/[Frey]/trunk/lib/Frey/Server.pm
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Contents of /trunk/lib/Frey/Server.pm

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Revision 571 - (show annotations)
Thu Nov 27 22:29:01 2008 UTC (15 years, 5 months ago) by dpavlin
File size: 5895 byte(s)
since we can't really send out real headers under Continuity,
we just send couple of CR/LFs
1 package Frey::Server;
2
3 use Moose;
4 extends 'Frey';
5 with 'Frey::Web';
6 with 'Frey::Config';
7
8 use Continuity;
9 #use Continuity::REPL;
10 use Data::Dump qw/dump/;
11
12 #use Carp::REPL; ## XXX it would be nice, but it breaks error reporting too much
13 use Frey::ClassLoader;
14 use Frey::Run;
15 use Frey::Editor;
16
17 my @messages; # Global (shared) list of messages
18 my $got_message; # Flag to indicate that there is a new message to display
19
20 use vars qw( $repl $server );
21
22 #$repl = Continuity::REPL->new;
23
24 =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 sub run {
39 my ( $self, $port ) = @_;
40 $server = Continuity->new(
41 port => $port || $self->config->{port} || 16001,
42 path_session => 1,
43 cookie_session => 'sid',
44 callback => \&main,
45 debug_level => 2,
46 staticp => sub {
47 $_[0]->url =~ m{^/+(static|var).*\.(jpg|jpeg|gif|png|css|ico|js|html?|xml|json|ya?ml)(\?.*)?$}
48 },
49 );
50 $Module::Reload::Debug = 1; # auto if debug_level > 1
51 Frey::ClassLoader->new->load_all_classes();
52 $server->loop;
53 }
54
55 =head2 main
56
57 This is simple dispatcher for our server. Currently it's in flux and
58 documented only in source code.
59
60 =cut
61
62 sub main {
63 my ($req) = @_;
64
65 # $req->send_headers("X-Frey-VERSION: $Frey::VERSION");
66
67 my $path = $req->request->url->path;
68
69 eval {
70
71 sub refresh {
72 my ( $url, $time ) = @_;
73 $url ||= '/';
74 $time ||= 1;
75 warn "# refresh $url";
76 qq|
77 <html>
78 <head>
79 <META HTTP-EQUIV="Refresh" CONTENT="$time; URL=$url"></META>
80 </head>
81 <body>
82 Refresh <a href="$url"><tt>$url</tt></a> in $time sec
83 </body>
84 </html>
85 \n\r\n\r
86 |; # XXX newlines at end are important to flush content to browser
87 }
88
89 if ( $path =~ m{/reload(.*)} ) {
90
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 } 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 $req->print( refresh( $1, 2 ) );
109 exit;
110 }
111
112 # warn $req->request->header('User_Agent');
113
114 my %params = $req->params;
115 my $html;
116
117 sub rest2class {
118 my $class = shift;
119 $class =~ s/-/::/; # sigh!
120 return $class;
121 }
122
123
124 my $f;
125
126 my $editor = Frey::Editor->new;
127
128 # shared run params
129 my $run = {
130 request_url => $req->request->url,
131 debug => 1,
132 };
133
134 if (
135 $path =~ m{/Frey[:-]+ObjectBrowser}
136 ) {
137 $f = Frey::ObjectBrowser->new( fey_class => $params{class} );
138 $f->request( $req );
139 } elsif (
140 $path =~ m{/Frey[:-]+ObjectDesigner}
141 ) {
142 $f = Frey::ObjectDesigner->new( fey_class => $params{class} );
143 $f->request( $req );
144 } elsif ( $path =~ $editor->url_regex ) {
145 $req->print( $editor->command( $path ) );
146 system( $editor->command( $path ) );
147 return;
148 } elsif (
149 $path =~ m{/([^/]+)/(as_\w+)/?([^/]+)?}
150 ) {
151 my $class = rest2class $1;
152 warn "# run $path -> $class $2";
153 $run->{format} = $3 if $3;
154 $params{request_url} = $req->request->url;
155 $req->print( "\r\n\r\n" ); # send something to browser so we don't time-out
156 $f = Frey::Run->new( class => $class, params => \%params, run => $2, %$run );
157 } elsif (
158 $path =~ m{/([^/]+)/?$}
159 ) {
160 my $class = rest2class $1;
161 warn "# introspect $class";
162 $f = Frey::Run->new( class => 'Frey::Introspect', params => { class => $class }, %$run );
163 } else {
164 $f = Frey::Run->new( class => 'Frey::ClassBrowser', %$run );
165 }
166
167 if ( $f ) {
168 $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 eval {
175 $req->print( $html );
176 };
177 die "can't send to wire: $@" if $@;
178 } else {
179 warn "# can't call request on nothing!";
180 }
181
182 };
183
184 if ( $@ ) {
185 warn $@;
186 $req->conn->send_error( 404 ); # FIXME this should probably be 500, but we can't ship page with it
187 $req->print( qq{<pre class="frey-error">$@<pre>} );
188 # Carp::REPL::repl;
189 }
190
191 # If this is a request for the pushtream, then give them that
192 if($path =~ /pushstream/) {
193 pushstream($req);
194 }
195
196 # 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
201 if ( $req->conn ) {
202 $req->conn->close;
203 warn "## close connection: $@";
204 }
205 }
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 1;

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