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package Plack::Handler::Apache2;
use strict;
use warnings;
use Apache2::RequestRec;
use Apache2::RequestIO;
use Apache2::RequestUtil;
use Apache2::Response;
use Apache2::Const -compile => qw(OK);
use APR::Table;
use IO::Handle;
use Plack::Util;
use Scalar::Util;
my %apps; # psgi file to $app mapping
sub preload {
my $class = shift;
for my $app (@_) {
$class->load_app($app);
}
}
sub load_app {
my($class, $app) = @_;
return $apps{$app} ||= do {
local $ENV{MOD_PERL}; # trick Catalyst/CGI.pm etc.
Plack::Util::load_psgi $app;
};
}
sub call_app {
my ($class, $r, $app) = @_;
$r->subprocess_env; # let Apache create %ENV for us :)
my $env = {
%ENV,
'psgi.version' => [ 1, 1 ],
'psgi.url_scheme' => ($ENV{HTTPS}||'off') =~ /^(?:on|1)$/i ? 'https' : 'http',
'psgi.input' => $r,
'psgi.errors' => *STDERR,
'psgi.multithread' => Plack::Util::FALSE,
'psgi.multiprocess' => Plack::Util::TRUE,
'psgi.run_once' => Plack::Util::FALSE,
'psgi.streaming' => Plack::Util::TRUE,
'psgi.nonblocking' => Plack::Util::FALSE,
};
$class->_recalc_paths($r, $env);
my $res = $app->($env);
if (ref $res eq 'ARRAY') {
_handle_response($r, $res);
}
elsif (ref $res eq 'CODE') {
$res->(sub {
_handle_response($r, $_[0]);
});
}
else {
die "Bad response $res";
}
return Apache2::Const::OK;
}
sub handler {
my $class = __PACKAGE__;
my $r = shift;
my $psgi = $r->dir_config('psgi_app');
$class->call_app($r, $class->load_app($psgi));
}
# The method for PH::Apache2::Regitsry to override.
sub _recalc_paths {
my ($class, $r, $env) = @_;
my $vpath = $env->{SCRIPT_NAME} . $env->{PATH_INFO};
my $location = $r->location || "/";
$location =~ s{/$}{};
(my $path_info = $vpath) =~ s/^\Q$location\E//;
$env->{SCRIPT_NAME} = $location;
$env->{PATH_INFO} = $path_info;
}
sub _handle_response {
my ($r, $res) = @_;
my ($status, $headers, $body) = @{ $res };
my $hdrs = ($status >= 200 && $status < 300)
? $r->headers_out : $r->err_headers_out;
Plack::Util::header_iter($headers, sub {
my($h, $v) = @_;
if (lc $h eq 'content-type') {
$r->content_type($v);
} elsif (lc $h eq 'content-length') {
$r->set_content_length($v);
} else {
$hdrs->add($h => $v);
}
});
$r->status($status);
if (Scalar::Util::blessed($body) and $body->can('path') and my $path = $body->path) {
$r->sendfile($path);
} elsif (defined $body) {
Plack::Util::foreach($body, sub { $r->print(@_) });
$r->rflush;
}
else {
return Plack::Util::inline_object
write => sub { $r->print(@_); $r->rflush },
close => sub { $r->rflush };
}
return Apache2::Const::OK;
}
1;
__END__
=head1 NAME
Plack::Handler::Apache2 - Apache 2.0 handlers to run PSGI application
=head1 SYNOPSIS
<Location />
SetHandler perl-script
PerlResponseHandler Plack::Handler::Apache2
PerlSetVar psgi_app /path/to/app.psgi
</Location>
# Optional, preload the application in the parent like startup.pl
<Perl>
use Plack::Handler::Apache2;
Plack::Handler::Apache2->preload("/path/to/app.psgi");
</Perl>
=head1 DESCRIPTION
This is a handler module to run any PSGI application with mod_perl on Apache 2.x.
=head1 CREATING CUSTOM HANDLER
If you want to create a custom handler that loads or creates PSGI
applications using other means than loading from C<.psgi> files, you
can create your own handler class and use C<call_app> class method to
run your application.
package My::ModPerl::Handler;
use Plack::Handler::Apache2;
sub get_app {
# magic!
}
sub handler {
my $r = shift;
my $app = get_app();
Plack::Handler::Apache2->call_app($r, $app);
}
=head1 AUTHOR
Tatsuhiko Miyagawa
=head1 CONTRIBUTORS
Paul Driver
=head1 SEE ALSO
L<Plack>
=cut
|
