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component-base: verbosity in example command

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The global klog flags were not enabled (an oversight?). Once they
get added, logging at different verbosity levels can be demonstrated.
This commit is contained in:
Patrick Ohly 2021-09-14 10:33:05 +02:00
parent 82da9bdaab
commit d6519150ca
2 changed files with 18 additions and 0 deletions
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17
staging/src/k8s.io/component-base/logs/example/README.md
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@ -50,3 +50,20 @@ E0605 22:04:02.019698 3229645 logger.go:61] Log using Errorf, err: fail
E0605 22:04:02.019709 3229645 logger.go:62] "Log using ErrorS" err="fail" E0605 22:04:02.019709 3229645 logger.go:62] "Log using ErrorS" err="fail"
I0605 22:04:02.019714 3229645 logger.go:64] Log message has been redacted. Log argument #0 contains: [secret-key] I0605 22:04:02.019714 3229645 logger.go:64] Log message has been redacted. Log argument #0 contains: [secret-key]
``` ```
## Verbosity
```console
go run ./staging/src/k8s.io/component-base/logs/example/cmd/logger.go -v1
```
```
I0914 10:31:12.342958 54086 logger.go:61] Log using Infof, key: value
I0914 10:31:12.343021 54086 logger.go:62] "Log using InfoS" key="value"
E0914 10:31:12.343053 54086 logger.go:64] Log using Errorf, err: fail
E0914 10:31:12.343064 54086 logger.go:65] "Log using ErrorS" err="fail"
I0914 10:31:12.343073 54086 logger.go:67] Log with sensitive key, data: {"secret"}
I0914 10:31:12.343090 54086 logger.go:68] Log less important message
```
The last line is not printed at the default log level.

1
staging/src/k8s.io/component-base/logs/example/cmd/logger.go
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@ -61,6 +61,7 @@ func runLogger() {
klog.ErrorS(err, "Log using ErrorS") klog.ErrorS(err, "Log using ErrorS")
data := SensitiveData{Key: "secret"} data := SensitiveData{Key: "secret"}
klog.Infof("Log with sensitive key, data: %q", data) klog.Infof("Log with sensitive key, data: %q", data)
klog.V(1).Info("Log less important message")
} }
type SensitiveData struct { type SensitiveData struct {