predicate => '_has_writer',
);
-sub DEMOLISH { $_[0]->_writer->close if $_[0]->_has_writer }
+has write_fh => (
+ is=>'ro',
+ predicate=>'has_write_fh',
+ lazy=>1,
+ builder=>'_build_write_fh',
+);
+
+sub _build_write_fh {
+ my $self = shift;
+ $self->_context->finalize_headers unless
+ $self->finalized_headers;
+ $self->_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',
);
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) = @_;
+
+ # This is a less-than-pretty hack to avoid breaking the old
+ # Catalyst::Engine::PSGI. 5.9 Catalyst::Engine sets a response_cb and
+ # expects us to pass headers to it here, whereas Catalyst::Enngine::PSGI
+ # just pulls the headers out of $ctx->response in its run method and never
+ # sets response_cb. So take the lack of a response_cb as a sign that we
+ # don't need to set the headers.
+
+ return unless $self->_has_response_cb;
+
+ # If we already have a writer, we already did this, so don't do it again
+ return if $self->_has_writer;
+
+ my @headers;
+ $self->headers->scan(sub { push @headers, @_ });
+
+ my $writer = $self->_response_cb->([ $self->status, \@headers ]);
+ $self->_set_writer($writer);
+ $self->_clear_response_cb;
+
+ return;
+}
+
=head1 NAME
Catalyst::Response - stores output responding to the current client request
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 DEMOLISH
Ensures that the response is flushed and closed at the end of the