This change introduces tstime.Clock which is the start of a mockable
interface for use with testing other upcoming code changes.
Fixes#8463
Change-Id: I59eabc797828809194575736615535d918242ec4
Signed-off-by: Adrian Dewhurst <adrian@tailscale.com>
The time.Parse function has been optimized to the point
where it is faster than our custom implementation.
See upstream changes in:
* https://go.dev/cl/429862
* https://go.dev/cl/425197
* https://go.dev/cl/425116
Performance:
BenchmarkGoParse3339/Z 38.75 ns/op 0 B/op 0 allocs/op
BenchmarkGoParse3339/TZ 54.02 ns/op 0 B/op 0 allocs/op
BenchmarkParse3339/Z 40.17 ns/op 0 B/op 0 allocs/op
BenchmarkParse3339/TZ 87.06 ns/op 0 B/op 0 allocs/op
We can see that the stdlib implementation is now faster.
Signed-off-by: Joe Tsai <joetsai@digital-static.net>
This updates all source files to use a new standard header for copyright
and license declaration. Notably, copyright no longer includes a date,
and we now use the standard SPDX-License-Identifier header.
This commit was done almost entirely mechanically with perl, and then
some minimal manual fixes.
Updates #6865
Signed-off-by: Will Norris <will@tailscale.com>
The cutset provided to strings.TrimRight was missing the digit '6',
making it such that we couldn't parse something like "365d".
Signed-off-by: Joe Tsai <joetsai@digital-static.net>
Makes parsing 4.6x faster.
name old time/op new time/op delta
ParseInt-12 32.1ns ± 1% 6.9ns ± 2% -78.55% (p=0.000 n=10+9)
Signed-off-by: David Anderson <danderson@tailscale.com>
Go's time.Parse always allocates a FixedZone for time strings not in
UTC (ending in "Z"). This avoids that allocation, at the cost of
adding a cache.
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
