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https://github.com/etcd-io/etcd.git
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30811a06aa
"snapshot" Restore/Status code was the only remaining dependency of client on 'server' code. The code is solelly used by etcdctl. Long-term the snapshot code should be migrated to 'etcdadm' style of tool such that we can distinguish tool solelly depending on networking API vs. tools that operation on etcd files directly. We left snapshot.Save() code in clientv3.snapshot package, such that clients can benefits from automated download&safe to file snapshot functionality over the wire.
128 lines
3.6 KiB
Go
128 lines
3.6 KiB
Go
// 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_test
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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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"go.etcd.io/etcd/v3/clientv3"
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"go.etcd.io/etcd/v3/embed"
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"go.etcd.io/etcd/v3/etcdserver"
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"go.etcd.io/etcd/v3/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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// wait for membership reconfiguration apply
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time.Sleep(testutil.ApplyTimeout)
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cfg := embed.NewConfig()
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cfg.Logger = "zap"
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cfg.LogOutputs = []string{"/dev/null"}
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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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// make sure restored cluster has kept all data on recovery
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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, "foo", clientv3.WithPrefix())
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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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for i := range gresp.Kvs {
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if string(gresp.Kvs[i].Key) != kvs[i].k {
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t.Fatalf("#%d: key expected %s, got %s", i, kvs[i].k, string(gresp.Kvs[i].Key))
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}
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if string(gresp.Kvs[i].Value) != kvs[i].v {
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t.Fatalf("#%d: value expected %s, got %s", i, kvs[i].v, string(gresp.Kvs[i].Value))
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}
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}
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}
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