[Catalyst] Web Services Integration with Catalyst

Bill Moseley moseley at hank.org
Mon Oct 15 01:27:58 GMT 2007

On Sun, Oct 14, 2007 at 08:38:52PM +0100, Matt S Trout wrote:
> Catalyst::Plugin::Server is what was going to be the community-designed new
> Plugin::XMLRPC until the namespace owner decided he didn't like the API,
> revoked the PAUSE bits for the ::Server authors and released his own
> one-day-hack rewrite with no reference to any of the design work done. So
> we picked a new namespace and went ahead with ::Server anyway.

Not sure I followed all of that.  I was confused about which namespace
you were referring to, but I see you responded about that in another

I have a more general Catalyst question about Catalyst::Plugin::Server's

Catalyst::Plugin::Server::XMLRPC uses prepare_action to both parse
the XML *and* to call prepare_action to find the action for the

Shouldn't the parsing happen earlier in the request (prepare_body)?

Why do I ask?

I'm toying with using a ticket based authentication where the token
would be sent in the XMLRPC request body, but use the existing
(cookie-based) session setup that that application uses.

One way to do this might be to return that token in get_session_id():

    sub get_session_id {
        my $c = shift;

        return $c->stash->{xmlrpc_token} || $c->NEXT::get_session_id;

Of course, the parsing of the body would need to happen before the
session is accessed.  But, C::P::Session also has a prepare_action
that might access the session id  So, it's possible that
get_session_id might get called before parsing of the XMLRPC body.
I guess careful ordering of the plugins could resolve that, but would
you agree that the parsing should happen earlier than prepare_action?

BTW -- when looking over the module I noticed that it adds a number of
"attributes" into all the actions.

I'm not that familiar with the internals here, but I was curious why
"XMLRPCRegexp" would be added to "Catalyst::DispatchType::Path".

Is that expected?

bless( {

    'namespace' => 'user',
    'name' => 'list',
    'class' => 'MyApp::Controller::User',
    'attributes' => {
                      'XMLRPCRegexp' => undef,
                      'XMLRPCLocalRegexp' => undef,
                      'Path' => [
                      'XMLRPCLocalRegex' => undef,
                      'XMLRPCRegex' => undef
    'code' => sub { "DUMMY" },
    'reverse' => 'user/list'
  }, 'Catalyst::Action' )

Bill Moseley
moseley at hank.org

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