chore: import upstream snapshot with attribution

backend/web/base.py

@@ -0,0 +1,46 @@
+#!/usr/local/bin/python3
+# -*- coding: utf-8 -*-
+
+import tornado.web
+import libs.stock_web_dic as stock_web_dic
+import libs.common as common
+import logging
+
+#基础handler，主要负责检查mysql的数据库链接。
+class BaseHandler(tornado.web.RequestHandler):
+    def set_default_headers(self):
+        headers = self.request.headers
+        # logging.info('head的类型：',type(headers))
+        origin =  headers.get('origin',None)
+        logging.info("######################## BaseHandler ########################")
+        logging.info(origin)
+        
+        if origin != None and origin.find("localhost") > 0:
+            self.set_header("Access-Control-Allow-Credentials", "true")
+            self.set_header("Access-Control-Allow-Origin",origin)
+            self.set_header("Access-Control-Allow-Methods", "POST, GET, PUT, DELETE, OPTIONS")
+            self.set_header("Access-Control-Allow-Headers", "x-token, authorization, Authorization, Content-Type, Access-Control-Allow-Origin, Access-Control-Allow-Headers, X-Requested-By, Access-Control-Allow-Methods")
+            self.set_header("Access-Control-Expose-Headers", "Cache-Control, Content-Language, Content-Type, Expires, Last-Modified, Pragma")
+    # 同时定义一个option方法
+    def options(self):
+        self.set_status(204)
+        self.finish()
+
+    @property
+    def db(self):
+        try:
+            # check every time。
+            self.application.db.query("SELECT 1 ")
+        except Exception as e:
+            print(e)
+            self.application.db.reconnect()
+        return self.application.db
+
+class LeftMenu:
+    def __init__(self, url):
+        self.leftMenuList = stock_web_dic.STOCK_WEB_DATA_LIST
+        self.current_url = url
+
+# 获得左菜单。
+def GetLeftMenu(url):
+    return LeftMenu(url)