telethon-asyncpg 0.2.0

Asyncpg powered session for pgsql databases

Async session for telethon

Installation

pip install telethon_asyncpg
# Or with poetry
poetry add telethon_asyncpg

Usage

import ssl  # optional

from telethon import events, TelegramClient

from telethon_asyncpg import AsyncpgSession, install
install()

URI = ???  # URI-string
# dialect+driver://username:password@host:port/database

pgconf = dict(dsn=URI, min_size=5, max_size=5)
# to overcome problem with TLS connection to db pass
# ssl=ssl.SSLContext(protocol=ssl.PROTOCOL_TLS) to pgconf
session = AsyncpgSession(pgconf, session_id_factory=???)
# session_id_factory is any callable with "() -> str" signature
# default factory is uuid4 str generator. why factory? (it's not really factory ik)
bot = TelegramClient(session=session, api_id=???, api_hash=???)

@bot.on(events.NewMessage())
async def message_handler(message):
    await message.reply("Hi!")

async def start():
    await bot.start()
    print(await bot.get_entity("martin_winks"))
    await bot.run_until_disconnected()

if __name__ == '__main__':
    import asyncio
    asyncio.get_event_loop().run_until_complete(start())

• AsyncpgSession can also use shared pool by AsyncpgSession.with_pool initializer-method

my_pool = asyncpg.create_pool(...)
session = AsyncpgSession.with_pool(my_pool, lambda: "session-id", True)

Check out the examples/ folder for more realistic examples.

Contribution

Currently we have only asyncpg session available, if you want to contribute with your wrapper - welcome. Take AsyncpgSession as an example.

For contributors

Patched TelegramClient <-> Session

• TelegramClient and Session object share settings {session.meth: (args_seq, kwargs_mapping)} dictionary. By protocol TelegramClient must add callable with args and kwargs. By protocol session must call this functions at start as it wants (e.g. pass more arguments such as connection object to session.method)

• TelegramClient may call session.start several times per one session instance and session should control its start itself and if it’s already started it shouldn’t start again

• Session.save method is guaranteed to be called as in usual telethon

Hacking

# install poetry dependency manager
# Fork/Fork+Clone && cd {{cloned}}
poetry install
# happy hacking!

References

Telethon: here asyncpg pg-driver: asyncpg