Module slack_sdk.socket_mode.client
Expand source code
import json
import logging
import time
from queue import Queue, Empty
from concurrent.futures.thread import ThreadPoolExecutor
from logging import Logger
from threading import Lock
from typing import Dict, Union, Any, Optional, List, Callable
from slack_sdk.errors import SlackApiError
from slack_sdk.socket_mode.interval_runner import IntervalRunner
from slack_sdk.socket_mode.listeners import (
WebSocketMessageListener,
SocketModeRequestListener,
)
from slack_sdk.socket_mode.request import SocketModeRequest
from slack_sdk.socket_mode.response import SocketModeResponse
from slack_sdk.web import WebClient
class BaseSocketModeClient:
logger: Logger
web_client: WebClient
app_token: str
wss_uri: str
message_queue: Queue
message_listeners: List[
Union[
WebSocketMessageListener,
Callable[["BaseSocketModeClient", dict, Optional[str]], None],
]
]
socket_mode_request_listeners: List[
Union[
SocketModeRequestListener,
Callable[["BaseSocketModeClient", SocketModeRequest], None],
]
]
message_processor: IntervalRunner
message_workers: ThreadPoolExecutor
closed: bool
connect_operation_lock: Lock
def issue_new_wss_url(self) -> str:
try:
response = 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...")
time.sleep(delay)
# Retry to issue a new WSS URL
return self.issue_new_wss_url()
else:
# other errors
self.logger.error(f"Failed to retrieve WSS URL: {e}")
raise e
def is_connected(self) -> bool:
return False
def connect(self) -> None:
raise NotImplementedError()
def disconnect(self) -> None:
raise NotImplementedError()
def connect_to_new_endpoint(self, force: bool = False):
try:
self.connect_operation_lock.acquire(blocking=True, timeout=5)
if force or not self.is_connected():
self.logger.info("Connecting to a new endpoint...")
self.wss_uri = self.issue_new_wss_url()
self.connect()
self.logger.info("Connected to a new endpoint...")
finally:
self.connect_operation_lock.release()
def close(self) -> None:
self.closed = True
self.disconnect()
def send_message(self, message: str) -> None:
raise NotImplementedError()
def send_socket_mode_response(self, response: Union[Dict[str, Any], SocketModeResponse]) -> None:
if isinstance(response, SocketModeResponse):
self.send_message(json.dumps(response.to_dict()))
else:
self.send_message(json.dumps(response))
def enqueue_message(self, message: str):
self.message_queue.put(message)
if self.logger.level <= logging.DEBUG:
self.logger.debug(f"A new message enqueued (current queue size: {self.message_queue.qsize()})")
def process_message(self):
try:
raw_message = self.message_queue.get(timeout=1)
if self.logger.level <= logging.DEBUG:
self.logger.debug(f"A message dequeued (current queue size: {self.message_queue.qsize()})")
if raw_message is not None:
message: dict = {}
if raw_message.startswith("{"):
message = json.loads(raw_message)
if message.get("type") == "disconnect":
self.connect_to_new_endpoint(force=True)
else:
def _run_message_listeners():
self.run_message_listeners(message, raw_message)
self.message_workers.submit(_run_message_listeners)
except Empty:
pass
def run_message_listeners(self, message: dict, raw_message: str) -> None:
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})")
try:
# just in case, adding the same logic to reconnect here
if message.get("type") == "disconnect":
self.connect_to_new_endpoint(force=True)
return
for listener in self.message_listeners:
try:
listener(self, message, raw_message) # type: ignore
except Exception as e:
self.logger.exception(f"Failed to run a message listener: {e}")
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:
listener(self, request) # type: ignore
except Exception as e:
self.logger.exception(f"Failed to run a request listener: {e}")
except Exception as e:
self.logger.exception(f"Failed to run message listeners: {e}")
finally:
if self.logger.level <= logging.DEBUG:
self.logger.debug(f"Message processing completed (type: {type}, envelope_id: {envelope_id})")
def process_messages(self) -> None:
while not self.closed:
try:
self.process_message()
except Exception as e:
self.logger.exception(f"Failed to process a message: {e}")
Classes
class BaseSocketModeClient
-
Expand source code
class BaseSocketModeClient: logger: Logger web_client: WebClient app_token: str wss_uri: str message_queue: Queue message_listeners: List[ Union[ WebSocketMessageListener, Callable[["BaseSocketModeClient", dict, Optional[str]], None], ] ] socket_mode_request_listeners: List[ Union[ SocketModeRequestListener, Callable[["BaseSocketModeClient", SocketModeRequest], None], ] ] message_processor: IntervalRunner message_workers: ThreadPoolExecutor closed: bool connect_operation_lock: Lock def issue_new_wss_url(self) -> str: try: response = 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...") time.sleep(delay) # Retry to issue a new WSS URL return self.issue_new_wss_url() else: # other errors self.logger.error(f"Failed to retrieve WSS URL: {e}") raise e def is_connected(self) -> bool: return False def connect(self) -> None: raise NotImplementedError() def disconnect(self) -> None: raise NotImplementedError() def connect_to_new_endpoint(self, force: bool = False): try: self.connect_operation_lock.acquire(blocking=True, timeout=5) if force or not self.is_connected(): self.logger.info("Connecting to a new endpoint...") self.wss_uri = self.issue_new_wss_url() self.connect() self.logger.info("Connected to a new endpoint...") finally: self.connect_operation_lock.release() def close(self) -> None: self.closed = True self.disconnect() def send_message(self, message: str) -> None: raise NotImplementedError() def send_socket_mode_response(self, response: Union[Dict[str, Any], SocketModeResponse]) -> None: if isinstance(response, SocketModeResponse): self.send_message(json.dumps(response.to_dict())) else: self.send_message(json.dumps(response)) def enqueue_message(self, message: str): self.message_queue.put(message) if self.logger.level <= logging.DEBUG: self.logger.debug(f"A new message enqueued (current queue size: {self.message_queue.qsize()})") def process_message(self): try: raw_message = self.message_queue.get(timeout=1) if self.logger.level <= logging.DEBUG: self.logger.debug(f"A message dequeued (current queue size: {self.message_queue.qsize()})") if raw_message is not None: message: dict = {} if raw_message.startswith("{"): message = json.loads(raw_message) if message.get("type") == "disconnect": self.connect_to_new_endpoint(force=True) else: def _run_message_listeners(): self.run_message_listeners(message, raw_message) self.message_workers.submit(_run_message_listeners) except Empty: pass def run_message_listeners(self, message: dict, raw_message: str) -> None: 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})") try: # just in case, adding the same logic to reconnect here if message.get("type") == "disconnect": self.connect_to_new_endpoint(force=True) return for listener in self.message_listeners: try: listener(self, message, raw_message) # type: ignore except Exception as e: self.logger.exception(f"Failed to run a message listener: {e}") 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: listener(self, request) # type: ignore except Exception as e: self.logger.exception(f"Failed to run a request listener: {e}") except Exception as e: self.logger.exception(f"Failed to run message listeners: {e}") finally: if self.logger.level <= logging.DEBUG: self.logger.debug(f"Message processing completed (type: {type}, envelope_id: {envelope_id})") def process_messages(self) -> None: while not self.closed: try: self.process_message() except Exception as e: self.logger.exception(f"Failed to process a message: {e}")
Subclasses
Class variables
var app_token : str
var closed : bool
var connect_operation_lock :
var logger : logging.Logger
var message_listeners : List[Union[WebSocketMessageListener, Callable[[BaseSocketModeClient, dict, Optional[str]], None]]]
var message_processor : IntervalRunner
var message_queue : queue.Queue
var message_workers : concurrent.futures.thread.ThreadPoolExecutor
var socket_mode_request_listeners : List[Union[SocketModeRequestListener, Callable[[BaseSocketModeClient, SocketModeRequest], None]]]
var web_client : WebClient
var wss_uri : str
Methods
def close(self) ‑> None
-
Expand source code
def close(self) -> None: self.closed = True self.disconnect()
def connect(self) ‑> None
-
Expand source code
def connect(self) -> None: raise NotImplementedError()
def connect_to_new_endpoint(self, force: bool = False)
-
Expand source code
def connect_to_new_endpoint(self, force: bool = False): try: self.connect_operation_lock.acquire(blocking=True, timeout=5) if force or not self.is_connected(): self.logger.info("Connecting to a new endpoint...") self.wss_uri = self.issue_new_wss_url() self.connect() self.logger.info("Connected to a new endpoint...") finally: self.connect_operation_lock.release()
def disconnect(self) ‑> None
-
Expand source code
def disconnect(self) -> None: raise NotImplementedError()
def enqueue_message(self, message: str)
-
Expand source code
def enqueue_message(self, message: str): self.message_queue.put(message) if self.logger.level <= logging.DEBUG: self.logger.debug(f"A new message enqueued (current queue size: {self.message_queue.qsize()})")
def is_connected(self) ‑> bool
-
Expand source code
def is_connected(self) -> bool: return False
def issue_new_wss_url(self) ‑> str
-
Expand source code
def issue_new_wss_url(self) -> str: try: response = 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...") time.sleep(delay) # Retry to issue a new WSS URL return self.issue_new_wss_url() else: # other errors self.logger.error(f"Failed to retrieve WSS URL: {e}") raise e
def process_message(self)
-
Expand source code
def process_message(self): try: raw_message = self.message_queue.get(timeout=1) if self.logger.level <= logging.DEBUG: self.logger.debug(f"A message dequeued (current queue size: {self.message_queue.qsize()})") if raw_message is not None: message: dict = {} if raw_message.startswith("{"): message = json.loads(raw_message) if message.get("type") == "disconnect": self.connect_to_new_endpoint(force=True) else: def _run_message_listeners(): self.run_message_listeners(message, raw_message) self.message_workers.submit(_run_message_listeners) except Empty: pass
def process_messages(self) ‑> None
-
Expand source code
def process_messages(self) -> None: while not self.closed: try: self.process_message() except Exception as e: self.logger.exception(f"Failed to process a message: {e}")
def run_message_listeners(self, message: dict, raw_message: str) ‑> None
-
Expand source code
def run_message_listeners(self, message: dict, raw_message: str) -> None: 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})") try: # just in case, adding the same logic to reconnect here if message.get("type") == "disconnect": self.connect_to_new_endpoint(force=True) return for listener in self.message_listeners: try: listener(self, message, raw_message) # type: ignore except Exception as e: self.logger.exception(f"Failed to run a message listener: {e}") 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: listener(self, request) # type: ignore except Exception as e: self.logger.exception(f"Failed to run a request listener: {e}") except Exception as e: self.logger.exception(f"Failed to run message listeners: {e}") finally: if self.logger.level <= logging.DEBUG: self.logger.debug(f"Message processing completed (type: {type}, envelope_id: {envelope_id})")
def send_message(self, message: str) ‑> None
-
Expand source code
def send_message(self, message: str) -> None: raise NotImplementedError()
def send_socket_mode_response(self, response: Union[Dict[str, Any], SocketModeResponse]) ‑> None
-
Expand source code
def send_socket_mode_response(self, response: Union[Dict[str, Any], SocketModeResponse]) -> None: if isinstance(response, SocketModeResponse): self.send_message(json.dumps(response.to_dict())) else: self.send_message(json.dumps(response))