| commit | 2620ac3aeafe75a62fa81bd5094a8e1e4ef1ca8b | [log] [tgz] |
|---|---|---|
| author | Daniel Theophanes <kardianos@gmail.com> | Mon Oct 02 11:16:53 2017 -0700 |
| committer | Daniel Theophanes <kardianos@gmail.com> | Tue Oct 24 17:02:13 2017 +0000 |
| tree | b2c50f026d9768f9f604478e396f02db171dc445 | |
| parent | 532714829ee4e816e54b6ccfe0b28f011f1659b2 [diff] |
database/sql: add driver.ResetSessioner and add pool support A single database connection ususally maps to a single session. A connection pool is logically also a session pool. Most sessions have a way to reset the session state which is desirable to prevent one bad query from poisoning another later query with temp table name conflicts or other persistent session resources. It also lets drivers provide users with better error messages from queryies when the underlying transport or query method fails. Internally the driver connection should now be marked as bad, but return the actual connection. When ResetSession is called on the connection it should return driver.ErrBadConn to remove it from the connection pool. Previously drivers had to choose between meaningful error messages or poisoning the connection pool. Lastly update TestPoolExhaustOnCancel from relying on a WAIT query fixing a flaky timeout issue exposed by this change. Fixes #22049 Fixes #20807 Change-Id: Idffa1a7ca9ccfe633257c4a3ae299b864f46c5b6 Reviewed-on: https://go-review.googlesource.com/67630 Reviewed-by: Ian Lance Taylor <iant@golang.org>
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