1 files changed, 102 insertions, 0 deletions
diff --git a/appc-lifecycle-management/appc-lifecycle-management-core/src/main/java/org/onap/appc/lifecyclemanager/impl/LifecycleManagerImpl.java b/appc-lifecycle-management/appc-lifecycle-management-core/src/main/java/org/onap/appc/lifecyclemanager/impl/LifecycleManagerImpl.java
new file mode 100644
index 000000000..12c48b481
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+++ b/appc-lifecycle-management/appc-lifecycle-management-core/src/main/java/org/onap/appc/lifecyclemanager/impl/LifecycleManagerImpl.java
@@ -0,0 +1,102 @@
+/*-
+ * ============LICENSE_START=======================================================
+ * ONAP : APPC
+ * ================================================================================
+ * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * Copyright (C) 2017 Amdocs
+ * =============================================================================
+ * 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.
+ * 
+ * ECOMP is a trademark and service mark of AT&T Intellectual Property.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.appc.lifecyclemanager.impl;
+
+import com.att.eelf.configuration.EELFLogger;
+import com.att.eelf.configuration.EELFManager;
+import com.att.eelf.i18n.EELFResourceManager;
+import org.onap.appc.exceptions.InvalidInputException;
+import org.onap.appc.i18n.Msg;
+import org.onap.appc.lifecyclemanager.LifecycleManager;
+import org.onap.appc.lifecyclemanager.objects.LifecycleException;
+import org.onap.appc.lifecyclemanager.objects.NoTransitionDefinedException;
+import org.onap.appc.statemachine.StateMachine;
+import org.onap.appc.statemachine.StateMetaDataReader;
+import org.onap.appc.statemachine.impl.StateMachineFactory;
+import org.onap.appc.statemachine.impl.readers.AppcOamMetaDataReader;
+import org.onap.appc.statemachine.impl.readers.VnfMetaDataReader;
+import org.onap.appc.statemachine.objects.*;
+
+import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
+
+public class LifecycleManagerImpl implements LifecycleManager{
+
+    private StateMetaDataReader metadataReader;
+    private static Map<String,StateMachine> stateMachineMap = new ConcurrentHashMap<>();
+    private final EELFLogger logger = EELFManager.getInstance().getLogger(LifecycleManagerImpl.class);
+    private final EELFLogger errorLogger = EELFManager.getInstance().getErrorLogger();
+
+    @Override
+    public String getNextState(String vnfType, String currentState, String event) throws NoTransitionDefinedException,LifecycleException{
+        if (logger.isTraceEnabled()) {
+            logger.trace("Entering to getNextState with vnfType = "+ vnfType +    ", currentState = " + currentState + ", event = " + event);
+        }
+
+        State nextState;
+        StateMachine machine;
+        StateMachineResponse response;
+        try {
+            machine = this.getStateMachine(vnfType);
+            response = machine.handleEvent(new State(currentState),new Event(event));
+            if(Response.NO_TRANSITION_DEFINED.equals(response.getResponse())){
+                errorLogger.error(EELFResourceManager.format(Msg.VF_ILLEGAL_COMMAND, vnfType,event,currentState));
+                throw new NoTransitionDefinedException("No Transition Defined for currentState = " +  currentState + ", event = " + event,currentState,event);
+            }
+            nextState = response.getNextState();
+        } catch (InvalidInputException e) {
+            logger.error(e.getMessage());
+            throw new LifecycleException(e,currentState,event);
+        }
+        if (logger.isTraceEnabled()) {
+            logger.trace("Exiting from getNextState with (nextState = " + nextState.getStateName() + ")");
+        }
+        return nextState.getStateName();
+    }
+
+    private StateMachine getStateMachine(String vnfType){
+        if (logger.isTraceEnabled()) {
+            logger.trace("Entering to getNextState with vnfType = "+ vnfType);
+        }
+        if(vnfType == null){
+            vnfType = "DEFAULT";
+        }
+        StateMachine machine = stateMachineMap.get(vnfType);
+        if(machine == null){
+            metadataReader = getMetadataReader(vnfType);
+            StateMachineMetadata metadata = metadataReader.readMetadata();
+            machine = StateMachineFactory.getStateMachine(metadata);
+            stateMachineMap.put(vnfType,machine);
+        }
+
+        logger.trace("Exiting getStateMachine with StateMachine = " + stateMachineMap.get(vnfType).toString());
+        return stateMachineMap.get(vnfType);
+    }
+
+    private StateMetaDataReader getMetadataReader(String vnfType) {
+        return vnfType.equals("APPC") ? new AppcOamMetaDataReader() : new VnfMetaDataReader();
+    }
+
+}