# -*- coding: utf-8 -*-
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from slackclient import SlackClient
from airflow.hooks.base_hook import BaseHook
from airflow.exceptions import AirflowException
[docs]class SlackHook(BaseHook):
"""
Interact with Slack, using slackclient library.
"""
def __init__(self, token=None, slack_conn_id=None):
"""
Takes both Slack API token directly and connection that has Slack API token.
If both supplied, Slack API token will be used.
:param token: Slack API token
:type token: string
:param slack_conn_id: connection that has Slack API token in the password field
:type slack_conn_id: string
"""
self.token = self.__get_token(token, slack_conn_id)
def __get_token(self, token, slack_conn_id):
if token is not None:
return token
elif slack_conn_id is not None:
conn = self.get_connection(slack_conn_id)
if not getattr(conn, 'password', None):
raise AirflowException('Missing token(password) in Slack connection')
return conn.password
else:
raise AirflowException('Cannot get token: '
'No valid Slack token nor slack_conn_id supplied.')
def call(self, method, api_params):
sc = SlackClient(self.token)
rc = sc.api_call(method, **api_params)
if not rc['ok']:
msg = "Slack API call failed ({})".format(rc['error'])
raise AirflowException(msg)