mirror of
https://github.com/LonamiWebs/Telethon.git
synced 2024-11-23 01:46:35 +03:00
244 lines
9.3 KiB
Python
244 lines
9.3 KiB
Python
import functools
|
|
import inspect
|
|
import typing
|
|
|
|
from .users import _NOT_A_REQUEST
|
|
from .. import helpers, utils
|
|
from ..tl import functions, TLRequest
|
|
|
|
if typing.TYPE_CHECKING:
|
|
from .telegramclient import TelegramClient
|
|
|
|
|
|
# TODO Make use of :tl:`InvokeWithMessagesRange` somehow
|
|
# For that, we need to use :tl:`GetSplitRanges` first.
|
|
class _TakeoutClient:
|
|
"""
|
|
Proxy object over the client.
|
|
"""
|
|
__PROXY_INTERFACE = ('__enter__', '__exit__', '__aenter__', '__aexit__')
|
|
|
|
def __init__(self, finalize, client, request):
|
|
# We use the name mangling for attributes to make them inaccessible
|
|
# from within the shadowed client object and to distinguish them from
|
|
# its own attributes where needed.
|
|
self.__finalize = finalize
|
|
self.__client = client
|
|
self.__request = request
|
|
self.__success = None
|
|
|
|
@property
|
|
def success(self):
|
|
return self.__success
|
|
|
|
@success.setter
|
|
def success(self, value):
|
|
self.__success = value
|
|
|
|
async def __aenter__(self):
|
|
# Enter/Exit behaviour is "overrode", we don't want to call start.
|
|
client = self.__client
|
|
if client.session.takeout_id is None:
|
|
client.session.takeout_id = (await client(self.__request)).id
|
|
elif self.__request is not None:
|
|
raise ValueError("Can't send a takeout request while another "
|
|
"takeout for the current session still not been finished yet.")
|
|
return self
|
|
|
|
async def __aexit__(self, exc_type, exc_value, traceback):
|
|
if self.__success is None and self.__finalize:
|
|
self.__success = exc_type is None
|
|
|
|
if self.__success is not None:
|
|
result = await self(functions.account.FinishTakeoutSessionRequest(
|
|
self.__success))
|
|
if not result:
|
|
raise ValueError("Failed to finish the takeout.")
|
|
self.session.takeout_id = None
|
|
|
|
__enter__ = helpers._sync_enter
|
|
__exit__ = helpers._sync_exit
|
|
|
|
async def __call__(self, request, ordered=False):
|
|
takeout_id = self.__client.session.takeout_id
|
|
if takeout_id is None:
|
|
raise ValueError('Takeout mode has not been initialized '
|
|
'(are you calling outside of "with"?)')
|
|
|
|
single = not utils.is_list_like(request)
|
|
requests = ((request,) if single else request)
|
|
wrapped = []
|
|
for r in requests:
|
|
if not isinstance(r, TLRequest):
|
|
raise _NOT_A_REQUEST()
|
|
await r.resolve(self, utils)
|
|
wrapped.append(functions.InvokeWithTakeoutRequest(takeout_id, r))
|
|
|
|
return await self.__client(
|
|
wrapped[0] if single else wrapped, ordered=ordered)
|
|
|
|
def __getattribute__(self, name):
|
|
# We access class via type() because __class__ will recurse infinitely.
|
|
# Also note that since we've name-mangled our own class attributes,
|
|
# they'll be passed to __getattribute__() as already decorated. For
|
|
# example, 'self.__client' will be passed as '_TakeoutClient__client'.
|
|
# https://docs.python.org/3/tutorial/classes.html#private-variables
|
|
if name.startswith('__') and name not in type(self).__PROXY_INTERFACE:
|
|
raise AttributeError # force call of __getattr__
|
|
|
|
# Try to access attribute in the proxy object and check for the same
|
|
# attribute in the shadowed object (through our __getattr__) if failed.
|
|
return super().__getattribute__(name)
|
|
|
|
def __getattr__(self, name):
|
|
value = getattr(self.__client, name)
|
|
if inspect.ismethod(value):
|
|
# Emulate bound methods behavior by partially applying our proxy
|
|
# class as the self parameter instead of the client.
|
|
return functools.partial(
|
|
getattr(self.__client.__class__, name), self)
|
|
|
|
return value
|
|
|
|
def __setattr__(self, name, value):
|
|
if name.startswith('_{}__'.format(type(self).__name__.lstrip('_'))):
|
|
# This is our own name-mangled attribute, keep calm.
|
|
return super().__setattr__(name, value)
|
|
return setattr(self.__client, name, value)
|
|
|
|
|
|
class AccountMethods:
|
|
def takeout(
|
|
self: 'TelegramClient',
|
|
finalize: bool = True,
|
|
*,
|
|
contacts: bool = None,
|
|
users: bool = None,
|
|
chats: bool = None,
|
|
megagroups: bool = None,
|
|
channels: bool = None,
|
|
files: bool = None,
|
|
max_file_size: bool = None) -> 'TelegramClient':
|
|
"""
|
|
Returns a :ref:`telethon-client` which calls methods behind a takeout session.
|
|
|
|
It does so by creating a proxy object over the current client through
|
|
which making requests will use :tl:`InvokeWithTakeoutRequest` to wrap
|
|
them. In other words, returns the current client modified so that
|
|
requests are done as a takeout:
|
|
|
|
Some of the calls made through the takeout session will have lower
|
|
flood limits. This is useful if you want to export the data from
|
|
conversations or mass-download media, since the rate limits will
|
|
be lower. Only some requests will be affected, and you will need
|
|
to adjust the `wait_time` of methods like `client.iter_messages
|
|
<telethon.client.messages.MessageMethods.iter_messages>`.
|
|
|
|
By default, all parameters are `None`, and you need to enable those
|
|
you plan to use by setting them to either `True` or `False`.
|
|
|
|
You should ``except errors.TakeoutInitDelayError as e``, since this
|
|
exception will raise depending on the condition of the session. You
|
|
can then access ``e.seconds`` to know how long you should wait for
|
|
before calling the method again.
|
|
|
|
There's also a `success` property available in the takeout proxy
|
|
object, so from the `with` body you can set the boolean result that
|
|
will be sent back to Telegram. But if it's left `None` as by
|
|
default, then the action is based on the `finalize` parameter. If
|
|
it's `True` then the takeout will be finished, and if no exception
|
|
occurred during it, then `True` will be considered as a result.
|
|
Otherwise, the takeout will not be finished and its ID will be
|
|
preserved for future usage as `client.session.takeout_id
|
|
<telethon.sessions.abstract.Session.takeout_id>`.
|
|
|
|
Arguments
|
|
finalize (`bool`):
|
|
Whether the takeout session should be finalized upon
|
|
exit or not.
|
|
|
|
contacts (`bool`):
|
|
Set to `True` if you plan on downloading contacts.
|
|
|
|
users (`bool`):
|
|
Set to `True` if you plan on downloading information
|
|
from users and their private conversations with you.
|
|
|
|
chats (`bool`):
|
|
Set to `True` if you plan on downloading information
|
|
from small group chats, such as messages and media.
|
|
|
|
megagroups (`bool`):
|
|
Set to `True` if you plan on downloading information
|
|
from megagroups (channels), such as messages and media.
|
|
|
|
channels (`bool`):
|
|
Set to `True` if you plan on downloading information
|
|
from broadcast channels, such as messages and media.
|
|
|
|
files (`bool`):
|
|
Set to `True` if you plan on downloading media and
|
|
you don't only wish to export messages.
|
|
|
|
max_file_size (`int`):
|
|
The maximum file size, in bytes, that you plan
|
|
to download for each message with media.
|
|
|
|
Example
|
|
.. code-block:: python
|
|
|
|
from telethon import errors
|
|
|
|
try:
|
|
with client.takeout() as takeout:
|
|
client.get_messages('me') # normal call
|
|
takeout.get_messages('me') # wrapped through takeout (less limits)
|
|
|
|
for message in takeout.iter_messages(chat, wait_time=0):
|
|
... # Do something with the message
|
|
|
|
except errors.TakeoutInitDelayError as e:
|
|
print('Must wait', e.seconds, 'before takeout')
|
|
"""
|
|
request_kwargs = dict(
|
|
contacts=contacts,
|
|
message_users=users,
|
|
message_chats=chats,
|
|
message_megagroups=megagroups,
|
|
message_channels=channels,
|
|
files=files,
|
|
file_max_size=max_file_size
|
|
)
|
|
arg_specified = (arg is not None for arg in request_kwargs.values())
|
|
|
|
if self.session.takeout_id is None or any(arg_specified):
|
|
request = functions.account.InitTakeoutSessionRequest(
|
|
**request_kwargs)
|
|
else:
|
|
request = None
|
|
|
|
return _TakeoutClient(finalize, self, request)
|
|
|
|
async def end_takeout(self: 'TelegramClient', success: bool) -> bool:
|
|
"""
|
|
Finishes the current takeout session.
|
|
|
|
Arguments
|
|
success (`bool`):
|
|
Whether the takeout completed successfully or not.
|
|
|
|
Returns
|
|
`True` if the operation was successful, `False` otherwise.
|
|
|
|
Example
|
|
.. code-block:: python
|
|
|
|
client.end_takeout(success=False)
|
|
"""
|
|
try:
|
|
async with _TakeoutClient(True, self, None) as takeout:
|
|
takeout.success = success
|
|
except ValueError:
|
|
return False
|
|
return True
|