736 lines
18 KiB
Go
736 lines
18 KiB
Go
// Copyright 2016 CoreOS, Inc.
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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.package recipe
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package integration
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import (
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"fmt"
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"io/ioutil"
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"math/rand"
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"net"
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"net/http"
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"net/http/httptest"
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"os"
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"reflect"
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"sort"
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"strconv"
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"strings"
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"sync/atomic"
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"testing"
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"time"
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"github.com/coreos/etcd/Godeps/_workspace/src/golang.org/x/net/context"
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"github.com/coreos/etcd/Godeps/_workspace/src/google.golang.org/grpc"
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"github.com/coreos/etcd/client"
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"github.com/coreos/etcd/clientv3"
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"github.com/coreos/etcd/etcdserver"
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"github.com/coreos/etcd/etcdserver/api/v3rpc"
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"github.com/coreos/etcd/etcdserver/etcdhttp"
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"github.com/coreos/etcd/pkg/testutil"
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"github.com/coreos/etcd/pkg/transport"
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"github.com/coreos/etcd/pkg/types"
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"github.com/coreos/etcd/rafthttp"
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)
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const (
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tickDuration = 10 * time.Millisecond
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clusterName = "etcd"
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requestTimeout = 20 * time.Second
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)
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var (
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electionTicks = 10
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// integration test uses well-known ports to listen for each running member,
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// which ensures restarted member could listen on specific port again.
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nextListenPort int64 = 20000
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testTLSInfo = transport.TLSInfo{
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KeyFile: "./fixtures/server.key.insecure",
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CertFile: "./fixtures/server.crt",
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TrustedCAFile: "./fixtures/ca.crt",
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ClientCertAuth: true,
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}
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)
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type ClusterConfig struct {
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Size int
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PeerTLS *transport.TLSInfo
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ClientTLS *transport.TLSInfo
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DiscoveryURL string
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UseV3 bool
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UseGRPC bool
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}
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type cluster struct {
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cfg *ClusterConfig
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Members []*member
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}
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func (c *cluster) fillClusterForMembers() error {
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if c.cfg.DiscoveryURL != "" {
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// cluster will be discovered
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return nil
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}
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addrs := make([]string, 0)
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for _, m := range c.Members {
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scheme := "http"
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if m.PeerTLSInfo != nil {
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scheme = "https"
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}
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for _, l := range m.PeerListeners {
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addrs = append(addrs, fmt.Sprintf("%s=%s://%s", m.Name, scheme, l.Addr().String()))
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}
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}
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clusterStr := strings.Join(addrs, ",")
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var err error
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for _, m := range c.Members {
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m.InitialPeerURLsMap, err = types.NewURLsMap(clusterStr)
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if err != nil {
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return err
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}
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}
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return nil
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}
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func newCluster(t *testing.T, cfg *ClusterConfig) *cluster {
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c := &cluster{cfg: cfg}
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ms := make([]*member, cfg.Size)
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for i := 0; i < cfg.Size; i++ {
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ms[i] = c.mustNewMember(t)
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}
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c.Members = ms
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if err := c.fillClusterForMembers(); err != nil {
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t.Fatal(err)
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}
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return c
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}
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// NewCluster returns an unlaunched cluster of the given size which has been
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// set to use static bootstrap.
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func NewCluster(t *testing.T, size int) *cluster {
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return newCluster(t, &ClusterConfig{Size: size})
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}
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// NewClusterByConfig returns an unlaunched cluster defined by a cluster configuration
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func NewClusterByConfig(t *testing.T, cfg *ClusterConfig) *cluster {
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return newCluster(t, cfg)
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}
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func (c *cluster) Launch(t *testing.T) {
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errc := make(chan error)
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for _, m := range c.Members {
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// Members are launched in separate goroutines because if they boot
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// using discovery url, they have to wait for others to register to continue.
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go func(m *member) {
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errc <- m.Launch()
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}(m)
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}
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for range c.Members {
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if err := <-errc; err != nil {
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t.Fatalf("error setting up member: %v", err)
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}
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}
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// wait cluster to be stable to receive future client requests
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c.waitMembersMatch(t, c.HTTPMembers())
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c.waitVersion()
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}
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func (c *cluster) URL(i int) string {
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return c.Members[i].ClientURLs[0].String()
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}
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// URLs returns a list of all active client URLs in the cluster
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func (c *cluster) URLs() []string {
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urls := make([]string, 0)
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for _, m := range c.Members {
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select {
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case <-m.s.StopNotify():
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continue
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default:
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}
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for _, u := range m.ClientURLs {
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urls = append(urls, u.String())
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}
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}
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return urls
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}
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// HTTPMembers returns a list of all active members as client.Members
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func (c *cluster) HTTPMembers() []client.Member {
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ms := []client.Member{}
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for _, m := range c.Members {
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pScheme, cScheme := "http", "http"
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if m.PeerTLSInfo != nil {
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pScheme = "https"
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}
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if m.ClientTLSInfo != nil {
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cScheme = "https"
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}
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cm := client.Member{Name: m.Name}
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for _, ln := range m.PeerListeners {
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cm.PeerURLs = append(cm.PeerURLs, pScheme+"://"+ln.Addr().String())
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}
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for _, ln := range m.ClientListeners {
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cm.ClientURLs = append(cm.ClientURLs, cScheme+"://"+ln.Addr().String())
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}
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ms = append(ms, cm)
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}
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return ms
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}
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func (c *cluster) mustNewMember(t *testing.T) *member {
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name := c.name(rand.Int())
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m := mustNewMember(t, name, c.cfg.PeerTLS, c.cfg.ClientTLS)
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m.DiscoveryURL = c.cfg.DiscoveryURL
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m.V3demo = c.cfg.UseV3
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if c.cfg.UseGRPC {
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if err := m.listenGRPC(); err != nil {
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t.Fatal(err)
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}
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}
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return m
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}
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func (c *cluster) addMember(t *testing.T) {
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m := c.mustNewMember(t)
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scheme := "http"
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if c.cfg.PeerTLS != nil {
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scheme = "https"
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}
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// send add request to the cluster
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var err error
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for i := 0; i < len(c.Members); i++ {
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clientURL := c.URL(i)
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peerURL := scheme + "://" + m.PeerListeners[0].Addr().String()
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if err = c.addMemberByURL(t, clientURL, peerURL); err == nil {
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break
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}
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}
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if err != nil {
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t.Fatalf("add member failed on all members error: %v", err)
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}
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m.InitialPeerURLsMap = types.URLsMap{}
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for _, mm := range c.Members {
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m.InitialPeerURLsMap[mm.Name] = mm.PeerURLs
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}
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m.InitialPeerURLsMap[m.Name] = m.PeerURLs
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m.NewCluster = false
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if err := m.Launch(); err != nil {
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t.Fatal(err)
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}
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c.Members = append(c.Members, m)
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// wait cluster to be stable to receive future client requests
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c.waitMembersMatch(t, c.HTTPMembers())
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}
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func (c *cluster) addMemberByURL(t *testing.T, clientURL, peerURL string) error {
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cc := mustNewHTTPClient(t, []string{clientURL}, c.cfg.ClientTLS)
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ma := client.NewMembersAPI(cc)
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ctx, cancel := context.WithTimeout(context.Background(), requestTimeout)
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if _, err := ma.Add(ctx, peerURL); err != nil {
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return err
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}
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cancel()
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// wait for the add node entry applied in the cluster
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members := append(c.HTTPMembers(), client.Member{PeerURLs: []string{peerURL}, ClientURLs: []string{}})
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c.waitMembersMatch(t, members)
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return nil
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}
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func (c *cluster) AddMember(t *testing.T) {
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c.addMember(t)
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}
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func (c *cluster) RemoveMember(t *testing.T, id uint64) {
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// send remove request to the cluster
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cc := mustNewHTTPClient(t, c.URLs(), c.cfg.ClientTLS)
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ma := client.NewMembersAPI(cc)
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ctx, cancel := context.WithTimeout(context.Background(), requestTimeout)
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if err := ma.Remove(ctx, types.ID(id).String()); err != nil {
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t.Fatalf("unexpected remove error %v", err)
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}
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cancel()
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newMembers := make([]*member, 0)
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for _, m := range c.Members {
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if uint64(m.s.ID()) != id {
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newMembers = append(newMembers, m)
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} else {
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select {
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case <-m.s.StopNotify():
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m.Terminate(t)
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// 1s stop delay + election timeout + 1s disk and network delay + connection write timeout
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// TODO: remove connection write timeout by selecting on http response closeNotifier
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// blocking on https://github.com/golang/go/issues/9524
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case <-time.After(time.Second + time.Duration(electionTicks)*tickDuration + time.Second + rafthttp.ConnWriteTimeout):
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t.Fatalf("failed to remove member %s in time", m.s.ID())
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}
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}
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}
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c.Members = newMembers
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c.waitMembersMatch(t, c.HTTPMembers())
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}
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func (c *cluster) Terminate(t *testing.T) {
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for _, m := range c.Members {
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m.Terminate(t)
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}
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}
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func (c *cluster) waitMembersMatch(t *testing.T, membs []client.Member) {
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for _, u := range c.URLs() {
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cc := mustNewHTTPClient(t, []string{u}, c.cfg.ClientTLS)
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ma := client.NewMembersAPI(cc)
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for {
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ctx, cancel := context.WithTimeout(context.Background(), requestTimeout)
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ms, err := ma.List(ctx)
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cancel()
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if err == nil && isMembersEqual(ms, membs) {
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break
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}
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time.Sleep(tickDuration)
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}
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}
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return
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}
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func (c *cluster) waitLeader(t *testing.T, membs []*member) int {
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possibleLead := make(map[uint64]bool)
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var lead uint64
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for _, m := range membs {
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possibleLead[uint64(m.s.ID())] = true
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}
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for lead == 0 || !possibleLead[lead] {
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lead = 0
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for _, m := range membs {
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select {
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case <-m.s.StopNotify():
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continue
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default:
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}
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if lead != 0 && lead != m.s.Lead() {
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lead = 0
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break
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}
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lead = m.s.Lead()
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}
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time.Sleep(10 * tickDuration)
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}
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for i, m := range membs {
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if uint64(m.s.ID()) == lead {
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return i
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}
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}
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return -1
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}
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func (c *cluster) waitVersion() {
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for _, m := range c.Members {
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for {
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if m.s.ClusterVersion() != nil {
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break
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}
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time.Sleep(tickDuration)
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}
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}
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}
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func (c *cluster) name(i int) string {
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return fmt.Sprint("node", i)
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}
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// isMembersEqual checks whether two members equal except ID field.
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// The given wmembs should always set ID field to empty string.
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func isMembersEqual(membs []client.Member, wmembs []client.Member) bool {
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sort.Sort(SortableMemberSliceByPeerURLs(membs))
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sort.Sort(SortableMemberSliceByPeerURLs(wmembs))
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for i := range membs {
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membs[i].ID = ""
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}
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return reflect.DeepEqual(membs, wmembs)
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}
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func newLocalListener(t *testing.T) net.Listener {
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port := atomic.AddInt64(&nextListenPort, 1)
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l, err := net.Listen("tcp", "127.0.0.1:"+strconv.FormatInt(port, 10))
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if err != nil {
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t.Fatal(err)
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}
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return l
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}
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func newListenerWithAddr(t *testing.T, addr string) net.Listener {
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var err error
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var l net.Listener
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// TODO: we want to reuse a previous closed port immediately.
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// a better way is to set SO_REUSExx instead of doing retry.
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for i := 0; i < 5; i++ {
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l, err = net.Listen("tcp", addr)
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if err == nil {
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break
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}
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time.Sleep(500 * time.Millisecond)
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}
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if err != nil {
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t.Fatal(err)
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}
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return l
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}
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type member struct {
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etcdserver.ServerConfig
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PeerListeners, ClientListeners []net.Listener
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grpcListener net.Listener
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// PeerTLSInfo enables peer TLS when set
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PeerTLSInfo *transport.TLSInfo
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// ClientTLSInfo enables client TLS when set
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ClientTLSInfo *transport.TLSInfo
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raftHandler *testutil.PauseableHandler
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s *etcdserver.EtcdServer
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hss []*httptest.Server
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grpcServer *grpc.Server
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grpcAddr string
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}
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// mustNewMember return an inited member with the given name. If peerTLS is
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// set, it will use https scheme to communicate between peers.
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func mustNewMember(t *testing.T, name string, peerTLS *transport.TLSInfo, clientTLS *transport.TLSInfo) *member {
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var err error
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m := &member{}
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peerScheme, clientScheme := "http", "http"
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if peerTLS != nil {
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peerScheme = "https"
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}
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if clientTLS != nil {
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clientScheme = "https"
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}
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pln := newLocalListener(t)
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m.PeerListeners = []net.Listener{pln}
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m.PeerURLs, err = types.NewURLs([]string{peerScheme + "://" + pln.Addr().String()})
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if err != nil {
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t.Fatal(err)
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}
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m.PeerTLSInfo = peerTLS
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cln := newLocalListener(t)
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m.ClientListeners = []net.Listener{cln}
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m.ClientURLs, err = types.NewURLs([]string{clientScheme + "://" + cln.Addr().String()})
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if err != nil {
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t.Fatal(err)
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}
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m.ClientTLSInfo = clientTLS
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m.Name = name
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m.DataDir, err = ioutil.TempDir(os.TempDir(), "etcd")
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if err != nil {
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t.Fatal(err)
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}
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clusterStr := fmt.Sprintf("%s=%s://%s", name, peerScheme, pln.Addr().String())
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m.InitialPeerURLsMap, err = types.NewURLsMap(clusterStr)
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if err != nil {
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t.Fatal(err)
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}
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m.InitialClusterToken = clusterName
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m.NewCluster = true
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m.BootstrapTimeout = 10 * time.Millisecond
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if m.PeerTLSInfo != nil {
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m.ServerConfig.PeerTLSInfo = *m.PeerTLSInfo
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}
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m.ElectionTicks = electionTicks
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m.TickMs = uint(tickDuration / time.Millisecond)
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return m
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}
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|
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// listenGRPC starts a grpc server over a unix domain socket on the member
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func (m *member) listenGRPC() error {
|
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if m.V3demo == false {
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return fmt.Errorf("starting grpc server without v3 configured")
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}
|
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// prefix with localhost so cert has right domain
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m.grpcAddr = "localhost:" + m.Name + ".sock"
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if err := os.RemoveAll(m.grpcAddr); err != nil {
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return err
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}
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l, err := net.Listen("unix", m.grpcAddr)
|
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if err != nil {
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return fmt.Errorf("listen failed on grpc socket %s (%v)", m.grpcAddr, err)
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}
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m.grpcAddr = "unix://" + m.grpcAddr
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m.grpcListener = l
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return nil
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}
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|
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// NewClientV3 creates a new grpc client connection to the member
|
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func NewClientV3(m *member) (*clientv3.Client, error) {
|
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if m.grpcAddr == "" {
|
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return nil, fmt.Errorf("member not configured for grpc")
|
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}
|
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cfg := clientv3.Config{
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Endpoints: []string{m.grpcAddr},
|
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DialTimeout: 5 * time.Second,
|
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TLS: m.ClientTLSInfo,
|
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}
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return clientv3.New(cfg)
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}
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|
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// Clone returns a member with the same server configuration. The returned
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// member will not set PeerListeners and ClientListeners.
|
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func (m *member) Clone(t *testing.T) *member {
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mm := &member{}
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mm.ServerConfig = m.ServerConfig
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|
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var err error
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clientURLStrs := m.ClientURLs.StringSlice()
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mm.ClientURLs, err = types.NewURLs(clientURLStrs)
|
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if err != nil {
|
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// this should never fail
|
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panic(err)
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}
|
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peerURLStrs := m.PeerURLs.StringSlice()
|
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mm.PeerURLs, err = types.NewURLs(peerURLStrs)
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if err != nil {
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// this should never fail
|
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panic(err)
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}
|
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clusterStr := m.InitialPeerURLsMap.String()
|
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mm.InitialPeerURLsMap, err = types.NewURLsMap(clusterStr)
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if err != nil {
|
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// this should never fail
|
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panic(err)
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}
|
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mm.InitialClusterToken = m.InitialClusterToken
|
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mm.ElectionTicks = m.ElectionTicks
|
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mm.PeerTLSInfo = m.PeerTLSInfo
|
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mm.ClientTLSInfo = m.ClientTLSInfo
|
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return mm
|
|
}
|
|
|
|
// Launch starts a member based on ServerConfig, PeerListeners
|
|
// and ClientListeners.
|
|
func (m *member) Launch() error {
|
|
var err error
|
|
if m.s, err = etcdserver.NewServer(&m.ServerConfig); err != nil {
|
|
return fmt.Errorf("failed to initialize the etcd server: %v", err)
|
|
}
|
|
m.s.SyncTicker = time.Tick(500 * time.Millisecond)
|
|
m.s.Start()
|
|
|
|
m.raftHandler = &testutil.PauseableHandler{Next: etcdhttp.NewPeerHandler(m.s)}
|
|
|
|
for _, ln := range m.PeerListeners {
|
|
hs := &httptest.Server{
|
|
Listener: ln,
|
|
Config: &http.Server{Handler: m.raftHandler},
|
|
}
|
|
if m.PeerTLSInfo == nil {
|
|
hs.Start()
|
|
} else {
|
|
hs.TLS, err = m.PeerTLSInfo.ServerConfig()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
hs.StartTLS()
|
|
}
|
|
m.hss = append(m.hss, hs)
|
|
}
|
|
for _, ln := range m.ClientListeners {
|
|
hs := &httptest.Server{
|
|
Listener: ln,
|
|
Config: &http.Server{Handler: etcdhttp.NewClientHandler(m.s, m.ServerConfig.ReqTimeout())},
|
|
}
|
|
if m.ClientTLSInfo == nil {
|
|
hs.Start()
|
|
} else {
|
|
hs.TLS, err = m.ClientTLSInfo.ServerConfig()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
hs.StartTLS()
|
|
}
|
|
m.hss = append(m.hss, hs)
|
|
}
|
|
if m.grpcListener != nil {
|
|
m.grpcServer, err = v3rpc.Server(m.s, m.ClientTLSInfo)
|
|
go m.grpcServer.Serve(m.grpcListener)
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (m *member) WaitOK(t *testing.T) {
|
|
cc := mustNewHTTPClient(t, []string{m.URL()}, m.ClientTLSInfo)
|
|
kapi := client.NewKeysAPI(cc)
|
|
for {
|
|
ctx, cancel := context.WithTimeout(context.Background(), requestTimeout)
|
|
_, err := kapi.Get(ctx, "/", nil)
|
|
if err != nil {
|
|
time.Sleep(tickDuration)
|
|
continue
|
|
}
|
|
cancel()
|
|
break
|
|
}
|
|
for m.s.Leader() == 0 {
|
|
time.Sleep(tickDuration)
|
|
}
|
|
}
|
|
|
|
func (m *member) URL() string { return m.ClientURLs[0].String() }
|
|
|
|
func (m *member) Pause() {
|
|
m.raftHandler.Pause()
|
|
m.s.PauseSending()
|
|
}
|
|
|
|
func (m *member) Resume() {
|
|
m.raftHandler.Resume()
|
|
m.s.ResumeSending()
|
|
}
|
|
|
|
// Close stops the member's etcdserver and closes its connections
|
|
func (m *member) Close() {
|
|
if m.grpcServer != nil {
|
|
m.grpcServer.Stop()
|
|
m.grpcServer = nil
|
|
}
|
|
m.s.Stop()
|
|
for _, hs := range m.hss {
|
|
hs.CloseClientConnections()
|
|
hs.Close()
|
|
}
|
|
}
|
|
|
|
// Stop stops the member, but the data dir of the member is preserved.
|
|
func (m *member) Stop(t *testing.T) {
|
|
m.Close()
|
|
m.hss = nil
|
|
}
|
|
|
|
// StopNotify unblocks when a member stop completes
|
|
func (m *member) StopNotify() <-chan struct{} {
|
|
return m.s.StopNotify()
|
|
}
|
|
|
|
// Restart starts the member using the preserved data dir.
|
|
func (m *member) Restart(t *testing.T) error {
|
|
newPeerListeners := make([]net.Listener, 0)
|
|
for _, ln := range m.PeerListeners {
|
|
newPeerListeners = append(newPeerListeners, newListenerWithAddr(t, ln.Addr().String()))
|
|
}
|
|
m.PeerListeners = newPeerListeners
|
|
newClientListeners := make([]net.Listener, 0)
|
|
for _, ln := range m.ClientListeners {
|
|
newClientListeners = append(newClientListeners, newListenerWithAddr(t, ln.Addr().String()))
|
|
}
|
|
m.ClientListeners = newClientListeners
|
|
|
|
if m.grpcListener != nil {
|
|
if err := m.listenGRPC(); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
}
|
|
|
|
return m.Launch()
|
|
}
|
|
|
|
// Terminate stops the member and removes the data dir.
|
|
func (m *member) Terminate(t *testing.T) {
|
|
m.Close()
|
|
if err := os.RemoveAll(m.ServerConfig.DataDir); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
}
|
|
|
|
func mustNewHTTPClient(t *testing.T, eps []string, tls *transport.TLSInfo) client.Client {
|
|
cfgtls := transport.TLSInfo{}
|
|
if tls != nil {
|
|
cfgtls = *tls
|
|
}
|
|
cfg := client.Config{Transport: mustNewTransport(t, cfgtls), Endpoints: eps}
|
|
c, err := client.New(cfg)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
return c
|
|
}
|
|
|
|
func mustNewTransport(t *testing.T, tlsInfo transport.TLSInfo) *http.Transport {
|
|
// tick in integration test is short, so 1s dial timeout could play well.
|
|
tr, err := transport.NewTimeoutTransport(tlsInfo, time.Second, rafthttp.ConnReadTimeout, rafthttp.ConnWriteTimeout)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
return tr
|
|
}
|
|
|
|
type SortableMemberSliceByPeerURLs []client.Member
|
|
|
|
func (p SortableMemberSliceByPeerURLs) Len() int { return len(p) }
|
|
func (p SortableMemberSliceByPeerURLs) Less(i, j int) bool {
|
|
return p[i].PeerURLs[0] < p[j].PeerURLs[0]
|
|
}
|
|
func (p SortableMemberSliceByPeerURLs) Swap(i, j int) { p[i], p[j] = p[j], p[i] }
|
|
|
|
type ClusterV3 struct {
|
|
*cluster
|
|
clients []*clientv3.Client
|
|
}
|
|
|
|
// NewClusterV3 returns a launched cluster with a grpc client connection
|
|
// for each cluster member.
|
|
func NewClusterV3(t *testing.T, cfg *ClusterConfig) *ClusterV3 {
|
|
cfg.UseV3 = true
|
|
cfg.UseGRPC = true
|
|
clus := &ClusterV3{cluster: NewClusterByConfig(t, cfg)}
|
|
for _, m := range clus.Members {
|
|
client, err := NewClientV3(m)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
clus.clients = append(clus.clients, client)
|
|
}
|
|
clus.Launch(t)
|
|
return clus
|
|
}
|
|
|
|
func (c *ClusterV3) Terminate(t *testing.T) {
|
|
for _, client := range c.clients {
|
|
if err := client.Close(); err != nil {
|
|
t.Error(err)
|
|
}
|
|
}
|
|
c.cluster.Terminate(t)
|
|
}
|
|
|
|
func (c *ClusterV3) RandClient() *clientv3.Client {
|
|
return c.clients[rand.Intn(len(c.clients))]
|
|
}
|
|
|
|
func (c *ClusterV3) Client(i int) *clientv3.Client {
|
|
return c.clients[i]
|
|
}
|