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from airflow.operators.http_operator import SimpleHttpOperator
from airflow.utils.decorators import apply_defaults
from airflow.contrib.hooks.slack_webhook_hook import SlackWebhookHook
[docs]class SlackWebhookOperator(SimpleHttpOperator):
"""
This operator allows you to post messages to Slack using incoming webhooks.
Takes both Slack webhook token directly and connection that has Slack webhook token.
If both supplied, http_conn_id will be used as base_url,
and webhook_token will be taken as endpoint, the relative path of the url.
Each Slack webhook token can be pre-configured to use a specific channel, username and
icon. You can override these defaults in this hook.
:param http_conn_id: connection that has Slack webhook token in the extra field
:type http_conn_id: str
:param webhook_token: Slack webhook token
:type webhook_token: str
:param message: The message you want to send on Slack
:type message: str
:param attachments: The attachments to send on Slack. Should be a list of
dictionaries representing Slack attachments.
:type attachments: list
:param channel: The channel the message should be posted to
:type channel: str
:param username: The username to post to slack with
:type username: str
:param icon_emoji: The emoji to use as icon for the user posting to Slack
:type icon_emoji: str
:param icon_url: The icon image URL string to use in place of the default icon.
:type icon_url: str
:param link_names: Whether or not to find and link channel and usernames in your
message
:type link_names: bool
:param proxy: Proxy to use to make the Slack webhook call
:type proxy: str
"""
[docs] template_fields = ['webhook_token', 'message', 'attachments', 'channel',
'username', 'proxy', ]
@apply_defaults
def __init__(self,
http_conn_id=None,
webhook_token=None,
message="",
attachments=None,
channel=None,
username=None,
icon_emoji=None,
icon_url=None,
link_names=False,
proxy=None,
*args,
**kwargs):
super(SlackWebhookOperator, self).__init__(endpoint=webhook_token,
*args,
**kwargs)
self.http_conn_id = http_conn_id
self.webhook_token = webhook_token
self.message = message
self.attachments = attachments
self.channel = channel
self.username = username
self.icon_emoji = icon_emoji
self.icon_url = icon_url
self.link_names = link_names
self.proxy = proxy
self.hook = None
[docs] def execute(self, context):
"""
Call the SlackWebhookHook to post the provided Slack message
"""
self.hook = SlackWebhookHook(
self.http_conn_id,
self.webhook_token,
self.message,
self.attachments,
self.channel,
self.username,
self.icon_emoji,
self.icon_url,
self.link_names,
self.proxy
)
self.hook.execute()