X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?p=scpubgit%2FObject-Remote.git;a=blobdiff_plain;f=lib%2FObject%2FRemote%2FConnection.pm;h=21bcec455061ad756157128644a3f72fc3b4d36b;hp=c5bc9f673af6e22e7af162adac9798de1e782f8b;hb=12fb4a80d68ad14c18a35f60cc6d8a671f728ac9;hpb=11dbd4a02cce95ee689233d2b1d2392470518732

diff --git a/lib/Object/Remote/Connection.pm b/lib/Object/Remote/Connection.pm
index c5bc9f6..21bcec4 100644
--- a/lib/Object/Remote/Connection.pm
+++ b/lib/Object/Remote/Connection.pm
@@ -4,7 +4,10 @@ use Object::Remote::Future;
 use Object::Remote::Null;
 use Object::Remote::Handle;
 use Object::Remote::CodeContainer;
+use Object::Remote::GlobProxy;
+use Object::Remote::GlobContainer;
 use Object::Remote;
+use Symbol;
 use IO::Handle;
 use Module::Runtime qw(use_module);
 use Scalar::Util qw(weaken blessed refaddr);
@@ -18,29 +21,29 @@ has send_to_fh => (
   trigger => sub { $_[1]->autoflush(1) },
 );
 
-has receive_from_fh => (
+has read_channel => (
   is => 'ro', required => 1,
   trigger => sub {
-    my ($self, $fh) = @_;
+    my ($self, $ch) = @_;
     weaken($self);
-    Object::Remote->current_loop
-                  ->watch_io(
-                      handle => $fh,
-                      on_read_ready => sub { $self->_receive_data_from($fh) }
-                    );
+    $ch->on_line_call(sub { $self->_receive(@_) });
+    $ch->on_close_call(sub { $self->on_close->done(@_) });
   },
 );
 
-has on_close => (is => 'rw', default => sub { CPS::Future->new });
+has on_close => (
+  is => 'ro', default => sub { CPS::Future->new },
+  trigger => sub { 
+    my ($self, $f) = @_;
+    weaken($self);
+    $f->on_done(sub {
+      $self->_fail_outstanding("Connection lost: ".($f->get)[0]);
+    });
+  }
+);
 
 has child_pid => (is => 'ro');
 
-has ready_future => (is => 'lazy');
-
-sub _build_ready_future { CPS::Future->new }
-
-has _receive_data_buffer => (is => 'ro', default => sub { my $x = ''; \$x });
-
 has local_objects_by_id => (
   is => 'ro', default => sub { {} },
   coerce => sub { +{ %{$_[0]} } }, # shallow clone on the way in
@@ -53,6 +56,14 @@ has remote_objects_by_id => (
 
 has outstanding_futures => (is => 'ro', default => sub { {} });
 
+sub _fail_outstanding {
+  my ($self, $error) = @_;
+  my $outstanding = $self->outstanding_futures;
+  $_->fail($error) for values %$outstanding;
+  %$outstanding = ();
+  return;
+}
+
 has _json => (
   is => 'lazy',
   handles => {
@@ -81,6 +92,18 @@ sub _build__json {
       my $code_container = $self->_id_to_remote_object(@_);
       sub { $code_container->call(@_) };
     }
+  )->filter_json_single_key_object(
+    __scalar_ref__ => sub {
+      my $value = shift;
+      return \$value;
+    }
+  )->filter_json_single_key_object(
+    __glob_ref__ => sub {
+      my $glob_container = $self->_id_to_remote_object(@_);
+      my $handle = Symbol::gensym;
+      tie *$handle, 'Object::Remote::GlobProxy', $glob_container;
+      return $handle;
+    }
   );
 }
 
@@ -110,15 +133,38 @@ sub remote_object {
 
 sub connect {
   my ($self, $to) = @_;
-  return await_future($self->send(
-    class_call => 'Object::Remote', 0, connect => $to
-  ));
+  return await_future(
+    $self->send_class_call(0, 'Object::Remote', connect => $to)
+  );
 }
 
 sub remote_sub {
   my ($self, $sub) = @_;
   my ($pkg, $name) = $sub =~ m/^(.*)::([^:]+)$/;
-  return await_future($self->send(class_call => $pkg, 0, can => $name));
+  return await_future($self->send_class_call(0, $pkg, can => $name));
+}
+
+sub send_class_call {
+  my ($self, $ctx, @call) = @_;
+  $self->send(call => class_call_handler => $ctx => call => @call);
+}
+
+sub register_class_call_handler {
+  my ($self) = @_;
+  $self->local_objects_by_id->{'class_call_handler'} ||= do {
+    my $o = $self->new_class_call_handler;
+    $self->_local_object_to_id($o);
+    $o;
+  };
+}
+
+sub new_class_call_handler {
+  Object::Remote::CodeContainer->new(
+    code => sub {
+      my ($class, $method) = (shift, shift);
+      use_module($class)->$method(@_);
+    }
+  );
 }
 
 sub register_remote {
@@ -127,11 +173,6 @@ sub register_remote {
   return $remote;
 }
 
-sub await_ready {
-  my ($self) = @_;
-  await_future($self->ready_future);
-}
-
 sub send_free {
   my ($self, $id) = @_;
   delete $self->remote_objects_by_id->{$id};
@@ -141,11 +182,17 @@ sub send_free {
 sub send {
   my ($self, $type, @call) = @_;
 
-  unshift @call, $type => my $future = CPS::Future->new;
+  my $future = CPS::Future->new;
+  my $remote = $self->remote_objects_by_id->{$call[0]};
+
+  unshift @call, $type => $self->_local_object_to_id($future);
 
   my $outstanding = $self->outstanding_futures;
   $outstanding->{$future} = $future;
-  $future->on_ready(sub { delete $outstanding->{$future} });
+  $future->on_ready(sub {
+    undef($remote);
+    delete $outstanding->{$future}
+  });
 
   $self->_send(\@call);
 
@@ -155,7 +202,7 @@ sub send {
 sub send_discard {
   my ($self, $type, @call) = @_;
 
-  unshift @call, $type => { __remote_object__ => 'NULL' };
+  unshift @call, $type => 'NULL';
 
   $self->_send(\@call);
 }
@@ -163,14 +210,12 @@ sub send_discard {
 sub _send {
   my ($self, $to_send) = @_;
 
-  $self->await_ready;
-
   print { $self->send_to_fh } $self->_serialize($to_send)."\n";
 }
 
 sub _serialize {
   my ($self, $data) = @_;
-  local our @New_Ids;
+  local our @New_Ids = (-1);
   return eval {
     my $flat = $self->_encode($self->_deobjectify($data));
     warn "$$ >>> ${flat}\n" if $DEBUG;
@@ -187,7 +232,7 @@ sub _local_object_to_id {
   my ($self, $object) = @_;
   my $id = refaddr($object);
   $self->local_objects_by_id->{$id} ||= do {
-    push our(@New_Ids), $id;
+    push our(@New_Ids), $id if @New_Ids;
     $object;
   };
   return $id;
@@ -207,6 +252,12 @@ sub _deobjectify {
                  Object::Remote::CodeContainer->new(code => $data)
                );
       return +{ __remote_code__ => $id };
+    } elsif ($ref eq 'SCALAR') {
+      return +{ __scalar_ref__ => $$data };
+    } elsif ($ref eq 'GLOB') {
+      return +{ __glob_ref__ => $self->_local_object_to_id(
+        Object::Remote::GlobContainer->new(handle => $data)
+      ) };
     } else {
       die "Can't collapse reftype $ref";
     }
@@ -214,36 +265,6 @@ sub _deobjectify {
   return $data; # plain scalar
 }
 
-sub _receive_data_from {
-  my ($self, $fh) = @_;
-  my $rb = $self->_receive_data_buffer;
-  my $ready = $self->ready_future->is_ready;
-  my $len = sysread($fh, $$rb, 1024, length($$rb));
-  my $err = defined($len) ? undef : ": $!";
-  if (defined($len) and $len > 0) {
-    while ($$rb =~ s/^(.*)\n//) {
-      if ($ready) {
-        $self->_receive($1);
-      } else {
-        my $line = $1;
-        die "New remote container did not send Shere - got ${line}"
-          unless $line eq "Shere";
-        $self->ready_future->done;
-      }
-    }
-  } else {
-    Object::Remote->current_loop
-                  ->unwatch_io(
-                      handle => $self->receive_from_fh,
-                      on_read_ready => 1
-                    );
-    my $outstanding = $self->outstanding_futures;
-    $_->fail("Connection lost${err}") for values %$outstanding;
-    %$outstanding = ();
-    $self->on_close->done();
-  }
-}
-
 sub _receive {
   my ($self, $flat) = @_;
   warn "$$ <<< $flat\n" if $DEBUG;
@@ -262,7 +283,8 @@ sub receive_free {
 }
 
 sub receive_call {
-  my ($self, $future, $id, @rest) = @_;
+  my ($self, $future_id, $id, @rest) = @_;
+  my $future = $self->_id_to_remote_object($future_id);
   $future->{method} = 'call_discard_free';
   my $local = $self->local_objects_by_id->{$id}
     or do { $future->fail("No such object $id"); return };
@@ -275,14 +297,6 @@ sub receive_call_free {
   $self->receive_free($id);
 }
 
-sub receive_class_call {
-  my ($self, $future, $class, @rest) = @_;
-  $future->{method} = 'call_discard_free';
-  eval { use_module($class) }
-    or do { $future->fail("Error loading ${class}: $@"); return };
-  $self->_invoke($future, $class, @rest);
-}
-
 sub _invoke {
   my ($self, $future, $local, $ctx, $method, @args) = @_;
   if ($method =~ /^start::/) {
@@ -304,14 +318,14 @@ sub _invoke {
   return;
 }
 
-sub DEMOLISH {
-  my ($self, $gd) = @_;
-  return if $gd;
-  Object::Remote->current_loop
-                ->unwatch_io(
-                    handle => $self->receive_from_fh,
-                    on_read_ready => 1
-                  );
-}
-
 1;
+
+=head1 NAME
+
+Object::Remote::Connection - An underlying connection for L<Object::Remote>
+
+=head1 LAME
+
+Shipping prioritised over writing this part up. Blame mst.
+
+=cut