On 22/03/2024 15:43, Rick Noel wrote:
Mark,
So if my customer object is failing to get set in the session replication,
I could add this to the config snippet?
sessionAttributeNameFilter="customer"
You set that to the attributes you DO want to replicate, not the ones
you don't.
Mark
so like this?...........
<Cluster className="org.apache.catalina.ha.tcp.SimpleTcpCluster"
channelSendOptions="6">
<Manager
className="org.apache.catalina.ha.session.DeltaManager"
expireSessionsOnShutdown="false"
notifyListenersOnReplication="true"
maxActiveSessions="8192"
sessionAttributeNameFilter="customer"
/>
<Channel
className="org.apache.catalina.tribes.group.GroupChannel">
<Membership
className="org.apache.catalina.tribes.membership.McastService"
address="228.0.0.4"
port="45564"
frequency="500"
dropTime="3000"/>
<Receiver
className="org.apache.catalina.tribes.transport.nio.NioReceiver"
address="auto"
port="5000"
selectorTimeout="100"
maxThreads="6"/>
<Sender
className="org.apache.catalina.tribes.transport.ReplicationTransmitter">
<Transport
className="org.apache.catalina.tribes.transport.nio.PooledParallelSender"/>
</Sender>
<Interceptor
className="org.apache.catalina.tribes.group.interceptors.TcpFailureDetector"/>
<Interceptor
className="org.apache.catalina.tribes.group.interceptors.MessageDispatchInterceptor"/>
<Interceptor
className="org.apache.catalina.tribes.group.interceptors.ThroughputInterceptor"/>
</Channel>
<Valve
className="org.apache.catalina.ha.tcp.ReplicationValve"
filter=".*\.gif|.*\.js|.*\.jpeg|.*\.jpg|.*\.png|.*\.htm|.*\.html|.*\.css|.*\.txt"/>
<ClusterListener
className="org.apache.catalina.ha.session.ClusterSessionListener"/>
</Cluster>
Rick Noel
Systems Programmer | Westwood One
[email protected]
-----Original Message-----
From: Mark Thomas <[email protected]>
Sent: Friday, March 22, 2024 11:32 AM
To: [email protected]
Subject: [EXT]Re: Tomcat session replication issue -
java.lang.IllegalArgumentException: setAttribute: Non-serializable attribute :
On 22/03/2024 15:15, Rick Noel wrote:
Is there a way to configure DeltaManager or the Cluster element so it does not
cause my application to throw this error.....
22-Mar-2024 10:56:34.382 SEVERE [http-nio-8586-exec-5]
org.apache.catalina.core.StandardWrapperValve.invoke Servlet.service() for
servlet [jsp] in context with path [##0001] threw exception [An exception
occurred processing [/services/include/properties.jsp] at line [196]
193:
194: session.setAttribute( "format", stationFormat );
195: session.setAttribute( "employee_id", employeeId );
196: session.setAttribute( "customer", customer );
197: session.setAttribute( "customer_id", customerId );
198: session.setAttribute( "nonidentifier_call_letters",
nonIdentifierCallLetters );
199: session.setAttribute( "call_letters", callLetters );
Stacktrace:] with root cause
java.lang.IllegalArgumentException: setAttribute:
Non-serializable attribute [customer]
I know why the error, it is because the customer object was never written to
be serialiazable.
The old application I am working on has a lot of such non serialized objects
and I do not want to search out change them all to implement serialiazable
I am hoping there is a way to configure Tomcat to just not try and replication
sessions all object which are not serialiazable
https://tomcat.apache.org/tomcat-10.1-doc/config/manager.html
Search for sessionAttributeNameFilter
Mark
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