Servlet Filters registered, activated but not processing request

[Nhut Thai Le]

Hello,

I have 4 servlet filters for one ServletContextHelper, having the same filter pattern and they are from the same bundle and have different ranking. When starting server, i see these filters have been registered:

{javax.servlet.Filter}={service.id=992, service.bundleid=405, service.scope=prototype, service.ranking=11, osgi.http.whiteboard.context.select=(osgi.http.whiteboard.context.name=WebviewerServletContextHelper), filter.init.excludedUrls=/zkcomet,/logout/select,/logout, osgi.http.whiteboard.filter.pattern=/*, component.name=com.castortech.iris.ba.web.filters.BaSessionFilter, osgi.http.whiteboard.filter.asyncSupported=true, component.id=1186}

  "Registered by bundle:" com.castortech.iris.ba.web.filters_1.0.0.qualifier [405]

  "Bundles using service"

    org.ops4j.pax.web.pax-web-extender-whiteboard_7.2.4 [8]

{javax.servlet.Filter}={service.id=1352, service.bundleid=405, service.scope=prototype, service.ranking=3, osgi.http.whiteboard.context.select=(osgi.http.whiteboard.context.name=WebviewerServletContextHelper), filter.init.excludedUrls=/zkcomet, osgi.http.whiteboard.filter.pattern=/*, component.name=com.castortech.iris.ba.web.filters.TenantFilter, osgi.http.whiteboard.filter.asyncSupported=true, component.id=1185}

  "Registered by bundle:" com.castortech.iris.ba.web.filters_1.0.0.qualifier [405]

  "Bundles using service"

    org.ops4j.pax.web.pax-web-extender-whiteboard_7.2.4 [8]

{javax.servlet.Filter}={service.id=652, service.bundleid=405, service.scope=prototype, service.ranking=2, osgi.http.whiteboard.context.select=(osgi.http.whiteboard.context.name=WebviewerServletContextHelper), filter.init.excludedUrls=/zkcomet, osgi.http.whiteboard.filter.pattern=/*, component.name=com.castortech.iris.ba.web.filters.KeycloakSessionFilter, osgi.http.whiteboard.filter.asyncSupported=true, component.id=1161}

  "Registered by bundle:" com.castortech.iris.ba.web.filters_1.0.0.qualifier [405]

  "Bundles using service"

    org.ops4j.pax.web.pax-web-extender-whiteboard_7.2.4 [8]

{javax.servlet.Filter}={service.id=653, service.bundleid=405, service.scope=prototype, service.ranking=1, osgi.http.whiteboard.context.select=(osgi.http.whiteboard.context.name=WebviewerServletContextHelper), component.name=com.castortech.iris.ba.web.filters.AuthenticationFilterForWebViewer, component.id=1164, keycloak.config.resolver=com.castortech.iris.ba.web.filters.BundleBasedKeycloakConfigResolver, filter.init.excludedUrls=/zkcomet, osgi.http.whiteboard.filter.pattern=/*, osgi.http.whiteboard.filter.asyncSupported=true}

  "Registered by bundle:" com.castortech.iris.ba.web.filters_1.0.0.qualifier [405]

  "Bundles using service"

    org.ops4j.pax.web.pax-web-extender-whiteboard_7.2.4 [8]

Normally the request is processed by all 4 filters in ascending order, but this morning, after i restart the server I see when a request come in, it arrives at the TenantFilte (ranking=3) skipping filters ranking 1 and 2. 

Anyone has an idea why would this happen?

[Grzegorz Grzybek]

Hello

org.ops4j.pax.web.service.internal.HttpServiceStarted#registerFilter() method should correctly take service ranking into account.

With Jetty, filters are registered (sorted by rank) inside org.ops4j.pax.web.service.jetty.internal.JettyServerImpl#addFilter(), you could enable "org.ops4j.pax.web.service.jetty.internal" DEBUG level to check what has happened.

Heap dump would be interesting too to check if all filters were registered.

Do you have Karaf output (if using Karaf at all) for list of services with objectClass=javax.servlet.Filter?

regards

Grzegorz Grzybek

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[Jean-Baptiste Onofré]

Hi

As said, I did a fix on pax web 7.2.10 about twice service registration. It might help.

Regards

JB

Le sam. 14 sept. 2019 à 19:41, Nhut Thai Le <nt...@castortech.com> a écrit :

We recently upgrade to pax-web 7.2.10 and i haven't seen this happen again yet. Even with 7.2.4 it only happened a few times, I'll post the heap dump and instance of Filter. However, in my question, i showed that all of my 4 filters have been registered and they have componentId, doesnt it mean they are instantiated?

Thai

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