| /** |
| * 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.hadoop.ozone.protocol.commands; |
| |
| import com.google.protobuf.GeneratedMessage; |
| import org.apache.hadoop.hdds.HddsIdFactory; |
| import org.apache.hadoop.hdds.protocol.proto |
| .StorageContainerDatanodeProtocolProtos.SCMCommandProto; |
| import org.apache.hadoop.hdds.server.events.IdentifiableEventPayload; |
| |
| /** |
| * A class that acts as the base class to convert between Java and SCM |
| * commands in protobuf format. |
| * @param <T> |
| */ |
| public abstract class SCMCommand<T extends GeneratedMessage> implements |
| IdentifiableEventPayload { |
| private long id; |
| |
| SCMCommand() { |
| this.id = HddsIdFactory.getLongId(); |
| } |
| |
| SCMCommand(long id) { |
| this.id = id; |
| } |
| /** |
| * Returns the type of this command. |
| * @return Type |
| */ |
| public abstract SCMCommandProto.Type getType(); |
| |
| /** |
| * Gets the protobuf message of this object. |
| * @return A protobuf message. |
| */ |
| public abstract T getProto(); |
| |
| /** |
| * Gets the commandId of this object. |
| * @return uuid. |
| */ |
| public long getId() { |
| return id; |
| } |
| |
| } |