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package Frey::Server; |
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use strict; |
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use warnings; |
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use Continuity; |
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#use Continuity::REPL; |
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use Data::Dump qw/dump/; |
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use base 'Frey'; |
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use Frey::HTML; |
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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 |
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use vars qw( $repl $server ); |
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#$repl = Continuity::REPL->new; |
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$server = Continuity->new( |
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port => 16001, |
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path_session => 1, |
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cookie_session => 'sid', |
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callback => \&main, |
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); |
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$server->debug_level( 2 ); |
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sub run { |
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$server->loop; |
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} |
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my @callbacks; |
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my $callback_count; |
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sub gen_link { |
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my ($text, $code) = @_; |
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$callbacks[$callback_count] = $code; |
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my $out = qq{<a href="?cb=$callback_count">$text</a>}; |
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$callback_count++; |
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return $out; |
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} |
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sub process_links { |
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my $request = shift; |
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my $cb = $request->param('cb'); |
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if (exists $callbacks[$cb]) { |
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$callbacks[$cb]->($request); |
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# delete $callbacks[$cb]; |
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} |
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} |
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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 { |
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my ($req) = @_; |
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my $path = $req->request->url->path; |
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warn "REQUEST: $path\n"; |
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warn $req->request->header('User_Agent'); |
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#warn dump( $req ); |
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# If this is a request for the pushtream, then give them that |
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if($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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if ( $path =~ m/test/ ) { |
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use Data::Dumper; |
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$Data::Dumper::Deparse = 1; |
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my $x = 0; |
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my $continue = 1; |
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my $link1 = gen_link('+' => sub { $x++ }); |
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my $link2 = gen_link('-' => sub { $x-- }); |
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my $out = gen_link('X' => sub { $continue = 0 }); |
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while ( $continue ) { |
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warn "## x = $x ",dump( $req->params ); |
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$req->print("\$x is now: $x"); |
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$req->print($link1, ' ', $link2, ' ', $out); |
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$req->print('<pre>'.Dumper( @callbacks ).'</pre>'); |
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$req->next; |
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process_links($req); |
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} |
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} |
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# Otherwise, lets give them page |
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send_page($req); |
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} |
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# Here we accept a connection to the browser, and keep it open. Meanwhile we |
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# watch the global $got_message variable, and when it gets touched we send off |
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# the list of messages through the held-open connection. Then we let the |
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# browser open a new connection and begin again. |
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sub pushstream { |
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my ($req) = @_; |
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# Set up watch event -- this will be triggered when $got_message is written |
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my $w = Coro::Event->var(var => \$got_message, poll => 'w'); |
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while(1) { |
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print STDERR "**** GOT MESSAGE, SENDING ****\n"; |
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my $log = join "<br>", @messages; |
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$req->print($log); |
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$req->next; |
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print STDERR "**** Waiting for got_message indicator ****\n"; |
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$w->next; |
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} |
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} |
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# Watch for the user to send us a message. As soon as we get it, we add it to |
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# our list of messages and touch the $got_message flag to let all the |
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# pushstreams know. |
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sub send_message { |
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my ($req) = @_; |
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while(1) { |
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my $msg = $req->param('message'); |
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my $name = $req->param('username'); |
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if($msg) { |
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unshift @messages, "$name: $msg"; |
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pop @messages if $#messages > 15; # Only keep the recent 15 messages |
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} |
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$got_message = 1; |
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$req->print("Got it!"); |
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$req->next; |
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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_page { |
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my ($req) = @_; |
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my $templates = Template::Declare->templates; |
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while(1) { |
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warn "param = ",dump($req->param); |
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my $path = $req->request->url->path; |
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my $html; |
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if ( $path =~ m/::/ ) { |
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my ( undef, $module, $method ) = split(m!/!, $path, 3); |
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if ( ! defined( $templates->{$module} ) ) { |
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$req->conn->send_status_line( 404, "$module" ); |
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$html = "Package $module not found"; |
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} elsif ( ! $method ) { |
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$html = Frey::HTML->page( 'package-methods', $req, $module ); |
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} elsif ( grep(/^\Q$method\E$/, @{ $templates->{$module} }) ) { |
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$html = Frey::HTML->page( $method, $req ); |
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} else { |
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$req->conn->send_status_line( 404, "$module $method" ); |
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$html = "Package $module doesn't have $method"; |
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} |
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} else { |
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warn "fallback to status page\n"; |
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$html = Frey::HTML->page( 'status' ); |
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} |
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$req->print( $html ); |
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warn ">> ",length( $html ), " bytes\n"; |
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$req->next; |
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} |
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} |
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1; |