use IPC::Open2;
use IPC::Open3;
use IO::Handle;
+use Object::Remote::Logging qw( :log :dlog );
use Object::Remote::ModuleSender;
use Object::Remote::Handle;
use Object::Remote::Future;
-use Object::Remote::Logging qw( :log :dlog );
-use Scalar::Util qw(blessed);
+use Scalar::Util qw(blessed weaken);
use Moo::Role;
+use Symbol;
with 'Object::Remote::Role::Connector';
has module_sender => (is => 'lazy');
+
#if no child_stderr file handle is specified then stderr
#of the child will be connected to stderr of the parent
-has stderr => ( is => 'rw', default => sub { \*STDERR } );
+has stderr => ( is => 'rw', default => sub { undef } );
sub _build_module_sender {
my ($hook) =
}
has perl_command => (is => 'lazy');
+has watchdog_timeout => ( is => 'ro', required => 1, default => sub { 0 } );
#TODO convert nice value into optional feature enabled by
#setting value of attribute
#ulimit of ~500 megs of v-ram
#TODO only works with ssh with quotes but only works locally
#with out quotes
-#sub _build_perl_command { [ 'sh', '-c', '"ulimit -v 80000; nice -n 15 perl -"' ] }
-sub _build_perl_command { [ 'sh', '-c', '"ulimit -v 500000; nice -n 15 perl -"' ] }
+sub _build_perl_command {[ 'sh -c "ulimit -v 200000; nice -n 15 perl -"' ] }
#sub _build_perl_command { [ 'perl', '-' ] }
+#sub _build_perl_command { [ 'cat' ] }
around connect => sub {
my ($orig, $self) = (shift, shift);
return future {
$f->on_done(sub {
my ($conn) = $f->get;
+ $self->_setup_watchdog_reset($conn);
my $sub = $conn->remote_sub('Object::Remote::Logging::init_logging_forwarding');
$sub->('Object::Remote::Logging', Object::Remote::Logging->arg_router);
Object::Remote::Handle->new(
my $foreign_stderr;
Dlog_debug { "invoking connection to perl interpreter using command line: $_" } @{$self->final_perl_command};
-
- use Symbol;
-
+
if (defined($given_stderr)) {
+ #if the stderr data goes to an existing file handle
+ #an need an anonymous file handle is required
+ #as the other half of a pipe style file handle pair
+ #so the file handles can go into the run loop
$foreign_stderr = gensym();
} else {
+ #if no file handle has been specified
+ #for the child's stderr then connect
+ #the child stderr to the parent stderr
$foreign_stderr = ">&STDERR";
}
Dlog_trace { "got $len characters of stderr data for connection" };
print $given_stderr $buf or die "could not send stderr data: $!";
}
- }
+ }
);
}
- #TODO open2() dupes the child stderr into the calling
- #process stderr which means if this process exits the
- #child is still attached to the shell - using open3()
- #and having the run loop manage the stderr means this
- #won't happen BUT if the run loop just sends the remote
- #stderr data to the local stderr the logs will interleave
- #for sure - a simple test would be to use open3() and just
- #close the remote stderr and see what happens - a longer
- #term solution would be for Object::Remote to offer a feature
- #where the user of a connection species a destination for output
- #either a file name or their own file handle and the node output
- #is dumped to it
-# my $pid = open2(
-# my $foreign_stdout,
-# my $foreign_stdin,
-# @{$self->final_perl_command},
-# ) or die "Failed to run perl at '$_[0]': $!";
-
- Dlog_trace { "Connection to remote side successful; remote stdin and stdout: $_" } [ $foreign_stdin, $foreign_stdout ];
return ($foreign_stdin, $foreign_stdout, $pid);
}
-#TODO open2() forks off a child and I have not been able to locate
-#a mechanism for reaping dead children so they don't become zombies
-#CONFIRMED there is no reaping of children being done, find a safe
-#way to do it
sub _open2_for {
my $self = shift;
my ($foreign_stdin, $foreign_stdout, $pid) = $self->_start_perl(@_);
return ($foreign_stdin, $foreign_stdout, $pid);
}
+sub _setup_watchdog_reset {
+ my ($self, $conn) = @_;
+ my $timer_id;
+
+ return unless $self->watchdog_timeout;
+
+ Dlog_trace { "Creating Watchdog management timer for connection id $_" } $conn->_id;
+
+ $timer_id = Object::Remote->current_loop->watch_time(
+ every => $self->watchdog_timeout / 3,
+ code => sub {
+ unless(defined($conn)) {
+ log_trace { "Weak reference to connection in Watchdog was lost, terminating update timer $timer_id" };
+ Object::Remote->current_loop->unwatch_time($timer_id);
+ return;
+ }
+
+ Dlog_debug { "Reseting Watchdog for connection id $_" } $conn->_id;
+ #we do not want to block in the run loop so send the
+ #update off and ignore any result, we don't need it
+ #anyway
+ $conn->send_class_call(0, 'Object::Remote::WatchDog', 'reset');
+ }
+ );
+
+ $conn->on_close->on_done(sub { Object::Remote->current_loop->unwatch_time($timer_id) });
+}
+
sub fatnode_text {
my ($self) = @_;
- require Object::Remote::FatNode;
my $text = '';
+
+ require Object::Remote::FatNode;
+
+ $text = "my \$WATCHDOG_TIMEOUT = '" . $self->watchdog_timeout . "';\n";
+
+ if (my $duration = $self->watchdog_timeout) {
+ $text .= "alarm(\$WATCHDOG_TIMEOUT);\n";
+ }
+
$text .= 'BEGIN { $ENV{OBJECT_REMOTE_DEBUG} = 1 }'."\n"
if $ENV{OBJECT_REMOTE_DEBUG};
$text .= <<'END';
eval $Object::Remote::FatNode::DATA;
die $@ if $@;
END
+
$text .= "__END__\n";
return $text;
}
projects / scpubgit/Object-Remote.git / blobdiff