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);
13 is => 'ro', required => 1,
14 trigger => sub { $_[1]->autoflush(1) },
17 has receive_from_fh => (
18 is => 'ro', required => 1,
22 Object::Remote->current_loop
25 on_read_ready => sub { $self->_receive_data_from($fh) }
30 has _receive_data_buffer => (is => 'ro', default => sub { my $x = ''; \$x });
32 has local_objects_by_id => (is => 'ro', default => sub { {} });
34 has remote_objects_by_id => (is => 'ro', default => sub { {} });
39 _deserialize => 'decode',
45 weaken(my $self = shift);
46 my $remotes = $self->remote_objects_by_id;
47 JSON::PP->new->filter_json_single_key_object(
48 __remote_object__ => sub {
50 return bless({}, 'Object::Remote::Null') if $id eq 'NULL';
53 or Object::Remote->new(connection => $self, id => $id)
60 my ($self, $remote) = @_;
61 weaken($self->remote_objects_by_id->{$remote->id} = $remote);
67 delete $self->remote_objects_by_id->{$id};
68 $self->_send([ free => $id ]);
72 my ($self, $type, @call) = @_;
74 unshift @call, $type => my $future = CPS::Future->new;
82 my ($self, $type, @call) = @_;
84 unshift @call, $type => { __remote_object__ => 'NULL' };
90 my ($self, $to_send) = @_;
92 print { $self->send_to_fh } $self->_serialize($to_send)."\n";
96 my ($self, $data) = @_;
99 $self->_encode($self->_deobjectify($data))
101 my $err = $@; # won't get here if the eval doesn't die
102 # don't keep refs to new things
103 delete @{$self->local_objects_by_id}{@New_Ids};
104 die "Error serializing: $err";
109 my ($self, $data) = @_;
110 if (blessed($data)) {
111 my $id = refaddr($data);
112 $self->local_objects_by_id->{$id} ||= do {
113 push our(@New_Ids), $id;
116 return +{ __remote_object__ => $id };
117 } elsif (my $ref = ref($data)) {
118 if ($ref eq 'HASH') {
119 return +{ map +($_ => $self->_deobjectify($data->{$_})), keys %$data };
120 } elsif ($ref eq 'ARRAY') {
121 return [ map $self->_deobjectify($_), @$data ];
123 die "Can't collapse reftype $ref";
126 return $data; # plain scalar
129 sub _receive_data_from {
130 my ($self, $fh) = @_;
131 my $rb = $self->_receive_data_buffer;
132 if (sysread($fh, $$rb, 1024, length($$rb)) > 0) {
133 while ($$rb =~ s/^(.*)\n//) {
140 my ($self, $data) = @_;
141 my ($type, @rest) = eval { @{$self->_deserialize($data)} }
142 or do { warn "Deserialize failed for ${data}: $@"; return };
143 eval { $self->${\"receive_${type}"}(@rest); 1 }
144 or do { warn "Receive failed for ${data}: $@"; return };
149 my ($self, $id) = @_;
150 delete $self->local_objects_by_id->{$id}
151 or warn "Free: no such object $id";
156 my ($self, $future, $id, @rest) = @_;
157 $future->{method} = 'call_discard';
158 my $local = $self->local_objects_by_id->{$id}
159 or do { $future->fail("No such object $id"); return };
160 $self->_invoke($future, $local, @rest);
163 sub receive_class_call {
164 my ($self, $future, $class, @rest) = @_;
165 $future->{method} = 'call_discard';
166 eval { use_module($class) }
167 or do { $future->fail("Error loading ${class}: $@"); return };
168 $self->_invoke($future, $class, @rest);
172 my ($self, $future, $local, $method, @args) = @_;
173 eval { $future->done($local->$method(@args)); 1 }
174 or do { $future->fail($@); return; };
179 my ($self, $gd) = @_;
181 Object::Remote->current_loop
183 handle => $self->receive_from_fh,