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snapshot: add "snapshot" restore/save/member-add tests
Signed-off-by: Gyuho Lee <gyuhox@gmail.com>
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// 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. | ||
|
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package snapshot | ||
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import ( | ||
"context" | ||
"fmt" | ||
"os" | ||
"path/filepath" | ||
"testing" | ||
"time" | ||
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"github.com/coreos/etcd/clientv3" | ||
"github.com/coreos/etcd/embed" | ||
"github.com/coreos/etcd/etcdserver" | ||
) | ||
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// 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) | ||
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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() | ||
} | ||
}() | ||
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// wait for health interval + leader election | ||
time.Sleep(etcdserver.HealthInterval + 2*time.Second) | ||
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cli, err := clientv3.New(clientv3.Config{Endpoints: []string{cURLs[0].String()}}) | ||
if err != nil { | ||
t.Fatal(err) | ||
} | ||
defer cli.Close() | ||
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urls := newEmbedURLs(2) | ||
newCURLs, newPURLs := urls[:1], urls[1:] | ||
if _, err = cli.MemberAdd(context.Background(), []string{newPURLs[0].String()}); err != nil { | ||
t.Fatal(err) | ||
} | ||
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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())) | ||
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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") | ||
} | ||
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cli2, err := clientv3.New(clientv3.Config{Endpoints: []string{newCURLs[0].String()}}) | ||
if err != nil { | ||
t.Fatal(err) | ||
} | ||
defer cli2.Close() | ||
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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)) | ||
} | ||
} | ||
} |
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// 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. | ||
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package snapshot | ||
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import ( | ||
"context" | ||
"fmt" | ||
"math/rand" | ||
"net/url" | ||
"os" | ||
"path/filepath" | ||
"testing" | ||
"time" | ||
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"github.com/coreos/etcd/clientv3" | ||
"github.com/coreos/etcd/embed" | ||
"github.com/coreos/etcd/pkg/logger" | ||
"github.com/coreos/etcd/pkg/types" | ||
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"github.com/coreos/pkg/capnslog" | ||
) | ||
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// 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) | ||
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clusterN := 1 | ||
urls := newEmbedURLs(clusterN * 2) | ||
cURLs, pURLs := urls[:clusterN], urls[clusterN:] | ||
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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())) | ||
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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{}) | ||
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) | ||
} | ||
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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") | ||
} | ||
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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)) | ||
} | ||
} | ||
} | ||
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// 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) | ||
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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() | ||
} | ||
}() | ||
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// wait for leader election | ||
time.Sleep(time.Second) | ||
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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)) | ||
} | ||
} | ||
} | ||
} | ||
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type kv struct { | ||
k, v string | ||
} | ||
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func createSnapshot(t *testing.T, kvs []kv) string { | ||
clusterN := 1 | ||
urls := newEmbedURLs(clusterN * 2) | ||
cURLs, pURLs := urls[:clusterN], urls[clusterN:] | ||
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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") | ||
} | ||
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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) | ||
} | ||
} | ||
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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) | ||
} | ||
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os.RemoveAll(cfg.Dir) | ||
srv.Close() | ||
return dpPath | ||
} | ||
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const testClusterTkn = "tkn" | ||
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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:] | ||
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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) | ||
} | ||
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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)) | ||
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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 | ||
} | ||
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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) | ||
} | ||
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<-srv.Server.ReadyNotify() | ||
sch <- srv | ||
}(i) | ||
} | ||
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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 | ||
} | ||
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// 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 | ||
} |