| /** |
| * 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.server.resourcemanager.recovery; |
| |
| import org.apache.hadoop.thirdparty.protobuf.InvalidProtocolBufferException; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| import org.apache.hadoop.classification.InterfaceAudience.Private; |
| import org.apache.hadoop.classification.InterfaceStability.Unstable; |
| import org.apache.hadoop.yarn.security.client.RMDelegationTokenIdentifier; |
| import org.apache.hadoop.yarn.security.client.YARNDelegationTokenIdentifier; |
| import org.apache.hadoop.yarn.server.resourcemanager.recovery.records.RMDelegationTokenIdentifierData; |
| |
| import java.io.DataInputStream; |
| import java.io.IOException; |
| |
| /** |
| * Utility methods for {@link RMStateStore} and subclasses. |
| */ |
| @Private |
| @Unstable |
| public class RMStateStoreUtils { |
| |
| public static final Logger LOG = |
| LoggerFactory.getLogger(RMStateStoreUtils.class); |
| |
| /** |
| * Returns the RM Delegation Token data from the {@link DataInputStream} as a |
| * {@link RMDelegationTokenIdentifierData}. It can handle both the current |
| * and old (non-protobuf) formats. |
| * |
| * @param fsIn The {@link DataInputStream} containing RM Delegation Token data |
| * @return An {@link RMDelegationTokenIdentifierData} containing the read in |
| * RM Delegation Token |
| */ |
| public static RMDelegationTokenIdentifierData |
| readRMDelegationTokenIdentifierData(DataInputStream fsIn) |
| throws IOException { |
| RMDelegationTokenIdentifierData identifierData = |
| new RMDelegationTokenIdentifierData(); |
| try { |
| identifierData.readFields(fsIn); |
| } catch (InvalidProtocolBufferException e) { |
| LOG.warn("Recovering old formatted token"); |
| fsIn.reset(); |
| YARNDelegationTokenIdentifier identifier = |
| new RMDelegationTokenIdentifier(); |
| identifier.readFieldsInOldFormat(fsIn); |
| identifierData.setIdentifier(identifier); |
| identifierData.setRenewDate(fsIn.readLong()); |
| } |
| return identifierData; |
| } |
| } |