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Comparing AnyEvent-MP/MP/Node.pm (file contents):
Revision 1.17 by root, Mon Aug 10 01:37:19 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
… …
19use AnyEvent::Socket (); 21use AnyEvent::Socket ();
20 22
21use AnyEvent::MP::Transport (); 23use AnyEvent::MP::Transport ();
22 24
23sub new { 25sub new {
24 my ($class, $noderef) = @_; 26 my ($self, $id) = @_;
25 27
26 bless { noderef => $noderef }, $class 28 $self = bless { id => $id }, $self;
27}
28 29
30 $self->init;
31 $self->transport_reset;
32
33 $self
34}
35
36sub init {
37 #
38}
39
40sub send {
41 &{ shift->{send} }
42}
43
44# nodes reachable via the network
29package AnyEvent::MP::Node::Direct; 45package AnyEvent::MP::Node::External;
30 46
31use base "AnyEvent::MP::Node"; 47use base "AnyEvent::MP::Node";
32 48
33sub send { 49# called at init time, mostly sets {send}
50sub transport_reset {
34 my ($self, $msg) = @_; 51 my ($self) = @_;
35 52
36 if ($self->{transport}) { 53 delete $self->{transport};
37 $self->{transport}->send ($msg); 54
38 } elsif ($self->{queue}) { 55 Scalar::Util::weaken $self;
56
57 $self->{send} = sub {
39 push @{ $self->{queue} }, $msg; 58 push @{$self->{queue}}, shift;
40 } else {
41 $self->{queue} = [$msg];
42 $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 ;
43 } 151 }
44} 152}
45 153
46sub kill { 154sub kill {
47 my ($self, $port, @reason) = @_; 155 my ($self, $port, @reason) = @_;
… …
53 my ($self, $portid, $cb) = @_; 161 my ($self, $portid, $cb) = @_;
54 162
55 my $list = $self->{lmon}{$portid} ||= []; 163 my $list = $self->{lmon}{$portid} ||= [];
56 164
57 $self->send (["", mon1 => $portid]) 165 $self->send (["", mon1 => $portid])
58 unless @$list; 166 unless @$list || !length $portid;
59 167
60 push @$list, $cb; 168 push @$list, $cb;
61} 169}
62 170
63sub unmonitor { 171sub unmonitor {
… …
72 $self->send (["", mon0 => $portid]); 180 $self->send (["", mon0 => $portid]);
73 delete $self->{monitor}{$portid}; 181 delete $self->{monitor}{$portid};
74 } 182 }
75} 183}
76 184
77sub set_transport { 185# used for direct slave connections as well
78 my ($self, $transport) = @_; 186package AnyEvent::MP::Node::Direct;
79 187
80 $self->clr_transport 188use base "AnyEvent::MP::Node::External";
81 if $self->{transport};
82 189
83 delete $self->{trial}; 190package AnyEvent::MP::Node::Self;
84 delete $self->{retry};
85 delete $self->{next_connect};
86 191
87 $self->{transport} = $transport; 192use base "AnyEvent::MP::Node";
88
89 $transport->send ($_)
90 for @{ delete $self->{queue} || [] };
91}
92
93sub fail {
94 my ($self, @reason) = @_;
95
96 delete $self->{queue};
97
98 if (my $mon = delete $self->{lmon}) {
99 $_->(@reason) for map @$_, values %$mon;
100 }
101}
102
103sub clr_transport {
104 my ($self, @reason) = @_;
105
106 delete $self->{transport};
107 $self->connect;
108}
109 193
110sub connect { 194sub connect {
195 # we are trivially connected
196}
197
198sub transport_reset {
111 my ($self) = @_; 199 my ($self) = @_;
112 200
113 Scalar::Util::weaken $self; 201 Scalar::Util::weaken $self;
114 202
115 $self->{retry} ||= [split /,/, $self->{noderef}]; 203 $self->{send} = sub {
116 204 local $AnyEvent::MP::Kernel::SRCNODE = $self;
117 my $endpoint = shift @{ $self->{retry} }; 205 AnyEvent::MP::Kernel::_inject (@{ $_[0] });
118
119 if (defined $endpoint) {
120 $self->{trial}{$endpoint} ||= do {
121 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint
122 or return $AnyEvent::MP::Base::WARN->("$self->{noderef}: not a resolved node reference.");
123
124 my ($w, $g);
125
126 $w = AE::timer $AnyEvent::MP::Base::CONNECT_TIMEOUT, 0, sub {
127 delete $self->{trial}{$endpoint};
128 };
129 $g = AnyEvent::MP::Transport::mp_connect
130 $host, $port,
131 sub {
132 delete $self->{trial}{$endpoint}
133 unless @_;
134 $g = shift;
135 };
136 ;
137
138 [$w, \$g]
139 };
140 } else {
141 $self->fail (transport_error => $self->{noderef}, "unable to connect");
142 }
143
144 $self->{next_connect} = AE::timer $AnyEvent::MP::Base::CONNECT_INTERVAL, 0, sub {
145 delete $self->{retry};
146 $self->connect;
147 }; 206 };
148} 207}
149 208
150package AnyEvent::MP::Node::Slave; 209sub transport_connect {
151
152use base "AnyEvent::MP::Node::Direct";
153
154sub connect {
155 my ($self) = @_; 210 my ($self, $tp) = @_;
156 211
157 $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})");
158}
159
160package AnyEvent::MP::Node::Self;
161
162use base "AnyEvent::MP::Node";
163
164sub set_transport {
165 Carp::confess "FATAL error, set_transport was called on local node";
166}
167
168sub send {
169 local $AnyEvent::MP::Base::SRCNODE = $_[0];
170 AnyEvent::MP::Base::_inject (@{ $_[1] });
171} 213}
172 214
173sub kill { 215sub kill {
174 my ($self, $port, @reason) = @_; 216 my ($self, $port, @reason) = @_;
175 217
176 delete $AnyEvent::MP::Base::PORT{$port}; 218 delete $AnyEvent::MP::Kernel::PORT{$port};
177 delete $AnyEvent::MP::Base::PORT_DATA{$port}; 219 delete $AnyEvent::MP::Kernel::PORT_DATA{$port};
178 220
179 my $mon = delete $AnyEvent::MP::Base::LMON{$port} 221 my $mon = delete $AnyEvent::MP::Kernel::LMON{$port}
180 or !@reason 222 or !@reason
181 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");
182 224
183 $_->(@reason) for values %$mon; 225 $_->(@reason) for values %$mon;
184} 226}
185 227
186sub monitor { 228sub monitor {
187 my ($self, $portid, $cb) = @_; 229 my ($self, $portid, $cb) = @_;
188 230
189 return $cb->(no_such_port => "cannot monitor nonexistent port") 231 return $cb->(no_such_port => "cannot monitor nonexistent port")
190 unless exists $AnyEvent::MP::Base::PORT{$portid}; 232 unless exists $AnyEvent::MP::Kernel::PORT{$portid};
191 233
192 $AnyEvent::MP::Base::LMON{$portid}{$cb+0} = $cb; 234 $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0} = $cb;
193} 235}
194 236
195sub unmonitor { 237sub unmonitor {
196 my ($self, $portid, $cb) = @_; 238 my ($self, $portid, $cb) = @_;
197 239
198 delete $AnyEvent::MP::Base::LMON{$portid}{$cb+0}; 240 delete $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0};
199} 241}
200 242
201=head1 SEE ALSO 243=head1 SEE ALSO
202 244
203L<AnyEvent::MP>. 245L<AnyEvent::MP>.

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