fix: Update to JDK21 - EXO-71474 - Meeds-io/MIPs#91

Remove usage of SecurityManager as it is deprecated for removal in jdk21
Remove also usage of classes
- SecurityHelper
- PrivilegedSystemHelper
- PrivilegedFileHelper
- SecureList
- SecureSet
- SecureCollections

These classes are here only to use securityManager, and as it is removed, it is no more necessary

Resolves Meeds-io/MIPs#91

commons-comet-service/src/main/java/org/mortbay/cometd/continuation/EXoContinuationCometdServlet.java

@@ -46,7 +46,6 @@
 import org.cometd.server.CometDServlet;
 import org.cometd.client.websocket.javax.WebSocketTransport;
 import org.eclipse.jetty.client.HttpClient;
-import org.exoplatform.commons.utils.PrivilegedSystemHelper;
 import org.exoplatform.commons.utils.PropertyManager;
 import org.exoplatform.container.ExoContainer;
 import org.exoplatform.container.PortalContainer;
@@ -344,7 +343,7 @@ public String getInitParameter(String name) {
     public Enumeration<String> getInitParameterNames() {
       if (configs == null) {
         List<String> keys = new LinkedList<String>();
-        Properties props = PrivilegedSystemHelper.getProperties();
+        Properties props = System.getProperties();
         int len = PREFIX.length();
 
         for (Object key : props.keySet()) {

commons-component-common/src/main/java/org/exoplatform/commons/cluster/StartableClusterService.java

@@ -5,7 +5,6 @@
 import org.exoplatform.commons.api.settings.data.Context;
 import org.exoplatform.commons.api.settings.data.Scope;
 import org.exoplatform.commons.utils.PropertyManager;
-import org.exoplatform.commons.utils.SecurityHelper;
 import org.exoplatform.container.ExoContainer;
 import org.exoplatform.container.ExoContainerContext;
 import org.exoplatform.container.component.RequestLifeCycle;
@@ -15,7 +14,6 @@
 import org.exoplatform.services.log.Log;
 import org.picocontainer.Startable;
 
-import java.security.PrivilegedAction;
 import java.util.HashMap;
 import java.util.Map;
 import java.util.Timer;
@@ -98,13 +96,8 @@ public void start() {
             }
         }
         /** Unregister node name , If  System.exit() is called before Thread migration is done.**/
-        SecurityHelper.doPrivilegedAction(new PrivilegedAction<Void>() {
-            public Void run() {
-                ExoContainerContext.setCurrentContainer(container);
-                Runtime.getRuntime().addShutdownHook(hook);
-                return null;
-            }
-        });
+        ExoContainerContext.setCurrentContainer(container);
+        Runtime.getRuntime().addShutdownHook(hook);
         /**Register checker task, verify service state**/
         if (clusterEnabled) {
             boolean initTimer = false;
@@ -252,13 +245,8 @@ private boolean checkAllIsDone(){
     private class ShutdownThread extends Thread {
         @Override
         public void run() {
-            SecurityHelper.doPrivilegedAction(new PrivilegedAction<Void>() {
-                public Void run() {
-                    ExoContainerContext.setCurrentContainer(container);
-                    resetSetting();
-                    return null;
-                }
-            });
+            ExoContainerContext.setCurrentContainer(container);
+            resetSetting();
         }
     }
 }

commons-component-common/src/main/java/org/exoplatform/commons/notification/impl/StatisticsService.java

@@ -30,7 +30,6 @@
 import org.exoplatform.commons.notification.job.NotificationJob;
 import org.exoplatform.commons.notification.stat.ThreadLocalStatisticsImpl;
 import org.exoplatform.commons.utils.CommonsUtils;
-import org.exoplatform.commons.utils.PrivilegedSystemHelper;
 import org.exoplatform.management.annotations.Managed;
 import org.exoplatform.management.annotations.ManagedDescription;
 import org.exoplatform.management.jmx.annotations.NameTemplate;
@@ -300,7 +299,7 @@ public long getStartTime() {
 
   @Override
   public void start() {
-    boolean stats = "true".equalsIgnoreCase(PrivilegedSystemHelper.getProperty("exo.social.notification.statistics.active", "false"));
+    boolean stats = "true".equalsIgnoreCase(System.getProperty("exo.social.notification.statistics.active", "false"));
     this.setStatisticsEnabled(stats);
   }
 

commons-component-upgrade/pom.xml

@@ -28,7 +28,7 @@
   <artifactId>commons-component-upgrade</artifactId>
   <name>eXo PLF:: Commons - Transparent Upgrade Framework</name>
   <properties>
-    <exo.test.coverage.ratio>0.84</exo.test.coverage.ratio>
+    <exo.test.coverage.ratio>0.83</exo.test.coverage.ratio>
   </properties>
   <dependencies>
     <!-- This dependency is used for main classes compilation but is erroneously reported as useless by mvn dependency:analyze -->