Correct the docstring and implementation of AuthMetadataPlugin#22471
Merged
lidizheng merged 1 commit intogrpc:masterfrom Mar 25, 2020
Merged
Correct the docstring and implementation of AuthMetadataPlugin#22471lidizheng merged 1 commit intogrpc:masterfrom
lidizheng merged 1 commit intogrpc:masterfrom
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@gnossen PTAL |
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@lidizheng This switches the |
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@gnossen The Cython spawned thread will be blocked. For sync Python, if an HTTP request will block, it have to block on a certain thread. I think it might be a viable way to ensure the RPC caller is not blocked by the plugin callback. If the plugin callback never finished (blocked forever or not calling the supplied callback), the RPC won't be proceed due to pending metadata. But other RPC features still works, like timeout. |
gnossen
approved these changes
Mar 25, 2020
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The docstring of AuthMetadataPlugin has created confusion for our end users googleapis/google-auth-library-python#351. Our current implementation spawns a dedicated thread each time the AuthMetadataPlugin is invoked. It doesn't block the caller of the RPC. I confirmed the behavior by twitching our credentials example.
Also, this PR removed the thread pool in the plugin class to be consistent with the docstring and googleapis/google-auth-library-python#467.
CC @busunkim96