Remove abusable code from subnet template

neurons/miner.py

@@ -94,30 +94,38 @@ async def blacklist(
 
         Otherwise, allow the request to be processed further.
         """
-        # TODO(developer): Define how miners should blacklist requests.
-        uid = self.metagraph.hotkeys.index(synapse.dendrite.hotkey)
-        if (
-            not self.config.blacklist.allow_non_registered
-            and synapse.dendrite.hotkey not in self.metagraph.hotkeys
-        ):
-            # Ignore requests from un-registered entities.
+        try: 
+            # TODO(developer): Define how miners should blacklist requests.
+            if not synapse.dendrite.hotkey:
+                return True, "Missing hotkey/Malformed request"
+
+            if (
+                not self.config.blacklist.allow_non_registered
+                and synapse.dendrite.hotkey not in self.metagraph.hotkeys
+            ):
+                # Ignore requests from un-registered entities.
+                bt.logging.trace(
+                    f"Blacklisting un-registered hotkey {synapse.dendrite.hotkey}"
+                )
+                return True, "Unrecognized hotkey"
+
+            uid = self.metagraph.hotkeys.index(synapse.dendrite.hotkey)
+
+            if self.config.blacklist.force_validator_permit:
+                # If the config is set to force validator permit, then we should only allow requests from validators.
+                if not self.metagraph.validator_permit[uid]:
+                    bt.logging.warning(
+                        f"Blacklisting a request from non-validator hotkey {synapse.dendrite.hotkey}"
+                    )
+                    return True, "Non-validator hotkey"
+
             bt.logging.trace(
-                f"Blacklisting un-registered hotkey {synapse.dendrite.hotkey}"
+                f"Not Blacklisting recognized hotkey {synapse.dendrite.hotkey}"
             )
-            return True, "Unrecognized hotkey"
-
-        if self.config.blacklist.force_validator_permit:
-            # If the config is set to force validator permit, then we should only allow requests from validators.
-            if not self.metagraph.validator_permit[uid]:
-                bt.logging.warning(
-                    f"Blacklisting a request from non-validator hotkey {synapse.dendrite.hotkey}"
-                )
-                return True, "Non-validator hotkey"
-
-        bt.logging.trace(
-            f"Not Blacklisting recognized hotkey {synapse.dendrite.hotkey}"
-        )
-        return False, "Hotkey recognized!"
+            return False, "Hotkey recognized!"
+        except Exception as e:
+            bt.logging.error(f"Exception in blacklist_fn: {str(e)}")
+            return True
 
     async def priority(self, synapse: template.protocol.Dummy) -> float:
         """