ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/AnyEvent-MP/MP/Node.pm
(Generate patch)

Comparing AnyEvent-MP/MP/Node.pm (file contents):
Revision 1.5 by root, Sun Aug 2 14:44:37 2009 UTC vs.
Revision 1.20 by root, Thu Aug 13 00:23:36 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 $self->{transport}
46 for my $t (split /,/, $noderef) { 60 or return;
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 61
54 $cv->begin; 62 delete $self->{queue};
55 AnyEvent::Socket::resolve_sockaddr $nodename, $t || "aemp=$DEFAULT_PORT", "tcp", 0, undef, sub { 63 $self->transport_reset;
56 for (@_) {
57 my ($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 64
66# my (undef, undef, undef, undef, @ipv4) = gethostbyname $nodename; 65 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 0, @reason);
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 66
78 $cv->begin; 67 if (my $mon = delete $self->{lmon}) {
79 AnyEvent::Socket::resolve_sockaddr $host, $port, "tcp", 0, undef, sub { 68 $_->(@reason) for map @$_, values %$mon;
80 for (@_) {
81 my ($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 } 69 }
91
92 $cv->end;
93
94 $cv
95} 70}
96 71
97sub new { 72# called after handshake was successful
98 my ($class, $noderef) = @_; 73sub 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, $transport) = @_; 74 my ($self, $transport) = @_;
122 75
123 delete $self->{trial}; 76 $self->transport_error (transport_error => "switched connections")
77 if $self->{transport};
78
124 delete $self->{next_connect}; 79 delete $self->{connect_w};
80 delete $self->{connect_to};
125 81
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; 82 $self->{transport} = $transport;
83
84 my $transport_send = $transport->can ("send");
85
86 $self->{send} = sub {
87 $transport_send->($transport, $_[0]);
88 };
89
90 AnyEvent::MP::Kernel::_inject_nodeevent ($self, 1);
137 91
138 $transport->send ($_) 92 $transport->send ($_)
139 for @{ delete $self->{queue} || [] }; 93 for @{ delete $self->{queue} || [] };
140} 94}
141 95
142sub clr_transport {
143 my ($self) = @_;
144
145 delete $self->{transport};
146
147 $self->connect;
148}
149
150sub connect { 96sub connect {
151 my ($self) = @_; 97 my ($self) = @_;
152 98
153 Scalar::Util::weaken $self; 99 Scalar::Util::weaken $self;
154 100
155 unless (exists $self->{n_noderef}) { 101 $self->{connect_to} ||= AE::timer
156 return if $self->{n_noderef_}++; 102 $AnyEvent::MP::Config::CFG{monitor_timeout} || $AnyEvent::MP::Kernel::MONITOR_TIMEOUT,
157 (AnyEvent::MP::Node::normalise_noderef ($self->{noderef}))->cb (sub { 103 0,
158 $self or return; 104 sub {
159 delete $self->{n_noderef_}; 105 $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 $self->connect;
168 }); 106 };
169 return; 107
108 unless ($self->{connect_w}) {
109 my @endpoints;
110 my %trial;
111
112 $self->{connect_w} = AE::timer
113 0,
114 $AnyEvent::MP::Config::CFG{connect_interval} || $AnyEvent::MP::Kernel::CONNECT_INTERVAL,
115 sub {
116 @endpoints = split /,/, $self->{noderef}
117 unless @endpoints;
118
119 my $endpoint = shift @endpoints;
120
121 $trial{$endpoint} ||= do {
122 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint
123 or return $AnyEvent::MP::Kernel::WARN->("$self->{noderef}: not a resolved node reference.");
124
125 AnyEvent::MP::Transport::mp_connect
126 $host, $port,
127 sub { delete $trial{$endpoint} }
128 ;
129 };
130 }
131 ;
170 } 132 }
133}
171 134
172 $self->{retry} ||= [split /,/, $self->{n_noderef}]; 135sub kill {
136 my ($self, $port, @reason) = @_;
173 137
174 my $endpoint = shift @{ $self->{retry} }; 138 $self->send (["", kil => $port, @reason]);
139}
175 140
176 if (defined $endpoint) { 141sub monitor {
177 $self->{trial}{$endpoint} ||= do { 142 my ($self, $portid, $cb) = @_;
178 my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint 143
144 my $list = $self->{lmon}{$portid} ||= [];
145
146 $self->send (["", mon1 => $portid])
147 unless @$list;
148
149 push @$list, $cb;
150}
151
152sub unmonitor {
153 my ($self, $portid, $cb) = @_;
154
155 my $list = $self->{lmon}{$portid}
179 or return; 156 or return;
180 157
181 my ($w, $g); 158 @$list = grep $_ != $cb, @$list;
182 159
183 $w = AE::timer $AnyEvent::MP::Base::CONNECT_TIMEOUT, 0, sub { 160 unless (@$list) {
184 delete $self->{trial}{$endpoint}; 161 $self->send (["", mon0 => $portid]);
185 }; 162 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 } 163 }
164}
200 165
201 $self->{next_connect} = AE::timer $AnyEvent::MP::Base::CONNECT_INTERVAL, 0, sub { 166package AnyEvent::MP::Node::Direct;
202 $self->connect; 167
168use base "AnyEvent::MP::Node::External";
169
170package AnyEvent::MP::Node::Indirect;
171
172use base "AnyEvent::MP::Node::Direct";
173
174sub connect {
175 my ($self) = @_;
176
177 $self->transport_error (transport_error => $self->{noderef}, "unable to connect to indirect node");
178}
179
180package AnyEvent::MP::Node::Self;
181
182use base "AnyEvent::MP::Node";
183
184sub connect {
185 # we are trivially connected
186}
187
188sub transport_reset {
189 my ($self) = @_;
190
191 Scalar::Util::weaken $self;
192
193 $self->{send} = sub {
194 local $AnyEvent::MP::Kernel::SRCNODE = $self;
195 AnyEvent::MP::Kernel::_inject (@{ $_[0] });
203 }; 196 };
204} 197}
205 198
206package AnyEvent::MP::Node::Self; 199sub kill {
200 my ($self, $port, @reason) = @_;
207 201
208use base "AnyEvent::MP::Node"; 202 delete $AnyEvent::MP::Kernel::PORT{$port};
203 delete $AnyEvent::MP::Kernel::PORT_DATA{$port};
209 204
210sub set_transport { 205 my $mon = delete $AnyEvent::MP::Kernel::LMON{$port}
211 die "FATAL error, set_transport was called"; 206 or !@reason
212} 207 or $AnyEvent::MP::Kernel::WARN->("unmonitored local port $port died with reason: @reason");
213 208
214sub send { 209 $_->(@reason) for values %$mon;
215 AnyEvent::MP::Base::_inject ($_[1]); 210}
211
212sub monitor {
213 my ($self, $portid, $cb) = @_;
214
215 return $cb->(no_such_port => "cannot monitor nonexistent port")
216 unless exists $AnyEvent::MP::Kernel::PORT{$portid};
217
218 $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0} = $cb;
219}
220
221sub unmonitor {
222 my ($self, $portid, $cb) = @_;
223
224 delete $AnyEvent::MP::Kernel::LMON{$portid}{$cb+0};
216} 225}
217 226
218=head1 SEE ALSO 227=head1 SEE ALSO
219 228
220L<AnyEvent>. 229L<AnyEvent::MP>.
221 230
222=head1 AUTHOR 231=head1 AUTHOR
223 232
224 Marc Lehmann <schmorp@schmorp.de> 233 Marc Lehmann <schmorp@schmorp.de>
225 http://home.schmorp.de/ 234 http://home.schmorp.de/

Diff Legend

– Removed lines
+ Added lines
< Changed lines
> Changed lines