Refactor client-go/util/flowcontrol/throttle.go RateLimiter

- Introduce PassiveRateLimiter which implements all methods of previous RateLimiter except Accept() and Wait()
- Change RateLimiter interface to extend PassiveRateLimiter by additionally implementing Accept() and Wait()
- Make client-go/tools/record use PassiveRateLimiter

Refactor EventSourceObjectSpamFilter, EventAggregator, EventCorrelator

- EventSourceObjectSpamFilter, EventAggregator, EventCorrelator use clock.PassiveClock now.
	- This won't be a breaking change because even if a clock.Clock is passed, it still implements the clock.PassiveClock interface.
- Extend clock.PassiveClock through Clock.
- Replace pacakge local implementation of realClock with clock.RealClock
- In flowcontrol/throttle.go split tokenBucketRateLimiters to use Clock and clock.PassiveClock.
- Migrate client-go/tools/record tests from using IntervalClock to using SimpleIntervalClock (honest implementation of clock.PassiveClock)

Signed-off-by: Madhav Jivrajani <madhav.jiv@gmail.com>

Kubernetes-commit: ac5c55f0bd853fcf883d9b8e1f5ef728a2fb5309
This commit is contained in:
Madhav Jivrajani
2021-08-25 21:56:26 +05:30
committed by Kubernetes Publisher
parent 191e5dc23b
commit b9fa896d5d
6 changed files with 89 additions and 51 deletions

View File

@@ -34,6 +34,7 @@ import (
"k8s.io/client-go/kubernetes/scheme"
restclient "k8s.io/client-go/rest"
ref "k8s.io/client-go/tools/reference"
testclocks "k8s.io/utils/clock/testing"
)
type testEventSink struct {
@@ -438,7 +439,7 @@ func TestWriteEventError(t *testing.T) {
},
}
clock := clock.IntervalClock{Time: time.Now(), Duration: time.Second}
clock := testclocks.SimpleIntervalClock{Time: time.Now(), Duration: time.Second}
eventCorrelator := NewEventCorrelator(&clock)
for caseName, ent := range table {
@@ -461,7 +462,7 @@ func TestWriteEventError(t *testing.T) {
}
func TestUpdateExpiredEvent(t *testing.T) {
clock := clock.IntervalClock{Time: time.Now(), Duration: time.Second}
clock := testclocks.SimpleIntervalClock{Time: time.Now(), Duration: time.Second}
eventCorrelator := NewEventCorrelator(&clock)
var createdEvent *v1.Event