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Add an example for tracing global variable with hook

This commit is contained in:
David Bariod 2018-10-15 21:20:03 +02:00
parent 4582136994
commit f2ab87f230
3 changed files with 40 additions and 0 deletions
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37
example_global_hook_test.go Normal file
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@ -0,0 +1,37 @@
package logrus_test
import (
"github.com/sirupsen/logrus"
"os"
)
var (
mystring string
)
type GlobalHook struct {
}
func (h *GlobalHook) Levels() []logrus.Level {
return logrus.AllLevels
}
func (h *GlobalHook) Fire(e *logrus.Entry) error {
e.Data["mystring"] = mystring
return nil
}
func Example() {
l := logrus.New()
l.Out = os.Stdout
l.Formatter = &logrus.TextFormatter{DisableTimestamp: true}
l.Formatter.(*logrus.TextFormatter).DisableTimestamp = true
l.AddHook(&GlobalHook{})
mystring = "first value"
l.Info("first log")
mystring = "another value"
l.Info("second log")
// Output:
// level=info msg="first log" mystring="first value"
// level=info msg="second log" mystring="another value"
}

1
go.mod
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@ -4,6 +4,7 @@ require (
github.com/davecgh/go-spew v1.1.1 // indirect
github.com/konsorten/go-windows-terminal-sequences v0.0.0-20180402223658-b729f2633dfe
github.com/pmezard/go-difflib v1.0.0 // indirect
github.com/stretchr/objx v0.1.1 // indirect
github.com/stretchr/testify v1.2.2
golang.org/x/crypto v0.0.0-20180904163835-0709b304e793
golang.org/x/sys v0.0.0-20180905080454-ebe1bf3edb33

2
go.sum
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@ -4,6 +4,8 @@ github.com/konsorten/go-windows-terminal-sequences v0.0.0-20180402223658-b729f26
github.com/konsorten/go-windows-terminal-sequences v0.0.0-20180402223658-b729f2633dfe/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
github.com/stretchr/objx v0.1.1 h1:2vfRuCMp5sSVIDSqO8oNnWJq7mPa6KVP3iPIwFBuy8A=
github.com/stretchr/objx v0.1.1/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
github.com/stretchr/testify v1.2.2 h1:bSDNvY7ZPG5RlJ8otE/7V6gMiyenm9RtJ7IUVIAoJ1w=
github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
golang.org/x/crypto v0.0.0-20180904163835-0709b304e793 h1:u+LnwYTOOW7Ukr/fppxEb1Nwz0AtPflrblfvUudpo+I=