lib/Frey/Server.pm

package Frey::Server;

use Moose;
extends 'Frey';
with 'Frey::Web';
with 'Frey::Config';

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

#use Carp::REPL; ## XXX it would be nice, but it breaks error reporting too much
use Frey::ClassLoader;
use Frey::Run;
use Frey::Editor;

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;

=head1 NAME

Frey::Server - Continuity based server for Frey

=head2 DESCRIPTION

This is one of pissible server implementations for Frey. In it's current stage, it's also most complete one.

=head2 run

  $o->run( $optional_port );

=cut

sub run {
        my ( $self, $port ) = @_;
        $server = Continuity->new(
                port => $port || $self->config->{port} || 16001,
                path_session => 1,
                cookie_session => 'sid',
                callback => \&main,
                debug_level => 2,
                staticp => sub {
                        $_[0]->url =~ m{^/+(static|var).*\.(jpg|jpeg|gif|png|css|ico|js|html?|xml|json|ya?ml)(\?.*)?$}
                },
        );
        $Module::Reload::Debug = 1; # auto if debug_level > 1
        Frey::ClassLoader->new->load_all_classes();
        $server->loop;
}

=head2 main

This is simple dispatcher for our server. Currently it's in flux and
documented only in source code.

=cut

sub main {
        my ($req) = @_;

#       $req->send_headers("X-Frey-VERSION: $Frey::VERSION");

        my $path = $req->request->url->path;

        eval {

                sub refresh {
                        my ( $url, $time ) = @_;
                        $url  ||= '/';
                        $time ||= 1;
                        warn "# refresh $url";
                        qq|
                                <html>
                                <head>
                                        <META HTTP-EQUIV="Refresh" CONTENT="$time; URL=$url"></META>
                                </head>
                                <body>
                                        Refresh <a href="$url"><tt>$url</tt></a> in $time sec
                                </body>
                                </html>
                                \n\r\n\r
                        |; # XXX newlines at end are important to flush content to browser
                }

                if ( $path =~ m{/reload(.*)} ) {

                        $ENV{FREY_NO_LOG} = 1;
                        my $cmd = "perl -c $0";
                        warn "# check config with $cmd";
                        if ( system($cmd) == 0 ) {
                                Frey::Server->new->load_config;
                                Module::Reload->check;
                                $req->print( refresh( $1, 1 ) );
                                warn "# reload done";
                                return;
                        } else {
                                warn "ERROR: $?";
                        }
                        $ENV{FREY_NO_LOG} = 0;
        
                } elsif ( $path =~ m{/exit(.*)} ) {
                        # FIXME do we need some kind of check here for production? :-)
                        # ./bin/dev.sh will restart us during development
                        $req->print( refresh( $1, 2 ) );
                        exit;
                }

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

                my %params = $req->params;
                my $html;

                sub rest2class {
                        my $class = shift;
                        $class =~ s/-/::/; # sigh!
                        return $class;
                }


                my $f;

                my $editor = Frey::Editor->new;

                # shared run params
                my $run = {
                        request_url => $req->request->url,
                        debug => 1,
                };

                if (
                        $path =~ m{/Frey[:-]+ObjectBrowser}
                ) {
                        $f = Frey::ObjectBrowser->new( fey_class => $params{class} );
                        $f->request( $req );
                } elsif (
                        $path =~ m{/Frey[:-]+ObjectDesigner}
                ) {
                        $f = Frey::ObjectDesigner->new( fey_class => $params{class} );
                        $f->request( $req );
                } elsif ( $path =~ $editor->url_regex ) {
                        $req->print( $editor->command( $path ) );
                        system( $editor->command( $path ) );
                        return;
                } elsif (
                        $path =~ m{/([^/]+)/(as_\w+)/?([^/]+)?}
                ) {
                        my $class = rest2class $1;
                        warn "# run $path -> $class $2";
                        $run->{format} = $3 if $3;
                        $params{request_url} = $req->request->url;
                        $req->print( "\r\n\r\n" ); # send something to browser so we don't time-out
                        $f = Frey::Run->new( class => $class, params => \%params, run => $2, %$run );
                } elsif (
                        $path =~ m{/([^/]+)/?$}
                ) {
                        my $class = rest2class $1;
                        warn "# introspect $class";
                        $f = Frey::Run->new( class => 'Frey::Introspect', params => { class => $class }, %$run );
                } else {
                        $f = Frey::Run->new( class => 'Frey::ClassBrowser', %$run );
                }

                if ( $f ) {
                        $f->clean_status;
                        $f->add_status( { request => $req } );
                        warn "## status ", dump( map { keys %$_ } $f->status );
                        my $html = $f->html;
                        die "no html output" unless $html;
                        warn "## html ",length($html)," bytes";
                        eval {
                                $req->print( $html );
                        };
                        die "can't send to wire: $@" if $@;
                } else {
                        warn "# can't call request on nothing!";
                }

        };

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

        # 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 ( $req->conn ) {
                $req->conn->close;
                warn "## close connection: $@";
        }
}

# 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	dpavlin	19	package Frey::Server;
2	dpavlin	2
3	dpavlin	55	use Moose;
4	dpavlin	341	extends 'Frey';
5	dpavlin	100	with 'Frey::Web';
6	dpavlin	341	with 'Frey::Config';
7	dpavlin	100
8	dpavlin	2	use Continuity;
9	dpavlin	36	#use Continuity::REPL;
10	dpavlin	2	use Data::Dump qw/dump/;
11
12	dpavlin	190	#use Carp::REPL; ## XXX it would be nice, but it breaks error reporting too much
13	dpavlin	101	use Frey::ClassLoader;
14	dpavlin	223	use Frey::Run;
15	dpavlin	407	use Frey::Editor;
16	dpavlin	23
17	dpavlin	2	my @messages; # Global (shared) list of messages
18			my $got_message; # Flag to indicate that there is a new message to display
19
20	dpavlin	10	use vars qw( $repl $server );
21	dpavlin	2
22	dpavlin	34	#$repl = Continuity::REPL->new;
23	dpavlin	37
24	dpavlin	182	=head1 NAME
25
26			Frey::Server - Continuity based server for Frey
27
28			=head2 DESCRIPTION
29
30			This is one of pissible server implementations for Frey. In it's current stage, it's also most complete one.
31
32			=head2 run
33
34			$o->run( $optional_port );
35
36			=cut
37
38	dpavlin	25	sub run {
39	dpavlin	103	my ( $self, $port ) = @_;
40	dpavlin	64	$server = Continuity->new(
41	dpavlin	341	port => $port \|\| $self->config->{port} \|\| 16001,
42	dpavlin	64	path_session => 1,
43			cookie_session => 'sid',
44			callback => \&main,
45	dpavlin	205	debug_level => 2,
46	dpavlin	523	staticp => sub {
47	dpavlin	526	$_[0]->url =~ m{^/+(static\|var).\.(jpg\|jpeg\|gif\|png\|css\|ico\|js\|html?\|xml\|json\|ya?ml)(\?.)?$}
48	dpavlin	523	},
49	dpavlin	64	);
50	dpavlin	205	$Module::Reload::Debug = 1; # auto if debug_level > 1
51	dpavlin	101	Frey::ClassLoader->new->load_all_classes();
52	dpavlin	25	$server->loop;
53			}
54	dpavlin	2
55	dpavlin	182	=head2 main
56
57			This is simple dispatcher for our server. Currently it's in flux and
58			documented only in source code.
59
60			=cut
61
62	dpavlin	2	sub main {
63	dpavlin	37	my ($req) = @_;
64	dpavlin	190
65	dpavlin	570	# $req->send_headers("X-Frey-VERSION: $Frey::VERSION");
66
67	dpavlin	37	my $path = $req->request->url->path;
68	dpavlin	2
69	dpavlin	429	eval {
70	dpavlin	120
71	dpavlin	477	sub refresh {
72	dpavlin	533	my ( $url, $time ) = @_;
73			$url \|\|= '/';
74			$time \|\|= 1;
75	dpavlin	477	warn "# refresh $url";
76			qq\|
77			<html>
78			<head>
79	dpavlin	533	<META HTTP-EQUIV="Refresh" CONTENT="$time; URL=$url"></META>
80	dpavlin	477	</head>
81			<body>
82	dpavlin	533	Refresh <a href="$url"><tt>$url</tt></a> in $time sec
83	dpavlin	477	</body>
84			</html>
85			\n\r\n\r
86			\|; # XXX newlines at end are important to flush content to browser
87			}
88	dpavlin	2
89	dpavlin	477	if ( $path =~ m{/reload(.*)} ) {
90	dpavlin	542
91			$ENV{FREY_NO_LOG} = 1;
92			my $cmd = "perl -c $0";
93			warn "# check config with $cmd";
94			if ( system($cmd) == 0 ) {
95			Frey::Server->new->load_config;
96			Module::Reload->check;
97			$req->print( refresh( $1, 1 ) );
98			warn "# reload done";
99			return;
100			} else {
101			warn "ERROR: $?";
102			}
103			$ENV{FREY_NO_LOG} = 0;
104
105	dpavlin	477	} elsif ( $path =~ m{/exit(.*)} ) {
106			# FIXME do we need some kind of check here for production? :-)
107			# ./bin/dev.sh will restart us during development
108	dpavlin	533	$req->print( refresh( $1, 2 ) );
109	dpavlin	477	exit;
110	dpavlin	429	}
111	dpavlin	66
112	dpavlin	429	# warn $req->request->header('User_Agent');
113	dpavlin	292
114	dpavlin	429	my %params = $req->params;
115			my $html;
116	dpavlin	292
117	dpavlin	429	sub rest2class {
118			my $class = shift;
119			$class =~ s/-/::/; # sigh!
120			return $class;
121			}
122	dpavlin	277
123	dpavlin	429
124	dpavlin	114	my $f;
125	dpavlin	66
126	dpavlin	407	my $editor = Frey::Editor->new;
127	dpavlin	223
128	dpavlin	421	# shared run params
129			my $run = {
130			request_url => $req->request->url,
131	dpavlin	518	debug => 1,
132	dpavlin	421	};
133
134	dpavlin	292	if (
135			$path =~ m{/Frey[:-]+ObjectBrowser}
136			) {
137	dpavlin	277	$f = Frey::ObjectBrowser->new( fey_class => $params{class} );
138			$f->request( $req );
139	dpavlin	292	} elsif (
140			$path =~ m{/Frey[:-]+ObjectDesigner}
141			) {
142	dpavlin	277	$f = Frey::ObjectDesigner->new( fey_class => $params{class} );
143			$f->request( $req );
144	dpavlin	407	} elsif ( $path =~ $editor->url_regex ) {
145			$req->print( $editor->command( $path ) );
146			system( $editor->command( $path ) );
147	dpavlin	346	return;
148			} elsif (
149	dpavlin	456	$path =~ m{/([^/]+)/(as_\w+)/?([^/]+)?}
150	dpavlin	292	) {
151			my $class = rest2class $1;
152	dpavlin	421	warn "# run $path -> $class $2";
153			$run->{format} = $3 if $3;
154	dpavlin	507	$params{request_url} = $req->request->url;
155	dpavlin	571	$req->print( "\r\n\r\n" ); # send something to browser so we don't time-out
156	dpavlin	421	$f = Frey::Run->new( class => $class, params => \%params, run => $2, %$run );
157	dpavlin	292	} elsif (
158			$path =~ m{/([^/]+)/?$}
159			) {
160			my $class = rest2class $1;
161			warn "# introspect $class";
162	dpavlin	421	$f = Frey::Run->new( class => 'Frey::Introspect', params => { class => $class }, %$run );
163	dpavlin	121	} else {
164	dpavlin	421	$f = Frey::Run->new( class => 'Frey::ClassBrowser', %$run );
165	dpavlin	66	}
166
167	dpavlin	277	if ( $f ) {
168	dpavlin	519	$f->clean_status;
169			$f->add_status( { request => $req } );
170			warn "## status ", dump( map { keys %$_ } $f->status );
171			my $html = $f->html;
172			die "no html output" unless $html;
173			warn "## html ",length($html)," bytes";
174	dpavlin	536	eval {
175			$req->print( $html );
176			};
177			die "can't send to wire: $@" if $@;
178	dpavlin	277	} else {
179			warn "# can't call request on nothing!";
180			}
181
182	dpavlin	66	};
183
184			if ( $@ ) {
185			warn $@;
186	dpavlin	220	$req->conn->send_error( 404 ); # FIXME this should probably be 500, but we can't ship page with it
187	dpavlin	350	$req->print( qq{<pre class="frey-error">$@<pre>} );
188	dpavlin	190	# Carp::REPL::repl;
189	dpavlin	53	}
190
191	dpavlin	37	# If this is a request for the pushtream, then give them that
192			if($path =~ /pushstream/) {
193			pushstream($req);
194			}
195	dpavlin	121
196	dpavlin	37	# If they are sending us a message, we give them a thread for that too
197			if($path =~ /sendmessage/) {
198			send_message($req);
199			}
200	dpavlin	2
201	dpavlin	536	if ( $req->conn ) {
202	dpavlin	520	$req->conn->close;
203			warn "## close connection: $@";
204			}
205	dpavlin	2	}
206
207			# Here we accept a connection to the browser, and keep it open. Meanwhile we
208			# watch the global $got_message variable, and when it gets touched we send off
209			# the list of messages through the held-open connection. Then we let the
210			# browser open a new connection and begin again.
211			sub pushstream {
212			my ($req) = @_;
213			# Set up watch event -- this will be triggered when $got_message is written
214			my $w = Coro::Event->var(var => \$got_message, poll => 'w');
215			while(1) {
216			print STDERR "** GOT MESSAGE, SENDING **\n";
217			my $log = join "<br>", @messages;
218			$req->print($log);
219			$req->next;
220			print STDERR "** Waiting for got_message indicator **\n";
221			$w->next;
222			}
223			}
224
225
226			# Watch for the user to send us a message. As soon as we get it, we add it to
227			# our list of messages and touch the $got_message flag to let all the
228			# pushstreams know.
229			sub send_message {
230			my ($req) = @_;
231			while(1) {
232			my $msg = $req->param('message');
233			my $name = $req->param('username');
234			if($msg) {
235			unshift @messages, "$name: $msg";
236			pop @messages if $#messages > 15; # Only keep the recent 15 messages
237			}
238			$got_message = 1;
239			$req->print("Got it!");
240			$req->next;
241			}
242			}
243
244	dpavlin	25	1;