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Signed-off-by: Siyuan Zhang <sizhang@google.com>
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| Original file line number | Diff line number | Diff line change |
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| // Copyright 2024 The etcd Authors | ||
| // | ||
| // 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 e2e | ||
|
|
||
| import ( | ||
| "encoding/json" | ||
| "fmt" | ||
| "strings" | ||
| "testing" | ||
| "time" | ||
|
|
||
| "github.com/coreos/go-semver/semver" | ||
| "github.com/stretchr/testify/assert" | ||
| "github.com/stretchr/testify/require" | ||
| "go.uber.org/zap" | ||
|
|
||
| "go.etcd.io/etcd/api/v3/version" | ||
| "go.etcd.io/etcd/client/pkg/v3/fileutil" | ||
| clientv3 "go.etcd.io/etcd/client/v3" | ||
| "go.etcd.io/etcd/server/v3/datadir" | ||
| "go.etcd.io/etcd/server/v3/etcdserver" | ||
| "go.etcd.io/etcd/server/v3/etcdserver/api/snap" | ||
| "go.etcd.io/etcd/tests/v3/framework/e2e" | ||
| "go.etcd.io/etcd/tests/v3/testutils" | ||
| ) | ||
|
|
||
| func TestDowngradeUpgradeClusterOf1(t *testing.T) { | ||
| testDowngradeUpgrade(t, 1, false) | ||
| } | ||
|
|
||
| func TestDowngradeUpgradeClusterOf3(t *testing.T) { | ||
| testDowngradeUpgrade(t, 3, false) | ||
| } | ||
|
|
||
| func TestDowngradeUpgradeClusterOf1WithSnapshot(t *testing.T) { | ||
| testDowngradeUpgrade(t, 1, true) | ||
| } | ||
|
|
||
| func TestDowngradeUpgradeClusterOf3WithSnapshot(t *testing.T) { | ||
| testDowngradeUpgrade(t, 3, true) | ||
| } | ||
|
|
||
| func testDowngradeUpgrade(t *testing.T, clusterSize int, triggerSnapshot bool) { | ||
| currentEtcdBinary := e2e.BinPath | ||
| lastReleaseBinary := e2e.BinPathLastRelease | ||
| if !fileutil.Exist(lastReleaseBinary) { | ||
| t.Skipf("%q does not exist", lastReleaseBinary) | ||
| } | ||
|
|
||
| currentVersion, err := e2e.GetVersionFromBinary(currentEtcdBinary) | ||
| require.NoError(t, err) | ||
| // wipe any pre-release suffix like -alpha.0 we see commonly in builds | ||
| currentVersion.PreRelease = "" | ||
|
|
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| lastVersion, err := e2e.GetVersionFromBinary(lastReleaseBinary) | ||
| require.NoError(t, err) | ||
|
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| require.Equalf(t, lastVersion.Minor, currentVersion.Minor-1, "unexpected minor version difference") | ||
| currentVersionStr := currentVersion.String() | ||
| lastVersionStr := lastVersion.String() | ||
|
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| currentClusterVersion := semver.New(currentVersionStr) | ||
| currentClusterVersion.Patch = 0 | ||
| currentClusterVersionStr := currentClusterVersion.String() | ||
|
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| lastClusterVersion := semver.New(lastVersionStr) | ||
| lastClusterVersion.Patch = 0 | ||
| lastClusterVersionStr := lastClusterVersion.String() | ||
|
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| e2e.BeforeTest(t) | ||
|
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| t.Logf("Create cluster with version %s", currentVersionStr) | ||
| snapshotCount := 10 | ||
| epc := newCluster(t, clusterSize, snapshotCount) | ||
| for i := 0; i < len(epc.Procs); i++ { | ||
| validateVersion(t, epc.Cfg, epc.Procs[i], version.Versions{ | ||
| Cluster: currentClusterVersionStr, | ||
| Server: version.Version, | ||
| }) | ||
| } | ||
| cc := epc.Etcdctl() | ||
| t.Logf("Cluster created") | ||
| if len(epc.Procs) > 1 { | ||
| t.Log("Waiting health interval to required to make membership changes") | ||
| time.Sleep(etcdserver.HealthInterval) | ||
| } | ||
|
|
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| t.Log("Adding member to test membership, but a learner avoid breaking quorum") | ||
| resp, err := cc.MemberAddAsLearner("fake1", []string{"http://127.0.0.1:1001"}) | ||
| require.NoError(t, err) | ||
| if triggerSnapshot { | ||
| t.Logf("Generating snapshot") | ||
| generateSnapshot(t, snapshotCount, cc) | ||
| verifySnapshot(t, epc) | ||
| } | ||
| t.Log("Removing learner to test membership") | ||
| _, err = cc.MemberRemove(resp.Member.ID) | ||
| require.NoError(t, err) | ||
| beforeMembers, beforeKV := getMembersAndKeys(t, cc) | ||
|
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| t.Logf("Starting downgrade process to %q", lastVersionStr) | ||
| for i := 0; i < len(epc.Procs); i++ { | ||
| t.Logf("Downgrading member %d by running %s binary", i, lastReleaseBinary) | ||
| stopEtcd(t, epc.Procs[i]) | ||
| startEtcd(t, epc.Procs[i], lastReleaseBinary) | ||
| } | ||
|
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| t.Log("All members downgraded, validating downgrade") | ||
| for i := 0; i < len(epc.Procs); i++ { | ||
| validateVersion(t, epc.Cfg, epc.Procs[i], version.Versions{ | ||
| Cluster: lastClusterVersionStr, | ||
| Server: lastVersionStr, | ||
| }) | ||
| } | ||
|
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| t.Log("Downgrade complete") | ||
| afterMembers, afterKV := getMembersAndKeys(t, cc) | ||
| assert.Equal(t, beforeKV.Kvs, afterKV.Kvs) | ||
| assert.Equal(t, beforeMembers.Members, afterMembers.Members) | ||
|
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| if len(epc.Procs) > 1 { | ||
| t.Log("Waiting health interval to required to make membership changes") | ||
| time.Sleep(etcdserver.HealthInterval) | ||
| } | ||
| t.Log("Adding learner to test membership, but avoid breaking quorum") | ||
| resp, err = cc.MemberAddAsLearner("fake2", []string{"http://127.0.0.1:1002"}) | ||
| require.NoError(t, err) | ||
| if triggerSnapshot { | ||
| t.Logf("Generating snapshot") | ||
| generateSnapshot(t, snapshotCount, cc) | ||
| verifySnapshot(t, epc) | ||
| } | ||
| t.Log("Removing learner to test membership") | ||
| _, err = cc.MemberRemove(resp.Member.ID) | ||
| require.NoError(t, err) | ||
| beforeMembers, beforeKV = getMembersAndKeys(t, cc) | ||
|
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| t.Logf("Starting upgrade process to %q", currentVersionStr) | ||
| for i := 0; i < len(epc.Procs); i++ { | ||
| t.Logf("Upgrading member %d", i) | ||
| stopEtcd(t, epc.Procs[i]) | ||
| startEtcd(t, epc.Procs[i], currentEtcdBinary) | ||
| // NOTE: The leader has monitor to the cluster version, which will | ||
| // update cluster version. We don't need to check the transient | ||
| // version just in case that it might be flaky. | ||
| } | ||
|
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| t.Log("All members upgraded, validating upgrade") | ||
| for i := 0; i < len(epc.Procs); i++ { | ||
| validateVersion(t, epc.Cfg, epc.Procs[i], version.Versions{ | ||
| Cluster: currentClusterVersionStr, | ||
| Server: version.Version, | ||
| }) | ||
| } | ||
| t.Log("Upgrade complete") | ||
|
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| afterMembers, afterKV = getMembersAndKeys(t, cc) | ||
| assert.Equal(t, beforeKV.Kvs, afterKV.Kvs) | ||
| assert.Equal(t, beforeMembers.Members, afterMembers.Members) | ||
| } | ||
|
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| func newCluster(t *testing.T, clusterSize int, snapshotCount int) *e2e.EtcdProcessCluster { | ||
| copiedCfg := e2e.NewConfigNoTLS() | ||
| copiedCfg.ClusterSize = clusterSize | ||
| copiedCfg.SnapshotCount = snapshotCount | ||
| copiedCfg.KeepDataDir = true | ||
| copiedCfg.BasePeerScheme = "unix" // to avoid port conflict | ||
|
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| epc, err := e2e.NewEtcdProcessCluster(t, copiedCfg) | ||
| if err != nil { | ||
| t.Fatalf("could not start etcd process cluster (%v)", err) | ||
| } | ||
| t.Cleanup(func() { | ||
| if errC := epc.Close(); errC != nil { | ||
| t.Fatalf("error closing etcd processes (%v)", errC) | ||
| } | ||
| }) | ||
| return epc | ||
| } | ||
|
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| func startEtcd(t *testing.T, ep e2e.EtcdProcess, execPath string) { | ||
| ep.Config().ExecPath = execPath | ||
| if execPath == e2e.BinPathLastRelease { | ||
| ep.Config().Args = addOrRemoveArg(ep.Config().Args, "--next-cluster-version-compatible", true) | ||
| } else { | ||
| ep.Config().Args = addOrRemoveArg(ep.Config().Args, "--next-cluster-version-compatible", false) | ||
| } | ||
| err := ep.Restart() | ||
| if err != nil { | ||
| t.Fatalf("could not start etcd process cluster (%v)", err) | ||
| } | ||
| } | ||
|
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| func addOrRemoveArg(args []string, arg string, isAdd bool) []string { | ||
| newArgs := []string{} | ||
| for _, s := range args { | ||
| if s != arg { | ||
| newArgs = append(newArgs, s) | ||
| } | ||
| } | ||
| if isAdd { | ||
| newArgs = append(newArgs, arg) | ||
| } | ||
| return newArgs | ||
| } | ||
|
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| func stopEtcd(t *testing.T, ep e2e.EtcdProcess) { | ||
| if err := ep.Stop(); err != nil { | ||
| t.Fatal(err) | ||
| } | ||
| } | ||
|
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| func validateVersion(t *testing.T, cfg *e2e.EtcdProcessClusterConfig, member e2e.EtcdProcess, expect version.Versions) { | ||
| testutils.ExecuteWithTimeout(t, 30*time.Second, func() { | ||
| for { | ||
| result, err := getMemberVersionByCurl(cfg, member) | ||
| if err != nil { | ||
| cfg.Logger.Warn("failed to get member version and retrying", zap.Error(err), zap.String("member", member.Config().Name)) | ||
| time.Sleep(time.Second) | ||
| continue | ||
| } | ||
| cfg.Logger.Info("Comparing versions", zap.String("member", member.Config().Name), zap.Any("got", result), zap.Any("want", expect)) | ||
| if err := compareMemberVersion(expect, result); err != nil { | ||
| cfg.Logger.Warn("Versions didn't match retrying", zap.Error(err), zap.String("member", member.Config().Name)) | ||
| time.Sleep(time.Second) | ||
| continue | ||
| } | ||
| cfg.Logger.Info("Versions match", zap.String("member", member.Config().Name)) | ||
| break | ||
| } | ||
| }) | ||
| } | ||
|
|
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| func compareMemberVersion(expect version.Versions, target version.Versions) error { | ||
| if expect.Server != "" && expect.Server != target.Server { | ||
| return fmt.Errorf("expect etcdserver version %v, but got %v", expect.Server, target.Server) | ||
| } | ||
|
|
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| if expect.Cluster != "" && expect.Cluster != target.Cluster { | ||
| return fmt.Errorf("expect etcdcluster version %v, but got %v", expect.Cluster, target.Cluster) | ||
| } | ||
|
|
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| return nil | ||
| } | ||
|
|
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| func getMemberVersionByCurl(cfg *e2e.EtcdProcessClusterConfig, member e2e.EtcdProcess) (version.Versions, error) { | ||
| args := e2e.CURLPrefixArgsCluster(cfg, member, "GET", e2e.CURLReq{Endpoint: "/version"}) | ||
| lines, err := e2e.RunUtilCompletion(args, nil) | ||
| if err != nil { | ||
| return version.Versions{}, err | ||
| } | ||
|
|
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| data := strings.Join(lines, "\n") | ||
| result := version.Versions{} | ||
| if err := json.Unmarshal([]byte(data), &result); err != nil { | ||
| return version.Versions{}, fmt.Errorf("failed to unmarshal (%v): %w", data, err) | ||
| } | ||
| return result, nil | ||
| } | ||
|
|
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| func generateSnapshot(t *testing.T, snapshotCount int, cc *e2e.Etcdctl) { | ||
| t.Logf("Adding keys") | ||
| for i := 0; i < snapshotCount*3; i++ { | ||
| err := cc.Put(fmt.Sprintf("%d", i), "1") | ||
| assert.NoError(t, err) | ||
| } | ||
| } | ||
|
|
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| func verifySnapshot(t *testing.T, epc *e2e.EtcdProcessCluster) { | ||
| for i := range epc.Procs { | ||
| t.Logf("Verifying snapshot for member %d", i) | ||
| ss := snap.New(epc.Cfg.Logger, datadir.ToSnapDir(epc.Procs[i].Config().DataDirPath)) | ||
| _, err := ss.Load() | ||
| assert.NoError(t, err) | ||
| } | ||
| t.Logf("All members have a valid snapshot") | ||
| } | ||
|
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| func getMembersAndKeys(t *testing.T, cc *e2e.Etcdctl) (*clientv3.MemberListResponse, *clientv3.GetResponse) { | ||
| kvs, err := cc.GetWithPrefix("") | ||
| assert.NoError(t, err) | ||
|
|
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| members, err := cc.MemberList() | ||
| assert.NoError(t, err) | ||
|
|
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| return members, kvs | ||
| } |
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