Errors: Introduce error type with Grafana specific metadata (#47504)

pkg/util/errutil/log.go

@@ -0,0 +1,37 @@
+package errutil
+
+type LogLevel string
+
+const (
+	LevelUnknown LogLevel = ""
+	LevelNever   LogLevel = "never"
+	LevelDebug   LogLevel = "debug"
+	LevelInfo    LogLevel = "info"
+	LevelWarn    LogLevel = "warn"
+	LevelError   LogLevel = "error"
+)
+
+// LogInterface is a subset of github.com/grafana/grafana/pkg/infra/log.Logger
+// to avoid having to depend on other packages in the module so that
+// there's no risk of circular dependencies.
+type LogInterface interface {
+	Debug(msg string, ctx ...interface{})
+	Info(msg string, ctx ...interface{})
+	Warn(msg string, ctx ...interface{})
+	Error(msg string, ctx ...interface{})
+}
+
+func (l LogLevel) LogFunc(logger LogInterface) func(msg string, ctx ...interface{}) {
+	switch l {
+	case LevelNever:
+		return func(_ string, _ ...interface{}) {}
+	case LevelDebug:
+		return logger.Debug
+	case LevelInfo:
+		return logger.Info
+	case LevelWarn:
+		return logger.Warn
+	default: // LevelUnknown and LevelError
+		return logger.Error
+	}
+}