add detect caller name tools

caller.go

+/*
+* @Author: cuiweiqiang
+* @Date:  2019-01-17 10:17
+ */
+
+package utils
+
+import (
+	"runtime"
+)
+
+func GetCurrentFunctionName() string {
+	return getFrame(1).Function
+}
+
+func GetCallerFunctionName() string {
+	return getFrame(2).Function
+}
+
+func getFrame(skipFrames int) runtime.Frame {
+	targetFrameIndex := skipFrames + 2
+
+	programCounters := make([]uintptr, targetFrameIndex+2)
+	n := runtime.Callers(0, programCounters)
+
+	frame := runtime.Frame{Function: "unknown"}
+	if n > 0 {
+		frames := runtime.CallersFrames(programCounters[:n])
+		for more, frameIndex := true, 0; more && frameIndex <= targetFrameIndex; frameIndex++ {
+			var frameCandidate runtime.Frame
+			frameCandidate, more = frames.Next()
+			if frameIndex == targetFrameIndex {
+				frame = frameCandidate
+			}
+		}
+	}
+
+	return frame
+}

caller_test.go

+/*
+* @Author: cuiweiqiang
+* @Date:  2019-01-17 10:30
+ */
+
+package utils
+
+import (
+	"testing"
+)
+
+func TestGetCurrentFunctionName(t *testing.T) {
+	funcName := GetCurrentFunctionName()
+
+	if funcName == "gitlab.qingclass.cn/cuiweiqiang/utils.TestGetCurrentFunctionName" {
+		t.Log("success")
+	} else {
+		t.Failed()
+	}
+}
+
+func TestGetCallerFunctionName(t *testing.T) {
+	callerName := GetCallerFunctionName()
+
+	if callerName == "testing.tRunner" {
+		t.Log("success")
+	} else {
+		t.Failed()
+	}
+}