed};
101
102 $self->{remote_uniq} = $transport->{remote_uniq};
103 $self->{transport} = $transport;
104
105 $transport->send ($_)
106 for @{ delete $self->{queue} || [] };
107}
108
109sub fail {
110 my ($self, @reason) = @_;
111
112 delete $self->{queue};
113
114 $self->{failed} = 1;
115
116 if (my $mon = delete $self->{lmon}) {
117 $_->(@reason) for map @$_, values %$mon;
118 }
119}
120
121sub clr_transport {
122 my ($self, @reason) = @_;
123
124 delete $self->{transport};
125 $self->connect;
126}
127 199
128sub connect { 200sub connect {
201 # we are trivially connected
202}
203
204# delay every so often to avoid recursion, also used to delay after spawn
205our $DELAY;
206our @DELAY;
207our $DELAY_W;
208
209sub _send_delayed {
210 local $AnyEvent::MP::Kernel::SRCNODE = $AnyEvent::MP::Kernel::NODE{""};
211 (shift @DELAY)->()
212 while @DELAY;
213 undef $DELAY_W;
214 $DELAY = -50;
215}
216
217sub transport_reset {
129 my ($self) = @_; 218 my ($self) = @_;
130 219
131 Scalar::Util::weaken $self; 220 Scalar::Util::weaken $self;
132 221
133 $self->{retry} ||= [split /,/, $self->{noderef}]; 222 $self->{send} = sub {
134 223 if ($DELAY++ >= 0) {
135 my $endpoint = shift @{ $self->{retry} }; 224 my $msg = $_[0];
136 225 push @DELAY, sub { AnyEvent::MP::Kernel::_inject (@$msg) };
137 if (defined $endpoint) { 226 $DELAY_W ||= AE::timer 0, 0, \&_send_delayed;
138 $self->{trial}{$endpoint} ||= do { 227 } else {
139 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint 228 local $AnyEvent::MP::Kernel::SRCNODE = $self;
140 or return $AnyEvent::MP::Base::WARN->("$self->{noderef}: not a resolved node reference."); 229 AnyEvent::MP::Kernel::_inject (@{ $_[0] });
141
142 my ($w, $g);
143
144 $w = AE::timer $AnyEvent::MP::Base::CONNECT_TIMEOUT, 0, sub {
145 delete $self->{trial}{$endpoint};
146 };
147 $g = AnyEvent::MP::Transport::mp_connect
148 $host, $port,
149 sub {
150 delete $self->{trial}{$endpoint}
151 unless @_;
152 $g = shift;
153 };
154 ;
155
156 [$w, \$g]
157 }; 230 }
158 } else {
159 delete $self->{retry};
160 $self->fail (transport_error => $self->{noderef}, "unable to connect");
161 } 231 };
162
163 $self->{next_connect} = AE::timer $AnyEvent::MP::Base::CONNECT_INTERVAL, 0, sub {
164 $self->connect;
165 };
166} 232}
167 233
168package AnyEvent::MP::Node::Slave; 234sub transport_connect {
169
170use base "AnyEvent::MP::Node::Direct";
171
172sub connect {
173 my ($self) = @_; 235 my ($self, $tp) = @_;
174 236
175 $self->fail (transport_error => $self->{noderef}, "unable to connect to slave node"); 237 $AnyEvent::MP::Kernel::WARN->(9, "I refuse to talk to myself ($tp->{peerhost}:$tp->{peerport})");
176}
177
178package AnyEvent::MP::Node::Self;
179
180use base "AnyEvent::MP::Node";
181
182sub set_transport {
183 Carp::confess "FATAL error, set_transport was called on local node";
184}
185
186sub send {
187 local $AnyEvent::MP::Base::SRCNODE = $_[0];
188 AnyEvent::MP::Base::_inject (@{ $_[1] });
189} 238}
190 239
191sub kill { 240sub kill {
192 my ($self, $port, @reason) = @_; 241 my ($self, $port, @reason) = @_;
193 242
243 my $delay_cb = sub {
194 delete $AnyEvent::MP::Base::PORT{$port}; 244 delete $AnyEvent::MP::Kernel::PORT{$port};
195 delete $AnyEvent::MP::Base::PORT_DATA{$port}; 245 delete $AnyEvent::MP::Kernel::PORT_DATA{$port};
196 246
197 my $mon = delete $AnyEvent::MP::Base::LMON{$port} 247 my $mon = delete $AnyEvent::MP::Kernel::LMON{$port}
198 or !@reason 248 or !@reason
199 or $AnyEvent::MP::Base::WARN->("unmonitored local port $port died with reason: @reason"); 249 or $AnyEvent::MP::Kernel::WARN->(8, "unmonitored local port $port died with reason: @reason");
200 250
201 $_->(@reason) for values %$mon; 251 $_->(@reason) for values %$mon;
252 };
253
254 $DELAY_W ? push @DELAY, $delay_cb : &$delay_cb;
202} 255}
203 256
204sub monitor { 257sub monitor {
205 my ($self, $portid, $cb) = @_; 258 my ($self, $portid, $cb) = @_;
206 259
207 return $cb->() 260 my $delay_cb = sub {
261 return $cb->(no_such_port => "cannot monitor nonexistent port", "$self->{id}#$portid")
208 unless exists $AnyEvent::MP::Base::PORT{$portid}; 262 unless exists $AnyEvent::MP::Kernel::PORT{$portid};
209 263
210 $AnyEvent::MP::Base::LMON{$portid}{$cb+0} = $cb; 264 $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0} = $cb;
265 };
266
267 $DELAY_W ? push @DELAY, $delay_cb : &$delay_cb;
211} 268}
212 269
213sub unmonitor { 270sub unmonitor {
214 my ($self, $portid, $cb) = @_; 271 my ($self, $portid, $cb) = @_;
215 272
273 my $delay_cb = sub {
216 delete $AnyEvent::MP::Base::LMON{$portid}{$cb+0}; 274 delete $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0};
275 };
276
277 $DELAY_W ? push @DELAY, $delay_cb : &$delay_cb;
217} 278}
218 279
219=head1 SEE ALSO 280=head1 SEE ALSO
220 281
221L<AnyEvent>. 282L<AnyEvent::MP>.
222 283
223=head1 AUTHOR 284=head1 AUTHOR
224 285
225 Marc Lehmann <schmorp@schmorp.de> 286 Marc Lehmann <schmorp@schmorp.de>
226 http://home.schmorp.de/ 287 http://home.schmorp.de/

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