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Comparing AnyEvent-MP/MP/Node.pm (file contents):
Revision 1.5 by root, Sun Aug 2 14:44:37 2009 UTC vs.
Revision 1.25 by root, Sat Aug 15 15:08:07 2009 UTC

… …
13package AnyEvent::MP::Node; 13package AnyEvent::MP::Node;
14 14
15use common::sense; 15use common::sense;
16 16
17use AE (); 17use AE ();
18use AnyEvent::Util ();
18use AnyEvent::Socket (); 19use AnyEvent::Socket ();
19 20
20use AnyEvent::MP::Transport (); 21use AnyEvent::MP::Transport ();
21 22
22use base Exporter::;
23
24our $VERSION = '0.0';
25
26our $DEFAULT_PORT = "4040";
27
28sub normalise_noderef($) {
29 my ($noderef) = @_;
30
31 my $cv = AE::cv;
32 my @res;
33
34 $cv->begin (sub {
35 my %seen;
36 my @refs;
37 for (sort { $a->[0] <=> $b->[0] } @res) {
38 push @refs, $_->[1] unless $seen{$_->[1]}++
39 }
40 shift->send (join ",", @refs);
41 });
42
43 $noderef = $DEFAULT_PORT unless length $noderef;
44
45 my $idx;
46 for my $t (split /,/, $noderef) {
47 my $pri = ++$idx;
48
49 #TODO: this should be outside normalise_noderef and in become_public
50 if ($t =~ /^\d*$/) {
51 require POSIX;
52 my $nodename = (POSIX::uname ())[1];
53
54 $cv->begin;
55 AnyEvent::Socket::resolve_sockaddr $nodename, $t || "aemp=$DEFAULT_PORT", "tcp", 0, undef, sub {
56 for (@_) {
57 my ($service, $host) = AnyEvent::Socket::unpack_sockaddr $_->[3];
58 push @res, [
59 $pri += 1e-5,
60 AnyEvent::Socket::format_hostport AnyEvent::Socket::format_address $host, $service
61 ];
62 }
63 $cv->end;
64 };
65
66# my (undef, undef, undef, undef, @ipv4) = gethostbyname $nodename;
67#
68# for (@ipv4) {
69# push @res, [
70# $pri,
71# AnyEvent::Socket::format_hostport AnyEvent::Socket::format_address $_, $t || $DEFAULT_PORT,
72# ];
73# }
74 } else {
75 my ($host, $port) = AnyEvent::Socket::parse_hostport $t, "aemp=$DEFAULT_PORT"
76 or Carp::croak "$t: unparsable transport descriptor";
77
78 $cv->begin;
79 AnyEvent::Socket::resolve_sockaddr $host, $port, "tcp", 0, undef, sub {
80 for (@_) {
81 my ($service, $host) = AnyEvent::Socket::unpack_sockaddr $_->[3];
82 push @res, [
83 $pri += 1e-5,
84 AnyEvent::Socket::format_hostport AnyEvent::Socket::format_address $host, $service
85 ];
86 }
87 $cv->end;
88 }
89 }
90 }
91
92 $cv->end;
93
94 $cv
95}
96
97sub new { 23sub new {
98 my ($class, $noderef) = @_; 24 my ($self, $noderef) = @_;
99 25
100 bless { noderef => $noderef }, $class 26 $self = bless { noderef => $noderef }, $self;
101}
102 27
28 $self->transport_reset;
29
30 $self
31}
32
33sub send {
34 &{ shift->{send} }
35}
36
103package AnyEvent::MP::Node::Direct; 37package AnyEvent::MP::Node::External;
104 38
105use base "AnyEvent::MP::Node"; 39use base "AnyEvent::MP::Node";
106 40
107sub send { 41# called at init time, mostly sets {send}
42sub transport_reset {
108 my ($self, $msg) = @_; 43 my ($self) = @_;
109 44
110 if ($self->{transport}) { 45 delete $self->{transport};
111 $self->{transport}->send ($msg); 46
112 } elsif ($self->{queue}) { 47 Scalar::Util::weaken $self;
48
49 $self->{send} = sub {
113 push @{ $self->{queue} }, $msg; 50 push @{$self->{queue}}, shift;
114 } else {
115 $self->{queue} = [$msg];
116 $self->connect; 51 $self->connect;
117 } 52 };
118}
119 53
54 $self->connect
55 if $self->{autoconnect};
56}
57
58# called only after successful handshake
120sub set_transport { 59sub transport_error {
60 my ($self, @reason) = @_;
61
62 my $no_transport = !$self->{transport};
63
64 delete $self->{connect_w};
65 delete $self->{connect_to};
66
67 delete $self->{queue};
68 $self->transport_reset;
69
70 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 0, @reason)
71 unless $no_transport;
72
73 if (my $mon = delete $self->{lmon}) {
74 $_->(@reason) for map @$_, values %$mon;
75 }
76}
77
78# called after handshake was successful
79sub transport_connect {
121 my ($self, $transport) = @_; 80 my ($self, $transport) = @_;
122 81
123 delete $self->{trial}; 82 # first connect with a master node
83 $AnyEvent::MP::Kernel::SLAVE->($self)
84 if ref $AnyEvent::MP::Kernel::SLAVE;
85
86 $self->transport_error (transport_error => "switched connections")
87 if $self->{transport};
88
124 delete $self->{next_connect}; 89 delete $self->{connect_w};
90 delete $self->{connect_to};
125 91
126 if (
127 exists $self->{remote_uniq}
128 && $self->{remote_uniq} ne $transport->{remote_uniq}
129 ) {
130 # uniq changed, drop queue
131 delete $self->{queue};
132 #TODO: "DOWN"
133 }
134
135 $self->{remote_uniq} = $transport->{remote_uniq};
136 $self->{transport} = $transport; 92 $self->{transport} = $transport;
93
94 my $transport_send = $transport->can ("send");
95
96 $self->{send} = sub {
97 $transport_send->($transport, $_[0]);
98 };
99
100 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1);
137 101
138 $transport->send ($_) 102 $transport->send ($_)
139 for @{ delete $self->{queue} || [] }; 103 for @{ delete $self->{queue} || [] };
140} 104}
141 105
142sub clr_transport {
143 my ($self) = @_;
144
145 delete $self->{transport};
146
147 $self->connect;
148}
149
150sub connect { 106sub connect {
151 my ($self) = @_; 107 my ($self) = @_;
152 108
109 return if $self->{transport};
110
153 Scalar::Util::weaken $self; 111 Scalar::Util::weaken $self;
154 112
155 unless (exists $self->{n_noderef}) { 113 $self->{connect_to} ||= AE::timer
156 return if $self->{n_noderef_}++; 114 $AnyEvent::MP::Config::CFG{monitor_timeout} || $AnyEvent::MP::Kernel::MONITOR_TIMEOUT,
157 (AnyEvent::MP::Node::normalise_noderef ($self->{noderef}))->cb (sub { 115 0,
116 sub {
117 $self->transport_error (transport_error => $self->{noderef}, "unable to connect");
118 };
119
120 unless ($self->{connect_w}) {
121 my @endpoints;
122 my %trial;
123
124 $self->{connect_w} = AE::timer
125 0,
126 $AnyEvent::MP::Config::CFG{connect_interval} || $AnyEvent::MP::Kernel::CONNECT_INTERVAL,
127 sub {
128 @endpoints = split /,/, $self->{noderef}
129 unless @endpoints;
130
131 my $endpoint = shift @endpoints;
132
133 $trial{$endpoint} ||= do {
134 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint
135 or return $AnyEvent::MP::Kernel::WARN->(1, "$self->{noderef}: not a resolved node reference.");
136
137 AnyEvent::MP::Transport::mp_connect
138 $host, $port,
139 sub { delete $trial{$endpoint} }
140 ;
141 };
142 }
143 ;
144 }
145}
146
147sub kill {
148 my ($self, $port, @reason) = @_;
149
150 $self->send (["", kil => $port, @reason]);
151}
152
153sub monitor {
154 my ($self, $portid, $cb) = @_;
155
156 my $list = $self->{lmon}{$portid} ||= [];
157
158 $self->send (["", mon1 => $portid])
159 unless @$list || !length $portid;
160
161 push @$list, $cb;
162}
163
164sub unmonitor {
165 my ($self, $portid, $cb) = @_;
166
167 my $list = $self->{lmon}{$portid}
158 $self or return; 168 or return;
159 delete $self->{n_noderef_}; 169
170 @$list = grep $_ != $cb, @$list;
171
172 unless (@$list) {
173 $self->send (["", mon0 => $portid]);
174 delete $self->{monitor}{$portid};
175 }
176}
177
178package AnyEvent::MP::Node::Direct;
179
180use base "AnyEvent::MP::Node::External";
181
182package AnyEvent::MP::Node::Indirect;
183
184use base "AnyEvent::MP::Node::Direct";
185
186sub master {
187 my ($self) = @_;
188
189 my (undef, $master) = split /\@/, $self->{noderef}, 2;
190 $master =~ s/!/,/g;
191 $master
192}
193
194sub transport_reset {
195 my ($self) = @_;
196
197 if ($self->{transport}) {
198 # as an optimisation, immediately nuke slave nodes
199 delete $AnyEvent::MP::Kernel::NODE{$self->{noderef}};
200 } else {
201 $self->SUPER::transport_reset;
202 return;#d##TODO#
203
160 my $noderef = shift->recv; 204 my $noderef = $self->{noderef};
205 my $master = $self->master;
161 206
162 $self->{n_noderef} = $noderef; 207 # slave nodes are so cool - we can always send to them :)
163 208
164 $AnyEvent::MP::Base::NODE{$_} = $self 209 $self->{send} = sub {
165 for split /,/, $noderef;
166
167 $self->connect; 210 $self->connect;
168 }); 211 snd $master, snd => $noderef, @_;
169 return;
170 }
171
172 $self->{retry} ||= [split /,/, $self->{n_noderef}];
173
174 my $endpoint = shift @{ $self->{retry} };
175
176 if (defined $endpoint) {
177 $self->{trial}{$endpoint} ||= do {
178 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint
179 or return;
180
181 my ($w, $g);
182
183 $w = AE::timer $AnyEvent::MP::Base::CONNECT_TIMEOUT, 0, sub {
184 delete $self->{trial}{$endpoint};
185 };
186 $g = AnyEvent::MP::Transport::mp_connect
187 $host, $port,
188 sub {
189 delete $self->{trial}{$endpoint}
190 unless @_;
191 $g = shift;
192 };
193 ;
194
195 [$w, \$g]
196 }; 212 };
197 } else {
198 delete $self->{retry};
199 } 213 }
214}
200 215
201 $self->{next_connect} = AE::timer $AnyEvent::MP::Base::CONNECT_INTERVAL, 0, sub { 216sub connect {
202 $self->connect; 217 my ($self) = @_;
218
219 #TODO#
220# # ask for a connection, #TODO# rate-limit this somehow
221# snd $self->master, relay => $self->{noderef}, connect_node => $AnyEvent::MP::Kernel::NODE;
222}
223
224package AnyEvent::MP::Node::Self;
225
226use base "AnyEvent::MP::Node";
227
228sub connect {
229 # we are trivially connected
230}
231
232sub transport_reset {
233 my ($self) = @_;
234
235 Scalar::Util::weaken $self;
236
237 $self->{send} = sub {
238 local $AnyEvent::MP::Kernel::SRCNODE = $self;
239 AnyEvent::MP::Kernel::_inject (@{ $_[0] });
203 }; 240 };
204} 241}
205 242
206package AnyEvent::MP::Node::Self; 243sub kill {
244 my ($self, $port, @reason) = @_;
207 245
208use base "AnyEvent::MP::Node"; 246 delete $AnyEvent::MP::Kernel::PORT{$port};
247 delete $AnyEvent::MP::Kernel::PORT_DATA{$port};
209 248
210sub set_transport { 249 my $mon = delete $AnyEvent::MP::Kernel::LMON{$port}
211 die "FATAL error, set_transport was called"; 250 or !@reason
212} 251 or $AnyEvent::MP::Kernel::WARN->(2, "unmonitored local port $port died with reason: @reason");
213 252
214sub send { 253 $_->(@reason) for values %$mon;
215 AnyEvent::MP::Base::_inject ($_[1]); 254}
255
256sub monitor {
257 my ($self, $portid, $cb) = @_;
258
259 return $cb->(no_such_port => "cannot monitor nonexistent port")
260 unless exists $AnyEvent::MP::Kernel::PORT{$portid};
261
262 $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0} = $cb;
263}
264
265sub unmonitor {
266 my ($self, $portid, $cb) = @_;
267
268 delete $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0};
216} 269}
217 270
218=head1 SEE ALSO 271=head1 SEE ALSO
219 272
220L<AnyEvent>. 273L<AnyEvent::MP>.
221 274
222=head1 AUTHOR 275=head1 AUTHOR
223 276
224 Marc Lehmann <schmorp@schmorp.de> 277 Marc Lehmann <schmorp@schmorp.de>
225 http://home.schmorp.de/ 278 http://home.schmorp.de/

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