feat: provisionerd tracing, add public trace ingestion (#4070)

coderd/tracing/util.go

@@ -0,0 +1,19 @@
+package tracing
+
+import (
+	"runtime"
+	"strings"
+)
+
+func FuncName() string {
+	fnpc, _, _, ok := runtime.Caller(1)
+	if !ok {
+		return ""
+	}
+	fn := runtime.FuncForPC(fnpc)
+	name := fn.Name()
+	if i := strings.LastIndex(name, "/"); i > 0 {
+		name = name[i+1:]
+	}
+	return name
+}