github.com/matrixorigin/matrixone@v1.2.0/pkg/common/morpc/compress.go (about)

     1  // Copyright 2022 Matrix Origin
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //      http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package morpc
    16  
    17  import (
    18  	"github.com/pierrec/lz4/v4"
    19  )
    20  
    21  func compress(src, dst []byte) ([]byte, error) {
    22  	var c lz4.Compressor
    23  	n, err := c.CompressBlock(src, dst)
    24  	if err != nil {
    25  		return nil, err
    26  	}
    27  	if n == 0 {
    28  		panic("BUG")
    29  	}
    30  	return dst[:n], nil
    31  }
    32  
    33  func uncompress(src, dst []byte) ([]byte, error) {
    34  	n, err := lz4.UncompressBlock(src, dst)
    35  	if err != nil {
    36  		return nil, err
    37  	}
    38  	return dst[:n], nil
    39  }