lib/Frey/Server.pm

package Frey::Server;

use Moose;

use Continuity;
#use Continuity::REPL;
use Continuity::Widget::DomNode;
use Data::Dump qw/dump/;

use Frey;
use Frey::Introspect;
use Frey::ObjectBrowser;

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;

sub run {
        $server = Continuity->new(
                port => 16001,
                path_session => 1,
                cookie_session => 'sid',
                callback => \&main,
                debug_level => 1,
                staticp => sub { $_[0]->url =~ m/\.(jpg|jpeg|gif|png|css|ico|js|html?)$/ },
        );
        $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 );

        eval {

                if ( $path =~ m!/~/([^/]+)(?:/([^/]*))?! ) {
                        my $f = Frey::Introspect->new( package => $1 );
                        $f->html( $req );
                }

                if ( $path =~ m!/ob/([^/]+)(?:/([^/]*))?! ) {
                        my $f = Frey::ObjectBrowser->new;
                        $f->html( $req );
                }

        };

        if ( $@ ) {
                warn $@;
                #$req->conn->send_error( 404 ); # FIXME this should probably be 500, but we can't ship page with it
                $req->print( qq{<pre class="error">$@<pre>} );
                $req->next;
        }

        # 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);
        }

        my $f = Frey->new;
        my $classes = Continuity::Widget::DomNode->create(
                ul => [
                        map {
                                warn dump( $_ );
                                my ( $package, $path ) = %$_;
                                ( li => [
                                        a => { href => '/~/' . $package . '/' } => [ $package ],
                                        ' ',
                                        a => { href => '/ob/' . $package } => [ 'browse' ],
                                        " <tt>$path</tt>"
                                ] )
                        } @{ $f->classes }
                ],
        )->to_string;
        $req->print( $classes );
}

# 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;
  }
}

1;
1	package Frey::Server;
2
3	use Moose;
4
5	use Continuity;
6	#use Continuity::REPL;
7	use Continuity::Widget::DomNode;
8	use Data::Dump qw/dump/;
9
10	use Frey;
11	use Frey::Introspect;
12	use Frey::ObjectBrowser;
13
14	my @messages; # Global (shared) list of messages
15	my $got_message; # Flag to indicate that there is a new message to display
16
17	use vars qw( $repl $server );
18
19	#$repl = Continuity::REPL->new;
20
21	sub run {
22	$server = Continuity->new(
23	port => 16001,
24	path_session => 1,
25	cookie_session => 'sid',
26	callback => \&main,
27	debug_level => 1,
28	staticp => sub { $_[0]->url =~ m/\.(jpg\|jpeg\|gif\|png\|css\|ico\|js\|html?)$/ },
29	);
30	$server->loop;
31	}
32
33	# This is the main entrypoint. We are looking for one of three things -- a
34	# pushstream, a sent message, or a request for the main HTML. We delegate each
35	# of these cases, none of which will return (they all loop forever).
36	sub main {
37	my ($req) = @_;
38
39	my $path = $req->request->url->path;
40	warn "REQUEST: $path\n";
41
42	warn $req->request->header('User_Agent');
43	#warn dump( $req );
44
45	eval {
46
47	if ( $path =~ m!/~/([^/]+)(?:/([^/]*))?! ) {
48	my $f = Frey::Introspect->new( package => $1 );
49	$f->html( $req );
50	}
51
52	if ( $path =~ m!/ob/([^/]+)(?:/([^/]*))?! ) {
53	my $f = Frey::ObjectBrowser->new;
54	$f->html( $req );
55	}
56
57	};
58
59	if ( $@ ) {
60	warn $@;
61	#$req->conn->send_error( 404 ); # FIXME this should probably be 500, but we can't ship page with it
62	$req->print( qq{<pre class="error">$@<pre>} );
63	$req->next;
64	}
65
66	# If this is a request for the pushtream, then give them that
67	if($path =~ /pushstream/) {
68	pushstream($req);
69	}
70
71	# If they are sending us a message, we give them a thread for that too
72	if($path =~ /sendmessage/) {
73	send_message($req);
74	}
75
76	my $f = Frey->new;
77	my $classes = Continuity::Widget::DomNode->create(
78	ul => [
79	map {
80	warn dump( $_ );
81	my ( $package, $path ) = %$_;
82	( li => [
83	a => { href => '/~/' . $package . '/' } => [ $package ],
84	' ',
85	a => { href => '/ob/' . $package } => [ 'browse' ],
86	" <tt>$path</tt>"
87	] )
88	} @{ $f->classes }
89	],
90	)->to_string;
91	$req->print( $classes );
92	}
93
94	# Here we accept a connection to the browser, and keep it open. Meanwhile we
95	# watch the global $got_message variable, and when it gets touched we send off
96	# the list of messages through the held-open connection. Then we let the
97	# browser open a new connection and begin again.
98	sub pushstream {
99	my ($req) = @_;
100	# Set up watch event -- this will be triggered when $got_message is written
101	my $w = Coro::Event->var(var => \$got_message, poll => 'w');
102	while(1) {
103	print STDERR "** GOT MESSAGE, SENDING **\n";
104	my $log = join "<br>", @messages;
105	$req->print($log);
106	$req->next;
107	print STDERR "** Waiting for got_message indicator **\n";
108	$w->next;
109	}
110	}
111
112
113	# Watch for the user to send us a message. As soon as we get it, we add it to
114	# our list of messages and touch the $got_message flag to let all the
115	# pushstreams know.
116	sub send_message {
117	my ($req) = @_;
118	while(1) {
119	my $msg = $req->param('message');
120	my $name = $req->param('username');
121	if($msg) {
122	unshift @messages, "$name: $msg";
123	pop @messages if $#messages > 15; # Only keep the recent 15 messages
124	}
125	$got_message = 1;
126	$req->print("Got it!");
127	$req->next;
128	}
129	}
130
131	1;