/
zstd.go
55 lines (47 loc) · 1.31 KB
/
zstd.go
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/*
* Copyright (c) 2024 Yunshan Networks
*
* 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.
*/
package common
import (
"sync"
"github.com/klauspost/compress/zstd"
"github.com/op/go-logging"
)
var (
log = logging.MustGetLogger("profile.common")
decoder *zstd.Decoder
encoder *zstd.Encoder
encoderOnce, decoderOnce sync.Once
)
func ZstdDecompress(dst, src []byte) ([]byte, error) {
decoderOnce.Do(func() {
var err error
decoder, err = zstd.NewReader(nil)
if err != nil {
log.Error(err)
}
})
return decoder.DecodeAll(src, dst[:0])
}
func ZstdCompress(dst, src []byte, l zstd.EncoderLevel) ([]byte, error) {
encoderOnce.Do(func() {
var err error
encoder, err = zstd.NewWriter(nil, zstd.WithEncoderLevel(l))
if err != nil {
log.Error(err)
}
})
return encoder.EncodeAll(src, dst[:0]), nil
}