package Object::Remote::Role::Connector::PerlInterpreter;
use IPC::Open2;
+use IO::Handle;
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 Moo::Role;
return $hook ? $hook->sender : Object::Remote::ModuleSender->new;
}
+has perl_command => (is => 'lazy');
+
+#TODO convert nice value into optional feature enabled by
+#setting value of attribute
+#ulimit of ~500 megs of v-ram
+#TODO only works with ssh with quotes but only works locally
+#with out quotes
+sub _build_perl_command { [ 'sh', '-c', '"ulimit -v 500000; nice -n 15 perl -"' ] }
+#sub _build_perl_command { [ 'perl', '-' ] }
+
around connect => sub {
my ($orig, $self) = (shift, shift);
- my $conn = $self->$orig(@_);
- Object::Remote::Handle->new(
- connection => $conn,
- class => 'Object::Remote::ModuleLoader',
- args => { module_sender => $self->module_sender }
- )->disarm_free;
- return $conn;
+ my $f = $self->$start::start($orig => @_);
+ return future {
+ $f->on_done(sub {
+ my ($conn) = $f->get;
+ my $sub = $conn->remote_sub('Object::Remote::Logging::init_logging_forwarding');
+ $sub->('Object::Remote::Logging', Object::Remote::Logging->arg_router);
+ Object::Remote::Handle->new(
+ connection => $conn,
+ class => 'Object::Remote::ModuleLoader',
+ args => { module_sender => $self->module_sender }
+ )->disarm_free;
+ require Object::Remote::Prompt;
+ Object::Remote::Prompt::maybe_set_prompt_command_on($conn);
+ });
+ $f;
+ } 2;
};
-sub _perl_command { 'perl', '-' }
+sub final_perl_command { shift->perl_command }
sub _start_perl {
my $self = shift;
+ Dlog_debug { "invoking connection to perl interpreter using command line: $_" } @{$self->final_perl_command};
my $pid = open2(
my $foreign_stdout,
my $foreign_stdin,
- $self->_perl_command(@_),
+ @{$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
sub _open2_for {
my $self = shift;
my ($foreign_stdin, $foreign_stdout, $pid) = $self->_start_perl(@_);
- print $foreign_stdin 'BEGIN { $ENV{OBJECT_REMOTE_DEBUG} = 1 }'."\n"
- if $ENV{OBJECT_REMOTE_DEBUG};
- print $foreign_stdin $self->fatnode_text
- or die "Failed to send fatpacked data to new node on '$_[0]': $!";
+ my $to_send = $self->fatnode_text;
+ log_debug { my $len = length($to_send); "Sending contents of fat node to remote node; size is '$len' characters" };
+ Object::Remote->current_loop
+ ->watch_io(
+ handle => $foreign_stdin,
+ on_write_ready => sub {
+ my $len = syswrite($foreign_stdin, $to_send, 32768);
+ if (defined $len) {
+ substr($to_send, 0, $len) = '';
+ }
+ # if the stdin went away, we'll never get Shere
+ # so it's not a big deal to simply give up on !defined
+ if (!defined($len) or 0 == length($to_send)) {
+ log_trace { "Got EOF or error when writing fatnode data to filehandle, unwatching it" };
+ Object::Remote->current_loop
+ ->unwatch_io(
+ handle => $foreign_stdin,
+ on_write_ready => 1
+ );
+ } else {
+ log_trace { "Sent $len bytes of fatnode data to remote side" };
+ }
+ }
+ );
return ($foreign_stdin, $foreign_stdout, $pid);
}
$INC{'Object/Remote/FatNode.pm'} = __FILE__;
$Object::Remote::FatNode::DATA = <<'ENDFAT';
END
- $text .= $Object::Remote::FatNode::DATA;
+ $text .= do { no warnings 'once'; $Object::Remote::FatNode::DATA };
$text .= "ENDFAT\n";
$text .= <<'END';
eval $Object::Remote::FatNode::DATA;
+die $@ if $@;
END
$text .= "__END__\n";
return $text;