Add healthcheck endpoint to rpc services (#10718)

* Add healthcheck endpoint to rpc services

* Trailing whitespace ding

chia/rpc/rpc_client.py

@@ -67,6 +67,9 @@ class RpcClient:
     async def stop_node(self) -> Dict:
         return await self.fetch("stop_node", {})
 
+    async def healthz(self) -> Dict:
+        return await self.fetch("healthz", {})
+
     def close(self):
         self.closing_task = asyncio.create_task(self.session.close())
 

chia/rpc/rpc_server.py

@@ -87,6 +87,7 @@ class RpcServer:
             "/close_connection": self.close_connection,
             "/stop_node": self.stop_node,
             "/get_routes": self._get_routes,
+            "/healthz": self.healthz,
         }
 
     async def _get_routes(self, request: Dict) -> Dict:
@@ -183,6 +184,11 @@ class RpcServer:
             self.stop_cb()
         return {}
 
+    async def healthz(self, request: Dict) -> Dict:
+        return {
+            "success": "true",
+        }
+
     async def ws_api(self, message):
         """
         This function gets called when new message is received via websocket.