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From "David Primmer" <david.prim...@gmail.com>
Subject Re: need help with the custom provider example
Date Tue, 15 Apr 2008 22:43:18 GMT
To re-use the the framework in our server environment, we just need an
interface to be able to pull config for a component and an entry point
to start it all off. Doesn't matter what the format or mechanism is.

davep

On Tue, Apr 15, 2008 at 3:29 PM, David Calavera
<david.calavera@gmail.com> wrote:
> I agree, I think currently there are better solutions than properties files.
>  The Spring 2.5 annotation configure stuff could be a good example.
>
>  On Tue, Apr 15, 2008 at 11:44 PM, Dan Diephouse <
>
>
> dan.diephouse@mulesource.com> wrote:
>
>  > I agree with your conclusions - I think the current version is a little
>  > simplistic. I haven't looked into it much, but I know its on one of my two
>  > top priority issues for 1.0. Properties files are rarely the way people want
>  > to configure stuff.
>  >
>  >
>  > David Primmer wrote:
>  >
>  > > Thanks Dan. It turns out we were being brain-dead and we should've
>  > > just used AbderaServlet directly and send in a couple init params like
>  > > you have in your web.xml.
>  > >
>  > > The main question i have now is how to use all the new Managed
>  > > classes. This is one area where info on how to wire them up will help
>  > > newbies like me. Some example properties files especially. I couldn't
>  > > find any in the src. Also, custom routing is the main issue with the
>  > > ManagedProvider. I'm using a custom provider just for the routing (and
>  > > since I don't have time to figure out how to write the properties
>  > > files for the ManagedProvider). Since routing is usually the first
>  > > place you'd move away from the boilerplate, I'd say it would help to
>  > > have clear points to factor out the routing info into a class that can
>  > > be loaded as a property for the managed provider. ManagedRouteManager
>  > > may also work.
>  > >
>  > > davep
>  > >
>  > > On Tue, Apr 15, 2008 at 4:46 AM, Dan Diephouse
>  > > <dan.diephouse@mulesource.com> wrote:
>  > >
>  > >
>  > > > We need to make sure this is documented and fix the tutorial. One
>  > > > shouldn't
>  > > > have to extend the servlet to get Abdera working. I guess its a
>  > > > question of
>  > > > what is best practice... Is it best practice to extend
>  > > > DefaultProvider, add
>  > > > your adapters and then supply the init-param for your provider? The
>  > > > problem
>  > > > I have with this approach is that it seems a little overly simplistic
>  > > > as you
>  > > > still need to get access to your backend somehow (the pre-built
>  > > > adapters are
>  > > > another story).
>  > > >
>  > > >  Dan
>  > > >
>  > > >
>  > > >
>  > > >  David Primmer wrote:
>  > > >
>  > > >
>  > > >
>  > > > > vasu and i figured it out.
>  > > > >
>  > > > > I put the init params into the web.xml:
>  > > > >
>  > > > >   <init-param>
>  > > > >
>  > > > > <param-name>org.apache.abdera.protocol.server.Provider</param-name>
>  > > > >
>  > > > > <param-value>org.apache.abdera.example.CustomProvider</param-value>
>  > > > >   </init-param>
>  > > > >
>  > > > > then i get them from the config and have the manager create the
>  > > > > providor:
>  > > > >
>  > > > >  @Override
>  > > > >  protected Provider createProvider() {
>  > > > >   return manager.newProvider(getProperties(getServletConfig()));
>  > > > >  }
>  > > > >
>  > > > > if you leave the init params out, you create a DefaultProvider
>  > > > > instead
>  > > > > of your CustomProvider
>  > > > >
>  > > > > davep
>  > > > >
>  > > > > On Fri, Apr 11, 2008 at 2:04 PM, David Primmer <
>  > > > > david.primmer@gmail.com>
>  > > > >
>  > > > >
>  > > > wrote:
>  > > >
>  > > >
>  > > > >
>  > > > >
>  > > > > > I'm doing server setup that I thought should be better documented.
>  > > > > >  Basically, I'd like to make the CustomProvider example work
with
>  > > > > > a
>  > > > > >  web.xml based setup. I see some info on it on the wiki but
the
>  > > > > > example
>  > > > > >  itself uses java code to compose the app and to start jetty.
>  > > > > >
>  > > > > >  So I made a CustomSampleServlet that extends AbderaServlet
and
>  > > > > > re-uses
>  > > > > >  the other two files from the custom example.
>  > > > > >
>  > > > > >  This is what it does:
>  > > > > >
>  > > > > >  public class CustomSampleServlet extends AbderaServlet {
>  > > > > >
>  > > > > >  private final static Log log =
>  > > > > > LogFactory.getLog(AbderaServlet.class);
>  > > > > >
>  > > > > >  @Override
>  > > > > >  protected Provider createProvider() {
>  > > > > >   return new CustomProvider();
>  > > > > >  }
>  > > > > >
>  > > > > >  @Override
>  > > > > >  public void init() {
>  > > > > >   log.debug("Initialing Abdera Servlet");
>  > > > > >   manager = createServiceManager();
>  > > > > >   provider = createProvider();
>  > > > > >   log.debug("Using provider - " + provider);
>  > > > > >  }
>  > > > > >
>  > > > > >  }
>  > > > > >
>  > > > > >
>  > > > > >  Then in my web.xml I have what is at the bottom of this page:
>  > > > > >
>  > > > > >
>  > > > > >
>  > > > >
>  > > > http://cwiki.apache.org/confluence/display/ABDERA/Your+first+AtomPub+Server
>  > > >
>  > > >
>  > > > >  line 179 of ServletRequestContext does:
>  > > > > >  Abdera abdera = provider.getAbdera();
>  > > > > >
>  > > > > >  but returns null. This doesn't seem right. Next thing i know,
i
>  > > > > > have a
>  > > > > >  null pointer exception on ServletRequestContext.getHost. Can
>  > > > > > someone
>  > > > > >  help with the provider bootstrap code?
>  > > > > >
>  > > > > >  Does this have something to do with leaving out this sort
of
>  > > > > > thing?:
>  > > > > >  servletHolder.setInitParameter(ServiceManager.PROVIDER,
>  > > > > >  CustomProvider.class.getName());
>  > > > > >
>  > > > > >  thanks.
>  > > > > >
>  > > > > >  davep
>  > > > > >
>  > > > > >
>  > > > > >
>  > > > > >
>  > > > > >
>  > > > >  --
>  > > >  Dan Diephouse
>  > > >  MuleSource
>  > > >  http://mulesource.com | http://netzooid.com
>  > > >
>  > > >
>  > > >
>  > >
>  >
>  > --
>  > Dan Diephouse
>  > MuleSource
>  > http://mulesource.com | http://netzooid.com
>  >
>
>
>
>  --
>  David Calavera
>  http://www.thinkincode.net
>

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