apply TypeConverter to args in transactions #12
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aarongable
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jsha
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…erter (#8494) Today, timestamp truncation happens for queries using `*borp.DbMap` but not `*borp.Transaction`. That means comparisons still see sub-seconds, but inserts into MariaDB `DATETIME` columns silently truncate them to whole seconds. On MySQL 8, the same queries will still include sub-seconds, but inserts into `DATETIME` columns will round to the nearest second instead of truncate. This leads to issues for queries like the one in `*StorageAuthority.UpdateCRLShard()`. When two CRL updaters write within the same second one may be rounded up to the next second. When the other updater attempts its own `UPDATE .. WHERE thisUpdate <= ?`, the condition fails because the stored timestamp now appears to be in the future. Ahead of the transition from ProxySQL + MariaDB to Vitess + MySQL 8 in #8468, update borp (letsencrypt/borp#12) to expose Transaction arguments to the BoulderTypeConverter, allowing it to truncate all timestamps passed through Transactions and keep behavior consistent across `*borp.DbMap` and `*borp.Transaction`, as well as MariaDB and MySQL 8. Part of #7736
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Extend the TypeConverter functionality added to
*DbMapmethods in #11 to*Transactionmethods as well.