… | |
… | |
10 | |
10 | |
11 | This is an internal utility module, horrible to look at, so don't. |
11 | This is an internal utility module, horrible to look at, so don't. |
12 | |
12 | |
13 | =cut |
13 | =cut |
14 | |
14 | |
15 | package AnyEvent::MP::Node; |
15 | package AnyEvent::MP::Node; # base class for nodes |
16 | |
16 | |
17 | use common::sense; |
17 | use common::sense; |
18 | |
18 | |
19 | use AE (); |
|
|
20 | use AnyEvent::Util (); |
19 | use AnyEvent (); |
21 | use AnyEvent::Socket (); |
20 | use AnyEvent::Socket (); |
22 | |
21 | |
23 | use AnyEvent::MP::Transport (); |
22 | use AnyEvent::MP::Transport (); |
24 | |
23 | |
25 | sub new { |
24 | sub new { |
26 | my ($self, $id) = @_; |
25 | my ($self, $id) = @_; |
27 | |
26 | |
28 | $self = bless { id => $id }, $self; |
27 | $self = bless { id => $id }, $self; |
29 | |
28 | |
|
|
29 | # register |
|
|
30 | $AnyEvent::MP::Kernel::NODE{$id} = $self; |
|
|
31 | |
30 | $self->init; |
32 | $self->init; |
31 | $self->transport_reset; |
33 | $self->transport_reset; |
32 | |
34 | |
33 | $self |
35 | $self |
34 | } |
36 | } |
35 | |
37 | |
|
|
38 | sub DESTROY { |
|
|
39 | # unregister |
|
|
40 | delete $AnyEvent::MP::Kernel::NODE{$_[0]{id}}; |
|
|
41 | } |
|
|
42 | |
36 | sub init { |
43 | sub init { |
37 | # |
44 | # |
38 | } |
45 | } |
39 | |
46 | |
40 | sub send { |
47 | sub send { |
41 | &{ shift->{send} } |
48 | &{ shift->{send} } |
42 | } |
49 | } |
43 | |
50 | |
44 | # nodes reachable via the network |
51 | # nodes reachable via the network |
45 | package AnyEvent::MP::Node::External; |
52 | package AnyEvent::MP::Node::Remote; # a remote node |
46 | |
53 | |
47 | use base "AnyEvent::MP::Node"; |
54 | use base "AnyEvent::MP::Node"; |
48 | |
55 | |
49 | # called at init time, mostly sets {send} |
56 | # called at init time, mostly sets {send} |
50 | sub transport_reset { |
57 | sub transport_reset { |
… | |
… | |
58 | push @{$self->{queue}}, shift; |
65 | push @{$self->{queue}}, shift; |
59 | $self->connect; |
66 | $self->connect; |
60 | }; |
67 | }; |
61 | } |
68 | } |
62 | |
69 | |
63 | # called only after successful handshake |
70 | # called each time we fail to establish a connection, |
|
|
71 | # or the existing connection failed |
64 | sub transport_error { |
72 | sub transport_error { |
65 | my ($self, @reason) = @_; |
73 | my ($self, @reason) = @_; |
66 | |
74 | |
67 | my $no_transport = !$self->{transport}; |
75 | my $no_transport = !$self->{transport}; |
68 | |
76 | |
… | |
… | |
76 | $_->(@reason) for map @$_, values %$mon; |
84 | $_->(@reason) for map @$_, values %$mon; |
77 | } |
85 | } |
78 | |
86 | |
79 | AnyEvent::MP::Kernel::_inject_nodeevent ($self, 0, @reason) |
87 | AnyEvent::MP::Kernel::_inject_nodeevent ($self, 0, @reason) |
80 | unless $no_transport; |
88 | unless $no_transport; |
|
|
89 | |
|
|
90 | # we weaken the node reference, so it can go away if unused |
|
|
91 | Scalar::Util::weaken $AnyEvent::MP::Kernel::NODE{$self->{id}} |
|
|
92 | unless $self->{connect_to}; |
|
|
93 | |
|
|
94 | AE::log 9 => "@reason"; |
81 | } |
95 | } |
82 | |
96 | |
83 | # called after handshake was successful |
97 | # called after handshake was successful |
84 | sub transport_connect { |
98 | sub transport_connect { |
85 | my ($self, $transport) = @_; |
99 | my ($self, $transport) = @_; |
86 | |
100 | |
87 | delete $self->{trial}; |
101 | delete $self->{trial}; |
88 | |
102 | |
89 | $self->transport_error (transport_error => "switched connections") |
103 | $self->transport_error (transport_error => $self->{id}, "switched connections") |
90 | if $self->{transport}; |
104 | if $self->{transport}; |
91 | |
105 | |
92 | delete $self->{connect_w}; |
106 | delete $self->{connect_w}; |
93 | delete $self->{connect_to}; |
107 | delete $self->{connect_to}; |
94 | |
108 | |
95 | $self->{transport} = $transport; |
109 | $self->{transport} = $transport; |
96 | |
110 | |
97 | my $transport_send = $transport->can ("send"); |
111 | my $transport_send = $transport->{send}; |
98 | |
112 | |
99 | $self->{send} = sub { |
113 | AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1); |
100 | $transport_send->($transport, $_[0]); |
114 | |
|
|
115 | $self->{send} = $transport_send; |
|
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116 | |
|
|
117 | $transport_send->($_) |
|
|
118 | for @{ delete $self->{queue} || [] }; |
|
|
119 | } |
|
|
120 | |
|
|
121 | sub connect { |
|
|
122 | my ($self) = @_; |
|
|
123 | |
|
|
124 | return if $self->{transport}; |
|
|
125 | return if $self->{connect_w}; |
|
|
126 | |
|
|
127 | # we unweaken the node reference, in case it was weakened before |
|
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128 | $AnyEvent::MP::Kernel::NODE{$self->{id}} |
|
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129 | = $AnyEvent::MP::Kernel::NODE{$self->{id}}; |
|
|
130 | |
|
|
131 | Scalar::Util::weaken $self; |
|
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132 | |
|
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133 | $self->{connect_to} ||= AE::timer $AnyEvent::MP::Kernel::CONFIG->{connect_interval}, 0, sub { |
|
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134 | $self->transport_error (transport_error => $self->{id}, "connect timeout"); |
101 | }; |
135 | }; |
102 | |
136 | |
103 | AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1); |
137 | # maybe @$addresses? |
|
|
138 | my $addresses = $AnyEvent::MP::Kernel::GLOBAL_DB{"'l"}{$self->{id}}; |
104 | |
139 | |
105 | $transport->send ($_) |
140 | if ($addresses) { |
106 | for @{ delete $self->{queue} || [] }; |
141 | $self->connect_to ($addresses); |
|
|
142 | } else { |
|
|
143 | # on global nodes, all bets are off now - we either know the node, or we don't |
|
|
144 | if ($AnyEvent::MP::Kernel::GLOBAL) { |
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145 | $self->transport_error (transport_error => $self->{id}, "no known address"); |
|
|
146 | } else { |
|
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147 | AnyEvent::MP::Kernel::g_find ($self->{id}); |
|
|
148 | } |
|
|
149 | } |
107 | } |
150 | } |
108 | |
151 | |
109 | sub connect { |
152 | sub connect_to { |
110 | my ($self, @addresses) = @_; |
153 | my ($self, $addresses) = @_; |
111 | |
154 | |
112 | return if $self->{transport}; |
155 | return if $self->{transport}; |
|
|
156 | return if $self->{connect_w}; |
113 | |
157 | |
114 | Scalar::Util::weaken $self; |
158 | unless (@$addresses) { |
115 | |
|
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116 | $self->{connect_to} ||= AE::timer |
|
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117 | $AnyEvent::MP::Config::CFG{monitor_timeout} || $AnyEvent::MP::Kernel::MONITOR_TIMEOUT, |
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118 | 0, |
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119 | sub { |
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120 | $self->transport_error (transport_error => $self->{id}, "unable to connect"); |
159 | $self->transport_error (transport_error => $self->{id}, "no known address"); |
|
|
160 | return; |
|
|
161 | } |
|
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162 | |
|
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163 | AE::log 9 => "connecting to $self->{id} with [@$addresses]"; |
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164 | |
|
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165 | my $monitor = $AnyEvent::MP::Kernel::CONFIG->{monitor_timeout}; |
|
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166 | my $interval = $AnyEvent::MP::Kernel::CONFIG->{connect_interval}; |
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167 | |
|
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168 | $interval = ($monitor - $interval) / @$addresses |
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169 | if ($monitor - $interval) / @$addresses < $interval; |
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170 | |
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171 | $interval = 0.4 if $interval < 0.4; |
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172 | |
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173 | my @endpoints = reverse @$addresses; |
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174 | |
|
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175 | $self->{connect_w} = AE::timer 0, $interval * (0.9 + 0.1 * rand), sub { |
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176 | my $endpoint = pop @endpoints; |
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177 | |
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178 | AE::log 9 => "connecting to $self->{id} at $endpoint"; |
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179 | |
|
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180 | $self->{trial}{$endpoint} ||= do { |
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181 | my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint |
|
|
182 | or return AE::log critical => "$self->{id}: '$endpoint' is not a resolved node reference."; |
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183 | |
|
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184 | AnyEvent::MP::Transport::mp_connect |
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185 | $host, $port, |
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186 | sub { delete $self->{trial}{$endpoint} }, |
121 | }; |
187 | }; |
122 | |
|
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123 | return unless @addresses; |
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124 | |
|
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125 | $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} with [@addresses]"); |
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126 | |
|
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127 | unless ($self->{connect_w}) { |
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128 | my @endpoints; |
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129 | |
|
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130 | $self->{connect_w} = AE::timer |
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131 | rand, |
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132 | $AnyEvent::MP::Config::CFG{connect_interval} || $AnyEvent::MP::Kernel::CONNECT_INTERVAL, |
|
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133 | sub { |
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134 | @endpoints = @addresses |
|
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135 | unless @endpoints; |
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136 | |
|
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137 | my $endpoint = shift @endpoints; |
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138 | |
|
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139 | $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} at $endpoint"); |
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140 | |
|
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141 | $self->{trial}{$endpoint} ||= do { |
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142 | my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint |
|
|
143 | or return $AnyEvent::MP::Kernel::WARN->(1, "$self->{id}: not a resolved node reference."); |
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144 | |
|
|
145 | AnyEvent::MP::Transport::mp_connect |
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146 | $host, $port, |
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147 | sub { delete $self->{trial}{$endpoint} }, |
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|
148 | }; |
|
|
149 | } |
|
|
150 | ; |
|
|
151 | } |
188 | }; |
152 | } |
189 | } |
153 | |
190 | |
154 | sub kill { |
191 | sub kill { |
155 | my ($self, $port, @reason) = @_; |
192 | my ($self, $port, @reason) = @_; |
156 | |
193 | |
157 | $self->send (["", kil => $port, @reason]); |
194 | $self->{send} (["", kil1 => $port, @reason]); |
158 | } |
195 | } |
159 | |
196 | |
160 | sub monitor { |
197 | sub monitor { |
161 | my ($self, $portid, $cb) = @_; |
198 | my ($self, $portid, $cb) = @_; |
162 | |
199 | |
… | |
… | |
180 | $self->send (["", mon0 => $portid]); |
217 | $self->send (["", mon0 => $portid]); |
181 | delete $self->{monitor}{$portid}; |
218 | delete $self->{monitor}{$portid}; |
182 | } |
219 | } |
183 | } |
220 | } |
184 | |
221 | |
185 | # used for direct slave connections as well |
|
|
186 | package AnyEvent::MP::Node::Direct; |
|
|
187 | |
|
|
188 | use base "AnyEvent::MP::Node::External"; |
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189 | |
|
|
190 | package AnyEvent::MP::Node::Self; |
222 | package AnyEvent::MP::Node::Self; # the local node |
191 | |
223 | |
192 | use base "AnyEvent::MP::Node"; |
224 | use base "AnyEvent::MP::Node"; |
193 | |
225 | |
194 | sub connect { |
226 | sub connect { |
195 | # we are trivially connected |
227 | # we are trivially connected |
196 | } |
228 | } |
197 | |
229 | |
|
|
230 | # delay every so often to avoid recursion, also used to delay after spawn |
|
|
231 | our $DELAY = -50; |
|
|
232 | our @DELAY; |
|
|
233 | our $DELAY_W; |
|
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234 | |
|
|
235 | our $send_delayed = sub { |
|
|
236 | $AnyEvent::MP::Kernel::SRCNODE = $AnyEvent::MP::Kernel::NODE; |
|
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237 | (shift @DELAY)->() |
|
|
238 | while @DELAY; |
|
|
239 | undef $DELAY_W; |
|
|
240 | $DELAY = -50; |
|
|
241 | }; |
|
|
242 | |
198 | sub transport_reset { |
243 | sub transport_reset { |
199 | my ($self) = @_; |
244 | my ($self) = @_; |
200 | |
245 | |
201 | Scalar::Util::weaken $self; |
246 | Scalar::Util::weaken $self; |
202 | |
247 | |
203 | $self->{send} = sub { |
248 | $self->{send} = sub { |
|
|
249 | if (++$DELAY > 0) { |
|
|
250 | my $msg = $_[0]; |
|
|
251 | push @DELAY, sub { AnyEvent::MP::Kernel::_inject (@$msg) }; |
|
|
252 | $DELAY_W ||= AE::timer 0, 0, $send_delayed; |
|
|
253 | return; |
|
|
254 | } |
|
|
255 | |
204 | local $AnyEvent::MP::Kernel::SRCNODE = $self; |
256 | local $AnyEvent::MP::Kernel::SRCNODE = $AnyEvent::MP::Kernel::NODE; |
205 | AnyEvent::MP::Kernel::_inject (@{ $_[0] }); |
257 | AnyEvent::MP::Kernel::_inject (@{ $_[0] }); |
206 | }; |
258 | }; |
207 | } |
259 | } |
208 | |
260 | |
209 | sub transport_connect { |
261 | sub transport_connect { |
210 | my ($self, $tp) = @_; |
262 | my ($self, $tp) = @_; |
211 | |
263 | |
212 | $AnyEvent::MP::Kernel::WARN->(9, "I refuse to talk to myself ($tp->{peerhost}:$tp->{peerport})"); |
264 | AE::log 9 => "I refuse to talk to myself ($tp->{peerhost}:$tp->{peerport})"; |
213 | } |
265 | } |
214 | |
266 | |
215 | sub kill { |
267 | sub kill { |
216 | my ($self, $port, @reason) = @_; |
268 | my (undef, @args) = @_; |
217 | |
269 | |
218 | delete $AnyEvent::MP::Kernel::PORT{$port}; |
270 | # we _always_ delay kil's, to avoid calling mon callbacks |
219 | delete $AnyEvent::MP::Kernel::PORT_DATA{$port}; |
271 | # from anything but the event loop context. |
220 | |
272 | $DELAY = 1; |
221 | my $mon = delete $AnyEvent::MP::Kernel::LMON{$port} |
273 | push @DELAY, sub { AnyEvent::MP::Kernel::_kill (@args) }; |
222 | or !@reason |
274 | $DELAY_W ||= AE::timer 0, 0, $send_delayed; |
223 | or $AnyEvent::MP::Kernel::WARN->(2, "unmonitored local port $port died with reason: @reason"); |
|
|
224 | |
|
|
225 | $_->(@reason) for values %$mon; |
|
|
226 | } |
275 | } |
227 | |
276 | |
228 | sub monitor { |
277 | sub monitor { |
229 | my ($self, $portid, $cb) = @_; |
278 | # maybe always delay, too? |
230 | |
279 | if ($DELAY_W) { |
231 | return $cb->(no_such_port => "cannot monitor nonexistent port") |
280 | my @args = @_; |
232 | unless exists $AnyEvent::MP::Kernel::PORT{$portid}; |
281 | push @DELAY, sub { AnyEvent::MP::Kernel::_monitor (@args) }; |
233 | |
282 | return; |
234 | $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0} = $cb; |
283 | } |
|
|
284 | &AnyEvent::MP::Kernel::_monitor; |
235 | } |
285 | } |
236 | |
286 | |
237 | sub unmonitor { |
287 | sub unmonitor { |
238 | my ($self, $portid, $cb) = @_; |
288 | # no need to always delay |
|
|
289 | if ($DELAY_W) { |
|
|
290 | my @args = @_; |
|
|
291 | push @DELAY, sub { AnyEvent::MP::Kernel::_unmonitor (@args) }; |
|
|
292 | return; |
|
|
293 | } |
239 | |
294 | |
240 | delete $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0}; |
295 | &AnyEvent::MP::Kernel::_unmonitor; |
241 | } |
296 | } |
242 | |
297 | |
243 | =head1 SEE ALSO |
298 | =head1 SEE ALSO |
244 | |
299 | |
245 | L<AnyEvent::MP>. |
300 | L<AnyEvent::MP>. |