feat: agent structure and implementation new

architecture with unit tests

ref: N25B-205

src/control_backend/agents/ri_command_agent.py

@@ -0,0 +1,60 @@
+import json
+import logging
+from spade.agent import Agent
+from spade.behaviour import CyclicBehaviour
+import zmq
+
+from control_backend.core.config import settings
+from control_backend.core.zmq_context import context
+from control_backend.schemas.message import Message
+
+logger = logging.getLogger(__name__)
+
+class RICommandAgent(Agent):
+    subsocket: zmq.Socket
+    pubsocket: zmq.Socket
+    address = ""
+    bind = False
+
+    def __init__(self, jid: str, password: str, port: int = 5222, verify_security: bool = False, address = "tcp://localhost:0000", bind = False):
+        super().__init__(jid, password, port, verify_security)
+        self.address = address
+        self.bind = bind
+
+    class SendCommandsBehaviour(CyclicBehaviour):
+        async def run(self):
+            assert self.agent is not None
+            # Get a message internally (with topic command)
+            topic, body = await self.agent.subsocket.recv_multipart()
+            
+            # Try to get body
+            try:
+                message_json = json.loads(body.decode("utf-8"))
+                message = Message.model_validate(message_json)
+                logger.info("Received message \"%s\"", message.message)
+
+                # Send to the robot.
+                await self.agent.pubsocket.send_json(message)
+            except Exception as e:
+                logger.error("Error processing message: %s", e)
+
+    async def setup(self):
+        logger.info("Setting up %s", self.jid)
+
+        # To the robot
+        self.pubsocket = context.socket(zmq.PUB)
+        if self.bind: 
+            self.pubsocket.bind(self.address)
+        else :
+            self.pubsocket.connect(self.address)
+        
+        # Receive internal topics regarding commands
+        self.subsocket = context.socket(zmq.SUB)
+        self.subsocket.connect(settings.zmq_settings.internal_comm_address)
+        self.subsocket.setsockopt(zmq.SUBSCRIBE, b"command")
+
+        # Add behaviour to our agent
+        commands_behaviour = self.SendCommandsBehaviour()
+        self.add_behaviour(commands_behaviour)
+
+        logger.info("Finished setting up %s", self.jid)