1 package Object::Remote::Connection;
4 use Object::Remote::Null;
7 use Module::Runtime qw(use_module);
8 use Scalar::Util qw(weaken blessed refaddr);
9 use JSON::PP qw(encode_json);
15 is => 'ro', required => 1,
16 trigger => sub { $_[1]->autoflush(1) },
19 has receive_from_fh => (
20 is => 'ro', required => 1,
24 Object::Remote->current_loop
27 on_read_ready => sub { $self->_receive_data_from($fh) }
32 has on_close => (is => 'rw', default => sub {});
34 has _receive_data_buffer => (is => 'ro', default => sub { my $x = ''; \$x });
36 has local_objects_by_id => (is => 'ro', default => sub { {} });
38 has remote_objects_by_id => (is => 'ro', default => sub { {} });
43 _deserialize => 'decode',
49 weaken(my $self = shift);
50 my $remotes = $self->remote_objects_by_id;
51 JSON::PP->new->filter_json_single_key_object(
52 __remote_object__ => sub {
54 return bless({}, 'Object::Remote::Null') if $id eq 'NULL';
57 or Object::Remote->new(connection => $self, id => $id)
64 my ($self, $remote) = @_;
65 weaken($self->remote_objects_by_id->{$remote->id} = $remote);
71 delete $self->remote_objects_by_id->{$id};
72 $self->_send([ free => $id ]);
76 my ($self, $type, @call) = @_;
78 unshift @call, $type => my $future = CPS::Future->new;
86 my ($self, $type, @call) = @_;
88 unshift @call, $type => { __remote_object__ => 'NULL' };
94 my ($self, $to_send) = @_;
96 print { $self->send_to_fh } $self->_serialize($to_send)."\n";
100 my ($self, $data) = @_;
103 my $flat = $self->_encode($self->_deobjectify($data));
104 warn "$$ >>> ${flat}\n" if $DEBUG;
107 my $err = $@; # won't get here if the eval doesn't die
108 # don't keep refs to new things
109 delete @{$self->local_objects_by_id}{@New_Ids};
110 die "Error serializing: $err";
115 my ($self, $data) = @_;
116 if (blessed($data)) {
117 my $id = refaddr($data);
118 $self->local_objects_by_id->{$id} ||= do {
119 push our(@New_Ids), $id;
122 return +{ __remote_object__ => $id };
123 } elsif (my $ref = ref($data)) {
124 if ($ref eq 'HASH') {
125 return +{ map +($_ => $self->_deobjectify($data->{$_})), keys %$data };
126 } elsif ($ref eq 'ARRAY') {
127 return [ map $self->_deobjectify($_), @$data ];
129 die "Can't collapse reftype $ref";
132 return $data; # plain scalar
135 sub _receive_data_from {
136 my ($self, $fh) = @_;
137 my $rb = $self->_receive_data_buffer;
138 if (sysread($fh, $$rb, 1024, length($$rb)) > 0) {
139 while ($$rb =~ s/^(.*)\n//) {
148 my ($self, $flat) = @_;
149 warn "$$ <<< $flat\n" if $DEBUG;
150 my ($type, @rest) = eval { @{$self->_deserialize($flat)} }
151 or do { warn "Deserialize failed for ${flat}: $@"; return };
152 eval { $self->${\"receive_${type}"}(@rest); 1 }
153 or do { warn "Receive failed for ${flat}: $@"; return };
158 my ($self, $id) = @_;
159 delete $self->local_objects_by_id->{$id}
160 or warn "Free: no such object $id";
165 my ($self, $future, $id, @rest) = @_;
166 $future->{method} = 'call_discard_free';
167 my $local = $self->local_objects_by_id->{$id}
168 or do { $future->fail("No such object $id"); return };
169 $self->_invoke($future, $local, @rest);
172 sub receive_call_free {
173 my ($self, $future, $id, @rest) = @_;
174 $self->receive_call($future, $id, @rest);
175 $self->receive_free($id);
178 sub receive_class_call {
179 my ($self, $future, $class, @rest) = @_;
180 $future->{method} = 'call_discard_free';
181 eval { use_module($class) }
182 or do { $future->fail("Error loading ${class}: $@"); return };
183 $self->_invoke($future, $class, @rest);
187 my ($self, $future, $local, $method, @args) = @_;
188 eval { $future->done(scalar $local->$method(@args)); 1 }
189 or do { $future->fail($@); return; };
194 my ($self, $gd) = @_;
196 Object::Remote->current_loop
198 handle => $self->receive_from_fh,