Enable multiple llms

sia/web/llm_websocket.py

@@ -0,0 +1,57 @@
+from aiohttp import web, WSMsgType
+from typing import Dict, Set
+
+from .util import wrap_async
+from ..web_agent import WebAgent, LlmState
+
+class LlmWebSocket:
+    """
+    WebSocket handler for LLM state changes.
+    Broadcasts state updates to all connected clients.
+    """
+    
+    def __init__(self, agent: WebAgent):
+        self._agent = agent
+        self._clients: Set[web.WebSocketResponse] = set()
+        self._agent.add_llm_change_handler(wrap_async(self._handle_state_change))
+        
+    async def _broadcast_message(self, message: Dict):
+        """Broadcast message to all connected clients."""
+        disconnected = set()
+        for ws in self._clients:
+            try:
+                await ws.send_json(message)
+            except ConnectionResetError:
+                disconnected.add(ws)
+        self._clients -= disconnected
+
+    async def _handle_state_change(self, llm_name: str, new_state: LlmState):
+        """Handle state changes from the WebAgent."""
+        await self._broadcast_message({
+            "llm": llm_name,
+            "state": new_state.name
+        })
+
+    async def handle_connection(self, request: web.Request) -> web.WebSocketResponse:
+        """Handle new WebSocket connections."""
+        ws = web.WebSocketResponse(heartbeat=30)
+        await ws.prepare(request)
+        
+        try:
+            # Send initial states for all LLMs
+            states = self._agent.llms
+            for llm_name, state in states.items():
+                await ws.send_json({
+                    "llm": llm_name,
+                    "state": state.name
+                })
+        
+            self._clients.add(ws)
+                
+            async for msg in ws:
+                if msg.type == WSMsgType.ERROR:
+                    print(f"WebSocket connection closed with error: {ws.exception()}")
+        finally:
+            self._clients.remove(ws)
+            
+        return ws