| /** |
| * 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 LIB_COMPRESSIONCODEC_H_ |
| #define LIB_COMPRESSIONCODEC_H_ |
| |
| #include <pulsar/Producer.h> |
| |
| #include <map> |
| |
| #include "SharedBuffer.h" |
| |
| using namespace pulsar; |
| namespace pulsar { |
| |
| class CompressionCodec; |
| class CompressionCodecNone; |
| class CompressionCodecLZ4; |
| class CompressionCodecZLib; |
| class CompressionCodecZstd; |
| class CompressionCodecSnappy; |
| |
| class PULSAR_PUBLIC CompressionCodecProvider { |
| public: |
| static CompressionCodec& getCodec(CompressionType compressionType); |
| |
| private: |
| static CompressionCodecNone compressionCodecNone_; |
| static CompressionCodecLZ4 compressionCodecLZ4_; |
| static CompressionCodecZLib compressionCodecZLib_; |
| static CompressionCodecZstd compressionCodecZstd_; |
| static CompressionCodecSnappy compressionCodecSnappy_; |
| }; |
| |
| class PULSAR_PUBLIC CompressionCodec { |
| public: |
| virtual ~CompressionCodec() {} |
| |
| /** |
| * Compress a buffer |
| * |
| * @param raw |
| * a buffer with the uncompressed content. The reader/writer indexes will not be modified |
| * @return a buffer with the compressed content. |
| */ |
| virtual SharedBuffer encode(const SharedBuffer& raw) = 0; |
| |
| /** |
| * Decompress a buffer. |
| * |
| * The buffer needs to have been compressed with the matching Encoder. |
| * |
| * @param encoded |
| * the compressed content |
| * @param uncompressedSize |
| * the size of the original content |
| * @param decoded |
| * were the result will be passed |
| * @return true if the buffer was decompressed, false otherwise |
| */ |
| virtual bool decode(const SharedBuffer& encoded, uint32_t uncompressedSize, SharedBuffer& decoded) = 0; |
| }; |
| |
| class PULSAR_PUBLIC CompressionCodecNone : public CompressionCodec { |
| public: |
| SharedBuffer encode(const SharedBuffer& raw); |
| |
| bool decode(const SharedBuffer& encoded, uint32_t uncompressedSize, SharedBuffer& decoded); |
| }; |
| } // namespace pulsar |
| |
| #endif /* LIB_COMPRESSIONCODEC_H_ */ |