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Some were never used, and some haven't been used for years.
One exception is net/http's readerAndCloser, which was only used in a
test. Move it to a test file.
While at it, remove a check in regexp that could never fire; the field
is an uint32, so it can never be negative.
Change-Id: Ia2200f6afa106bae4034045ea8233b452f38747b
Reviewed-on: https://go-review.googlesource.com/c/go/+/192621
Run-TryBot: Daniel Martà <mvdan@mvdan.cc>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
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ctx.Done() == ctx.Background().Done() is just
a long way to write ctx.Done() == nil.
Use the short way.
Change-Id: I7b3198b5dc46b8b40086243aa61882bc8c268eac
Reviewed-on: https://go-review.googlesource.com/78128
Run-TryBot: Russ Cox <rsc@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
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Drivers shouldn't need to implement both Queryer and QueryerContext,
they should just implement QueryerContext. Same with Execer and
ExecerContext. This CL tests for QueryContext and ExecerContext
first so drivers do not need to implement Queryer and Execer
with an empty definition.
Fixes #21663
Change-Id: Ifbaa71da669f4bc60f8da8c41a04a4afed699a9f
Reviewed-on: https://go-review.googlesource.com/65733
Reviewed-by: Ian Lance Taylor <iant@golang.org>
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Currently, the check for `ctx.Done() == context.Background().Done()`
comes before the check to see if we are ignoring any options. That
check should be done earlier, so that the options are not silently
ignored.
Fixes #21350
Change-Id: I3704e4209854c7d99f3f92498bae831cabc7e419
Reviewed-on: https://go-review.googlesource.com/53970
Reviewed-by: Daniel Theophanes <kardianos@gmail.com>
Run-TryBot: Daniel Theophanes <kardianos@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
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Previously it was intended that Rows.Scan would return
an error and Rows.Err would return nil. This was problematic
because drivers could not differentiate between a normal
Rows.Close or a context cancel close.
The alternative is to require drivers to return a Scan to return
an error if the driver is closed while there are still rows to be read.
This is currently not how several drivers currently work and may be
difficult to detect when there are additional rows.
At the same time guard the the Rows.lasterr and prevent a close
while a Rows operation is active.
For the drivers that do not have Context methods, do not check for
context cancelation after the operation, but before for any operation
that may modify the database state.
Fixes #18961
Change-Id: I49a25318ecd9f97a35d5b50540ecd850c01cfa5e
Reviewed-on: https://go-review.googlesource.com/36485
Reviewed-by: Russ Cox <rsc@golang.org>
Run-TryBot: Russ Cox <rsc@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
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Drivers which previously supported tip will need to update to this
revision before release.
Fixes #18284
Change-Id: I70b8e7afff1558a8b5348885ce9f50e067c72ee9
Reviewed-on: https://go-review.googlesource.com/34330
Run-TryBot: Daniel Theophanes <kardianos@gmail.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
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When context methods were initially added it was attempted to unify
behavior between drivers without Context methods and those with
Context methods to always return right away when the Context expired.
However in doing so the driver call could be executed outside of the
scope of the driver connection lock and thus bypassing thread safety.
The new behavior waits until the driver operation is complete. It then
checks to see if the context has expired and if so returns that error.
Change-Id: I4a5c7c3263420c57778f36a5ed6fa0ef8cb32b20
Reviewed-on: https://go-review.googlesource.com/32422
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
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Prior to this change, it was implied that transaction properties
would be carried in the context value. However, no such properties
were defined, not even common ones. Define two common properties:
isolation level and read-only. Drivers may choose to support
additional transaction properties. It is not expected any
further transaction properties will be added in the future.
Change-Id: I2f680115a14a1333c65ba6f943d9a1149d412918
Reviewed-on: https://go-review.googlesource.com/31258
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
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Modify the new Context methods to take a name-value driver struct.
This will require more modifications to drivers to use, but will
reduce the overall number of structures that need to be maintained
over time.
Fixes #12381
Change-Id: I30747533ce418a1be5991a0c8767a26e8451adbd
Reviewed-on: https://go-review.googlesource.com/30166
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
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To prevent leaking connections, close any open Rows when the
context is cancelled. Also enforce context cancel while reading
rows off of the wire.
Change-Id: I62237ecdb7d250d6734f6ce3d2b0bcb16dc6fda7
Reviewed-on: https://go-review.googlesource.com/29957
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
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Add context methods to sql and sql/driver methods. If
the driver doesn't implement context methods the connection
pool will still handle timeouts when a query fails to return
in time or when a connection is not available from the pool
in time.
There will be a follow-up CL that will add support for
context values that specify transaction levels and modes
that a driver can use.
Fixes #15123
Change-Id: Ia99f3957aa3f177b23044dd99d4ec217491a30a7
Reviewed-on: https://go-review.googlesource.com/29381
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
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