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785 lines
27 KiB
Python
785 lines
27 KiB
Python
# -*- coding: utf-8 -*-
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"""
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The MIT License (MIT)
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Copyright (c) 2015-2020 Rapptz
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Permission is hereby granted, free of charge, to any person obtaining a
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copy of this software and associated documentation files (the "Software"),
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to deal in the Software without restriction, including without limitation
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the rights to use, copy, modify, merge, publish, distribute, sublicense,
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and/or sell copies of the Software, and to permit persons to whom the
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Software is furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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DEALINGS IN THE SOFTWARE.
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"""
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import asyncio
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import json
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import time
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import re
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import aiohttp
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from . import utils
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from .errors import InvalidArgument, HTTPException, Forbidden, NotFound
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from .enums import try_enum, WebhookType
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from .user import BaseUser, User
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from .asset import Asset
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__all__ = (
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'WebhookAdapter',
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'AsyncWebhookAdapter',
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'RequestsWebhookAdapter',
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'Webhook',
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)
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class WebhookAdapter:
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"""Base class for all webhook adapters.
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Attributes
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------------
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webhook: :class:`Webhook`
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The webhook that owns this adapter.
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"""
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BASE = 'https://discordapp.com/api/v7'
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def _prepare(self, webhook):
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self._webhook_id = webhook.id
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self._webhook_token = webhook.token
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self._request_url = '{0.BASE}/webhooks/{1}/{2}'.format(self, webhook.id, webhook.token)
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self.webhook = webhook
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def request(self, verb, url, payload=None, multipart=None):
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"""Actually does the request.
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Subclasses must implement this.
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Parameters
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-----------
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verb: :class:`str`
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The HTTP verb to use for the request.
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url: :class:`str`
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The URL to send the request to. This will have
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the query parameters already added to it, if any.
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multipart: Optional[:class:`dict`]
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A dict containing multipart form data to send with
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the request. If a filename is being uploaded, then it will
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be under a ``file`` key which will have a 3-element :class:`tuple`
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denoting ``(filename, file, content_type)``.
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payload: Optional[:class:`dict`]
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The JSON to send with the request, if any.
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"""
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raise NotImplementedError()
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def delete_webhook(self):
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return self.request('DELETE', self._request_url)
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def edit_webhook(self, **payload):
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return self.request('PATCH', self._request_url, payload=payload)
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def handle_execution_response(self, data, *, wait):
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"""Transforms the webhook execution response into something
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more meaningful.
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This is mainly used to convert the data into a :class:`Message`
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if necessary.
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Subclasses must implement this.
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Parameters
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------------
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data
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The data that was returned from the request.
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wait: :class:`bool`
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Whether the webhook execution was asked to wait or not.
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"""
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raise NotImplementedError()
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async def _wrap_coroutine_and_cleanup(self, coro, cleanup):
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try:
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return await coro
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finally:
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cleanup()
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def execute_webhook(self, *, payload, wait=False, file=None, files=None):
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cleanup = None
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if file is not None:
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multipart = {
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'file': (file.filename, file.fp, 'application/octet-stream'),
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'payload_json': utils.to_json(payload)
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}
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data = None
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cleanup = file.close
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files_to_pass = [file]
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elif files is not None:
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multipart = {
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'payload_json': utils.to_json(payload)
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}
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for i, file in enumerate(files):
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multipart['file%i' % i] = (file.filename, file.fp, 'application/octet-stream')
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data = None
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def _anon():
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for f in files:
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f.close()
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cleanup = _anon
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files_to_pass = files
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else:
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data = payload
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multipart = None
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files_to_pass = None
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url = '%s?wait=%d' % (self._request_url, wait)
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maybe_coro = None
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try:
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maybe_coro = self.request('POST', url, multipart=multipart, payload=data, files=files_to_pass)
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finally:
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if maybe_coro is not None and cleanup is not None:
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if not asyncio.iscoroutine(maybe_coro):
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cleanup()
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else:
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maybe_coro = self._wrap_coroutine_and_cleanup(maybe_coro, cleanup)
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# if request raises up there then this should never be `None`
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return self.handle_execution_response(maybe_coro, wait=wait)
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class AsyncWebhookAdapter(WebhookAdapter):
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"""A webhook adapter suited for use with aiohttp.
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.. note::
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You are responsible for cleaning up the client session.
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Parameters
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-----------
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session: :class:`aiohttp.ClientSession`
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The session to use to send requests.
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"""
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def __init__(self, session):
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self.session = session
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self.loop = asyncio.get_event_loop()
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async def request(self, verb, url, payload=None, multipart=None, *, files=None):
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headers = {}
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data = None
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files = files or []
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if payload:
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headers['Content-Type'] = 'application/json'
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data = utils.to_json(payload)
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if multipart:
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data = aiohttp.FormData()
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for key, value in multipart.items():
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if key.startswith('file'):
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data.add_field(key, value[1], filename=value[0], content_type=value[2])
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else:
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data.add_field(key, value)
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for tries in range(5):
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for file in files:
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file.reset(seek=tries)
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async with self.session.request(verb, url, headers=headers, data=data) as r:
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# Coerce empty strings to return None for hygiene purposes
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response = (await r.text(encoding='utf-8')) or None
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if r.headers['Content-Type'] == 'application/json':
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response = json.loads(response)
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# check if we have rate limit header information
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remaining = r.headers.get('X-Ratelimit-Remaining')
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if remaining == '0' and r.status != 429:
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delta = utils._parse_ratelimit_header(r)
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await asyncio.sleep(delta)
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if 300 > r.status >= 200:
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return response
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# we are being rate limited
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if r.status == 429:
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retry_after = response['retry_after'] / 1000.0
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await asyncio.sleep(retry_after)
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continue
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if r.status in (500, 502):
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await asyncio.sleep(1 + tries * 2)
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continue
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if r.status == 403:
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raise Forbidden(r, response)
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elif r.status == 404:
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raise NotFound(r, response)
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else:
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raise HTTPException(r, response)
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# no more retries
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raise HTTPException(r, response)
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async def handle_execution_response(self, response, *, wait):
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data = await response
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if not wait:
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return data
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# transform into Message object
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from .message import Message
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return Message(data=data, state=self.webhook._state, channel=self.webhook.channel)
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class RequestsWebhookAdapter(WebhookAdapter):
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"""A webhook adapter suited for use with ``requests``.
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Only versions of :doc:`req:index` higher than 2.13.0 are supported.
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Parameters
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-----------
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session: Optional[`requests.Session <http://docs.python-requests.org/en/latest/api/#requests.Session>`_]
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The requests session to use for sending requests. If not given then
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each request will create a new session. Note if a session is given,
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the webhook adapter **will not** clean it up for you. You must close
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the session yourself.
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sleep: :class:`bool`
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Whether to sleep the thread when encountering a 429 or pre-emptive
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rate limit or a 5xx status code. Defaults to ``True``. If set to
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``False`` then this will raise an :exc:`HTTPException` instead.
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"""
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def __init__(self, session=None, *, sleep=True):
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import requests
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self.session = session or requests
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self.sleep = sleep
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def request(self, verb, url, payload=None, multipart=None, *, files=None):
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headers = {}
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data = None
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files = files or []
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if payload:
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headers['Content-Type'] = 'application/json'
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data = utils.to_json(payload)
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if multipart is not None:
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data = {'payload_json': multipart.pop('payload_json')}
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for tries in range(5):
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for file in files:
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file.reset(seek=tries)
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r = self.session.request(verb, url, headers=headers, data=data, files=multipart)
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r.encoding = 'utf-8'
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# Coerce empty responses to return None for hygiene purposes
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response = r.text or None
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# compatibility with aiohttp
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r.status = r.status_code
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if r.headers['Content-Type'] == 'application/json':
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response = json.loads(response)
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# check if we have rate limit header information
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remaining = r.headers.get('X-Ratelimit-Remaining')
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if remaining == '0' and r.status != 429 and self.sleep:
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delta = utils._parse_ratelimit_header(r)
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time.sleep(delta)
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if 300 > r.status >= 200:
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return response
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# we are being rate limited
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if r.status == 429:
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if self.sleep:
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retry_after = response['retry_after'] / 1000.0
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time.sleep(retry_after)
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continue
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else:
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raise HTTPException(r, response)
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if self.sleep and r.status in (500, 502):
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time.sleep(1 + tries * 2)
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continue
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if r.status == 403:
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raise Forbidden(r, response)
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elif r.status == 404:
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raise NotFound(r, response)
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else:
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raise HTTPException(r, response)
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# no more retries
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raise HTTPException(r, response)
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def handle_execution_response(self, response, *, wait):
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if not wait:
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return response
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# transform into Message object
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from .message import Message
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return Message(data=response, state=self.webhook._state, channel=self.webhook.channel)
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class _FriendlyHttpAttributeErrorHelper:
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__slots__ = ()
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def __getattr__(self, attr):
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raise AttributeError('PartialWebhookState does not support http methods.')
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class _PartialWebhookState:
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__slots__ = ('loop',)
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def __init__(self, adapter):
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# Fetch the loop from the adapter if it's there
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try:
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self.loop = adapter.loop
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except AttributeError:
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self.loop = None
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def _get_guild(self, guild_id):
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return None
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def store_user(self, data):
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return BaseUser(state=self, data=data)
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@property
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def is_bot(self):
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return True
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@property
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def http(self):
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# Some data classes assign state.http and that should be kosher
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# however, using it should result in a late-binding error.
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return _FriendlyHttpAttributeErrorHelper()
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def __getattr__(self, attr):
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raise AttributeError('PartialWebhookState does not support {0!r}.'.format(attr))
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class Webhook:
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"""Represents a Discord webhook.
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Webhooks are a form to send messages to channels in Discord without a
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bot user or authentication.
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There are two main ways to use Webhooks. The first is through the ones
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received by the library such as :meth:`.Guild.webhooks` and
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:meth:`.TextChannel.webhooks`. The ones received by the library will
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automatically have an adapter bound using the library's HTTP session.
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Those webhooks will have :meth:`~.Webhook.send`, :meth:`~.Webhook.delete` and
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:meth:`~.Webhook.edit` as coroutines.
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The second form involves creating a webhook object manually without having
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it bound to a websocket connection using the :meth:`~.Webhook.from_url` or
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:meth:`~.Webhook.partial` classmethods. This form allows finer grained control
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over how requests are done, allowing you to mix async and sync code using either
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:doc:`aiohttp <aio:index>` or :doc:`req:index`.
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For example, creating a webhook from a URL and using :doc:`aiohttp <aio:index>`:
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.. code-block:: python3
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from discord import Webhook, AsyncWebhookAdapter
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import aiohttp
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async def foo():
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async with aiohttp.ClientSession() as session:
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webhook = Webhook.from_url('url-here', adapter=AsyncWebhookAdapter(session))
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await webhook.send('Hello World', username='Foo')
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Or creating a webhook from an ID and token and using :doc:`req:index`:
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.. code-block:: python3
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import requests
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from discord import Webhook, RequestsWebhookAdapter
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webhook = Webhook.partial(123456, 'abcdefg', adapter=RequestsWebhookAdapter())
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webhook.send('Hello World', username='Foo')
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Attributes
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------------
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id: :class:`int`
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The webhook's ID
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type: :class:`WebhookType`
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The type of the webhook.
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.. versionadded:: 1.3
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token: Optional[:class:`str`]
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The authentication token of the webhook. If this is ``None``
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then the webhook cannot be used to make requests.
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guild_id: Optional[:class:`int`]
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The guild ID this webhook is for.
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channel_id: Optional[:class:`int`]
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The channel ID this webhook is for.
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user: Optional[:class:`abc.User`]
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The user this webhook was created by. If the webhook was
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received without authentication then this will be ``None``.
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name: Optional[:class:`str`]
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The default name of the webhook.
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avatar: Optional[:class:`str`]
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The default avatar of the webhook.
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"""
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__slots__ = ('id', 'type', 'guild_id', 'channel_id', 'user', 'name',
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'avatar', 'token', '_state', '_adapter')
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def __init__(self, data, *, adapter, state=None):
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self.id = int(data['id'])
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self.type = try_enum(WebhookType, int(data['type']))
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self.channel_id = utils._get_as_snowflake(data, 'channel_id')
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self.guild_id = utils._get_as_snowflake(data, 'guild_id')
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self.name = data.get('name')
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self.avatar = data.get('avatar')
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self.token = data.get('token')
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self._state = state or _PartialWebhookState(adapter)
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self._adapter = adapter
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self._adapter._prepare(self)
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user = data.get('user')
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if user is None:
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self.user = None
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elif state is None:
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self.user = BaseUser(state=None, data=user)
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else:
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self.user = User(state=state, data=user)
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def __repr__(self):
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return '<Webhook id=%r>' % self.id
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@property
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def url(self):
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"""Returns the webhook's url."""
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return 'https://discordapp.com/api/webhooks/{}/{}'.format(self.id, self.token)
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@classmethod
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def partial(cls, id, token, *, adapter):
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"""Creates a partial :class:`Webhook`.
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A partial webhook is just a webhook object with an ID and a token.
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Parameters
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-----------
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id: :class:`int`
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The ID of the webhook.
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token: :class:`str`
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The authentication token of the webhook.
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adapter: :class:`WebhookAdapter`
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The webhook adapter to use when sending requests. This is
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typically :class:`AsyncWebhookAdapter` for :doc:`aiohttp <aio:index>` or
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:class:`RequestsWebhookAdapter` for :doc:`req:index`.
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"""
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if not isinstance(adapter, WebhookAdapter):
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raise TypeError('adapter must be a subclass of WebhookAdapter')
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data = {
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'id': id,
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'type': 1,
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'token': token
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}
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return cls(data, adapter=adapter)
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@classmethod
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def from_url(cls, url, *, adapter):
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"""Creates a partial :class:`Webhook` from a webhook URL.
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Parameters
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------------
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url: :class:`str`
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The URL of the webhook.
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adapter: :class:`WebhookAdapter`
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The webhook adapter to use when sending requests. This is
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typically :class:`AsyncWebhookAdapter` for :doc:`aiohttp <aio:index>` or
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:class:`RequestsWebhookAdapter` for :doc:`req:index`.
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Raises
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-------
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InvalidArgument
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The URL is invalid.
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"""
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m = re.search(r'discordapp.com/api/webhooks/(?P<id>[0-9]{17,21})/(?P<token>[A-Za-z0-9\.\-\_]{60,68})', url)
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if m is None:
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raise InvalidArgument('Invalid webhook URL given.')
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data = m.groupdict()
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data['type'] = 1
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return cls(data, adapter=adapter)
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@classmethod
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def _as_follower(cls, data, *, channel, user):
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name = "{} #{}".format(channel.guild, channel)
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feed = {
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'id': data['webhook_id'],
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'type': 2,
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'name': name,
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'channel_id': channel.id,
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'guild_id': channel.guild.id,
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'user': {
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'username': user.name,
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'discriminator': user.discriminator,
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'id': user.id,
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'avatar': user.avatar
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}
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}
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session = channel._state.http._HTTPClient__session
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return cls(feed, adapter=AsyncWebhookAdapter(session=session))
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@classmethod
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def from_state(cls, data, state):
|
|
session = state.http._HTTPClient__session
|
|
return cls(data, adapter=AsyncWebhookAdapter(session=session), state=state)
|
|
|
|
@property
|
|
def guild(self):
|
|
"""Optional[:class:`Guild`]: The guild this webhook belongs to.
|
|
|
|
If this is a partial webhook, then this will always return ``None``.
|
|
"""
|
|
return self._state._get_guild(self.guild_id)
|
|
|
|
@property
|
|
def channel(self):
|
|
"""Optional[:class:`TextChannel`]: The text channel this webhook belongs to.
|
|
|
|
If this is a partial webhook, then this will always return ``None``.
|
|
"""
|
|
guild = self.guild
|
|
return guild and guild.get_channel(self.channel_id)
|
|
|
|
@property
|
|
def created_at(self):
|
|
""":class:`datetime.datetime`: Returns the webhook's creation time in UTC."""
|
|
return utils.snowflake_time(self.id)
|
|
|
|
@property
|
|
def avatar_url(self):
|
|
"""Returns an :class:`Asset` for the avatar the webhook has.
|
|
|
|
If the webhook does not have a traditional avatar, an asset for
|
|
the default avatar is returned instead.
|
|
|
|
This is equivalent to calling :meth:`avatar_url_as` with the
|
|
default parameters.
|
|
"""
|
|
return self.avatar_url_as()
|
|
|
|
def avatar_url_as(self, *, format=None, size=1024):
|
|
"""Returns an :class:`Asset` for the avatar the webhook has.
|
|
|
|
If the webhook does not have a traditional avatar, an asset for
|
|
the default avatar is returned instead.
|
|
|
|
The format must be one of 'jpeg', 'jpg', or 'png'.
|
|
The size must be a power of 2 between 16 and 1024.
|
|
|
|
Parameters
|
|
-----------
|
|
format: Optional[:class:`str`]
|
|
The format to attempt to convert the avatar to.
|
|
If the format is ``None``, then it is equivalent to png.
|
|
size: :class:`int`
|
|
The size of the image to display.
|
|
|
|
Raises
|
|
------
|
|
InvalidArgument
|
|
Bad image format passed to ``format`` or invalid ``size``.
|
|
|
|
Returns
|
|
--------
|
|
:class:`Asset`
|
|
The resulting CDN asset.
|
|
"""
|
|
if self.avatar is None:
|
|
# Default is always blurple apparently
|
|
return Asset(self._state, '/embed/avatars/0.png')
|
|
|
|
if not utils.valid_icon_size(size):
|
|
raise InvalidArgument("size must be a power of 2 between 16 and 1024")
|
|
|
|
format = format or 'png'
|
|
|
|
if format not in ('png', 'jpg', 'jpeg'):
|
|
raise InvalidArgument("format must be one of 'png', 'jpg', or 'jpeg'.")
|
|
|
|
url = '/avatars/{0.id}/{0.avatar}.{1}?size={2}'.format(self, format, size)
|
|
return Asset(self._state, url)
|
|
|
|
def delete(self):
|
|
"""|maybecoro|
|
|
|
|
Deletes this Webhook.
|
|
|
|
If the webhook is constructed with a :class:`RequestsWebhookAdapter` then this is
|
|
not a coroutine.
|
|
|
|
Raises
|
|
-------
|
|
HTTPException
|
|
Deleting the webhook failed.
|
|
NotFound
|
|
This webhook does not exist.
|
|
Forbidden
|
|
You do not have permissions to delete this webhook.
|
|
InvalidArgument
|
|
This webhook does not have a token associated with it.
|
|
"""
|
|
if self.token is None:
|
|
raise InvalidArgument('This webhook does not have a token associated with it')
|
|
|
|
return self._adapter.delete_webhook()
|
|
|
|
def edit(self, **kwargs):
|
|
"""|maybecoro|
|
|
|
|
Edits this Webhook.
|
|
|
|
If the webhook is constructed with a :class:`RequestsWebhookAdapter` then this is
|
|
not a coroutine.
|
|
|
|
Parameters
|
|
-------------
|
|
name: Optional[:class:`str`]
|
|
The webhook's new default name.
|
|
avatar: Optional[:class:`bytes`]
|
|
A :term:`py:bytes-like object` representing the webhook's new default avatar.
|
|
|
|
Raises
|
|
-------
|
|
HTTPException
|
|
Editing the webhook failed.
|
|
NotFound
|
|
This webhook does not exist.
|
|
InvalidArgument
|
|
This webhook does not have a token associated with it.
|
|
"""
|
|
if self.token is None:
|
|
raise InvalidArgument('This webhook does not have a token associated with it')
|
|
|
|
payload = {}
|
|
|
|
try:
|
|
name = kwargs['name']
|
|
except KeyError:
|
|
pass
|
|
else:
|
|
if name is not None:
|
|
payload['name'] = str(name)
|
|
else:
|
|
payload['name'] = None
|
|
|
|
try:
|
|
avatar = kwargs['avatar']
|
|
except KeyError:
|
|
pass
|
|
else:
|
|
if avatar is not None:
|
|
payload['avatar'] = utils._bytes_to_base64_data(avatar)
|
|
else:
|
|
payload['avatar'] = None
|
|
|
|
return self._adapter.edit_webhook(**payload)
|
|
|
|
def send(self, content=None, *, wait=False, username=None, avatar_url=None, tts=False,
|
|
file=None, files=None, embed=None, embeds=None):
|
|
"""|maybecoro|
|
|
|
|
Sends a message using the webhook.
|
|
|
|
If the webhook is constructed with a :class:`RequestsWebhookAdapter` then this is
|
|
not a coroutine.
|
|
|
|
The content must be a type that can convert to a string through ``str(content)``.
|
|
|
|
To upload a single file, the ``file`` parameter should be used with a
|
|
single :class:`File` object.
|
|
|
|
If the ``embed`` parameter is provided, it must be of type :class:`Embed` and
|
|
it must be a rich embed type. You cannot mix the ``embed`` parameter with the
|
|
``embeds`` parameter, which must be a :class:`list` of :class:`Embed` objects to send.
|
|
|
|
Parameters
|
|
------------
|
|
content: :class:`str`
|
|
The content of the message to send.
|
|
wait: :class:`bool`
|
|
Whether the server should wait before sending a response. This essentially
|
|
means that the return type of this function changes from ``None`` to
|
|
a :class:`Message` if set to ``True``.
|
|
username: :class:`str`
|
|
The username to send with this message. If no username is provided
|
|
then the default username for the webhook is used.
|
|
avatar_url: Union[:class:`str`, :class:`Asset`]
|
|
The avatar URL to send with this message. If no avatar URL is provided
|
|
then the default avatar for the webhook is used.
|
|
tts: :class:`bool`
|
|
Indicates if the message should be sent using text-to-speech.
|
|
file: :class:`File`
|
|
The file to upload. This cannot be mixed with ``files`` parameter.
|
|
files: List[:class:`File`]
|
|
A list of files to send with the content. This cannot be mixed with the
|
|
``file`` parameter.
|
|
embed: :class:`Embed`
|
|
The rich embed for the content to send. This cannot be mixed with
|
|
``embeds`` parameter.
|
|
embeds: List[:class:`Embed`]
|
|
A list of embeds to send with the content. Maximum of 10. This cannot
|
|
be mixed with the ``embed`` parameter.
|
|
|
|
Raises
|
|
--------
|
|
HTTPException
|
|
Sending the message failed.
|
|
NotFound
|
|
This webhook was not found.
|
|
Forbidden
|
|
The authorization token for the webhook is incorrect.
|
|
InvalidArgument
|
|
You specified both ``embed`` and ``embeds`` or the length of
|
|
``embeds`` was invalid or there was no token associated with
|
|
this webhook.
|
|
|
|
Returns
|
|
---------
|
|
Optional[:class:`Message`]
|
|
The message that was sent.
|
|
"""
|
|
|
|
payload = {}
|
|
if self.token is None:
|
|
raise InvalidArgument('This webhook does not have a token associated with it')
|
|
if files is not None and file is not None:
|
|
raise InvalidArgument('Cannot mix file and files keyword arguments.')
|
|
if embeds is not None and embed is not None:
|
|
raise InvalidArgument('Cannot mix embed and embeds keyword arguments.')
|
|
|
|
if embeds is not None:
|
|
if len(embeds) > 10:
|
|
raise InvalidArgument('embeds has a maximum of 10 elements.')
|
|
payload['embeds'] = [e.to_dict() for e in embeds]
|
|
|
|
if embed is not None:
|
|
payload['embeds'] = [embed.to_dict()]
|
|
|
|
if content is not None:
|
|
payload['content'] = str(content)
|
|
|
|
payload['tts'] = tts
|
|
if avatar_url:
|
|
payload['avatar_url'] = str(avatar_url)
|
|
if username:
|
|
payload['username'] = username
|
|
|
|
return self._adapter.execute_webhook(wait=wait, file=file, files=files, payload=payload)
|
|
|
|
def execute(self, *args, **kwargs):
|
|
"""An alias for :meth:`~.Webhook.send`."""
|
|
return self.send(*args, **kwargs)
|