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370 lines
12 KiB
370 lines
12 KiB
# -*- coding: utf-8 -*-
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# BSD 3-Clause License
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#
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# Apprise - Push Notification Library.
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# Copyright (c) 2023, Chris Caron <lead2gold@gmail.com>
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are met:
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#
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# 1. Redistributions of source code must retain the above copyright notice,
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# this list of conditions and the following disclaimer.
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#
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# 2. Redistributions in binary form must reproduce the above copyright notice,
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# this list of conditions and the following disclaimer in the documentation
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# and/or other materials provided with the distribution.
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#
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# 3. Neither the name of the copyright holder nor the names of its
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# contributors may be used to endorse or promote products derived from
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# this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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# For this to work correctly you need to create a webhook. You'll also
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# need a GSuite account (there are free trials if you don't have one)
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#
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# - Open Google Chat in your browser:
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# Link: https://chat.google.com/
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# - Go to the room to which you want to add a bot.
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# - From the room menu at the top of the page, select Manage webhooks.
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# - Provide it a name and optional avatar and click SAVE
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# - Copy the URL listed next to your new webhook in the Webhook URL column.
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# - Click outside the dialog box to close.
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#
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# When you've completed, you'll get a URL that looks a little like this:
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# https://chat.googleapis.com/v1/spaces/AAAAk6lGXyM/\
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# messages?key=AIzaSyDdI0hCZtE6vySjMm-WEfRq3CPzqKqqsHI&\
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# token=O7b1nyri_waOpLMSzbFILAGRzgtQofPW71fEEXKcyFk%3D
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#
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# Simplified, it looks like this:
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# https://chat.googleapis.com/v1/spaces/WORKSPACE/messages?\
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# key=WEBHOOK_KEY&token=WEBHOOK_TOKEN
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#
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# This plugin will simply work using the url of:
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# gchat://WORKSPACE/WEBHOOK_KEY/WEBHOOK_TOKEN
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#
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# API Documentation on Webhooks:
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# - https://developers.google.com/hangouts/chat/quickstart/\
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# incoming-bot-python
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# - https://developers.google.com/hangouts/chat/reference/rest
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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 .NotifyBase import NotifyBase
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from ..common import NotifyFormat
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from ..common import NotifyType
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from ..utils import validate_regex
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from ..AppriseLocale import gettext_lazy as _
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class NotifyGoogleChat(NotifyBase):
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"""
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A wrapper to Google Chat Notifications
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"""
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# The default descriptive name associated with the Notification
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service_name = 'Google Chat'
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# The services URL
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service_url = 'https://chat.google.com/'
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# The default secure protocol
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secure_protocol = 'gchat'
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# A URL that takes you to the setup/help of the specific protocol
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setup_url = 'https://github.com/caronc/apprise/wiki/Notify_googlechat'
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# Google Chat Webhook
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notify_url = 'https://chat.googleapis.com/v1/spaces/{workspace}/messages'
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# Default Notify Format
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notify_format = NotifyFormat.MARKDOWN
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# A title can not be used for Google Chat Messages. Setting this to zero
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# will cause any title (if defined) to get placed into the message body.
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title_maxlen = 0
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# The maximum allowable characters allowed in the body per message
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body_maxlen = 4000
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# Define object templates
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templates = (
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'{schema}://{workspace}/{webhook_key}/{webhook_token}',
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'{schema}://{workspace}/{webhook_key}/{webhook_token}/{thread_key}',
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)
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# Define our template tokens
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template_tokens = dict(NotifyBase.template_tokens, **{
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'workspace': {
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'name': _('Workspace'),
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'type': 'string',
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'private': True,
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'required': True,
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},
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'webhook_key': {
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'name': _('Webhook Key'),
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'type': 'string',
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'private': True,
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'required': True,
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},
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'webhook_token': {
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'name': _('Webhook Token'),
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'type': 'string',
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'private': True,
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'required': True,
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},
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'thread_key': {
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'name': _('Thread Key'),
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'type': 'string',
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'private': True,
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},
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})
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# Define our template arguments
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template_args = dict(NotifyBase.template_args, **{
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'workspace': {
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'alias_of': 'workspace',
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},
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'key': {
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'alias_of': 'webhook_key',
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},
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'token': {
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'alias_of': 'webhook_token',
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},
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'thread': {
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'alias_of': 'thread_key',
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},
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})
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def __init__(self, workspace, webhook_key, webhook_token,
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thread_key=None, **kwargs):
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"""
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Initialize Google Chat Object
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"""
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super().__init__(**kwargs)
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# Workspace (associated with project)
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self.workspace = validate_regex(workspace)
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if not self.workspace:
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msg = 'An invalid Google Chat Workspace ' \
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'({}) was specified.'.format(workspace)
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self.logger.warning(msg)
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raise TypeError(msg)
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# Webhook Key (associated with project)
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self.webhook_key = validate_regex(webhook_key)
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if not self.webhook_key:
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msg = 'An invalid Google Chat Webhook Key ' \
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'({}) was specified.'.format(webhook_key)
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self.logger.warning(msg)
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raise TypeError(msg)
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# Webhook Token (associated with project)
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self.webhook_token = validate_regex(webhook_token)
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if not self.webhook_token:
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msg = 'An invalid Google Chat Webhook Token ' \
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'({}) was specified.'.format(webhook_token)
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self.logger.warning(msg)
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raise TypeError(msg)
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if thread_key:
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self.thread_key = validate_regex(thread_key)
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if not self.thread_key:
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msg = 'An invalid Google Chat Thread Key ' \
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'({}) was specified.'.format(thread_key)
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self.logger.warning(msg)
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raise TypeError(msg)
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else:
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self.thread_key = None
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return
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def send(self, body, title='', notify_type=NotifyType.INFO, **kwargs):
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"""
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Perform Google Chat Notification
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"""
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# Our headers
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headers = {
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'User-Agent': self.app_id,
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'Content-Type': 'application/json; charset=utf-8',
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}
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payload = {
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# Our Message
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'text': body,
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}
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# Construct Notify URL
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notify_url = self.notify_url.format(
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workspace=self.workspace,
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)
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params = {
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# Prepare our URL Parameters
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'token': self.webhook_token,
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'key': self.webhook_key,
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}
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if self.thread_key:
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params['threadKey'] = self.thread_key
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self.logger.debug('Google Chat POST URL: %s (cert_verify=%r)' % (
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notify_url, self.verify_certificate,
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))
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self.logger.debug('Google Chat Parameters: %s' % str(params))
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self.logger.debug('Google Chat Payload: %s' % str(payload))
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# Always call throttle before any remote server i/o is made
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self.throttle()
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try:
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r = requests.post(
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notify_url,
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params=params,
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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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timeout=self.request_timeout,
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)
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if r.status_code not in (
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requests.codes.ok, requests.codes.no_content):
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# We had a problem
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status_str = \
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NotifyBase.http_response_code_lookup(r.status_code)
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self.logger.warning(
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'Failed to send Google Chat notification: '
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'{}{}error={}.'.format(
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status_str,
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', ' if status_str else '',
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r.status_code))
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self.logger.debug('Response Details:\r\n{}'.format(r.content))
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# Return; we're done
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return False
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else:
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self.logger.info('Sent Google Chat notification.')
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except requests.RequestException as e:
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self.logger.warning(
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'A Connection error occurred postingto Google Chat.')
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self.logger.debug('Socket Exception: %s' % str(e))
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return False
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return True
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def url(self, privacy=False, *args, **kwargs):
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"""
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Returns the URL built dynamically based on specified arguments.
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"""
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# Set our parameters
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params = self.url_parameters(privacy=privacy, *args, **kwargs)
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return '{schema}://{workspace}/{key}/{token}/{thread}?{params}'.format(
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schema=self.secure_protocol,
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workspace=self.pprint(self.workspace, privacy, safe=''),
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key=self.pprint(self.webhook_key, privacy, safe=''),
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token=self.pprint(self.webhook_token, privacy, safe=''),
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thread='' if not self.thread_key
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else self.pprint(self.thread_key, privacy, safe=''),
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params=NotifyGoogleChat.urlencode(params),
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)
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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 re-instantiate this object.
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Syntax:
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gchat://workspace/webhook_key/webhook_token
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gchat://workspace/webhook_key/webhook_token/thread_key
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"""
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results = NotifyBase.parse_url(url, verify_host=False)
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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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# Store our Workspace
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results['workspace'] = NotifyGoogleChat.unquote(results['host'])
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# Acquire our tokens
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tokens = NotifyGoogleChat.split_path(results['fullpath'])
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# Store our Webhook Key
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results['webhook_key'] = tokens.pop(0) if tokens else None
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# Store our Webhook Token
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results['webhook_token'] = tokens.pop(0) if tokens else None
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# Store our Thread Key
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results['thread_key'] = tokens.pop(0) if tokens else None
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# Support arguments as overrides (if specified)
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if 'workspace' in results['qsd']:
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results['workspace'] = \
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NotifyGoogleChat.unquote(results['qsd']['workspace'])
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if 'key' in results['qsd']:
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results['webhook_key'] = \
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NotifyGoogleChat.unquote(results['qsd']['key'])
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if 'token' in results['qsd']:
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results['webhook_token'] = \
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NotifyGoogleChat.unquote(results['qsd']['token'])
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if 'thread' in results['qsd']:
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results['thread_key'] = \
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NotifyGoogleChat.unquote(results['qsd']['thread'])
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elif 'threadkey' in results['qsd']:
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# Support Google Chat's Thread Key (if set)
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# keys are always made lowercase; so check above is attually
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# testing threadKey successfully as well
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results['thread_key'] = \
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NotifyGoogleChat.unquote(results['qsd']['threadkey'])
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return results
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@staticmethod
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def parse_native_url(url):
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"""
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Support
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https://chat.googleapis.com/v1/spaces/{workspace}/messages
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'?key={key}&token={token}
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https://chat.googleapis.com/v1/spaces/{workspace}/messages
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'?key={key}&token={token}&threadKey={thread}
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"""
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result = re.match(
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r'^https://chat\.googleapis\.com/v1/spaces/'
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r'(?P<workspace>[A-Z0-9_-]+)/messages/*(?P<params>.+)$',
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url, re.I)
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if result:
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return NotifyGoogleChat.parse_url(
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'{schema}://{workspace}/{params}'.format(
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schema=NotifyGoogleChat.secure_protocol,
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workspace=result.group('workspace'),
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params=result.group('params')))
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return None
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