Module slack_sdk.socket_mode.async_client
Expand source code
import asyncio
import json
import logging
from asyncio import Queue, Lock
from asyncio.futures import Future
from logging import Logger
from typing import Dict, Union, Any, Optional, List, Callable, Awaitable
from slack_sdk.errors import SlackApiError
from slack_sdk.socket_mode.async_listeners import (
AsyncWebSocketMessageListener,
AsyncSocketModeRequestListener,
)
from slack_sdk.socket_mode.request import SocketModeRequest
from slack_sdk.socket_mode.response import SocketModeResponse
from slack_sdk.web.async_client import AsyncWebClient
class AsyncBaseSocketModeClient:
logger: Logger
web_client: AsyncWebClient
app_token: str
wss_uri: str
auto_reconnect_enabled: bool
trace_enabled: bool
closed: bool
connect_operation_lock: Lock
message_queue: Queue
message_listeners: List[
Union[
AsyncWebSocketMessageListener,
Callable[["AsyncBaseSocketModeClient", dict, Optional[str]], Awaitable[None]],
]
]
socket_mode_request_listeners: List[
Union[
AsyncSocketModeRequestListener,
Callable[["AsyncBaseSocketModeClient", SocketModeRequest], Awaitable[None]],
]
]
async def issue_new_wss_url(self) -> str:
try:
response = await self.web_client.apps_connections_open(app_token=self.app_token)
return response["url"]
except SlackApiError as e:
if e.response["error"] == "ratelimited":
# NOTE: ratelimited errors rarely occur with this endpoint
delay = int(e.response.headers.get("Retry-After", "30")) # Tier1
self.logger.info(f"Rate limited. Retrying in {delay} seconds...")
await asyncio.sleep(delay)
# Retry to issue a new WSS URL
return await self.issue_new_wss_url()
else:
# other errors
self.logger.error(f"Failed to retrieve WSS URL: {e}")
raise e
async def is_connected(self) -> bool:
return False
async def session_id(self) -> str:
return ""
async def connect(self):
raise NotImplementedError()
async def disconnect(self):
raise NotImplementedError()
async def connect_to_new_endpoint(self, force: bool = False):
session_id = await self.session_id()
try:
await self.connect_operation_lock.acquire()
if self.trace_enabled:
self.logger.debug(f"For reconnection, the connect_operation_lock was acquired (session: {session_id})")
if force or not await self.is_connected():
self.wss_uri = await self.issue_new_wss_url()
await self.connect()
finally:
if self.connect_operation_lock.locked() is True:
self.connect_operation_lock.release()
if self.trace_enabled:
self.logger.debug(f"The connect_operation_lock for reconnection was released (session: {session_id})")
async def close(self):
self.closed = True
await self.disconnect()
async def send_message(self, message: str):
raise NotImplementedError()
async def send_socket_mode_response(self, response: Union[Dict[str, Any], SocketModeResponse]):
if isinstance(response, SocketModeResponse):
await self.send_message(json.dumps(response.to_dict()))
else:
await self.send_message(json.dumps(response))
async def enqueue_message(self, message: str):
await self.message_queue.put(message)
if self.logger.level <= logging.DEBUG:
queue_size = self.message_queue.qsize()
session_id = await self.session_id()
self.logger.debug(f"A new message enqueued (current queue size: {queue_size}, session: {session_id})")
async def process_messages(self):
session_id = await self.session_id()
try:
while not self.closed:
try:
await self.process_message()
except asyncio.CancelledError:
# if self.closed is True, the connection is already closed
# In this case, we can ignore the exception here
if not self.closed:
raise
except Exception as e:
self.logger.exception(f"Failed to process a message: {e}, session: {session_id}")
except asyncio.CancelledError:
if self.trace_enabled:
self.logger.debug(f"The running process_messages task for {session_id} is now cancelled")
raise
async def process_message(self):
raw_message = await self.message_queue.get()
if raw_message is not None:
message: dict = {}
if raw_message.startswith("{"):
message = json.loads(raw_message)
_: Future[None] = asyncio.ensure_future(self.run_message_listeners(message, raw_message))
async def run_message_listeners(self, message: dict, raw_message: str) -> None:
session_id = await self.session_id()
type, envelope_id = message.get("type"), message.get("envelope_id")
if self.logger.level <= logging.DEBUG:
self.logger.debug(
f"Message processing started (type: {type}, envelope_id: {envelope_id}, session: {session_id})"
)
try:
if message.get("type") == "disconnect":
await self.connect_to_new_endpoint(force=True)
return
for listener in self.message_listeners:
try:
await listener(self, message, raw_message) # type: ignore
except Exception as e:
self.logger.exception(f"Failed to run a message listener: {e}, session: {session_id}")
if len(self.socket_mode_request_listeners) > 0:
request = SocketModeRequest.from_dict(message)
if request is not None:
for listener in self.socket_mode_request_listeners:
try:
await listener(self, request) # type: ignore
except Exception as e:
self.logger.exception(f"Failed to run a request listener: {e}, session: {session_id}")
except Exception as e:
self.logger.exception(f"Failed to run message listeners: {e}, session: {session_id}")
finally:
if self.logger.level <= logging.DEBUG:
self.logger.debug(
f"Message processing completed ("
f"type: {type}, "
f"envelope_id: {envelope_id}, "
f"session: {session_id})"
)
Classes
class AsyncBaseSocketModeClient
-
Expand source code
class AsyncBaseSocketModeClient: logger: Logger web_client: AsyncWebClient app_token: str wss_uri: str auto_reconnect_enabled: bool trace_enabled: bool closed: bool connect_operation_lock: Lock message_queue: Queue message_listeners: List[ Union[ AsyncWebSocketMessageListener, Callable[["AsyncBaseSocketModeClient", dict, Optional[str]], Awaitable[None]], ] ] socket_mode_request_listeners: List[ Union[ AsyncSocketModeRequestListener, Callable[["AsyncBaseSocketModeClient", SocketModeRequest], Awaitable[None]], ] ] async def issue_new_wss_url(self) -> str: try: response = await self.web_client.apps_connections_open(app_token=self.app_token) return response["url"] except SlackApiError as e: if e.response["error"] == "ratelimited": # NOTE: ratelimited errors rarely occur with this endpoint delay = int(e.response.headers.get("Retry-After", "30")) # Tier1 self.logger.info(f"Rate limited. Retrying in {delay} seconds...") await asyncio.sleep(delay) # Retry to issue a new WSS URL return await self.issue_new_wss_url() else: # other errors self.logger.error(f"Failed to retrieve WSS URL: {e}") raise e async def is_connected(self) -> bool: return False async def session_id(self) -> str: return "" async def connect(self): raise NotImplementedError() async def disconnect(self): raise NotImplementedError() async def connect_to_new_endpoint(self, force: bool = False): session_id = await self.session_id() try: await self.connect_operation_lock.acquire() if self.trace_enabled: self.logger.debug(f"For reconnection, the connect_operation_lock was acquired (session: {session_id})") if force or not await self.is_connected(): self.wss_uri = await self.issue_new_wss_url() await self.connect() finally: if self.connect_operation_lock.locked() is True: self.connect_operation_lock.release() if self.trace_enabled: self.logger.debug(f"The connect_operation_lock for reconnection was released (session: {session_id})") async def close(self): self.closed = True await self.disconnect() async def send_message(self, message: str): raise NotImplementedError() async def send_socket_mode_response(self, response: Union[Dict[str, Any], SocketModeResponse]): if isinstance(response, SocketModeResponse): await self.send_message(json.dumps(response.to_dict())) else: await self.send_message(json.dumps(response)) async def enqueue_message(self, message: str): await self.message_queue.put(message) if self.logger.level <= logging.DEBUG: queue_size = self.message_queue.qsize() session_id = await self.session_id() self.logger.debug(f"A new message enqueued (current queue size: {queue_size}, session: {session_id})") async def process_messages(self): session_id = await self.session_id() try: while not self.closed: try: await self.process_message() except asyncio.CancelledError: # if self.closed is True, the connection is already closed # In this case, we can ignore the exception here if not self.closed: raise except Exception as e: self.logger.exception(f"Failed to process a message: {e}, session: {session_id}") except asyncio.CancelledError: if self.trace_enabled: self.logger.debug(f"The running process_messages task for {session_id} is now cancelled") raise async def process_message(self): raw_message = await self.message_queue.get() if raw_message is not None: message: dict = {} if raw_message.startswith("{"): message = json.loads(raw_message) _: Future[None] = asyncio.ensure_future(self.run_message_listeners(message, raw_message)) async def run_message_listeners(self, message: dict, raw_message: str) -> None: session_id = await self.session_id() type, envelope_id = message.get("type"), message.get("envelope_id") if self.logger.level <= logging.DEBUG: self.logger.debug( f"Message processing started (type: {type}, envelope_id: {envelope_id}, session: {session_id})" ) try: if message.get("type") == "disconnect": await self.connect_to_new_endpoint(force=True) return for listener in self.message_listeners: try: await listener(self, message, raw_message) # type: ignore except Exception as e: self.logger.exception(f"Failed to run a message listener: {e}, session: {session_id}") if len(self.socket_mode_request_listeners) > 0: request = SocketModeRequest.from_dict(message) if request is not None: for listener in self.socket_mode_request_listeners: try: await listener(self, request) # type: ignore except Exception as e: self.logger.exception(f"Failed to run a request listener: {e}, session: {session_id}") except Exception as e: self.logger.exception(f"Failed to run message listeners: {e}, session: {session_id}") finally: if self.logger.level <= logging.DEBUG: self.logger.debug( f"Message processing completed (" f"type: {type}, " f"envelope_id: {envelope_id}, " f"session: {session_id})" )
Subclasses
Class variables
var app_token : str
var auto_reconnect_enabled : bool
var closed : bool
var connect_operation_lock : asyncio.locks.Lock
var logger : logging.Logger
var message_listeners : List[Union[AsyncWebSocketMessageListener, Callable[[AsyncBaseSocketModeClient, dict, Optional[str]], Awaitable[None]]]]
var message_queue : asyncio.queues.Queue
var socket_mode_request_listeners : List[Union[AsyncSocketModeRequestListener, Callable[[AsyncBaseSocketModeClient, SocketModeRequest], Awaitable[None]]]]
var trace_enabled : bool
var web_client : AsyncWebClient
var wss_uri : str
Methods
async def close(self)
-
Expand source code
async def close(self): self.closed = True await self.disconnect()
async def connect(self)
-
Expand source code
async def connect(self): raise NotImplementedError()
async def connect_to_new_endpoint(self, force: bool = False)
-
Expand source code
async def connect_to_new_endpoint(self, force: bool = False): session_id = await self.session_id() try: await self.connect_operation_lock.acquire() if self.trace_enabled: self.logger.debug(f"For reconnection, the connect_operation_lock was acquired (session: {session_id})") if force or not await self.is_connected(): self.wss_uri = await self.issue_new_wss_url() await self.connect() finally: if self.connect_operation_lock.locked() is True: self.connect_operation_lock.release() if self.trace_enabled: self.logger.debug(f"The connect_operation_lock for reconnection was released (session: {session_id})")
async def disconnect(self)
-
Expand source code
async def disconnect(self): raise NotImplementedError()
async def enqueue_message(self, message: str)
-
Expand source code
async def enqueue_message(self, message: str): await self.message_queue.put(message) if self.logger.level <= logging.DEBUG: queue_size = self.message_queue.qsize() session_id = await self.session_id() self.logger.debug(f"A new message enqueued (current queue size: {queue_size}, session: {session_id})")
async def is_connected(self) ‑> bool
-
Expand source code
async def is_connected(self) -> bool: return False
async def issue_new_wss_url(self) ‑> str
-
Expand source code
async def issue_new_wss_url(self) -> str: try: response = await self.web_client.apps_connections_open(app_token=self.app_token) return response["url"] except SlackApiError as e: if e.response["error"] == "ratelimited": # NOTE: ratelimited errors rarely occur with this endpoint delay = int(e.response.headers.get("Retry-After", "30")) # Tier1 self.logger.info(f"Rate limited. Retrying in {delay} seconds...") await asyncio.sleep(delay) # Retry to issue a new WSS URL return await self.issue_new_wss_url() else: # other errors self.logger.error(f"Failed to retrieve WSS URL: {e}") raise e
async def process_message(self)
-
Expand source code
async def process_message(self): raw_message = await self.message_queue.get() if raw_message is not None: message: dict = {} if raw_message.startswith("{"): message = json.loads(raw_message) _: Future[None] = asyncio.ensure_future(self.run_message_listeners(message, raw_message))
async def process_messages(self)
-
Expand source code
async def process_messages(self): session_id = await self.session_id() try: while not self.closed: try: await self.process_message() except asyncio.CancelledError: # if self.closed is True, the connection is already closed # In this case, we can ignore the exception here if not self.closed: raise except Exception as e: self.logger.exception(f"Failed to process a message: {e}, session: {session_id}") except asyncio.CancelledError: if self.trace_enabled: self.logger.debug(f"The running process_messages task for {session_id} is now cancelled") raise
async def run_message_listeners(self, message: dict, raw_message: str) ‑> None
-
Expand source code
async def run_message_listeners(self, message: dict, raw_message: str) -> None: session_id = await self.session_id() type, envelope_id = message.get("type"), message.get("envelope_id") if self.logger.level <= logging.DEBUG: self.logger.debug( f"Message processing started (type: {type}, envelope_id: {envelope_id}, session: {session_id})" ) try: if message.get("type") == "disconnect": await self.connect_to_new_endpoint(force=True) return for listener in self.message_listeners: try: await listener(self, message, raw_message) # type: ignore except Exception as e: self.logger.exception(f"Failed to run a message listener: {e}, session: {session_id}") if len(self.socket_mode_request_listeners) > 0: request = SocketModeRequest.from_dict(message) if request is not None: for listener in self.socket_mode_request_listeners: try: await listener(self, request) # type: ignore except Exception as e: self.logger.exception(f"Failed to run a request listener: {e}, session: {session_id}") except Exception as e: self.logger.exception(f"Failed to run message listeners: {e}, session: {session_id}") finally: if self.logger.level <= logging.DEBUG: self.logger.debug( f"Message processing completed (" f"type: {type}, " f"envelope_id: {envelope_id}, " f"session: {session_id})" )
async def send_message(self, message: str)
-
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async def send_message(self, message: str): raise NotImplementedError()
async def send_socket_mode_response(self, response: Union[Dict[str, Any], SocketModeResponse])
-
Expand source code
async def send_socket_mode_response(self, response: Union[Dict[str, Any], SocketModeResponse]): if isinstance(response, SocketModeResponse): await self.send_message(json.dumps(response.to_dict())) else: await self.send_message(json.dumps(response))
async def session_id(self) ‑> str
-
Expand source code
async def session_id(self) -> str: return ""