Example #1
0
func (c *cluster) RemoveMember(t *testing.T, id uint64) {
	// send remove request to the cluster
	cc := mustNewHTTPClient(t, c.URLs())
	ma := client.NewMembersAPI(cc)
	ctx, cancel := context.WithTimeout(context.Background(), requestTimeout)
	if err := ma.Remove(ctx, types.ID(id).String()); err != nil {
		t.Fatalf("unexpected remove error %v", err)
	}
	cancel()
	newMembers := make([]*member, 0)
	for _, m := range c.Members {
		if uint64(m.s.ID()) != id {
			newMembers = append(newMembers, m)
		} else {
			select {
			case <-m.s.StopNotify():
				m.Terminate(t)
			// 1s stop delay + election timeout + 1s disk and network delay + connection write timeout
			// TODO: remove connection write timeout by selecting on http response closeNotifier
			// blocking on https://github.com/golang/go/issues/9524
			case <-time.After(time.Second + time.Duration(electionTicks)*tickDuration + time.Second + rafthttp.ConnWriteTimeout):
				t.Fatalf("failed to remove member %s in time", m.s.ID())
			}
		}
	}
	c.Members = newMembers
	c.waitMembersMatch(t, c.HTTPMembers())
}
Example #2
0
// Ensure etcd will not panic when removing a just started member.
func TestIssue2904(t *testing.T) {
	defer afterTest(t)
	// start 1-member cluster to ensure member 0 is the leader of the cluster.
	c := NewCluster(t, 1)
	c.Launch(t)
	defer c.Terminate(t)

	c.AddMember(t)
	c.Members[1].Stop(t)

	// send remove member-1 request to the cluster.
	cc := mustNewHTTPClient(t, c.URLs())
	ma := client.NewMembersAPI(cc)
	ctx, cancel := context.WithTimeout(context.Background(), requestTimeout)
	// the proposal is not committed because member 1 is stopped, but the
	// proposal is appended to leader's raft log.
	ma.Remove(ctx, c.Members[1].s.ID().String())
	cancel()

	// restart member, and expect it to send updateAttr request.
	// the log in the leader is like this:
	// [..., remove 1, ..., update attr 1, ...]
	c.Members[1].Restart(t)
	// when the member comes back, it ack the proposal to remove itself,
	// and apply it.
	<-c.Members[1].s.StopNotify()

	// terminate removed member
	c.Members[1].Terminate(t)
	c.Members = c.Members[:1]
	// wait member to be removed.
	c.waitMembersMatch(t, c.HTTPMembers())
}
Example #3
0
func (c *cluster) addMember(t *testing.T, usePeerTLS bool) {
	m := mustNewMember(t, c.name(rand.Int()), usePeerTLS)
	scheme := "http"
	if usePeerTLS {
		scheme = "https"
	}

	// send add request to the cluster
	cc := mustNewHTTPClient(t, []string{c.URL(0)})
	ma := client.NewMembersAPI(cc)
	ctx, cancel := context.WithTimeout(context.Background(), requestTimeout)
	peerURL := scheme + "://" + m.PeerListeners[0].Addr().String()
	if _, err := ma.Add(ctx, peerURL); err != nil {
		t.Fatalf("add member on %s error: %v", c.URL(0), err)
	}
	cancel()

	// wait for the add node entry applied in the cluster
	members := append(c.HTTPMembers(), client.Member{PeerURLs: []string{peerURL}, ClientURLs: []string{}})
	c.waitMembersMatch(t, members)

	m.InitialPeerURLsMap = types.URLsMap{}
	for _, mm := range c.Members {
		m.InitialPeerURLsMap[mm.Name] = mm.PeerURLs
	}
	m.InitialPeerURLsMap[m.Name] = m.PeerURLs
	m.NewCluster = false
	if err := m.Launch(); err != nil {
		t.Fatal(err)
	}
	c.Members = append(c.Members, m)
	// wait cluster to be stable to receive future client requests
	c.waitMembersMatch(t, c.HTTPMembers())
}
Example #4
0
func (c *cluster) waitMembersMatch(t *testing.T, membs []client.Member) {
	for _, u := range c.URLs() {
		cc := mustNewHTTPClient(t, []string{u})
		ma := client.NewMembersAPI(cc)
		for {
			ctx, cancel := context.WithTimeout(context.Background(), requestTimeout)
			ms, err := ma.List(ctx)
			cancel()
			if err == nil && isMembersEqual(ms, membs) {
				break
			}
			time.Sleep(tickDuration)
		}
	}
	return
}
Example #5
0
File: util.go Project: algoadv/etcd
func mustNewMembersAPI(c *cli.Context) client.MembersAPI {
	return client.NewMembersAPI(mustNewClient(c))
}