lib/Frey/Server.pm

package Frey::Server;

use Moose;
extends 'Frey';
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;
our $port;

sub run {
        my ( $self ) = @_;

        $port = $ENV{FREY_PORT} || $self->config->{port} || 16001;

        $server = Continuity->new(
                port => $port,
                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 ) );
                        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
                        $run->{$_} = $params{$_} foreach keys %params;
                        $f = Frey::Run->new( class => $class, params => $run, run => $2, request_url => $req->request->url );
                } elsif (
                        $path =~ m{/([^/]+)/?$}
                ) {
                        my $class = rest2class $1;
                        warn "# introspect $class";
                        $run->{class} ||= $class;
                        $f = Frey::Run->new( class => 'Frey::Introspect', params => $run, request_url => $req->request->url );
                } else {
                        $f = Frey::Run->new( class => 'Frey::ClassBrowser', params => $run, request_url => $req->request->url );
                }

                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			with 'Frey::Config';
6	dpavlin	100
7	dpavlin	2	use Continuity;
8	dpavlin	36	#use Continuity::REPL;
9	dpavlin	2	use Data::Dump qw/dump/;
10
11	dpavlin	190	#use Carp::REPL; ## XXX it would be nice, but it breaks error reporting too much
12	dpavlin	101	use Frey::ClassLoader;
13	dpavlin	223	use Frey::Run;
14	dpavlin	407	use Frey::Editor;
15	dpavlin	23
16	dpavlin	2	my @messages; # Global (shared) list of messages
17			my $got_message; # Flag to indicate that there is a new message to display
18
19	dpavlin	10	use vars qw( $repl $server );
20	dpavlin	2
21	dpavlin	34	#$repl = Continuity::REPL->new;
22	dpavlin	37
23	dpavlin	182	=head1 NAME
24
25			Frey::Server - Continuity based server for Frey
26
27			=head2 DESCRIPTION
28
29			This is one of pissible server implementations for Frey. In it's current stage, it's also most complete one.
30
31			=head2 run
32
33			$o->run( $optional_port );
34
35			=cut
36
37	dpavlin	617	our $editor = Frey::Editor->new;
38	dpavlin	625	our $port;
39	dpavlin	617
40	dpavlin	25	sub run {
41	dpavlin	625	my ( $self ) = @_;
42
43			$port = $ENV{FREY_PORT} \|\| $self->config->{port} \|\| 16001;
44
45	dpavlin	64	$server = Continuity->new(
46	dpavlin	625	port => $port,
47	dpavlin	64	path_session => 1,
48			cookie_session => 'sid',
49			callback => \&main,
50	dpavlin	205	debug_level => 2,
51	dpavlin	523	staticp => sub {
52	dpavlin	526	$_[0]->url =~ m{^/+(static\|var).\.(jpg\|jpeg\|gif\|png\|css\|ico\|js\|html?\|xml\|json\|ya?ml)(\?.)?$}
53	dpavlin	523	},
54	dpavlin	64	);
55	dpavlin	205	$Module::Reload::Debug = 1; # auto if debug_level > 1
56	dpavlin	101	Frey::ClassLoader->new->load_all_classes();
57	dpavlin	617	$editor->switch_screen if $ENV{FREY_SWITCH_SCREEN};
58	dpavlin	25	$server->loop;
59			}
60	dpavlin	2
61	dpavlin	182	=head2 main
62
63			This is simple dispatcher for our server. Currently it's in flux and
64			documented only in source code.
65
66			=cut
67
68	dpavlin	2	sub main {
69	dpavlin	37	my ($req) = @_;
70	dpavlin	190
71	dpavlin	570	# $req->send_headers("X-Frey-VERSION: $Frey::VERSION");
72
73	dpavlin	37	my $path = $req->request->url->path;
74	dpavlin	2
75	dpavlin	625	# eval {
76			{
77	dpavlin	120
78	dpavlin	477	if ( $path =~ m{/reload(.*)} ) {
79	dpavlin	542
80			$ENV{FREY_NO_LOG} = 1;
81			my $cmd = "perl -c $0";
82			warn "# check config with $cmd";
83			if ( system($cmd) == 0 ) {
84	dpavlin	581	$req->print( "\r\n" );
85			my $server = Frey::Server->new;
86			$server->load_config;
87			$req->print( "\r\n" );
88	dpavlin	542	Module::Reload->check;
89	dpavlin	581	$req->print( "\r\n" );
90	dpavlin	542	$req->print( refresh( $1, 1 ) );
91	dpavlin	581	$req->print( "\r\n" );
92	dpavlin	542	warn "# reload done";
93			return;
94			} else {
95			warn "ERROR: $?";
96			}
97			$ENV{FREY_NO_LOG} = 0;
98
99	dpavlin	477	} elsif ( $path =~ m{/exit(.*)} ) {
100			# FIXME do we need some kind of check here for production? :-)
101			# ./bin/dev.sh will restart us during development
102	dpavlin	533	$req->print( refresh( $1, 2 ) );
103	dpavlin	581	$req->print( "\r\n" );
104	dpavlin	477	exit;
105	dpavlin	429	}
106	dpavlin	66
107	dpavlin	429	# warn $req->request->header('User_Agent');
108	dpavlin	292
109	dpavlin	429	my %params = $req->params;
110			my $html;
111	dpavlin	292
112	dpavlin	429	sub rest2class {
113			my $class = shift;
114			$class =~ s/-/::/; # sigh!
115			return $class;
116			}
117	dpavlin	277
118	dpavlin	429
119	dpavlin	114	my $f;
120	dpavlin	66
121	dpavlin	421	# shared run params
122			my $run = {
123			request_url => $req->request->url,
124	dpavlin	625	# debug => 1,
125	dpavlin	421	};
126
127	dpavlin	292	if (
128			$path =~ m{/Frey[:-]+ObjectBrowser}
129			) {
130	dpavlin	277	$f = Frey::ObjectBrowser->new( fey_class => $params{class} );
131			$f->request( $req );
132	dpavlin	292	} elsif (
133			$path =~ m{/Frey[:-]+ObjectDesigner}
134			) {
135	dpavlin	277	$f = Frey::ObjectDesigner->new( fey_class => $params{class} );
136			$f->request( $req );
137	dpavlin	407	} elsif ( $path =~ $editor->url_regex ) {
138			$req->print( $editor->command( $path ) );
139	dpavlin	346	return;
140			} elsif (
141	dpavlin	581	$path =~ m{/([^/]+)/(\w*as_\w+)/?([^/]+)?}
142	dpavlin	292	) {
143			my $class = rest2class $1;
144	dpavlin	421	warn "# run $path -> $class $2";
145			$run->{format} = $3 if $3;
146	dpavlin	507	$params{request_url} = $req->request->url;
147	dpavlin	571	$req->print( "\r\n\r\n" ); # send something to browser so we don't time-out
148	dpavlin	625	$run->{$_} = $params{$_} foreach keys %params;
149			$f = Frey::Run->new( class => $class, params => $run, run => $2, request_url => $req->request->url );
150	dpavlin	292	} elsif (
151			$path =~ m{/([^/]+)/?$}
152			) {
153			my $class = rest2class $1;
154			warn "# introspect $class";
155	dpavlin	625	$run->{class} \|\|= $class;
156			$f = Frey::Run->new( class => 'Frey::Introspect', params => $run, request_url => $req->request->url );
157	dpavlin	121	} else {
158	dpavlin	625	$f = Frey::Run->new( class => 'Frey::ClassBrowser', params => $run, request_url => $req->request->url );
159	dpavlin	66	}
160
161	dpavlin	277	if ( $f ) {
162	dpavlin	519	$f->clean_status;
163			$f->add_status( { request => $req } );
164	dpavlin	581	$f->status_parts;
165			if ( my $html = $f->html ) {
166			warn "## html ",length($html)," bytes";
167	dpavlin	536	$req->print( $html );
168	dpavlin	581	} else {
169	dpavlin	589	confess "no output from $f";
170	dpavlin	581	}
171	dpavlin	277	} else {
172	dpavlin	589	confess "# can't call request on nothing!";
173	dpavlin	277	}
174
175	dpavlin	66	};
176
177			if ( $@ ) {
178	dpavlin	581	warn "SERVER ERROR: $@";
179			# $req->conn->send_error( 404 ); # FIXME this should probably be 500, but we can't ship page with it
180			$req->print( qq{<pre class="frey-error">$@<pre>\r\n\r\n} );
181	dpavlin	190	# Carp::REPL::repl;
182	dpavlin	53	}
183
184	dpavlin	37	# If this is a request for the pushtream, then give them that
185			if($path =~ /pushstream/) {
186			pushstream($req);
187			}
188	dpavlin	121
189	dpavlin	37	# If they are sending us a message, we give them a thread for that too
190			if($path =~ /sendmessage/) {
191			send_message($req);
192			}
193	dpavlin	2
194	dpavlin	536	if ( $req->conn ) {
195	dpavlin	589	$req->print( "\r\n" ); # flush
196	dpavlin	520	$req->conn->close;
197			warn "## close connection: $@";
198			}
199	dpavlin	2	}
200
201			# Here we accept a connection to the browser, and keep it open. Meanwhile we
202			# watch the global $got_message variable, and when it gets touched we send off
203			# the list of messages through the held-open connection. Then we let the
204			# browser open a new connection and begin again.
205			sub pushstream {
206			my ($req) = @_;
207			# Set up watch event -- this will be triggered when $got_message is written
208			my $w = Coro::Event->var(var => \$got_message, poll => 'w');
209			while(1) {
210			print STDERR "** GOT MESSAGE, SENDING **\n";
211			my $log = join "<br>", @messages;
212			$req->print($log);
213			$req->next;
214			print STDERR "** Waiting for got_message indicator **\n";
215			$w->next;
216			}
217			}
218
219
220			# Watch for the user to send us a message. As soon as we get it, we add it to
221			# our list of messages and touch the $got_message flag to let all the
222			# pushstreams know.
223			sub send_message {
224			my ($req) = @_;
225			while(1) {
226			my $msg = $req->param('message');
227			my $name = $req->param('username');
228			if($msg) {
229			unshift @messages, "$name: $msg";
230			pop @messages if $#messages > 15; # Only keep the recent 15 messages
231			}
232			$got_message = 1;
233			$req->print("Got it!");
234			$req->next;
235			}
236			}
237
238	dpavlin	581	sub refresh {
239			my ( $url, $time ) = @_;
240			$url \|\|= '/';
241			$time \|\|= 1;
242			warn "# refresh $url";
243			qq\|
244			<html>
245			<head>
246			<META HTTP-EQUIV="Refresh" CONTENT="$time; URL=$url"></META>
247			</head>
248			<body>
249			Refresh <a href="$url"><tt>$url</tt></a> in $time sec
250			</body>
251			</html>
252			\n\r\n\r
253			\|; # XXX newlines at end are important to flush content to browser
254			}
255
256	dpavlin	25	1;