Custom Tomcat valves to help debug a few special cases in Tomcat applications.
This valve will check all session attributes on each request and log a warning
if one of the attribute is not serializable. We check that the object's class
implements java.io.Serializable and that it can be written to an
ObjectOutputStream.
To use it, add the following line in your server.xml, as part of an Engine, Host or Context:
<valve classname="ch.ledcom.tomcat.valves.SessionSerializableCheckerValve">
This valve will print the size of each session.
To use it, add the following line in your server.xml, as part of an Engine, Host or Context :
<valve classname="ch.ledcom.tomcat.valves.SessionSizeValve">
This valve will print the amount of memory allocated by each HTTP request.
The following system properties can be used to further configure it :
ch.ledcom.tomcat.valves.allocation.RequestAllocationRecorderValve.disabled- Disable the valve
ch.ledcom.tomcat.valves.allocation.RequestAllocationRecorderValve.printSummary- Will also print a summary of the allocation for all requests
ch.ledcom.tomcat.valves.allocation.RequestAllocationRecorderValve.printSummary.period- Print the summary for one in
periodrequests
Can be used with Spring AOP to record allocation in part of your code. See code for details.
