add: redirect and vendor-data

- add redirect and vendor-data (empty only, to speed up boot)
- some CQ too
- default file names standardized

main.py

@@ -13,8 +13,9 @@ PATH = os.path.dirname(os.path.abspath(__file__))
 config = configparser.ConfigParser()
 config.read(os.path.join(PATH, "config.ini"))
 
-user_data_filename = config["app"].get("user_data", "sample_file.txt")
-meta_data_filename = config["app"].get("meta_data", "meta_data_extra.txt")
+user_data_filename = config["app"].get("user_data", "user-data")
+meta_data_filename = config["app"].get("meta_data", "meta-data")
+redirect_filename = config["app"].get("redirect", "redirect")
 
 
 class MainApp:
@@ -27,7 +28,7 @@ class MainApp:
                 'X-Real-Ip',
                 cherrypy.request.remote.ip
             )
-        except:
+        except BaseException:
             self.remoteip = cherrypy.request.remote.ip
 
         try:
@@ -35,12 +36,25 @@ class MainApp:
         except socket.herror:
             self.hostinfo = ('localhost', )
 
+    def _redirect_if_needed(self):
+        filepath = os.path.join(PATH, "data", self.hostinfo[0],
+                                "redirect")
+        if os.path.exists(filepath):
+            try:
+                with open(filepath) as f:
+                    content = f.read().splitlines()
+                raise cherrypy.HTTPRedirect(content[0], 301)
+            except BaseException:
+                return False
+        return False
+
     @cherrypy.expose
     def user_data(self):
         """
         Serves a static file
         """
         self._init_ip()
+        self._redirect_if_needed()
         filepath = os.path.join(PATH, "data", self.hostinfo[0],
                                 user_data_filename)
         if not os.path.exists(filepath):
@@ -53,8 +67,12 @@ class MainApp:
         Return meta-data in YAML
         """
         self._init_ip()
-        hostname =self.hostinfo[0]
-        data = {"instance-id": hostname.split(".")[0], "local-hostname": hostname}
+        self._redirect_if_needed()
+        hostname = self.hostinfo[0]
+        data = {
+                "instance-id": hostname.split(".")[0],
+                "local-hostname": hostname
+        }
 
         filepath = os.path.join(PATH, "data", hostname, meta_data_filename)
         if os.path.exists(filepath):
@@ -65,6 +83,13 @@ class MainApp:
 
         return yaml.dump(data)
 
+    @cherrypy.expose
+    def vendor_data(self):
+        """
+        Return empty vendor-data
+        """
+        return ""
+
     @cherrypy.expose
     def finished(self, data):
         """