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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::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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our $DEFAULT_PORT = "4040"; |
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|
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sub normalise_noderef($) { |
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my ($noderef) = @_; |
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|
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my $cv = AE::cv; |
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my @res; |
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|
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$cv->begin (sub { |
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my %seen; |
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my @refs; |
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for (sort { $a->[0] <=> $b->[0] } @res) { |
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push @refs, $_->[1] unless $seen{$_->[1]}++ |
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} |
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shift->send (join ",", @refs); |
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}); |
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|
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$noderef = $DEFAULT_PORT unless length $noderef; |
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|
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my $idx; |
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for my $t (split /,/, $noderef) { |
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my $pri = ++$idx; |
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|
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#TODO: this should be outside normalise_noderef and in become_public |
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if ($t =~ /^\d*$/) { |
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require POSIX; |
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my $nodename = (POSIX::uname ())[1]; |
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|
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$cv->begin; |
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AnyEvent::Socket::resolve_sockaddr $nodename, $t || "aemp=$DEFAULT_PORT", "tcp", 0, undef, sub { |
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for (@_) { |
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my ($service, $host) = AnyEvent::Socket::unpack_sockaddr $_->[3]; |
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push @res, [ |
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$pri += 1e-5, |
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AnyEvent::Socket::format_hostport AnyEvent::Socket::format_address $host, $service |
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]; |
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} |
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$cv->end; |
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}; |
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|
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# my (undef, undef, undef, undef, @ipv4) = gethostbyname $nodename; |
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# |
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# for (@ipv4) { |
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# push @res, [ |
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# $pri, |
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# AnyEvent::Socket::format_hostport AnyEvent::Socket::format_address $_, $t || $DEFAULT_PORT, |
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# ]; |
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# } |
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} else { |
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my ($host, $port) = AnyEvent::Socket::parse_hostport $t, "aemp=$DEFAULT_PORT" |
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or Carp::croak "$t: unparsable transport descriptor"; |
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|
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$cv->begin; |
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AnyEvent::Socket::resolve_sockaddr $host, $port, "tcp", 0, undef, sub { |
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for (@_) { |
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my ($service, $host) = AnyEvent::Socket::unpack_sockaddr $_->[3]; |
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push @res, [ |
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$pri += 1e-5, |
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AnyEvent::Socket::format_hostport AnyEvent::Socket::format_address $host, $service |
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]; |
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} |
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$cv->end; |
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} |
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} |
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} |
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|
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$cv->end; |
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|
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$cv |
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} |
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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 set_transport { |
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my ($self, $transport) = @_; |
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|
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delete $self->{trial}; |
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delete $self->{next_connect}; |
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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, drop queue |
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delete $self->{queue}; |
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#TODO: "DOWN" |
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} |
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|
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$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 $self->{queue} || [] }; |
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} |
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|
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sub clr_transport { |
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my ($self) = @_; |
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|
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delete $self->{transport}; |
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|
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$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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unless (exists $self->{n_noderef}) { |
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return if $self->{n_noderef_}++; |
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(AnyEvent::MP::Node::normalise_noderef ($self->{noderef}))->cb (sub { |
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$self or return; |
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delete $self->{n_noderef_}; |
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my $noderef = shift->recv; |
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|
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$self->{n_noderef} = $noderef; |
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|
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$AnyEvent::MP::Base::NODE{$_} = $self |
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for split /,/, $noderef; |
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|
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$self->connect; |
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}); |
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return; |
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} |
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|
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$self->{retry} ||= [split /,/, $self->{n_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 $endpoint |
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or return; |
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|
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my ($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 $self->{retry}; |
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} |
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|
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$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::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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die "FATAL error, set_transport was called"; |
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} |
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|
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sub send { |
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AnyEvent::MP::Base::_inject ($_[1]); |
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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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|
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1 |
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