84 lines
2.7 KiB
Go
84 lines
2.7 KiB
Go
// Copyright 2021-2023 the Pinniped contributors. All Rights Reserved.
|
|
// SPDX-License-Identifier: Apache-2.0
|
|
|
|
package leaderelection
|
|
|
|
import (
|
|
"context"
|
|
"errors"
|
|
"sync/atomic"
|
|
"testing"
|
|
"time"
|
|
|
|
"github.com/stretchr/testify/require"
|
|
coordinationv1 "k8s.io/api/coordination/v1"
|
|
"k8s.io/apimachinery/pkg/runtime"
|
|
kubefake "k8s.io/client-go/kubernetes/fake"
|
|
kubetesting "k8s.io/client-go/testing"
|
|
"k8s.io/client-go/tools/leaderelection"
|
|
"k8s.io/utils/ptr"
|
|
)
|
|
|
|
// see test/integration/leaderelection_test.go for the bulk of the testing related to this code
|
|
|
|
func Test_releaseLock_Update(t *testing.T) {
|
|
tests := []struct {
|
|
name string
|
|
f func(t *testing.T, internalClient *kubefake.Clientset, isLeader *isLeaderTracker, cancel context.CancelFunc)
|
|
}{
|
|
{
|
|
name: "renewal fails on update",
|
|
f: func(t *testing.T, internalClient *kubefake.Clientset, isLeader *isLeaderTracker, cancel context.CancelFunc) {
|
|
internalClient.PrependReactor("update", "*", func(action kubetesting.Action) (handled bool, ret runtime.Object, err error) {
|
|
lease := action.(kubetesting.UpdateAction).GetObject().(*coordinationv1.Lease)
|
|
if len(ptr.Deref(lease.Spec.HolderIdentity, "")) == 0 {
|
|
require.False(t, isLeader.canWrite(), "client must release in-memory leader status before Kube API call")
|
|
}
|
|
return true, nil, errors.New("cannot renew")
|
|
})
|
|
},
|
|
},
|
|
{
|
|
name: "renewal fails due to context",
|
|
f: func(t *testing.T, internalClient *kubefake.Clientset, isLeader *isLeaderTracker, cancel context.CancelFunc) {
|
|
t.Cleanup(func() {
|
|
require.False(t, isLeader.canWrite(), "client must release in-memory leader status when context is canceled")
|
|
})
|
|
start := time.Now()
|
|
internalClient.PrependReactor("update", "*", func(action kubetesting.Action) (handled bool, ret runtime.Object, err error) {
|
|
// keep going for a bit
|
|
if time.Since(start) < 5*time.Second {
|
|
return false, nil, nil
|
|
}
|
|
|
|
cancel()
|
|
return false, nil, nil
|
|
})
|
|
},
|
|
},
|
|
}
|
|
for _, tt := range tests {
|
|
tt := tt
|
|
t.Run(tt.name, func(t *testing.T) {
|
|
t.Parallel()
|
|
|
|
internalClient := kubefake.NewSimpleClientset()
|
|
isLeader := &isLeaderTracker{tracker: &atomic.Bool{}}
|
|
|
|
leaderElectorCtx, cancel := context.WithCancel(context.Background())
|
|
|
|
tt.f(t, internalClient, isLeader, cancel)
|
|
|
|
leaderElectionConfig := newLeaderElectionConfig("ns-001", "lease-001", "foo-001", internalClient, isLeader)
|
|
|
|
// make the tests run quicker
|
|
leaderElectionConfig.LeaseDuration = 2 * time.Second
|
|
leaderElectionConfig.RenewDeadline = 1 * time.Second
|
|
leaderElectionConfig.RetryPeriod = 250 * time.Millisecond
|
|
|
|
// note that this will block until it exits on its own or tt.f calls cancel()
|
|
leaderelection.RunOrDie(leaderElectorCtx, leaderElectionConfig)
|
|
})
|
|
}
|
|
}
|