feat: 完善后端脚手架基础能力

middlewares/request_id.go

@@ -0,0 +1,25 @@
+package middlewares
+
+import (
+	"crypto/rand"
+	"encoding/hex"
+
+	"github.com/gin-gonic/gin"
+)
+
+const RequestIDHeader = "X-Request-ID"
+
+func RequestID() gin.HandlerFunc {
+	return func(c *gin.Context) {
+		requestID := c.GetHeader(RequestIDHeader)
+		if requestID == "" {
+			value := make([]byte, 16)
+			if _, err := rand.Read(value); err == nil {
+				requestID = hex.EncodeToString(value)
+			}
+		}
+		c.Set("request_id", requestID)
+		c.Header(RequestIDHeader, requestID)
+		c.Next()
+	}
+}