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
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
|
// Copyright 2018 ThousandEyes Inc.
//
// 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 log
import (
"io"
"github.com/go-kit/kit/log"
"github.com/go-kit/kit/log/level"
)
// Logger struct holds a log.Logger plus functions required for logging
// with different levels. They functions are syntactic sugar to avoid
// having to import "github.com/go-kit/kit/log/level" in every package that
// has to cast a log.
type Logger struct {
Raw log.Logger
Info func(...interface{}) error
Debug func(...interface{}) error
Error func(...interface{}) error
}
const callerLevel int = 6
// MakeLogger receives a io.Writer and return a Logger struct.
func MakeLogger(w io.Writer) Logger {
raw := log.NewLogfmtLogger(log.NewSyncWriter(w))
raw = log.With(raw, "ts", log.DefaultTimestampUTC, "caller", log.Caller(callerLevel))
filtered := level.NewFilter(raw, level.AllowInfo())
return Logger{
Raw: raw,
Info: level.Info(filtered).Log,
Debug: level.Debug(filtered).Log,
Error: level.Error(filtered).Log,
}
}
// AllowDebug receives a Logger and enables the debug logging level.
func AllowDebug(l Logger) Logger {
filtered := level.NewFilter(l.Raw, level.AllowDebug())
return Logger{
Raw: l.Raw,
Info: level.Info(filtered).Log,
Debug: level.Debug(filtered).Log,
Error: level.Error(filtered).Log,
}
}
|
