ONOS-1896 : enum Permission added, DefaultPermission removed

Change-Id: Ie75313acc9adeaee9c5a55978b5ec8e8fb5bf9b6

-/*
- * Copyright 2015 Open Networking Laboratory
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package org.onosproject.core;
-
-import java.security.BasicPermission;
-
-/**
- * Default implementation of ONOS application permissions for API-level access control.
- */
-public class DefaultPermission extends BasicPermission implements Permission {
-
-    public enum Type {
-        APP_READ,
-        APP_EVENT,
-        CONFIG_READ,
-        CONFIG_WRITE,
-        CLUSTER_READ,
-        CLUSTER_WRITE,
-        CLUSTER_EVENT,
-        DEVICE_READ,
-        DEVICE_EVENT,
-        DRIVER_READ,
-        DRIVER_WRITE,
-        FLOWRULE_READ,
-        FLOWRULE_WRITE,
-        FLOWRULE_EVENT,
-        GROUP_READ,
-        GROUP_WRITE,
-        GROUP_EVENT,
-        HOST_READ,
-        HOST_WRITE,
-        HOST_EVENT,
-        INTENT_READ,
-        INTENT_WRITE,
-        INTENT_EVENT,
-        LINK_READ,
-        LINK_WRITE,
-        LINK_EVENT,
-        PACKET_READ,
-        PACKET_WRITE,
-        PACKET_EVENT,
-        STATISTIC_READ,
-        TOPOLOGY_READ,
-        TOPOLOGY_EVENT,
-        TUNNEL_READ,
-        TUNNEL_WRITE,
-        TUNNEL_EVENT,
-        STORAGE_WRITE
-    }
-
-    /**
-     * Creates a new DefaultPermission.
-     * @param name      name of the permission
-     * @param actions   optional action field
-     */
-    public DefaultPermission(String name, String actions) {
-        super(name, actions);
-    }
-
-    /**
-     * Creates a new DefaultPermission.
-     * @param name      name of the permission
-     */
-    public DefaultPermission(String name) {
-        super(name, "");
-    }
-
-    public DefaultPermission(Type permtype) {
-        super(permtype.name(), "");
-    }
-
-    @Override
-    public String name() {
-        return super.getName();
-    }
-
-    @Override
-    public String actions() {
-        return super.getActions();
-    }
-}

@@ -18,17 +18,41 @@ package org.onosproject.core;
 /**
  * Representation of an application permission.
  */
-public interface Permission {
-
-    /**
-     * Returns the name of the permission.
-     * @return a string value
-     */
-    String name();
-
-    /**
-     * Returns the actions string of the permission if specified.
-     * @return a string value
-     */
-    String actions();
+public enum Permission {
+    APP_READ,
+    APP_EVENT,
+    CONFIG_READ,
+    CONFIG_WRITE,
+    CLUSTER_READ,
+    CLUSTER_WRITE,
+    CLUSTER_EVENT,
+    DEVICE_READ,
+    DEVICE_EVENT,
+    DRIVER_READ,
+    DRIVER_WRITE,
+    FLOWRULE_READ,
+    FLOWRULE_WRITE,
+    FLOWRULE_EVENT,
+    GROUP_READ,
+    GROUP_WRITE,
+    GROUP_EVENT,
+    HOST_READ,
+    HOST_WRITE,
+    HOST_EVENT,
+    INTENT_READ,
+    INTENT_WRITE,
+    INTENT_EVENT,
+    LINK_READ,
+    LINK_WRITE,
+    LINK_EVENT,
+    PACKET_READ,
+    PACKET_WRITE,
+    PACKET_EVENT,
+    STATISTIC_READ,
+    TOPOLOGY_READ,
+    TOPOLOGY_EVENT,
+    TUNNEL_READ,
+    TUNNEL_WRITE,
+    TUNNEL_EVENT,
+    STORAGE_WRITE
 }

@@ -19,7 +19,6 @@ import com.google.common.collect.ImmutableList;
 import com.google.common.collect.ImmutableSet;
 import org.junit.Test;
 import org.onosproject.core.ApplicationRole;
-import org.onosproject.core.DefaultPermission;
 import org.onosproject.core.Permission;
 import org.onosproject.core.Version;
 
@@ -29,8 +28,6 @@ import java.util.Set;
 
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertTrue;
-import static org.onosproject.core.DefaultPermission.Type.FLOWRULE_WRITE;
-import static org.onosproject.core.DefaultPermission.Type.FLOWRULE_READ;
 
 
 /**
@@ -43,8 +40,7 @@ public class DefaultApplicationDescriptionTest {
     public static final String DESC = "Awesome application from Circus";
     public static final String ORIGIN = "Circus";
     public static final ApplicationRole ROLE = ApplicationRole.ADMIN;
-    public static final Set<Permission> PERMS = ImmutableSet.of(new DefaultPermission(FLOWRULE_WRITE),
-                    new DefaultPermission(FLOWRULE_READ));
+    public static final Set<Permission> PERMS = ImmutableSet.of(Permission.FLOWRULE_WRITE, Permission.FLOWRULE_READ);
     public static final URI FURL = URI.create("mvn:org.foo-features/1.2a/xml/features");
     public static final List<String> FEATURES = ImmutableList.of("foo", "bar");
 

@@ -28,7 +28,6 @@ import org.onosproject.app.ApplicationException;
 import org.onosproject.app.ApplicationStoreDelegate;
 import org.onosproject.app.DefaultApplicationDescription;
 import org.onosproject.core.ApplicationRole;
-import org.onosproject.core.DefaultPermission;
 import org.onosproject.core.Permission;
 import org.onosproject.core.Version;
 import org.onosproject.store.AbstractStore;
@@ -378,21 +377,20 @@ public class ApplicationArchive
 
     // Returns the set of Permissions specified in the app.xml file
     private ImmutableSet<Permission> getPermissions(XMLConfiguration cfg) {
-        List<Permission> perms = new ArrayList();
+        List<Permission> permissionList = new ArrayList();
         for (Object o : cfg.getList(PERMISSIONS)) {
-            DefaultPermission perm = null;
-            if (o != null) {
-                String permStr = (String) o;
-                perm = new DefaultPermission(permStr);
-            }
-            if (perm != null) {
-                perms.add(perm);
+            String name = (String) o;
+            try {
+                Permission perm = Permission.valueOf(name);
+                permissionList.add(perm);
+            } catch (IllegalArgumentException e) {
+                log.debug("Unknown permission specified: %s", name);
             }
         }
-
-        return ImmutableSet.copyOf(perms);
+        return ImmutableSet.copyOf(permissionList);
     }
 
+    //
     // Returns application role type
     public ApplicationRole getRole(String value) {
         if (value == null) {

@@ -25,11 +25,9 @@ import org.onosproject.common.app.ApplicationArchive;
 import org.onosproject.core.Application;
 import org.onosproject.core.ApplicationId;
 import org.onosproject.core.Permission;
-import org.onosproject.core.DefaultPermission;
 import org.onosproject.core.ApplicationIdStoreAdapter;
 import org.onosproject.core.DefaultApplicationId;
 
-import static org.onosproject.core.DefaultPermission.Type.FLOWRULE_WRITE;
 import static org.junit.Assert.assertEquals;
 import static org.onosproject.app.ApplicationEvent.Type.APP_INSTALLED;
 import static org.onosproject.app.ApplicationEvent.Type.APP_DEACTIVATED;
@@ -106,7 +104,7 @@ public class SimpleApplicationStoreTest {
     @Test
     public void permissions() {
         Application app = createTestApp();
-        ImmutableSet<Permission> permissions = ImmutableSet.of(new DefaultPermission(FLOWRULE_WRITE));
+        ImmutableSet<Permission> permissions = ImmutableSet.of(Permission.FLOWRULE_WRITE);
         store.setPermissions(app.id(), permissions);
         assertEquals("incorrect app perms", 1, store.getPermissions(app.id()).size());
         assertEquals("incorrect app state", INSTALLED, store.getState(app.id()));