Work around line length limit of asyncio.StreamReader

[felixfontein]

Fixes the problem mentioned in ansible-community/antsibull-docs#122 (comment).

[gotmax23]

FWIW, subprocess_tee, which somewhat inspired this implementation, sets

STREAM_LIMIT = 2**23  # 8MB instead of default 64kb, override it if you need

https://github.com/pycontribs/subprocess-tee/blob/7631e695a0d7fbc7c9622636aa298e4091894016/src/subprocess_tee/__init__.py#L254/11/23

Setting some limit means we don't have to complicate this code, and also, I don't think the logger can't handle unlimitted line lengths. See #52 (comment).

[felixfontein]

FWIW, subprocess_tee, which somewhat inspired this implementation, sets

STREAM_LIMIT = 2**23  # 8MB instead of default 64kb, override it if you need

https://github.com/pycontribs/subprocess-tee/blob/7631e695a0d7fbc7c9622636aa298e4091894016/src/subprocess_tee/__init__.py#L254/11/23

That sounds like a huge hack, and something we should absolutely not do.

Setting some limit means we don't have to complicate this code, and also, I don't think the logger can't handle unlimitted line lengths. See #52 (comment).

No, but I don't think we should decide what the logger can handle and what not. We should pass on what the program returns, no matter what it is (as long as it fits in memory).

[gotmax23]

Alright, I'm convinced. This looks good to me, but I have one question. Thanks!

[felixfontein]

@gotmax23 thanks for reviewing this!