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 child_pid => (is => 'ro');
36 has _receive_data_buffer => (is => 'ro', default => sub { my $x = ''; \$x });
38 has local_objects_by_id => (is => 'ro', default => sub { {} });
40 has remote_objects_by_id => (is => 'ro', default => sub { {} });
45 _deserialize => 'decode',
51 weaken(my $self = shift);
52 my $remotes = $self->remote_objects_by_id;
53 JSON::PP->new->filter_json_single_key_object(
54 __remote_object__ => sub {
56 return bless({}, 'Object::Remote::Null') if $id eq 'NULL';
59 or Object::Remote->new(connection => $self, id => $id)
66 my ($self, $remote) = @_;
67 weaken($self->remote_objects_by_id->{$remote->id} = $remote);
73 delete $self->remote_objects_by_id->{$id};
74 $self->_send([ free => $id ]);
78 my ($self, $type, @call) = @_;
80 unshift @call, $type => my $future = CPS::Future->new;
88 my ($self, $type, @call) = @_;
90 unshift @call, $type => { __remote_object__ => 'NULL' };
96 my ($self, $to_send) = @_;
98 print { $self->send_to_fh } $self->_serialize($to_send)."\n";
102 my ($self, $data) = @_;
105 my $flat = $self->_encode($self->_deobjectify($data));
106 warn "$$ >>> ${flat}\n" if $DEBUG;
109 my $err = $@; # won't get here if the eval doesn't die
110 # don't keep refs to new things
111 delete @{$self->local_objects_by_id}{@New_Ids};
112 die "Error serializing: $err";
117 my ($self, $data) = @_;
118 if (blessed($data)) {
119 my $id = refaddr($data);
120 $self->local_objects_by_id->{$id} ||= do {
121 push our(@New_Ids), $id;
124 return +{ __remote_object__ => $id };
125 } elsif (my $ref = ref($data)) {
126 if ($ref eq 'HASH') {
127 return +{ map +($_ => $self->_deobjectify($data->{$_})), keys %$data };
128 } elsif ($ref eq 'ARRAY') {
129 return [ map $self->_deobjectify($_), @$data ];
131 die "Can't collapse reftype $ref";
134 return $data; # plain scalar
137 sub _receive_data_from {
138 my ($self, $fh) = @_;
139 my $rb = $self->_receive_data_buffer;
140 if (sysread($fh, $$rb, 1024, length($$rb)) > 0) {
141 while ($$rb =~ s/^(.*)\n//) {
150 my ($self, $flat) = @_;
151 warn "$$ <<< $flat\n" if $DEBUG;
152 my ($type, @rest) = eval { @{$self->_deserialize($flat)} }
153 or do { warn "Deserialize failed for ${flat}: $@"; return };
154 eval { $self->${\"receive_${type}"}(@rest); 1 }
155 or do { warn "Receive failed for ${flat}: $@"; return };
160 my ($self, $id) = @_;
161 delete $self->local_objects_by_id->{$id}
162 or warn "Free: no such object $id";
167 my ($self, $future, $id, @rest) = @_;
168 $future->{method} = 'call_discard_free';
169 my $local = $self->local_objects_by_id->{$id}
170 or do { $future->fail("No such object $id"); return };
171 $self->_invoke($future, $local, @rest);
174 sub receive_call_free {
175 my ($self, $future, $id, @rest) = @_;
176 $self->receive_call($future, $id, @rest);
177 $self->receive_free($id);
180 sub receive_class_call {
181 my ($self, $future, $class, @rest) = @_;
182 $future->{method} = 'call_discard_free';
183 eval { use_module($class) }
184 or do { $future->fail("Error loading ${class}: $@"); return };
185 $self->_invoke($future, $class, @rest);
189 my ($self, $future, $local, $method, @args) = @_;
190 eval { $future->done(scalar $local->$method(@args)); 1 }
191 or do { $future->fail($@); return; };
196 my ($self, $gd) = @_;
198 Object::Remote->current_loop
200 handle => $self->receive_from_fh,