Castor app - Needs final review and merge

Change-Id: Ieb32596216ac848e9661c0785427bfe96fb958c6
diff --git a/apps/castor/src/main/java/org/onosproject/castor/Castor.java b/apps/castor/src/main/java/org/onosproject/castor/Castor.java
new file mode 100644
index 0000000..b604b77
--- /dev/null
+++ b/apps/castor/src/main/java/org/onosproject/castor/Castor.java
@@ -0,0 +1,63 @@
+/*
+ * Copyright 2016-present 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.castor;
+
+import org.apache.felix.scr.annotations.Activate;
+import org.apache.felix.scr.annotations.Component;
+import org.apache.felix.scr.annotations.Deactivate;
+import org.apache.felix.scr.annotations.Reference;
+import org.apache.felix.scr.annotations.ReferenceCardinality;
+import org.onosproject.app.ApplicationService;
+import org.onosproject.core.ApplicationId;
+import org.onosproject.core.CoreService;
+import org.onosproject.routing.IntentSynchronizationService;
+import org.slf4j.Logger;
+
+import static org.slf4j.LoggerFactory.getLogger;
+
+/**
+ * Component of the Castor Class.
+ */
+
+@Component(immediate = true)
+public class Castor {
+
+    public static final String CASTOR_APP = "org.onosproject.castor";
+    private final Logger log = getLogger(getClass());
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    protected CoreService coreService;
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    protected ApplicationService applicationService;
+
+    @Reference(cardinality = ReferenceCardinality.MANDATORY_UNARY)
+    protected IntentSynchronizationService intentSynchronizer;
+
+    private ApplicationId appId;
+
+    @Activate
+    protected void activate() {
+        appId = coreService.registerApplication(CASTOR_APP);
+        applicationService.registerDeactivateHook(appId, () -> {
+            intentSynchronizer.removeIntentsByAppId(appId);
+        });
+    }
+
+    @Deactivate
+    protected void deactivate() {
+    }
+}