/
logger.go
48 lines (39 loc) · 1021 Bytes
/
logger.go
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// Package logger provides logging facility.
package logger
import (
"flag"
"fmt"
"os"
"github.com/google/wire"
"github.com/spf13/pflag"
"k8s.io/klog/v2"
)
var Set = wire.NewSet(
wire.Bind(new(Interface), new(*Logger)),
wire.Struct(new(Logger)),
)
type Interface interface {
AddFlags(f *pflag.FlagSet)
Printf(format string, args ...interface{})
V(level int) Verbose
}
type Verbose interface {
Infof(format string, args ...interface{})
}
// Logger provides logging facility using klog.
type Logger struct{}
// AddFlags adds the flags such as -v.
func (*Logger) AddFlags(f *pflag.FlagSet) {
gf := flag.NewFlagSet("", flag.ContinueOnError)
klog.InitFlags(gf)
f.AddGoFlagSet(gf)
}
// Printf writes the message to stderr.
func (*Logger) Printf(format string, args ...interface{}) {
_, _ = fmt.Fprintf(os.Stderr, format, args...)
_, _ = fmt.Fprintln(os.Stderr, "")
}
// V returns a logger enabled only if the level is enabled.
func (*Logger) V(level int) Verbose {
return klog.V(klog.Level(level))
}