mirror of
https://github.com/morpheus65535/bazarr
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319 lines
10 KiB
Python
319 lines
10 KiB
Python
# -*- coding: utf-8 -*-
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#
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# Slack Notify Wrapper
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#
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# Copyright (C) 2017-2018 Chris Caron <lead2gold@gmail.com>
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#
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# This file is part of apprise.
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#
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# This program is free software; you can redistribute it and/or modify it
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# under the terms of the GNU Lesser General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Lesser General Public License for more details.
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# To use this plugin, you need to first access https://api.slack.com
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# Specifically https://my.slack.com/services/new/incoming-webhook/
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# to create a new incoming webhook for your account. You'll need to
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# follow the wizard to pre-determine the channel(s) you want your
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# message to broadcast to, and when you're complete, you will
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# recieve a URL that looks something like this:
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# https://hooks.slack.com/services/T1JJ3T3L2/A1BRTD4JD/TIiajkdnlazkcOXrIdevi7FQ
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# ^ ^ ^
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# | | |
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# These are important <--------------^---------^---------------^
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#
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#
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import re
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import requests
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from json import dumps
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from time import time
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from .NotifyBase import NotifyBase
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from .NotifyBase import HTTP_ERROR_MAP
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from ..common import NotifyImageSize
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from ..utils import compat_is_basestring
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# Token required as part of the API request
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# /AAAAAAAAA/........./........................
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VALIDATE_TOKEN_A = re.compile(r'[A-Z0-9]{9}')
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# Token required as part of the API request
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# /........./BBBBBBBBB/........................
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VALIDATE_TOKEN_B = re.compile(r'[A-Z0-9]{9}')
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# Token required as part of the API request
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# /........./........./CCCCCCCCCCCCCCCCCCCCCCCC
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VALIDATE_TOKEN_C = re.compile(r'[A-Za-z0-9]{24}')
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# Default User
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SLACK_DEFAULT_USER = 'apprise'
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# Extend HTTP Error Messages
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SLACK_HTTP_ERROR_MAP = HTTP_ERROR_MAP.copy()
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SLACK_HTTP_ERROR_MAP.update({
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401: 'Unauthorized - Invalid Token.',
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})
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# Used to break path apart into list of channels
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CHANNEL_LIST_DELIM = re.compile(r'[ \t\r\n,#\\/]+')
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# Used to detect a channel
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IS_CHANNEL_RE = re.compile(r'[+#@]?([A-Z0-9_]{1,32})', re.I)
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class NotifySlack(NotifyBase):
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"""
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A wrapper for Slack Notifications
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"""
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# The default secure protocol
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secure_protocol = 'slack'
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# Slack uses the http protocol with JSON requests
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notify_url = 'https://hooks.slack.com/services'
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# Allows the user to specify the NotifyImageSize object
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image_size = NotifyImageSize.XY_72
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# The maximum allowable characters allowed in the body per message
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body_maxlen = 1000
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def __init__(self, token_a, token_b, token_c, channels, **kwargs):
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"""
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Initialize Slack Object
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"""
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super(NotifySlack, self).__init__(**kwargs)
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if not VALIDATE_TOKEN_A.match(token_a.strip()):
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self.logger.warning(
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'The first API Token specified (%s) is invalid.' % token_a,
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)
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raise TypeError(
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'The first API Token specified (%s) is invalid.' % token_a,
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)
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# The token associated with the account
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self.token_a = token_a.strip()
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if not VALIDATE_TOKEN_B.match(token_b.strip()):
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self.logger.warning(
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'The second API Token specified (%s) is invalid.' % token_b,
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)
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raise TypeError(
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'The second API Token specified (%s) is invalid.' % token_b,
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)
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# The token associated with the account
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self.token_b = token_b.strip()
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if not VALIDATE_TOKEN_C.match(token_c.strip()):
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self.logger.warning(
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'The third API Token specified (%s) is invalid.' % token_c,
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)
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raise TypeError(
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'The third API Token specified (%s) is invalid.' % token_c,
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)
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# The token associated with the account
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self.token_c = token_c.strip()
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if not self.user:
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self.logger.warning(
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'No user was specified; using %s.' % SLACK_DEFAULT_USER)
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self.user = SLACK_DEFAULT_USER
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if compat_is_basestring(channels):
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self.channels = [x for x in filter(bool, CHANNEL_LIST_DELIM.split(
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channels,
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))]
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elif isinstance(channels, (set, tuple, list)):
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self.channels = channels
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else:
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self.channels = list()
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if len(self.channels) == 0:
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self.logger.warning('No channel(s) were specified.')
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raise TypeError('No channel(s) were specified.')
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# Formatting requirements are defined here:
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# https://api.slack.com/docs/message-formatting
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self._re_formatting_map = {
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# New lines must become the string version
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r'\r\*\n': '\\n',
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# Escape other special characters
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r'&': '&',
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r'<': '<',
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r'>': '>',
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}
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# Iterate over above list and store content accordingly
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self._re_formatting_rules = re.compile(
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r'(' + '|'.join(self._re_formatting_map.keys()) + r')',
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re.IGNORECASE,
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)
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def notify(self, title, body, notify_type, **kwargs):
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"""
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Perform Slack Notification
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"""
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headers = {
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'User-Agent': self.app_id,
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'Content-Type': 'application/json',
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}
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# error tracking (used for function return)
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notify_okay = True
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# Perform Formatting
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title = self._re_formatting_rules.sub( # pragma: no branch
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lambda x: self._re_formatting_map[x.group()], title,
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)
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body = self._re_formatting_rules.sub( # pragma: no branch
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lambda x: self._re_formatting_map[x.group()], body,
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)
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url = '%s/%s/%s/%s' % (
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self.notify_url,
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self.token_a,
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self.token_b,
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self.token_c,
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)
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image_url = self.image_url(notify_type)
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# Create a copy of the channel list
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channels = list(self.channels)
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while len(channels):
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channel = channels.pop(0)
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if not IS_CHANNEL_RE.match(channel):
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self.logger.warning(
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"The specified channel '%s' is invalid; skipping." % (
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channel,
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)
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)
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continue
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if len(channel) > 1 and channel[0] == '+':
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# Treat as encoded id if prefixed with a +
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_channel = channel[1:]
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elif len(channel) > 1 and channel[0] == '@':
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# Treat @ value 'as is'
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_channel = channel
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else:
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# Prefix with channel hash tag
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_channel = '#%s' % channel
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# prepare JSON Object
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payload = {
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'channel': _channel,
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'username': self.user,
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# Use Markdown language
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'mrkdwn': True,
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'attachments': [{
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'title': title,
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'text': body,
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'color': self.color(notify_type),
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# Time
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'ts': time(),
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'footer': self.app_id,
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}],
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}
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if image_url:
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payload['attachments'][0]['footer_icon'] = image_url
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self.logger.debug('Slack POST URL: %s (cert_verify=%r)' % (
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url, self.verify_certificate,
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))
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self.logger.debug('Slack Payload: %s' % str(payload))
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try:
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r = requests.post(
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url,
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data=dumps(payload),
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headers=headers,
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verify=self.verify_certificate,
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)
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if r.status_code != requests.codes.ok:
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# We had a problem
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try:
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self.logger.warning(
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'Failed to send Slack:%s '
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'notification: %s (error=%s).' % (
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channel,
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SLACK_HTTP_ERROR_MAP[r.status_code],
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r.status_code))
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except KeyError:
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self.logger.warning(
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'Failed to send Slack:%s '
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'notification (error=%s).' % (
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channel,
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r.status_code))
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# self.logger.debug('Response Details: %s' % r.raw.read())
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# Return; we're done
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notify_okay = False
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else:
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self.logger.info('Sent Slack notification.')
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except requests.RequestException as e:
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self.logger.warning(
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'A Connection error occured sending Slack:%s ' % (
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channel) + 'notification.'
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)
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self.logger.debug('Socket Exception: %s' % str(e))
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notify_okay = False
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if len(channels):
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# Prevent thrashing requests
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self.throttle()
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return notify_okay
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@staticmethod
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def parse_url(url):
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"""
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Parses the URL and returns enough arguments that can allow
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us to substantiate this object.
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"""
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results = NotifyBase.parse_url(url)
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if not results:
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# We're done early as we couldn't load the results
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return results
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# Apply our settings now
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# The first token is stored in the hostname
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token_a = results['host']
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# Now fetch the remaining tokens
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try:
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token_b, token_c = [x for x in filter(
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bool, NotifyBase.split_path(results['fullpath']))][0:2]
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except (ValueError, AttributeError, IndexError):
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# We're done
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return None
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channels = [x for x in filter(
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bool, NotifyBase.split_path(results['fullpath']))][2:]
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results['token_a'] = token_a
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results['token_b'] = token_b
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results['token_c'] = token_c
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results['channels'] = channels
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return results
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