Hi Vidura, Can we use ContainerRequestContext and ContainerResponseContext to pass data among filters? And can we use them to access such data at service level as well?
Thanks, Bhathiya On Thu, Jan 5, 2017 at 3:19 PM, Vidura Nanayakkara <[email protected]> wrote: > Hi, > > As per the discussions in the "[Dev] [C5] MSF4J Interceptors need to be > configurable" email thread, we have started working on the MSF4J filters. > > Mentioned below is a brief explanation of how things will look like > according to what we have planned so far. > > *Ability to filter request / response messages * > > We will be adapting JAX-RS defined interfaces (ContainerRequestFilter, > ContainerResponseFilter) for request and response filtering. For handling > the request and the response we are hoping to use JAX-RS defined interfaces > (ContainerRequestContext and ContainerResponseContext) > > *Ability to apply/skip filters in global and pre-service levels* > > Filters could be applied globally, resource or sub-resource vice which > implies that when a sub-resource is executed filters applied to the > sub-resource, resource and filters applied globally should execute > according to the relevant priority (Union set of filters). > > However, we are not adopting the Annotation driven NameBinding concept > defined for JAX-RS Filters but would be adopting a similar concept to > reduce the developer effort in writing annotations to the filters. Using > this approach we would still be using annotations to define filters in > resource and sub-resource levels. > > Ex:- Applying filters in the resource and sub-resource levels can be done > by using the below-mentioned annotations > > > @FilterRequest(filterclass=MyClass.class, priority=1000) > @FilterRequest(filterclass=MyClass2.class, priority=2000) > @FilterRequest(filterclass=MyClass3.class) > // Some method or class > > @FilterResponse(filterclass=MyClass4.class, priority=1000) > @FilterResponse(filterclass=MyClass5.class, priority=2000) > @FilterResponse(filterclass=MyClass6.class) > // Some method or class > > > By default, filters will be applied globally. > > *The order of the filters* > > Priorities for the JAXRSInInterceptors are in ascending order while > priorities for the JAXRSOutInterceptors are in descending order. This > will feature in proper execution when both ContainerRequestFilter and > ContainerResponseFilter > interfaces are implemented. > > Filters which do not have a priority specified will have a default > priority [1]. > > *How to register filters globally, to a resource or a sub-resource* > > - Using annotations as mentioned above > - In fat jar mode, filters can be registered using > addFilter(<filtername>, <priority>) method > - In OSGI mode, filters can be registered in the same way interceptors > are registered now > > [1] https://dennis-xlc.gitbooks.io/restful-java-with-jax-rs-2- > 0-2rd-edition/content/en/part1/chapter12/ordering_filters_and_interceptors.html > > > Best Regards, > > *Vidura Nanayakkara* > Software Engineer > > Email : [email protected] > Mobile : +94 (0) 717 919277 <071%20791%209277> > Web : http://wso2.com > Blog : https://medium.com/@viduran <http://wso2.com/> > Twitter : http://twitter.com/viduranana > LinkedIn : https://lk.linkedin.com/in/vidura-nanayakkara > <http://wso2.com/> > > _______________________________________________ > Architecture mailing list > [email protected] > https://mail.wso2.org/cgi-bin/mailman/listinfo/architecture > > -- *Bhathiya Jayasekara* *Senior Software Engineer,* *WSO2 inc., http://wso2.com <http://wso2.com>* *Phone: +94715478185* *LinkedIn: http://www.linkedin.com/in/bhathiyaj <http://www.linkedin.com/in/bhathiyaj>* *Twitter: https://twitter.com/bhathiyax <https://twitter.com/bhathiyax>* *Blog: http://movingaheadblog.blogspot.com <http://movingaheadblog.blogspot.com/>*
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