| /** |
| * 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. |
| */ |
| |
| #ifndef _HDFS_LIBHDFS3_CLIENT_PACKETHEADER_H_ |
| #define _HDFS_LIBHDFS3_CLIENT_PACKETHEADER_H_ |
| |
| #include "datatransfer.pb.h" |
| |
| using hadoop::hdfs::PacketHeaderProto; |
| |
| namespace hdfs { |
| namespace internal { |
| |
| class PacketHeader { |
| public: |
| PacketHeader(); |
| PacketHeader(int packetLen, int64_t offsetInBlock, int64_t seqno, |
| bool lastPacketInBlock, int dataLen); |
| bool isLastPacketInBlock(); |
| bool sanityCheck(int64_t lastSeqNo); |
| int getDataLen(); |
| int getPacketLen(); |
| int64_t getOffsetInBlock(); |
| int64_t getSeqno(); |
| void readFields(const char * buf, size_t size); |
| /** |
| * Write the header into the buffer. |
| * This requires that PKT_HEADER_LEN bytes are available. |
| */ |
| void writeInBuffer(char * buf, size_t size); |
| |
| public: |
| static int GetPkgHeaderSize(); |
| static int CalcPkgHeaderSize(); |
| |
| private: |
| static int PkgHeaderSize; |
| private: |
| int32_t packetLen; |
| PacketHeaderProto proto; |
| }; |
| |
| } |
| } |
| |
| #endif /* _HDFS_LIBHDFS3_CLIENT_PACKETHEADER_H_ */ |