Add dscache.AlwaysFilterRDS function.

Add dscache.AlwaysFilterRDS function.

It's like dscache.FilterRDS, except it doesn't use IsGloballyEnabled. Intended
to be used by callers that know better when to apply (or not) the filter.

R=iannucci@chromium.org
BUG=

Committed: https://github.com/luci/gae/commit/f8f0b39b483531e3c4a6cdef6693026676726f7c

[Vadim Sh., 2016-01-12 03:08:15]

Adding any sort of hook would be ridiculous considering how IsGloballyEnabled is
called...

[iannucci, 2016-01-12 19:11:01]

lgtm

https://codereview.chromium.org/1579853002/diff/1/filter/dscache/context.go
File filter/dscache/context.go (right):

https://codereview.chromium.org/1579853002/diff/1/filter/dscache/context.go#n...
filter/dscache/context.go:30: // If shardsForKey is nil, the value of
DefaultShards is used for all keys.
I'd change the comment here to mention that it's conditional on
IsGloballyEnabled

[Vadim Sh., 2016-01-12 19:16:31]

https://codereview.chromium.org/1579853002/diff/1/filter/dscache/context.go
File filter/dscache/context.go (right):

https://codereview.chromium.org/1579853002/diff/1/filter/dscache/context.go#n...
filter/dscache/context.go:30: // If shardsForKey is nil, the value of
DefaultShards is used for all keys.
On 2016/01/12 19:11:01, iannucci wrote:
> I'd change the comment here to mention that it's conditional on
> IsGloballyEnabled

Done.

[Vadim Sh., 2016-01-12 19:16:33]

The CQ bit was checked by vadimsh@chromium.org

[Vadim Sh., 2016-01-12 19:16:33]

The patchset sent to the CQ was uploaded after l-g-t-m from
iannucci@chromium.org
Link to the patchset: https://codereview.chromium.org/1579853002/#ps20001
(title: "add comment")

[commit-bot: I haz the power, 2016-01-12 19:16:41]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1579853002/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1579853002/20001

[commit-bot: I haz the power, 2016-01-12 19:19:01]

Description was changed from

==========
Add dscache.AlwaysFilterRDS function.

It's like dscache.FilterRDS, except it doesn't use IsGloballyEnabled. Intended
to be used by callers that know better when to apply (or not) the filter.

R=iannucci@chromium.org
BUG=
==========

to

==========
Add dscache.AlwaysFilterRDS function.

It's like dscache.FilterRDS, except it doesn't use IsGloballyEnabled. Intended
to be used by callers that know better when to apply (or not) the filter.

R=iannucci@chromium.org
BUG=

Committed:
https://github.com/luci/gae/commit/f8f0b39b483531e3c4a6cdef6693026676726f7c
==========

[commit-bot: I haz the power, 2016-01-12 19:19:01]

Committed patchset #2 (id:20001) as
https://github.com/luci/gae/commit/f8f0b39b483531e3c4a6cdef6693026676726f7c