264 lines
9.3 KiB
Python

"""Feishu/Lark channel implementation using lark-oapi SDK with WebSocket long connection."""
import asyncio
import json
import threading
from collections import OrderedDict
from typing import Any
from loguru import logger
from nanobot.bus.events import OutboundMessage
from nanobot.bus.queue import MessageBus
from nanobot.channels.base import BaseChannel
from nanobot.config.schema import FeishuConfig
try:
import lark_oapi as lark
from lark_oapi.api.im.v1 import (
CreateMessageRequest,
CreateMessageRequestBody,
CreateMessageReactionRequest,
CreateMessageReactionRequestBody,
Emoji,
P2ImMessageReceiveV1,
)
FEISHU_AVAILABLE = True
except ImportError:
FEISHU_AVAILABLE = False
lark = None
Emoji = None
# Message type display mapping
MSG_TYPE_MAP = {
"image": "[image]",
"audio": "[audio]",
"file": "[file]",
"sticker": "[sticker]",
}
class FeishuChannel(BaseChannel):
"""
Feishu/Lark channel using WebSocket long connection.
Uses WebSocket to receive events - no public IP or webhook required.
Requires:
- App ID and App Secret from Feishu Open Platform
- Bot capability enabled
- Event subscription enabled (im.message.receive_v1)
"""
name = "feishu"
def __init__(self, config: FeishuConfig, bus: MessageBus):
super().__init__(config, bus)
self.config: FeishuConfig = config
self._client: Any = None
self._ws_client: Any = None
self._ws_thread: threading.Thread | None = None
self._processed_message_ids: OrderedDict[str, None] = OrderedDict() # Ordered dedup cache
self._loop: asyncio.AbstractEventLoop | None = None
async def start(self) -> None:
"""Start the Feishu bot with WebSocket long connection."""
if not FEISHU_AVAILABLE:
logger.error("Feishu SDK not installed. Run: pip install lark-oapi")
return
if not self.config.app_id or not self.config.app_secret:
logger.error("Feishu app_id and app_secret not configured")
return
self._running = True
self._loop = asyncio.get_running_loop()
# Create Lark client for sending messages
self._client = lark.Client.builder() \
.app_id(self.config.app_id) \
.app_secret(self.config.app_secret) \
.log_level(lark.LogLevel.INFO) \
.build()
# Create event handler (only register message receive, ignore other events)
event_handler = lark.EventDispatcherHandler.builder(
self.config.encrypt_key or "",
self.config.verification_token or "",
).register_p2_im_message_receive_v1(
self._on_message_sync
).build()
# Create WebSocket client for long connection
self._ws_client = lark.ws.Client(
self.config.app_id,
self.config.app_secret,
event_handler=event_handler,
log_level=lark.LogLevel.INFO
)
# Start WebSocket client in a separate thread
def run_ws():
try:
self._ws_client.start()
except Exception as e:
logger.error(f"Feishu WebSocket error: {e}")
self._ws_thread = threading.Thread(target=run_ws, daemon=True)
self._ws_thread.start()
logger.info("Feishu bot started with WebSocket long connection")
logger.info("No public IP required - using WebSocket to receive events")
# Keep running until stopped
while self._running:
await asyncio.sleep(1)
async def stop(self) -> None:
"""Stop the Feishu bot."""
self._running = False
if self._ws_client:
try:
self._ws_client.stop()
except Exception as e:
logger.warning(f"Error stopping WebSocket client: {e}")
logger.info("Feishu bot stopped")
def _add_reaction_sync(self, message_id: str, emoji_type: str) -> None:
"""Sync helper for adding reaction (runs in thread pool)."""
try:
request = CreateMessageReactionRequest.builder() \
.message_id(message_id) \
.request_body(
CreateMessageReactionRequestBody.builder()
.reaction_type(Emoji.builder().emoji_type(emoji_type).build())
.build()
).build()
response = self._client.im.v1.message_reaction.create(request)
if not response.success():
logger.warning(f"Failed to add reaction: code={response.code}, msg={response.msg}")
else:
logger.debug(f"Added {emoji_type} reaction to message {message_id}")
except Exception as e:
logger.warning(f"Error adding reaction: {e}")
async def _add_reaction(self, message_id: str, emoji_type: str = "THUMBSUP") -> None:
"""
Add a reaction emoji to a message (non-blocking).
Common emoji types: THUMBSUP, OK, EYES, DONE, OnIt, HEART
"""
if not self._client or not Emoji:
return
loop = asyncio.get_running_loop()
await loop.run_in_executor(None, self._add_reaction_sync, message_id, emoji_type)
async def send(self, msg: OutboundMessage) -> None:
"""Send a message through Feishu."""
if not self._client:
logger.warning("Feishu client not initialized")
return
try:
# Determine receive_id_type based on chat_id format
# open_id starts with "ou_", chat_id starts with "oc_"
if msg.chat_id.startswith("oc_"):
receive_id_type = "chat_id"
else:
receive_id_type = "open_id"
# Build text message content
content = json.dumps({"text": msg.content})
request = CreateMessageRequest.builder() \
.receive_id_type(receive_id_type) \
.request_body(
CreateMessageRequestBody.builder()
.receive_id(msg.chat_id)
.msg_type("text")
.content(content)
.build()
).build()
response = self._client.im.v1.message.create(request)
if not response.success():
logger.error(
f"Failed to send Feishu message: code={response.code}, "
f"msg={response.msg}, log_id={response.get_log_id()}"
)
else:
logger.debug(f"Feishu message sent to {msg.chat_id}")
except Exception as e:
logger.error(f"Error sending Feishu message: {e}")
def _on_message_sync(self, data: "P2ImMessageReceiveV1") -> None:
"""
Sync handler for incoming messages (called from WebSocket thread).
Schedules async handling in the main event loop.
"""
if self._loop and self._loop.is_running():
asyncio.run_coroutine_threadsafe(self._on_message(data), self._loop)
async def _on_message(self, data: "P2ImMessageReceiveV1") -> None:
"""Handle incoming message from Feishu."""
try:
event = data.event
message = event.message
sender = event.sender
# Deduplication check
message_id = message.message_id
if message_id in self._processed_message_ids:
return
self._processed_message_ids[message_id] = None
# Trim cache: keep most recent 500 when exceeds 1000
while len(self._processed_message_ids) > 1000:
self._processed_message_ids.popitem(last=False)
# Skip bot messages
sender_type = sender.sender_type
if sender_type == "bot":
return
sender_id = sender.sender_id.open_id if sender.sender_id else "unknown"
chat_id = message.chat_id
chat_type = message.chat_type # "p2p" or "group"
msg_type = message.message_type
# Add reaction to indicate "seen"
await self._add_reaction(message_id, "THUMBSUP")
# Parse message content
if msg_type == "text":
try:
content = json.loads(message.content).get("text", "")
except json.JSONDecodeError:
content = message.content or ""
else:
content = MSG_TYPE_MAP.get(msg_type, f"[{msg_type}]")
if not content:
return
# Forward to message bus
reply_to = chat_id if chat_type == "group" else sender_id
await self._handle_message(
sender_id=sender_id,
chat_id=reply_to,
content=content,
metadata={
"message_id": message_id,
"chat_type": chat_type,
"msg_type": msg_type,
}
)
except Exception as e:
logger.error(f"Error processing Feishu message: {e}")