Use slack token as alternative to webhook

[nitrocode]

Background

A slack token is the new method of authentication

It allows multiple slack channels and specific scopes.

How

Here's how to hit the API using the token instead of the webhook

https://api.slack.com/tutorials/tracks/posting-messages-with-curl

  # test auth
  auth_test = requests.post(
      'https://slack.com/api/auth.test',
      headers=({'Authorization': f'Bearer {self.slack_token}'})
  ).json()
  # send message
  requests.post(
    'https://slack.com/api/chat.postMessage',
    headers=({'Authorization': f'Bearer {self.slack_token}'}),
    json=payload
  )

Code references

terraform-aws-clickops-notifier/clickopsnotifier/app.py

Lines 57 to 64 in be9694c

	for parameter_name in PARAMETER_NAMES_FOR_SLACK_WEBHOOKS:
	webhook_url = get_webhook_url(parameter_name)
	messenger = Messenger(
	webhook_type="slack",
	webhook_url=webhook_url,
	parameter_name=parameter_name,
	)
	_MESSENGERS.append(messenger)

terraform-aws-clickops-notifier/clickopsnotifier/messenger.py

Lines 10 to 15 in be9694c

	def __init__(
	self, webhook_type: str, webhook_url: str, parameter_name: str
	) -> None:
	self.webhook_url = webhook_url
	if self.webhook_url is None:
	raise ValueError("webhook_url cannot be None")

terraform-aws-clickops-notifier/clickopsnotifier/messenger.py

Line 63 in be9694c

response = requests.post(self.webhook_url, json=payload)

Related to #76