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add compression v2 API and lz4_frame/lz4_raw/lz4_hadoop codec
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,29 @@ | ||
| # Copyright (c) Facebook, Inc. and its affiliates. | ||
| # | ||
| # Licensed 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. | ||
|
|
||
| if(${VELOX_BUILD_TESTING}) | ||
| add_subdirectory(tests) | ||
| endif() | ||
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|
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| add_library(velox_common_compression_v2 | ||
| Compression.cpp HadoopCompressionFormat.cpp Lz4Compression.cpp) | ||
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| target_link_libraries( | ||
| velox_common_compression_v2 | ||
| velox_common_base | ||
| Folly::folly | ||
| Snappy::snappy | ||
| zstd::zstd | ||
| ZLIB::ZLIB | ||
| lz4::lz4) |
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| Original file line number | Diff line number | Diff line change |
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| /* | ||
| * Copyright (c) Facebook, Inc. and its affiliates. | ||
| * | ||
| * Licensed 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. | ||
| */ | ||
|
|
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| // Adapted from Apache Arrow. | ||
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| #include "velox/common/compression/v2/Compression.h" | ||
| #include <memory> | ||
| #include <string> | ||
| #include <utility> | ||
| #include "velox/common/base/Exceptions.h" | ||
| #include "velox/common/compression/v2/Lz4Compression.h" | ||
|
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| namespace facebook::velox::common { | ||
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| namespace { | ||
| void checkSupportsCompressionLevel(CompressionKind kind) { | ||
| VELOX_USER_CHECK( | ||
| Codec::supportsCompressionLevel(kind), | ||
| "Codec '" + compressionKindToString(kind) + | ||
| "' doesn't support setting a compression level."); | ||
| } | ||
| } // namespace | ||
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| int32_t Codec::useDefaultCompressionLevel() { | ||
| return kUseDefaultCompressionLevel; | ||
| } | ||
|
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| void Codec::init() {} | ||
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| bool Codec::supportsGetUncompressedLength(CompressionKind kind) { | ||
| switch (kind) { | ||
| default: | ||
| return false; | ||
| } | ||
| } | ||
|
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| bool Codec::supportsCompressionLevel(CompressionKind kind) { | ||
| switch (kind) { | ||
| case CompressionKind::CompressionKind_LZ4: | ||
| case CompressionKind::CompressionKind_LZ4RAW: | ||
| return true; | ||
| default: | ||
| return false; | ||
| } | ||
| } | ||
|
|
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| bool Codec::supportsStreamingCompression(CompressionKind kind) { | ||
| switch (kind) { | ||
| case CompressionKind::CompressionKind_LZ4: | ||
| case CompressionKind::CompressionKind_GZIP: | ||
| case CompressionKind::CompressionKind_ZLIB: | ||
| return true; | ||
| default: | ||
| return false; | ||
| } | ||
| } | ||
|
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| int32_t Codec::maximumCompressionLevel(CompressionKind kind) { | ||
| checkSupportsCompressionLevel(kind); | ||
| auto codec = Codec::create(kind); | ||
| return codec->maximumCompressionLevel(); | ||
| } | ||
|
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| int32_t Codec::minimumCompressionLevel(CompressionKind kind) { | ||
| checkSupportsCompressionLevel(kind); | ||
| auto codec = Codec::create(kind); | ||
| return codec->minimumCompressionLevel(); | ||
| } | ||
|
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| int32_t Codec::defaultCompressionLevel(CompressionKind kind) { | ||
| checkSupportsCompressionLevel(kind); | ||
| auto codec = Codec::create(kind); | ||
| return codec->defaultCompressionLevel(); | ||
| } | ||
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| std::unique_ptr<Codec> Codec::create( | ||
| CompressionKind kind, | ||
| const CodecOptions& codecOptions) { | ||
| if (!isAvailable(kind)) { | ||
| auto name = compressionKindToString(kind); | ||
| if (folly::StringPiece({name}).startsWith("unknown")) { | ||
| VELOX_UNSUPPORTED("Unrecognized codec '{}'", name); | ||
| } | ||
| VELOX_UNSUPPORTED("Support for codec '{}' not implemented.", name); | ||
| } | ||
|
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| auto compressionLevel = codecOptions.compressionLevel; | ||
| if (compressionLevel != kUseDefaultCompressionLevel) { | ||
| checkSupportsCompressionLevel(kind); | ||
| } | ||
|
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| std::unique_ptr<Codec> codec; | ||
| switch (kind) { | ||
| case CompressionKind::CompressionKind_LZ4: | ||
| codec = makeLz4FrameCodec(compressionLevel); | ||
| break; | ||
| case CompressionKind::CompressionKind_LZ4RAW: | ||
| codec = makeLz4RawCodec(compressionLevel); | ||
| break; | ||
| case CompressionKind::CompressionKind_LZ4HADOOP: | ||
| codec = makeLz4HadoopRawCodec(); | ||
| break; | ||
| default: | ||
| break; | ||
| } | ||
|
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| if (codec == nullptr) { | ||
| VELOX_UNSUPPORTED("LZO codec not implemented"); | ||
| } | ||
|
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| codec->init(); | ||
|
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| return codec; | ||
| } | ||
|
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| // use compression level to create Codec | ||
| std::unique_ptr<Codec> Codec::create( | ||
| CompressionKind kind, | ||
| int32_t compressionLevel) { | ||
| return create(kind, CodecOptions{compressionLevel}); | ||
| } | ||
|
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| bool Codec::isAvailable(CompressionKind kind) { | ||
| switch (kind) { | ||
| case CompressionKind::CompressionKind_NONE: | ||
| case CompressionKind::CompressionKind_LZ4: | ||
| case CompressionKind::CompressionKind_LZ4RAW: | ||
| case CompressionKind::CompressionKind_LZ4HADOOP: | ||
| return true; | ||
| case CompressionKind::CompressionKind_SNAPPY: | ||
| case CompressionKind::CompressionKind_GZIP: | ||
| case CompressionKind::CompressionKind_ZLIB: | ||
| case CompressionKind::CompressionKind_ZSTD: | ||
| case CompressionKind::CompressionKind_LZO: | ||
| default: | ||
| return false; | ||
| } | ||
| } | ||
|
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| std::optional<uint64_t> Codec::getUncompressedLength( | ||
| uint64_t inputLength, | ||
| const uint8_t* input, | ||
| std::optional<uint64_t> uncompressedLength) const { | ||
| if (inputLength == 0) { | ||
| if (uncompressedLength.value_or(0) != 0) { | ||
| VELOX_USER_CHECK_EQ( | ||
| uncompressedLength.value_or(0), | ||
| 0, | ||
| "Invalid uncompressed length: {}.", | ||
| *uncompressedLength); | ||
| } | ||
| return 0; | ||
| } | ||
| auto actualLength = | ||
| doGetUncompressedLength(inputLength, input, uncompressedLength); | ||
| if (actualLength) { | ||
| if (uncompressedLength) { | ||
| VELOX_USER_CHECK_EQ( | ||
| *actualLength, | ||
| *uncompressedLength, | ||
| "Invalid uncompressed length: {}.", | ||
| *uncompressedLength); | ||
| } | ||
| return actualLength; | ||
| } | ||
| return uncompressedLength; | ||
| } | ||
|
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| std::optional<uint64_t> Codec::doGetUncompressedLength( | ||
| uint64_t inputLength, | ||
| const uint8_t* input, | ||
| std::optional<uint64_t> uncompressedLength) const { | ||
| return uncompressedLength; | ||
| } | ||
|
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| uint64_t Codec::compressPartial( | ||
| uint64_t inputLength, | ||
| const uint8_t* input, | ||
| uint64_t outputLength, | ||
| uint8_t* output) { | ||
| VELOX_UNSUPPORTED("'{}' doesn't support partial compression", name()); | ||
| } | ||
| } // namespace facebook::velox::common |
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