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#!/usr/bin/perl |
package Frey::Server; |
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# "HTTP Push" is not readily attainable, so instead we will simulate it using a |
use Moose; |
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# long-pull, aka "Comet". The client browser simply opens an HTTP connection to |
extends 'Frey'; |
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# the server and waits for a response. The server doesn't respond until there |
with 'Frey::Web'; |
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# is some event (here a new message), giving the appearance of HTTP-push. |
with 'Frey::Config'; |
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# |
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# Each user gets three continuations for these three cases: |
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# |
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# - Initial load or reload of the page |
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# - Sending a message (uses AJAX on the client) |
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# - Recieving messages (uses COMET on the client) |
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use strict; |
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use lib 'lib'; |
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use Continuity; |
use Continuity; |
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use Continuity::REPL; |
#use Continuity::REPL; |
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use Data::Dump qw/dump/; |
use Data::Dump qw/dump/; |
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use View; |
#use Carp::REPL; ## XXX it would be nice, but it breaks error reporting too much |
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use Frey::ClassLoader; |
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use Template::Declare; |
use Frey::Run; |
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use Template::Declare::Tags; # defaults to 'HTML' |
use Frey::Editor; |
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Template::Declare->init( roots => ['View']); |
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warn "templates = ",dump( Template::Declare->templates ); |
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my @messages; # Global (shared) list of messages |
my @messages; # Global (shared) list of messages |
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my $got_message; # Flag to indicate that there is a new message to display |
my $got_message; # Flag to indicate that there is a new message to display |
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use vars qw( $repl $server @messages ); |
use vars qw( $repl $server ); |
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$repl = Continuity::REPL->new; |
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#$repl = Continuity::REPL->new; |
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=head1 NAME |
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Frey::Server - Continuity based server for Frey |
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=head2 DESCRIPTION |
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This is one of pissible server implementations for Frey. In it's current stage, it's also most complete one. |
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=head2 run |
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$o->run( $optional_port ); |
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=cut |
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sub run { |
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my ( $self, $port ) = @_; |
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$server = Continuity->new( |
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port => $port || $self->config->{port} || 16001, |
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path_session => 1, |
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cookie_session => 'sid', |
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callback => \&main, |
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debug_level => 2, |
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staticp => sub { $_[0]->url =~ m/^(static|var).*\.(jpg|jpeg|gif|png|css|ico|js|html?|xml|json|ya?ml)(\?.*)?$/ }, |
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); |
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$Module::Reload::Debug = 1; # auto if debug_level > 1 |
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Frey::ClassLoader->new->load_all_classes(); |
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$server->loop; |
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} |
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=head2 main |
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This is simple dispatcher for our server. Currently it's in flux and |
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documented only in source code. |
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=cut |
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$server = Continuity->new( |
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port => 16001, |
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path_session => 1, |
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cookie_session => 'sid', |
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); |
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$server->debug_level( 2 ); |
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$server->loop; |
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# This is the main entrypoint. We are looking for one of three things -- a |
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# pushstream, a sent message, or a request for the main HTML. We delegate each |
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# of these cases, none of which will return (they all loop forever). |
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sub main { |
sub main { |
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my ($req) = @_; |
my ($req) = @_; |
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my $path = $req->request->url->path; |
my $path = $req->request->url->path; |
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print STDERR "Path: '$path'\n"; |
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eval { |
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warn $req->request->header('User_Agent'); |
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#warn dump( $req ); |
sub refresh { |
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my $url = shift || '/'; |
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# If this is a request for the pushtream, then give them that |
warn "# refresh $url"; |
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if($path =~ /pushstream/) { |
qq| |
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pushstream($req); |
<html> |
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} |
<head> |
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<META HTTP-EQUIV="Refresh" CONTENT="1; URL=$url"></META> |
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# If they are sending us a message, we give them a thread for that too |
</head> |
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if($path =~ /sendmessage/) { |
<body> |
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send_message($req); |
Refresh <a href="$url"><tt>$url</tt></a> |
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} |
</body> |
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</html> |
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\n\r\n\r |
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|; # XXX newlines at end are important to flush content to browser |
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} |
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if ( $path =~ m{/reload(.*)} ) { |
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Frey::Server->new->load_config; |
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Module::Reload->check; |
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warn "# reload done"; |
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$req->print( refresh( $1 ) ); |
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return; |
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} elsif ( $path =~ m{/exit(.*)} ) { |
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# FIXME do we need some kind of check here for production? :-) |
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# ./bin/dev.sh will restart us during development |
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$req->print( refresh( $1 ) ); |
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exit; |
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} |
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# warn $req->request->header('User_Agent'); |
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my %params = $req->params; |
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my $html; |
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sub rest2class { |
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my $class = shift; |
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$class =~ s/-/::/; # sigh! |
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return $class; |
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} |
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my $f; |
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my $editor = Frey::Editor->new; |
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# shared run params |
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my $run = { |
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request_url => $req->request->url, |
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debug => 1, |
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}; |
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if ( |
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$path =~ m{/Frey[:-]+ObjectBrowser} |
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) { |
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$f = Frey::ObjectBrowser->new( fey_class => $params{class} ); |
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$f->request( $req ); |
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} elsif ( |
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$path =~ m{/Frey[:-]+ObjectDesigner} |
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) { |
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$f = Frey::ObjectDesigner->new( fey_class => $params{class} ); |
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$f->request( $req ); |
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} elsif ( $path =~ $editor->url_regex ) { |
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$req->print( $editor->command( $path ) ); |
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system( $editor->command( $path ) ); |
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return; |
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} elsif ( |
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$path =~ m{/([^/]+)/(as_\w+)/?([^/]+)?} |
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) { |
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my $class = rest2class $1; |
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warn "# run $path -> $class $2"; |
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$run->{format} = $3 if $3; |
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$params{request_url} = $req->request->url; |
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$f = Frey::Run->new( class => $class, params => \%params, run => $2, %$run ); |
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} elsif ( |
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$path =~ m{/([^/]+)/?$} |
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) { |
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my $class = rest2class $1; |
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warn "# introspect $class"; |
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$f = Frey::Run->new( class => 'Frey::Introspect', params => { class => $class }, %$run ); |
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} else { |
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$f = Frey::Run->new( class => 'Frey::ClassBrowser', %$run ); |
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} |
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if ( $f ) { |
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$f->add_status( { req => $req } ); |
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warn "## status ", dump( map { keys %$_ } @{ $f->status } ); |
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$req->print( $f->html ); |
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} else { |
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warn "# can't call request on nothing!"; |
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} |
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}; |
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if ( $@ ) { |
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warn $@; |
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$req->conn->send_error( 404 ); # FIXME this should probably be 500, but we can't ship page with it |
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$req->print( qq{<pre class="frey-error">$@<pre>} ); |
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# Carp::REPL::repl; |
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} |
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# If this is a request for the pushtream, then give them that |
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if($path =~ /pushstream/) { |
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pushstream($req); |
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} |
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# If they are sending us a message, we give them a thread for that too |
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if($path =~ /sendmessage/) { |
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send_message($req); |
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} |
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# Otherwise, lets give them the base page |
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send_base_page($req); |
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} |
} |
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# Here we accept a connection to the browser, and keep it open. Meanwhile we |
# Here we accept a connection to the browser, and keep it open. Meanwhile we |
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} |
} |
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} |
} |
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# This isn't a pushstream, nor a new message. It is just the main page. We loop |
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# in case they ask for it multiple times :) |
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sub send_base_page { |
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my ($req) = @_; |
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while(1) { |
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warn "base page"; |
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$req->print( Template::Declare->show( 'user' ) ); |
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=for later |
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$req->print(qq{ |
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<html> |
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<head> |
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<title>Chat!</title> |
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<script src="jquery.js" type="text/javascript"></script> |
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<script src="chat-ajax-push.js" type="text/javascript"></script> |
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</head> |
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<body> |
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<form id=f> |
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<input type=text id=username name=usernamename size=10> |
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<input type=text id=message name=message size=50> |
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<input type=submit name="sendbutton" value="Send" id="sendbutton"> |
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<span id=status></span> |
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</form> |
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<br> |
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<div id=log>-- no messages yet --</div> |
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</body> |
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</html> |
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}); |
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=cut |
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$req->next; |
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} |
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} |
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