fix bug due to access to expiring

ml/thing.py

@@ -125,23 +125,29 @@ def add_user_def(func):
 
     def __dir_syn(self):
         while True:
-            time.sleep(0.1)
-            old_dir_json = self.dir_json
-            self.to_dir_json()
-            if self.dir_json == old_dir_json:
+            try:
+                time.sleep(0.1)
+                old_dir_json = self.dir_json
+                self.to_dir_json()
+                if self.dir_json == old_dir_json:
+                    continue
+                else:
+                    self.dir.updateThingIDBased(thingID=self.thing_id, payload=self.dir_json)
+            except:
                 continue
-            else:
-                self.dir.updateThingIDBased(thingID=self.thing_id, payload=self.dir_json)
 
     def __repo_syn(self):
         while self.__is_repo:
-            time.sleep(0.1)
-            old_repo_json = self.repo_json
-            self.to_repo_json()
-            if self.repo_json == old_repo_json:
+            try:
+                time.sleep(0.1)
+                old_repo_json = self.repo_json
+                self.to_repo_json()
+                if self.repo_json == old_repo_json:
+                    continue
+                else:
+                    self.repo.updateThingIDBased(thingID=self.thing_id, payload=self.repo_json)
+            except:
                 continue
-            else:
-                self.repo.updateThingIDBased(thingID=self.thing_id, payload=self.repo_json)
 
     def __connect_with_idp(self):
         print(BColors.OKBLUE + "[S³I][IdP]" + BColors.ENDC + ": Connect with S3I-IdentityProvider")
@@ -165,7 +171,6 @@ def __on_token(self, token):
         if self.__is_broker:
             self.__connect_with_broker()
 
-
     def __connect_with_dir(self):
         print(
             BColors.OKBLUE
@@ -223,7 +228,7 @@ def __on_websocket_connection_closed(self):
         )
 
     def sync_with_repo(self, path, topic):
-        #TODO
+        # TODO
         if not self.__ws_connected:
             return None
         msg = {"topic": topic, "path": path, "value": self.repo_json[path]}
@@ -237,12 +242,17 @@ def __connect_with_broker(self):
 
             def receive():
                 while True:
-                    msg_str = self.broker.receive_once(self.__endpoint)
-                    if msg_str == "":
+                    try:
+                        time.sleep(0.1)
+                        msg_str = self.broker.receive_once(self.__endpoint)
+                        if msg_str == "":
+                            continue
+                        else:
+                            self.__on_broker_callback(ch=None, method=None, properties=None,
+                                                      body=json.loads(msg_str))
+                    except:
                         continue
-                    else:
-                        self.__on_broker_callback(ch=None, method=None, properties=None,
-                                                  body=json.loads(msg_str))
+
             threading.Thread(
                 target=receive
             ).start()
@@ -423,11 +433,8 @@ def on_service_request(self, body_json):
                 replyingToUUID=body_json.get("identifier", None),
                 msgUUID="s3i:{}".format(uuid.uuid4())
             )
-            receiver_eps = list()
-            for r in service_reply.msg.get("receivers", None):
-                receiver_ep = find_broker_endpoint(self.dir, r)
-                receiver_eps.append(receiver_ep)
-            self.broker.send(receiver_endpoints=receiver_eps, msg=json.dumps(service_reply.msg))
+            self.broker.send(receiver_endpoints=[body_json.get("replyToEndpoint", None)],
+                             msg=json.dumps(service_reply.msg))
 
     def on_get_value_reply(self, msg):
         print(
@@ -454,7 +461,7 @@ def to_dir_json(self):
         if self.policy_id is not None:
             self.dir_json["policyId"] = self.policy_id
         self.dir_json["attributes"]["class"] = "ml40::Thing"
-     
+
         self.dir_json["attributes"]["name"] = self.name
         if self.roles:
             self.dir_json["attributes"]["roles"] = list()
@@ -500,5 +507,3 @@ def to_subthing_json(self):
         for key in self.features.keys():
             json_out["features"].append(self.features[key].to_json())
         return json_out
-
-