lib/Frey/Server.pm

package Frey::Server;

use strict;
use warnings;

use Continuity;
use Continuity::REPL;
use Data::Dump qw/dump/;

use HTML;

my @messages;    # Global (shared) list of messages
my $got_message; # Flag to indicate that there is a new message to display

use vars qw( $repl $server );
$repl = Continuity::REPL->new;

$server = Continuity->new(
  port => 16001,
  path_session => 1,
  cookie_session => 'sid',
  callback => \&main,
);
$server->debug_level( 2 );

$server->loop;

# This is the main entrypoint. We are looking for one of three things -- a
# pushstream, a sent message, or a request for the main HTML. We delegate each
# of these cases, none of which will return (they all loop forever).
sub main {
  my ($req) = @_;
  
  my $path = $req->request->url->path;
  warn "REQUEST: $path\n";

        warn $req->request->header('User_Agent');
#warn dump( $req );

  # If this is a request for the pushtream, then give them that
  if($path =~ /pushstream/) {
        pushstream($req);
  }
  
  # If they are sending us a message, we give them a thread for that too
  if($path =~ /sendmessage/) {
        send_message($req);
  }

  # Otherwise, lets give them page
  send_page($req);
}

# Here we accept a connection to the browser, and keep it open. Meanwhile we
# watch the global $got_message variable, and when it gets touched we send off
# the list of messages through the held-open connection. Then we let the
# browser open a new connection and begin again.
sub pushstream {
  my ($req) = @_;
  # Set up watch event -- this will be triggered when $got_message is written
  my $w = Coro::Event->var(var => \$got_message, poll => 'w');
  while(1) {
    print STDERR "**** GOT MESSAGE, SENDING ****\n";
    my $log = join "<br>", @messages;
    $req->print($log);
    $req->next;
    print STDERR "**** Waiting for got_message indicator ****\n";
    $w->next;
  }
}


# Watch for the user to send us a message. As soon as we get it, we add it to
# our list of messages and touch the $got_message flag to let all the
# pushstreams know.
sub send_message {
  my ($req) = @_;
  while(1) {
    my $msg = $req->param('message');
    my $name = $req->param('username');
    if($msg) {
      unshift @messages, "$name: $msg";
      pop @messages if $#messages > 15; # Only keep the recent 15 messages
    }
    $got_message = 1;
    $req->print("Got it!");
    $req->next;
  }
}

# This isn't a pushstream, nor a new message. It is just the main page. We loop
# in case they ask for it multiple times :)
sub send_page {
  my ($req) = @_;
  while(1) {
        warn "param = ",dump($req->param);
        $req->print( HTML->view( 'status' ) );
    $req->next;
        Module::Refresh->refresh;
  }
}

1	package Frey::Server;
2
3	use strict;
4	use warnings;
5
6	use Continuity;
7	use Continuity::REPL;
8	use Data::Dump qw/dump/;
9
10	use HTML;
11
12	my @messages; # Global (shared) list of messages
13	my $got_message; # Flag to indicate that there is a new message to display
14
15	use vars qw( $repl $server );
16	$repl = Continuity::REPL->new;
17
18	$server = Continuity->new(
19	port => 16001,
20	path_session => 1,
21	cookie_session => 'sid',
22	callback => \&main,
23	);
24	$server->debug_level( 2 );
25
26	$server->loop;
27
28	# This is the main entrypoint. We are looking for one of three things -- a
29	# pushstream, a sent message, or a request for the main HTML. We delegate each
30	# of these cases, none of which will return (they all loop forever).
31	sub main {
32	my ($req) = @_;
33
34	my $path = $req->request->url->path;
35	warn "REQUEST: $path\n";
36
37	warn $req->request->header('User_Agent');
38	#warn dump( $req );
39
40	# If this is a request for the pushtream, then give them that
41	if($path =~ /pushstream/) {
42	pushstream($req);
43	}
44
45	# If they are sending us a message, we give them a thread for that too
46	if($path =~ /sendmessage/) {
47	send_message($req);
48	}
49
50	# Otherwise, lets give them page
51	send_page($req);
52	}
53
54	# Here we accept a connection to the browser, and keep it open. Meanwhile we
55	# watch the global $got_message variable, and when it gets touched we send off
56	# the list of messages through the held-open connection. Then we let the
57	# browser open a new connection and begin again.
58	sub pushstream {
59	my ($req) = @_;
60	# Set up watch event -- this will be triggered when $got_message is written
61	my $w = Coro::Event->var(var => \$got_message, poll => 'w');
62	while(1) {
63	print STDERR "** GOT MESSAGE, SENDING **\n";
64	my $log = join "<br>", @messages;
65	$req->print($log);
66	$req->next;
67	print STDERR "** Waiting for got_message indicator **\n";
68	$w->next;
69	}
70	}
71
72
73	# Watch for the user to send us a message. As soon as we get it, we add it to
74	# our list of messages and touch the $got_message flag to let all the
75	# pushstreams know.
76	sub send_message {
77	my ($req) = @_;
78	while(1) {
79	my $msg = $req->param('message');
80	my $name = $req->param('username');
81	if($msg) {
82	unshift @messages, "$name: $msg";
83	pop @messages if $#messages > 15; # Only keep the recent 15 messages
84	}
85	$got_message = 1;
86	$req->print("Got it!");
87	$req->next;
88	}
89	}
90
91	# This isn't a pushstream, nor a new message. It is just the main page. We loop
92	# in case they ask for it multiple times :)
93	sub send_page {
94	my ($req) = @_;
95	while(1) {
96	warn "param = ",dump($req->param);
97	$req->print( HTML->view( 'status' ) );
98	$req->next;
99	Module::Refresh->refresh;
100	}
101	}
102