| /* |
| * 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.helper; |
| |
| import java.util.Collection; |
| import java.util.List; |
| import java.util.Map; |
| |
| import javax.inject.Inject; |
| |
| import org.apache.cloudstack.engine.subsystem.api.storage.DataMotionStrategy; |
| import org.apache.cloudstack.engine.subsystem.api.storage.DataObject; |
| import org.apache.cloudstack.engine.subsystem.api.storage.DataStore; |
| import org.apache.cloudstack.engine.subsystem.api.storage.SnapshotStrategy; |
| import org.apache.cloudstack.engine.subsystem.api.storage.SnapshotStrategy.SnapshotOperation; |
| import org.apache.cloudstack.engine.subsystem.api.storage.StorageStrategyFactory; |
| import org.apache.cloudstack.engine.subsystem.api.storage.StrategyPriority; |
| import org.apache.cloudstack.engine.subsystem.api.storage.VMSnapshotStrategy; |
| import org.apache.cloudstack.engine.subsystem.api.storage.VolumeInfo; |
| |
| import com.cloud.host.Host; |
| import com.cloud.storage.Snapshot; |
| import com.cloud.vm.snapshot.VMSnapshot; |
| |
| public class StorageStrategyFactoryImpl implements StorageStrategyFactory { |
| |
| List<SnapshotStrategy> snapshotStrategies; |
| List<DataMotionStrategy> dataMotionStrategies; |
| List<VMSnapshotStrategy> vmSnapshotStrategies; |
| |
| @Override |
| public DataMotionStrategy getDataMotionStrategy(final DataObject srcData, final DataObject destData) { |
| return bestMatch(dataMotionStrategies, new CanHandle<DataMotionStrategy>() { |
| @Override |
| public StrategyPriority canHandle(DataMotionStrategy strategy) { |
| return strategy.canHandle(srcData, destData); |
| } |
| }); |
| } |
| |
| @Override |
| public DataMotionStrategy getDataMotionStrategy(final Map<VolumeInfo, DataStore> volumeMap, final Host srcHost, final Host destHost) { |
| return bestMatch(dataMotionStrategies, new CanHandle<DataMotionStrategy>() { |
| @Override |
| public StrategyPriority canHandle(DataMotionStrategy strategy) { |
| return strategy.canHandle(volumeMap, srcHost, destHost); |
| } |
| }); |
| } |
| |
| @Override |
| public SnapshotStrategy getSnapshotStrategy(final Snapshot snapshot, final SnapshotOperation op) { |
| return bestMatch(snapshotStrategies, new CanHandle<SnapshotStrategy>() { |
| @Override |
| public StrategyPriority canHandle(SnapshotStrategy strategy) { |
| return strategy.canHandle(snapshot, op); |
| } |
| }); |
| } |
| |
| @Override |
| public VMSnapshotStrategy getVmSnapshotStrategy(final VMSnapshot vmSnapshot) { |
| return bestMatch(vmSnapshotStrategies, new CanHandle<VMSnapshotStrategy>() { |
| @Override |
| public StrategyPriority canHandle(VMSnapshotStrategy strategy) { |
| return strategy.canHandle(vmSnapshot); |
| } |
| }); |
| } |
| |
| @Override |
| public VMSnapshotStrategy getVmSnapshotStrategy(final Long vmId, Long rootPoolId, boolean snapshotMemory) { |
| return bestMatch(vmSnapshotStrategies, new CanHandle<VMSnapshotStrategy>() { |
| @Override |
| public StrategyPriority canHandle(VMSnapshotStrategy strategy) { |
| return strategy.canHandle(vmId, rootPoolId, snapshotMemory); |
| } |
| }); |
| } |
| |
| private static <T> T bestMatch(Collection<T> collection, final CanHandle<T> canHandle) { |
| if (collection.size() == 0) |
| return null; |
| |
| StrategyPriority highestPriority = StrategyPriority.CANT_HANDLE; |
| |
| T strategyToUse = null; |
| for (T strategy : collection) { |
| StrategyPriority priority = canHandle.canHandle(strategy); |
| if (priority.ordinal() > highestPriority.ordinal()) { |
| highestPriority = priority; |
| strategyToUse = strategy; |
| } |
| } |
| |
| return strategyToUse; |
| } |
| |
| private static interface CanHandle<T> { |
| StrategyPriority canHandle(T strategy); |
| } |
| |
| public List<SnapshotStrategy> getSnapshotStrategies() { |
| return snapshotStrategies; |
| } |
| |
| @Inject |
| public void setSnapshotStrategies(List<SnapshotStrategy> snapshotStrategies) { |
| this.snapshotStrategies = snapshotStrategies; |
| } |
| |
| public List<DataMotionStrategy> getDataMotionStrategies() { |
| return dataMotionStrategies; |
| } |
| |
| @Inject |
| public void setDataMotionStrategies(List<DataMotionStrategy> dataMotionStrategies) { |
| this.dataMotionStrategies = dataMotionStrategies; |
| } |
| |
| @Inject |
| public void setVmSnapshotStrategies(List<VMSnapshotStrategy> vmSnapshotStrategies) { |
| this.vmSnapshotStrategies = vmSnapshotStrategies; |
| } |
| |
| public List<VMSnapshotStrategy> getVmSnapshotStrategies() { |
| return vmSnapshotStrategies; |
| } |
| |
| } |