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Comparing AnyEvent-MP/MP/Node.pm (file contents):
Revision 1.6 by root, Mon Aug 3 21:35:03 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::; 25sub new {
26 my ($self, $id) = @_;
24 27
25our $VERSION = '0.0'; 28 $self = bless { id => $id }, $self;
26 29
27our $DEFAULT_PORT = "4040"; 30 $self->init;
31 $self->transport_reset;
28 32
29sub normalise_noderef($) { 33 $self
34}
35
36sub init {
37 #
38}
39
40sub send {
41 &{ shift->{send} }
42}
43
44# nodes reachable via the network
45package AnyEvent::MP::Node::External;
46
47use base "AnyEvent::MP::Node";
48
49# called at init time, mostly sets {send}
50sub transport_reset {
30 my ($noderef) = @_; 51 my ($self) = @_;
31 52
32 my $cv = AE::cv; 53 delete $self->{transport};
33 my @res;
34 54
35 $cv->begin (sub { 55 Scalar::Util::weaken $self;
36 my %seen; 56
37 my @refs; 57 $self->{send} = sub {
38 for (sort { $a->[0] <=> $b->[0] } @res) { 58 push @{$self->{queue}}, shift;
39 push @refs, $_->[1] unless $seen{$_->[1]}++ 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");
40 } 121 };
41 shift->send (join ",", @refs);
42 });
43 122
44 $noderef = $DEFAULT_PORT unless length $noderef; 123 return unless @addresses;
45 124
46 my $idx; 125 $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} with [@addresses]");
47 for my $t (split /,/, $noderef) {
48 my $pri = ++$idx;
49
50 #TODO: this should be outside normalise_noderef and in become_public
51 if ($t =~ /^\d*$/) {
52 require POSIX;
53 my $nodename = (POSIX::uname ())[1];
54 126
55 $cv->begin; 127 unless ($self->{connect_w}) {
56 AnyEvent::Socket::resolve_sockaddr $nodename, $t || "aemp=$DEFAULT_PORT", "tcp", 0, undef, sub { 128 my @endpoints;
57 for (@_) { 129
58 my ($service, $host) = AnyEvent::Socket::unpack_sockaddr $_->[3]; 130 $self->{connect_w} = AE::timer
59 push @res, [ 131 rand,
60 $pri += 1e-5, 132 $AnyEvent::MP::Config::CFG{connect_interval} || $AnyEvent::MP::Kernel::CONNECT_INTERVAL,
61 AnyEvent::Socket::format_hostport AnyEvent::Socket::format_address $host, $service 133 sub {
62 ]; 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} },
63 } 148 };
64 $cv->end;
65 };
66
67# my (undef, undef, undef, undef, @ipv4) = gethostbyname $nodename;
68#
69# for (@ipv4) {
70# push @res, [
71# $pri,
72# AnyEvent::Socket::format_hostport AnyEvent::Socket::format_address $_, $t || $DEFAULT_PORT,
73# ];
74# }
75 } else {
76 my ($host, $port) = AnyEvent::Socket::parse_hostport $t, "aemp=$DEFAULT_PORT"
77 or Carp::croak "$t: unparsable transport descriptor";
78
79 $cv->begin;
80 AnyEvent::Socket::resolve_sockaddr $host, $port, "tcp", 0, undef, sub {
81 for (@_) {
82 my ($service, $host) = AnyEvent::Socket::unpack_sockaddr $_->[3];
83 push @res, [
84 $pri += 1e-5,
85 AnyEvent::Socket::format_hostport AnyEvent::Socket::format_address $host, $service
86 ];
87 }
88 $cv->end;
89 } 149 }
90 } 150 ;
91 } 151 }
92
93 $cv->end;
94
95 $cv
96} 152}
97 153
98sub new { 154sub kill {
99 my ($class, $noderef) = @_;
100
101 bless { noderef => $noderef }, $class
102}
103
104package AnyEvent::MP::Node::Direct;
105
106use base "AnyEvent::MP::Node";
107
108sub send {
109 my ($self, $msg) = @_; 155 my ($self, $port, @reason) = @_;
110 156
111 if ($self->{transport}) { 157 $self->send (["", kil => $port, @reason]);
112 $self->{transport}->send ($msg);
113 } elsif ($self->{queue}) {
114 push @{ $self->{queue} }, $msg;
115 } else {
116 $self->{queue} = [$msg];
117 $self->connect;
118 }
119} 158}
120 159
121sub monitor { 160sub monitor {
122 my ($self, $portid, $cb) = @_; 161 my ($self, $portid, $cb) = @_;
123 162
124 return $cb->()
125 if $self->{failed};
126
127 my $list = $self->{lmon}{$portid} ||= []; 163 my $list = $self->{lmon}{$portid} ||= [];
128 164
129 $self->send (["", mon1 => $portid]) 165 $self->send (["", mon1 => $portid])
130 unless @$list; 166 unless @$list || !length $portid;
131 167
132 push @$list, $cb; 168 push @$list, $cb;
133} 169}
134 170
135sub unmonitor { 171sub unmonitor {
… …
144 $self->send (["", mon0 => $portid]); 180 $self->send (["", mon0 => $portid]);
145 delete $self->{monitor}{$portid}; 181 delete $self->{monitor}{$portid};
146 } 182 }
147} 183}
148 184
185# used for direct slave connections as well
186package AnyEvent::MP::Node::Direct;
187
188use base "AnyEvent::MP::Node::External";
189
190package AnyEvent::MP::Node::Self;
191
192use base "AnyEvent::MP::Node";
193
194sub connect {
195 # we are trivially connected
196}
197
149sub set_transport { 198sub transport_reset {
150 my ($self, $transport) = @_;
151
152 $self->clr_transport
153 if $self->{transport};
154
155 delete $self->{trial};
156 delete $self->{next_connect};
157 delete $self->{failed};
158
159 if (
160 exists $self->{remote_uniq}
161 && $self->{remote_uniq} ne $transport->{remote_uniq}
162 ) {
163 # uniq changed, drop queue
164 delete $self->{queue};
165 #TODO: "DOWN"
166 }
167
168 $self->{remote_uniq} = $transport->{remote_uniq};
169 $self->{transport} = $transport;
170
171 $transport->send ($_)
172 for @{ delete $self->{queue} || [] };
173}
174
175sub clr_transport {
176 my ($self) = @_; 199 my ($self) = @_;
177 200
178 delete $self->{transport};
179 $self->{failed} = 1;
180
181 if (my $mon = delete $self->{monitor}) {
182 $_->() for map @$_, values %$mon;
183 }
184
185 $self->connect;
186}
187
188sub connect {
189 my ($self) = @_;
190
191 Scalar::Util::weaken $self; 201 Scalar::Util::weaken $self;
192 202
193 unless (exists $self->{n_noderef}) { 203 $self->{send} = sub {
194 return if $self->{n_noderef_}++;
195 (AnyEvent::MP::Node::normalise_noderef ($self->{noderef}))->cb (sub {
196 $self or return;
197 delete $self->{n_noderef_};
198 my $noderef = shift->recv;
199
200 $self->{n_noderef} = $noderef;
201
202 $AnyEvent::MP::Base::NODE{$_} = $self 204 local $AnyEvent::MP::Kernel::SRCNODE = $self;
203 for split /,/, $noderef; 205 AnyEvent::MP::Kernel::_inject (@{ $_[0] });
204
205 $self->connect;
206 });
207 return;
208 }
209
210 $self->{retry} ||= [split /,/, $self->{n_noderef}];
211
212 my $endpoint = shift @{ $self->{retry} };
213
214 if (defined $endpoint) {
215 $self->{trial}{$endpoint} ||= do {
216 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint
217 or return;
218
219 my ($w, $g);
220
221 $w = AE::timer $AnyEvent::MP::Base::CONNECT_TIMEOUT, 0, sub {
222 delete $self->{trial}{$endpoint};
223 };
224 $g = AnyEvent::MP::Transport::mp_connect
225 $host, $port,
226 sub {
227 delete $self->{trial}{$endpoint}
228 unless @_;
229 $g = shift;
230 };
231 ;
232
233 [$w, \$g]
234 };
235 } else {
236 delete $self->{retry};
237 }
238
239 $self->{next_connect} = AE::timer $AnyEvent::MP::Base::CONNECT_INTERVAL, 0, sub {
240 $self->connect;
241 }; 206 };
242} 207}
243 208
244package AnyEvent::MP::Node::Self; 209sub transport_connect {
210 my ($self, $tp) = @_;
245 211
246use base "AnyEvent::MP::Node"; 212 $AnyEvent::MP::Kernel::WARN->(9, "I refuse to talk to myself ($tp->{peerhost}:$tp->{peerport})");
247
248sub set_transport {
249 die "FATAL error, set_transport was called";
250} 213}
251 214
252sub send { 215sub kill {
253 local $AnyEvent::MP::Base::SRCNODE = $_[0]; 216 my ($self, $port, @reason) = @_;
254 AnyEvent::MP::Base::_inject (@{ $_[1] }); 217
218 delete $AnyEvent::MP::Kernel::PORT{$port};
219 delete $AnyEvent::MP::Kernel::PORT_DATA{$port};
220
221 my $mon = delete $AnyEvent::MP::Kernel::LMON{$port}
222 or !@reason
223 or $AnyEvent::MP::Kernel::WARN->(2, "unmonitored local port $port died with reason: @reason");
224
225 $_->(@reason) for values %$mon;
255} 226}
256 227
257sub monitor { 228sub monitor {
258 my ($self, $portid, $cb) = @_; 229 my ($self, $portid, $cb) = @_;
259 230
260 return $cb->() 231 return $cb->(no_such_port => "cannot monitor nonexistent port")
261 unless exists $AnyEvent::MP::Base::PORT{$portid}; 232 unless exists $AnyEvent::MP::Kernel::PORT{$portid};
262 233
263 $AnyEvent::MP::Base::LMON{$portid}{$cb+0} = $cb; 234 $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0} = $cb;
264} 235}
265 236
266sub unmonitor { 237sub unmonitor {
267 my ($self, $portid, $cb) = @_; 238 my ($self, $portid, $cb) = @_;
268 239
269 delete $AnyEvent::MP::Base::LMON{$portid}{$cb+0}; 240 delete $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0};
270} 241}
271 242
272=head1 SEE ALSO 243=head1 SEE ALSO
273 244
274L<AnyEvent>. 245L<AnyEvent::MP>.
275 246
276=head1 AUTHOR 247=head1 AUTHOR
277 248
278 Marc Lehmann <schmorp@schmorp.de> 249 Marc Lehmann <schmorp@schmorp.de>
279 http://home.schmorp.de/ 250 http://home.schmorp.de/

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