first commit: one-api base code + SAAS plan document

middleware/request-id.go

@@ -0,0 +1,18 @@
+package middleware
+
+import (
+	"github.com/gin-gonic/gin"
+
+	"github.com/songquanpeng/one-api/common/helper"
+)
+
+func RequestId() func(c *gin.Context) {
+	return func(c *gin.Context) {
+		id := helper.GenRequestID()
+		c.Set(helper.RequestIdKey, id)
+		ctx := helper.SetRequestID(c.Request.Context(), id)
+		c.Request = c.Request.WithContext(ctx)
+		c.Header(helper.RequestIdKey, id)
+		c.Next()
+	}
+}