lib/Frey/Server.pm

package Frey::Server;

use strict;
use warnings;

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

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

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

        if($path =~ m!^/ob!) {
                Frey::ObjectBrowser->new( req => $req )->html;
        }

        # 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) = @_;
        my $templates = Template::Declare->templates;
        while(1) {
                warn "param = ",dump($req->param);
                my $path = $req->request->url->path;

                my $html;

                if ( $path =~ m/::/ ) {
                        my ( undef, $module, $method ) = split(m!/!, $path, 3);

                        if ( ! defined( $templates->{$module} ) ) {
                                $req->conn->send_status_line( 404, "$module" );
                                $html = "Package $module not found";
                        } elsif ( ! $method ) {
                                $html = Frey::HTML->page( 'package-templates', $req, $module );
                        } elsif ( grep(/^\Q$method\E$/, @{ $templates->{$module} }) ) {
                                $html = Frey::HTML->page( $method, $req );
                        } else {
                                $req->conn->send_status_line( 404, "$module $method" );
                                $html = "Package $module doesn't have $method";
                        }
                } else {
                        warn "fallback to status page\n";
                        $html = Frey::HTML->page( 'status' );
                }

                $req->print( $html );
                warn ">> ",length( $html ), " bytes\n";
                $req->next;
        }
}

1;
1	package Frey::Server;
2
3	use strict;
4	use warnings;
5
6	use Continuity;
7	#use Continuity::REPL;
8	use Continuity::Widget::DomNode;
9	use Data::Dump qw/dump/;
10
11	use base 'Frey';
12	use Frey::HTML;
13	use Frey::ObjectBrowser;
14
15	my @messages; # Global (shared) list of messages
16	my $got_message; # Flag to indicate that there is a new message to display
17
18	use vars qw( $repl $server );
19
20	#$repl = Continuity::REPL->new;
21	$server = Continuity->new(
22	port => 16001,
23	path_session => 1,
24	cookie_session => 'sid',
25	callback => \&main,
26	debug_level => 1,
27	staticp => sub { $_[0]->url =~ m/\.(jpg\|jpeg\|gif\|png\|css\|ico\|js\|html?)$/ },
28	);
29
30	sub run {
31	$server->loop;
32	}
33
34	# This is the main entrypoint. We are looking for one of three things -- a
35	# pushstream, a sent message, or a request for the main HTML. We delegate each
36	# of these cases, none of which will return (they all loop forever).
37	sub main {
38	my ($req) = @_;
39
40	my $path = $req->request->url->path;
41	warn "REQUEST: $path\n";
42
43	warn $req->request->header('User_Agent');
44	#warn dump( $req );
45
46	if ( $path =~ m!/~/([^/]+)(?:/([^/]*))?! ) {
47	my $f = Frey::Introspect->new( package => $1 );
48	$f->html( $req );
49	}
50
51	# If this is a request for the pushtream, then give them that
52	if($path =~ /pushstream/) {
53	pushstream($req);
54	}
55
56	# If they are sending us a message, we give them a thread for that too
57	if($path =~ /sendmessage/) {
58	send_message($req);
59	}
60
61	if($path =~ m!^/ob!) {
62	Frey::ObjectBrowser->new( req => $req )->html;
63	}
64
65	# Otherwise, lets give them page
66	send_page($req);
67	}
68
69	# Here we accept a connection to the browser, and keep it open. Meanwhile we
70	# watch the global $got_message variable, and when it gets touched we send off
71	# the list of messages through the held-open connection. Then we let the
72	# browser open a new connection and begin again.
73	sub pushstream {
74	my ($req) = @_;
75	# Set up watch event -- this will be triggered when $got_message is written
76	my $w = Coro::Event->var(var => \$got_message, poll => 'w');
77	while(1) {
78	print STDERR "** GOT MESSAGE, SENDING **\n";
79	my $log = join "<br>", @messages;
80	$req->print($log);
81	$req->next;
82	print STDERR "** Waiting for got_message indicator **\n";
83	$w->next;
84	}
85	}
86
87
88	# Watch for the user to send us a message. As soon as we get it, we add it to
89	# our list of messages and touch the $got_message flag to let all the
90	# pushstreams know.
91	sub send_message {
92	my ($req) = @_;
93	while(1) {
94	my $msg = $req->param('message');
95	my $name = $req->param('username');
96	if($msg) {
97	unshift @messages, "$name: $msg";
98	pop @messages if $#messages > 15; # Only keep the recent 15 messages
99	}
100	$got_message = 1;
101	$req->print("Got it!");
102	$req->next;
103	}
104	}
105
106	# This isn't a pushstream, nor a new message. It is just the main page. We loop
107	# in case they ask for it multiple times :)
108	sub send_page {
109	my ($req) = @_;
110	my $templates = Template::Declare->templates;
111	while(1) {
112	warn "param = ",dump($req->param);
113	my $path = $req->request->url->path;
114
115	my $html;
116
117	if ( $path =~ m/::/ ) {
118	my ( undef, $module, $method ) = split(m!/!, $path, 3);
119
120	if ( ! defined( $templates->{$module} ) ) {
121	$req->conn->send_status_line( 404, "$module" );
122	$html = "Package $module not found";
123	} elsif ( ! $method ) {
124	$html = Frey::HTML->page( 'package-templates', $req, $module );
125	} elsif ( grep(/^\Q$method\E$/, @{ $templates->{$module} }) ) {
126	$html = Frey::HTML->page( $method, $req );
127	} else {
128	$req->conn->send_status_line( 404, "$module $method" );
129	$html = "Package $module doesn't have $method";
130	}
131	} else {
132	warn "fallback to status page\n";
133	$html = Frey::HTML->page( 'status' );
134	}
135
136	$req->print( $html );
137	warn ">> ",length( $html ), " bytes\n";
138	$req->next;
139	}
140	}
141
142	1;