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etcdserver: add memberReplaceLearnerTest to improve testing coverage

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Signed-off-by: NitishKumar06 <justnitish06@gmail.com>

get learner member id

Signed-off-by: NitishKumar06 <justnitish06@gmail.com>

get learner member id

Signed-off-by: NitishKumar06 <justnitish06@gmail.com>

check for edge case

Signed-off-by: NitishKumar06 <justnitish06@gmail.com>

modify testcase to use var declaration

Signed-off-by: NitishKumar06 <justnitish06@gmail.com>

remove shadow delcaration of variables

Signed-off-by: NitishKumar06 <justnitish06@gmail.com>

resolve minor fixes

Signed-off-by: NitishKumar06 <justnitish06@gmail.com>
This commit is contained in:
NitishKumar06 2024-01-20 18:52:17 +05:30
parent ef70b13b3a
commit 70cc19aad5
1 changed files with 77 additions and 0 deletions
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77
tests/e2e/ctl_v3_member_no_proxy_test.go
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@ -97,3 +97,80 @@ func TestMemberReplace(t *testing.T) {
}
})
}
func TestMemberReplaceWithLearner(t *testing.T) {
e2e.BeforeTest(t)
ctx, cancel := context.WithTimeout(context.Background(), 20*time.Second)
defer cancel()
epc, err := e2e.NewEtcdProcessCluster(ctx, t)
require.NoError(t, err)
defer epc.Close()
memberIdx := rand.Int() % len(epc.Procs)
member := epc.Procs[memberIdx]
memberName := member.Config().Name
var endpoints []string
for i := 1; i < len(epc.Procs); i++ {
endpoints = append(endpoints, epc.Procs[(memberIdx+i)%len(epc.Procs)].EndpointsGRPC()...)
}
cc, err := e2e.NewEtcdctl(epc.Cfg.Client, endpoints)
require.NoError(t, err)
memberID, found, err := getMemberIdByName(ctx, cc, memberName)
require.NoError(t, err)
require.Equal(t, true, found, "Member not found")
// Need to wait health interval for cluster to accept member changes
time.Sleep(etcdserver.HealthInterval)
t.Logf("Removing member %s", memberName)
_, err = cc.MemberRemove(ctx, memberID)
require.NoError(t, err)
_, found, err = getMemberIdByName(ctx, cc, memberName)
require.NoError(t, err)
require.Equal(t, false, found, "Expected member to be removed")
for member.IsRunning() {
err = member.Wait(ctx)
if err != nil && !strings.Contains(err.Error(), "unexpected exit code") {
t.Fatalf("member didn't exit as expected: %v", err)
}
}
t.Logf("Removing member %s data", memberName)
err = os.RemoveAll(member.Config().DataDirPath)
require.NoError(t, err)
t.Logf("Adding member %s back as Learner", memberName)
removedMemberPeerUrl := member.Config().PeerURL.String()
_, err = cc.MemberAddAsLearner(ctx, memberName, []string{removedMemberPeerUrl})
require.NoError(t, err)
err = patchArgs(member.Config().Args, "initial-cluster-state", "existing")
require.NoError(t, err)
// Sleep 100ms to bypass the known issue https://github.com/etcd-io/etcd/issues/16687.
time.Sleep(100 * time.Millisecond)
t.Logf("Starting member %s", memberName)
err = member.Start(ctx)
require.NoError(t, err)
var learnMemberID uint64
testutils.ExecuteUntil(ctx, t, func() {
for {
learnMemberID, found, err = getMemberIdByName(ctx, cc, memberName)
if err != nil || !found {
time.Sleep(10 * time.Millisecond)
continue
}
break
}
})
learnMemberID, found, err = getMemberIdByName(ctx, cc, memberName)
require.NoError(t, err)
require.Equal(t, true, found, "Member not found")
_, err = cc.MemberPromote(ctx, learnMemberID)
require.NoError(t, err)
}