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Comparing AnyEvent-MP/MP/Node.pm (file contents):
Revision 1.7 by root, Tue Aug 4 14:10:51 2009 UTC vs.
Revision 1.43 by root, Thu Oct 1 16:11:05 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;
40 }
41 shift->send (join ",", @refs);
42 }); 60 };
61}
43 62
44 $noderef = $DEFAULT_PORT unless length $noderef; 63# called each time we fail to establish a connection,
64# or the existing connection failed
65sub transport_error {
66 my ($self, @reason) = @_;
45 67
46 my $idx; 68 my $no_transport = !$self->{transport};
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 69
55 $cv->begin; 70 delete $self->{connect_w};
56 AnyEvent::Socket::resolve_sockaddr $nodename, $t || "aemp=$DEFAULT_PORT", "tcp", 0, undef, sub { 71 delete $self->{connect_to};
57 for (@_) {
58 my ($service, $host) = AnyEvent::Socket::unpack_sockaddr $_->[3];
59 push @res, [
60 $pri += 1e-5,
61 AnyEvent::Socket::format_hostport AnyEvent::Socket::format_address $host, $service
62 ];
63 }
64 $cv->end;
65 };
66 72
67# my (undef, undef, undef, undef, @ipv4) = gethostbyname $nodename; 73 delete $self->{queue};
68# 74 $self->transport_reset;
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 75
79 $cv->begin; 76 if (my $mon = delete $self->{lmon}) {
80 AnyEvent::Socket::resolve_sockaddr $host, $port, "tcp", 0, undef, sub { 77 $_->(@reason) for map @$_, values %$mon;
81 for (@_) {
82 my ($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 }
90 }
91 } 78 }
92 79
93 $cv->end; 80 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 0, @reason)
81 unless $no_transport;
94 82
95 $cv 83 # if we are here and are idle, we nuke ourselves
84 delete $AnyEvent::MP::Kernel::NODE{$self->{id}}
85 unless $self->{transport} || $self->{connect_to};
96} 86}
97 87
98sub new { 88# called after handshake was successful
99 my ($class, $noderef) = @_; 89sub transport_connect {
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, $msg) = @_; 90 my ($self, $transport) = @_;
110 91
92 delete $self->{trial};
93
94 $self->transport_error (transport_error => "switched connections")
111 if ($self->{transport}) { 95 if $self->{transport};
112 $self->{transport}->send ($msg); 96
113 } elsif ($self->{queue}) { 97 delete $self->{connect_addr};
114 push @{ $self->{queue} }, $msg;
115 } else {
116 $self->{queue} = [$msg];
117 $self->connect; 98 delete $self->{connect_w};
99 delete $self->{connect_to};
100
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);
110
111 $transport->send ($_)
112 for @{ delete $self->{queue} || [] };
113}
114
115sub connect {
116 my ($self, @addresses) = @_;
117
118 return if $self->{transport};
119
120 Scalar::Util::weaken $self;
121
122 my $monitor = $AnyEvent::MP::Kernel::CONFIG->{monitor_timeout};
123
124 $self->{connect_to} ||= AE::timer $monitor, 0, sub {
125 $self->transport_error (transport_error => $self->{id}, "unable to connect");
126 };
127
128 return unless @addresses;
129
130 if ($self->{connect_w}) {
131 # sometimes we get told about new addresses after we started to connect
132 unshift @{$self->{connect_addr}}, @addresses;
133 return;
118 } 134 }
135
136 $self->{connect_addr} = \@addresses; # a bit weird, but efficient
137
138 $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} with [@addresses]");
139
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
157 $self->{trial}{$endpoint} ||= do {
158 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint
159 or return $AnyEvent::MP::Kernel::WARN->(1, "$self->{id}: not a resolved node reference.");
160
161 AnyEvent::MP::Transport::mp_connect
162 $host, $port,
163 sub { delete $self->{trial}{$endpoint} },
164 };
165 };
119} 166}
120 167
121sub kill { 168sub kill {
122 my ($self, $port, @reason) = @_; 169 my ($self, $port, @reason) = @_;
123 170
124 $self->send (["", kil => $port, @reason]); 171 $self->send (["", kil => $port, @reason]);
125
126# delete $AnyEvent::MP::Base::PORT{$port};
127
128# my $mon = delete $AnyEvent::MP::Base::LMON{$port}
129# or return;
130
131# $_->(@reason) for values %$mon;
132} 172}
133 173
134sub monitor { 174sub monitor {
135 my ($self, $portid, $cb) = @_; 175 my ($self, $portid, $cb) = @_;
136 176
137 return $cb->()
138 if $self->{failed};
139
140 my $list = $self->{lmon}{$portid} ||= []; 177 my $list = $self->{lmon}{$portid} ||= [];
141 178
142 $self->send (["", mon1 => $portid]) 179 $self->send (["", mon1 => $portid])
143 unless @$list; 180 unless @$list || !length $portid;
144 181
145 push @$list, $cb; 182 push @$list, $cb;
146} 183}
147 184
148sub unmonitor { 185sub unmonitor {
… …
157 $self->send (["", mon0 => $portid]); 194 $self->send (["", mon0 => $portid]);
158 delete $self->{monitor}{$portid}; 195 delete $self->{monitor}{$portid};
159 } 196 }
160} 197}
161 198
199# used for direct slave connections as well
200package AnyEvent::MP::Node::Direct;
201
202use base "AnyEvent::MP::Node::External";
203
204package AnyEvent::MP::Node::Self;
205
206use base "AnyEvent::MP::Node";
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 $DELAY = -50;
223}
224
162sub set_transport { 225sub transport_reset {
163 my ($self, $transport) = @_;
164
165 $self->clr_transport
166 if $self->{transport};
167
168 delete $self->{trial};
169 delete $self->{next_connect};
170 delete $self->{failed};
171
172 if (
173 exists $self->{remote_uniq}
174 && $self->{remote_uniq} ne $transport->{remote_uniq}
175 ) {
176 # uniq changed, drop queue
177 delete $self->{queue};
178 #TODO: "DOWN"
179 }
180
181 $self->{remote_uniq} = $transport->{remote_uniq};
182 $self->{transport} = $transport;
183
184 $transport->send ($_)
185 for @{ delete $self->{queue} || [] };
186}
187
188sub clr_transport {
189 my ($self) = @_; 226 my ($self) = @_;
190 227
191 delete $self->{transport};
192 $self->{failed} = 1;
193
194 if (my $mon = delete $self->{monitor}) {
195 $_->() for map @$_, values %$mon;
196 }
197
198 $self->connect;
199}
200
201sub connect {
202 my ($self) = @_;
203
204 Scalar::Util::weaken $self; 228 Scalar::Util::weaken $self;
205 229
206 unless (exists $self->{n_noderef}) { 230 $self->{send} = sub {
207 return if $self->{n_noderef_}++; 231 if ($DELAY++ >= 0) {
208 (AnyEvent::MP::Node::normalise_noderef ($self->{noderef}))->cb (sub { 232 my $msg = $_[0];
209 $self or return; 233 push @DELAY, sub { AnyEvent::MP::Kernel::_inject (@$msg) };
210 delete $self->{n_noderef_}; 234 $DELAY_W ||= AE::timer 0, 0, \&_send_delayed;
211 my $noderef = shift->recv;
212
213 $self->{n_noderef} = $noderef;
214
215 $AnyEvent::MP::Base::NODE{$_} = $self
216 for split /,/, $noderef;
217
218 $self->connect;
219 });
220 return; 235 return;
221 }
222
223 $self->{retry} ||= [split /,/, $self->{n_noderef}];
224
225 my $endpoint = shift @{ $self->{retry} };
226
227 if (defined $endpoint) {
228 $self->{trial}{$endpoint} ||= do {
229 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint
230 or return;
231
232 my ($w, $g);
233
234 $w = AE::timer $AnyEvent::MP::Base::CONNECT_TIMEOUT, 0, sub {
235 delete $self->{trial}{$endpoint};
236 };
237 $g = AnyEvent::MP::Transport::mp_connect
238 $host, $port,
239 sub {
240 delete $self->{trial}{$endpoint}
241 unless @_;
242 $g = shift;
243 };
244 ;
245
246 [$w, \$g]
247 }; 236 }
248 } else { 237
249 delete $self->{retry}; 238 local $AnyEvent::MP::Kernel::SRCNODE = $self;
239 AnyEvent::MP::Kernel::_inject (@{ $_[0] });
250 } 240 };
251
252 $self->{next_connect} = AE::timer $AnyEvent::MP::Base::CONNECT_INTERVAL, 0, sub {
253 $self->connect;
254 };
255} 241}
256 242
257package AnyEvent::MP::Node::Self; 243sub transport_connect {
244 my ($self, $tp) = @_;
258 245
259use base "AnyEvent::MP::Node"; 246 $AnyEvent::MP::Kernel::WARN->(9, "I refuse to talk to myself ($tp->{peerhost}:$tp->{peerport})");
260
261sub set_transport {
262 die "FATAL error, set_transport was called";
263}
264
265sub send {
266 local $AnyEvent::MP::Base::SRCNODE = $_[0];
267 AnyEvent::MP::Base::_inject (@{ $_[1] });
268} 247}
269 248
270sub kill { 249sub kill {
271 my ($self, $port, @reason) = @_; 250 my ($self, $port, @reason) = @_;
272 251
252 my $delay_cb = sub {
273 delete $AnyEvent::MP::Base::PORT{$port}; 253 delete $AnyEvent::MP::Kernel::PORT{$port}
254 or return; # killing nonexistent ports is O.K.
255 delete $AnyEvent::MP::Kernel::PORT_DATA{$port};
274 256
275 my $mon = delete $AnyEvent::MP::Base::LMON{$port} 257 my $mon = delete $AnyEvent::MP::Kernel::LMON{$port}
276 or return; 258 or !@reason
259 or $AnyEvent::MP::Kernel::WARN->(8, "unmonitored local port $port died with reason: @reason");
277 260
278 $_->(@reason) for values %$mon; 261 $_->(@reason) for values %$mon;
262 };
263
264 $DELAY_W ? push @DELAY, $delay_cb : &$delay_cb;
279} 265}
280 266
281sub monitor { 267sub monitor {
282 my ($self, $portid, $cb) = @_; 268 my ($self, $portid, $cb) = @_;
283 269
284 return $cb->() 270 my $delay_cb = sub {
271 return $cb->(no_such_port => "cannot monitor nonexistent port", "$self->{id}#$portid")
285 unless exists $AnyEvent::MP::Base::PORT{$portid}; 272 unless exists $AnyEvent::MP::Kernel::PORT{$portid};
286 273
287 $AnyEvent::MP::Base::LMON{$portid}{$cb+0} = $cb; 274 $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0} = $cb;
275 };
276
277 $DELAY_W ? push @DELAY, $delay_cb : &$delay_cb;
288} 278}
289 279
290sub unmonitor { 280sub unmonitor {
291 my ($self, $portid, $cb) = @_; 281 my ($self, $portid, $cb) = @_;
292 282
283 my $delay_cb = sub {
293 delete $AnyEvent::MP::Base::LMON{$portid}{$cb+0}; 284 delete $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0};
285 };
286
287 $DELAY_W ? push @DELAY, $delay_cb : &$delay_cb;
294} 288}
295 289
296=head1 SEE ALSO 290=head1 SEE ALSO
297 291
298L<AnyEvent>. 292L<AnyEvent::MP>.
299 293
300=head1 AUTHOR 294=head1 AUTHOR
301 295
302 Marc Lehmann <schmorp@schmorp.de> 296 Marc Lehmann <schmorp@schmorp.de>
303 http://home.schmorp.de/ 297 http://home.schmorp.de/

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