| 1 |
#!/usr/bin/perl |
package Frey::Server; |
| 2 |
|
|
| 3 |
# "HTTP Push" is not readily attainable, so instead we will simulate it using a |
use Moose; |
| 4 |
# long-pull, aka "Comet". The client browser simply opens an HTTP connection to |
extends 'Frey::Editor'; |
| 5 |
# the server and waits for a response. The server doesn't respond until there |
with 'Frey::Config'; |
|
# is some event (here a new message), giving the appearance of HTTP-push. |
|
|
# |
|
|
# Each user gets three continuations for these three cases: |
|
|
# |
|
|
# - Initial load or reload of the page |
|
|
# - Sending a message (uses AJAX on the client) |
|
|
# - Recieving messages (uses COMET on the client) |
|
| 6 |
|
|
|
use strict; |
|
|
use lib 'lib'; |
|
|
use Continuity; |
|
|
use Continuity::REPL; |
|
| 7 |
use Data::Dump qw/dump/; |
use Data::Dump qw/dump/; |
| 8 |
|
|
| 9 |
use View; |
#use Carp::REPL; # 'nodie'; |
| 10 |
|
|
| 11 |
|
use lib 'lib'; |
| 12 |
|
use Frey::Run; |
| 13 |
|
|
| 14 |
|
has 'port' => ( |
| 15 |
|
documentation => 'port on which server listen', |
| 16 |
|
is => 'ro', |
| 17 |
|
isa => 'Int', |
| 18 |
|
default => sub { |
| 19 |
|
my $self = shift; |
| 20 |
|
$ENV{FREY_PORT} || $self->config->{port} || 16001 |
| 21 |
|
}, |
| 22 |
|
); |
| 23 |
|
|
| 24 |
use Template::Declare; |
has 'editor' => ( |
| 25 |
use Template::Declare::Tags; # defaults to 'HTML' |
is => 'ro', |
| 26 |
Template::Declare->init( roots => ['View']); |
isa => 'Frey::Editor', |
| 27 |
warn "templates = ",dump( Template::Declare->templates ); |
lazy => 1, |
| 28 |
|
default => sub { |
| 29 |
my @messages; # Global (shared) list of messages |
Frey::Editor->new; |
| 30 |
my $got_message; # Flag to indicate that there is a new message to display |
}, |
|
|
|
|
use vars qw( $repl $server @messages ); |
|
|
$repl = Continuity::REPL->new; |
|
|
|
|
|
$server = Continuity->new( |
|
|
port => 16001, |
|
|
path_session => 1, |
|
|
cookie_session => 'sid', |
|
| 31 |
); |
); |
|
$server->debug_level( 2 ); |
|
| 32 |
|
|
| 33 |
$server->loop; |
=head2 request |
| 34 |
|
|
| 35 |
# This is the main entrypoint. We are looking for one of three things -- a |
This is simple dispatcher for our server. Currently it's in flux and |
| 36 |
# pushstream, a sent message, or a request for the main HTML. We delegate each |
documented only in source code. |
|
# of these cases, none of which will return (they all loop forever). |
|
|
sub main { |
|
|
my ($req) = @_; |
|
|
|
|
|
my $path = $req->request->url->path; |
|
|
print STDERR "Path: '$path'\n"; |
|
|
|
|
|
warn $req->request->header('User_Agent'); |
|
|
#warn dump( $req ); |
|
|
|
|
|
# If this is a request for the pushtream, then give them that |
|
|
if($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); |
|
|
} |
|
| 37 |
|
|
| 38 |
# Otherwise, lets give them the base page |
my $content_type = $self->request( $url, $params ); |
|
send_base_page($req); |
|
|
} |
|
| 39 |
|
|
| 40 |
# Here we accept a connection to the browser, and keep it open. Meanwhile we |
=cut |
| 41 |
# watch the global $got_message variable, and when it gets touched we send off |
|
| 42 |
# the list of messages through the held-open connection. Then we let the |
sub print { |
| 43 |
# browser open a new connection and begin again. |
my $self = shift; |
| 44 |
sub pushstream { |
warn "# print ", join(' ', map { length $_ } @_ ); |
| 45 |
my ($req) = @_; |
$self->{_print}->( @_ ); |
|
# 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; |
|
|
} |
|
| 46 |
} |
} |
| 47 |
|
|
| 48 |
|
sub request { |
| 49 |
|
my ( $self, $url, $params ) = @_; |
| 50 |
|
|
| 51 |
|
if ( my $ref = ref($url) ) { |
| 52 |
|
die "url not URI but ", dump( $url ) unless $ref =~ m{^URI}; |
| 53 |
|
} else { |
| 54 |
|
$url = URI->new($url); |
| 55 |
|
} |
| 56 |
|
|
| 57 |
|
my $path = $url->path; |
| 58 |
|
|
| 59 |
|
if ( $path =~ m{^/(favicon.ico|__history__.html)$} ) { |
| 60 |
|
warn "INFO: $path ignored"; |
| 61 |
|
return { code => 404, content_type => 'text/plain' }; |
| 62 |
|
} |
| 63 |
|
|
| 64 |
|
my $request = { |
| 65 |
|
content_type => 'text/html', |
| 66 |
|
code => 200, |
| 67 |
|
}; |
| 68 |
|
|
| 69 |
|
eval { |
| 70 |
|
|
| 71 |
|
if ( $path =~ m{/reload(.*)} ) { |
| 72 |
|
|
| 73 |
|
$ENV{FREY_NO_LOG} = 1; |
| 74 |
|
my $cmd = "perl -c $0"; |
| 75 |
|
warn "# check syntax with $cmd"; |
| 76 |
|
if ( system($cmd) == 0 ) { |
| 77 |
|
my $server = Frey::Server->new; |
| 78 |
|
$self->load_config; |
| 79 |
|
# Module::Reload->check; |
| 80 |
|
warn "# reload done"; |
| 81 |
|
$self->print( refresh( $1, 0 ) ); |
| 82 |
|
return; |
| 83 |
|
} else { |
| 84 |
|
warn "ERROR: $?"; |
| 85 |
|
} |
| 86 |
|
$ENV{FREY_NO_LOG} = 0; |
| 87 |
|
|
| 88 |
|
} elsif ( $path =~ m{/exit(.*)} ) { |
| 89 |
|
# FIXME do we need some kind of check here for production? :-) |
| 90 |
|
# ./bin/dev.sh will restart us during development |
| 91 |
|
$self->print( refresh( $1, 2 ) ); |
| 92 |
|
exit; |
| 93 |
|
} |
| 94 |
|
|
| 95 |
|
my $html; |
| 96 |
|
|
| 97 |
|
sub rest2class { |
| 98 |
|
my $class = shift; |
| 99 |
|
$class =~ s/-/::/; # sigh! |
| 100 |
|
return $class; |
| 101 |
|
} |
| 102 |
|
|
| 103 |
|
my $f; |
| 104 |
|
|
| 105 |
|
# shared run params |
| 106 |
|
my $run = { |
| 107 |
|
request_url => $url, |
| 108 |
|
# debug => 1, |
| 109 |
|
}; |
| 110 |
|
|
| 111 |
|
if ( |
| 112 |
|
$path =~ m{/Frey[:-]+ObjectBrowser} |
| 113 |
|
) { |
| 114 |
|
$f = Frey::ObjectBrowser->new( fey_class => $params->{class} ); |
| 115 |
|
# $f->request( $req ); |
| 116 |
|
} elsif ( |
| 117 |
|
$path =~ m{/Frey[:-]+ObjectDesigner} |
| 118 |
|
) { |
| 119 |
|
$f = Frey::ObjectDesigner->new( fey_class => $params->{class} ); |
| 120 |
|
# $f->request( $req ); |
| 121 |
|
} elsif ( $path =~ $self->editor->url_regex ) { |
| 122 |
|
$self->print( $self->editor->command( $path ) ); |
| 123 |
|
return; |
| 124 |
|
} elsif ( |
| 125 |
|
$path =~ m{/([^/]+)/(\w+)/?([^/]+)?} |
| 126 |
|
) { |
| 127 |
|
my $class = rest2class $1; |
| 128 |
|
warn "# run $path -> $class $2"; |
| 129 |
|
$run->{format} = $3 if $3; |
| 130 |
|
foreach my $p ( keys %$params ) { |
| 131 |
|
$run->{$p} = $params->{$p} if defined $params->{$p} && $params->{$p} ne ''; |
| 132 |
|
} |
| 133 |
|
$f = Frey::Run->new( class => $class, params => $run, run => $2 ); |
| 134 |
|
} elsif ( |
| 135 |
|
$path =~ m{/([^/]+)/?$} |
| 136 |
|
) { |
| 137 |
|
my $class = rest2class $1; |
| 138 |
|
warn "# introspect $class"; |
| 139 |
|
$run->{class} ||= $class; |
| 140 |
|
$f = Frey::Run->new( class => 'Frey::Introspect', params => $run ); |
| 141 |
|
} else { |
| 142 |
|
$f = Frey::Run->new( class => 'Frey::Class::Browser', params => $run ); |
| 143 |
|
} |
| 144 |
|
|
| 145 |
|
if ( $f ) { |
| 146 |
|
$f->setup_request; |
| 147 |
|
# $f->add_status( { request => $req } ); |
| 148 |
|
$f->status_parts; |
| 149 |
|
if ( my $html = $f->html ) { |
| 150 |
|
warn "## html ",length($html)," bytes"; |
| 151 |
|
$self->print( $html ); |
| 152 |
|
} else { |
| 153 |
|
confess "no output from $f"; |
| 154 |
|
} |
| 155 |
|
} else { |
| 156 |
|
confess "# can't call request on nothing!"; |
| 157 |
|
} |
| 158 |
|
|
| 159 |
|
$request->{content_type} = $f->content_type; |
| 160 |
|
}; |
| 161 |
|
|
| 162 |
|
if ( $@ ) { |
| 163 |
|
warn "SERVER ERROR: $@"; |
| 164 |
|
$self->print( qq|<pre class="frey-error">$@<pre>| ); |
| 165 |
|
# Carp::REPL::repl; |
| 166 |
|
return { |
| 167 |
|
content_type => 'text/html', |
| 168 |
|
code => 404, |
| 169 |
|
} |
| 170 |
|
} |
| 171 |
|
|
| 172 |
# Watch for the user to send us a message. As soon as we get it, we add it to |
return $request; |
|
# 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; |
|
|
} |
|
| 173 |
} |
} |
| 174 |
|
|
| 175 |
# This isn't a pushstream, nor a new message. It is just the main page. We loop |
sub refresh { |
| 176 |
# in case they ask for it multiple times :) |
my ( $url, $time ) = @_; |
| 177 |
sub send_base_page { |
$url ||= '/'; |
| 178 |
my ($req) = @_; |
$time ||= 0; |
| 179 |
while(1) { |
warn "# refresh $url"; |
| 180 |
warn "base page"; |
qq| |
| 181 |
$req->print( Template::Declare->show( 'user' ) ); |
<html> |
| 182 |
=for later |
<head> |
| 183 |
$req->print(qq{ |
<META HTTP-EQUIV="Refresh" CONTENT="$time; URL=$url"></META> |
| 184 |
<html> |
</head> |
| 185 |
<head> |
<body> |
| 186 |
<title>Chat!</title> |
Refresh <a href="$url"><tt>$url</tt></a> in $time sec |
| 187 |
<script src="jquery.js" type="text/javascript"></script> |
</body> |
| 188 |
<script src="chat-ajax-push.js" type="text/javascript"></script> |
</html> |
| 189 |
</head> |
\n\r\n\r |
| 190 |
<body> |
|; # XXX newlines at end are important to flush content to browser |
|
<form id=f> |
|
|
<input type=text id=username name=usernamename size=10> |
|
|
<input type=text id=message name=message size=50> |
|
|
<input type=submit name="sendbutton" value="Send" id="sendbutton"> |
|
|
<span id=status></span> |
|
|
</form> |
|
|
<br> |
|
|
<div id=log>-- no messages yet --</div> |
|
|
</body> |
|
|
</html> |
|
|
}); |
|
|
=cut |
|
|
$req->next; |
|
|
} |
|
| 191 |
} |
} |
| 192 |
|
|
| 193 |
|
__PACKAGE__->meta->make_immutable; |
| 194 |
|
no Moose; |
| 195 |
|
|
| 196 |
|
my $timestamp_interval = 3; |
| 197 |
|
my $output_tell = 0; |
| 198 |
|
|
| 199 |
|
$SIG{ALRM} = sub { |
| 200 |
|
if ( tell(STDERR) != $output_tell ) { |
| 201 |
|
warn "\nTIMESTAMP: " . localtime() . "\n\n"; |
| 202 |
|
$output_tell = tell(STDERR); |
| 203 |
|
} |
| 204 |
|
alarm $timestamp_interval; |
| 205 |
|
}; |
| 206 |
|
alarm $timestamp_interval; |
| 207 |
|
|
| 208 |
|
1; |
Parent Directory
| 
Revision Log
| 
Patch