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package IvyIO;
use strict;
use Ivy;
use Carp;
use Tk;
my $ivy;
my $MW;
my %appNameByhostAndPort = ();
my %diedApp = ();
my $pingcallback;
my %timerId = ();
my $pingdelay = 3000;
my $pongtimeout = 1000;
# init an ivy bus
sub init {
my ($appname, $bus, $conncb, $disconncb, $pingcb, $mw) = @_;
$MW = $mw;
Ivy->init(-loopMode => 'TK',
-appName => $appname,
-ivyBus => $bus,
);
$pingcallback = $pingcb;
$ivy = Ivy->new(-statusFunc => sub {&_status($conncb, $disconncb, @_);});
$ivy->start;
$mw->repeat ($pingdelay ,\&sendPings) if defined $pingcb;
} # end init
# kill a named agent
sub kill {
my $appname = shift;
$ivy->sendDieTo($appname);
} # end kill
sub _status {
my ($conncb, $disconncb, $ref_array_present, $ref_array_absent,
$ref_hash_present, $agent, $status, $host) = @_;
#print "Status : @_\n";
if ($status eq "new") {
&$conncb($agent, $host);
$appNameByhostAndPort{$host} = $agent;
delete $diedApp{$host};
} elsif ($status eq "died") {
&$disconncb($agent, $host);
$diedApp{$host} = 1;
}
} # end _status
#------------------------------------------------------------------------
#
# output
#
#------------------------------------------------------------------------
sub send_rate {
my ($rate) = shift;
return unless $ivy;
$ivy->sendMsgs("SetClock Rate=$rate");
} # end ivy_send_rate
sub send_time {
my ($time) = shift;
return unless $ivy;
$ivy->sendMsgs("SetClock Time=$time");
} # end send_time
sub send_pause {
return unless $ivy;
$ivy->sendMsgs("ClockStop");
} # end send_pause
sub send_play {
return unless $ivy;
$ivy->sendMsgs("ClockStart");
} # end send_play_command
#------------------------------------------------------------------------
#
# input
#
#------------------------------------------------------------------------
sub bind_for_play_event {
my $cb = shift;
return unless $cb;
return unless $ivy;
$ivy->bindRegexp("^ClockStart", [sub { shift; &$cb(); }]);
} # end bind_for_play_event
sub bind_for_pause_event {
my $cb = shift;
return unless $cb;
return unless $ivy;
$ivy->bindRegexp("^ClockStop", [sub { shift; &$cb(); }]);
} # end bind_for_pause_event
# execute the callback with arguments <time> and <rate>
sub bind_for_clock_and_rate_event {
my $cb = shift;
return unless $cb;
return unless $ivy;
$ivy->bindRegexp('^ClockEvent Time=(\d\d):(\d\d):(\d\d) Rate=(.*) Bs=.*',
[sub { shift; &$cb(@_); }]);
$ivy->bindRegexp('^ClockDatas Time=(\d\d):(\d\d):(\d\d) Rate=(.*) Bs=.*',
[sub { shift; &$cb(@_); }]);
} # end bind_for_clock_event
# execute the callback kill all
sub bind_for_kill_all {
my $cb = shift;
return unless $cb;
return unless $ivy;
$ivy->bindRegexp('^IvyControlPanel KillAll',
[sub { shift; &$cb(); }]);
} # end bind_for_clock_event
# send a ping to agent(s)
sub sendPings ()
{
my $appf;
foreach $appf (keys (%appNameByhostAndPort)) {
next if exists $diedApp{$appf};
# gestion de timeout : si le pong n'est toujours pas reçu au bout de 500ms
# on force l'appel à &$pingcallback avec un timestamp égal à -1
$timerId{$appf} =
$MW->after($pongtimeout, sub {
print "pong timeout on agent $appNameByhostAndPort{$appf} ($pongtimeout ms)\n";
&$pingcallback($appNameByhostAndPort{$appf}, $appf, -1);
delete $timerId{$appf};
});
$ivy->ping ($appf, \&receivePongCb);
}
} # end sendPings
# received pong, Agent is notified with the ping/pong time value
sub receivePongCb($$)
{
my ($time, $appf) = @_; # time = ping/pong duration in ms
$MW->afterCancel($timerId{$appf}) if $timerId{$appf};
#printf ("DBG> :$received: $appf [$time]".$appNameByhostAndPort{$appf}."\n");
&$pingcallback($appNameByhostAndPort{$appf}, $appf, $time);
} # end receivePongCb
1;
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