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Comparing AnyEvent-MP/MP/Node.pm (file contents):
Revision 1.25 by root, Sat Aug 15 15:08:07 2009 UTC vs.
Revision 1.42 by root, Wed Sep 23 11:57:16 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
… …
19use AnyEvent::Socket (); 21use AnyEvent::Socket ();
20 22
21use AnyEvent::MP::Transport (); 23use AnyEvent::MP::Transport ();
22 24
23sub new { 25sub new {
24 my ($self, $noderef) = @_; 26 my ($self, $id) = @_;
25 27
26 $self = bless { noderef => $noderef }, $self; 28 $self = bless { id => $id }, $self;
27 29
30 $self->init;
28 $self->transport_reset; 31 $self->transport_reset;
29 32
30 $self 33 $self
34}
35
36sub init {
37 #
31} 38}
32 39
33sub send { 40sub send {
34 &{ shift->{send} } 41 &{ shift->{send} }
35} 42}
36 43
44# nodes reachable via the network
37package AnyEvent::MP::Node::External; 45package AnyEvent::MP::Node::External;
38 46
39use base "AnyEvent::MP::Node"; 47use base "AnyEvent::MP::Node";
40 48
41# called at init time, mostly sets {send} 49# called at init time, mostly sets {send}
… …
48 56
49 $self->{send} = sub { 57 $self->{send} = sub {
50 push @{$self->{queue}}, shift; 58 push @{$self->{queue}}, shift;
51 $self->connect; 59 $self->connect;
52 }; 60 };
53
54 $self->connect
55 if $self->{autoconnect};
56} 61}
57 62
58# called only after successful handshake 63# called each time we fail to establish a connection,
64# or the existing connection failed
59sub transport_error { 65sub transport_error {
60 my ($self, @reason) = @_; 66 my ($self, @reason) = @_;
61 67
62 my $no_transport = !$self->{transport}; 68 my $no_transport = !$self->{transport};
63 69
64 delete $self->{connect_w}; 70 delete $self->{connect_w};
65 delete $self->{connect_to}; 71 delete $self->{connect_to};
66 72
67 delete $self->{queue}; 73 delete $self->{queue};
68 $self->transport_reset; 74 $self->transport_reset;
69
70 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 0, @reason)
71 unless $no_transport;
72 75
73 if (my $mon = delete $self->{lmon}) { 76 if (my $mon = delete $self->{lmon}) {
74 $_->(@reason) for map @$_, values %$mon; 77 $_->(@reason) for map @$_, values %$mon;
75 } 78 }
79
80 AnyEvent::MP::Kernel::_inject_nodeevent ($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} || $self->{connect_to};
76} 86}
77 87
78# called after handshake was successful 88# called after handshake was successful
79sub transport_connect { 89sub transport_connect {
80 my ($self, $transport) = @_; 90 my ($self, $transport) = @_;
81 91
82 # first connect with a master node 92 delete $self->{trial};
83 $AnyEvent::MP::Kernel::SLAVE->($self)
84 if ref $AnyEvent::MP::Kernel::SLAVE;
85 93
86 $self->transport_error (transport_error => "switched connections") 94 $self->transport_error (transport_error => "switched connections")
87 if $self->{transport}; 95 if $self->{transport};
88 96
97 delete $self->{connect_addr};
89 delete $self->{connect_w}; 98 delete $self->{connect_w};
90 delete $self->{connect_to}; 99 delete $self->{connect_to};
91 100
92 $self->{transport} = $transport; 101 $self->{transport} = $transport;
93 102
… …
102 $transport->send ($_) 111 $transport->send ($_)
103 for @{ delete $self->{queue} || [] }; 112 for @{ delete $self->{queue} || [] };
104} 113}
105 114
106sub connect { 115sub connect {
107 my ($self) = @_; 116 my ($self, @addresses) = @_;
108 117
109 return if $self->{transport}; 118 return if $self->{transport};
110 119
111 Scalar::Util::weaken $self; 120 Scalar::Util::weaken $self;
112 121
122 my $monitor = $AnyEvent::MP::Kernel::CONFIG->{monitor_timeout};
123
113 $self->{connect_to} ||= AE::timer 124 $self->{connect_to} ||= AE::timer $monitor, 0, sub {
114 $AnyEvent::MP::Config::CFG{monitor_timeout} || $AnyEvent::MP::Kernel::MONITOR_TIMEOUT,
115 0,
116 sub {
117 $self->transport_error (transport_error => $self->{noderef}, "unable to connect"); 125 $self->transport_error (transport_error => $self->{id}, "unable to connect");
126 };
127
128 return unless @addresses;
129
130 if ($self->{connect_w}) {
131 # sometimes we get told about new addresses after we started to connect
132 unshift @{$self->{connect_addr}}, @addresses;
133 return;
134 }
135
136 $self->{connect_addr} = \@addresses; # a bit weird, but efficient
137
138 $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} with [@addresses]");
139
140 my $interval = $AnyEvent::MP::Kernel::CONFIG->{connect_interval};
141
142 $interval = ($monitor - $interval) / @addresses
143 if ($monitor - $interval) / @addresses < $interval;
144
145 $interval = 0.4 if $interval < 0.4;
146
147 my @endpoints;
148
149 $self->{connect_w} = AE::timer 0.050 * rand, $interval * (0.9 + 0.1 * rand), sub {
150 @endpoints = @addresses
151 unless @endpoints;
152
153 my $endpoint = shift @endpoints;
154
155 $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} at $endpoint");
156
157 $self->{trial}{$endpoint} ||= do {
158 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint
159 or return $AnyEvent::MP::Kernel::WARN->(1, "$self->{id}: not a resolved node reference.");
160
161 AnyEvent::MP::Transport::mp_connect
162 $host, $port,
163 sub { delete $self->{trial}{$endpoint} },
118 }; 164 };
119
120 unless ($self->{connect_w}) {
121 my @endpoints;
122 my %trial;
123
124 $self->{connect_w} = AE::timer
125 0,
126 $AnyEvent::MP::Config::CFG{connect_interval} || $AnyEvent::MP::Kernel::CONNECT_INTERVAL,
127 sub {
128 @endpoints = split /,/, $self->{noderef}
129 unless @endpoints;
130
131 my $endpoint = shift @endpoints;
132
133 $trial{$endpoint} ||= do {
134 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint
135 or return $AnyEvent::MP::Kernel::WARN->(1, "$self->{noderef}: not a resolved node reference.");
136
137 AnyEvent::MP::Transport::mp_connect
138 $host, $port,
139 sub { delete $trial{$endpoint} }
140 ;
141 };
142 }
143 ;
144 } 165 };
145} 166}
146 167
147sub kill { 168sub kill {
148 my ($self, $port, @reason) = @_; 169 my ($self, $port, @reason) = @_;
149 170
… …
173 $self->send (["", mon0 => $portid]); 194 $self->send (["", mon0 => $portid]);
174 delete $self->{monitor}{$portid}; 195 delete $self->{monitor}{$portid};
175 } 196 }
176} 197}
177 198
199# used for direct slave connections as well
178package AnyEvent::MP::Node::Direct; 200package AnyEvent::MP::Node::Direct;
179 201
180use base "AnyEvent::MP::Node::External"; 202use base "AnyEvent::MP::Node::External";
181 203
182package AnyEvent::MP::Node::Indirect; 204package AnyEvent::MP::Node::Self;
183 205
184use base "AnyEvent::MP::Node::Direct"; 206use base "AnyEvent::MP::Node";
185 207
186sub master { 208sub connect {
187 my ($self) = @_; 209 # we are trivially connected
210}
188 211
189 my (undef, $master) = split /\@/, $self->{noderef}, 2; 212# delay every so often to avoid recursion, also used to delay after spawn
190 $master =~ s/!/,/g; 213our $DELAY;
191 $master 214our @DELAY;
215our $DELAY_W;
216
217sub _send_delayed {
218 local $AnyEvent::MP::Kernel::SRCNODE = $AnyEvent::MP::Kernel::NODE{""};
219 (shift @DELAY)->()
220 while @DELAY;
221 undef $DELAY_W;
222 $DELAY = -50;
192} 223}
193 224
194sub transport_reset { 225sub transport_reset {
195 my ($self) = @_; 226 my ($self) = @_;
196 227
197 if ($self->{transport}) {
198 # as an optimisation, immediately nuke slave nodes
199 delete $AnyEvent::MP::Kernel::NODE{$self->{noderef}};
200 } else {
201 $self->SUPER::transport_reset;
202 return;#d##TODO#
203
204 my $noderef = $self->{noderef};
205 my $master = $self->master;
206
207 # slave nodes are so cool - we can always send to them :)
208
209 $self->{send} = sub {
210 $self->connect;
211 snd $master, snd => $noderef, @_;
212 };
213 }
214}
215
216sub connect {
217 my ($self) = @_;
218
219 #TODO#
220# # ask for a connection, #TODO# rate-limit this somehow
221# snd $self->master, relay => $self->{noderef}, connect_node => $AnyEvent::MP::Kernel::NODE;
222}
223
224package AnyEvent::MP::Node::Self;
225
226use base "AnyEvent::MP::Node";
227
228sub connect {
229 # we are trivially connected
230}
231
232sub transport_reset {
233 my ($self) = @_;
234
235 Scalar::Util::weaken $self; 228 Scalar::Util::weaken $self;
236 229
237 $self->{send} = sub { 230 $self->{send} = sub {
231 if ($DELAY++ >= 0) {
232 my $msg = $_[0];
233 push @DELAY, sub { AnyEvent::MP::Kernel::_inject (@$msg) };
234 $DELAY_W ||= AE::timer 0, 0, \&_send_delayed;
235 return;
236 }
237
238 local $AnyEvent::MP::Kernel::SRCNODE = $self; 238 local $AnyEvent::MP::Kernel::SRCNODE = $self;
239 AnyEvent::MP::Kernel::_inject (@{ $_[0] }); 239 AnyEvent::MP::Kernel::_inject (@{ $_[0] });
240 }; 240 };
241} 241}
242 242
243sub transport_connect {
244 my ($self, $tp) = @_;
245
246 $AnyEvent::MP::Kernel::WARN->(9, "I refuse to talk to myself ($tp->{peerhost}:$tp->{peerport})");
247}
248
243sub kill { 249sub kill {
244 my ($self, $port, @reason) = @_; 250 my ($self, $port, @reason) = @_;
245 251
252 my $delay_cb = sub {
246 delete $AnyEvent::MP::Kernel::PORT{$port}; 253 delete $AnyEvent::MP::Kernel::PORT{$port}
254 or return; # killing nonexistent ports is O.K.
247 delete $AnyEvent::MP::Kernel::PORT_DATA{$port}; 255 delete $AnyEvent::MP::Kernel::PORT_DATA{$port};
248 256
249 my $mon = delete $AnyEvent::MP::Kernel::LMON{$port} 257 my $mon = delete $AnyEvent::MP::Kernel::LMON{$port}
250 or !@reason 258 or !@reason
251 or $AnyEvent::MP::Kernel::WARN->(2, "unmonitored local port $port died with reason: @reason"); 259 or $AnyEvent::MP::Kernel::WARN->(8, "unmonitored local port $port died with reason: @reason");
252 260
253 $_->(@reason) for values %$mon; 261 $_->(@reason) for values %$mon;
262 };
263
264 $DELAY_W ? push @DELAY, $delay_cb : &$delay_cb;
254} 265}
255 266
256sub monitor { 267sub monitor {
257 my ($self, $portid, $cb) = @_; 268 my ($self, $portid, $cb) = @_;
258 269
270 my $delay_cb = sub {
259 return $cb->(no_such_port => "cannot monitor nonexistent port") 271 return $cb->(no_such_port => "cannot monitor nonexistent port", "$self->{id}#$portid")
260 unless exists $AnyEvent::MP::Kernel::PORT{$portid}; 272 unless exists $AnyEvent::MP::Kernel::PORT{$portid};
261 273
262 $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0} = $cb; 274 $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0} = $cb;
275 };
276
277 $DELAY_W ? push @DELAY, $delay_cb : &$delay_cb;
263} 278}
264 279
265sub unmonitor { 280sub unmonitor {
266 my ($self, $portid, $cb) = @_; 281 my ($self, $portid, $cb) = @_;
267 282
283 my $delay_cb = sub {
268 delete $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0}; 284 delete $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0};
285 };
286
287 $DELAY_W ? push @DELAY, $delay_cb : &$delay_cb;
269} 288}
270 289
271=head1 SEE ALSO 290=head1 SEE ALSO
272 291
273L<AnyEvent::MP>. 292L<AnyEvent::MP>.

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