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