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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 1.22 by root, Thu Aug 13 22:50:47 2009 UTC

… …
18use AnyEvent::Util (); 18use AnyEvent::Util ();
19use AnyEvent::Socket (); 19use AnyEvent::Socket ();
20 20
21use AnyEvent::MP::Transport (); 21use AnyEvent::MP::Transport ();
22 22
23use base Exporter::; 23sub new {
24
25our $VERSION = '0.0';
26
27our $DEFAULT_PORT = "4040";
28
29sub normalise_noderef($) {
30 my ($noderef) = @_; 24 my ($self, $noderef) = @_;
31 25
32 my $cv = AE::cv; 26 $self = bless { noderef => $noderef }, $self;
33 my @res;
34 27
35 $cv->begin (sub { 28 $self->transport_reset;
36 my %seen; 29
37 my @refs; 30 $self
38 for (sort { $a->[0] <=> $b->[0] } @res) { 31}
39 push @refs, $_->[1] unless $seen{$_->[1]}++ 32
33sub send {
34 &{ shift->{send} }
35}
36
37package AnyEvent::MP::Node::External;
38
39use base "AnyEvent::MP::Node";
40
41# called at init time, mostly sets {send}
42sub transport_reset {
43 my ($self) = @_;
44
45 delete $self->{transport};
46
47 Scalar::Util::weaken $self;
48
49 $self->{send} = sub {
50 push @{$self->{queue}}, shift;
51 $self->connect;
52 };
53}
54
55# called only after successful handshake
56sub transport_error {
57 my ($self, @reason) = @_;
58
59 my $no_transport = !$self->{transport};
60
61 delete $self->{connect_w};
62 delete $self->{connect_to};
63
64 delete $self->{queue};
65 $self->transport_reset;
66
67 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 0, @reason)
68 unless $no_transport;
69
70 if (my $mon = delete $self->{lmon}) {
71 $_->(@reason) for map @$_, values %$mon;
72 }
73}
74
75# called after handshake was successful
76sub transport_connect {
77 my ($self, $transport) = @_;
78
79 $self->transport_error (transport_error => "switched connections")
80 if $self->{transport};
81
82 delete $self->{connect_w};
83 delete $self->{connect_to};
84
85 $self->{transport} = $transport;
86
87 my $transport_send = $transport->can ("send");
88
89 $self->{send} = sub {
90 $transport_send->($transport, $_[0]);
91 };
92
93 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1);
94
95 $transport->send ($_)
96 for @{ delete $self->{queue} || [] };
97}
98
99sub connect {
100 my ($self) = @_;
101
102 Scalar::Util::weaken $self;
103
104 $self->{connect_to} ||= AE::timer
105 $AnyEvent::MP::Config::CFG{monitor_timeout} || $AnyEvent::MP::Kernel::MONITOR_TIMEOUT,
106 0,
107 sub {
108 $self->transport_error (transport_error => $self->{noderef}, "unable to connect");
40 } 109 };
41 shift->send (join ",", @refs);
42 });
43 110
44 $noderef = $DEFAULT_PORT unless length $noderef; 111 unless ($self->{connect_w}) {
112 my @endpoints;
113 my %trial;
45 114
46 my $idx; 115 $self->{connect_w} = AE::timer
47 for my $t (split /,/, $noderef) { 116 0,
48 my $pri = ++$idx; 117 $AnyEvent::MP::Config::CFG{connect_interval} || $AnyEvent::MP::Kernel::CONNECT_INTERVAL,
49 118 sub {
50 #TODO: this should be outside normalise_noderef and in become_public 119 @endpoints = split /,/, $self->{noderef}
51 if ($t =~ /^\d*$/) { 120 unless @endpoints;
52 require POSIX;
53 my $nodename = (POSIX::uname ())[1];
54 121
55 $cv->begin; 122 my $endpoint = shift @endpoints;
56 AnyEvent::Socket::resolve_sockaddr $nodename, $t || "aemp=$DEFAULT_PORT", "tcp", 0, undef, sub { 123
57 for (@_) { 124 $trial{$endpoint} ||= do {
58 my ($service, $host) = AnyEvent::Socket::unpack_sockaddr $_->[3]; 125 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint
59 push @res, [ 126 or return $AnyEvent::MP::Kernel::WARN->("$self->{noderef}: not a resolved node reference.");
60 $pri += 1e-5, 127
61 AnyEvent::Socket::format_hostport AnyEvent::Socket::format_address $host, $service 128 AnyEvent::MP::Transport::mp_connect
129 $host, $port,
130 sub { delete $trial{$endpoint} }
62 ]; 131 ;
63 } 132 };
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 } 133 }
90 } 134 ;
91 } 135 }
92
93 $cv->end;
94
95 $cv
96} 136}
97 137
98sub new { 138sub kill {
99 my ($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, $msg) = @_; 139 my ($self, $port, @reason) = @_;
110 140
111 if ($self->{transport}) { 141 $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 $self->connect;
118 }
119} 142}
120 143
121sub monitor { 144sub monitor {
122 my ($self, $portid, $cb) = @_; 145 my ($self, $portid, $cb) = @_;
123
124 return $cb->()
125 if $self->{failed};
126 146
127 my $list = $self->{lmon}{$portid} ||= []; 147 my $list = $self->{lmon}{$portid} ||= [];
128 148
129 $self->send (["", mon1 => $portid]) 149 $self->send (["", mon1 => $portid])
130 unless @$list; 150 unless @$list;
… …
144 $self->send (["", mon0 => $portid]); 164 $self->send (["", mon0 => $portid]);
145 delete $self->{monitor}{$portid}; 165 delete $self->{monitor}{$portid};
146 } 166 }
147} 167}
148 168
169package AnyEvent::MP::Node::Direct;
170
171use base "AnyEvent::MP::Node::External";
172
173package AnyEvent::MP::Node::Indirect;
174
175use base "AnyEvent::MP::Node::Direct";
176
149sub set_transport { 177sub transport_reset {
150 my ($self, $transport) = @_; 178 my ($self) = @_;
151 179
152 $self->clr_transport 180 # as an optimisation, immediately nuke slave nodes
181 delete $AnyEvent::MP::Kernel::NODE{$self->{noderef}}
153 if $self->{transport}; 182 if $self->{transport};
154 183
155 delete $self->{trial}; 184 $self->SUPER::transport_reset;
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) = @_;
177
178 delete $self->{transport};
179 $self->{failed} = 1;
180
181 if (my $mon = delete $self->{monitor}) {
182 $_->() for map @$_, values %$mon;
183 }
184
185 $self->connect;
186} 185}
187 186
188sub connect { 187sub connect {
189 my ($self) = @_; 188 my ($self) = @_;
190 189
190 $self->transport_error (transport_error => $self->{noderef}, "unable to connect to indirect node");
191}
192
193package AnyEvent::MP::Node::Self;
194
195use base "AnyEvent::MP::Node";
196
197sub connect {
198 # we are trivially connected
199}
200
201sub transport_reset {
202 my ($self) = @_;
203
191 Scalar::Util::weaken $self; 204 Scalar::Util::weaken $self;
192 205
193 unless (exists $self->{n_noderef}) { 206 $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 207 local $AnyEvent::MP::Kernel::SRCNODE = $self;
203 for split /,/, $noderef; 208 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 $self->connect;
241 }; 209 };
242} 210}
243 211
244package AnyEvent::MP::Node::Self; 212sub kill {
213 my ($self, $port, @reason) = @_;
245 214
246use base "AnyEvent::MP::Node"; 215 delete $AnyEvent::MP::Kernel::PORT{$port};
216 delete $AnyEvent::MP::Kernel::PORT_DATA{$port};
247 217
248sub set_transport { 218 my $mon = delete $AnyEvent::MP::Kernel::LMON{$port}
249 die "FATAL error, set_transport was called"; 219 or !@reason
250} 220 or $AnyEvent::MP::Kernel::WARN->("unmonitored local port $port died with reason: @reason");
251 221
252sub send { 222 $_->(@reason) for values %$mon;
253 local $AnyEvent::MP::Base::SRCNODE = $_[0];
254 AnyEvent::MP::Base::_inject (@{ $_[1] });
255} 223}
256 224
257sub monitor { 225sub monitor {
258 my ($self, $portid, $cb) = @_; 226 my ($self, $portid, $cb) = @_;
259 227
260 return $cb->() 228 return $cb->(no_such_port => "cannot monitor nonexistent port")
261 unless exists $AnyEvent::MP::Base::PORT{$portid}; 229 unless exists $AnyEvent::MP::Kernel::PORT{$portid};
262 230
263 $AnyEvent::MP::Base::LMON{$portid}{$cb+0} = $cb; 231 $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0} = $cb;
264} 232}
265 233
266sub unmonitor { 234sub unmonitor {
267 my ($self, $portid, $cb) = @_; 235 my ($self, $portid, $cb) = @_;
268 236
269 delete $AnyEvent::MP::Base::LMON{$portid}{$cb+0}; 237 delete $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0};
270} 238}
271 239
272=head1 SEE ALSO 240=head1 SEE ALSO
273 241
274L<AnyEvent>. 242L<AnyEvent::MP>.
275 243
276=head1 AUTHOR 244=head1 AUTHOR
277 245
278 Marc Lehmann <schmorp@schmorp.de> 246 Marc Lehmann <schmorp@schmorp.de>
279 http://home.schmorp.de/ 247 http://home.schmorp.de/

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