… | |
… | |
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 { |
… | |
… | |
40 | sub send { |
39 | sub send { |
41 | &{ shift->{send} } |
40 | &{ shift->{send} } |
42 | } |
41 | } |
43 | |
42 | |
44 | # nodes reachable via the network |
43 | # nodes reachable via the network |
45 | package AnyEvent::MP::Node::External; |
44 | package AnyEvent::MP::Node::Remote; # a remote node |
46 | |
45 | |
47 | use base "AnyEvent::MP::Node"; |
46 | use base "AnyEvent::MP::Node"; |
48 | |
47 | |
49 | # called at init time, mostly sets {send} |
48 | # called at init time, mostly sets {send} |
50 | sub transport_reset { |
49 | sub transport_reset { |
… | |
… | |
89 | sub transport_connect { |
88 | sub transport_connect { |
90 | my ($self, $transport) = @_; |
89 | my ($self, $transport) = @_; |
91 | |
90 | |
92 | delete $self->{trial}; |
91 | delete $self->{trial}; |
93 | |
92 | |
94 | $self->transport_error (transport_error => "switched connections") |
93 | $self->transport_error (transport_error => $self->{id}, "switched connections") |
95 | if $self->{transport}; |
94 | if $self->{transport}; |
96 | |
95 | |
97 | delete $self->{connect_addr}; |
|
|
98 | delete $self->{connect_w}; |
96 | delete $self->{connect_w}; |
99 | delete $self->{connect_to}; |
97 | delete $self->{connect_to}; |
100 | |
98 | |
101 | $self->{transport} = $transport; |
99 | $self->{transport} = $transport; |
102 | |
100 | |
103 | my $transport_send = $transport->can ("send"); |
101 | my $transport_send = $transport->{send}; |
104 | |
102 | |
105 | AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1); |
103 | AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1); |
106 | |
104 | |
107 | $self->{send} = sub { |
105 | $self->{send} = $transport_send; |
108 | $transport_send->($transport, $_[0]); |
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109 | }; |
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|
110 | |
106 | |
111 | $transport->send ($_) |
107 | $transport_send->($_) |
112 | for @{ delete $self->{queue} || [] }; |
108 | for @{ delete $self->{queue} || [] }; |
113 | } |
109 | } |
114 | |
110 | |
115 | sub connect { |
111 | sub connect { |
116 | my ($self, @addresses) = @_; |
112 | my ($self) = @_; |
117 | |
113 | |
118 | return if $self->{transport}; |
114 | return if $self->{transport}; |
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|
115 | return if $self->{connect_w}; |
119 | |
116 | |
120 | Scalar::Util::weaken $self; |
117 | Scalar::Util::weaken $self; |
121 | |
118 | |
122 | my $monitor = $AnyEvent::MP::Kernel::CONFIG->{monitor_timeout}; |
119 | $self->{connect_to} ||= AE::timer $AnyEvent::MP::Kernel::CONFIG->{connect_interval}, 0, sub { |
123 | |
|
|
124 | $self->{connect_to} ||= AE::timer $monitor, 0, sub { |
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125 | $self->transport_error (transport_error => $self->{id}, "unable to connect"); |
120 | $self->transport_error (transport_error => $self->{id}, "unable to connect"); |
126 | }; |
121 | }; |
127 | |
122 | |
|
|
123 | # maybe @$addresses? |
|
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124 | my $addresses = $AnyEvent::MP::Kernel::GLOBAL_DB{"'l"}{$self->{id}}; |
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125 | |
|
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126 | if ($addresses) { |
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127 | $self->connect_to ($addresses); |
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128 | } else { |
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129 | # on global nodes, all bets are off now - we either know the node, or we don't |
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130 | unless ($AnyEvent::MP::Kernel::GLOBAL) { |
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131 | AnyEvent::MP::Kernel::g_find ($self->{id}); |
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132 | } |
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133 | } |
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134 | } |
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135 | |
|
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136 | sub connect_to { |
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137 | my ($self, $addresses) = @_; |
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138 | |
|
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139 | return if $self->{transport}; |
|
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140 | return if $self->{connect_w}; |
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141 | |
128 | return unless @addresses; |
142 | return unless @$addresses; |
129 | |
|
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130 | if ($self->{connect_w}) { |
|
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131 | # sometimes we get told about new addresses after we started to connect |
|
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132 | unshift @{$self->{connect_addr}}, @addresses; |
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133 | return; |
|
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134 | } |
143 | |
135 | |
|
|
136 | $self->{connect_addr} = \@addresses; # a bit weird, but efficient |
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137 | |
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138 | $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} with [@addresses]"); |
144 | AE::log 9 => "connecting to $self->{id} with [@$addresses]"; |
139 | |
145 | |
|
|
146 | my $monitor = $AnyEvent::MP::Kernel::CONFIG->{monitor_timeout}; |
140 | my $interval = $AnyEvent::MP::Kernel::CONFIG->{connect_interval}; |
147 | my $interval = $AnyEvent::MP::Kernel::CONFIG->{connect_interval}; |
141 | |
148 | |
142 | $interval = ($monitor - $interval) / @addresses |
149 | $interval = ($monitor - $interval) / @$addresses |
143 | if ($monitor - $interval) / @addresses < $interval; |
150 | if ($monitor - $interval) / @$addresses < $interval; |
144 | |
151 | |
145 | $interval = 0.4 if $interval < 0.4; |
152 | $interval = 0.4 if $interval < 0.4; |
146 | |
153 | |
147 | my @endpoints; |
154 | my @endpoints = reverse @$addresses; |
148 | |
155 | |
149 | $self->{connect_w} = AE::timer 0.050 * rand, $interval * (0.9 + 0.1 * rand), sub { |
156 | $self->{connect_w} = AE::timer 0, $interval * (0.9 + 0.1 * rand), sub { |
150 | @endpoints = @addresses |
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151 | unless @endpoints; |
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152 | |
|
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153 | my $endpoint = shift @endpoints; |
157 | my $endpoint = pop @endpoints; |
154 | |
158 | |
155 | $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} at $endpoint"); |
159 | AE::log 9 => "connecting to $self->{id} at $endpoint"; |
156 | |
160 | |
157 | $self->{trial}{$endpoint} ||= do { |
161 | $self->{trial}{$endpoint} ||= do { |
158 | my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint |
162 | my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint |
159 | or return $AnyEvent::MP::Kernel::WARN->(1, "$self->{id}: not a resolved node reference."); |
163 | or return AE::log critical => "$self->{id}: '$endpoint' is not a resolved node reference."; |
160 | |
164 | |
161 | AnyEvent::MP::Transport::mp_connect |
165 | AnyEvent::MP::Transport::mp_connect |
162 | $host, $port, |
166 | $host, $port, |
163 | sub { delete $self->{trial}{$endpoint} }, |
167 | sub { delete $self->{trial}{$endpoint} }, |
164 | }; |
168 | }; |
… | |
… | |
166 | } |
170 | } |
167 | |
171 | |
168 | sub kill { |
172 | sub kill { |
169 | my ($self, $port, @reason) = @_; |
173 | my ($self, $port, @reason) = @_; |
170 | |
174 | |
171 | $self->send (["", kil => $port, @reason]); |
175 | $self->{send} (["", kil => $port, @reason]); |
172 | } |
176 | } |
173 | |
177 | |
174 | sub monitor { |
178 | sub monitor { |
175 | my ($self, $portid, $cb) = @_; |
179 | my ($self, $portid, $cb) = @_; |
176 | |
180 | |
… | |
… | |
194 | $self->send (["", mon0 => $portid]); |
198 | $self->send (["", mon0 => $portid]); |
195 | delete $self->{monitor}{$portid}; |
199 | delete $self->{monitor}{$portid}; |
196 | } |
200 | } |
197 | } |
201 | } |
198 | |
202 | |
199 | # used for direct slave connections as well |
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200 | package AnyEvent::MP::Node::Direct; |
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201 | |
|
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202 | use base "AnyEvent::MP::Node::External"; |
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203 | |
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|
204 | package AnyEvent::MP::Node::Self; |
203 | package AnyEvent::MP::Node::Self; # the local node |
205 | |
204 | |
206 | use base "AnyEvent::MP::Node"; |
205 | use base "AnyEvent::MP::Node"; |
207 | |
206 | |
208 | sub connect { |
207 | sub connect { |
209 | # we are trivially connected |
208 | # we are trivially connected |
… | |
… | |
212 | # delay every so often to avoid recursion, also used to delay after spawn |
211 | # delay every so often to avoid recursion, also used to delay after spawn |
213 | our $DELAY = -50; |
212 | our $DELAY = -50; |
214 | our @DELAY; |
213 | our @DELAY; |
215 | our $DELAY_W; |
214 | our $DELAY_W; |
216 | |
215 | |
217 | sub _send_delayed { |
216 | our $send_delayed = sub { |
218 | local $AnyEvent::MP::Kernel::SRCNODE = $AnyEvent::MP::Kernel::NODE{""}; |
217 | $AnyEvent::MP::Kernel::SRCNODE = $AnyEvent::MP::Kernel::NODE; |
219 | (shift @DELAY)->() |
218 | (shift @DELAY)->() |
220 | while @DELAY; |
219 | while @DELAY; |
221 | undef $DELAY_W; |
220 | undef $DELAY_W; |
222 | $DELAY = -50; |
221 | $DELAY = -50; |
223 | } |
222 | }; |
224 | |
223 | |
225 | sub transport_reset { |
224 | sub transport_reset { |
226 | my ($self) = @_; |
225 | my ($self) = @_; |
227 | |
226 | |
228 | Scalar::Util::weaken $self; |
227 | Scalar::Util::weaken $self; |
229 | |
228 | |
230 | $self->{send} = sub { |
229 | $self->{send} = sub { |
231 | if ($DELAY++ >= 0) { |
230 | if (++$DELAY > 0) { |
232 | my $msg = $_[0]; |
231 | my $msg = $_[0]; |
233 | push @DELAY, sub { AnyEvent::MP::Kernel::_inject (@$msg) }; |
232 | push @DELAY, sub { AnyEvent::MP::Kernel::_inject (@$msg) }; |
234 | $DELAY_W ||= AE::timer 0, 0, \&_send_delayed; |
233 | $DELAY_W ||= AE::timer 0, 0, $send_delayed; |
235 | return; |
234 | return; |
236 | } |
235 | } |
237 | |
236 | |
238 | local $AnyEvent::MP::Kernel::SRCNODE = $self; |
237 | local $AnyEvent::MP::Kernel::SRCNODE = $AnyEvent::MP::Kernel::NODE; |
239 | AnyEvent::MP::Kernel::_inject (@{ $_[0] }); |
238 | AnyEvent::MP::Kernel::_inject (@{ $_[0] }); |
240 | }; |
239 | }; |
241 | } |
240 | } |
242 | |
241 | |
243 | sub transport_connect { |
242 | sub transport_connect { |
244 | my ($self, $tp) = @_; |
243 | my ($self, $tp) = @_; |
245 | |
244 | |
246 | $AnyEvent::MP::Kernel::WARN->(9, "I refuse to talk to myself ($tp->{peerhost}:$tp->{peerport})"); |
245 | AE::log 9 => "I refuse to talk to myself ($tp->{peerhost}:$tp->{peerport})"; |
247 | } |
246 | } |
248 | |
247 | |
249 | sub kill { |
248 | sub kill { |
250 | my ($self, $port, @reason) = @_; |
249 | my (undef, @args) = @_; |
251 | |
|
|
252 | my $delay_cb = sub { |
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253 | delete $AnyEvent::MP::Kernel::PORT{$port} |
|
|
254 | or return; # killing nonexistent ports is O.K. |
|
|
255 | delete $AnyEvent::MP::Kernel::PORT_DATA{$port}; |
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|
256 | |
|
|
257 | my $mon = delete $AnyEvent::MP::Kernel::LMON{$port} |
|
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258 | or !@reason |
|
|
259 | or $AnyEvent::MP::Kernel::WARN->(2, "unmonitored local port $port died with reason: @reason"); |
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|
260 | |
|
|
261 | $_->(@reason) for values %$mon; |
|
|
262 | }; |
|
|
263 | |
250 | |
264 | # we _always_ delay kil's, to avoid calling mon callbacks |
251 | # we _always_ delay kil's, to avoid calling mon callbacks |
265 | # from anything but the event loop context. |
252 | # from anything but the event loop context. |
266 | $DELAY = 1; |
253 | $DELAY = 1; |
267 | push @DELAY, $delay_cb; |
254 | push @DELAY, sub { AnyEvent::MP::Kernel::_kill (@args) }; |
268 | $DELAY_W ||= AE::timer 0, 0, \&_send_delayed; |
255 | $DELAY_W ||= AE::timer 0, 0, $send_delayed; |
269 | } |
256 | } |
270 | |
257 | |
271 | sub monitor { |
258 | sub monitor { |
272 | my ($self, $portid, $cb) = @_; |
259 | # maybe always delay, too? |
273 | |
260 | if ($DELAY_W) { |
274 | my $delay_cb = sub { |
261 | my @args = @_; |
275 | return $cb->(no_such_port => "cannot monitor nonexistent port", "$self->{id}#$portid") |
262 | push @DELAY, sub { AnyEvent::MP::Kernel::_monitor (@args) }; |
276 | unless exists $AnyEvent::MP::Kernel::PORT{$portid}; |
263 | return; |
277 | |
|
|
278 | $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0} = $cb; |
|
|
279 | }; |
264 | } |
280 | |
265 | &AnyEvent::MP::Kernel::_monitor; |
281 | $DELAY_W ? push @DELAY, $delay_cb : &$delay_cb; |
|
|
282 | } |
266 | } |
283 | |
267 | |
284 | sub unmonitor { |
268 | sub unmonitor { |
285 | my ($self, $portid, $cb) = @_; |
269 | # no need to always delay |
286 | |
270 | if ($DELAY_W) { |
287 | my $delay_cb = sub { |
271 | my @args = @_; |
288 | delete $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0}; |
272 | push @DELAY, sub { AnyEvent::MP::Kernel::_unmonitor (@args) }; |
|
|
273 | return; |
289 | }; |
274 | } |
290 | |
275 | |
291 | $DELAY_W ? push @DELAY, $delay_cb : &$delay_cb; |
276 | &AnyEvent::MP::Kernel::_unmonitor; |
292 | } |
277 | } |
293 | |
278 | |
294 | =head1 SEE ALSO |
279 | =head1 SEE ALSO |
295 | |
280 | |
296 | L<AnyEvent::MP>. |
281 | L<AnyEvent::MP>. |