lib/Frey/Server.pm

#!/usr/bin/perl

# server of yet unnamed framework

use warnings;
use strict;

use lib 'lib';

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',
);
$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 = $req->request->url->path;
  print STDERR "Path: '$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 the base page
  send_base_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_base_page {
  my ($req) = @_;
  while(1) {
        warn "param = ",dump($req->param);

        my $id = $req->param('id');
#       $id = 1 unless $id =~ m/^\d+$/;

        use Strix::User;
        my $user = Strix::User->new( id => $id );

        if ( ! $user ) {
                $req->conn->send_status_line( 500, "user $id" );
                $req->print( "Can't find user with id $id" );
        } else {
                $req->print( HTML->view( 'user', $user ) );
        }

=for later
    $req->print(qq{
      <html>
        <head>
          <title>Chat!</title>
          <script src="jquery.js" type="text/javascript"></script>
          <script src="chat-ajax-push.js" type="text/javascript"></script>
        </head>
        <body>
          <form id=f>
          <input type=text id=username name=usernamename size=10>
          <input type=text id=message name=message size=50>
          <input type=submit name="sendbutton" value="Send" id="sendbutton">
          <span id=status></span>
          </form>
          <br>
          <div id=log>-- no messages yet --</div>
        </body>
      </html>
    });
=cut
    $req->next;

        Module::Refresh->refresh;
  }
}


1	#!/usr/bin/perl
2
3	# server of yet unnamed framework
4
5	use warnings;
6	use strict;
7
8	use lib 'lib';
9
10	use Continuity;
11	use Continuity::REPL;
12	use Data::Dump qw/dump/;
13
14	use HTML;
15
16	my @messages; # Global (shared) list of messages
17	my $got_message; # Flag to indicate that there is a new message to display
18
19	use vars qw( $repl $server );
20	$repl = Continuity::REPL->new;
21
22	$server = Continuity->new(
23	port => 16001,
24	path_session => 1,
25	cookie_session => 'sid',
26	);
27	$server->debug_level( 2 );
28
29	$server->loop;
30
31	# This is the main entrypoint. We are looking for one of three things -- a
32	# pushstream, a sent message, or a request for the main HTML. We delegate each
33	# of these cases, none of which will return (they all loop forever).
34	sub main {
35	my ($req) = @_;
36
37	my $path = $req->request->url->path;
38	print STDERR "Path: '$path'\n";
39
40	warn $req->request->header('User_Agent');
41	#warn dump( $req );
42
43	# If this is a request for the pushtream, then give them that
44	if($path =~ /pushstream/) {
45	pushstream($req);
46	}
47
48	# If they are sending us a message, we give them a thread for that too
49	if($path =~ /sendmessage/) {
50	send_message($req);
51	}
52
53	# Otherwise, lets give them the base page
54	send_base_page($req);
55	}
56
57	# Here we accept a connection to the browser, and keep it open. Meanwhile we
58	# watch the global $got_message variable, and when it gets touched we send off
59	# the list of messages through the held-open connection. Then we let the
60	# browser open a new connection and begin again.
61	sub pushstream {
62	my ($req) = @_;
63	# Set up watch event -- this will be triggered when $got_message is written
64	my $w = Coro::Event->var(var => \$got_message, poll => 'w');
65	while(1) {
66	print STDERR "** GOT MESSAGE, SENDING **\n";
67	my $log = join "<br>", @messages;
68	$req->print($log);
69	$req->next;
70	print STDERR "** Waiting for got_message indicator **\n";
71	$w->next;
72	}
73	}
74
75
76	# Watch for the user to send us a message. As soon as we get it, we add it to
77	# our list of messages and touch the $got_message flag to let all the
78	# pushstreams know.
79	sub send_message {
80	my ($req) = @_;
81	while(1) {
82	my $msg = $req->param('message');
83	my $name = $req->param('username');
84	if($msg) {
85	unshift @messages, "$name: $msg";
86	pop @messages if $#messages > 15; # Only keep the recent 15 messages
87	}
88	$got_message = 1;
89	$req->print("Got it!");
90	$req->next;
91	}
92	}
93
94	# This isn't a pushstream, nor a new message. It is just the main page. We loop
95	# in case they ask for it multiple times :)
96	sub send_base_page {
97	my ($req) = @_;
98	while(1) {
99	warn "param = ",dump($req->param);
100
101	my $id = $req->param('id');
102	# $id = 1 unless $id =~ m/^\d+$/;
103
104	use Strix::User;
105	my $user = Strix::User->new( id => $id );
106
107	if ( ! $user ) {
108	$req->conn->send_status_line( 500, "user $id" );
109	$req->print( "Can't find user with id $id" );
110	} else {
111	$req->print( HTML->view( 'user', $user ) );
112	}
113
114	=for later
115	$req->print(qq{
116	<html>
117	<head>
118	<title>Chat!</title>
119	<script src="jquery.js" type="text/javascript"></script>
120	<script src="chat-ajax-push.js" type="text/javascript"></script>
121	</head>
122	<body>
123	<form id=f>
124	<input type=text id=username name=usernamename size=10>
125	<input type=text id=message name=message size=50>
126	<input type=submit name="sendbutton" value="Send" id="sendbutton">
127	<span id=status></span>
128	</form>
129	<br>
130	<div id=log>-- no messages yet --</div>
131	</body>
132	</html>
133	});
134	=cut
135	$req->next;
136
137	Module::Refresh->refresh;
138	}
139	}
140
141