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Merge pull request sirupsen#842 from dgsb/master
Add an example for tracing global variable with hook
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,36 @@ | ||
| package logrus_test | ||
|
|
||
| import ( | ||
| "github.com/sirupsen/logrus" | ||
| "os" | ||
| ) | ||
|
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||
| var ( | ||
| mystring string | ||
| ) | ||
|
|
||
| type GlobalHook struct { | ||
| } | ||
|
|
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| func (h *GlobalHook) Levels() []logrus.Level { | ||
| return logrus.AllLevels | ||
| } | ||
|
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| func (h *GlobalHook) Fire(e *logrus.Entry) error { | ||
| e.Data["mystring"] = mystring | ||
| return nil | ||
| } | ||
|
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| func Example() { | ||
| l := logrus.New() | ||
| l.Out = os.Stdout | ||
| l.Formatter = &logrus.TextFormatter{DisableTimestamp: true, DisableColors: 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" | ||
| } |
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