forked from loafle/openapi-generator-original
cdfab4eee3
aiohttp's `ClientSession` & `TCPConnector` used to obtain an event loop in __init__ (via `asyncio.get_event_loop`). However, as of https://github.com/aio-libs/aiohttp/pull/8512 both classes now obtain the running event loop and won't potentially create one. This makes it impossible to create `ClientSession` and `TCPConnector` objects outside of coroutines, as `get_running_loop` must be called from a coroutine. Thus we defer the creation of a `ClientSession` into the actual request and cache it for later usage. Thereby we pay only a very small price on the first request, but subsequent requests will not be any more expensive.