| // 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. |
| |
| package org.apache.cloudstack.storage.snapshot; |
| |
| import javax.inject.Inject; |
| |
| import org.springframework.stereotype.Component; |
| |
| import com.cloud.storage.Snapshot; |
| import com.cloud.storage.Snapshot.Event; |
| import com.cloud.storage.Snapshot.State; |
| import com.cloud.storage.SnapshotVO; |
| import com.cloud.storage.dao.SnapshotDao; |
| import com.cloud.storage.listener.SnapshotStateListener; |
| import com.cloud.utils.fsm.NoTransitionException; |
| import com.cloud.utils.fsm.StateMachine2; |
| |
| @Component |
| public class SnapshotStateMachineManagerImpl implements SnapshotStateMachineManager { |
| private StateMachine2<State, Event, SnapshotVO> stateMachine = new StateMachine2<State, Event, SnapshotVO>(); |
| @Inject |
| protected SnapshotDao snapshotDao; |
| |
| public SnapshotStateMachineManagerImpl() { |
| stateMachine.addTransition(Snapshot.State.Allocated, Event.CreateRequested, Snapshot.State.Creating); |
| stateMachine.addTransition(Snapshot.State.Creating, Event.OperationSucceeded, Snapshot.State.CreatedOnPrimary); |
| stateMachine.addTransition(Snapshot.State.Creating, Event.OperationNotPerformed, Snapshot.State.BackedUp); |
| stateMachine.addTransition(Snapshot.State.Creating, Event.OperationFailed, Snapshot.State.Error); |
| stateMachine.addTransition(Snapshot.State.CreatedOnPrimary, Event.BackupToSecondary, Snapshot.State.BackingUp); |
| stateMachine.addTransition(Snapshot.State.CreatedOnPrimary, Event.OperationNotPerformed, Snapshot.State.BackedUp); |
| stateMachine.addTransition(Snapshot.State.BackingUp, Event.OperationSucceeded, Snapshot.State.BackedUp); |
| stateMachine.addTransition(Snapshot.State.BackingUp, Event.OperationFailed, Snapshot.State.Error); |
| stateMachine.addTransition(Snapshot.State.BackedUp, Event.DestroyRequested, Snapshot.State.Destroying); |
| stateMachine.addTransition(Snapshot.State.BackedUp, Event.CopyingRequested, Snapshot.State.Copying); |
| stateMachine.addTransition(Snapshot.State.BackedUp, Event.BackupToSecondary, Snapshot.State.BackingUp); |
| stateMachine.addTransition(Snapshot.State.Copying, Event.OperationSucceeded, Snapshot.State.BackedUp); |
| stateMachine.addTransition(Snapshot.State.Copying, Event.OperationFailed, Snapshot.State.BackedUp); |
| stateMachine.addTransition(Snapshot.State.Destroying, Event.OperationSucceeded, Snapshot.State.Destroyed); |
| stateMachine.addTransition(Snapshot.State.Destroying, Event.OperationFailed, State.BackedUp); |
| stateMachine.addTransition(Snapshot.State.Destroying, Event.DestroyRequested, Snapshot.State.Destroying); |
| |
| stateMachine.registerListener(new SnapshotStateListener()); |
| } |
| |
| @Override |
| public void processEvent(SnapshotVO snapshot, Event event) throws NoTransitionException { |
| stateMachine.transitTo(snapshot, event, null, snapshotDao); |
| } |
| } |