Chetan Mehrotra created SLING-2704:
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Summary: NPE in JspScriptEngineFactory in case JSP bundle restart
while servicing request
Key: SLING-2704
URL: https://issues.apache.org/jira/browse/SLING-2704
Project: Sling
Issue Type: Bug
Components: Scripting
Affects Versions: Scripting JSP 2.0.26
Reporter: Chetan Mehrotra
Priority: Minor
If a jsp perform some operation (some admin function) which results in restart
of various bundle then its possible that org.apache.sling.scripting.jsp bundle
also gets restarted. Due to which following NPE is seen in logs. This happens
because the 'jspFactoryHandler' in JspScriptEngineFactory becomes null by the
time service call returns (due to component deactivation)
A simple fix might be to create a local copy of jspFactoryHandler and use that
(Thanks to Felix for suggesting this!!). Would attach a patch also with the fix
Uncaught SlingException java.lang.NullPointerException
at
org.apache.sling.scripting.jsp.JspScriptEngineFactory.callJsp(JspScriptEngineFactory.java:243)
at
org.apache.sling.scripting.jsp.JspScriptEngineFactory.access$100(JspScriptEngineFactory.java:86)
at
org.apache.sling.scripting.jsp.JspScriptEngineFactory$JspScriptEngine.eval(JspScriptEngineFactory.java:441)
at
org.apache.sling.scripting.core.impl.DefaultSlingScript.call(DefaultSlingScript.java:361)
at
org.apache.sling.scripting.core.impl.DefaultSlingScript.eval(DefaultSlingScript.java:171)
at
org.apache.sling.scripting.core.impl.DefaultSlingScript.service(DefaultSlingScript.java:463)
at
org.apache.sling.engine.impl.request.RequestData.service(RequestData.java:508)
at
org.apache.sling.engine.impl.filter.SlingComponentFilterChain.render(SlingComponentFilterChain.java:45)
at
org.apache.sling.engine.impl.filter.AbstractSlingFilterChain.doFilter(AbstractSlingFilterChain.java:64)
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