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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 1.28 by root, Thu Aug 27 21:29:37 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::; 23sub new {
24 my ($self, $id) = @_;
23 25
24our $VERSION = '0.0'; 26 $self = bless { id => $id }, $self;
25 27
26our $DEFAULT_PORT = "4040"; 28 $self->init;
29 $self->transport_reset;
27 30
28sub normalise_noderef($) { 31 $self
32}
33
34sub init {
35 #
36}
37
38sub send {
39 &{ shift->{send} }
40}
41
42# nodes reachable via the network
43package AnyEvent::MP::Node::External;
44
45use base "AnyEvent::MP::Node";
46
47# called at init time, mostly sets {send}
48sub transport_reset {
29 my ($noderef) = @_; 49 my ($self) = @_;
30 50
31 my $cv = AE::cv; 51 delete $self->{transport};
32 my @res;
33 52
34 $cv->begin (sub { 53 Scalar::Util::weaken $self;
35 my %seen; 54
36 my @refs; 55 $self->{send} = sub {
37 for (sort { $a->[0] <=> $b->[0] } @res) { 56 push @{$self->{queue}}, shift;
38 push @refs, $_->[1] unless $seen{$_->[1]}++ 57 $self->connect;
39 }
40 shift->send (join ",", @refs);
41 }); 58 };
42 59
43 $noderef = $DEFAULT_PORT unless length $noderef; 60 $self->connect
61 if $self->{autoconnect};
62}
44 63
45 my $idx; 64# called only after successful handshake
46 for my $t (split /,/, $noderef) { 65sub transport_error {
47 my $pri = ++$idx; 66 my ($self, @reason) = @_;
48
49 #TODO: this should be outside normalise_noderef and in become_public
50 if ($t =~ /^\d*$/) {
51 require POSIX;
52 my $nodename = (POSIX::uname ())[1];
53 67
54 $cv->begin; 68 my $no_transport = !$self->{transport};
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 69
66# my (undef, undef, undef, undef, @ipv4) = gethostbyname $nodename; 70 delete $self->{connect_w};
67# 71 delete $self->{connect_to};
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 72
78 $cv->begin; 73 delete $self->{queue};
79 AnyEvent::Socket::resolve_sockaddr $host, $port, "tcp", 0, undef, sub { 74 $self->transport_reset;
80 for (@_) { 75
81 my ($service, $host) = AnyEvent::Socket::unpack_sockaddr $_->[3]; 76 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 0, @reason)
82 push @res, [ 77 unless $no_transport;
83 $pri += 1e-5, 78
84 AnyEvent::Socket::format_hostport AnyEvent::Socket::format_address $host, $service 79 if (my $mon = delete $self->{lmon}) {
85 ]; 80 $_->(@reason) for map @$_, values %$mon;
86 }
87 $cv->end;
88 }
89 }
90 } 81 }
91
92 $cv->end;
93
94 $cv
95} 82}
96 83
97sub new { 84# called after handshake was successful
98 my ($class, $noderef) = @_; 85sub transport_connect {
99
100 bless { noderef => $noderef }, $class
101}
102
103package AnyEvent::MP::Node::Direct;
104
105use base "AnyEvent::MP::Node";
106
107sub send {
108 my ($self, $msg) = @_;
109
110 if ($self->{transport}) {
111 $self->{transport}->send ($msg);
112 } elsif ($self->{queue}) {
113 push @{ $self->{queue} }, $msg;
114 } else {
115 $self->{queue} = [$msg];
116 $self->connect;
117 }
118}
119
120sub set_transport {
121 my ($self, $transport) = @_; 86 my ($self, $transport) = @_;
122 87
123 delete $self->{trial}; 88 delete $self->{trial};
89
90 $self->transport_error (transport_error => "switched connections")
91 if $self->{transport};
92
124 delete $self->{next_connect}; 93 delete $self->{connect_w};
94 delete $self->{connect_to};
125 95
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; 96 $self->{transport} = $transport;
97
98 my $transport_send = $transport->can ("send");
99
100 $self->{send} = sub {
101 $transport_send->($transport, $_[0]);
102 };
103
104 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1);
137 105
138 $transport->send ($_) 106 $transport->send ($_)
139 for @{ delete $self->{queue} || [] }; 107 for @{ delete $self->{queue} || [] };
140} 108}
141 109
110sub connect {
111 my ($self, @addresses) = @_;
112
113 return if $self->{transport};
114
115 Scalar::Util::weaken $self;
116
117 $self->{connect_to} ||= AE::timer
118 $AnyEvent::MP::Config::CFG{monitor_timeout} || $AnyEvent::MP::Kernel::MONITOR_TIMEOUT,
119 0,
120 sub {
121 $self->transport_error (transport_error => $self->{id}, "unable to connect");
122 };
123
124 $AnyEvent::MP::Kernel::WARN->(9, "connecting to $self->{id} with [@addresses]");
125 return unless @addresses;
126
127 unless ($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 ;
151 }
152}
153
154sub kill {
155 my ($self, $port, @reason) = @_;
156
157 $self->send (["", kil => $port, @reason]);
158}
159
160sub monitor {
161 my ($self, $portid, $cb) = @_;
162
163 my $list = $self->{lmon}{$portid} ||= [];
164
165 $self->send (["", mon1 => $portid])
166 unless @$list || !length $portid;
167
168 push @$list, $cb;
169}
170
171sub unmonitor {
172 my ($self, $portid, $cb) = @_;
173
174 my $list = $self->{lmon}{$portid}
175 or return;
176
177 @$list = grep $_ != $cb, @$list;
178
179 unless (@$list) {
180 $self->send (["", mon0 => $portid]);
181 delete $self->{monitor}{$portid};
182 }
183}
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
142sub clr_transport { 198sub transport_reset {
143 my ($self) = @_; 199 my ($self) = @_;
144 200
145 delete $self->{transport};
146
147 $self->connect;
148}
149
150sub connect {
151 my ($self) = @_;
152
153 Scalar::Util::weaken $self; 201 Scalar::Util::weaken $self;
154 202
155 unless (exists $self->{n_noderef}) { 203 $self->{send} = sub {
156 return if $self->{n_noderef_}++;
157 (AnyEvent::MP::Node::normalise_noderef ($self->{noderef}))->cb (sub {
158 $self or return;
159 delete $self->{n_noderef_};
160 my $noderef = shift->recv;
161
162 $self->{n_noderef} = $noderef;
163
164 $AnyEvent::MP::Base::NODE{$_} = $self 204 local $AnyEvent::MP::Kernel::SRCNODE = $self;
165 for split /,/, $noderef; 205 AnyEvent::MP::Kernel::_inject (@{ $_[0] });
166
167 $self->connect;
168 });
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 };
197 } else {
198 delete $self->{retry};
199 }
200
201 $self->{next_connect} = AE::timer $AnyEvent::MP::Base::CONNECT_INTERVAL, 0, sub {
202 $self->connect;
203 }; 206 };
204} 207}
205 208
206package AnyEvent::MP::Node::Self; 209sub transport_connect {
210 my ($self, $tp) = @_;
207 211
208use base "AnyEvent::MP::Node"; 212 $AnyEvent::MP::Kernel::WARN->(9, "I refuse to talk to myself ($tp->{peerhost}:$tp->{peerport})");
209
210sub set_transport {
211 die "FATAL error, set_transport was called";
212} 213}
213 214
214sub send { 215sub kill {
215 AnyEvent::MP::Base::_inject ($_[1]); 216 my ($self, $port, @reason) = @_;
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;
226}
227
228sub monitor {
229 my ($self, $portid, $cb) = @_;
230
231 return $cb->(no_such_port => "cannot monitor nonexistent port")
232 unless exists $AnyEvent::MP::Kernel::PORT{$portid};
233
234 $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0} = $cb;
235}
236
237sub unmonitor {
238 my ($self, $portid, $cb) = @_;
239
240 delete $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0};
216} 241}
217 242
218=head1 SEE ALSO 243=head1 SEE ALSO
219 244
220L<AnyEvent>. 245L<AnyEvent::MP>.
221 246
222=head1 AUTHOR 247=head1 AUTHOR
223 248
224 Marc Lehmann <schmorp@schmorp.de> 249 Marc Lehmann <schmorp@schmorp.de>
225 http://home.schmorp.de/ 250 http://home.schmorp.de/

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