Customized Struts Action not applied after restart: StrutsActionRegistryUtil should use ServiceTrackerMap

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 7.0.0 DXP FP23, 7.0.X EE, Master
• Fix Version/s: 7.0.0 DXP FP33, 7.0.0 DXP FP35, 7.0.0 DXP SP7, 7.0.5 CE GA6, 7.0.X, 7.1.0 M1, 7.1.X, Master
• Component/s: Core Infrastructure
• Labels:
  • ee-ts
  • liferay-digital-enterprise-70-sp7
  • liferay-fixpack-de-33-7010
  • liferay-fixpack-de-35-7010
• Branch Version/s:
  7.0.x
• Backported to Branch:
  Committed
• Story Points: 1.5
• Fix Priority: 3
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/53277

Steps to Reproduce - 70x

1. Start portal
2. Create and deploy a custom module which customizes one of our portal StrutsAction (find attached), for example

   package com.test
   
   import com.liferay.portal.comment.action.EditDiscussionStrutsAction;
   import com.liferay.portal.kernel.log.Log;
   import com.liferay.portal.kernel.log.LogFactoryUtil;
   import com.liferay.portal.kernel.struts.StrutsAction;
   import org.osgi.service.component.annotations.Component;
   
   import javax.servlet.http.HttpServletRequest;
   import javax.servlet.http.HttpServletResponse;
   
   
   @Component(
   		immediate = true,
   		property = {
   			"path=/portal/comment/edit_discussion"
   		},
   		service = StrutsAction.class)
   public class CustomEditDiscussionAction extends EditDiscussionStrutsAction {
   
   	/** Defines the logger instance. */
   	private static final Log _log = LogFactoryUtil.getLog(CustomEditDiscussionAction.class);
   
   	@Override
   	public String execute(HttpServletRequest request, HttpServletResponse response) throws Exception {
   		_log.info("CustomEditDiscussionAction.execute()");
   
   		return super.execute(request, response);
   	}
   }
   

   Note: this example no longer applicable for master as "comment/edit_discussion" StrutsAction has been modularized into "collaboration/comment/comment-taglib".

3. Add "Page Comments" to a page
4. Post a comment
   Result: "CustomEditDiscussionAction.execute()" is printed in the log
5. Restart the portal
6. Comment again
   Result: No message in the log, custom action is not executed

Workaround: Modify component annotation and use "server.ranking":

@Component(
		immediate = true,
		property = {
			"path=/portal/comment/edit_discussion",
			"service.ranking:Integer=-1"
		},
		service = StrutsAction.class)

Technical Background
StrutsActionRegistryUtil should use ServiceTrackerMap