| /** |
| * 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.yarn.ams; |
| |
| import org.apache.hadoop.yarn.api.protocolrecords.AllocateRequest; |
| import org.apache.hadoop.yarn.api.protocolrecords.AllocateResponse; |
| import org.apache.hadoop.yarn.api.protocolrecords |
| .FinishApplicationMasterRequest; |
| import org.apache.hadoop.yarn.api.protocolrecords.FinishApplicationMasterResponse; |
| import org.apache.hadoop.yarn.api.protocolrecords |
| .RegisterApplicationMasterRequest; |
| import org.apache.hadoop.yarn.api.protocolrecords.RegisterApplicationMasterResponse; |
| import org.apache.hadoop.yarn.api.records.ApplicationAttemptId; |
| import org.apache.hadoop.yarn.exceptions.YarnException; |
| |
| import java.io.IOException; |
| |
| /** |
| * Interface to abstract out the the actual processing logic of the |
| * Application Master Service. |
| */ |
| public interface ApplicationMasterServiceProcessor { |
| |
| /** |
| * Initialize with and ApplicationMasterService Context as well as the |
| * next processor in the chain. |
| * @param amsContext AMSContext. |
| * @param nextProcessor next ApplicationMasterServiceProcessor |
| */ |
| void init(ApplicationMasterServiceContext amsContext, |
| ApplicationMasterServiceProcessor nextProcessor); |
| |
| /** |
| * Register AM attempt. |
| * @param applicationAttemptId applicationAttemptId. |
| * @param request Register Request. |
| * @param response Register Response. |
| * @throws IOException IOException. |
| * @throws YarnException in critical situation where invalid |
| * profiles/resources are added. |
| */ |
| void registerApplicationMaster(ApplicationAttemptId applicationAttemptId, |
| RegisterApplicationMasterRequest request, |
| RegisterApplicationMasterResponse response) |
| throws IOException, YarnException; |
| |
| /** |
| * Allocate call. |
| * @param appAttemptId appAttemptId. |
| * @param request Allocate Request. |
| * @param response Allocate Response. |
| * @throws YarnException YarnException. |
| */ |
| void allocate(ApplicationAttemptId appAttemptId, |
| AllocateRequest request, AllocateResponse response) throws YarnException; |
| |
| /** |
| * Finish AM. |
| * @param applicationAttemptId applicationAttemptId. |
| * @param request Finish AM Request. |
| * @param response Finish AM Response. |
| */ |
| void finishApplicationMaster( |
| ApplicationAttemptId applicationAttemptId, |
| FinishApplicationMasterRequest request, |
| FinishApplicationMasterResponse response); |
| } |