1 files changed, 88 insertions, 0 deletions
diff --git a/feature-lifecycle/src/main/java/org/onap/policy/drools/lifecycle/LifecycleStateDefault.java b/feature-lifecycle/src/main/java/org/onap/policy/drools/lifecycle/LifecycleStateDefault.java
new file mode 100644
index 00000000..18e40012
--- /dev/null
+++ b/feature-lifecycle/src/main/java/org/onap/policy/drools/lifecycle/LifecycleStateDefault.java
@@ -0,0 +1,88 @@
+/*
+ * ============LICENSE_START=======================================================
+ * ONAP
+ * ================================================================================
+ * Copyright (C) 2019 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * 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.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.policy.drools.lifecycle;
+
+import lombok.NonNull;
+import org.onap.policy.models.pdp.enums.PdpState;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+/**
+ * Support class for default functionality for operational states.
+ */
+public abstract class LifecycleStateDefault extends LifecycleStateUnsupported {
+
+    private static final Logger logger = LoggerFactory.getLogger(LifecycleState.class);
+
+    public LifecycleStateDefault(LifecycleFsm manager) {
+        super(manager);
+    }
+
+
+    @Override
+    public boolean transitionToState(@NonNull LifecycleState newState) {
+        logger.info("{}: state-change from {} to {}", this, state(), newState.state());
+
+        synchronized (fsm) {
+            if (state() == newState.state()) {
+                return false;
+            }
+
+            fsm.transitionToAction(newState);
+            return true;
+        }
+    }
+
+    @Override
+    public boolean start() {
+        logger.warn("{}: start", this);
+        return false;
+    }
+
+    @Override
+    public boolean stop() {
+        synchronized (fsm) {
+            boolean success = fsm.statusAction(PdpState.TERMINATED);
+            success = fsm.stopAction() && success;
+            return transitionToState(new LifecycleStateTerminated(fsm)) && success;
+        }
+    }
+
+    @Override
+    public void shutdown() {
+        synchronized (fsm) {
+            stop();
+            fsm.shutdownAction();
+        }
+    }
+
+    @Override
+    public boolean isAlive() {
+        return true;
+    }
+
+    @Override
+    public boolean status() {
+        synchronized (fsm) {
+            return fsm.statusAction(state());
+        }
+    }
+}