-
Notifications
You must be signed in to change notification settings - Fork 1
/
codec.go
43 lines (35 loc) · 1.32 KB
/
codec.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
// Copyright The OpenTelemetry Authors
//
// 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 enmsAnalyticsExporter // import "github.com/open-telemetry/opentelemetry-collector-contrib/exporter/fileexporter"
import "github.com/klauspost/compress/zstd"
// compressFunc defines how to compress encoded telemetry data.
type compressFunc func(src []byte) []byte
var encoder, _ = zstd.NewWriter(nil)
var encoders = map[string]compressFunc{
compressionZSTD: zstdCompress,
}
func buildCompressor(compression string) compressFunc {
if compression == "" {
return noneCompress
}
return encoders[compression]
}
// zstdCompress compress a buffer with zstd
func zstdCompress(src []byte) []byte {
return encoder.EncodeAll(src, make([]byte, 0, len(src)))
}
// noneCompress return src
func noneCompress(src []byte) []byte {
return src
}