move log package to /infra (#17023)

ref #14679

Signed-off-by: zhulongcheng <zhulongcheng.me@gmail.com>

pkg/infra/log/interface.go

@@ -0,0 +1,31 @@
+package log
+
+import "github.com/inconshreveable/log15"
+
+type Lvl int
+
+const (
+	LvlCrit Lvl = iota
+	LvlError
+	LvlWarn
+	LvlInfo
+	LvlDebug
+)
+
+type Logger interface {
+	// New returns a new Logger that has this logger's context plus the given context
+	New(ctx ...interface{}) log15.Logger
+
+	// GetHandler gets the handler associated with the logger.
+	GetHandler() log15.Handler
+
+	// SetHandler updates the logger to write records to the specified handler.
+	SetHandler(h log15.Handler)
+
+	// Log a message at the given level with context key/value pairs
+	Debug(msg string, ctx ...interface{})
+	Info(msg string, ctx ...interface{})
+	Warn(msg string, ctx ...interface{})
+	Error(msg string, ctx ...interface{})
+	Crit(msg string, ctx ...interface{})
+}