File size: 2,205 Bytes
f9c42e5 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 | import asyncio
import logging
import traceback
import msgpack_numpy
import websockets.server
import websockets.frames
from time import time
class WebsocketPolicyServer:
"""Serves a policy using the websocket protocol. See websocket_client_policy.py for a client implementation.
Currently only implements the `load` and `infer` methods.
"""
def __init__(
self,
policy: _base_policy.BasePolicy,
host: str = "0.0.0.0",
port: int = 8000,
metadata: dict | None = None,
) -> None:
self._policy = policy
self._host = host
self._port = port
self._metadata = metadata or {}
self.last_finegrained_prompt = ""
logging.getLogger("websockets.server").setLevel(logging.INFO)
def serve_forever(self) -> None:
asyncio.run(self.run())
async def run(self):
async with websockets.serve(
self._handler,
self._host,
self._port,
compression=None,
max_size=None,
) as server:
await server.serve_forever()
async def _handler(self, websocket: websockets.server.ServerConnection):
logging.info(f"Connection from {websocket.remote_address} opened")
packer = msgpack_numpy.Packer()
await websocket.send(packer.pack(self._metadata))
while True:
try:
obs = msgpack_numpy.unpackb(await websocket.recv())
t1 = time()
result = self._policy.infer(obs)
t2 = time()
print(f'total time consumption: {t2 - t1}')
await websocket.send(packer.pack(result['actions']))
except websockets.ConnectionClosed:
logging.info(f"Connection from {websocket.remote_address} closed")
break
except Exception:
await websocket.send(traceback.format_exc())
await websocket.close(
code=websockets.frames.CloseCode.INTERNAL_ERROR,
reason="Internal server error. Traceback included in previous frame.",
)
raise
|