-
Notifications
You must be signed in to change notification settings - Fork 18
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Add LeaderElectionSupport for unit testing
Refactored from the submariner project for reuse. Signed-off-by: Tom Pantelis <tompantelis@gmail.com>
- Loading branch information
1 parent
d82a193
commit 383a511
Showing
1 changed file
with
111 additions
and
0 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Original file line number | Diff line number | Diff line change |
---|---|---|
@@ -0,0 +1,111 @@ | ||
/* | ||
SPDX-License-Identifier: Apache-2.0 | ||
Copyright Contributors to the Submariner project. | ||
Licensed under the Apache License, Version 2.0 (the "License"); | ||
you may not use this file except in compliance with the License. | ||
You may obtain a copy of the License at | ||
http://www.apache.org/licenses/LICENSE-2.0 | ||
Unless required by applicable law or agreed to in writing, software | ||
distributed under the License is distributed on an "AS IS" BASIS, | ||
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
See the License for the specific language governing permissions and | ||
limitations under the License. | ||
*/ | ||
|
||
package test | ||
|
||
import ( | ||
"context" | ||
"time" | ||
|
||
. "github.com/onsi/gomega" | ||
"github.com/submariner-io/admiral/pkg/fake" | ||
apierrors "k8s.io/apimachinery/pkg/api/errors" | ||
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" | ||
k8sfake "k8s.io/client-go/kubernetes/fake" | ||
"k8s.io/client-go/tools/leaderelection/resourcelock" | ||
) | ||
|
||
type LeaderElectionSupport struct { | ||
leasesReactor *fake.FailOnActionReactor | ||
kubeClient *k8sfake.Clientset | ||
namespace string | ||
lockName string | ||
} | ||
|
||
func NewLeaderElectionSupport(kubeClient *k8sfake.Clientset, namespace, lockName string) *LeaderElectionSupport { | ||
l := &LeaderElectionSupport{ | ||
kubeClient: kubeClient, | ||
namespace: namespace, | ||
lockName: lockName, | ||
} | ||
|
||
l.leasesReactor = fake.FailOnAction(&l.kubeClient.Fake, "leases", "update", nil, false) | ||
l.leasesReactor.Fail(false) | ||
|
||
return l | ||
} | ||
|
||
func (l *LeaderElectionSupport) FailLease(renewDeadline time.Duration) { | ||
l.leasesReactor.Fail(true) | ||
|
||
// Wait enough time for the renewal deadline to be reached | ||
time.Sleep(renewDeadline + (renewDeadline / 2)) | ||
} | ||
|
||
func (l *LeaderElectionSupport) SucceedLease() { | ||
l.leasesReactor.Fail(false) | ||
} | ||
|
||
func (l *LeaderElectionSupport) GetRecord() *resourcelock.LeaderElectionRecord { | ||
lock, err := resourcelock.New(resourcelock.LeasesResourceLock, l.namespace, l.lockName, | ||
l.kubeClient.CoreV1(), l.kubeClient.CoordinationV1(), resourcelock.ResourceLockConfig{}) | ||
Expect(err).To(Succeed()) | ||
|
||
le, _, err := lock.Get(context.Background()) | ||
if apierrors.IsNotFound(err) { | ||
return nil | ||
} | ||
|
||
Expect(err).To(Succeed()) | ||
|
||
return le | ||
} | ||
|
||
func (l *LeaderElectionSupport) AwaitLeaseAcquired() { | ||
Eventually(func() string { | ||
le := l.GetRecord() | ||
if le == nil { | ||
return "" | ||
} | ||
|
||
return le.HolderIdentity | ||
}, 3).ShouldNot(BeEmpty(), "Leader lock was not acquired") | ||
} | ||
|
||
func (l *LeaderElectionSupport) EnsureLeaseNotAcquired() { | ||
Consistently(func() any { | ||
return l.GetRecord() | ||
}, 300*time.Millisecond).Should(BeNil(), "Leader lock was acquired") | ||
} | ||
|
||
func (l *LeaderElectionSupport) AwaitLeaseReleased() { | ||
Eventually(func() string { | ||
le := l.GetRecord() | ||
Expect(le).ToNot(BeNil(), "LeaderElectionRecord not found") | ||
|
||
return le.HolderIdentity | ||
}, 3).Should(BeEmpty(), "Leader lock was not released") | ||
} | ||
|
||
func (l *LeaderElectionSupport) AwaitLeaseRenewed() { | ||
now := metav1.NewTime(time.Now()) | ||
|
||
Eventually(func() int64 { | ||
return l.GetRecord().RenewTime.UnixNano() | ||
}).Should(BeNumerically(">=", now.UnixNano()), "Lease was not renewed") | ||
} |