Hello,
I've been trying to get Apache Wookie working on WildFly. After raising a
few defects against WildFly's new web server component called UnderTow
(which are now fixed), I think there may be a remaining issue in Wookie:
In LocalizedResourceFilter, there is code that looks for a localized copy
of a resource. Here is an example snippet (around line 185):
String filePath = filterConfig.getServletContext().getRealPath(path);
if (new File(filePath).exists())
return context + path;
According to the javadoc for ServletContext.getRealPath(), it is allowed to
return null if the file does not exist. As my widgets are not localized,
this is the case, and a NullPointerException occurs because null is then
passed to new File(filePath).
I'm not sure why this has not been found before - perhaps other web servers
have not been returning null if a resource does not exist.
I've fixed it temporarily with a local patch that does an extra null check
before calling new File():
String filePath = filterConfig.getServletContext().getRealPath(path);
if (filePath != null && new File(filePath).exists())
return context + path;
There are 3 places in LocalizedResourceFilter that needed this fix - and
may there be more in other Wookie classes?
Should I raise a Jira ticket for this?
Thanks,
Darren.
(Full exception from WildFly log is given below)
[exec] 13:58:02,558 ERROR [io.undertow.request] (default task-2)
UT005023: Exception handling request to /wookie/wservices/
abc.com/widgets/abc-tag-cloud/index.html: java.lang.RuntimeException:
Exception caught for transaction: java.lang.NullPointerException
[exec] at
org.apache.wookie.server.MainFilter.doFilter(MainFilter.java:85) [classes:]
[exec] at
io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:56)
[undertow-servlet-1.0.0.Beta30.jar:1.0.0.Beta30]
[exec] at
io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:132)
[undertow-servlet-1.0.0.Beta30.jar:1.0.0.Beta30]
[exec] at
io.undertow.servlet.handlers.FilterHandler.handleRequest(FilterHandler.java:85)
[undertow-servlet-1.0.0.Beta30.jar:1.0.0.Beta30]
[exec] at
io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:61)
[undertow-servlet-1.0.0.Beta30.jar:1.0.0.Beta30]
[exec] at
io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36)
[undertow-servlet-1.0.0.Beta30.jar:1.0.0.Beta30]
[exec] at
org.wildfly.extension.undertow.security.SecurityContextAssociationHandler.handleRequest(SecurityContextAssociationHandler.java:70)
[exec] at
io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:25)
[undertow-core-1.0.0.Beta31-SNAPSHOT.jar:1.0.0.Beta31-SNAPSHOT]
[exec] at
io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest(SSLInformationAssociationHandler.java:113)
[undertow-servlet-1.0.0.Beta30.jar:1.0.0.Beta30]
[exec] at
io.undertow.security.handlers.AuthenticationCallHandler.handleRequest(AuthenticationCallHandler.java:52)
[undertow-core-1.0.0.Beta31-SNAPSHOT.jar:1.0.0.Beta31-SNAPSHOT]
[exec] at
io.undertow.security.handlers.AuthenticationConstraintHandler.handleRequest(AuthenticationConstraintHandler.java:51)
[undertow-core-1.0.0.Beta31-SNAPSHOT.jar:1.0.0.Beta31-SNAPSHOT]
[exec] at
io.undertow.security.handlers.AbstractConfidentialityHandler.handleRequest(AbstractConfidentialityHandler.java:45)
[undertow-core-1.0.0.Beta31-SNAPSHOT.jar:1.0.0.Beta31-SNAPSHOT]
[exec] at
io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest(ServletConfidentialityConstraintHandler.java:61)
[undertow-servlet-1.0.0.Beta30.jar:1.0.0.Beta30]
[exec] at
io.undertow.servlet.handlers.security.ServletSecurityConstraintHandler.handleRequest(ServletSecurityConstraintHandler.java:56)
[undertow-servlet-1.0.0.Beta30.jar:1.0.0.Beta30]
[exec] at
io.undertow.security.handlers.AuthenticationMechanismsHandler.handleRequest(AuthenticationMechanismsHandler.java:58)
[undertow-core-1.0.0.Beta31-SNAPSHOT.jar:1.0.0.Beta31-SNAPSHOT]
[exec] at
io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.handleRequest(CachedAuthenticatedSessionHandler.java:67)
[undertow-servlet-1.0.0.Beta30.jar:1.0.0.Beta30]
[exec] at
io.undertow.security.handlers.SecurityInitialHandler.handleRequest(SecurityInitialHandler.java:70)
[undertow-core-1.0.0.Beta31-SNAPSHOT.jar:1.0.0.Beta31-SNAPSHOT]
[exec] at
io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:25)
[undertow-core-1.0.0.Beta31-SNAPSHOT.jar:1.0.0.Beta31-SNAPSHOT]
[exec] at
org.wildfly.extension.undertow.security.jacc.JACCContextIdHandler.handleRequest(JACCContextIdHandler.java:61)
[exec] at
io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:25)
[undertow-core-1.0.0.Beta31-SNAPSHOT.jar:1.0.0.Beta31-SNAPSHOT]
[exec] at
io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:25)
[undertow-core-1.0.0.Beta31-SNAPSHOT.jar:1.0.0.Beta31-SNAPSHOT]
[exec] at
io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:240)
[undertow-servlet-1.0.0.Beta30.jar:1.0.0.Beta30]
[exec] at
io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:227)
[undertow-servlet-1.0.0.Beta30.jar:1.0.0.Beta30]
[exec] at
io.undertow.servlet.handlers.ServletInitialHandler.access$000(ServletInitialHandler.java:73)
[undertow-servlet-1.0.0.Beta30.jar:1.0.0.Beta30]
[exec] at
io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:146)
[undertow-servlet-1.0.0.Beta30.jar:1.0.0.Beta30]
[exec] at
io.undertow.server.Connectors.executeRootHandler(Connectors.java:164)
[undertow-core-1.0.0.Beta31-SNAPSHOT.jar:1.0.0.Beta31-SNAPSHOT]
[exec] at
io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:654)
[undertow-core-1.0.0.Beta31-SNAPSHOT.jar:1.0.0.Beta31-SNAPSHOT]
[exec] at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
[rt.jar:1.7.0_21]
[exec] at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
[rt.jar:1.7.0_21]
[exec] at java.lang.Thread.run(Thread.java:722) [rt.jar:1.7.0_21]
[exec] Caused by: java.lang.NullPointerException
[exec] at java.io.File.<init>(File.java:251) [rt.jar:1.7.0_21]
[exec] at
org.apache.wookie.server.LocalizedResourceFilter.getLocalizedResource(LocalizedResourceFilter.java:186)
[classes:]
[exec] at
org.apache.wookie.server.LocalizedResourceFilter.doFilter(LocalizedResourceFilter.java:92)
[classes:]
[exec] at
io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:56)
[undertow-servlet-1.0.0.Beta30.jar:1.0.0.Beta30]
[exec] at
io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:132)
[undertow-servlet-1.0.0.Beta30.jar:1.0.0.Beta30]
[exec] at
org.apache.wookie.server.MainFilter.doFilter(MainFilter.java:63) [classes:]
[exec] ... 29 more
