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Comparing AnyEvent-MP/MP/Node.pm (file contents):
Revision 1.2 by root, Sat Aug 1 07:11:45 2009 UTC vs.
Revision 1.44 by root, Fri Oct 2 20:40:10 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 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 warn "send $self $self->{noderef}\n";#d# 53 delete $self->{transport};
40 54
41 if ($self->{transport}) { 55 Scalar::Util::weaken $self;
42 $self->{transport}->send ($msg); 56
43 } elsif ($self->{queue}) { 57 $self->{send} = sub {
44 push @{ $self->{queue} }, $msg; 58 push @{$self->{queue}}, shift;
45 } else {
46 $self->{queue} = [$msg];
47 $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 %$mon;
48 } 78 }
49}
50 79
51sub set_transport { 80 AnyEvent::MP::Kernel::_inject_nodeevent ($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} || $self->{connect_to};
86}
87
88# called after handshake was successful
89sub transport_connect {
52 my ($self, $transport) = @_; 90 my ($self, $transport) = @_;
53 91
54 delete $self->{trial}; 92 delete $self->{trial};
93
94 $self->transport_error (transport_error => "switched connections")
95 if $self->{transport};
96
97 delete $self->{connect_addr};
55 delete $self->{next_connect}; 98 delete $self->{connect_w};
99 delete $self->{connect_to};
56 100
57 use Data::Dumper; warn "set_transport $self->{noderef} $self $AnyEvent::MP::NODE{'10.0.0.1:4040'}\n";#d#
58
59 if (
60 exists $self->{remote_uniq}
61 && $self->{remote_uniq} ne $transport->{remote_uniq}
62 ) {
63 # uniq changed, drop queue
64 delete $self->{queue};
65 #TODO: "DOWN"
66 }
67
68 $self->{remote_uniq} = $transport->{remote_uniq};
69 $self->{transport} = $transport; 101 $self->{transport} = $transport;
102
103 my $transport_send = $transport->can ("send");
104
105 $self->{send} = sub {
106 $transport_send->($transport, $_[0]);
107 };
108
109 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1);
70 110
71 $transport->send ($_) 111 $transport->send ($_)
72 for @{ delete $self->{queue} || [] }; 112 for @{ delete $self->{queue} || [] };
73} 113}
74 114
75sub clr_transport {
76 my ($self) = @_;
77
78 delete $self->{transport};
79 warn "clr_transport\n";
80}
81
82sub connect { 115sub connect {
83 my ($self) = @_; 116 my ($self, @addresses) = @_;
117
118 return if $self->{transport};
84 119
85 Scalar::Util::weaken $self; 120 Scalar::Util::weaken $self;
86 121
87 unless (exists $self->{n_noderef}) { 122 my $monitor = $AnyEvent::MP::Kernel::CONFIG->{monitor_timeout};
88 (AnyEvent::MP::normalise_noderef ($self->{noderef}))->cb (sub {
89 $self or return;
90 my $noderef = shift->recv;
91 123
92 $self->{n_noderef} = $noderef; 124 $self->{connect_to} ||= AE::timer $monitor, 0, sub {
125 $self->transport_error (transport_error => $self->{id}, "unable to connect");
126 };
93 127
94 $AnyEvent::MP::NODE{$_} = $self 128 return unless @addresses;
95 for split /,/, $noderef;
96 129
97 $self->connect; 130 if ($self->{connect_w}) {
98 }); 131 # sometimes we get told about new addresses after we started to connect
132 unshift @{$self->{connect_addr}}, @addresses;
99 return; 133 return;
100 } 134 }
101 135
102 $self->{retry} ||= [split /,/, $self->{n_noderef}]; 136 $self->{connect_addr} = \@addresses; # a bit weird, but efficient
103 137
104 my $endpoint = shift @{ $self->{retry} }; 138 $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} with [@addresses]");
105 139
106 if (defined $endpoint) { 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
107 $self->{trial}{$endpoint} ||= do { 157 $self->{trial}{$endpoint} ||= do {
108 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint 158 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint
109 or return; 159 or return $AnyEvent::MP::Kernel::WARN->(1, "$self->{id}: not a resolved node reference.");
110 160
111 my ($w, $g);
112
113 $w = AE::timer $AnyEvent::MP::CONNECT_TIMEOUT, 0, sub {
114 delete $self->{trial}{$endpoint};
115 };
116 $g = AnyEvent::MP::Transport::mp_connect 161 AnyEvent::MP::Transport::mp_connect
117 $host, $port, 162 $host, $port,
118 sub {
119 delete $self->{trial}{$endpoint} 163 sub { delete $self->{trial}{$endpoint} },
120 unless @_;
121 $g = shift;
122 };
123 ;
124
125 [$w, \$g]
126 }; 164 };
127 } else { 165 };
128 delete $self->{retry}; 166}
167
168sub kill {
169 my ($self, $port, @reason) = @_;
170
171 $self->send (["", kil => $port, @reason]);
172}
173
174sub monitor {
175 my ($self, $portid, $cb) = @_;
176
177 my $list = $self->{lmon}{$portid} ||= [];
178
179 $self->send (["", mon1 => $portid])
180 unless @$list || !length $portid;
181
182 push @$list, $cb;
183}
184
185sub unmonitor {
186 my ($self, $portid, $cb) = @_;
187
188 my $list = $self->{lmon}{$portid}
189 or return;
190
191 @$list = grep $_ != $cb, @$list;
192
193 unless (@$list) {
194 $self->send (["", mon0 => $portid]);
195 delete $self->{monitor}{$portid};
129 } 196 }
130
131 $self->{next_connect} = AE::timer $AnyEvent::MP::CONNECT_INTERVAL, 0, sub {
132 $self->connect;
133 };
134} 197}
198
199# used for direct slave connections as well
200package AnyEvent::MP::Node::Direct;
201
202use base "AnyEvent::MP::Node::External";
135 203
136package AnyEvent::MP::Node::Self; 204package AnyEvent::MP::Node::Self;
137 205
138use base "AnyEvent::MP::Node"; 206use base "AnyEvent::MP::Node";
139 207
208sub connect {
209 # we are trivially connected
210}
211
212# delay every so often to avoid recursion, also used to delay after spawn
213our $DELAY = -50;
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 $DELAY = -50;
223}
224
140sub set_transport { 225sub transport_reset {
141 die "FATAL error, set_transport was called"; 226 my ($self) = @_;
142}
143 227
144sub send { 228 Scalar::Util::weaken $self;
229
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 = $self;
145 AnyEvent::MP::_inject ($_[1]); 239 AnyEvent::MP::Kernel::_inject (@{ $_[0] });
240 };
241}
242
243sub transport_connect {
244 my ($self, $tp) = @_;
245
246 $AnyEvent::MP::Kernel::WARN->(9, "I refuse to talk to myself ($tp->{peerhost}:$tp->{peerport})");
247}
248
249sub kill {
250 my ($self, $port, @reason) = @_;
251
252 my $delay_cb = sub {
253 delete $AnyEvent::MP::Kernel::PORT{$port}
254 or return; # killing nonexistent ports is O.K.
255 delete $AnyEvent::MP::Kernel::PORT_DATA{$port};
256
257 my $mon = delete $AnyEvent::MP::Kernel::LMON{$port}
258 or !@reason
259 or $AnyEvent::MP::Kernel::WARN->(8, "unmonitored local port $port died with reason: @reason");
260
261 $_->(@reason) for values %$mon;
262 };
263
264 # we _always_ delay kil's, to avoid calling mon callbacks
265 # from anything but the event loop context.
266 $DELAY = 1;
267 push @DELAY, $delay_cb;
268}
269
270sub monitor {
271 my ($self, $portid, $cb) = @_;
272
273 my $delay_cb = sub {
274 return $cb->(no_such_port => "cannot monitor nonexistent port", "$self->{id}#$portid")
275 unless exists $AnyEvent::MP::Kernel::PORT{$portid};
276
277 $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0} = $cb;
278 };
279
280 $DELAY_W ? push @DELAY, $delay_cb : &$delay_cb;
281}
282
283sub unmonitor {
284 my ($self, $portid, $cb) = @_;
285
286 my $delay_cb = sub {
287 delete $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0};
288 };
289
290 $DELAY_W ? push @DELAY, $delay_cb : &$delay_cb;
146} 291}
147 292
148=head1 SEE ALSO 293=head1 SEE ALSO
149 294
150L<AnyEvent>. 295L<AnyEvent::MP>.
151 296
152=head1 AUTHOR 297=head1 AUTHOR
153 298
154 Marc Lehmann <schmorp@schmorp.de> 299 Marc Lehmann <schmorp@schmorp.de>
155 http://home.schmorp.de/ 300 http://home.schmorp.de/

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