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Comparing AnyEvent-MP/MP/Node.pm (file contents):
Revision 1.16 by root, Sun Aug 9 16:08:16 2009 UTC vs.
Revision 1.31 by root, Fri Aug 28 23:06:33 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
… …
18use AnyEvent::Util (); 20use AnyEvent::Util ();
19use AnyEvent::Socket (); 21use AnyEvent::Socket ();
20 22
21use AnyEvent::MP::Transport (); 23use AnyEvent::MP::Transport ();
22 24
23use base Exporter::;
24
25sub new { 25sub new {
26 my ($class, $noderef) = @_; 26 my ($self, $id) = @_;
27 27
28 bless { noderef => $noderef }, $class 28 $self = bless { id => $id }, $self;
29}
30 29
30 $self->init;
31 $self->transport_reset;
32
33 $self
34}
35
36sub init {
37 #
38}
39
40sub send {
41 &{ shift->{send} }
42}
43
44# nodes reachable via the network
31package AnyEvent::MP::Node::Direct; 45package AnyEvent::MP::Node::External;
32 46
33use base "AnyEvent::MP::Node"; 47use base "AnyEvent::MP::Node";
34 48
35sub send { 49# called at init time, mostly sets {send}
50sub transport_reset {
36 my ($self, $msg) = @_; 51 my ($self) = @_;
37 52
38 if ($self->{transport}) { 53 delete $self->{transport};
39 $self->{transport}->send ($msg); 54
40 } elsif ($self->{queue}) { 55 Scalar::Util::weaken $self;
56
57 $self->{send} = sub {
41 push @{ $self->{queue} }, $msg; 58 push @{$self->{queue}}, shift;
42 } else {
43 $self->{queue} = [$msg];
44 $self->connect; 59 $self->connect;
60 };
61}
62
63# called only after successful handshake
64sub transport_error {
65 my ($self, @reason) = @_;
66
67 my $no_transport = !$self->{transport};
68
69 delete $self->{connect_w};
70 delete $self->{connect_to};
71
72 delete $self->{queue};
73 $self->transport_reset;
74
75 if (my $mon = delete $self->{lmon}) {
76 $_->(@reason) for map @$_, values %$mon;
77 }
78
79 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 0, @reason)
80 unless $no_transport;
81}
82
83# called after handshake was successful
84sub transport_connect {
85 my ($self, $transport) = @_;
86
87 delete $self->{trial};
88
89 $self->transport_error (transport_error => "switched connections")
90 if $self->{transport};
91
92 delete $self->{connect_w};
93 delete $self->{connect_to};
94
95 $self->{transport} = $transport;
96
97 my $transport_send = $transport->can ("send");
98
99 $self->{send} = sub {
100 $transport_send->($transport, $_[0]);
101 };
102
103 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1);
104
105 $transport->send ($_)
106 for @{ delete $self->{queue} || [] };
107}
108
109sub connect {
110 my ($self, @addresses) = @_;
111
112 return if $self->{transport};
113
114 Scalar::Util::weaken $self;
115
116 $self->{connect_to} ||= AE::timer
117 $AnyEvent::MP::Config::CFG{monitor_timeout} || $AnyEvent::MP::Kernel::MONITOR_TIMEOUT,
118 0,
119 sub {
120 $self->transport_error (transport_error => $self->{id}, "unable to connect");
121 };
122
123 return unless @addresses;
124
125 $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} with [@addresses]");
126
127 unless ($self->{connect_w}) {
128 my @endpoints;
129
130 $self->{connect_w} = AE::timer
131 rand,
132 $AnyEvent::MP::Config::CFG{connect_interval} || $AnyEvent::MP::Kernel::CONNECT_INTERVAL,
133 sub {
134 @endpoints = @addresses
135 unless @endpoints;
136
137 my $endpoint = shift @endpoints;
138
139 $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} at $endpoint");
140
141 $self->{trial}{$endpoint} ||= do {
142 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint
143 or return $AnyEvent::MP::Kernel::WARN->(1, "$self->{id}: not a resolved node reference.");
144
145 AnyEvent::MP::Transport::mp_connect
146 $host, $port,
147 sub { delete $self->{trial}{$endpoint} },
148 };
149 }
150 ;
45 } 151 }
46} 152}
47 153
48sub kill { 154sub kill {
49 my ($self, $port, @reason) = @_; 155 my ($self, $port, @reason) = @_;
… …
55 my ($self, $portid, $cb) = @_; 161 my ($self, $portid, $cb) = @_;
56 162
57 my $list = $self->{lmon}{$portid} ||= []; 163 my $list = $self->{lmon}{$portid} ||= [];
58 164
59 $self->send (["", mon1 => $portid]) 165 $self->send (["", mon1 => $portid])
60 unless @$list; 166 unless @$list || !length $portid;
61 167
62 push @$list, $cb; 168 push @$list, $cb;
63} 169}
64 170
65sub unmonitor { 171sub unmonitor {
… …
74 $self->send (["", mon0 => $portid]); 180 $self->send (["", mon0 => $portid]);
75 delete $self->{monitor}{$portid}; 181 delete $self->{monitor}{$portid};
76 } 182 }
77} 183}
78 184
79sub set_transport { 185# used for direct slave connections as well
80 my ($self, $transport) = @_; 186package AnyEvent::MP::Node::Direct;
81 187
82 $self->clr_transport 188use base "AnyEvent::MP::Node::External";
83 if $self->{transport};
84 189
85 delete $self->{trial}; 190package AnyEvent::MP::Node::Self;
86 delete $self->{retry};
87 delete $self->{next_connect};
88 191
89 $self->{transport} = $transport; 192use base "AnyEvent::MP::Node";
90
91 $transport->send ($_)
92 for @{ delete $self->{queue} || [] };
93}
94
95sub fail {
96 my ($self, @reason) = @_;
97
98 delete $self->{queue};
99
100 if (my $mon = delete $self->{lmon}) {
101 $_->(@reason) for map @$_, values %$mon;
102 }
103}
104
105sub clr_transport {
106 my ($self, @reason) = @_;
107
108 delete $self->{transport};
109 $self->connect;
110}
111 193
112sub connect { 194sub connect {
195 # we are trivially connected
196}
197
198sub transport_reset {
113 my ($self) = @_; 199 my ($self) = @_;
114 200
115 Scalar::Util::weaken $self; 201 Scalar::Util::weaken $self;
116 202
117 $self->{retry} ||= [split /,/, $self->{noderef}]; 203 $self->{send} = sub {
118 204 local $AnyEvent::MP::Kernel::SRCNODE = $self;
119 my $endpoint = shift @{ $self->{retry} }; 205 AnyEvent::MP::Kernel::_inject (@{ $_[0] });
120
121 if (defined $endpoint) {
122 $self->{trial}{$endpoint} ||= do {
123 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint
124 or return $AnyEvent::MP::Base::WARN->("$self->{noderef}: not a resolved node reference.");
125
126 my ($w, $g);
127
128 $w = AE::timer $AnyEvent::MP::Base::CONNECT_TIMEOUT, 0, sub {
129 delete $self->{trial}{$endpoint};
130 };
131 $g = AnyEvent::MP::Transport::mp_connect
132 $host, $port,
133 sub {
134 delete $self->{trial}{$endpoint}
135 unless @_;
136 $g = shift;
137 };
138 ;
139
140 [$w, \$g]
141 };
142 } else {
143 $self->fail (transport_error => $self->{noderef}, "unable to connect");
144 }
145
146 $self->{next_connect} = AE::timer $AnyEvent::MP::Base::CONNECT_INTERVAL, 0, sub {
147 delete $self->{retry};
148 $self->connect;
149 }; 206 };
150} 207}
151 208
152package AnyEvent::MP::Node::Slave; 209sub transport_connect {
153
154use base "AnyEvent::MP::Node::Direct";
155
156sub connect {
157 my ($self) = @_; 210 my ($self, $tp) = @_;
158 211
159 $self->fail (transport_error => $self->{noderef}, "unable to connect to slave node"); 212 $AnyEvent::MP::Kernel::WARN->(9, "I refuse to talk to myself ($tp->{peerhost}:$tp->{peerport})");
160}
161
162package AnyEvent::MP::Node::Self;
163
164use base "AnyEvent::MP::Node";
165
166sub set_transport {
167 Carp::confess "FATAL error, set_transport was called on local node";
168}
169
170sub send {
171 local $AnyEvent::MP::Base::SRCNODE = $_[0];
172 AnyEvent::MP::Base::_inject (@{ $_[1] });
173} 213}
174 214
175sub kill { 215sub kill {
176 my ($self, $port, @reason) = @_; 216 my ($self, $port, @reason) = @_;
177 217
178 delete $AnyEvent::MP::Base::PORT{$port}; 218 delete $AnyEvent::MP::Kernel::PORT{$port};
179 delete $AnyEvent::MP::Base::PORT_DATA{$port}; 219 delete $AnyEvent::MP::Kernel::PORT_DATA{$port};
180 220
181 my $mon = delete $AnyEvent::MP::Base::LMON{$port} 221 my $mon = delete $AnyEvent::MP::Kernel::LMON{$port}
182 or !@reason 222 or !@reason
183 or $AnyEvent::MP::Base::WARN->("unmonitored local port $port died with reason: @reason"); 223 or $AnyEvent::MP::Kernel::WARN->(2, "unmonitored local port $port died with reason: @reason");
184 224
185 $_->(@reason) for values %$mon; 225 $_->(@reason) for values %$mon;
186} 226}
187 227
188sub monitor { 228sub monitor {
189 my ($self, $portid, $cb) = @_; 229 my ($self, $portid, $cb) = @_;
190 230
191 return $cb->(no_such_port => "cannot monitor nonexistent port") 231 return $cb->(no_such_port => "cannot monitor nonexistent port")
192 unless exists $AnyEvent::MP::Base::PORT{$portid}; 232 unless exists $AnyEvent::MP::Kernel::PORT{$portid};
193 233
194 $AnyEvent::MP::Base::LMON{$portid}{$cb+0} = $cb; 234 $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0} = $cb;
195} 235}
196 236
197sub unmonitor { 237sub unmonitor {
198 my ($self, $portid, $cb) = @_; 238 my ($self, $portid, $cb) = @_;
199 239
200 delete $AnyEvent::MP::Base::LMON{$portid}{$cb+0}; 240 delete $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0};
201} 241}
202 242
203=head1 SEE ALSO 243=head1 SEE ALSO
204 244
205L<AnyEvent>. 245L<AnyEvent::MP>.
206 246
207=head1 AUTHOR 247=head1 AUTHOR
208 248
209 Marc Lehmann <schmorp@schmorp.de> 249 Marc Lehmann <schmorp@schmorp.de>
210 http://home.schmorp.de/ 250 http://home.schmorp.de/

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