x/tools/gopls: context cancellation errors in type-checking #33678
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Perhaps this is the same as #33531 (but I'm unsure). |
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This is an issue I just introduced with CL 185438. I'm in the process of some pretty large changes, so things may be a bit unstable on master right now. That said, it seems like what's happening here is that we are propagating context cancellation errors from type-checking. I'll try to investigate this a bit further. |
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Maybe the CL you mentioned reintroduced the problem where we cache the context.Canceled error in the package cache and it gets stuck that way indefinitely. Can we make it never cache the package on type checker errors like before? Also, it seems like https://go-review.googlesource.com/c/tools/+/190412 maybe have broken some spots checking explicitly for the context.Canceled error. Perhaps we should use the "%w" error wrapping verb and the checking code should use |
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Change https://golang.org/cl/190601 mentions this issue: |
Updates golang/go#33678 Change-Id: I844d6599a3e0ae9594dda1abaebe938402b65822 Reviewed-on: https://go-review.googlesource.com/c/tools/+/190601 Run-TryBot: Rebecca Stambler <[email protected]> TryBot-Result: Gobot Gobot <[email protected]> Reviewed-by: Ian Cottrell <[email protected]>
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Change https://golang.org/cl/192719 mentions this issue: |
The memoize store passes a detached context to the value getter function. This is important since if the value getter experiences a context cancellation it will end up caching context.Canceled, which you never want. When type checking, we were ignoring the detached context and using the "real" request context. This would cause the context.Canceled error to get cached and continue popping up in various situations. Fix by swapping the importer's context to the detached context. It is a little messy since the importer stores the context as a field. I added a defer to restore the original context since it doesn't seem correct to let the detached context escape the memoize function. Updates golang/go#33678 Change-Id: I20dd466b0072ac2e856adbe993364f77e93ab054 Reviewed-on: https://go-review.googlesource.com/c/tools/+/192719 Reviewed-by: Rebecca Stambler <[email protected]> Run-TryBot: Rebecca Stambler <[email protected]>
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I believe that these errors should no longer be an issue, as a lot has changed in the |
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