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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 1.22 by root, Thu Aug 13 22:50:47 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 {
23
24our $VERSION = '0.0';
25
26our $DEFAULT_PORT = "4040";
27
28sub normalise_noderef($) {
29 my ($noderef) = @_; 24 my ($self, $noderef) = @_;
30 25
31 my $cv = AE::cv; 26 $self = bless { noderef => $noderef }, $self;
32 my @res;
33 27
34 $cv->begin (sub { 28 $self->transport_reset;
35 my %seen; 29
36 my @refs; 30 $self
37 for (sort { $a->[0] <=> $b->[0] } @res) { 31}
38 push @refs, $_->[1] unless $seen{$_->[1]}++ 32
39 } 33sub send {
40 shift->send (join ",", @refs); 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;
41 }); 52 };
53}
42 54
43 $noderef = $DEFAULT_PORT unless length $noderef; 55# called only after successful handshake
56sub transport_error {
57 my ($self, @reason) = @_;
44 58
45 my $idx; 59 my $no_transport = !$self->{transport};
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 60
54 $cv->begin; 61 delete $self->{connect_w};
55 AnyEvent::Socket::resolve_sockaddr $nodename, $t || "aemp=$DEFAULT_PORT", "tcp", 0, undef, sub { 62 delete $self->{connect_to};
56 for (@_) {
57 my ($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 63
66# my (undef, undef, undef, undef, @ipv4) = gethostbyname $nodename; 64 delete $self->{queue};
67# 65 $self->transport_reset;
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 66
78 $cv->begin; 67 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 0, @reason)
79 AnyEvent::Socket::resolve_sockaddr $host, $port, "tcp", 0, undef, sub { 68 unless $no_transport;
80 for (@_) { 69
81 my ($service, $host) = AnyEvent::Socket::unpack_sockaddr $_->[3]; 70 if (my $mon = delete $self->{lmon}) {
82 push @res, [ 71 $_->(@reason) for map @$_, values %$mon;
83 $pri += 1e-5,
84 AnyEvent::Socket::format_hostport AnyEvent::Socket::format_address $host, $service
85 ];
86 }
87 $cv->end;
88 }
89 }
90 } 72 }
91
92 $cv->end;
93
94 $cv
95} 73}
96 74
97sub new { 75# called after handshake was successful
98 my ($class, $noderef) = @_; 76sub 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, $transport) = @_; 77 my ($self, $transport) = @_;
122 78
123 delete $self->{trial}; 79 $self->transport_error (transport_error => "switched connections")
80 if $self->{transport};
81
124 delete $self->{next_connect}; 82 delete $self->{connect_w};
83 delete $self->{connect_to};
125 84
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; 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);
137 94
138 $transport->send ($_) 95 $transport->send ($_)
139 for @{ delete $self->{queue} || [] }; 96 for @{ delete $self->{queue} || [] };
140} 97}
141 98
142sub clr_transport {
143 my ($self) = @_;
144
145 delete $self->{transport};
146
147 $self->connect;
148}
149
150sub connect { 99sub connect {
151 my ($self) = @_; 100 my ($self) = @_;
152 101
153 Scalar::Util::weaken $self; 102 Scalar::Util::weaken $self;
154 103
155 unless (exists $self->{n_noderef}) { 104 $self->{connect_to} ||= AE::timer
156 return if $self->{n_noderef_}++; 105 $AnyEvent::MP::Config::CFG{monitor_timeout} || $AnyEvent::MP::Kernel::MONITOR_TIMEOUT,
157 (AnyEvent::MP::Node::normalise_noderef ($self->{noderef}))->cb (sub { 106 0,
158 $self or return; 107 sub {
159 delete $self->{n_noderef_}; 108 $self->transport_error (transport_error => $self->{noderef}, "unable to connect");
160 my $noderef = shift->recv;
161
162 $self->{n_noderef} = $noderef;
163
164 $AnyEvent::MP::Base::NODE{$_} = $self
165 for split /,/, $noderef;
166
167 $self->connect;
168 }); 109 };
169 return; 110
111 unless ($self->{connect_w}) {
112 my @endpoints;
113 my %trial;
114
115 $self->{connect_w} = AE::timer
116 0,
117 $AnyEvent::MP::Config::CFG{connect_interval} || $AnyEvent::MP::Kernel::CONNECT_INTERVAL,
118 sub {
119 @endpoints = split /,/, $self->{noderef}
120 unless @endpoints;
121
122 my $endpoint = shift @endpoints;
123
124 $trial{$endpoint} ||= do {
125 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint
126 or return $AnyEvent::MP::Kernel::WARN->("$self->{noderef}: not a resolved node reference.");
127
128 AnyEvent::MP::Transport::mp_connect
129 $host, $port,
130 sub { delete $trial{$endpoint} }
131 ;
132 };
133 }
134 ;
170 } 135 }
136}
171 137
172 $self->{retry} ||= [split /,/, $self->{n_noderef}]; 138sub kill {
139 my ($self, $port, @reason) = @_;
173 140
174 my $endpoint = shift @{ $self->{retry} }; 141 $self->send (["", kil => $port, @reason]);
142}
175 143
176 if (defined $endpoint) { 144sub monitor {
177 $self->{trial}{$endpoint} ||= do { 145 my ($self, $portid, $cb) = @_;
178 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint 146
147 my $list = $self->{lmon}{$portid} ||= [];
148
149 $self->send (["", mon1 => $portid])
150 unless @$list;
151
152 push @$list, $cb;
153}
154
155sub unmonitor {
156 my ($self, $portid, $cb) = @_;
157
158 my $list = $self->{lmon}{$portid}
179 or return; 159 or return;
180 160
181 my ($w, $g); 161 @$list = grep $_ != $cb, @$list;
182 162
183 $w = AE::timer $AnyEvent::MP::Base::CONNECT_TIMEOUT, 0, sub { 163 unless (@$list) {
184 delete $self->{trial}{$endpoint}; 164 $self->send (["", mon0 => $portid]);
185 }; 165 delete $self->{monitor}{$portid};
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 } 166 }
167}
200 168
201 $self->{next_connect} = AE::timer $AnyEvent::MP::Base::CONNECT_INTERVAL, 0, sub { 169package AnyEvent::MP::Node::Direct;
202 $self->connect; 170
171use base "AnyEvent::MP::Node::External";
172
173package AnyEvent::MP::Node::Indirect;
174
175use base "AnyEvent::MP::Node::Direct";
176
177sub transport_reset {
178 my ($self) = @_;
179
180 # as an optimisation, immediately nuke slave nodes
181 delete $AnyEvent::MP::Kernel::NODE{$self->{noderef}}
182 if $self->{transport};
183
184 $self->SUPER::transport_reset;
185}
186
187sub connect {
188 my ($self) = @_;
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
204 Scalar::Util::weaken $self;
205
206 $self->{send} = sub {
207 local $AnyEvent::MP::Kernel::SRCNODE = $self;
208 AnyEvent::MP::Kernel::_inject (@{ $_[0] });
203 }; 209 };
204} 210}
205 211
206package AnyEvent::MP::Node::Self; 212sub kill {
213 my ($self, $port, @reason) = @_;
207 214
208use base "AnyEvent::MP::Node"; 215 delete $AnyEvent::MP::Kernel::PORT{$port};
216 delete $AnyEvent::MP::Kernel::PORT_DATA{$port};
209 217
210sub set_transport { 218 my $mon = delete $AnyEvent::MP::Kernel::LMON{$port}
211 die "FATAL error, set_transport was called"; 219 or !@reason
212} 220 or $AnyEvent::MP::Kernel::WARN->("unmonitored local port $port died with reason: @reason");
213 221
214sub send { 222 $_->(@reason) for values %$mon;
215 AnyEvent::MP::Base::_inject ($_[1]); 223}
224
225sub monitor {
226 my ($self, $portid, $cb) = @_;
227
228 return $cb->(no_such_port => "cannot monitor nonexistent port")
229 unless exists $AnyEvent::MP::Kernel::PORT{$portid};
230
231 $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0} = $cb;
232}
233
234sub unmonitor {
235 my ($self, $portid, $cb) = @_;
236
237 delete $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0};
216} 238}
217 239
218=head1 SEE ALSO 240=head1 SEE ALSO
219 241
220L<AnyEvent>. 242L<AnyEvent::MP>.
221 243
222=head1 AUTHOR 244=head1 AUTHOR
223 245
224 Marc Lehmann <schmorp@schmorp.de> 246 Marc Lehmann <schmorp@schmorp.de>
225 http://home.schmorp.de/ 247 http://home.schmorp.de/

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