[APPC-44] APPC Lifecycle Management refactor

Pull APPC lifecycle Management out of APPC dispatcher, so that it can be
used by both APPC dispatcher and APPC OAM. This is the pre-step of
introducing APPC OAM operations.

Issue-Id: APPC-44
Change-Id: Icbde399b5121fae9e1919cfdd5c77bbe55d61188
Signed-off-by: beili.zhou <beili.zhou@amdocs.com>

7 files changed, 586 insertions, 0 deletions

diff --git a/appc-lifecycle-management/appc-lifecycle-management-core/.gitignore b/appc-lifecycle-management/appc-lifecycle-management-core/.gitignore
new file mode 100644
index 000000000..b83d22266
--- /dev/null
+++ b/appc-lifecycle-management/appc-lifecycle-management-core/.gitignore
@@ -0,0 +1 @@
+/target/
diff --git a/appc-lifecycle-management/appc-lifecycle-management-core/pom.xml b/appc-lifecycle-management/appc-lifecycle-management-core/pom.xml
new file mode 100644
index 000000000..f7e911555
--- /dev/null
+++ b/appc-lifecycle-management/appc-lifecycle-management-core/pom.xml
@@ -0,0 +1,73 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+
+    <!--
+
+        Licensed to the Apache Software Foundation (ASF) under one or more
+        contributor license agreements.  See the NOTICE file distributed with
+        this work for additional information regarding copyright ownership.
+        The ASF licenses this file to You 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.
+    -->
+
+    <parent>
+        <groupId>org.openecomp.appc</groupId>
+        <artifactId>appc-lifecycle-management</artifactId>
+        <version>1.1.0-SNAPSHOT</version>
+    </parent>
+
+    <modelVersion>4.0.0</modelVersion>
+    <artifactId>appc-lifecycle-management-core</artifactId>
+    <packaging>bundle</packaging>
+
+    <name>appc-lifecycle-management-core Bundle</name>
+    <description>appc-lifecycle-management-core OSGi bundle project.</description>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.openecomp.appc</groupId>
+            <artifactId>appc-lifecycle-management-api</artifactId>
+            <version>${project.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>org.openecomp.appc</groupId>
+            <artifactId>state-machine-lib</artifactId>
+            <version>${project.version}</version>
+        </dependency>
+        <dependency>
+            <groupId>com.att.eelf</groupId>
+            <artifactId>eelf-core</artifactId>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.felix</groupId>
+                <artifactId>maven-bundle-plugin</artifactId>
+                <configuration>
+                    <instructions>
+                        <Bundle-SymbolicName>${project.artifactId}</Bundle-SymbolicName>
+                        <Bundle-Version>${project.version}</Bundle-Version>
+                        <Embed-Transitive>true</Embed-Transitive>
+                        <Export-Service>org.openecomp.appc.lifecyclemanager.LifecycleManager</Export-Service>
+                        <Import-Package>
+                            org.openecomp.appc.lifecyclemanager.*,
+                            *;resolution:=optional
+                        </Import-Package>
+                    </instructions>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
+
+</project>
diff --git a/appc-lifecycle-management/appc-lifecycle-management-core/src/main/java/org/openecomp/appc/lifecyclemanager/impl/LifecycleManagerImpl.java b/appc-lifecycle-management/appc-lifecycle-management-core/src/main/java/org/openecomp/appc/lifecyclemanager/impl/LifecycleManagerImpl.java
new file mode 100644
index 000000000..890218e92
--- /dev/null
+++ b/appc-lifecycle-management/appc-lifecycle-management-core/src/main/java/org/openecomp/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.openecomp.appc.lifecyclemanager.impl;

+

+import com.att.eelf.configuration.EELFLogger;

+import com.att.eelf.configuration.EELFManager;

+import com.att.eelf.i18n.EELFResourceManager;

+import org.openecomp.appc.exceptions.InvalidInputException;

+import org.openecomp.appc.i18n.Msg;

+import org.openecomp.appc.lifecyclemanager.LifecycleManager;

+import org.openecomp.appc.lifecyclemanager.objects.LifecycleException;

+import org.openecomp.appc.lifecyclemanager.objects.NoTransitionDefinedException;

+import org.openecomp.appc.statemachine.StateMachine;

+import org.openecomp.appc.statemachine.StateMetaDataReader;

+import org.openecomp.appc.statemachine.impl.StateMachineFactory;

+import org.openecomp.appc.statemachine.impl.readers.AppcOamMetaDataReader;

+import org.openecomp.appc.statemachine.impl.readers.VnfMetaDataReader;

+import org.openecomp.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();

+    }

+

+}

diff --git a/appc-lifecycle-management/appc-lifecycle-management-core/src/main/resources/OSGI-INF/blueprint/blueprint.xml b/appc-lifecycle-management/appc-lifecycle-management-core/src/main/resources/OSGI-INF/blueprint/blueprint.xml
new file mode 100644
index 000000000..77725db6c
--- /dev/null
+++ b/appc-lifecycle-management/appc-lifecycle-management-core/src/main/resources/OSGI-INF/blueprint/blueprint.xml
@@ -0,0 +1,34 @@
+<?xml version="1.0" encoding="UTF-8"?>

+<!--

+  ============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=========================================================

+  -->

+

+<blueprint xmlns="http://www.osgi.org/xmlns/blueprint/v1.0.0"

+           xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

+           xsi:schemaLocation="http://www.osgi.org/xmlns/blueprint/v1.0.0 http://www.osgi.org/xmlns/blueprint/v1.0.0/blueprint.xsd">

+    <bean id="lifecycleManagerBean" class="org.openecomp.appc.lifecyclemanager.impl.LifecycleManagerImpl" scope="singleton">

+    </bean>

+

+    <service id="lcmService" interface="org.openecomp.appc.lifecyclemanager.LifecycleManager" ref="lifecycleManagerBean"/>

+

+</blueprint>

diff --git a/appc-lifecycle-management/appc-lifecycle-management-core/src/main/resources/org/openecomp/appc/default.properties b/appc-lifecycle-management/appc-lifecycle-management-core/src/main/resources/org/openecomp/appc/default.properties
new file mode 100644
index 000000000..6b634cad7
--- /dev/null
+++ b/appc-lifecycle-management/appc-lifecycle-management-core/src/main/resources/org/openecomp/appc/default.properties
@@ -0,0 +1,39 @@
+###

+# ============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=========================================================

+###

+

+# Define the name and path of any user-provided configuration (bootstrap) file that can be loaded 

+# to supply configuration options 

+org.openecomp.appc.bootstrap.file=appc.properties

+org.openecomp.appc.bootstrap.path=/opt/openecomp/appc/data/properties,${user.home},.

+

+#Property below provided by appc.properties

+appc.LCM.provider.url=https://localhost:8443/restconf/operations/appc-provider-lcm

+appc.LCM.poolMembers=<DMAAP_IP>:3904

+appc.LCM.service=dmaap

+appc.LCM.topic.write=APPC-TEST2

+appc.LCM.client.name=APPC-TEST-CLIENT-LC-MGMT-MAIN

+appc.LCM.provider.user=test

+appc.LCM.provider.pass=test

+

+

diff --git a/appc-lifecycle-management/appc-lifecycle-management-core/src/test/java/org/openecomp/appc/LifecycleManagerTest.java b/appc-lifecycle-management/appc-lifecycle-management-core/src/test/java/org/openecomp/appc/LifecycleManagerTest.java
new file mode 100644
index 000000000..e58dcc901
--- /dev/null
+++ b/appc-lifecycle-management/appc-lifecycle-management-core/src/test/java/org/openecomp/appc/LifecycleManagerTest.java
@@ -0,0 +1,185 @@
+/*-

+ * ============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.openecomp.appc;

+

+import org.junit.Assert;

+import org.junit.Test;

+import org.openecomp.appc.exceptions.InvalidInputException;

+import org.openecomp.appc.lifecyclemanager.LifecycleManager;

+import org.openecomp.appc.statemachine.StateMetaDataReader;

+import org.openecomp.appc.lifecyclemanager.impl.LifecycleManagerImpl;

+import org.openecomp.appc.lifecyclemanager.objects.LifecycleException;

+import org.openecomp.appc.lifecyclemanager.objects.NoTransitionDefinedException;

+import org.openecomp.appc.statemachine.impl.readers.VnfMetaDataReader;

+import org.openecomp.appc.statemachine.impl.readers.VnfMetaDataReader.VNFOperation;

+import org.openecomp.appc.statemachine.objects.Event;

+import org.openecomp.appc.statemachine.objects.State;

+import org.openecomp.appc.statemachine.objects.StateMachineMetadata;

+import org.openecomp.appc.statemachine.objects.Transition;

+

+import java.util.*;

+

+

+public class LifecycleManagerTest {

+

+    private static final State[] VALID_LOCK_STATES = new State[] {

+            new State("instantiated"),

+            new State("configured"),

+            new State("tested"),

+            new State("running"),

+            new State("error"),

+            new State("unknown"),

+            new State("created"),

+            new State("not orchestrated"),

+            new State("stopped"),

+    };

+

+    @Test

+    public void handleEvent() throws InvalidInputException, LifecycleException, NoTransitionDefinedException {

+

+        StateMachineMetadata metadata = getMetaDataReader().readMetadata();

+        LifecycleManagerImpl lifecycleManager = new LifecycleManagerImpl();

+

+        /*

+         * Testing Positive Scenario passing the valid events and validating the StateMachineResponse

+         */

+        for(State state:metadata.getStates()){

+

+            for(Transition transition:state.getTransitions()){

+                Event event = transition.getEvent();

+                State nextStateFromMetadata = transition.getNextState();

+

+                String expectedNextState = lifecycleManager.getNextState(null,state.toString(),event.toString());

+                Assert.assertEquals(expectedNextState,nextStateFromMetadata.toString());

+            }

+        }

+

+        /*

+        Testing Negative Scenarios, 1. Passing the valid Events for which Transition is not defined in

+        Metadata and validating the StateMachineResponse 2. Passing the invalid events which are not

+        registered as events in the StateMachineMetadata and validating StateMachineResponse

+         */

+        for(State state:metadata.getStates()){

+

+            for(Transition transition:state.getTransitions()){

+                List<Event> negativeEvents = getNegativeEvents(state,metadata.getEvents());

+

+                for(Event negativeEvent:negativeEvents){

+                    boolean flag =false;

+                    try{

+                        lifecycleManager.getNextState(null,state.toString(),negativeEvent.toString());

+

+                    }

+                    catch (NoTransitionDefinedException e){

+                        flag =true;

+                    }

+                    Assert.assertEquals(flag,true);

+

+                    flag = false;

+                    try{

+                        lifecycleManager.getNextState(null,state.toString(),"PUT");

+                    }

+                    catch(LifecycleException e){

+                        flag = true;

+                    }

+                    Assert.assertTrue(flag);

+

+                }

+            }

+        }

+    }

+

+    @Test

+    public void testNotOrchestratedState() throws LifecycleException, NoTransitionDefinedException {

+        LifecycleManager lifecycleManager = new LifecycleManagerImpl();

+        String nextState = lifecycleManager.getNextState(

+                null,"NOT ORCHESTRATED",VNFOperation.Configure.toString());

+        Assert.assertEquals(nextState,"Configuring");

+    }

+

+    @Test(expected = NoTransitionDefinedException.class)

+    public void testBakckingUpState() throws LifecycleException, NoTransitionDefinedException {

+        LifecycleManager lifecycleManager = new LifecycleManagerImpl();

+        lifecycleManager.getNextState(null,"Software_Uploading",VNFOperation.Configure.toString());

+    }

+

+    private List<Event> getNegativeEvents(State state,Set<Event> events) {

+        List<Event> negativeEventList = new ArrayList<>();

+        negativeEventList.addAll(events);

+

+        for(Transition transition: state.getTransitions()){

+            negativeEventList.remove(transition.getEvent());

+        }

+        return negativeEventList;

+    }

+

+    @Test

+    public void testLockStates() throws LifecycleException, NoTransitionDefinedException {

+        StateMachineMetadata metadata = getMetaDataReader().readMetadata();

+        LifecycleManagerImpl lifecycleManager = new LifecycleManagerImpl();

+

+        for(State state: metadata.getStates()) {

+            if(isValidState(state, VALID_LOCK_STATES)) {

+                assertSameNextState(lifecycleManager, state, VNFOperation.Lock);

+                assertSameNextState(lifecycleManager, state, VnfMetaDataReader.VNFOperation.Unlock);

+                assertSameNextState(lifecycleManager, state, VNFOperation.CheckLock);

+            } else {

+                assertNoNextState(lifecycleManager, state, VNFOperation.Lock);

+                assertNoNextState(lifecycleManager, state, VNFOperation.Unlock);

+                assertNoNextState(lifecycleManager, state, VNFOperation.CheckLock);

+            }

+        }

+    }

+

+    private boolean isValidState(State state, State[] validStates) {

+        for(State validState: validStates) {

+            if(validState.equals(state)) {

+                return true;

+            }

+        }

+        return false;

+    }

+

+    private void assertSameNextState(LifecycleManager lifecycleManager, State state, VNFOperation operation)

+            throws LifecycleException, NoTransitionDefinedException {

+        Assert.assertEquals(state.getStateName(),

+                lifecycleManager.getNextState("no-matter", state.getStateName(), operation.toString()));

+    }

+

+    private void assertNoNextState(LifecycleManager lifecycleManager, State state, VNFOperation operation)

+            throws LifecycleException {

+        try {

+            lifecycleManager.getNextState("no-matter", state.getStateName(), operation.toString());

+            Assert.fail("lifecycleManager.getNextState() should fail for state [" + state

+                    + "], operation [" + operation + "]");

+        } catch(NoTransitionDefinedException e) {

+            // this exception is excepted

+        }

+    }

+

+    private StateMetaDataReader getMetaDataReader() {

+        return new VnfMetaDataReader();

+    }

+}

diff --git a/appc-lifecycle-management/appc-lifecycle-management-core/src/test/java/org/openecomp/appc/OamLifeCycleManagerTest.java b/appc-lifecycle-management/appc-lifecycle-management-core/src/test/java/org/openecomp/appc/OamLifeCycleManagerTest.java
new file mode 100644
index 000000000..d3fe3eae7
--- /dev/null
+++ b/appc-lifecycle-management/appc-lifecycle-management-core/src/test/java/org/openecomp/appc/OamLifeCycleManagerTest.java
@@ -0,0 +1,152 @@
+/*-

+ * ============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.openecomp.appc;

+

+import org.junit.Assert;

+import org.junit.Before;

+import org.junit.Rule;

+import org.junit.Test;

+import org.junit.rules.ExpectedException;

+import org.openecomp.appc.lifecyclemanager.impl.LifecycleManagerImpl;

+import org.openecomp.appc.lifecyclemanager.objects.LifecycleException;

+import org.openecomp.appc.lifecyclemanager.objects.NoTransitionDefinedException;

+import org.openecomp.appc.statemachine.impl.readers.AppcOamMetaDataReader;

+import org.openecomp.appc.statemachine.impl.readers.AppcOamStates;

+

+import java.util.Arrays;

+import java.util.List;

+

+

+public class OamLifeCycleManagerTest {

+    private static final String VNF_TYPE_APPC = "APPC";

+    private static final String NO_DEFINITION_FORMAT = "No Transition Defined for currentState = %s, event = %s";

+

+    private LifecycleManagerImpl lifecycleManager;

+

+    @Rule

+    public ExpectedException expectedException = ExpectedException.none();

+

+    @Before

+    public void setUp() throws Exception {

+        lifecycleManager = new LifecycleManagerImpl();

+    }

+

+    private void validateProper(String state, String event, String expectedResult)

+            throws LifecycleException, NoTransitionDefinedException {

+        String nextState = lifecycleManager.getNextState(VNF_TYPE_APPC, state, event);

+        Assert.assertEquals(String.format("Should return %s", expectedResult), expectedResult, nextState);

+    }

+

+    private void validateException(String state, String event) throws LifecycleException, NoTransitionDefinedException {

+        expectedException.expect(NoTransitionDefinedException.class);

+        expectedException.expectMessage(String.format(NO_DEFINITION_FORMAT, state, event));

+        lifecycleManager.getNextState(VNF_TYPE_APPC, state, event);

+

+        // Reset to no expectation

+        expectedException = ExpectedException.none();

+    }

+

+    @Test

+    public void testOamStateTransitionForMaintenanceMode() throws Exception {

+        String event = AppcOamMetaDataReader.AppcOperation.MaintenanceMode.name();

+        String expecteResult = AppcOamStates.EnteringMaintenanceMode.toString();

+

+        for (AppcOamStates appcOamStates : AppcOamStates.values()) {

+            String state = appcOamStates.toString();

+            if (appcOamStates == AppcOamStates.Started) {

+                validateProper(state, event, expecteResult);

+            } else {

+                validateException(state, event);

+            }

+        }

+    }

+

+    @Test

+    public void testOamStateTransitionForStart() throws Exception {

+        String event = AppcOamMetaDataReader.AppcOperation.Start.name();

+        String expectResult = AppcOamStates.Starting.toString();

+

+        List<AppcOamStates> goodStates = Arrays.asList(

+                AppcOamStates.MaintenanceMode,

+                AppcOamStates.Stopped,

+                AppcOamStates.Stopping);

+

+        for (AppcOamStates appcOamStates : AppcOamStates.values()) {

+            String state = appcOamStates.toString();

+            if (goodStates.contains(appcOamStates)) {

+                validateProper(state, event, expectResult);

+            } else {

+                validateException(state, event);

+            }

+        }

+    }

+

+    @Test

+    public void testOamStateTransitionForStop() throws Exception {

+        String event = AppcOamMetaDataReader.AppcOperation.Stop.name();

+        String expectResult = AppcOamStates.Stopping.toString();

+

+        List<AppcOamStates> goodStates = Arrays.asList(

+                AppcOamStates.Error,

+                AppcOamStates.EnteringMaintenanceMode,

+                AppcOamStates.MaintenanceMode,

+                AppcOamStates.Started,

+                AppcOamStates.Starting);

+

+        for (AppcOamStates appcOamStates : AppcOamStates.values()) {

+            String state = appcOamStates.toString();

+            if (goodStates.contains(appcOamStates)) {

+                validateProper(state, event, expectResult);

+            } else {

+                validateException(state, event);

+            }

+        }

+    }

+

+

+    @Test

+    public void testOamStateTransitionForRestart() throws Exception {

+        String event = AppcOamMetaDataReader.AppcOperation.Restart.name();

+        String expectResult = AppcOamStates.Restarting.toString();

+

+        List<AppcOamStates> goodStates = Arrays.asList(

+                AppcOamStates.Error,

+                AppcOamStates.EnteringMaintenanceMode,

+                AppcOamStates.MaintenanceMode,

+                AppcOamStates.Started,

+                AppcOamStates.Starting,

+                AppcOamStates.Stopped,

+                AppcOamStates.Stopping);

+

+        for (AppcOamStates appcOamStates : AppcOamStates.values()) {

+            String state = appcOamStates.toString();

+            if (goodStates.contains(appcOamStates)) {

+                validateProper(state, event, expectResult);

+            } else {

+                validateException(state, event);

+            }

+        }

+    }

+}