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 {

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

                        $ENV{FREY_NO_LOG} = 1;
                        my $cmd = "perl -c $0";
                        warn "# check config with $cmd";
                        if ( system($cmd) == 0 ) {
                                $req->print( "\r\n" );
                                my $server = Frey::Server->new;
                                $server->load_config;
                                $req->print( "\r\n" );
                                Module::Reload->check;
                                $req->print( "\r\n" );
                                $req->print( refresh( $1, 1 ) );
                                $req->print( "\r\n" );
                                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 ) );
                        $req->print( "\r\n" );
                        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{/([^/]+)/(\w*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 } );
                        $f->status_parts;
                        if ( my $html = $f->html ) {
                                warn "## html ",length($html)," bytes";
                                $req->print( $html );
                        } else {
                                confess "no output from $f";
                        }
                } else {
                        confess "# can't call request on nothing!";
                }

        };

        if ( $@ ) {
                warn "SERVER ERROR: $@";
#               $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>\r\n\r\n} );
#               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->print( "\r\n" ); # flush
                $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;
  }
}

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
}

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	if ( $path =~ m{/reload(.*)} ) {
72	dpavlin	542
73			$ENV{FREY_NO_LOG} = 1;
74			my $cmd = "perl -c $0";
75			warn "# check config with $cmd";
76			if ( system($cmd) == 0 ) {
77	dpavlin	581	$req->print( "\r\n" );
78			my $server = Frey::Server->new;
79			$server->load_config;
80			$req->print( "\r\n" );
81	dpavlin	542	Module::Reload->check;
82	dpavlin	581	$req->print( "\r\n" );
83	dpavlin	542	$req->print( refresh( $1, 1 ) );
84	dpavlin	581	$req->print( "\r\n" );
85	dpavlin	542	warn "# reload done";
86			return;
87			} else {
88			warn "ERROR: $?";
89			}
90			$ENV{FREY_NO_LOG} = 0;
91
92	dpavlin	477	} elsif ( $path =~ m{/exit(.*)} ) {
93			# FIXME do we need some kind of check here for production? :-)
94			# ./bin/dev.sh will restart us during development
95	dpavlin	533	$req->print( refresh( $1, 2 ) );
96	dpavlin	581	$req->print( "\r\n" );
97	dpavlin	477	exit;
98	dpavlin	429	}
99	dpavlin	66
100	dpavlin	429	# warn $req->request->header('User_Agent');
101	dpavlin	292
102	dpavlin	429	my %params = $req->params;
103			my $html;
104	dpavlin	292
105	dpavlin	429	sub rest2class {
106			my $class = shift;
107			$class =~ s/-/::/; # sigh!
108			return $class;
109			}
110	dpavlin	277
111	dpavlin	429
112	dpavlin	114	my $f;
113	dpavlin	66
114	dpavlin	407	my $editor = Frey::Editor->new;
115	dpavlin	223
116	dpavlin	421	# shared run params
117			my $run = {
118			request_url => $req->request->url,
119	dpavlin	518	debug => 1,
120	dpavlin	421	};
121
122	dpavlin	292	if (
123			$path =~ m{/Frey[:-]+ObjectBrowser}
124			) {
125	dpavlin	277	$f = Frey::ObjectBrowser->new( fey_class => $params{class} );
126			$f->request( $req );
127	dpavlin	292	} elsif (
128			$path =~ m{/Frey[:-]+ObjectDesigner}
129			) {
130	dpavlin	277	$f = Frey::ObjectDesigner->new( fey_class => $params{class} );
131			$f->request( $req );
132	dpavlin	407	} elsif ( $path =~ $editor->url_regex ) {
133			$req->print( $editor->command( $path ) );
134			system( $editor->command( $path ) );
135	dpavlin	346	return;
136			} elsif (
137	dpavlin	581	$path =~ m{/([^/]+)/(\w*as_\w+)/?([^/]+)?}
138	dpavlin	292	) {
139			my $class = rest2class $1;
140	dpavlin	421	warn "# run $path -> $class $2";
141			$run->{format} = $3 if $3;
142	dpavlin	507	$params{request_url} = $req->request->url;
143	dpavlin	571	$req->print( "\r\n\r\n" ); # send something to browser so we don't time-out
144	dpavlin	421	$f = Frey::Run->new( class => $class, params => \%params, run => $2, %$run );
145	dpavlin	292	} elsif (
146			$path =~ m{/([^/]+)/?$}
147			) {
148			my $class = rest2class $1;
149			warn "# introspect $class";
150	dpavlin	421	$f = Frey::Run->new( class => 'Frey::Introspect', params => { class => $class }, %$run );
151	dpavlin	121	} else {
152	dpavlin	421	$f = Frey::Run->new( class => 'Frey::ClassBrowser', %$run );
153	dpavlin	66	}
154
155	dpavlin	277	if ( $f ) {
156	dpavlin	519	$f->clean_status;
157			$f->add_status( { request => $req } );
158	dpavlin	581	$f->status_parts;
159			if ( my $html = $f->html ) {
160			warn "## html ",length($html)," bytes";
161	dpavlin	536	$req->print( $html );
162	dpavlin	581	} else {
163	dpavlin	589	confess "no output from $f";
164	dpavlin	581	}
165	dpavlin	277	} else {
166	dpavlin	589	confess "# can't call request on nothing!";
167	dpavlin	277	}
168
169	dpavlin	66	};
170
171			if ( $@ ) {
172	dpavlin	581	warn "SERVER ERROR: $@";
173			# $req->conn->send_error( 404 ); # FIXME this should probably be 500, but we can't ship page with it
174			$req->print( qq{<pre class="frey-error">$@<pre>\r\n\r\n} );
175	dpavlin	190	# Carp::REPL::repl;
176	dpavlin	53	}
177
178	dpavlin	37	# If this is a request for the pushtream, then give them that
179			if($path =~ /pushstream/) {
180			pushstream($req);
181			}
182	dpavlin	121
183	dpavlin	37	# If they are sending us a message, we give them a thread for that too
184			if($path =~ /sendmessage/) {
185			send_message($req);
186			}
187	dpavlin	2
188	dpavlin	536	if ( $req->conn ) {
189	dpavlin	589	$req->print( "\r\n" ); # flush
190	dpavlin	520	$req->conn->close;
191			warn "## close connection: $@";
192			}
193	dpavlin	2	}
194
195			# Here we accept a connection to the browser, and keep it open. Meanwhile we
196			# watch the global $got_message variable, and when it gets touched we send off
197			# the list of messages through the held-open connection. Then we let the
198			# browser open a new connection and begin again.
199			sub pushstream {
200			my ($req) = @_;
201			# Set up watch event -- this will be triggered when $got_message is written
202			my $w = Coro::Event->var(var => \$got_message, poll => 'w');
203			while(1) {
204			print STDERR "** GOT MESSAGE, SENDING **\n";
205			my $log = join "<br>", @messages;
206			$req->print($log);
207			$req->next;
208			print STDERR "** Waiting for got_message indicator **\n";
209			$w->next;
210			}
211			}
212
213
214			# Watch for the user to send us a message. As soon as we get it, we add it to
215			# our list of messages and touch the $got_message flag to let all the
216			# pushstreams know.
217			sub send_message {
218			my ($req) = @_;
219			while(1) {
220			my $msg = $req->param('message');
221			my $name = $req->param('username');
222			if($msg) {
223			unshift @messages, "$name: $msg";
224			pop @messages if $#messages > 15; # Only keep the recent 15 messages
225			}
226			$got_message = 1;
227			$req->print("Got it!");
228			$req->next;
229			}
230			}
231
232	dpavlin	581	sub refresh {
233			my ( $url, $time ) = @_;
234			$url \|\|= '/';
235			$time \|\|= 1;
236			warn "# refresh $url";
237			qq\|
238			<html>
239			<head>
240			<META HTTP-EQUIV="Refresh" CONTENT="$time; URL=$url"></META>
241			</head>
242			<body>
243			Refresh <a href="$url"><tt>$url</tt></a> in $time sec
244			</body>
245			</html>
246			\n\r\n\r
247			\|; # XXX newlines at end are important to flush content to browser
248			}
249
250	dpavlin	25	1;