Kaleo/workflow classloader has not access to scripting engine

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 7.0.0 DXP FP10, Master
• Fix Version/s: 7.0.0 DXP FP11, 7.0.0 DXP SP2, 7.0.3 CE GA4, 7.1.X, Master
• Component/s: Workflow, Workflow > API, Workflow > API > Kaleo Engine
• Labels:
  • fw_test_needed
  • liferay-digital-enterprise-70-sp2
  • liferay-fixpack-de-11-7010
• Branch Version/s:
  7.0.x
• Backported to Branch:
  Committed
• Story Points: 1
• Fix Priority: 3
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/46566

Steps to reproduce

[As test user]

1. Add the example of workflow, which has references to classes such as com.liferay.calendar.service.CalendarBookingLocalServiceUtil, attached to the ticket. (kaleo_workflow_example.xml)
   Control Panel -> Configuration -> WorkFlow Definition -> Upload Definition -> [ select from previous file] -> Save
2. Goto to site "Liferay DXP" -> Configuration -> Workflow Configuration
   Edit "Message Boards Message" and select previous workflow added.
3. Add "Message Board" app in a page.
4. Add new user A who could post new threads

[As A user]

1. Post new thread

Expected result:

1. New thread is under revision of admin user (test)
2. All the references to and uses of classes such as com.liferay.calendar.service.CalendarBookingLocalServiceUtil are correctly resolved.

Observed result:

1. The message "Your request completed successfully" is showed to user but the posted thread is not been added to the system.
2. A exception is thrown in server log:

21:39:08,585 ERROR [http-nio-8080-exec-1][IncludeTag:128] Current URL /web/guest/aesa/-/message_boards/message/31357 generates exception: java.lang.NullPointerException 
java.lang.NullPointerException 
	at org.apache.jsp.message_005fboards.view_005fthread_005ftree_jsp._jspService(view_005fthread_005ftree_jsp:401) 
	at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:111) 
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729) 
	at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:411) 
	at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:473) 
	at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:377) 
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729) 
	at com.liferay.portal.osgi.web.servlet.jsp.compiler.JspServlet.service(JspServlet.java:403) 
	at com.liferay.portal.osgi.web.servlet.jsp.compiler.JspServlet.service(JspServlet.java:414) 
	at org.eclipse.equinox.http.servlet.internal.registration.EndpointRegistration.service(EndpointRegistration.java:153) 
	at org.eclipse.equinox.http.servlet.internal.servlet.ResponseStateHandler.processRequest(ResponseStateHandler.java:62) 
	at org.eclipse.equinox.http.servlet.internal.context.DispatchTargets.doDispatch(DispatchTargets.java:117) 
	at org.eclipse.equinox.http.servlet.internal.servlet.RequestDispatcherAdaptor.include(RequestDispatcherAdaptor.java:48) 
	at com.liferay.portal.servlet.DirectServletPathRegisterDispatcher.include(DirectServletPathRegisterDispatcher.java:67) 
	at com.liferay.portal.servlet.ClassLoaderRequestDispatcherWrapper.doDispatch(ClassLoaderRequestDispatcherWrapper.java:78) 
	at com.liferay.portal.servlet.ClassLoaderRequestDispatcherWrapper.include(ClassLoaderRequestDispatcherWrapper.java:53) 
	at com.liferay.taglib.util.IncludeTag.includePage(IncludeTag.java:380) 
	at com.liferay.taglib.util.IncludeTag.include(IncludeTag.java:362) 
	at com.liferay.taglib.util.IncludeTag.doInclude(IncludeTag.java:206) 
	at com.liferay.taglib.util.IncludeTag.doEndTag(IncludeTag.java:88) 
21:39:08,588 ERROR [http-nio-8080-exec-1][IncludeTag:128] Current URL /web/guest/aesa/-/message_boards/message/31357 generates exception: java.lang.NullPointerException 
java.lang.NullPointerException 
	at com.liferay.portlet.messageboards.model.impl.MBTreeWalkerImpl.getChildrenRange(MBTreeWalkerImpl.java:101) 
	at org.apache.jsp.message_005fboards.view_005fmessage_005fcontent_jsp._jspService(view_005fmessage_005fcontent_jsp:1629) 
	at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:111) 
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729) 
	at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:411) 
	at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:473) 
	at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:377) 
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729) 
	at com.liferay.portal.osgi.web.servlet.jsp.compiler.JspServlet.service(JspServlet.java:403) 
	at com.liferay.portal.osgi.web.servlet.jsp.compiler.JspServlet.service(JspServlet.java:414) 
	at org.eclipse.equinox.http.servlet.internal.registration.EndpointRegistration.service(EndpointRegistration.java:153) 
	at org.eclipse.equinox.http.servlet.internal.servlet.ResponseStateHandler.processRequest(ResponseStateHandler.java:62) 
	at org.eclipse.equinox.http.servlet.internal.context.DispatchTargets.doDispatch(DispatchTargets.java:117) 
	at org.eclipse.equinox.http.servlet.internal.servlet.RequestDispatcherAdaptor.include(RequestDispatcherAdaptor.java:48) 
	at com.liferay.portal.servlet.DirectServletPathRegisterDispatcher.include(DirectServletPathRegisterDispatcher.java:67) 
	at com.liferay.portal.servlet.ClassLoaderRequestDispatcherWrapper.doDispatch(ClassLoaderRequestDispatcherWrapper.java:78) 
	at com.liferay.portal.servlet.ClassLoaderRequestDispatcherWrapper.include(ClassLoaderRequestDispatcherWrapper.java:53) 
	at com.liferay.taglib.util.IncludeTag.includePage(IncludeTag.java:380) 
	at com.liferay.taglib.util.IncludeTag.include(IncludeTag.java:362) 
	at com.liferay.taglib.util.IncludeTag.doInclude(IncludeTag.java:206) 
21:39:08,663 ERROR [liferay/kaleo_graph_walker-2][ParallelDestination:55] Unable to process message {destinationName=liferay/kaleo_graph_walker, response=null, responseDestinationName=null, responseId=null, payl[email protected]45c5b562, values={defaultLocale=en_US, companyId=20116, groupId=0, principalName=30637, [email protected]288a7fb9, siteDefaultLocale=en_US, themeDisplayLocale=en_US}} 
com.liferay.portal.kernel.messaging.MessageListenerException: com.liferay.portal.kernel.scripting.ScriptingException: startup failed:_Script1.groovy: 3: unable to resolve class com.liferay.calendar.service.CalendarBookingLocalServiceUtil_ @ line 3, column 8._   							import com.liferay.calendar.service.CalendarBookingLocalServiceUtil;_          ^__1 error__Line 1: _Line 2: 					_Line 3: 						import com.liferay.calendar.service.CalendarBookingLocalServiceUtil;_Line 4: 							import com.liferay.portal.kernel.model.Group;_Line 5: 							import com.liferay.portal.kernel.model.Role;_Line 6: 							import com.liferay.portal.kernel.service.GroupLocalServiceUtil;_Line 7: 							import com.liferay.portal.kernel.service.RoleLocalServiceUtil;_Line 8: 							import com.liferay.portal.kernel.util.GetterUtil;_Line 9: 						import com.liferay.portal.kernel.workflow.WorkflowConstants;_Line 10: _Line 11: 							long companyId = GetterUtil.getLong((String)workflowContext.get(WorkflowConstants.CONTEXT_COMPANY_ID));_Line 12: _Line 13: 							long groupId = GetterUtil.getLong((String)workflowContext.get(WorkflowConstants.CONTEXT_GROUP_ID));_Line 14: _Line 15: 							Group group = GroupLocalServiceUtil.getGroup(groupId);_Line 16: _Line 17: 							roles = new ArrayList<Role>();_Line 18: _Line 19: 				Role adminRole = RoleLocalServiceUtil.getRole(companyId, "Administrator");_Line 20: _Line 21: 							roles.add(adminRole);_Line 22: _Line 23: 							if (group.isOrganization()) {_Line 24: 								Role role = RoleLocalServiceUtil.getRole(companyId, "Organization Content Reviewer");_Line 25: _Line 26: 								roles.add(role);_Line 27: 							}_Line 28: 							else {_Line 29: 				Role role = RoleLocalServiceUtil.getRole(companyId, "Site Content Reviewer");_Line 30: _Line 31: 								roles.add(role);_Line 32: 							}_Line 33: _Line 34: 							user = null;_Line 35: 		_Line 36: 					_ [Sanitized] 
	at com.liferay.portal.kernel.messaging.BaseMessageListener.receive(BaseMessageListener.java:32) 
	at com.liferay.portal.kernel.messaging.InvokerMessageListener.receive(InvokerMessageListener.java:74) 
	at com.liferay.portal.kernel.messaging.ParallelDestination$1.run(ParallelDestination.java:52) 
	at com.liferay.portal.kernel.concurrent.ThreadPoolExecutor$WorkerTask._runTask(ThreadPoolExecutor.java:756) 
	at com.liferay.portal.kernel.concurrent.ThreadPoolExecutor$WorkerTask.run(ThreadPoolExecutor.java:667) 
	at java.lang.Thread.run(Thread.java:745) 
Caused by: com.liferay.portal.kernel.scripting.ScriptingException: startup failed:_Script1.groovy: 3: unable to resolve class com.liferay.calendar.service.CalendarBookingLocalServiceUtil_ @ line 3, column 8._   							import com.liferay.calendar.service.CalendarBookingLocalServiceUtil;_          ^__1 error__Line 1: _Line 2: 					_Line 3: 							import com.liferay.calendar.service.CalendarBookingLocalServiceUtil;_Line 4: 							import com.liferay.portal.kernel.model.Group;_Line 5: 				import com.liferay.portal.kernel.model.Role;_Line 6: 							import com.liferay.portal.kernel.service.GroupLocalServiceUtil;_Line 7: 							import com.liferay.portal.kernel.service.RoleLocalServiceUtil;_Line 8: 							import com.liferay.portal.kernel.util.GetterUtil;_Line 9: 							import com.liferay.portal.kernel.workflow.WorkflowConstants;_Line 10: _Line 11: 							long companyId = GetterUtil.getLong((String)workflowContext.get(WorkflowConstants.CONTEXT_COMPANY_ID));_Line 12: _Line 13: 							long groupId = GetterUtil.getLong((String)workflowContext.get(WorkflowConstants.CONTEXT_GROUP_ID));_Line 14: _Line 15: 							Group group = GroupLocalServiceUtil.getGroup(groupId);_Line 16: _Line 17: 			roles = new ArrayList<Role>();_Line 18: _Line 19: 							Role adminRole = RoleLocalServiceUtil.getRole(companyId, "Administrator");_Line 20: _Line 21: 							roles.add(adminRole);_Line 22: _Line 23: 							if (group.isOrganization()) {_Line 24: 								Role role = RoleLocalServiceUtil.getRole(companyId, "Organization Content Reviewer");_Line 25: _Line 26: 								roles.add(role);_Line 27: 							}_Line 28: 							else {_Line 29: 								Role role = RoleLocalServiceUtil.getRole(companyId, "Site Content Reviewer");_Line 30: _Line 31: 								roles.add(role);_Line 32: 			}_Line 33: _Line 34: 							user = null;_Line 35: 						_Line 36: 				_ [Sanitized] 
	at com.liferay.portal.scripting.internal.ScriptingImpl.eval(ScriptingImpl.java:91) 
	at com.liferay.portal.workflow.kaleo.runtime.scripting.internal.assignment.ScriptingLanguagesTaskAssignmentSelector.calculateTaskAssignments(ScriptingLanguagesTaskAssignmentSelector.java:65) 
	at com.liferay.portal.workflow.kaleo.runtime.internal.assignment.MultiLanguageTaskAssignmentSelector.calculateTaskAssignments(MultiLanguageTaskAssignmentSelector.java:81) 
	at com.liferay.portal.workflow.kaleo.runtime.internal.node.TaskNodeExecutor.createTaskInstanceToken(TaskNodeExecutor.java:122) 
	at com.liferay.portal.workflow.kaleo.runtime.internal.node.TaskNodeExecutor.doEnter(TaskNodeExecutor.java:159) 
	at com.liferay.portal.workflow.kaleo.runtime.node.BaseNodeExecutor.enter(BaseNodeExecutor.java:51) 
	at com.liferay.portal.workflow.kaleo.runtime.internal.graph.DefaultGraphWalker.follow(DefaultGraphWalker.java:65) 
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) 
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
	at java.lang.reflect.Method.invoke(Method.java:498) 
	at com.liferay.portal.spring.aop.ServiceBeanMethodInvocation.proceed(ServiceBeanMethodInvocation.java:153) 
	at com.liferay.portal.spring.transaction.DefaultTransactionExecutor.execute(DefaultTransactionExecutor.java:54) 
	at com.liferay.portal.spring.transaction.TransactionInterceptor.invoke(TransactionInterceptor.java:58) 
	at com.liferay.portal.spring.aop.ServiceBeanMethodInvocation.proceed(ServiceBeanMethodInvocation.java:127) 
	at com.liferay.portal.spring.aop.ServiceBeanAopProxy.invoke(ServiceBeanAopProxy.java:174) 
	at com.sun.proxy.$Proxy390.follow(Unknown Source) 
	at com.liferay.portal.workflow.kaleo.runtime.internal.graph.messaging.PathElementMessageListener.doReceive(PathElementMessageListener.java:57) 
	at com.liferay.portal.kernel.messaging.BaseMessageListener.receive(BaseMessageListener.java:26) 
	... 5 more 
Caused by: org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed:_Script1.groovy: 3: unable to resolve class com.liferay.calendar.service.CalendarBookingLocalServiceUtil_ @ line 3, column 8._   							import com.liferay.calendar.service.CalendarBookingLocalServiceUtil;_          ^__1 error_ [Sanitized] 
	at org.codehaus.groovy.control.ErrorCollector.failIfErrors(ErrorCollector.java:310) 
	at org.codehaus.groovy.control.CompilationUnit.applyToSourceUnits(CompilationUnit.java:946) 
	at org.codehaus.groovy.control.CompilationUnit.doPhaseOperation(CompilationUnit.java:593) 
	at org.codehaus.groovy.control.CompilationUnit.compile(CompilationUnit.java:542) 
	at groovy.lang.GroovyClassLoader.doParseClass(GroovyClassLoader.java:298) 
	at groovy.lang.GroovyClassLoader.parseClass(GroovyClassLoader.java:268) 
	at groovy.lang.GroovyShell.parseClass(GroovyShell.java:694) 
	at groovy.lang.GroovyShell.parse(GroovyShell.java:706) 
	at groovy.lang.GroovyShell.parse(GroovyShell.java:742) 
	at groovy.lang.GroovyShell.parse(GroovyShell.java:733) 
	at com.liferay.portal.scripting.groovy.internal.GroovyExecutor.eval(GroovyExecutor.java:58) 
	at com.liferay.portal.scripting.internal.ScriptingImpl.eval(ScriptingImpl.java:87) 
	... 23 more