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

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

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();
        $editor->switch_screen if $ENV{FREY_SWITCH_SCREEN};
        $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;

                # 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 ) );
                        $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	617	our $editor = Frey::Editor->new;
39
40	dpavlin	25	sub run {
41	dpavlin	103	my ( $self, $port ) = @_;
42	dpavlin	64	$server = Continuity->new(
43	dpavlin	341	port => $port \|\| $self->config->{port} \|\| 16001,
44	dpavlin	64	path_session => 1,
45			cookie_session => 'sid',
46			callback => \&main,
47	dpavlin	205	debug_level => 2,
48	dpavlin	523	staticp => sub {
49	dpavlin	526	$_[0]->url =~ m{^/+(static\|var).\.(jpg\|jpeg\|gif\|png\|css\|ico\|js\|html?\|xml\|json\|ya?ml)(\?.)?$}
50	dpavlin	523	},
51	dpavlin	64	);
52	dpavlin	205	$Module::Reload::Debug = 1; # auto if debug_level > 1
53	dpavlin	101	Frey::ClassLoader->new->load_all_classes();
54	dpavlin	617	$editor->switch_screen if $ENV{FREY_SWITCH_SCREEN};
55	dpavlin	25	$server->loop;
56			}
57	dpavlin	2
58	dpavlin	182	=head2 main
59
60			This is simple dispatcher for our server. Currently it's in flux and
61			documented only in source code.
62
63			=cut
64
65	dpavlin	2	sub main {
66	dpavlin	37	my ($req) = @_;
67	dpavlin	190
68	dpavlin	570	# $req->send_headers("X-Frey-VERSION: $Frey::VERSION");
69
70	dpavlin	37	my $path = $req->request->url->path;
71	dpavlin	2
72	dpavlin	429	eval {
73	dpavlin	120
74	dpavlin	477	if ( $path =~ m{/reload(.*)} ) {
75	dpavlin	542
76			$ENV{FREY_NO_LOG} = 1;
77			my $cmd = "perl -c $0";
78			warn "# check config with $cmd";
79			if ( system($cmd) == 0 ) {
80	dpavlin	581	$req->print( "\r\n" );
81			my $server = Frey::Server->new;
82			$server->load_config;
83			$req->print( "\r\n" );
84	dpavlin	542	Module::Reload->check;
85	dpavlin	581	$req->print( "\r\n" );
86	dpavlin	542	$req->print( refresh( $1, 1 ) );
87	dpavlin	581	$req->print( "\r\n" );
88	dpavlin	542	warn "# reload done";
89			return;
90			} else {
91			warn "ERROR: $?";
92			}
93			$ENV{FREY_NO_LOG} = 0;
94
95	dpavlin	477	} elsif ( $path =~ m{/exit(.*)} ) {
96			# FIXME do we need some kind of check here for production? :-)
97			# ./bin/dev.sh will restart us during development
98	dpavlin	533	$req->print( refresh( $1, 2 ) );
99	dpavlin	581	$req->print( "\r\n" );
100	dpavlin	477	exit;
101	dpavlin	429	}
102	dpavlin	66
103	dpavlin	429	# warn $req->request->header('User_Agent');
104	dpavlin	292
105	dpavlin	429	my %params = $req->params;
106			my $html;
107	dpavlin	292
108	dpavlin	429	sub rest2class {
109			my $class = shift;
110			$class =~ s/-/::/; # sigh!
111			return $class;
112			}
113	dpavlin	277
114	dpavlin	429
115	dpavlin	114	my $f;
116	dpavlin	66
117	dpavlin	421	# shared run params
118			my $run = {
119			request_url => $req->request->url,
120	dpavlin	518	debug => 1,
121	dpavlin	421	};
122
123	dpavlin	292	if (
124			$path =~ m{/Frey[:-]+ObjectBrowser}
125			) {
126	dpavlin	277	$f = Frey::ObjectBrowser->new( fey_class => $params{class} );
127			$f->request( $req );
128	dpavlin	292	} elsif (
129			$path =~ m{/Frey[:-]+ObjectDesigner}
130			) {
131	dpavlin	277	$f = Frey::ObjectDesigner->new( fey_class => $params{class} );
132			$f->request( $req );
133	dpavlin	407	} elsif ( $path =~ $editor->url_regex ) {
134			$req->print( $editor->command( $path ) );
135	dpavlin	617	$editor->command( $path );
136	dpavlin	346	return;
137			} elsif (
138	dpavlin	581	$path =~ m{/([^/]+)/(\w*as_\w+)/?([^/]+)?}
139	dpavlin	292	) {
140			my $class = rest2class $1;
141	dpavlin	421	warn "# run $path -> $class $2";
142			$run->{format} = $3 if $3;
143	dpavlin	507	$params{request_url} = $req->request->url;
144	dpavlin	571	$req->print( "\r\n\r\n" ); # send something to browser so we don't time-out
145	dpavlin	421	$f = Frey::Run->new( class => $class, params => \%params, run => $2, %$run );
146	dpavlin	292	} elsif (
147			$path =~ m{/([^/]+)/?$}
148			) {
149			my $class = rest2class $1;
150			warn "# introspect $class";
151	dpavlin	421	$f = Frey::Run->new( class => 'Frey::Introspect', params => { class => $class }, %$run );
152	dpavlin	121	} else {
153	dpavlin	421	$f = Frey::Run->new( class => 'Frey::ClassBrowser', %$run );
154	dpavlin	66	}
155
156	dpavlin	277	if ( $f ) {
157	dpavlin	519	$f->clean_status;
158			$f->add_status( { request => $req } );
159	dpavlin	581	$f->status_parts;
160			if ( my $html = $f->html ) {
161			warn "## html ",length($html)," bytes";
162	dpavlin	536	$req->print( $html );
163	dpavlin	581	} else {
164	dpavlin	589	confess "no output from $f";
165	dpavlin	581	}
166	dpavlin	277	} else {
167	dpavlin	589	confess "# can't call request on nothing!";
168	dpavlin	277	}
169
170	dpavlin	66	};
171
172			if ( $@ ) {
173	dpavlin	581	warn "SERVER ERROR: $@";
174			# $req->conn->send_error( 404 ); # FIXME this should probably be 500, but we can't ship page with it
175			$req->print( qq{<pre class="frey-error">$@<pre>\r\n\r\n} );
176	dpavlin	190	# Carp::REPL::repl;
177	dpavlin	53	}
178
179	dpavlin	37	# If this is a request for the pushtream, then give them that
180			if($path =~ /pushstream/) {
181			pushstream($req);
182			}
183	dpavlin	121
184	dpavlin	37	# If they are sending us a message, we give them a thread for that too
185			if($path =~ /sendmessage/) {
186			send_message($req);
187			}
188	dpavlin	2
189	dpavlin	536	if ( $req->conn ) {
190	dpavlin	589	$req->print( "\r\n" ); # flush
191	dpavlin	520	$req->conn->close;
192			warn "## close connection: $@";
193			}
194	dpavlin	2	}
195
196			# Here we accept a connection to the browser, and keep it open. Meanwhile we
197			# watch the global $got_message variable, and when it gets touched we send off
198			# the list of messages through the held-open connection. Then we let the
199			# browser open a new connection and begin again.
200			sub pushstream {
201			my ($req) = @_;
202			# Set up watch event -- this will be triggered when $got_message is written
203			my $w = Coro::Event->var(var => \$got_message, poll => 'w');
204			while(1) {
205			print STDERR "** GOT MESSAGE, SENDING **\n";
206			my $log = join "<br>", @messages;
207			$req->print($log);
208			$req->next;
209			print STDERR "** Waiting for got_message indicator **\n";
210			$w->next;
211			}
212			}
213
214
215			# Watch for the user to send us a message. As soon as we get it, we add it to
216			# our list of messages and touch the $got_message flag to let all the
217			# pushstreams know.
218			sub send_message {
219			my ($req) = @_;
220			while(1) {
221			my $msg = $req->param('message');
222			my $name = $req->param('username');
223			if($msg) {
224			unshift @messages, "$name: $msg";
225			pop @messages if $#messages > 15; # Only keep the recent 15 messages
226			}
227			$got_message = 1;
228			$req->print("Got it!");
229			$req->next;
230			}
231			}
232
233	dpavlin	581	sub refresh {
234			my ( $url, $time ) = @_;
235			$url \|\|= '/';
236			$time \|\|= 1;
237			warn "# refresh $url";
238			qq\|
239			<html>
240			<head>
241			<META HTTP-EQUIV="Refresh" CONTENT="$time; URL=$url"></META>
242			</head>
243			<body>
244			Refresh <a href="$url"><tt>$url</tt></a> in $time sec
245			</body>
246			</html>
247			\n\r\n\r
248			\|; # XXX newlines at end are important to flush content to browser
249			}
250
251	dpavlin	25	1;