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Comparing AnyEvent-MP/MP/Node.pm (file contents):
Revision 1.1 by root, Fri Jul 31 20:55:46 2009 UTC vs.
Revision 1.52 by root, Sat Mar 13 20:29:04 2010 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 $self->connect;
46 } 60 };
47} 61}
48 62
63# called each time we fail to establish a connection,
64# or the existing connection failed
49sub set_transport { 65sub transport_error {
66 my ($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 %$mon;
78 }
79
80 AnyEvent::MP::Kernel::_inject_nodeevent ($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} || $self->{connect_to};
86}
87
88# called after handshake was successful
89sub transport_connect {
50 my ($self, $transport) = @_; 90 my ($self, $transport) = @_;
51 91
52 delete $self->{trial}; 92 delete $self->{trial};
93
94 $self->transport_error (transport_error => $self->{id}, "switched connections")
95 if $self->{transport};
96
97 delete $self->{connect_addr};
53 delete $self->{next_connect}; 98 delete $self->{connect_w};
99 delete $self->{connect_to};
54 100
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; 101 $self->{transport} = $transport;
66 102
103 my $transport_send = $transport->{send};
104
105 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1);
106
107 $self->{send} = $transport_send;
108
67 $transport->send ($_) 109 $transport_send->($_)
68 for @{ delete $self->{queue} || [] }; 110 for @{ delete $self->{queue} || [] };
69} 111}
70 112
71sub clr_transport {
72 my ($self) = @_;
73
74 delete $self->{transport};
75 warn "clr_transport\n";
76}
77
78sub connect { 113sub connect {
79 my ($self) = @_; 114 my ($self, @addresses) = @_;
115
116 return if $self->{transport};
80 117
81 Scalar::Util::weaken $self; 118 Scalar::Util::weaken $self;
82 119
83 unless (exists $self->{n_noderef}) { 120 my $monitor = $AnyEvent::MP::Kernel::CONFIG->{monitor_timeout};
84 (AnyEvent::MP::normalise_noderef ($self->{noderef}))->cb (sub {
85 $self or return;
86 my $noderef = shift->recv;
87 121
88 $self->{n_noderef} = $noderef; 122 $self->{connect_to} ||= AE::timer $monitor, 0, sub {
123 $self->transport_error (transport_error => $self->{id}, "unable to connect");
124 };
89 125
90 $AnyEvent::MP::NODE{$_} = $self 126 return unless @addresses;
91 for split /,/, $noderef;
92 127
93 $self->connect; 128 if ($self->{connect_w}) {
94 }); 129 # sometimes we get told about new addresses after we started to connect
130 unshift @{$self->{connect_addr}}, @addresses;
95 return; 131 return;
96 } 132 }
97 133
98 $self->{retry} ||= [split /,/, $self->{n_noderef}]; 134 $self->{connect_addr} = \@addresses; # a bit weird, but efficient
99 135
100 my $endpoint = shift @{ $self->{retry} }; 136 $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} with [@addresses]");
101 137
102 if (defined $endpoint) { 138 my $interval = $AnyEvent::MP::Kernel::CONFIG->{connect_interval};
139
140 $interval = ($monitor - $interval) / @addresses
141 if ($monitor - $interval) / @addresses < $interval;
142
143 $interval = 0.4 if $interval < 0.4;
144
145 my @endpoints;
146
147 $self->{connect_w} = AE::timer 0.050 * rand, $interval * (0.9 + 0.1 * rand), sub {
148 @endpoints = @addresses
149 unless @endpoints;
150
151 my $endpoint = shift @endpoints;
152
153 $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} at $endpoint");
154
103 $self->{trial}{$endpoint} ||= do { 155 $self->{trial}{$endpoint} ||= do {
104 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint 156 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint
105 or return; 157 or return $AnyEvent::MP::Kernel::WARN->(1, "$self->{id}: not a resolved node reference.");
106 158
107 my ($w, $g);
108
109 $w = AE::timer $AnyEvent::MP::CONNECT_TIMEOUT, 0, sub {
110 delete $self->{trial}{$endpoint};
111 };
112 $g = AnyEvent::MP::Transport::mp_connect 159 AnyEvent::MP::Transport::mp_connect
113 $host, $port, 160 $host, $port,
114 sub {
115 delete $self->{trial}{$endpoint} 161 sub { delete $self->{trial}{$endpoint} },
116 unless @_;
117 $g = shift;
118 };
119 ;
120
121 [$w, \$g]
122 }; 162 };
123 } else {
124 delete $self->{retry};
125 } 163 };
164}
126 165
127 $self->{next_connect} = AE::timer $AnyEvent::MP::CONNECT_INTERVAL, 0, sub { 166sub kill {
128 $self->connect; 167 my ($self, $port, @reason) = @_;
168
169 $self->send (["", kil => $port, @reason]);
170}
171
172sub monitor {
173 my ($self, $portid, $cb) = @_;
174
175 my $list = $self->{lmon}{$portid} ||= [];
176
177 $self->send (["", mon1 => $portid])
178 unless @$list || !length $portid;
179
180 push @$list, $cb;
181}
182
183sub unmonitor {
184 my ($self, $portid, $cb) = @_;
185
186 my $list = $self->{lmon}{$portid}
187 or return;
188
189 @$list = grep $_ != $cb, @$list;
190
191 unless (@$list) {
192 $self->send (["", mon0 => $portid]);
193 delete $self->{monitor}{$portid};
129 }; 194 }
130} 195}
196
197# used for direct slave connections as well
198package AnyEvent::MP::Node::Direct;
199
200use base "AnyEvent::MP::Node::External";
131 201
132package AnyEvent::MP::Node::Self; 202package AnyEvent::MP::Node::Self;
133 203
134use base "AnyEvent::MP::Node"; 204use base "AnyEvent::MP::Node";
135 205
206sub connect {
207 # we are trivially connected
208}
209
210# delay every so often to avoid recursion, also used to delay after spawn
211our $DELAY = -50;
212our @DELAY;
213our $DELAY_W;
214
215sub _send_delayed {
216 local $AnyEvent::MP::Kernel::SRCNODE = $AnyEvent::MP::Kernel::NODE{""};
217 (shift @DELAY)->()
218 while @DELAY;
219 undef $DELAY_W;
220 $DELAY = -50;
221}
222
136sub set_transport { 223sub transport_reset {
137 die "FATAL error, set_transport was called"; 224 my ($self) = @_;
138}
139 225
140sub send { 226 Scalar::Util::weaken $self;
141 die "self-send not implemented yet\n";#d# 227
228 $self->{send} = sub {
229 if ($DELAY++ >= 0) {
230 my $msg = $_[0];
231 push @DELAY, sub { AnyEvent::MP::Kernel::_inject (@$msg) };
232 $DELAY_W ||= AE::timer 0, 0, \&_send_delayed;
233 return;
234 }
235
236 local $AnyEvent::MP::Kernel::SRCNODE = $self;
237 AnyEvent::MP::Kernel::_inject (@{ $_[0] });
238 };
239}
240
241sub transport_connect {
242 my ($self, $tp) = @_;
243
244 $AnyEvent::MP::Kernel::WARN->(9, "I refuse to talk to myself ($tp->{peerhost}:$tp->{peerport})");
245}
246
247sub kill {
248 my (undef, @args) = @_;
249
250 # we _always_ delay kil's, to avoid calling mon callbacks
251 # from anything but the event loop context.
252 $DELAY = 1;
253 push @DELAY, sub { AnyEvent::MP::Kernel::_kill (@args) };
254 $DELAY_W ||= AE::timer 0, 0, \&_send_delayed;
255}
256
257sub monitor {
258 # maybe always delay, too?
259 if ($DELAY_W) {
260 my @args = @_;
261 push @DELAY, sub { AnyEvent::MP::Kernel::_monitor (@args) };
262 return;
263 }
264 &AnyEvent::MP::Kernel::_monitor;
265}
266
267sub unmonitor {
268 # no need to always delay
269 if ($DELAY_W) {
270 my @args = @_;
271 push @DELAY, sub { AnyEvent::MP::Kernel::_unmonitor (@args) };
272 return;
273 }
274
275 &AnyEvent::MP::Kernel::_unmonitor;
142} 276}
143 277
144=head1 SEE ALSO 278=head1 SEE ALSO
145 279
146L<AnyEvent>. 280L<AnyEvent::MP>.
147 281
148=head1 AUTHOR 282=head1 AUTHOR
149 283
150 Marc Lehmann <schmorp@schmorp.de> 284 Marc Lehmann <schmorp@schmorp.de>
151 http://home.schmorp.de/ 285 http://home.schmorp.de/

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