[CONNECTORS-1456] Jobs API throw NPE when creating JSON

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: ManifoldCF 2.8
• Fix Version/s: ManifoldCF 2.9
• Component/s: API

Environment

Windows 10, Tomcat 8.5, Posgresql 9.6

• Assignee: Karl Wright
• Reporter: Adrian Conlon
• Created: 12/Sep/17 10:53
• Updated: 12/Sep/17 18:44
• Resolved: 12/Sep/17 18:44

Description

Using the "jobs" JSON API throws a java.lang.NullPointerException.

Sample URL giving failure: http://localhost:8080/mcf-api-service/json/jobs
Sample stack trace:

12-Sep-2017 10:55:54.501 SEVERE [http-nio-8080-exec-7] org.apache.catalina.core.StandardWrapperValve.invoke Servlet.service() for servlet [APIServlet] in context with path [/mcf-api-service] threw exception
java.lang.NullPointerException
            at org.apache.manifoldcf.core.interfaces.Configuration$JSONWriter.value(Configuration.java:797)
            at org.apache.manifoldcf.core.interfaces.Configuration.writeNode(Configuration.java:317)
            at org.apache.manifoldcf.core.interfaces.Configuration.writeNode(Configuration.java:406)
            at org.apache.manifoldcf.core.interfaces.Configuration.writeNode(Configuration.java:413)
            at org.apache.manifoldcf.core.interfaces.Configuration.writeNode(Configuration.java:413)
            at org.apache.manifoldcf.core.interfaces.Configuration.toJSON(Configuration.java:246)
            at org.apache.manifoldcf.apiservlet.APIServlet.executeRead(APIServlet.java:303)
            at org.apache.manifoldcf.apiservlet.APIServlet.doGet(APIServlet.java:97)
            at javax.servlet.http.HttpServlet.service(HttpServlet.java:635)
            at javax.servlet.http.HttpServlet.service(HttpServlet.java:742)
            at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
            at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
            at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
            at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
            at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
            at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:198)
            at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
            at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:478)
            at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)
            at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80)
            at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:650)
            at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
            at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342)
            at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:799)
            at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
            at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868)
            at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1457)
            at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
            at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
            at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
            at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
            at java.lang.Thread.run(Unknown Source)