############### Message to Slack Service ###############
Rate Limiting:
- Slack allows applications to send no more than one message per channel per second.
- However, they do allow bursts over that limit for a short period of time.
- Rate limiting results in a 429 response
import os
import time
from slack_sdk import WebClient
from slack_sdk.errors import SlackApiError
client = WebClient(token=os.environ["SLACK_BOT_TOKEN"])
# Simple wrapper for sending a Slack message
def send_slack_message(channel, message):
return client.chat_postMessage(
channel=channel,
text=message
)
# Make the API call and save results to `response`
channel = "#random"
message = "Hello, from Python!"
# Do until being rate limited
while True:
try:
response = send_slack_message(channel, message)
except SlackApiError as e:
if e.response.status_code == 429:
# The `Retry-After` header will tell you how long to wait before retrying
delay = int(e.response.headers['Retry-After'])
print(f"Rate limited. Retrying in {delay} seconds")
time.sleep(delay)
response = send_slack_message(channel, message)
else:
# other errors
raise eHowever, there are better error handling docs here(https://api.slack.com/docs/rate-limits)