has _response_cb => (
is => 'ro',
- isa => 'CodeRef',
+ isa => 'CodeRef',
writer => '_set_response_cb',
clearer => '_clear_response_cb',
predicate => '_has_response_cb',
has _writer => (
is => 'ro',
- isa => 'Catalyst::Engine::Types::Writer',
- writer => '_set_writer',
+ isa => 'Catalyst::Engine::Types::Writer', #Pointless since we control how this is built
+ #writer => '_set_writer', Now that its lazy I think this is safe to remove
clearer => '_clear_writer',
predicate => '_has_writer',
+ lazy => 1,
+ builder => '_build_writer',
);
-sub DEMOLISH { $_[0]->_writer->close if $_[0]->_has_writer }
+sub _build_writer {
+ my $self = shift;
+
+ ## These two lines are probably crap now...
+ $self->_context->finalize_headers unless
+ $self->finalized_headers;
+
+ my @headers;
+ $self->headers->scan(sub { push @headers, @_ });
+
+ my $writer = $self->_response_cb->([ $self->status, \@headers ]);
+ $self->_clear_response_cb;
+
+ return $writer;
+}
+
+has write_fh => (
+ is=>'ro',
+ predicate=>'_has_write_fh',
+ lazy=>1,
+ builder=>'_build_write_fh',
+);
+
+sub _build_write_fh { shift ->_writer }
+
+sub DEMOLISH {
+ my $self = shift;
+ return if $self->_has_write_fh;
+ if($self->_has_writer) {
+ $self->_writer->close
+ }
+}
has cookies => (is => 'rw', default => sub { {} });
has body => (is => 'rw', default => undef);
has _context => (
is => 'rw',
weak_ref => 1,
- handles => ['write'],
clearer => '_clear_context',
);
+before [qw(status headers content_encoding content_length content_type header)] => sub {
+ my $self = shift;
+
+ $self->_context->log->warn(
+ "Useless setting a header value after finalize_headers called." .
+ " Not what you want." )
+ if ( $self->finalized_headers && @_ );
+};
+
sub output { shift->body(@_) }
sub code { shift->status(@_) }
+sub write {
+ my ( $self, $buffer ) = @_;
+
+ # Finalize headers if someone manually writes output
+ $self->_context->finalize_headers unless $self->finalized_headers;
+
+ $buffer = q[] unless defined $buffer;
+
+ my $len = length($buffer);
+ $self->_writer->write($buffer);
+
+ return $len;
+}
+
+sub finalize_headers {
+ my ($self) = @_;
+ return;
+}
+
+sub from_psgi_response {
+ my ($self, $psgi_res) = @_;
+ if(ref $psgi_res eq 'ARRAY') {
+ my ($status, $headers, $body) = @$psgi_res;
+ $self->status($status);
+ $self->headers(HTTP::Headers->new(@$headers));
+ $self->body($body);
+ } elsif(ref $psgi_res eq 'CODE') {
+ $psgi_res->(sub {
+ my $response = shift;
+ my ($status, $headers, $maybe_body) = @$response;
+ $self->status($status);
+ $self->headers(HTTP::Headers->new(@$headers));
+ if(defined $maybe_body) {
+ $self->body($maybe_body);
+ } else {
+ return $self->write_fh;
+ }
+ });
+ } else {
+ die "You can't set a Catalyst response from that, expect a valid PSGI response";
+ }
+}
+
=head1 NAME
Catalyst::Response - stores output responding to the current client request
in the same fashion), or a filehandle GLOB. Catalyst
will write it piece by piece into the response.
+When using a L<IO::Handle> type of object and no content length has been
+already set in the response headers Catalyst will make a reasonable attempt
+to determine the size of the Handle. Depending on the implementation of your
+handle object, setting the content length may fail. If it is at all possible
+for you to determine the content length of your handle object,
+it is recommended that you set the content length in the response headers
+yourself, which will be respected and sent by Catalyst in the response.
+
=head2 $res->has_body
Predicate which returns true when a body has been set.
Writes $data to the output stream.
+=head2 $res->write_fh
+
+Returns a PSGI $writer object that has two methods, write and close. You can
+close over this object for asynchronous and nonblocking applications. For
+example (assuming you are using a supporting server, like L<Twiggy>
+
+ package AsyncExample::Controller::Root;
+
+ use Moose;
+
+ BEGIN { extends 'Catalyst::Controller' }
+
+ sub prepare_cb {
+ my $write_fh = pop;
+ return sub {
+ my $message = shift;
+ $write_fh->write("Finishing: $message\n");
+ $write_fh->close;
+ };
+ }
+
+ sub anyevent :Local :Args(0) {
+ my ($self, $c) = @_;
+ my $cb = $self->prepare_cb($c->res->write_fh);
+
+ my $watcher;
+ $watcher = AnyEvent->timer(
+ after => 5,
+ cb => sub {
+ $cb->(scalar localtime);
+ undef $watcher; # cancel circular-ref
+ });
+ }
+
=head2 $res->print( @data )
Prints @data to the output stream, separated by $,. This lets you pass
the response object to functions that want to write to an L<IO::Handle>.
+=head2 $self->finalize_headers($c)
+
+Writes headers to response if not already written
+
+=head2 from_psgi_response
+
+Given a PSGI response (either three element ARRAY reference OR coderef expecting
+a $responder) set the response from it.
+
+Properly supports streaming and delayed response and / or async IO if running
+under an expected event loop.
+
+Example:
+
+ package MyApp::Web::Controller::Test;
+
+ use base 'Catalyst::Controller';
+ use Plack::App::Directory;
+
+
+ my $app = Plack::App::Directory->new({ root => "/path/to/htdocs" })
+ ->to_app;
+
+ sub myaction :Local Args {
+ my ($self, $c) = @_;
+ $c->res->from_psgi_response($app->($c->req->env));
+ }
+
+Please note this does not attempt to map or nest your PSGI application under
+the Controller and Action namespace or path.
+
=head2 DEMOLISH
Ensures that the response is flushed and closed at the end of the
projects / catagits/Catalyst-Runtime.git / blobdiff