mirror of
https://github.com/etcd-io/etcd.git
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Merge pull request #9198 from gyuho/snapshot-test
snapshot: add "snapshot" restore/save/member-add tests
This commit is contained in:
Gyuho Lee
GitHub
commit
131da29c63
21
pkg/testutil/var.go
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21
pkg/testutil/var.go
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// Copyright 2018 The etcd Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package testutil
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import "time"
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var (
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RequestTimeout = 3 * time.Second
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)
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117
snapshot/member_test.go
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117
snapshot/member_test.go
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// Copyright 2018 The etcd Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package snapshot
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import (
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"context"
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"fmt"
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"os"
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"path/filepath"
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"testing"
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"time"
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"github.com/coreos/etcd/clientv3"
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"github.com/coreos/etcd/embed"
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"github.com/coreos/etcd/etcdserver"
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"github.com/coreos/etcd/pkg/testutil"
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)
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// TestSnapshotV3RestoreMultiMemberAdd ensures that multiple members
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// can boot into the same cluster after being restored from a same
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// snapshot file, and also be able to add another member to the cluster.
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func TestSnapshotV3RestoreMultiMemberAdd(t *testing.T) {
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kvs := []kv{{"foo1", "bar1"}, {"foo2", "bar2"}, {"foo3", "bar3"}}
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dbPath := createSnapshotFile(t, kvs)
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clusterN := 3
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cURLs, pURLs, srvs := restoreCluster(t, clusterN, dbPath)
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defer func() {
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for i := 0; i < clusterN; i++ {
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os.RemoveAll(srvs[i].Config().Dir)
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srvs[i].Close()
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}
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}()
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// wait for health interval + leader election
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time.Sleep(etcdserver.HealthInterval + 2*time.Second)
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cli, err := clientv3.New(clientv3.Config{Endpoints: []string{cURLs[0].String()}})
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if err != nil {
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t.Fatal(err)
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}
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defer cli.Close()
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urls := newEmbedURLs(2)
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newCURLs, newPURLs := urls[:1], urls[1:]
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if _, err = cli.MemberAdd(context.Background(), []string{newPURLs[0].String()}); err != nil {
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t.Fatal(err)
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}
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cfg := embed.NewConfig()
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cfg.Name = "3"
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cfg.InitialClusterToken = testClusterTkn
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cfg.ClusterState = "existing"
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cfg.LCUrls, cfg.ACUrls = newCURLs, newCURLs
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cfg.LPUrls, cfg.APUrls = newPURLs, newPURLs
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cfg.InitialCluster = ""
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for i := 0; i < clusterN; i++ {
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cfg.InitialCluster += fmt.Sprintf(",%d=%s", i, pURLs[i].String())
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}
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cfg.InitialCluster = cfg.InitialCluster[1:]
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cfg.InitialCluster += fmt.Sprintf(",%s=%s", cfg.Name, newPURLs[0].String())
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cfg.Dir = filepath.Join(os.TempDir(), fmt.Sprint(time.Now().Nanosecond()))
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srv, err := embed.StartEtcd(cfg)
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if err != nil {
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t.Fatal(err)
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}
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defer func() {
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os.RemoveAll(cfg.Dir)
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srv.Close()
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}()
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select {
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case <-srv.Server.ReadyNotify():
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case <-time.After(10 * time.Second):
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t.Fatalf("failed to start the newly added etcd member")
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}
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cli2, err := clientv3.New(clientv3.Config{Endpoints: []string{newCURLs[0].String()}})
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if err != nil {
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t.Fatal(err)
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}
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defer cli2.Close()
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ctx, cancel := context.WithTimeout(context.Background(), testutil.RequestTimeout)
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mresp, err := cli2.MemberList(ctx)
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cancel()
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if err != nil {
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t.Fatal(err)
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}
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if len(mresp.Members) != 4 {
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t.Fatalf("expected 4 members, got %+v", mresp)
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}
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for i := range kvs {
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var gresp *clientv3.GetResponse
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ctx, cancel = context.WithTimeout(context.Background(), testutil.RequestTimeout)
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gresp, err = cli2.Get(ctx, kvs[i].k)
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cancel()
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if err != nil {
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t.Fatal(err)
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}
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if string(gresp.Kvs[0].Value) != kvs[i].v {
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t.Fatalf("#%d: value expected %s, got %s", i, kvs[i].v, string(gresp.Kvs[0].Value))
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}
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}
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}
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281
snapshot/v3_snapshot_test.go
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281
snapshot/v3_snapshot_test.go
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@ -0,0 +1,281 @@
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// Copyright 2018 The etcd Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package snapshot
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import (
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"context"
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"fmt"
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"math/rand"
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"net/url"
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"os"
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"path/filepath"
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"testing"
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"time"
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"github.com/coreos/etcd/clientv3"
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"github.com/coreos/etcd/embed"
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"github.com/coreos/etcd/pkg/logger"
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"github.com/coreos/etcd/pkg/testutil"
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"github.com/coreos/etcd/pkg/types"
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"github.com/coreos/pkg/capnslog"
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)
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// TestSnapshotV3RestoreSingle tests single node cluster restoring
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// from a snapshot file.
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func TestSnapshotV3RestoreSingle(t *testing.T) {
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kvs := []kv{{"foo1", "bar1"}, {"foo2", "bar2"}, {"foo3", "bar3"}}
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dbPath := createSnapshotFile(t, kvs)
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defer os.RemoveAll(dbPath)
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clusterN := 1
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urls := newEmbedURLs(clusterN * 2)
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cURLs, pURLs := urls[:clusterN], urls[clusterN:]
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cfg := embed.NewConfig()
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cfg.Name = "s1"
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cfg.InitialClusterToken = testClusterTkn
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cfg.ClusterState = "existing"
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cfg.LCUrls, cfg.ACUrls = cURLs, cURLs
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cfg.LPUrls, cfg.APUrls = pURLs, pURLs
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cfg.InitialCluster = fmt.Sprintf("%s=%s", cfg.Name, pURLs[0].String())
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cfg.Dir = filepath.Join(os.TempDir(), fmt.Sprint(time.Now().Nanosecond()))
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sp := NewV3(nil, logger.NewPackageLogger(capnslog.NewPackageLogger("github.com/coreos/etcd", "snapshot")))
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err := sp.Restore(dbPath, RestoreConfig{})
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if err.Error() != `couldn't find local name "" in the initial cluster configuration` {
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t.Fatalf("expected restore error, got %v", err)
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}
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var iURLs types.URLsMap
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iURLs, err = types.NewURLsMap(cfg.InitialCluster)
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if err != nil {
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t.Fatal(err)
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}
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if err = sp.Restore(dbPath, RestoreConfig{
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Name: cfg.Name,
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OutputDataDir: cfg.Dir,
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InitialCluster: iURLs,
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InitialClusterToken: cfg.InitialClusterToken,
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PeerURLs: pURLs,
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}); err != nil {
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t.Fatal(err)
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}
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var srv *embed.Etcd
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srv, err = embed.StartEtcd(cfg)
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if err != nil {
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t.Fatal(err)
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}
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defer func() {
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os.RemoveAll(cfg.Dir)
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srv.Close()
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}()
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select {
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case <-srv.Server.ReadyNotify():
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case <-time.After(3 * time.Second):
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t.Fatalf("failed to start restored etcd member")
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}
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var cli *clientv3.Client
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cli, err = clientv3.New(clientv3.Config{Endpoints: []string{cfg.ACUrls[0].String()}})
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if err != nil {
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t.Fatal(err)
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}
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defer cli.Close()
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for i := range kvs {
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var gresp *clientv3.GetResponse
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gresp, err = cli.Get(context.Background(), kvs[i].k)
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if err != nil {
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t.Fatal(err)
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}
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if string(gresp.Kvs[0].Value) != kvs[i].v {
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t.Fatalf("#%d: value expected %s, got %s", i, kvs[i].v, string(gresp.Kvs[0].Value))
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}
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}
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}
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// TestSnapshotV3RestoreMulti ensures that multiple members
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// can boot into the same cluster after being restored from a same
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// snapshot file.
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func TestSnapshotV3RestoreMulti(t *testing.T) {
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kvs := []kv{{"foo1", "bar1"}, {"foo2", "bar2"}, {"foo3", "bar3"}}
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dbPath := createSnapshotFile(t, kvs)
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defer os.RemoveAll(dbPath)
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clusterN := 3
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cURLs, _, srvs := restoreCluster(t, clusterN, dbPath)
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defer func() {
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for i := 0; i < clusterN; i++ {
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os.RemoveAll(srvs[i].Config().Dir)
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srvs[i].Close()
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}
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}()
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// wait for leader election
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time.Sleep(time.Second)
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for i := 0; i < clusterN; i++ {
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cli, err := clientv3.New(clientv3.Config{Endpoints: []string{cURLs[i].String()}})
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if err != nil {
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t.Fatal(err)
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}
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defer cli.Close()
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for i := range kvs {
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var gresp *clientv3.GetResponse
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gresp, err = cli.Get(context.Background(), kvs[i].k)
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if err != nil {
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t.Fatal(err)
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}
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if string(gresp.Kvs[0].Value) != kvs[i].v {
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t.Fatalf("#%d: value expected %s, got %s", i, kvs[i].v, string(gresp.Kvs[0].Value))
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}
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}
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}
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}
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type kv struct {
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k, v string
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}
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// creates a snapshot file and returns the file path.
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func createSnapshotFile(t *testing.T, kvs []kv) string {
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clusterN := 1
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urls := newEmbedURLs(clusterN * 2)
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cURLs, pURLs := urls[:clusterN], urls[clusterN:]
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cfg := embed.NewConfig()
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cfg.Name = "default"
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cfg.ClusterState = "new"
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cfg.LCUrls, cfg.ACUrls = cURLs, cURLs
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cfg.LPUrls, cfg.APUrls = pURLs, pURLs
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cfg.InitialCluster = fmt.Sprintf("%s=%s", cfg.Name, pURLs[0].String())
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cfg.Dir = filepath.Join(os.TempDir(), fmt.Sprint(time.Now().Nanosecond()))
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srv, err := embed.StartEtcd(cfg)
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if err != nil {
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t.Fatal(err)
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}
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defer func() {
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os.RemoveAll(cfg.Dir)
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srv.Close()
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}()
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select {
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case <-srv.Server.ReadyNotify():
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case <-time.After(3 * time.Second):
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t.Fatalf("failed to start embed.Etcd for creating snapshots")
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}
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cli, err := clientv3.New(clientv3.Config{Endpoints: []string{cfg.ACUrls[0].String()}})
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if err != nil {
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t.Fatal(err)
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}
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for i := range kvs {
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ctx, cancel := context.WithTimeout(context.Background(), testutil.RequestTimeout)
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_, err = cli.Put(ctx, kvs[i].k, kvs[i].v)
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cancel()
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if err != nil {
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t.Fatal(err)
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}
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}
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sp := NewV3(cli, logger.NewPackageLogger(capnslog.NewPackageLogger("github.com/coreos/etcd", "snapshot")))
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dpPath := filepath.Join(os.TempDir(), fmt.Sprintf("snapshot%d.db", time.Now().Nanosecond()))
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if err = sp.Save(context.Background(), dpPath); err != nil {
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t.Fatal(err)
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}
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os.RemoveAll(cfg.Dir)
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srv.Close()
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return dpPath
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}
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const testClusterTkn = "tkn"
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func restoreCluster(t *testing.T, clusterN int, dbPath string) (
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cURLs []url.URL,
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pURLs []url.URL,
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srvs []*embed.Etcd) {
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urls := newEmbedURLs(clusterN * 2)
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cURLs, pURLs = urls[:clusterN], urls[clusterN:]
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ics := ""
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for i := 0; i < clusterN; i++ {
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ics += fmt.Sprintf(",%d=%s", i, pURLs[i].String())
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}
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ics = ics[1:]
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iURLs, err := types.NewURLsMap(ics)
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if err != nil {
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t.Fatal(err)
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}
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cfgs := make([]*embed.Config, clusterN)
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for i := 0; i < clusterN; i++ {
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cfg := embed.NewConfig()
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cfg.Name = fmt.Sprintf("%d", i)
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cfg.InitialClusterToken = testClusterTkn
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cfg.ClusterState = "existing"
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cfg.LCUrls, cfg.ACUrls = []url.URL{cURLs[i]}, []url.URL{cURLs[i]}
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cfg.LPUrls, cfg.APUrls = []url.URL{pURLs[i]}, []url.URL{pURLs[i]}
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cfg.InitialCluster = ics
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cfg.Dir = filepath.Join(os.TempDir(), fmt.Sprint(time.Now().Nanosecond()+i))
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sp := NewV3(nil, logger.NewPackageLogger(capnslog.NewPackageLogger("github.com/coreos/etcd", "snapshot")))
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if err := sp.Restore(dbPath, RestoreConfig{
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Name: cfg.Name,
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OutputDataDir: cfg.Dir,
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InitialCluster: iURLs,
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InitialClusterToken: cfg.InitialClusterToken,
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PeerURLs: types.URLs{pURLs[i]},
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}); err != nil {
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t.Fatal(err)
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}
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cfgs[i] = cfg
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}
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sch := make(chan *embed.Etcd)
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for i := range cfgs {
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go func(idx int) {
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srv, err := embed.StartEtcd(cfgs[idx])
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if err != nil {
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t.Fatal(err)
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}
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<-srv.Server.ReadyNotify()
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sch <- srv
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}(i)
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}
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srvs = make([]*embed.Etcd, clusterN)
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for i := 0; i < clusterN; i++ {
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select {
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case srv := <-sch:
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srvs[i] = srv
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case <-time.After(5 * time.Second):
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t.Fatalf("#%d: failed to start embed.Etcd", i)
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}
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}
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return cURLs, pURLs, srvs
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}
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// TODO: TLS
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func newEmbedURLs(n int) (urls []url.URL) {
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urls = make([]url.URL, n)
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for i := 0; i < n; i++ {
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rand.Seed(int64(time.Now().Nanosecond()))
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u, _ := url.Parse(fmt.Sprintf("unix://localhost:%d", rand.Intn(45000)))
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urls[i] = *u
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}
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return urls
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}
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