diff --git a/snapshot/member_test.go b/snapshot/member_test.go new file mode 100644 index 000000000000..a7a74b7d0366 --- /dev/null +++ b/snapshot/member_test.go @@ -0,0 +1,116 @@ +// Copyright 2018 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 snapshot + +import ( + "context" + "fmt" + "os" + "path/filepath" + "testing" + "time" + + "github.com/coreos/etcd/clientv3" + "github.com/coreos/etcd/embed" + "github.com/coreos/etcd/etcdserver" +) + +// TestSnapshotV3RestoreMultiMemberAdd ensures that multiple members +// can boot into the same cluster after being restored from a same +// snapshot file, and also be able to add another member to the cluster. +func TestSnapshotV3RestoreMultiMemberAdd(t *testing.T) { + kvs := []kv{{"foo1", "bar1"}, {"foo2", "bar2"}, {"foo3", "bar3"}} + dbPath := createSnapshot(t, kvs) + + clusterN := 3 + cURLs, pURLs, srvs := restoreCluster(t, clusterN, dbPath) + defer func() { + for i := 0; i < clusterN; i++ { + os.RemoveAll(srvs[i].Config().Dir) + srvs[i].Close() + } + }() + + // wait for health interval + leader election + time.Sleep(etcdserver.HealthInterval + 2*time.Second) + + cli, err := clientv3.New(clientv3.Config{Endpoints: []string{cURLs[0].String()}}) + if err != nil { + t.Fatal(err) + } + defer cli.Close() + + urls := newEmbedURLs(2) + newCURLs, newPURLs := urls[:1], urls[1:] + if _, err = cli.MemberAdd(context.Background(), []string{newPURLs[0].String()}); err != nil { + t.Fatal(err) + } + + cfg := embed.NewConfig() + cfg.Name = "3" + cfg.InitialClusterToken = testClusterTkn + cfg.ClusterState = "existing" + cfg.LCUrls, cfg.ACUrls = newCURLs, newCURLs + cfg.LPUrls, cfg.APUrls = newPURLs, newPURLs + cfg.InitialCluster = "" + for i := 0; i < clusterN; i++ { + cfg.InitialCluster += fmt.Sprintf(",%d=%s", i, pURLs[i].String()) + } + cfg.InitialCluster = cfg.InitialCluster[1:] + cfg.InitialCluster += fmt.Sprintf(",%s=%s", cfg.Name, newPURLs[0].String()) + cfg.Dir = filepath.Join(os.TempDir(), fmt.Sprint(time.Now().Nanosecond())) + + srv, err := embed.StartEtcd(cfg) + if err != nil { + t.Fatal(err) + } + defer func() { + os.RemoveAll(cfg.Dir) + srv.Close() + }() + select { + case <-srv.Server.ReadyNotify(): + case <-time.After(10 * time.Second): + t.Fatalf("failed to start embed.Etcd") + } + + cli2, err := clientv3.New(clientv3.Config{Endpoints: []string{newCURLs[0].String()}}) + if err != nil { + t.Fatal(err) + } + defer cli2.Close() + + ctx, cancel := context.WithTimeout(context.Background(), 3*time.Second) + mresp, err := cli2.MemberList(ctx) + cancel() + if err != nil { + t.Fatal(err) + } + if len(mresp.Members) != 4 { + t.Fatalf("expected 4 members, got %+v", mresp) + } + for i := range kvs { + var gresp *clientv3.GetResponse + ctx, cancel = context.WithTimeout(context.Background(), 3*time.Second) + gresp, err = cli2.Get(ctx, kvs[i].k) + cancel() + if err != nil { + t.Fatal(err) + } + if string(gresp.Kvs[0].Value) != kvs[i].v { + t.Fatalf("#%d: value expected %s, got %s", i, kvs[i].v, string(gresp.Kvs[0].Value)) + } + } +} diff --git a/snapshot/v3_snapshot_test.go b/snapshot/v3_snapshot_test.go new file mode 100644 index 000000000000..3574818f839a --- /dev/null +++ b/snapshot/v3_snapshot_test.go @@ -0,0 +1,276 @@ +// Copyright 2018 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 snapshot + +import ( + "context" + "fmt" + "math/rand" + "net/url" + "os" + "path/filepath" + "testing" + "time" + + "github.com/coreos/etcd/clientv3" + "github.com/coreos/etcd/embed" + "github.com/coreos/etcd/pkg/logger" + "github.com/coreos/etcd/pkg/types" + + "github.com/coreos/pkg/capnslog" +) + +// TestSnapshotV3RestoreSingle tests single node cluster restoring +// from a snapshot file. +func TestSnapshotV3RestoreSingle(t *testing.T) { + kvs := []kv{{"foo1", "bar1"}, {"foo2", "bar2"}, {"foo3", "bar3"}} + dbPath := createSnapshot(t, kvs) + defer os.RemoveAll(dbPath) + + clusterN := 1 + urls := newEmbedURLs(clusterN * 2) + cURLs, pURLs := urls[:clusterN], urls[clusterN:] + + cfg := embed.NewConfig() + cfg.Name = "s1" + cfg.InitialClusterToken = testClusterTkn + cfg.ClusterState = "existing" + cfg.LCUrls, cfg.ACUrls = cURLs, cURLs + cfg.LPUrls, cfg.APUrls = pURLs, pURLs + cfg.InitialCluster = fmt.Sprintf("%s=%s", cfg.Name, pURLs[0].String()) + cfg.Dir = filepath.Join(os.TempDir(), fmt.Sprint(time.Now().Nanosecond())) + + sp := NewV3(nil, logger.NewPackageLogger(capnslog.NewPackageLogger("github.com/coreos/etcd", "snapshot"))) + + err := sp.Restore(dbPath, RestoreConfig{}) + if err.Error() != `couldn't find local name "" in the initial cluster configuration` { + t.Fatalf("expected restore error, got %v", err) + } + var iURLs types.URLsMap + iURLs, err = types.NewURLsMap(cfg.InitialCluster) + if err != nil { + t.Fatal(err) + } + if err = sp.Restore(dbPath, RestoreConfig{ + Name: cfg.Name, + OutputDataDir: cfg.Dir, + InitialCluster: iURLs, + InitialClusterToken: cfg.InitialClusterToken, + PeerURLs: pURLs, + }); err != nil { + t.Fatal(err) + } + + var srv *embed.Etcd + srv, err = embed.StartEtcd(cfg) + if err != nil { + t.Fatal(err) + } + defer func() { + os.RemoveAll(cfg.Dir) + srv.Close() + }() + select { + case <-srv.Server.ReadyNotify(): + case <-time.After(3 * time.Second): + t.Fatalf("failed to start embed.Etcd") + } + + var cli *clientv3.Client + cli, err = clientv3.New(clientv3.Config{Endpoints: []string{cfg.ACUrls[0].String()}}) + if err != nil { + t.Fatal(err) + } + defer cli.Close() + for i := range kvs { + var gresp *clientv3.GetResponse + gresp, err = cli.Get(context.Background(), kvs[i].k) + if err != nil { + t.Fatal(err) + } + if string(gresp.Kvs[0].Value) != kvs[i].v { + t.Fatalf("#%d: value expected %s, got %s", i, kvs[i].v, string(gresp.Kvs[0].Value)) + } + } +} + +// TestSnapshotV3RestoreMulti ensures that multiple members +// can boot into the same cluster after being restored from a same +// snapshot file. +func TestSnapshotV3RestoreMulti(t *testing.T) { + kvs := []kv{{"foo1", "bar1"}, {"foo2", "bar2"}, {"foo3", "bar3"}} + dbPath := createSnapshot(t, kvs) + defer os.RemoveAll(dbPath) + + clusterN := 3 + cURLs, _, srvs := restoreCluster(t, clusterN, dbPath) + defer func() { + for i := 0; i < clusterN; i++ { + os.RemoveAll(srvs[i].Config().Dir) + srvs[i].Close() + } + }() + + // wait for leader election + time.Sleep(time.Second) + + for i := 0; i < clusterN; i++ { + cli, err := clientv3.New(clientv3.Config{Endpoints: []string{cURLs[i].String()}}) + if err != nil { + t.Fatal(err) + } + defer cli.Close() + for i := range kvs { + var gresp *clientv3.GetResponse + gresp, err = cli.Get(context.Background(), kvs[i].k) + if err != nil { + t.Fatal(err) + } + if string(gresp.Kvs[0].Value) != kvs[i].v { + t.Fatalf("#%d: value expected %s, got %s", i, kvs[i].v, string(gresp.Kvs[0].Value)) + } + } + } +} + +type kv struct { + k, v string +} + +func createSnapshot(t *testing.T, kvs []kv) string { + clusterN := 1 + urls := newEmbedURLs(clusterN * 2) + cURLs, pURLs := urls[:clusterN], urls[clusterN:] + + cfg := embed.NewConfig() + cfg.Name = "default" + cfg.ClusterState = "new" + cfg.LCUrls, cfg.ACUrls = cURLs, cURLs + cfg.LPUrls, cfg.APUrls = pURLs, pURLs + cfg.InitialCluster = fmt.Sprintf("%s=%s", cfg.Name, pURLs[0].String()) + cfg.Dir = filepath.Join(os.TempDir(), fmt.Sprint(time.Now().Nanosecond())) + srv, err := embed.StartEtcd(cfg) + if err != nil { + t.Fatal(err) + } + defer func() { + os.RemoveAll(cfg.Dir) + srv.Close() + }() + select { + case <-srv.Server.ReadyNotify(): + case <-time.After(3 * time.Second): + t.Fatalf("failed to start embed.Etcd") + } + + cli, err := clientv3.New(clientv3.Config{Endpoints: []string{cfg.ACUrls[0].String()}}) + if err != nil { + t.Fatal(err) + } + for i := range kvs { + if _, err = cli.Put(context.Background(), kvs[i].k, kvs[i].v); err != nil { + t.Fatal(err) + } + } + + sp := NewV3(cli, logger.NewPackageLogger(capnslog.NewPackageLogger("github.com/coreos/etcd", "snapshot"))) + dpPath := filepath.Join(os.TempDir(), fmt.Sprintf("snapshot%d.db", time.Now().Nanosecond())) + if err = sp.Save(context.Background(), dpPath); err != nil { + t.Fatal(err) + } + + os.RemoveAll(cfg.Dir) + srv.Close() + return dpPath +} + +const testClusterTkn = "tkn" + +func restoreCluster(t *testing.T, clusterN int, dbPath string) ( + cURLs []url.URL, + pURLs []url.URL, + srvs []*embed.Etcd) { + urls := newEmbedURLs(clusterN * 2) + cURLs, pURLs = urls[:clusterN], urls[clusterN:] + + ics := "" + for i := 0; i < clusterN; i++ { + ics += fmt.Sprintf(",%d=%s", i, pURLs[i].String()) + } + ics = ics[1:] + iURLs, err := types.NewURLsMap(ics) + if err != nil { + t.Fatal(err) + } + + cfgs := make([]*embed.Config, clusterN) + for i := 0; i < clusterN; i++ { + cfg := embed.NewConfig() + cfg.Name = fmt.Sprintf("%d", i) + cfg.InitialClusterToken = testClusterTkn + cfg.ClusterState = "existing" + cfg.LCUrls, cfg.ACUrls = []url.URL{cURLs[i]}, []url.URL{cURLs[i]} + cfg.LPUrls, cfg.APUrls = []url.URL{pURLs[i]}, []url.URL{pURLs[i]} + cfg.InitialCluster = ics + cfg.Dir = filepath.Join(os.TempDir(), fmt.Sprint(time.Now().Nanosecond()+i)) + + sp := NewV3(nil, logger.NewPackageLogger(capnslog.NewPackageLogger("github.com/coreos/etcd", "snapshot"))) + if err := sp.Restore(dbPath, RestoreConfig{ + Name: cfg.Name, + OutputDataDir: cfg.Dir, + InitialCluster: iURLs, + InitialClusterToken: cfg.InitialClusterToken, + PeerURLs: types.URLs{pURLs[i]}, + }); err != nil { + t.Fatal(err) + } + cfgs[i] = cfg + } + + sch := make(chan *embed.Etcd) + for i := range cfgs { + go func(idx int) { + srv, err := embed.StartEtcd(cfgs[idx]) + if err != nil { + t.Fatal(err) + } + + <-srv.Server.ReadyNotify() + sch <- srv + }(i) + } + + srvs = make([]*embed.Etcd, clusterN) + for i := 0; i < clusterN; i++ { + select { + case srv := <-sch: + srvs[i] = srv + case <-time.After(5 * time.Second): + t.Fatalf("#%d: failed to start embed.Etcd", i) + } + } + return cURLs, pURLs, srvs +} + +// TODO: TLS +func newEmbedURLs(n int) (urls []url.URL) { + urls = make([]url.URL, n) + for i := 0; i < n; i++ { + rand.Seed(int64(time.Now().Nanosecond())) + u, _ := url.Parse(fmt.Sprintf("unix://localhost:%d", rand.Intn(45000))) + urls[i] = *u + } + return urls +}