/
klog.go
79 lines (69 loc) · 1.89 KB
/
klog.go
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package log
import (
"fmt"
"strings"
"github.com/go-logr/logr"
"github.com/sirupsen/logrus"
"k8s.io/klog/v2"
)
// InitKlogShim creates a shim between logrus and klog by forwarding klog
// messages to the logrus logger. To reduce the overall verbosity we log every
// Info klog message in logrus Debug verbosity.
func InitKlogShim() {
klog.LogToStderr(false)
klog.SetLogger(logr.New(&logSink{}))
}
type logSink struct{}
func (l *logSink) Info(level int, msg string, keysAndValues ...interface{}) {
res := &strings.Builder{}
res.WriteString(msg)
writeKeysAndValues(res, keysAndValues...)
logrus.Debug(res.String())
}
func (l *logSink) Error(err error, msg string, keysAndValues ...interface{}) {
res := &strings.Builder{}
res.WriteString(msg)
if err != nil {
res.WriteString(": ")
res.WriteString(err.Error())
}
writeKeysAndValues(res, keysAndValues...)
logrus.Error(res.String())
}
func writeKeysAndValues(b *strings.Builder, keysAndValues ...interface{}) {
const missingValue = "[MISSING]"
for i := 0; i < len(keysAndValues); i += 2 {
var v interface{}
k := keysAndValues[i]
if i+1 < len(keysAndValues) {
v = keysAndValues[i+1]
} else {
v = missingValue
}
if i == 0 {
b.WriteString(" (")
}
if i > 0 {
b.WriteRune(' ')
}
switch v.(type) {
case string, error:
b.WriteString(fmt.Sprintf("%s=%q", k, v))
case []byte:
b.WriteString(fmt.Sprintf("%s=%+q", k, v))
default:
if _, ok := v.(fmt.Stringer); ok {
b.WriteString(fmt.Sprintf("%s=%q", k, v))
} else {
b.WriteString(fmt.Sprintf("%s=%+v", k, v))
}
}
if i == len(keysAndValues) {
b.WriteRune(')')
}
}
}
func (l *logSink) Init(logr.RuntimeInfo) {}
func (l *logSink) Enabled(int) bool { return true }
func (l *logSink) WithValues(...interface{}) logr.LogSink { return l }
func (l *logSink) WithName(string) logr.LogSink { return l }