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zstd_strategy.go
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/
zstd_strategy.go
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// Unless explicitly stated otherwise all files in this repository are licensed
// under the Apache License Version 2.0.
// This product includes software developed at Datadog (https://www.datadoghq.com/).
// Copyright 2016-present Datadog, Inc.
// Package strategy provides a set of functions for compressing with zlib / zstd
package strategy
import (
"bytes"
"github.com/DataDog/zstd"
"github.com/DataDog/datadog-agent/comp/serializer/compression"
)
// ZstdStrategy is the strategy for when serializer_compressor_kind is zstd
type ZstdStrategy struct {
}
// NewZstdStrategy returns a new ZstdStrategy
func NewZstdStrategy() *ZstdStrategy {
return &ZstdStrategy{}
}
// Compress will compress the data with zstd
func (s *ZstdStrategy) Compress(src []byte) ([]byte, error) {
return zstd.Compress(nil, src)
}
// Decompress will decompress the data with zstd
func (s *ZstdStrategy) Decompress(src []byte) ([]byte, error) {
return zstd.Decompress(nil, src)
}
// CompressBound returns the worst case size needed for a destination buffer when using zstd
func (s *ZstdStrategy) CompressBound(sourceLen int) int {
return zstd.CompressBound(sourceLen)
}
// ContentEncoding returns the content encoding value for zstd
func (s *ZstdStrategy) ContentEncoding() string {
return compression.ZstdEncoding
}
// NewStreamCompressor returns a new zstd Writer
func (s *ZstdStrategy) NewStreamCompressor(output *bytes.Buffer) compression.StreamCompressor {
return zstd.NewWriter(output)
}