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=head1 NAME |
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|
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AnyEvent::MP::Base - basis for AnyEvent::MP and Coro::MP |
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|
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=head1 SYNOPSIS |
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|
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# use AnyEvent::MP or Coro::MP instead |
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|
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=head1 DESCRIPTION |
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|
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This module provides most of the basic functionality of AnyEvent::MP, |
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exposed through higher level interfaces such as L<AnyEvent::MP> and |
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L<Coro::MP>. |
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|
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=head1 GLOBALS |
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|
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=over 4 |
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|
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=cut |
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|
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package AnyEvent::MP::Base; |
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|
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use AnyEvent::MP::Node; |
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use AnyEvent::MP::Transport; |
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|
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use common::sense; |
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|
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use Carp (); |
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|
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use AE (); |
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|
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use base "Exporter"; |
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|
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our $VERSION = '0.01'; |
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our @EXPORT = qw( |
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NODE $NODE snd del _any_ |
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become_slave become_public |
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); |
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|
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our $DEFAULT_SECRET; |
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|
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our $CONNECT_INTERVAL = 5; # new connect every 5s, at least |
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our $CONNECT_TIMEOUT = 30; # includes handshake |
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|
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=item $AnyEvent::MP::Base::WARN |
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|
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This value is called with an error or warning message, when e.g. a connection |
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could not be created, authorisation failed and so on. |
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|
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The default simply logs the message to STDERR. |
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|
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=cut |
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|
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our $WARN = sub { |
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warn "$_[0]\n"; |
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}; |
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|
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sub nonce($) { |
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my $nonce; |
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|
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if (open my $fh, "</dev/urandom") { |
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sysread $fh, $nonce, $_[0]; |
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} else { |
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# shit... |
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our $nonce_init; |
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unless ($nonce_init++) { |
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srand time ^ $$ ^ unpack "%L*", qx"ps -edalf" . qx"ipconfig /all"; |
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} |
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|
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$nonce = join "", map +(chr rand 256), 1 .. $_[0] |
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} |
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|
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$nonce |
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} |
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|
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sub default_secret { |
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unless (defined $DEFAULT_SECRET) { |
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if (open my $fh, "<$ENV{HOME}/.aemp-secret") { |
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sysread $fh, $DEFAULT_SECRET, -s $fh; |
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} else { |
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$DEFAULT_SECRET = nonce 32; |
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} |
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} |
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|
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$DEFAULT_SECRET |
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} |
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|
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our $UNIQ = sprintf "%x.%x", $$, time; # per-process/node unique cookie |
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our $ID = "a"; |
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our $PUBLIC = 0; |
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our $NODE = $$; |
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our $PORT; |
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|
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our %NODE; # node id to transport mapping, or "undef", for local node |
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our %PORT; # local ports |
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|
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our %RMON; # local ports monitored by remote nodes ($RMON{noderef}{portid} == cb) |
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our %LMON; # monitored _local_ ports |
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|
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our %WKP; |
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our %LISTENER; # local transports |
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|
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our $SRCNODE; # holds the sending node during _inject |
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|
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sub NODE() { $NODE } |
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|
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sub _ANY_() { 1 } |
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sub _any_() { \&_ANY_ } |
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|
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sub _inject { |
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&{ $PORT{+shift} or return }; |
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} |
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|
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sub add_node { |
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my ($noderef) = @_; |
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|
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return $NODE{$noderef} |
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if exists $NODE{$noderef}; |
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|
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for (split /,/, $noderef) { |
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return $NODE{$noderef} = $NODE{$_} |
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if exists $NODE{$_}; |
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} |
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|
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# for indirect sends, use a different class |
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my $node = new AnyEvent::MP::Node::Direct $noderef; |
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|
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$NODE{$_} = $node |
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for $noderef, split /,/, $noderef; |
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|
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$node |
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} |
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|
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sub snd(@) { |
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my ($noderef, $port) = split /#/, shift, 2; |
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|
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($NODE{$noderef} || add_node $noderef) |
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->send ([$port, @_]); |
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} |
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|
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sub del($) { |
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my ($noderef, $port) = split /#/, shift, 2; |
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|
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delete $PORT{$port}; |
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|
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my $mon = delete $LMON{$port} |
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or return; |
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|
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$_->() for values %$mon; |
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} |
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|
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sub become_public { |
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return if $PUBLIC; |
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|
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my $noderef = join ",", @_; |
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my @args = @_; |
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|
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$NODE = (AnyEvent::MP::Node::normalise_noderef $noderef)->recv; |
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|
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for my $t (split /,/, $NODE) { |
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$NODE{$t} = $NODE{""}; |
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|
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my ($host, $port) = AnyEvent::Socket::parse_hostport $t; |
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|
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$LISTENER{$t} = AnyEvent::MP::Transport::mp_server $host, $port, |
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@args, |
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sub { |
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my ($tp) = @_; |
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|
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# TODO: urgs |
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my $node = add_node $tp->{remote_node}; |
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$node->{trial}{accept} = $tp; |
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}, |
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; |
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} |
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|
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$PUBLIC = 1; |
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} |
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|
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############################################################################# |
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# self node code |
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|
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our %node_req = ( |
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# monitoring |
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mon0 => sub { # disable monitoring |
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my $portid = shift; |
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my $node = $SRCNODE; |
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$NODE{""}->unmonitor ($portid, delete $node->{rmon}{$portid}); |
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}, |
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mon1 => sub { # enable monitoring |
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my $portid = shift; |
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my $node = $SRCNODE; |
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$NODE{""}->monitor ($portid, $node->{rmon}{$portid} = sub { |
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$node->send (["", exit => $portid]); |
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}); |
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}, |
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exit => sub { |
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my $cbs = delete $SRCNODE->{lmon}{$_[0]} |
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or return; |
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|
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$_->() for @$cbs; |
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}, |
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|
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# well-known-port lookup |
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wkp => sub { |
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my $wkname = shift; |
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snd @_, $WKP{$wkname}; |
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}, |
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|
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# relay message to another node / generic echo |
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relay => sub { |
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&snd; |
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}, |
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|
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# random garbage |
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eval => sub { |
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my @res = eval shift; |
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snd @_, "$@", @res if @_; |
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}, |
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time => sub { |
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snd @_, AE::time; |
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}, |
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devnull => sub { |
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# |
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}, |
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); |
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|
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$NODE{""} = new AnyEvent::MP::Node::Self noderef => $NODE; |
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$PORT{""} = sub { &{ $node_req{+shift} or return } }; |
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|
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=back |
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|
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=head1 SEE ALSO |
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|
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L<AnyEvent::MP>. |
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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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