| /** |
| * 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.protocol.datatransfer; |
| |
| import java.io.IOException; |
| |
| import org.apache.hadoop.classification.InterfaceAudience; |
| import org.apache.hadoop.classification.InterfaceStability; |
| import org.apache.hadoop.hdfs.protocol.ExtendedBlock; |
| import org.apache.hadoop.hdfs.protocol.proto.DataTransferProtos.BaseHeaderProto; |
| import org.apache.hadoop.hdfs.protocol.proto.DataTransferProtos.BlockOpResponseProto; |
| import org.apache.hadoop.hdfs.protocol.proto.DataTransferProtos.Status; |
| import org.apache.hadoop.hdfs.protocol.proto.DataTransferProtos.ChecksumProto; |
| import org.apache.hadoop.hdfs.protocol.proto.DataTransferProtos.ClientOperationHeaderProto; |
| import org.apache.hadoop.hdfs.protocol.proto.DataTransferProtos.OpWriteBlockProto; |
| import org.apache.hadoop.hdfs.protocol.proto.DataTransferProtos.DataTransferTraceInfoProto; |
| import org.apache.hadoop.hdfs.protocol.proto.HdfsProtos.ChecksumTypeProto; |
| import org.apache.hadoop.hdfs.protocolPB.PBHelperClient; |
| import org.apache.hadoop.hdfs.security.token.block.BlockTokenIdentifier; |
| import org.apache.hadoop.hdfs.security.token.block.InvalidBlockTokenException; |
| import org.apache.hadoop.security.token.Token; |
| import org.apache.hadoop.util.DataChecksum; |
| import org.apache.htrace.core.SpanId; |
| import org.apache.htrace.core.Tracer; |
| |
| /** |
| * Static utilities for dealing with the protocol buffers used by the |
| * Data Transfer Protocol. |
| */ |
| @InterfaceAudience.Private |
| @InterfaceStability.Evolving |
| public abstract class DataTransferProtoUtil { |
| static BlockConstructionStage fromProto( |
| OpWriteBlockProto.BlockConstructionStage stage) { |
| return BlockConstructionStage.valueOf(stage.name()); |
| } |
| |
| static OpWriteBlockProto.BlockConstructionStage toProto( |
| BlockConstructionStage stage) { |
| return OpWriteBlockProto.BlockConstructionStage.valueOf(stage.name()); |
| } |
| |
| public static ChecksumProto toProto(DataChecksum checksum) { |
| ChecksumTypeProto type = PBHelperClient.convert(checksum.getChecksumType()); |
| // ChecksumType#valueOf never returns null |
| return ChecksumProto.newBuilder() |
| .setBytesPerChecksum(checksum.getBytesPerChecksum()) |
| .setType(type) |
| .build(); |
| } |
| |
| public static DataChecksum fromProto(ChecksumProto proto) { |
| if (proto == null) { |
| return null; |
| } |
| |
| int bytesPerChecksum = proto.getBytesPerChecksum(); |
| DataChecksum.Type type = PBHelperClient.convert(proto.getType()); |
| return DataChecksum.newDataChecksum(type, bytesPerChecksum); |
| } |
| |
| static ClientOperationHeaderProto buildClientHeader(ExtendedBlock blk, |
| String client, Token<BlockTokenIdentifier> blockToken) { |
| return ClientOperationHeaderProto.newBuilder() |
| .setBaseHeader(buildBaseHeader(blk, blockToken)) |
| .setClientName(client) |
| .build(); |
| } |
| |
| static BaseHeaderProto buildBaseHeader(ExtendedBlock blk, |
| Token<BlockTokenIdentifier> blockToken) { |
| BaseHeaderProto.Builder builder = BaseHeaderProto.newBuilder() |
| .setBlock(PBHelperClient.convert(blk)) |
| .setToken(PBHelperClient.convert(blockToken)); |
| SpanId spanId = Tracer.getCurrentSpanId(); |
| if (spanId.isValid()) { |
| builder.setTraceInfo(DataTransferTraceInfoProto.newBuilder() |
| .setTraceId(spanId.getHigh()) |
| .setParentId(spanId.getLow())); |
| } |
| return builder.build(); |
| } |
| |
| public static SpanId fromProto(DataTransferTraceInfoProto proto) { |
| if ((proto != null) && proto.hasTraceId() && |
| proto.hasParentId()) { |
| return new SpanId(proto.getTraceId(), proto.getParentId()); |
| } |
| return null; |
| } |
| |
| public static void checkBlockOpStatus( |
| BlockOpResponseProto response, |
| String logInfo) throws IOException { |
| if (response.getStatus() != Status.SUCCESS) { |
| if (response.getStatus() == Status.ERROR_ACCESS_TOKEN) { |
| throw new InvalidBlockTokenException( |
| "Got access token error" |
| + ", status message " + response.getMessage() |
| + ", " + logInfo |
| ); |
| } else { |
| throw new IOException( |
| "Got error" |
| + ", status=" + response.getStatus().name() |
| + ", status message " + response.getMessage() |
| + ", " + logInfo |
| ); |
| } |
| } |
| } |
| } |