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=head1 NAME |
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|
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AnyEvent::MP::Node - a single processing node (CPU/process...) |
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|
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=head1 SYNOPSIS |
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|
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use AnyEvent::MP::Node; |
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|
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=head1 DESCRIPTION |
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|
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=cut |
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|
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package AnyEvent::MP::Node; |
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|
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use common::sense; |
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|
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use AE (); |
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use AnyEvent::Util (); |
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use AnyEvent::Socket (); |
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|
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use AnyEvent::MP::Transport (); |
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|
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use base Exporter::; |
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|
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our $VERSION = '0.0'; |
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|
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sub new { |
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my ($class, $noderef) = @_; |
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|
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bless { noderef => $noderef }, $class |
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} |
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|
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package AnyEvent::MP::Node::Direct; |
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|
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use base "AnyEvent::MP::Node"; |
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|
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sub send { |
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my ($self, $msg) = @_; |
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|
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if ($self->{transport}) { |
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$self->{transport}->send ($msg); |
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} elsif ($self->{queue}) { |
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push @{ $self->{queue} }, $msg; |
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} else { |
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$self->{queue} = [$msg]; |
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$self->connect; |
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} |
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} |
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|
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sub kill { |
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my ($self, $port, @reason) = @_; |
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|
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$self->send (["", kil => $port, @reason]); |
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} |
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|
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sub monitor { |
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my ($self, $portid, $cb) = @_; |
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|
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return $cb->(transport_error => "node unreachable") |
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if $self->{failed}; |
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|
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my $list = $self->{lmon}{$portid} ||= []; |
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|
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$self->send (["", mon1 => $portid]) |
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unless @$list; |
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|
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push @$list, $cb; |
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} |
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|
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sub unmonitor { |
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my ($self, $portid, $cb) = @_; |
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|
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my $list = $self->{lmon}{$portid} |
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or return; |
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|
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@$list = grep $_ != $cb, @$list; |
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|
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unless (@$list) { |
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$self->send (["", mon0 => $portid]); |
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delete $self->{monitor}{$portid}; |
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} |
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} |
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|
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sub set_transport { |
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my ($self, $transport) = @_; |
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|
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$self->clr_transport |
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if $self->{transport}; |
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|
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if ( |
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exists $self->{remote_uniq} |
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&& $self->{remote_uniq} ne $transport->{remote_uniq} |
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) { |
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# uniq changed, different node |
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$self->fail (transport_error => $self->{noderef}, "node was restarted"); |
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} |
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|
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delete $self->{trial}; |
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delete $self->{next_connect}; |
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delete $self->{failed}; |
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|
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$self->{remote_uniq} = $transport->{remote_uniq}; |
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$self->{transport} = $transport; |
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|
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$transport->send ($_) |
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for @{ delete $self->{queue} || [] }; |
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} |
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|
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sub fail { |
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my ($self, @reason) = @_; |
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|
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delete $self->{queue}; |
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|
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$self->{failed} = 1; |
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|
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if (my $mon = delete $self->{lmon}) { |
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$_->(@reason) for map @$_, values %$mon; |
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} |
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} |
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|
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sub clr_transport { |
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my ($self, @reason) = @_; |
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|
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delete $self->{transport}; |
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$self->connect; |
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} |
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|
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sub connect { |
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my ($self) = @_; |
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|
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Scalar::Util::weaken $self; |
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|
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$self->{retry} ||= [split /,/, $self->{noderef}]; |
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|
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my $endpoint = shift @{ $self->{retry} }; |
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|
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if (defined $endpoint) { |
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$self->{trial}{$endpoint} ||= do { |
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my ($host, $port) = AnyEvent::Socket::parse_hostport $endpoint |
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or return $AnyEvent::MP::Base::WARN->("$self->{noderef}: not a resolved node reference."); |
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|
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my ($w, $g); |
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|
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$w = AE::timer $AnyEvent::MP::Base::CONNECT_TIMEOUT, 0, sub { |
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delete $self->{trial}{$endpoint}; |
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}; |
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$g = AnyEvent::MP::Transport::mp_connect |
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$host, $port, |
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sub { |
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delete $self->{trial}{$endpoint} |
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unless @_; |
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$g = shift; |
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}; |
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; |
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|
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[$w, \$g] |
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}; |
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} else { |
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delete $self->{retry}; |
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$self->fail (transport_error => $self->{noderef}, "unable to connect"); |
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} |
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|
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$self->{next_connect} = AE::timer $AnyEvent::MP::Base::CONNECT_INTERVAL, 0, sub { |
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$self->connect; |
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}; |
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} |
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|
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package AnyEvent::MP::Node::Slave; |
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|
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use base "AnyEvent::MP::Node::Direct"; |
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|
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sub connect { |
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my ($self) = @_; |
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|
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$self->fail (transport_error => $self->{noderef}, "unable to connect to slave node"); |
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} |
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|
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package AnyEvent::MP::Node::Self; |
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|
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use base "AnyEvent::MP::Node"; |
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|
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sub set_transport { |
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Carp::confess "FATAL error, set_transport was called on local node"; |
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} |
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|
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sub send { |
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local $AnyEvent::MP::Base::SRCNODE = $_[0]; |
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AnyEvent::MP::Base::_inject (@{ $_[1] }); |
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} |
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|
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sub kill { |
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my ($self, $port, @reason) = @_; |
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|
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delete $AnyEvent::MP::Base::PORT{$port}; |
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delete $AnyEvent::MP::Base::PORT_DATA{$port}; |
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|
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my $mon = delete $AnyEvent::MP::Base::LMON{$port} |
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or !@reason |
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or $AnyEvent::MP::Base::WARN->("unmonitored local port $port died with reason: @reason"); |
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|
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$_->(@reason) for values %$mon; |
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} |
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|
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sub monitor { |
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my ($self, $portid, $cb) = @_; |
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|
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return $cb->() |
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unless exists $AnyEvent::MP::Base::PORT{$portid}; |
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|
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$AnyEvent::MP::Base::LMON{$portid}{$cb+0} = $cb; |
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} |
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|
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sub unmonitor { |
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my ($self, $portid, $cb) = @_; |
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|
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delete $AnyEvent::MP::Base::LMON{$portid}{$cb+0}; |
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} |
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|
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=head1 SEE ALSO |
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|
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L<AnyEvent>. |
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|
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=head1 AUTHOR |
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|
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Marc Lehmann <schmorp@schmorp.de> |
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http://home.schmorp.de/ |
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|
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=cut |
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1 |
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