d294517a725fed577e977a50cf11aca7fd3d7b17
[scpubgit/Object-Remote.git] / lib / Object / Remote / Role / Connector.pm
1 package Object::Remote::Role::Connector;
2
3 use Module::Runtime qw(use_module);
4 use Object::Remote::Future;
5 use Object::Remote::Logging qw(:log :dlog router);
6 use Moo::Role;
7
8 requires '_open2_for';
9
10 has timeout => (is => 'ro', default => sub { 10 });
11
12 BEGIN { router()->exclude_forwarding; }
13
14 sub connect {
15   my $self = shift;
16   Dlog_debug { "Preparing to create connection with args of: $_" } @_;
17   my ($send_to_fh, $receive_from_fh, $child_pid) = $self->_open2_for(@_);
18   my $channel = use_module('Object::Remote::ReadChannel')->new(
19     fh => $receive_from_fh
20   );
21   return future {
22     log_trace { "Initializing connection for child pid '$child_pid'" };
23     my $f = shift;
24     $channel->on_line_call(sub {
25       if ($_[0] eq "Shere") {
26         log_trace { "Received 'Shere' from child pid '$child_pid'; setting done handler to create connection" };
27         $f->done(
28           use_module('Object::Remote::Connection')->new(
29             send_to_fh => $send_to_fh,
30             read_channel => $channel,
31             child_pid => $child_pid,
32           )
33         );
34       } else {
35         log_warn { "'Shere' was not found in connection data for child pid '$child_pid'" };
36         $f->fail("Expected Shere from remote but received: $_[0]");
37       }
38       undef($channel);
39     });
40     $channel->on_close_call(sub {
41       log_trace { "Connection has been closed" };
42       $f->fail("Channel closed without seeing Shere: $_[0]");
43       undef($channel);
44     });
45     log_trace { "initialized events on channel for child pid '$child_pid'; creating timeout" };
46     Object::Remote->current_loop
47                   ->watch_time(
48                       after => $self->timeout,
49                       code => sub {
50                         Dlog_trace {"Connection timeout timer has fired for child pid '$child_pid'; is_ready: $_" } $f->is_ready;
51                         unless($f->is_ready) {
52                             log_warn { "Connection with child pid '$child_pid' has timed out" };
53                             $f->fail("Connection timed out") unless $f->is_ready;
54                         }
55                         undef($channel);
56                         
57                       }
58                     );
59     log_trace { "connection for child pid '$child_pid' has been initialized" }; 
60     $f;
61   }
62 }
63
64 1;