| /** |
| * 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.hdfs.server.federation.store.impl; |
| |
| import java.io.IOException; |
| import java.util.List; |
| |
| import org.apache.hadoop.classification.InterfaceAudience; |
| import org.apache.hadoop.classification.InterfaceStability; |
| import org.apache.hadoop.hdfs.server.federation.store.RouterStore; |
| import org.apache.hadoop.hdfs.server.federation.store.driver.StateStoreDriver; |
| import org.apache.hadoop.hdfs.server.federation.store.protocol.GetRouterRegistrationRequest; |
| import org.apache.hadoop.hdfs.server.federation.store.protocol.GetRouterRegistrationResponse; |
| import org.apache.hadoop.hdfs.server.federation.store.protocol.GetRouterRegistrationsRequest; |
| import org.apache.hadoop.hdfs.server.federation.store.protocol.GetRouterRegistrationsResponse; |
| import org.apache.hadoop.hdfs.server.federation.store.protocol.RouterHeartbeatRequest; |
| import org.apache.hadoop.hdfs.server.federation.store.protocol.RouterHeartbeatResponse; |
| import org.apache.hadoop.hdfs.server.federation.store.records.Query; |
| import org.apache.hadoop.hdfs.server.federation.store.records.QueryResult; |
| import org.apache.hadoop.hdfs.server.federation.store.records.RouterState; |
| |
| /** |
| * Implementation of the {@link RouterStore} state store API. |
| */ |
| @InterfaceAudience.Private |
| @InterfaceStability.Evolving |
| public class RouterStoreImpl extends RouterStore { |
| |
| public RouterStoreImpl(StateStoreDriver driver) { |
| super(driver); |
| } |
| |
| @Override |
| public GetRouterRegistrationResponse getRouterRegistration( |
| GetRouterRegistrationRequest request) throws IOException { |
| |
| final RouterState partial = RouterState.newInstance(); |
| partial.setAddress(request.getRouterId()); |
| final Query<RouterState> query = new Query<RouterState>(partial); |
| RouterState record = getDriver().get(getRecordClass(), query); |
| if (record != null) { |
| overrideExpiredRecord(record); |
| } |
| GetRouterRegistrationResponse response = |
| GetRouterRegistrationResponse.newInstance(); |
| response.setRouter(record); |
| return response; |
| } |
| |
| @Override |
| public GetRouterRegistrationsResponse getRouterRegistrations( |
| GetRouterRegistrationsRequest request) throws IOException { |
| |
| // Get all values from the cache |
| QueryResult<RouterState> recordsAndTimeStamp = |
| getCachedRecordsAndTimeStamp(); |
| List<RouterState> records = recordsAndTimeStamp.getRecords(); |
| long timestamp = recordsAndTimeStamp.getTimestamp(); |
| |
| // Generate response |
| GetRouterRegistrationsResponse response = |
| GetRouterRegistrationsResponse.newInstance(); |
| response.setRouters(records); |
| response.setTimestamp(timestamp); |
| return response; |
| } |
| |
| @Override |
| public RouterHeartbeatResponse routerHeartbeat(RouterHeartbeatRequest request) |
| throws IOException { |
| |
| RouterState record = request.getRouter(); |
| boolean status = getDriver().put(record, true, false); |
| RouterHeartbeatResponse response = |
| RouterHeartbeatResponse.newInstance(status); |
| return response; |
| } |
| } |