Java tutorial
/** * 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.client.api.impl; import java.io.DataInput; import java.io.DataInputStream; import java.io.DataOutput; import java.io.IOException; import org.apache.commons.io.IOUtils; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.apache.hadoop.io.Text; import org.apache.hadoop.security.UserGroupInformation; import org.apache.hadoop.yarn.api.records.ApplicationAttemptId; import org.apache.hadoop.yarn.api.records.NodeId; import org.apache.hadoop.yarn.api.records.impl.pb.ApplicationAttemptIdPBImpl; import org.apache.hadoop.yarn.api.records.impl.pb.NodeIdPBImpl; import org.apache.hadoop.yarn.proto.YarnSecurityTestAMRMTokenProtos.AMRMTokenIdentifierForTestProto; import org.apache.hadoop.yarn.security.AMRMTokenIdentifier; import com.google.protobuf.TextFormat; public class AMRMTokenIdentifierForTest extends AMRMTokenIdentifier { private static Log LOG = LogFactory.getLog(AMRMTokenIdentifierForTest.class); public static final Text KIND = new Text("YARN_AM_RM_TOKEN"); private AMRMTokenIdentifierForTestProto proto; private AMRMTokenIdentifierForTestProto.Builder builder; public AMRMTokenIdentifierForTest() { builder = AMRMTokenIdentifierForTestProto.newBuilder(); } public AMRMTokenIdentifierForTest(AMRMTokenIdentifierForTestProto proto) { this.proto = proto; } public AMRMTokenIdentifierForTest(AMRMTokenIdentifier tokenIdentifier, String message) { builder = AMRMTokenIdentifierForTestProto.newBuilder(); builder.setAppAttemptId(tokenIdentifier.getProto().getAppAttemptId()); builder.setKeyId(tokenIdentifier.getKeyId()); builder.setMessage(message); proto = builder.build(); builder = null; } @Override public void write(DataOutput out) throws IOException { out.write(proto.toByteArray()); } @Override public void readFields(DataInput in) throws IOException { DataInputStream dis = (DataInputStream) in; byte[] buffer = IOUtils.toByteArray(dis); proto = AMRMTokenIdentifierForTestProto.parseFrom(buffer); } @Override public Text getKind() { return KIND; } public String getMessage() { return proto.getMessage(); } public void setMessage(String message) { builder.setMessage(message); } public void build() { proto = builder.build(); builder = null; } public ApplicationAttemptId getApplicationAttemptId() { return new ApplicationAttemptIdPBImpl(proto.getAppAttemptId()); } public int getKeyId() { return proto.getKeyId(); } public AMRMTokenIdentifierForTestProto getNewProto() { return this.proto; } @Override public int hashCode() { return this.proto.hashCode(); } @Override public boolean equals(Object other) { if (other == null) return false; if (other.getClass().isAssignableFrom(this.getClass())) { return this.getNewProto().equals(this.getClass().cast(other).getNewProto()); } return false; } @Override public String toString() { return TextFormat.shortDebugString(this.proto); } }