driver: context support #997
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Close instead of SetTimeout hack implement more interfaces, with assertions
serprex
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Feb 21, 2025
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Feb 25, 2025
based on go-mysql-org/go-mysql#997 without having to switch to `database/sql`
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database/sqlQueryContextfalls back to checking if context is done before callingQuery, so query does not get cancelled when context is cancelled once execution startsdriver.Queryer is deprecated
Unfortunately supporting this on top of net.Conn requires a goroutine. But that goroutine can be shared across lifetime of connection since connection doesn't need to be threadsafe
To cancel ongoing Read/Write the connection is closed when context finishes
At the end of the function active context is switched to
context.Background(). Some error handling could be implemented around receiving non-background context when active context is a non-background context, as that implies thread safety has been violated