Dispatcher flush not working when done from custom code.

[TarunKumar]

Hi,

I am experiencing one issue wherein if I trigger a dispatcher flush from my custom preprocessor code on page replication, I get error null for path message. This seems to be happening after SP upgrade to 17 but not sure this may be the only reason. This was a long existing logic and was working earlier.
In code we are invoking flush by using DispatcherFlusher provided by ACS-commons.
Note:- We have checked the permission setup and don't find any issue with that.

Error message:

Log trace:

POST /bin/replicate HTTP/1.1] com.day.cq.replication.impl.servlets.CommandServlet Error during replication: null
java.lang.StackOverflowError: null
	at java.base/java.security.AccessController.doPrivileged(Native Method)
	at java.base/javax.security.auth.Subject.getSubject(Subject.java:296)
	at org.apache.jackrabbit.oak.security.authentication.LoginContextProviderImpl.getSubject(LoginContextProviderImpl.java:97) [org.apache.jackrabbit.oak-core:1.22.15]
	at org.apache.jackrabbit.oak.security.authentication.LoginContextProviderImpl.getLoginContext(LoginContextProviderImpl.java:79) [org.apache.jackrabbit.oak-core:1.22.15]
	at org.apache.jackrabbit.oak.core.ContentRepositoryImpl.login(ContentRepositoryImpl.java:162) [org.apache.jackrabbit.oak-core:1.22.15]
	at org.apache.jackrabbit.oak.spi.security.authentication.AbstractLoginModule$1.run(AbstractLoginModule.java:478) [org.apache.jackrabbit.oak-security-spi:1.22.15]
	at org.apache.jackrabbit.oak.spi.security.authentication.AbstractLoginModule$1.run(AbstractLoginModule.java:475) [org.apache.jackrabbit.oak-security-spi:1.22.15]
	at java.base/java.security.AccessController.doPrivileged(Native Method)
	at java.base/javax.security.auth.Subject.doAs(Subject.java:423)
	at org.apache.jackrabbit.oak.spi.security.authentication.AbstractLoginModule.getRoot(AbstractLoginModule.java:475) [org.apache.jackrabbit.oak-security-spi:1.22.15]
	at org.apache.jackrabbit.oak.security.authentication.token.TokenLoginModule.getTokenProvider(TokenLoginModule.java:232) [org.apache.jackrabbit.oak-core:1.22.15]
	at org.apache.jackrabbit.oak.security.authentication.token.TokenLoginModule.login(TokenLoginModule.java:133) [org.apache.jackrabbit.oak-core:1.22.15]
	at org.apache.felix.jaas.boot.ProxyLoginModule.login(ProxyLoginModule.java:52) [org.apache.felix.jaas:1.0.2]
	at java.base/javax.security.auth.login.LoginContext.invoke(LoginContext.java:726)
	at java.base/javax.security.auth.login.LoginContext$4.run(LoginContext.java:665)
	at java.base/javax.security.auth.login.LoginContext$4.run(LoginContext.java:663)
	at java.base/java.security.AccessController.doPrivileged(Native Method)
	at java.base/javax.security.auth.login.LoginContext.invokePriv(LoginContext.java:663)

public final void preProcess(final ResourceResolver resourceResolver,final ReplicationAction replicationAction,final ReplicationActionType replicationActionType, Map<Pattern, String> hierarchicalFlushRules) {
                 // all the variables are initialized and this is just sample logic
               
                dispatcherFlusher.flush(resourceResolver, flushActionType, false, HIERARCHICAL_FILTER, flushPath);
                
    } 
}

[Shashi_Mulugu]

@TarunKumar whats the ACS version you are using? Have you tried upgrading it? I believe I saw some issue with SP16 where some incompatible code with ACS flush thing.. Have to either upgrade ACS version or go with SP18.. so try either if not already..

[TarunKumar]

Hi @Shashi_Mulugu ,

ACS version that we are using is "4.11.2" and SP17. Would that be a problem or incompatible?. Let me know so that I can try upgrading them?

Thanks
Tarun