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1.1 |
=head1 NAME |
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1.3 |
AnyEvent::MP::Kernel - the actual message passing kernel |
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1.1 |
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=head1 SYNOPSIS |
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1.3 |
use AnyEvent::MP::Kernel; |
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1.1 |
|
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1.106 |
$AnyEvent::MP::Kernel::SRCNODE # contains msg origin node id, for debugging |
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snd_to_func $node, $func, @args # send msg to function |
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snd_on $node, @msg # snd message again (relay) |
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eval_on $node, $string[, @reply] # execute perl code on another node |
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node_is_up $nodeid # return true if a node is connected |
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@nodes = up_nodes # return a list of all connected nodes |
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$guard = mon_nodes $callback->($node, $is_up, @reason) # connections up/downs |
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1.1 |
=head1 DESCRIPTION |
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1.106 |
This module implements most of the inner workings of AnyEvent::MP. It |
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offers mostly lower-level functions that deal with network connectivity |
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and special requests. |
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You normally interface with AnyEvent::MP through a higher level interface |
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such as L<AnyEvent::MP> and L<Coro::MP>, although there is nothing wrong |
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with using the functions from this module. |
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1.3 |
|
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=head1 GLOBALS AND FUNCTIONS |
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1.1 |
|
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=over 4 |
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=cut |
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package AnyEvent::MP::Kernel; |
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use common::sense; |
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use Carp (); |
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1.79 |
use AnyEvent (); |
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use Guard (); |
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1.1 |
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use AnyEvent::MP::Node; |
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use AnyEvent::MP::Transport; |
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use base "Exporter"; |
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1.106 |
# for re-export in AnyEvent::MP and Coro::MP |
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our @EXPORT_API = qw( |
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NODE $NODE |
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configure |
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node_of port_is_local |
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snd kil |
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db_set db_del |
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db_mon db_family db_keys db_values |
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); |
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our @EXPORT_OK = ( |
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# these are internal |
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qw( |
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%NODE %PORT %PORT_DATA $UNIQ $RUNIQ $ID |
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add_node load_func |
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), |
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@EXPORT_API, |
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1.71 |
); |
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1.1 |
our @EXPORT = qw( |
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1.106 |
snd_to_func snd_on eval_on |
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port_is_local |
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1.46 |
up_nodes mon_nodes node_is_up |
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1.1 |
); |
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1.118 |
our @CARP_NOT = (AnyEvent::MP::); |
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1.6 |
sub load_func($) { |
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my $func = $_[0]; |
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unless (defined &$func) { |
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my $pkg = $func; |
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do { |
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$pkg =~ s/::[^:]+$// |
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1.63 |
or return sub { die "unable to resolve function '$func'" }; |
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1.60 |
|
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local $@; |
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1.61 |
unless (eval "require $pkg; 1") { |
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my $error = $@; |
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$error =~ /^Can't locate .*.pm in \@INC \(/ |
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or return sub { die $error }; |
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} |
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1.6 |
} until defined &$func; |
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} |
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\&$func |
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} |
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1.78 |
my @alnum = ('0' .. '9', 'A' .. 'Z', 'a' .. 'z'); |
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1.1 |
sub nonce($) { |
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1.78 |
join "", map chr rand 256, 1 .. $_[0] |
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1.1 |
} |
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1.78 |
sub nonce62($) { |
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join "", map $alnum[rand 62], 1 .. $_[0] |
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1.1 |
} |
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1.20 |
our $CONFIG; # this node's configuration |
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1.104 |
our $SECURE; |
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1.21 |
|
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1.64 |
our $RUNIQ; # remote uniq value |
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our $UNIQ; # per-process/node unique cookie |
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our $NODE; |
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our $ID = "a"; |
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1.1 |
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our %NODE; # node id to transport mapping, or "undef", for local node |
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our (%PORT, %PORT_DATA); # local ports |
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1.21 |
our %RMON; # local ports monitored by remote nodes ($RMON{nodeid}{portid} == cb) |
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1.1 |
our %LMON; # monitored _local_ ports |
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1.111 |
#our $GLOBAL; # true if node is a global ("directory") node |
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1.85 |
our %BINDS; |
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our $BINDS; # our listeners, as arrayref |
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1.1 |
|
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1.76 |
our $SRCNODE; # holds the sending node _object_ during _inject |
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1.111 |
our $GLOBAL; # true when this is a global node (only set by AnyEvent::MP::Global) |
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1.1 |
|
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1.106 |
# initialise names for non-networked operation |
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{ |
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1.78 |
# ~54 bits, for local port names, lowercase $ID appended |
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1.106 |
my $now = AE::now; |
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1.112 |
$UNIQ = |
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1.106 |
(join "", |
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map $alnum[$_], |
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$$ / 62 % 62, |
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$$ % 62, |
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(int $now ) % 62, |
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(int $now * 100) % 62, |
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(int $now * 10000) % 62, |
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) . nonce62 4 |
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; |
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1.78 |
|
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# ~59 bits, for remote port names, one longer than $UNIQ and uppercase at the end to avoid clashes |
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$RUNIQ = nonce62 10; |
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$RUNIQ =~ s/(.)$/\U$1/; |
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1.106 |
$NODE = ""; |
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1.64 |
} |
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1.1 |
sub NODE() { |
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$NODE |
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} |
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sub node_of($) { |
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1.21 |
my ($node, undef) = split /#/, $_[0], 2; |
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1.1 |
|
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1.21 |
$node |
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1.1 |
} |
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1.17 |
BEGIN { |
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*TRACE = $ENV{PERL_ANYEVENT_MP_TRACE} |
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? sub () { 1 } |
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: sub () { 0 }; |
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} |
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1.1 |
|
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1.42 |
our $DELAY_TIMER; |
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our @DELAY_QUEUE; |
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1.97 |
our $delay_run = sub { |
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1.55 |
(shift @DELAY_QUEUE or return undef $DELAY_TIMER)->() while 1; |
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1.97 |
}; |
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1.42 |
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sub delay($) { |
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push @DELAY_QUEUE, shift; |
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1.97 |
$DELAY_TIMER ||= AE::timer 0, 0, $delay_run; |
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1.42 |
} |
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1.96 |
=item $AnyEvent::MP::Kernel::SRCNODE |
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During execution of a message callback, this variable contains the node ID |
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of the origin node. |
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The main use of this variable is for debugging output - there are probably |
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very few other cases where you need to know the source node ID. |
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=cut |
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1.1 |
sub _inject { |
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1.117 |
warn "RCV $SRCNODE -> " . eval { JSON::XS->new->encode (\@_) } . "\n" if TRACE && @_; |
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1.1 |
&{ $PORT{+shift} or return }; |
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} |
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1.20 |
# this function adds a node-ref, so you can send stuff to it |
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# it is basically the central routing component. |
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1.1 |
sub add_node { |
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1.107 |
$NODE{$_[0]} || do { |
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my ($node) = @_; |
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1.1 |
|
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1.107 |
length $node |
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or Carp::croak "'undef' or the empty string are not valid node/port IDs"; |
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1.93 |
|
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1.107 |
# registers itself in %NODE |
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new AnyEvent::MP::Node::Remote $node |
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} |
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1.13 |
} |
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1.1 |
sub snd(@) { |
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1.21 |
my ($nodeid, $portid) = split /#/, shift, 2; |
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1.1 |
|
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1.117 |
warn "SND $nodeid <- " . eval { JSON::XS->new->encode ([$portid, @_]) } . "\n" if TRACE && @_; |
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1.1 |
|
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1.21 |
($NODE{$nodeid} || add_node $nodeid) |
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1.2 |
->{send} (["$portid", @_]); |
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1.1 |
} |
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1.17 |
sub port_is_local($) { |
217 |
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1.21 |
my ($nodeid, undef) = split /#/, $_[0], 2; |
218 |
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1.17 |
|
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1.106 |
$nodeid eq $NODE |
220 |
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1.17 |
} |
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1.18 |
=item snd_to_func $node, $func, @args |
223 |
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1.11 |
|
224 |
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1.21 |
Expects a node ID and a name of a function. Asynchronously tries to call |
225 |
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1.11 |
this function with the given arguments on that node. |
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1.20 |
This function can be used to implement C<spawn>-like interfaces. |
228 |
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1.11 |
|
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=cut |
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231 |
root |
1.18 |
sub snd_to_func($$;@) { |
232 |
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1.21 |
my $nodeid = shift; |
233 |
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1.11 |
|
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1.41 |
# on $NODE, we artificially delay... (for spawn) |
235 |
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# this is very ugly - maybe we should simply delay ALL messages, |
236 |
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# to avoid deep recursion issues. but that's so... slow... |
237 |
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1.45 |
$AnyEvent::MP::Node::Self::DELAY = 1 |
238 |
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if $nodeid ne $NODE; |
239 |
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1.71 |
($NODE{$nodeid} || add_node $nodeid)->{send} (["", @_]); |
241 |
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1.11 |
} |
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243 |
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1.18 |
=item snd_on $node, @msg |
244 |
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Executes C<snd> with the given C<@msg> (which must include the destination |
246 |
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port) on the given node. |
247 |
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248 |
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=cut |
249 |
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250 |
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sub snd_on($@) { |
251 |
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my $node = shift; |
252 |
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snd $node, snd => @_; |
253 |
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} |
254 |
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255 |
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1.29 |
=item eval_on $node, $string[, @reply] |
256 |
root |
1.18 |
|
257 |
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1.29 |
Evaluates the given string as Perl expression on the given node. When |
258 |
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@reply is specified, then it is used to construct a reply message with |
259 |
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C<"$@"> and any results from the eval appended. |
260 |
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1.18 |
|
261 |
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=cut |
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263 |
root |
1.29 |
sub eval_on($$;@) { |
264 |
root |
1.18 |
my $node = shift; |
265 |
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snd $node, eval => @_; |
266 |
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} |
267 |
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268 |
root |
1.1 |
sub kil(@) { |
269 |
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1.21 |
my ($nodeid, $portid) = split /#/, shift, 2; |
270 |
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1.1 |
|
271 |
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length $portid |
272 |
root |
1.21 |
or Carp::croak "$nodeid#$portid: killing a node port is not allowed, caught"; |
273 |
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1.1 |
|
274 |
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1.21 |
($NODE{$nodeid} || add_node $nodeid) |
275 |
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1.1 |
->kill ("$portid", @_); |
276 |
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} |
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############################################################################# |
279 |
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1.6 |
# node monitoring and info |
280 |
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1.3 |
|
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1.106 |
=item $bool = node_is_up $nodeid |
282 |
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1.13 |
|
283 |
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Returns true if the given node is "up", that is, the kernel thinks it has |
284 |
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a working connection to it. |
285 |
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286 |
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1.107 |
More precisely, if the node is up, returns C<1>. If the node is currently |
287 |
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connecting or otherwise known but not connected, returns C<0>. If nothing |
288 |
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is known about the node, returns C<undef>. |
289 |
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1.13 |
|
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=cut |
291 |
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292 |
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sub node_is_up($) { |
293 |
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1.107 |
($_[0] eq $NODE) || ($NODE{$_[0]} or return)->{transport} |
294 |
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1.13 |
? 1 : 0 |
295 |
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} |
296 |
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|
297 |
root |
1.106 |
=item @nodes = up_nodes |
298 |
root |
1.3 |
|
299 |
root |
1.26 |
Return the node IDs of all nodes that are currently connected (excluding |
300 |
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the node itself). |
301 |
root |
1.3 |
|
302 |
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=cut |
303 |
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304 |
root |
1.49 |
sub up_nodes() { |
305 |
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1.26 |
map $_->{id}, grep $_->{transport}, values %NODE |
306 |
root |
1.3 |
} |
307 |
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|
308 |
root |
1.21 |
=item $guard = mon_nodes $callback->($nodeid, $is_up, @reason) |
309 |
root |
1.3 |
|
310 |
root |
1.27 |
Registers a callback that is called each time a node goes up (a connection |
311 |
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is established) or down (the connection is lost). |
312 |
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1.3 |
|
313 |
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Node up messages can only be followed by node down messages for the same |
314 |
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node, and vice versa. |
315 |
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|
316 |
root |
1.71 |
Note that monitoring a node is usually better done by monitoring its node |
317 |
root |
1.27 |
port. This function is mainly of interest to modules that are concerned |
318 |
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about the network topology and low-level connection handling. |
319 |
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|
320 |
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Callbacks I<must not> block and I<should not> send any messages. |
321 |
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|
322 |
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The function returns an optional guard which can be used to unregister |
323 |
root |
1.3 |
the monitoring callback again. |
324 |
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|
325 |
root |
1.46 |
Example: make sure you call function C<newnode> for all nodes that are up |
326 |
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or go up (and down). |
327 |
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|
328 |
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newnode $_, 1 for up_nodes; |
329 |
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mon_nodes \&newnode; |
330 |
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331 |
root |
1.3 |
=cut |
332 |
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333 |
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our %MON_NODES; |
334 |
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|
335 |
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sub mon_nodes($) { |
336 |
|
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my ($cb) = @_; |
337 |
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|
338 |
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$MON_NODES{$cb+0} = $cb; |
339 |
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|
340 |
root |
1.90 |
defined wantarray |
341 |
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and Guard::guard { delete $MON_NODES{$cb+0} } |
342 |
root |
1.3 |
} |
343 |
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|
344 |
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sub _inject_nodeevent($$;@) { |
345 |
root |
1.16 |
my ($node, $up, @reason) = @_; |
346 |
root |
1.3 |
|
347 |
root |
1.107 |
AE::log 7 => "$node->{id} is " . ($up ? "up." : "down (@reason)."); |
348 |
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|
349 |
root |
1.3 |
for my $cb (values %MON_NODES) { |
350 |
root |
1.21 |
eval { $cb->($node->{id}, $up, @reason); 1 } |
351 |
root |
1.98 |
or AE::log die => $@; |
352 |
root |
1.3 |
} |
353 |
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} |
354 |
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|
355 |
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############################################################################# |
356 |
root |
1.1 |
# self node code |
357 |
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|
358 |
root |
1.67 |
sub _kill { |
359 |
|
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my $port = shift; |
360 |
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|
361 |
|
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delete $PORT{$port} |
362 |
|
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or return; # killing nonexistent ports is O.K. |
363 |
|
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delete $PORT_DATA{$port}; |
364 |
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|
365 |
|
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my $mon = delete $LMON{$port} |
366 |
|
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or !@_ |
367 |
root |
1.98 |
or AE::log die => "unmonitored local port $port died with reason: @_"; |
368 |
root |
1.67 |
|
369 |
|
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$_->(@_) for values %$mon; |
370 |
|
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} |
371 |
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|
372 |
|
|
sub _monitor { |
373 |
|
|
return $_[2](no_such_port => "cannot monitor nonexistent port", "$NODE#$_[1]") |
374 |
|
|
unless exists $PORT{$_[1]}; |
375 |
|
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|
376 |
|
|
$LMON{$_[1]}{$_[2]+0} = $_[2]; |
377 |
|
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} |
378 |
|
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|
379 |
|
|
sub _unmonitor { |
380 |
root |
1.68 |
delete $LMON{$_[1]}{$_[2]+0} |
381 |
|
|
if exists $LMON{$_[1]}; |
382 |
root |
1.67 |
} |
383 |
|
|
|
384 |
root |
1.83 |
sub _secure_check { |
385 |
root |
1.104 |
$SECURE |
386 |
root |
1.105 |
and die "remote execution not allowed\n"; |
387 |
root |
1.83 |
} |
388 |
|
|
|
389 |
root |
1.107 |
our %NODE_REQ; |
390 |
|
|
|
391 |
|
|
%NODE_REQ = ( |
392 |
|
|
# "mproto" - monitoring protocol |
393 |
root |
1.1 |
|
394 |
|
|
# monitoring |
395 |
root |
1.65 |
mon0 => sub { # stop monitoring a port for another node |
396 |
root |
1.1 |
my $portid = shift; |
397 |
root |
1.96 |
_unmonitor undef, $portid, delete $NODE{$SRCNODE}{rmon}{$portid}; |
398 |
root |
1.1 |
}, |
399 |
root |
1.65 |
mon1 => sub { # start monitoring a port for another node |
400 |
root |
1.1 |
my $portid = shift; |
401 |
root |
1.96 |
Scalar::Util::weaken (my $node = $NODE{$SRCNODE}); |
402 |
root |
1.67 |
_monitor undef, $portid, $node->{rmon}{$portid} = sub { |
403 |
root |
1.58 |
delete $node->{rmon}{$portid}; |
404 |
root |
1.65 |
$node->send (["", kil0 => $portid, @_]) |
405 |
root |
1.59 |
if $node && $node->{transport}; |
406 |
root |
1.67 |
}; |
407 |
root |
1.1 |
}, |
408 |
root |
1.65 |
# another node has killed a monitored port |
409 |
|
|
kil0 => sub { |
410 |
root |
1.96 |
my $cbs = delete $NODE{$SRCNODE}{lmon}{+shift} |
411 |
root |
1.1 |
or return; |
412 |
|
|
|
413 |
|
|
$_->(@_) for @$cbs; |
414 |
|
|
}, |
415 |
root |
1.107 |
# another node wants to kill a local port |
416 |
|
|
kil1 => \&_kill, |
417 |
root |
1.1 |
|
418 |
root |
1.18 |
# "public" services - not actually public |
419 |
root |
1.1 |
|
420 |
|
|
# relay message to another node / generic echo |
421 |
root |
1.88 |
snd => sub { |
422 |
|
|
&snd |
423 |
root |
1.1 |
}, |
424 |
root |
1.107 |
# ask if a node supports the given request, only works for fixed tags |
425 |
|
|
can => sub { |
426 |
|
|
my $method = shift; |
427 |
|
|
snd @_, exists $NODE_REQ{$method}; |
428 |
|
|
}, |
429 |
root |
1.1 |
|
430 |
root |
1.30 |
# random utilities |
431 |
root |
1.1 |
eval => sub { |
432 |
root |
1.83 |
&_secure_check; |
433 |
root |
1.50 |
my @res = do { package main; eval shift }; |
434 |
root |
1.1 |
snd @_, "$@", @res if @_; |
435 |
|
|
}, |
436 |
|
|
time => sub { |
437 |
root |
1.76 |
snd @_, AE::now; |
438 |
root |
1.1 |
}, |
439 |
|
|
devnull => sub { |
440 |
|
|
# |
441 |
|
|
}, |
442 |
root |
1.15 |
"" => sub { |
443 |
root |
1.27 |
# empty messages are keepalives or similar devnull-applications |
444 |
root |
1.15 |
}, |
445 |
root |
1.1 |
); |
446 |
|
|
|
447 |
root |
1.104 |
# the node port |
448 |
root |
1.107 |
new AnyEvent::MP::Node::Self $NODE; # registers itself in %NODE |
449 |
|
|
|
450 |
root |
1.1 |
$PORT{""} = sub { |
451 |
|
|
my $tag = shift; |
452 |
root |
1.83 |
eval { &{ $NODE_REQ{$tag} ||= do { &_secure_check; load_func $tag } } }; |
453 |
root |
1.98 |
AE::log die => "error processing node message from $SRCNODE: $@" if $@; |
454 |
root |
1.1 |
}; |
455 |
|
|
|
456 |
root |
1.107 |
our $MPROTO = 1; |
457 |
root |
1.84 |
|
458 |
|
|
# tell everybody who connects our nproto |
459 |
|
|
push @AnyEvent::MP::Transport::HOOK_GREET, sub { |
460 |
root |
1.107 |
$_[0]{local_greeting}{mproto} = $MPROTO; |
461 |
root |
1.84 |
}; |
462 |
|
|
|
463 |
root |
1.69 |
############################################################################# |
464 |
root |
1.71 |
# seed management, try to keep connections to all seeds at all times |
465 |
root |
1.69 |
|
466 |
root |
1.71 |
our %SEED_NODE; # seed ID => node ID|undef |
467 |
|
|
our %NODE_SEED; # map node ID to seed ID |
468 |
root |
1.69 |
our %SEED_CONNECT; # $seed => transport_connector | 1=connected | 2=connecting |
469 |
|
|
our $SEED_WATCHER; |
470 |
root |
1.71 |
our $SEED_RETRY; |
471 |
root |
1.111 |
our %GLOBAL_NODE; # global => undef |
472 |
root |
1.69 |
|
473 |
|
|
sub seed_connect { |
474 |
|
|
my ($seed) = @_; |
475 |
|
|
|
476 |
|
|
my ($host, $port) = AnyEvent::Socket::parse_hostport $seed |
477 |
|
|
or Carp::croak "$seed: unparsable seed address"; |
478 |
|
|
|
479 |
root |
1.98 |
AE::log 9 => "trying connect to seed node $seed."; |
480 |
root |
1.69 |
|
481 |
root |
1.71 |
$SEED_CONNECT{$seed} ||= AnyEvent::MP::Transport::mp_connect |
482 |
|
|
$host, $port, |
483 |
|
|
on_greeted => sub { |
484 |
|
|
# called after receiving remote greeting, learn remote node name |
485 |
|
|
|
486 |
|
|
# we rely on untrusted data here (the remote node name) this is |
487 |
|
|
# hopefully ok, as this can at most be used for DOSing, which is easy |
488 |
|
|
# when you can do MITM anyway. |
489 |
|
|
|
490 |
|
|
# if we connect to ourselves, nuke this seed, but make sure we act like a seed |
491 |
|
|
if ($_[0]{remote_node} eq $AnyEvent::MP::Kernel::NODE) { |
492 |
root |
1.72 |
require AnyEvent::MP::Global; # every seed becomes a global node currently |
493 |
root |
1.71 |
delete $SEED_NODE{$seed}; |
494 |
|
|
} else { |
495 |
|
|
$SEED_NODE{$seed} = $_[0]{remote_node}; |
496 |
|
|
$NODE_SEED{$_[0]{remote_node}} = $seed; |
497 |
root |
1.111 |
|
498 |
|
|
# also start global service, in case it isn't running |
499 |
|
|
# since we probably switch conenctions, maybe we don't need to do this here? |
500 |
|
|
snd $_[0]{remote_node}, "g_slave"; |
501 |
root |
1.71 |
} |
502 |
|
|
}, |
503 |
root |
1.93 |
sub { |
504 |
root |
1.71 |
delete $SEED_CONNECT{$seed}; |
505 |
|
|
} |
506 |
root |
1.69 |
; |
507 |
|
|
} |
508 |
|
|
|
509 |
|
|
sub seed_all { |
510 |
root |
1.93 |
my @seeds = grep |
511 |
root |
1.113 |
!(defined $SEED_NODE{$_} && node_is_up $SEED_NODE{$_}), |
512 |
root |
1.93 |
keys %SEED_NODE; |
513 |
root |
1.69 |
|
514 |
|
|
if (@seeds) { |
515 |
root |
1.70 |
# start connection attempt for every seed we are not connected to yet |
516 |
root |
1.69 |
seed_connect $_ |
517 |
root |
1.113 |
for grep !exists $SEED_CONNECT{$_}, @seeds; |
518 |
root |
1.71 |
|
519 |
root |
1.111 |
$SEED_RETRY = $SEED_RETRY * 2; |
520 |
root |
1.71 |
$SEED_RETRY = $AnyEvent::MP::Kernel::CONFIG->{monitor_timeout} |
521 |
|
|
if $SEED_RETRY > $AnyEvent::MP::Kernel::CONFIG->{monitor_timeout}; |
522 |
|
|
|
523 |
|
|
$SEED_WATCHER = AE::timer $SEED_RETRY, 0, \&seed_all; |
524 |
|
|
|
525 |
root |
1.69 |
} else { |
526 |
root |
1.71 |
# all seeds connected or connecting, no need to restart timer |
527 |
root |
1.69 |
undef $SEED_WATCHER; |
528 |
|
|
} |
529 |
|
|
} |
530 |
|
|
|
531 |
|
|
sub seed_again { |
532 |
root |
1.111 |
$SEED_RETRY = (1 + rand) * 0.6; |
533 |
root |
1.113 |
$SEED_WATCHER ||= AE::timer 0, 0, \&seed_all; |
534 |
root |
1.69 |
} |
535 |
|
|
|
536 |
|
|
# sets new seed list, starts connecting |
537 |
|
|
sub set_seeds(@) { |
538 |
|
|
%SEED_NODE = (); |
539 |
root |
1.71 |
%NODE_SEED = (); |
540 |
|
|
%SEED_CONNECT = (); |
541 |
|
|
|
542 |
root |
1.69 |
@SEED_NODE{@_} = (); |
543 |
|
|
|
544 |
root |
1.114 |
seed_again; |
545 |
root |
1.71 |
} |
546 |
|
|
|
547 |
root |
1.111 |
# normal nodes only record global node connections |
548 |
|
|
$NODE_REQ{g_global} = sub { |
549 |
|
|
undef $GLOBAL_NODE{$SRCNODE}; |
550 |
|
|
}; |
551 |
|
|
|
552 |
root |
1.71 |
mon_nodes sub { |
553 |
root |
1.111 |
delete $GLOBAL_NODE{$_[0]} |
554 |
|
|
unless $_[1]; |
555 |
|
|
|
556 |
root |
1.93 |
return unless exists $NODE_SEED{$_[0]}; |
557 |
|
|
|
558 |
|
|
if ($_[1]) { |
559 |
|
|
# each time a connection to a seed node goes up, make |
560 |
|
|
# sure it runs the global service. |
561 |
root |
1.111 |
snd $_[0], "g_slave"; |
562 |
root |
1.93 |
} else { |
563 |
|
|
# if we lost the connection to a seed node, make sure we are seeding |
564 |
|
|
seed_again; |
565 |
|
|
} |
566 |
root |
1.71 |
}; |
567 |
|
|
|
568 |
|
|
############################################################################# |
569 |
root |
1.107 |
# keepalive code - used to kepe conenctions to certain nodes alive |
570 |
|
|
# only used by global code atm., but ought to be exposed somehow. |
571 |
root |
1.109 |
#TODO: should probbaly be done directly by node objects |
572 |
root |
1.107 |
|
573 |
|
|
our $KEEPALIVE_RETRY; |
574 |
|
|
our $KEEPALIVE_WATCHER; |
575 |
|
|
our %KEEPALIVE; # we want to keep these nodes alive |
576 |
|
|
our %KEEPALIVE_DOWN; # nodes that are down currently |
577 |
|
|
|
578 |
|
|
sub keepalive_all { |
579 |
|
|
AE::log 9 => "keepalive: trying to establish connections with: " |
580 |
|
|
. (join " ", keys %KEEPALIVE_DOWN) |
581 |
|
|
. "."; |
582 |
|
|
|
583 |
|
|
(add_node $_)->connect |
584 |
|
|
for keys %KEEPALIVE_DOWN; |
585 |
|
|
|
586 |
root |
1.111 |
$KEEPALIVE_RETRY = $KEEPALIVE_RETRY * 2; |
587 |
root |
1.107 |
$KEEPALIVE_RETRY = $AnyEvent::MP::Kernel::CONFIG->{monitor_timeout} |
588 |
|
|
if $KEEPALIVE_RETRY > $AnyEvent::MP::Kernel::CONFIG->{monitor_timeout}; |
589 |
|
|
|
590 |
|
|
$KEEPALIVE_WATCHER = AE::timer $KEEPALIVE_RETRY, 0, \&keepalive_all; |
591 |
|
|
} |
592 |
|
|
|
593 |
|
|
sub keepalive_again { |
594 |
root |
1.111 |
$KEEPALIVE_RETRY = (1 + rand) * 0.3; |
595 |
root |
1.108 |
keepalive_all; |
596 |
root |
1.107 |
} |
597 |
|
|
|
598 |
|
|
sub keepalive_add { |
599 |
|
|
return if $KEEPALIVE{$_[0]}++; |
600 |
|
|
|
601 |
|
|
return if node_is_up $_[0]; |
602 |
|
|
undef $KEEPALIVE_DOWN{$_[0]}; |
603 |
|
|
keepalive_again; |
604 |
|
|
} |
605 |
|
|
|
606 |
|
|
sub keepalive_del { |
607 |
|
|
return if --$KEEPALIVE{$_[0]}; |
608 |
|
|
|
609 |
|
|
delete $KEEPALIVE {$_[0]}; |
610 |
|
|
delete $KEEPALIVE_DOWN{$_[0]}; |
611 |
|
|
|
612 |
|
|
undef $KEEPALIVE_WATCHER |
613 |
|
|
unless %KEEPALIVE_DOWN; |
614 |
|
|
} |
615 |
|
|
|
616 |
|
|
mon_nodes sub { |
617 |
|
|
return unless exists $KEEPALIVE{$_[0]}; |
618 |
|
|
|
619 |
|
|
if ($_[1]) { |
620 |
|
|
delete $KEEPALIVE_DOWN{$_[0]}; |
621 |
|
|
|
622 |
|
|
undef $KEEPALIVE_WATCHER |
623 |
|
|
unless %KEEPALIVE_DOWN; |
624 |
|
|
} else { |
625 |
|
|
# lost the conenction, try to connect again |
626 |
|
|
undef $KEEPALIVE_DOWN{$_[0]}; |
627 |
|
|
keepalive_again; |
628 |
|
|
} |
629 |
|
|
}; |
630 |
|
|
|
631 |
|
|
############################################################################# |
632 |
root |
1.71 |
# talk with/to global nodes |
633 |
|
|
|
634 |
root |
1.72 |
# protocol messages: |
635 |
|
|
# |
636 |
root |
1.110 |
# sent by global nodes |
637 |
root |
1.111 |
# g_global - global nodes send this to all others |
638 |
root |
1.72 |
# |
639 |
root |
1.110 |
# database protocol |
640 |
|
|
# g_slave database - make other global node master of the sender |
641 |
|
|
# g_set database - global node's database to other global nodes |
642 |
root |
1.111 |
# g_upd family set del - update single family (any to global) |
643 |
root |
1.73 |
# |
644 |
root |
1.110 |
# slave <-> global protocol |
645 |
|
|
# g_find node - query addresses for node (slave to global) |
646 |
|
|
# g_found node binds - node addresses (global to slave) |
647 |
|
|
# g_db_family family id - send g_reply with data (global to slave) |
648 |
|
|
# g_db_keys family id - send g_reply with data (global to slave) |
649 |
|
|
# g_db_values family id - send g_reply with data (global to slave) |
650 |
|
|
# g_reply id result - result of any query (global to slave) |
651 |
|
|
# g_mon1 family - start to monitor family, replies with g_chg1 |
652 |
|
|
# g_mon0 family - stop monitoring family |
653 |
|
|
# g_chg1 family hash - initial value of family when starting to monitor |
654 |
|
|
# g_chg2 family set del - like g_upd, but for monitoring only |
655 |
root |
1.73 |
# |
656 |
root |
1.111 |
# internal database families: |
657 |
root |
1.73 |
# "'l" -> node -> listeners |
658 |
|
|
# "'g" -> node -> undef |
659 |
|
|
# ... |
660 |
root |
1.72 |
# |
661 |
|
|
|
662 |
root |
1.73 |
# used on all nodes: |
663 |
root |
1.88 |
our $MASTER; # the global node we bind ourselves to |
664 |
root |
1.78 |
our $MASTER_MON; |
665 |
|
|
our %LOCAL_DB; # this node database |
666 |
|
|
|
667 |
root |
1.84 |
our $GPROTO = 1; |
668 |
|
|
|
669 |
root |
1.116 |
# tell everybody who connects our gproto |
670 |
root |
1.84 |
push @AnyEvent::MP::Transport::HOOK_GREET, sub { |
671 |
|
|
$_[0]{local_greeting}{gproto} = $GPROTO; |
672 |
|
|
}; |
673 |
|
|
|
674 |
root |
1.73 |
############################################################################# |
675 |
|
|
# master selection |
676 |
|
|
|
677 |
|
|
# master requests |
678 |
|
|
our %GLOBAL_REQ; # $id => \@req |
679 |
root |
1.71 |
|
680 |
root |
1.74 |
sub global_req_add { |
681 |
root |
1.80 |
my ($id, $req) = @_; |
682 |
root |
1.71 |
|
683 |
root |
1.74 |
return if exists $GLOBAL_REQ{$id}; |
684 |
|
|
|
685 |
root |
1.80 |
$GLOBAL_REQ{$id} = $req; |
686 |
root |
1.71 |
|
687 |
root |
1.80 |
snd $MASTER, @$req |
688 |
root |
1.73 |
if $MASTER; |
689 |
root |
1.74 |
} |
690 |
root |
1.71 |
|
691 |
root |
1.74 |
sub global_req_del { |
692 |
|
|
delete $GLOBAL_REQ{$_[0]}; |
693 |
|
|
} |
694 |
|
|
|
695 |
root |
1.88 |
################################# |
696 |
|
|
# master rpc |
697 |
|
|
|
698 |
|
|
our %GLOBAL_RES; |
699 |
|
|
our $GLOBAL_RES_ID = "a"; |
700 |
|
|
|
701 |
|
|
sub global_call { |
702 |
|
|
my $id = ++$GLOBAL_RES_ID; |
703 |
|
|
$GLOBAL_RES{$id} = pop; |
704 |
|
|
global_req_add $id, [@_, $id]; |
705 |
|
|
} |
706 |
|
|
|
707 |
|
|
$NODE_REQ{g_reply} = sub { |
708 |
|
|
my $id = shift; |
709 |
|
|
global_req_del $id; |
710 |
|
|
my $cb = delete $GLOBAL_RES{$id} |
711 |
|
|
or return; |
712 |
|
|
&$cb |
713 |
|
|
}; |
714 |
|
|
|
715 |
|
|
################################# |
716 |
|
|
|
717 |
root |
1.74 |
sub g_find { |
718 |
root |
1.80 |
global_req_add "g_find $_[0]", [g_find => $_[0]]; |
719 |
root |
1.73 |
} |
720 |
root |
1.71 |
|
721 |
root |
1.73 |
# reply for g_find started in Node.pm |
722 |
root |
1.79 |
$NODE_REQ{g_found} = sub { |
723 |
root |
1.74 |
global_req_del "g_find $_[0]"; |
724 |
|
|
|
725 |
root |
1.73 |
my $node = $NODE{$_[0]} or return; |
726 |
root |
1.71 |
|
727 |
root |
1.79 |
$node->connect_to ($_[1]); |
728 |
root |
1.71 |
}; |
729 |
|
|
|
730 |
root |
1.73 |
sub master_set { |
731 |
|
|
$MASTER = $_[0]; |
732 |
root |
1.111 |
AE::log 8 => "new master node: $MASTER."; |
733 |
|
|
|
734 |
|
|
$MASTER_MON = mon_nodes sub { |
735 |
|
|
if ($_[0] eq $MASTER && !$_[1]) { |
736 |
|
|
undef $MASTER; |
737 |
|
|
master_search (); |
738 |
|
|
} |
739 |
|
|
}; |
740 |
root |
1.71 |
|
741 |
root |
1.73 |
snd $MASTER, g_slave => \%LOCAL_DB; |
742 |
root |
1.71 |
|
743 |
root |
1.73 |
# (re-)send queued requests |
744 |
|
|
snd $MASTER, @$_ |
745 |
|
|
for values %GLOBAL_REQ; |
746 |
|
|
} |
747 |
root |
1.71 |
|
748 |
root |
1.72 |
sub master_search { |
749 |
root |
1.111 |
AE::log 9 => "starting search for master node."; |
750 |
|
|
|
751 |
root |
1.115 |
#TODO: should also look for other global nodes, but we don't know them |
752 |
root |
1.73 |
for (keys %NODE_SEED) { |
753 |
root |
1.72 |
if (node_is_up $_) { |
754 |
|
|
master_set $_; |
755 |
|
|
return; |
756 |
root |
1.71 |
} |
757 |
root |
1.72 |
} |
758 |
root |
1.71 |
|
759 |
root |
1.78 |
$MASTER_MON = mon_nodes sub { |
760 |
root |
1.72 |
return unless $_[1]; # we are only interested in node-ups |
761 |
|
|
return unless $NODE_SEED{$_[0]}; # we are only interested in seed nodes |
762 |
root |
1.71 |
|
763 |
root |
1.72 |
master_set $_[0]; |
764 |
|
|
}; |
765 |
root |
1.71 |
} |
766 |
|
|
|
767 |
root |
1.110 |
# other node wants to make us the master, so start the global service |
768 |
root |
1.79 |
$NODE_REQ{g_slave} = sub { |
769 |
root |
1.80 |
# load global module and redo the request |
770 |
root |
1.73 |
require AnyEvent::MP::Global; |
771 |
root |
1.80 |
&{ $NODE_REQ{g_slave} } |
772 |
root |
1.71 |
}; |
773 |
|
|
|
774 |
root |
1.73 |
############################################################################# |
775 |
root |
1.79 |
# local database operations |
776 |
root |
1.71 |
|
777 |
root |
1.111 |
# canonical probably not needed |
778 |
|
|
our $sv_eq_coder = JSON::XS->new->utf8->allow_nonref; |
779 |
|
|
|
780 |
|
|
# are the two scalars equal? very very ugly and slow, need better way |
781 |
|
|
sub sv_eq($$) { |
782 |
|
|
ref $_[0] || ref $_[1] |
783 |
|
|
? (JSON::XS::encode $sv_eq_coder, $_[0]) eq (JSON::XS::encode $sv_eq_coder, $_[1]) |
784 |
|
|
: $_[0] eq $_[1] |
785 |
|
|
&& defined $_[0] == defined $_[1] |
786 |
|
|
} |
787 |
|
|
|
788 |
root |
1.79 |
# local database management |
789 |
root |
1.88 |
|
790 |
root |
1.111 |
sub db_del($@) { |
791 |
|
|
my $family = shift; |
792 |
|
|
|
793 |
|
|
my @del = grep exists $LOCAL_DB{$family}{$_}, @_; |
794 |
|
|
|
795 |
|
|
return unless @del; |
796 |
|
|
|
797 |
|
|
delete @{ $LOCAL_DB{$family} }{@del}; |
798 |
|
|
snd $MASTER, g_upd => $family => undef, \@del |
799 |
|
|
if defined $MASTER; |
800 |
|
|
} |
801 |
|
|
|
802 |
root |
1.87 |
sub db_set($$;$) { |
803 |
root |
1.97 |
my ($family, $subkey) = @_; |
804 |
|
|
|
805 |
root |
1.89 |
# if (ref $_[1]) { |
806 |
|
|
# # bulk |
807 |
|
|
# my @del = grep exists $LOCAL_DB{$_[0]}{$_}, keys ${ $_[1] }; |
808 |
|
|
# $LOCAL_DB{$_[0]} = $_[1]; |
809 |
|
|
# snd $MASTER, g_upd => $_[0] => $_[1], \@del |
810 |
|
|
# if defined $MASTER; |
811 |
|
|
# } else { |
812 |
|
|
# single-key |
813 |
root |
1.111 |
unless (exists $LOCAL_DB{$family}{$subkey} && sv_eq $LOCAL_DB{$family}{$subkey}, $_[2]) { |
814 |
|
|
$LOCAL_DB{$family}{$subkey} = $_[2]; |
815 |
|
|
snd $MASTER, g_upd => $family => { $subkey => $_[2] } |
816 |
|
|
if defined $MASTER; |
817 |
|
|
} |
818 |
root |
1.89 |
# } |
819 |
root |
1.97 |
|
820 |
|
|
defined wantarray |
821 |
|
|
and Guard::guard { db_del $family => $subkey } |
822 |
root |
1.79 |
} |
823 |
|
|
|
824 |
root |
1.88 |
# database query |
825 |
|
|
|
826 |
|
|
sub db_family { |
827 |
|
|
my ($family, $cb) = @_; |
828 |
|
|
global_call g_db_family => $family, $cb; |
829 |
|
|
} |
830 |
|
|
|
831 |
|
|
sub db_keys { |
832 |
|
|
my ($family, $cb) = @_; |
833 |
|
|
global_call g_db_keys => $family, $cb; |
834 |
|
|
} |
835 |
|
|
|
836 |
|
|
sub db_values { |
837 |
|
|
my ($family, $cb) = @_; |
838 |
|
|
global_call g_db_values => $family, $cb; |
839 |
root |
1.80 |
} |
840 |
|
|
|
841 |
root |
1.88 |
# database monitoring |
842 |
root |
1.80 |
|
843 |
root |
1.81 |
our %LOCAL_MON; # f, reply |
844 |
|
|
our %MON_DB; # f, k, value |
845 |
root |
1.80 |
|
846 |
root |
1.81 |
sub db_mon($@) { |
847 |
root |
1.84 |
my ($family, $cb) = @_; |
848 |
root |
1.81 |
|
849 |
root |
1.84 |
if (my $db = $MON_DB{$family}) { |
850 |
root |
1.89 |
# we already monitor, so create a "dummy" change event |
851 |
|
|
# this is postponed, which might be too late (we could process |
852 |
|
|
# change events), so disable the callback at first |
853 |
|
|
$LOCAL_MON{$family}{$cb+0} = sub { }; |
854 |
|
|
AE::postpone { |
855 |
|
|
return unless exists $LOCAL_MON{$family}{$cb+0}; # guard might have gone away already |
856 |
|
|
|
857 |
|
|
# set actual callback |
858 |
|
|
$LOCAL_MON{$family}{$cb+0} = $cb; |
859 |
|
|
$cb->($db, [keys %$db]); |
860 |
|
|
}; |
861 |
root |
1.81 |
} else { |
862 |
|
|
# new monitor, request chg1 from upstream |
863 |
root |
1.89 |
$LOCAL_MON{$family}{$cb+0} = $cb; |
864 |
root |
1.81 |
global_req_add "mon1 $family" => [g_mon1 => $family]; |
865 |
|
|
$MON_DB{$family} = {}; |
866 |
|
|
} |
867 |
|
|
|
868 |
root |
1.90 |
defined wantarray |
869 |
|
|
and Guard::guard { |
870 |
|
|
my $mon = $LOCAL_MON{$family}; |
871 |
|
|
delete $mon->{$cb+0}; |
872 |
|
|
|
873 |
|
|
unless (%$mon) { |
874 |
|
|
global_req_del "mon1 $family"; |
875 |
|
|
|
876 |
|
|
# no global_req, because we don't care if we are not connected |
877 |
|
|
snd $MASTER, g_mon0 => $family |
878 |
|
|
if $MASTER; |
879 |
root |
1.80 |
|
880 |
root |
1.90 |
delete $LOCAL_MON{$family}; |
881 |
|
|
delete $MON_DB{$family}; |
882 |
|
|
} |
883 |
root |
1.80 |
} |
884 |
|
|
} |
885 |
|
|
|
886 |
root |
1.82 |
# full update |
887 |
root |
1.80 |
$NODE_REQ{g_chg1} = sub { |
888 |
root |
1.96 |
return unless $SRCNODE eq $MASTER; |
889 |
root |
1.84 |
my ($f, $ndb) = @_; |
890 |
|
|
|
891 |
|
|
my $db = $MON_DB{$f}; |
892 |
root |
1.89 |
my (@a, @c, @d); |
893 |
root |
1.81 |
|
894 |
root |
1.82 |
# add or replace keys |
895 |
root |
1.84 |
while (my ($k, $v) = each %$ndb) { |
896 |
root |
1.89 |
exists $db->{$k} |
897 |
|
|
? push @c, $k |
898 |
|
|
: push @a, $k; |
899 |
root |
1.84 |
$db->{$k} = $v; |
900 |
root |
1.82 |
} |
901 |
root |
1.81 |
|
902 |
root |
1.82 |
# delete keys that are no longer present |
903 |
root |
1.84 |
for (grep !exists $ndb->{$_}, keys %$db) { |
904 |
|
|
delete $db->{$_}; |
905 |
root |
1.89 |
push @d, $_; |
906 |
root |
1.81 |
} |
907 |
root |
1.84 |
|
908 |
root |
1.89 |
$_->($db, \@a, \@c, \@d) |
909 |
root |
1.84 |
for values %{ $LOCAL_MON{$_[0]} }; |
910 |
root |
1.80 |
}; |
911 |
|
|
|
912 |
root |
1.82 |
# incremental update |
913 |
root |
1.84 |
$NODE_REQ{g_chg2} = sub { |
914 |
root |
1.96 |
return unless $SRCNODE eq $MASTER; |
915 |
root |
1.89 |
my ($family, $set, $del) = @_; |
916 |
|
|
|
917 |
|
|
my $db = $MON_DB{$family}; |
918 |
root |
1.84 |
|
919 |
root |
1.89 |
my (@a, @c); |
920 |
root |
1.84 |
|
921 |
root |
1.89 |
while (my ($k, $v) = each %$set) { |
922 |
|
|
exists $db->{$k} |
923 |
|
|
? push @c, $k |
924 |
|
|
: push @a, $k; |
925 |
|
|
$db->{$k} = $v; |
926 |
|
|
} |
927 |
|
|
|
928 |
|
|
delete @$db{@$del}; |
929 |
|
|
|
930 |
|
|
$_->($db, \@a, \@c, $del) |
931 |
|
|
for values %{ $LOCAL_MON{$family} }; |
932 |
root |
1.84 |
}; |
933 |
root |
1.80 |
|
934 |
root |
1.69 |
############################################################################# |
935 |
|
|
# configure |
936 |
|
|
|
937 |
root |
1.81 |
sub nodename { |
938 |
root |
1.69 |
require POSIX; |
939 |
|
|
(POSIX::uname ())[1] |
940 |
|
|
} |
941 |
|
|
|
942 |
|
|
sub _resolve($) { |
943 |
|
|
my ($nodeid) = @_; |
944 |
|
|
|
945 |
|
|
my $cv = AE::cv; |
946 |
|
|
my @res; |
947 |
|
|
|
948 |
|
|
$cv->begin (sub { |
949 |
|
|
my %seen; |
950 |
|
|
my @refs; |
951 |
|
|
for (sort { $a->[0] <=> $b->[0] } @res) { |
952 |
|
|
push @refs, $_->[1] unless $seen{$_->[1]}++ |
953 |
|
|
} |
954 |
|
|
shift->send (@refs); |
955 |
|
|
}); |
956 |
|
|
|
957 |
|
|
my $idx; |
958 |
|
|
for my $t (split /,/, $nodeid) { |
959 |
|
|
my $pri = ++$idx; |
960 |
|
|
|
961 |
root |
1.81 |
$t = length $t ? nodename . ":$t" : nodename |
962 |
root |
1.69 |
if $t =~ /^\d*$/; |
963 |
|
|
|
964 |
|
|
my ($host, $port) = AnyEvent::Socket::parse_hostport $t, 0 |
965 |
|
|
or Carp::croak "$t: unparsable transport descriptor"; |
966 |
|
|
|
967 |
|
|
$port = "0" if $port eq "*"; |
968 |
|
|
|
969 |
|
|
if ($host eq "*") { |
970 |
|
|
$cv->begin; |
971 |
|
|
|
972 |
root |
1.103 |
my $get_addr = sub { |
973 |
|
|
my @addr; |
974 |
|
|
|
975 |
|
|
require Net::Interface; |
976 |
|
|
|
977 |
|
|
# Net::Interface hangs on some systems, so hope for the best |
978 |
|
|
local $SIG{ALRM} = 'DEFAULT'; |
979 |
|
|
alarm 2; |
980 |
|
|
|
981 |
|
|
for my $if (Net::Interface->interfaces) { |
982 |
|
|
# we statically lower-prioritise ipv6 here, TODO :() |
983 |
|
|
for $_ ($if->address (Net::Interface::AF_INET ())) { |
984 |
|
|
next if /^\x7f/; # skip localhost etc. |
985 |
|
|
push @addr, $_; |
986 |
root |
1.69 |
} |
987 |
root |
1.103 |
for ($if->address (Net::Interface::AF_INET6 ())) { |
988 |
|
|
#next if $if->scope ($_) <= 2; |
989 |
|
|
next unless /^[\x20-\x3f\xfc\xfd]/; # global unicast, site-local unicast |
990 |
|
|
push @addr, $_; |
991 |
root |
1.69 |
} |
992 |
|
|
} |
993 |
root |
1.103 |
|
994 |
|
|
alarm 0; |
995 |
|
|
|
996 |
|
|
@addr |
997 |
|
|
}; |
998 |
|
|
|
999 |
|
|
my @addr; |
1000 |
|
|
|
1001 |
|
|
if (AnyEvent::WIN32) { |
1002 |
|
|
@addr = $get_addr->(); |
1003 |
|
|
} else { |
1004 |
|
|
# use a child process, as Net::Interface is big, and we need it only once. |
1005 |
|
|
|
1006 |
|
|
pipe my $r, my $w |
1007 |
|
|
or die "pipe: $!"; |
1008 |
|
|
|
1009 |
|
|
if (fork eq 0) { |
1010 |
|
|
close $r; |
1011 |
|
|
syswrite $w, pack "(C/a*)*", $get_addr->(); |
1012 |
|
|
require POSIX; |
1013 |
|
|
POSIX::_exit (0); |
1014 |
|
|
} else { |
1015 |
|
|
close $w; |
1016 |
|
|
|
1017 |
|
|
my $addr; |
1018 |
|
|
|
1019 |
|
|
1 while sysread $r, $addr, 1024, length $addr; |
1020 |
|
|
|
1021 |
|
|
@addr = unpack "(C/a*)*", $addr; |
1022 |
|
|
} |
1023 |
|
|
} |
1024 |
|
|
|
1025 |
|
|
for my $ip (@addr) { |
1026 |
|
|
push @res, [ |
1027 |
|
|
$pri += 1e-5, |
1028 |
|
|
AnyEvent::Socket::format_hostport AnyEvent::Socket::format_address $ip, $port |
1029 |
|
|
]; |
1030 |
|
|
} |
1031 |
|
|
$cv->end; |
1032 |
root |
1.69 |
} else { |
1033 |
|
|
$cv->begin; |
1034 |
|
|
AnyEvent::Socket::resolve_sockaddr $host, $port, "tcp", 0, undef, sub { |
1035 |
|
|
for (@_) { |
1036 |
|
|
my ($service, $host) = AnyEvent::Socket::unpack_sockaddr $_->[3]; |
1037 |
|
|
push @res, [ |
1038 |
|
|
$pri += 1e-5, |
1039 |
|
|
AnyEvent::Socket::format_hostport AnyEvent::Socket::format_address $host, $service |
1040 |
|
|
]; |
1041 |
|
|
} |
1042 |
|
|
$cv->end; |
1043 |
|
|
}; |
1044 |
|
|
} |
1045 |
|
|
} |
1046 |
|
|
|
1047 |
|
|
$cv->end; |
1048 |
|
|
|
1049 |
|
|
$cv |
1050 |
|
|
} |
1051 |
|
|
|
1052 |
root |
1.112 |
our @POST_CONFIGURE; |
1053 |
|
|
|
1054 |
|
|
# not yet documented |
1055 |
|
|
sub post_configure(&) { |
1056 |
|
|
die "AnyEvent::MP::Kernel::post_configure must be called in void context" if defined wantarray; |
1057 |
|
|
|
1058 |
|
|
push @POST_CONFIGURE, @_; |
1059 |
|
|
(shift @POST_CONFIGURE)->() while $NODE && @POST_CONFIGURE; |
1060 |
|
|
} |
1061 |
|
|
|
1062 |
root |
1.69 |
sub configure(@) { |
1063 |
|
|
unshift @_, "profile" if @_ & 1; |
1064 |
|
|
my (%kv) = @_; |
1065 |
|
|
|
1066 |
|
|
my $profile = delete $kv{profile}; |
1067 |
|
|
|
1068 |
root |
1.81 |
$profile = nodename |
1069 |
root |
1.69 |
unless defined $profile; |
1070 |
|
|
|
1071 |
|
|
$CONFIG = AnyEvent::MP::Config::find_profile $profile, %kv; |
1072 |
|
|
|
1073 |
root |
1.104 |
$SECURE = $CONFIG->{secure}; |
1074 |
root |
1.83 |
|
1075 |
root |
1.72 |
my $node = exists $CONFIG->{nodeid} ? $CONFIG->{nodeid} : "$profile/"; |
1076 |
root |
1.69 |
|
1077 |
|
|
$node or Carp::croak "$node: illegal node ID (see AnyEvent::MP manpage for syntax)\n"; |
1078 |
|
|
|
1079 |
root |
1.106 |
my $node_obj = delete $NODE{$NODE}; # we do not support doing stuff before configure |
1080 |
|
|
|
1081 |
root |
1.72 |
$NODE = $node; |
1082 |
root |
1.77 |
|
1083 |
root |
1.81 |
$NODE =~ s/%n/nodename/ge; |
1084 |
|
|
|
1085 |
|
|
if ($NODE =~ s!(?:(?<=/)$|%u)!$RUNIQ!g) { |
1086 |
root |
1.77 |
# nodes with randomised node names do not need randomised port names |
1087 |
|
|
$UNIQ = ""; |
1088 |
|
|
} |
1089 |
root |
1.69 |
|
1090 |
root |
1.106 |
$node_obj->{id} = $NODE; |
1091 |
|
|
$NODE{$NODE} = $node_obj; |
1092 |
root |
1.69 |
|
1093 |
|
|
my $seeds = $CONFIG->{seeds}; |
1094 |
|
|
my $binds = $CONFIG->{binds}; |
1095 |
|
|
|
1096 |
|
|
$binds ||= ["*"]; |
1097 |
|
|
|
1098 |
root |
1.98 |
AE::log 8 => "node $NODE starting up."; |
1099 |
root |
1.69 |
|
1100 |
root |
1.85 |
$BINDS = []; |
1101 |
|
|
%BINDS = (); |
1102 |
root |
1.69 |
|
1103 |
|
|
for (map _resolve $_, @$binds) { |
1104 |
|
|
for my $bind ($_->recv) { |
1105 |
|
|
my ($host, $port) = AnyEvent::Socket::parse_hostport $bind |
1106 |
|
|
or Carp::croak "$bind: unparsable local bind address"; |
1107 |
|
|
|
1108 |
|
|
my $listener = AnyEvent::MP::Transport::mp_server |
1109 |
|
|
$host, |
1110 |
|
|
$port, |
1111 |
|
|
prepare => sub { |
1112 |
|
|
my (undef, $host, $port) = @_; |
1113 |
|
|
$bind = AnyEvent::Socket::format_hostport $host, $port; |
1114 |
|
|
0 |
1115 |
|
|
}, |
1116 |
|
|
; |
1117 |
root |
1.85 |
$BINDS{$bind} = $listener; |
1118 |
|
|
push @$BINDS, $bind; |
1119 |
root |
1.69 |
} |
1120 |
|
|
} |
1121 |
|
|
|
1122 |
root |
1.112 |
AE::log 9 => "running post config hooks and init."; |
1123 |
|
|
|
1124 |
|
|
# might initialise Global, so need to do it before db_set |
1125 |
|
|
post_configure { }; |
1126 |
|
|
|
1127 |
root |
1.85 |
db_set "'l" => $NODE => $BINDS; |
1128 |
root |
1.73 |
|
1129 |
root |
1.98 |
AE::log 8 => "node listens on [@$BINDS]."; |
1130 |
root |
1.69 |
|
1131 |
|
|
# connect to all seednodes |
1132 |
|
|
set_seeds map $_->recv, map _resolve $_, @$seeds; |
1133 |
root |
1.73 |
master_search; |
1134 |
|
|
|
1135 |
root |
1.103 |
# save gobs of memory |
1136 |
|
|
undef &_resolve; |
1137 |
|
|
*configure = sub (@){ }; |
1138 |
|
|
|
1139 |
root |
1.112 |
AE::log 9 => "starting services."; |
1140 |
|
|
|
1141 |
root |
1.69 |
for (@{ $CONFIG->{services} }) { |
1142 |
|
|
if (ref) { |
1143 |
|
|
my ($func, @args) = @$_; |
1144 |
|
|
(load_func $func)->(@args); |
1145 |
|
|
} elsif (s/::$//) { |
1146 |
|
|
eval "require $_"; |
1147 |
|
|
die $@ if $@; |
1148 |
|
|
} else { |
1149 |
|
|
(load_func $_)->(); |
1150 |
|
|
} |
1151 |
|
|
} |
1152 |
root |
1.102 |
|
1153 |
|
|
eval "#line 1 \"(eval configure parameter)\"\n$CONFIG->{eval}"; |
1154 |
|
|
die "$@" if $@; |
1155 |
root |
1.69 |
} |
1156 |
|
|
|
1157 |
root |
1.1 |
=back |
1158 |
|
|
|
1159 |
root |
1.101 |
=head1 LOGGING |
1160 |
|
|
|
1161 |
|
|
AnyEvent::MP::Kernel logs high-level information about the current node, |
1162 |
|
|
when nodes go up and down, and most runtime errors. It also logs some |
1163 |
|
|
debugging and trace messages about network maintainance, such as seed |
1164 |
|
|
connections and global node management. |
1165 |
|
|
|
1166 |
root |
1.1 |
=head1 SEE ALSO |
1167 |
|
|
|
1168 |
|
|
L<AnyEvent::MP>. |
1169 |
|
|
|
1170 |
|
|
=head1 AUTHOR |
1171 |
|
|
|
1172 |
|
|
Marc Lehmann <schmorp@schmorp.de> |
1173 |
|
|
http://home.schmorp.de/ |
1174 |
|
|
|
1175 |
|
|
=cut |
1176 |
|
|
|
1177 |
|
|
1 |
1178 |
|
|
|