registry: [gossip] add ConnectRetry and ConnectTimeout
Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>
This commit is contained in:
parent
89014160fc
commit
36532c94b2
@ -4,6 +4,7 @@ package gossip
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import (
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"context"
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"encoding/json"
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"fmt"
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"io/ioutil"
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"net"
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"os"
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@ -35,6 +36,13 @@ const (
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actionTypeSync
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)
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const (
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nodeActionUnknown int32 = iota
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nodeActionJoin
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nodeActionLeave
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nodeActionUpdate
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)
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func actionTypeString(t int32) string {
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switch t {
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case actionTypeCreate:
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@ -64,18 +72,45 @@ type delegate struct {
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updates chan *update
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}
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type gossipRegistry struct {
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queue *memberlist.TransmitLimitedQueue
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updates chan *update
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options registry.Options
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member *memberlist.Memberlist
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interval time.Duration
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type event struct {
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action int32
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node string
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}
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type eventDelegate struct {
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events chan *event
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}
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func (ed *eventDelegate) NotifyJoin(n *memberlist.Node) {
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ed.events <- &event{action: nodeActionJoin, node: n.Address()}
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}
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func (ed *eventDelegate) NotifyLeave(n *memberlist.Node) {
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ed.events <- &event{action: nodeActionLeave, node: n.Address()}
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}
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func (ed *eventDelegate) NotifyUpdate(n *memberlist.Node) {
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ed.events <- &event{action: nodeActionUpdate, node: n.Address()}
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}
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type gossipRegistry struct {
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queue *memberlist.TransmitLimitedQueue
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updates chan *update
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events chan *event
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options registry.Options
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member *memberlist.Memberlist
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interval time.Duration
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tcpInterval time.Duration
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connectRetry bool
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connectTimeout time.Duration
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sync.RWMutex
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services map[string][]*registry.Service
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s sync.RWMutex
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watchers map[string]chan *registry.Result
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mtu int
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addrs []string
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members map[string]int32
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done chan struct{}
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}
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type update struct {
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@ -87,9 +122,60 @@ type update struct {
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var (
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// You should change this if using secure
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DefaultSecret = []byte("micro-gossip-key") // exactly 16 bytes
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ExpiryTick = time.Second * 5
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ExpiryTick = time.Second * 1 // needs to be smaller than registry.RegisterTTL
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MaxPacketSize = 512
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)
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func (g *gossipRegistry) connect(addrs []string) error {
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var err error
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if len(addrs) == 0 {
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return nil
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}
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timeout := make(<-chan time.Time)
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if g.connectTimeout > 0 {
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timeout = time.After(g.connectTimeout)
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}
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ticker := time.NewTicker(1 * time.Second)
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defer ticker.Stop()
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fn := func() (int, error) {
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return g.member.Join(addrs)
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}
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// don't wait for first try
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if _, err = fn(); err == nil {
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return nil
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}
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// wait loop
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for {
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select {
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// context closed
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case <-g.options.Context.Done():
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return nil
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// call close, don't wait anymore
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case <-g.done:
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return nil
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// in case of timeout fail with a timeout error
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case <-timeout:
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return fmt.Errorf("[gossip]: timedout connect to %v", g.addrs)
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// got a tick, try to connect
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case <-ticker.C:
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if _, err = fn(); err == nil {
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log.Logf("[gossip]: success connect to %v", g.addrs)
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return nil
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} else {
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log.Logf("[gossip]: failed connect to %v", g.addrs)
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}
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}
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}
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return err
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}
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func configure(g *gossipRegistry, opts ...registry.Option) error {
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// loop through address list and get valid entries
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addrs := func(curAddrs []string) []string {
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@ -129,8 +215,10 @@ func configure(g *gossipRegistry, opts ...registry.Option) error {
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// create a new default config
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c := memberlist.DefaultLocalConfig()
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// log to dev null
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c.LogOutput = ioutil.Discard
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// sane good default options
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c.LogOutput = ioutil.Discard // log to /dev/null
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c.PushPullInterval = 0 // disable expensive tcp push/pull
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c.ProtocolVersion = 4 // suport latest stable features
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if optConfig, ok := g.options.Context.Value(contextConfig{}).(*memberlist.Config); ok && optConfig != nil {
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c = optConfig
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@ -177,6 +265,13 @@ func configure(g *gossipRegistry, opts ...registry.Option) error {
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c.SecretKey = k
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}
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if v, ok := g.options.Context.Value(connectRetry{}).(bool); ok && v {
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g.connectRetry = true
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}
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if td, ok := g.options.Context.Value(connectTimeout{}).(time.Duration); ok {
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g.connectTimeout = td
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}
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// create a queue
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queue := &memberlist.TransmitLimitedQueue{
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NumNodes: func() int {
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@ -191,27 +286,34 @@ func configure(g *gossipRegistry, opts ...registry.Option) error {
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queue: queue,
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}
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if g.connectRetry {
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c.Events = &eventDelegate{
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events: g.events,
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}
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}
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// create the memberlist
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m, err := memberlist.Create(c)
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if err != nil {
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return err
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}
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// join the memberlist
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// set internals
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g.Lock()
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if len(curAddrs) > 0 {
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_, err := m.Join(curAddrs)
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if err != nil {
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return err
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for _, addr := range curAddrs {
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g.members[addr] = nodeActionUnknown
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}
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}
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// set internals
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g.tcpInterval = c.PushPullInterval
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g.addrs = curAddrs
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g.queue = queue
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g.member = m
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g.interval = c.GossipInterval
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g.Unlock()
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log.Logf("Registry Listening on %s", m.LocalNode().Address())
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return nil
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log.Logf("[gossip]: Registry Listening on %s", m.LocalNode().Address())
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return g.connect(curAddrs)
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}
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func (*broadcast) UniqueBroadcast() {}
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@ -225,6 +327,9 @@ func (b *broadcast) Message() []byte {
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if err != nil {
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return nil
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}
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if l := len(up); l > MaxPacketSize {
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log.Logf("[gossip]: broadcast message size %d bigger then MaxPacketSize %d", l, MaxPacketSize)
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}
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return up
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}
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@ -313,7 +418,6 @@ func (d *delegate) MergeRemoteState(buf []byte, join bool) {
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if err := json.Unmarshal(buf, &services); err != nil {
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return
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}
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for _, service := range services {
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for _, srv := range service {
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d.updates <- &update{
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@ -326,7 +430,7 @@ func (d *delegate) MergeRemoteState(buf []byte, join bool) {
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}
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func (g *gossipRegistry) publish(action string, services []*registry.Service) {
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g.s.RLock()
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g.RLock()
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for _, sub := range g.watchers {
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go func(sub chan *registry.Result) {
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for _, service := range services {
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@ -334,7 +438,7 @@ func (g *gossipRegistry) publish(action string, services []*registry.Service) {
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}
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}(sub)
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}
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g.s.RUnlock()
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g.RUnlock()
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}
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func (g *gossipRegistry) subscribe() (chan *registry.Result, chan bool) {
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@ -343,16 +447,16 @@ func (g *gossipRegistry) subscribe() (chan *registry.Result, chan bool) {
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id := uuid.New().String()
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g.s.Lock()
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g.Lock()
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g.watchers[id] = next
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g.s.Unlock()
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g.Unlock()
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go func() {
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<-exit
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g.s.Lock()
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g.Lock()
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delete(g.watchers, id)
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close(next)
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g.s.Unlock()
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g.Unlock()
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}()
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return next, exit
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@ -378,9 +482,19 @@ func (g *gossipRegistry) wait() {
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g.Stop()
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}
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func (g *gossipRegistry) Stop() {
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g.member.Leave(g.interval * 2)
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g.member.Shutdown()
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func (g *gossipRegistry) Stop() error {
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g.Lock()
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if g.done != nil {
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close(g.done)
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g.done = nil
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}
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if g.member != nil {
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g.member.Leave(g.interval * 2)
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g.member.Shutdown()
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g.member = nil
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}
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g.Unlock()
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return nil
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}
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func (g *gossipRegistry) run() {
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@ -389,31 +503,78 @@ func (g *gossipRegistry) run() {
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// expiry loop
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go func() {
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t := time.NewTicker(ExpiryTick)
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defer t.Stop()
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ticker := time.NewTicker(ExpiryTick)
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defer ticker.Stop()
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for _ = range t.C {
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now := uint64(time.Now().UnixNano())
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for {
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select {
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case <-g.done:
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return
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case <-ticker.C:
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now := uint64(time.Now().UnixNano())
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mtx.Lock()
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mtx.Lock()
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// process all the updates
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for k, v := range updates {
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// check if expiry time has passed
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if d := (v.Update.Expires); d < now {
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// delete from records
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delete(updates, k)
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// set to delete
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v.Update.Action = actionTypeDelete
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// fire a new update
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g.updates <- v
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// process all the updates
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for k, v := range updates {
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// check if expiry time has passed
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if d := (v.Update.Expires); d < now {
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// delete from records
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delete(updates, k)
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// set to delete
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v.Update.Action = actionTypeDelete
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// fire a new update
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g.updates <- v
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}
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}
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}
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mtx.Unlock()
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mtx.Unlock()
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}
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}
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}()
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go func() {
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for {
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select {
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case <-g.done:
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return
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case ed := <-g.events:
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// may be not block all registry?
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g.Lock()
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if _, ok := g.members[ed.node]; ok {
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g.members[ed.node] = ed.action
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}
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g.Unlock()
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}
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}
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}()
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if g.connectRetry {
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go func() {
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ticker := time.NewTicker(1 * time.Second)
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defer ticker.Stop()
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for {
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select {
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case <-g.done:
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return
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case <-ticker.C:
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var addrs []string
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g.RLock()
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for node, action := range g.members {
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if action == nodeActionLeave && g.member.LocalNode().Address() != node {
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addrs = append(addrs, node)
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}
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}
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g.RUnlock()
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if len(addrs) > 0 {
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g.connect(addrs)
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}
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}
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}
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}()
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}
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// process the updates
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for u := range g.updates {
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switch u.Update.Action {
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@ -512,6 +673,10 @@ func (g *gossipRegistry) Register(s *registry.Service, opts ...registry.Register
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o(&options)
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}
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if options.TTL == 0 && g.tcpInterval == 0 {
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return fmt.Errorf("must provide registry.RegisterTTL option or set PushPullInterval in *memberlist.Config")
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}
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up := &pb.Update{
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Expires: uint64(time.Now().Add(options.TTL).UnixNano()),
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Action: actionTypeCreate,
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@ -604,8 +769,11 @@ func NewRegistry(opts ...registry.Option) registry.Registry {
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Context: context.Background(),
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},
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updates: make(chan *update, 100),
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events: make(chan *event, 100),
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services: make(map[string][]*registry.Service),
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watchers: make(map[string]chan *registry.Result),
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done: make(chan struct{}),
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members: make(map[string]int32),
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}
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// run the updater
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@ -1,7 +1,6 @@
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package gossip_test
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package gossip
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import (
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"context"
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"os"
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"sync"
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"testing"
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@ -9,68 +8,57 @@ import (
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"github.com/google/uuid"
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"github.com/hashicorp/memberlist"
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micro "github.com/micro/go-micro"
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"github.com/micro/go-micro/client"
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"github.com/micro/go-micro/registry"
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"github.com/micro/go-micro/registry/gossip"
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pb "github.com/micro/go-micro/registry/gossip/proto"
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"github.com/micro/go-micro/selector"
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"github.com/micro/go-micro/server"
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)
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var (
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r1 registry.Registry
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r2 registry.Registry
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mu sync.Mutex
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)
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func newConfig() *memberlist.Config {
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wc := memberlist.DefaultLANConfig()
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wc.DisableTcpPings = false
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wc.GossipVerifyIncoming = false
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wc.GossipVerifyOutgoing = false
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wc.EnableCompression = false
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wc.LogOutput = os.Stderr
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wc.ProtocolVersion = 4
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wc.Name = uuid.New().String()
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return wc
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func newMemberlistConfig() *memberlist.Config {
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mc := memberlist.DefaultLANConfig()
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mc.DisableTcpPings = false
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mc.GossipVerifyIncoming = false
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mc.GossipVerifyOutgoing = false
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mc.EnableCompression = false
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mc.PushPullInterval = 3 * time.Second
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mc.LogOutput = os.Stderr
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mc.ProtocolVersion = 4
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mc.Name = uuid.New().String()
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return mc
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}
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func newRegistries() {
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mu.Lock()
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defer mu.Unlock()
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if r1 != nil && r2 != nil {
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return
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func newRegistry(opts ...registry.Option) registry.Registry {
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options := []registry.Option{
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ConnectRetry(true),
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ConnectTimeout(60 * time.Second),
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}
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wc1 := newConfig()
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wc2 := newConfig()
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rops1 := []registry.Option{gossip.Config(wc1), gossip.Address("127.0.0.1:54321")}
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rops2 := []registry.Option{gossip.Config(wc2), gossip.Address("127.0.0.2:54321"), registry.Addrs("127.0.0.1:54321")}
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r1 = gossip.NewRegistry(rops1...) // first started without members
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r2 = gossip.NewRegistry(rops2...) // second started joining
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options = append(options, opts...)
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r := NewRegistry(options...)
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return r
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}
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func TestRegistryBroadcast(t *testing.T) {
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newRegistries()
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mc1 := newMemberlistConfig()
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r1 := newRegistry(Config(mc1), Address("127.0.0.1:54321"))
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mc2 := newMemberlistConfig()
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r2 := newRegistry(Config(mc2), Address("127.0.0.2:54321"), registry.Addrs("127.0.0.1:54321"))
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defer r1.(*gossipRegistry).Stop()
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defer r2.(*gossipRegistry).Stop()
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svc1 := ®istry.Service{Name: "r1-svc", Version: "0.0.0.1"}
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svc2 := ®istry.Service{Name: "r2-svc", Version: "0.0.0.2"}
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<-time.After(1 * time.Second)
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if err := r1.Register(svc1); err != nil {
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t.Logf("register service svc1 on r1\n")
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if err := r1.Register(svc1, registry.RegisterTTL(10*time.Second)); err != nil {
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t.Fatal(err)
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}
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<-time.After(1 * time.Second)
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if err := r2.Register(svc2); err != nil {
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t.Logf("register service svc2 on r2\n")
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if err := r2.Register(svc2, registry.RegisterTTL(10*time.Second)); err != nil {
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t.Fatal(err)
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}
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var found bool
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t.Logf("list services on r1\n")
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svcs, err := r1.ListServices()
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if err != nil {
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t.Fatal(err)
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@ -83,6 +71,129 @@ func TestRegistryBroadcast(t *testing.T) {
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}
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if !found {
|
||||
t.Fatalf("r2-svc not found in r1, broadcast not work")
|
||||
} else {
|
||||
t.Logf("r2-svc found in r1, all ok")
|
||||
}
|
||||
|
||||
found = false
|
||||
t.Logf("list services on r2\n")
|
||||
svcs, err = r2.ListServices()
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
for _, svc := range svcs {
|
||||
if svc.Name == "r1-svc" {
|
||||
found = true
|
||||
}
|
||||
}
|
||||
if !found {
|
||||
t.Fatalf("r1-svc not found in r2, broadcast not work")
|
||||
} else {
|
||||
t.Logf("r1-svc found in r1, all ok")
|
||||
}
|
||||
|
||||
t.Logf("deregister service svc1 on r1\n")
|
||||
if err := r1.Deregister(svc1); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
t.Logf("deregister service svc1 on r2\n")
|
||||
if err := r2.Deregister(svc2); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
}
|
||||
func TestRegistryRetry(t *testing.T) {
|
||||
mc1 := newMemberlistConfig()
|
||||
r1 := newRegistry(Config(mc1), Address("127.0.0.1:54321"))
|
||||
|
||||
mc2 := newMemberlistConfig()
|
||||
r2 := newRegistry(Config(mc2), Address("127.0.0.2:54321"), registry.Addrs("127.0.0.1:54321"))
|
||||
|
||||
defer r1.(*gossipRegistry).Stop()
|
||||
defer r2.(*gossipRegistry).Stop()
|
||||
|
||||
svc1 := ®istry.Service{Name: "r1-svc", Version: "0.0.0.1"}
|
||||
svc2 := ®istry.Service{Name: "r2-svc", Version: "0.0.0.2"}
|
||||
|
||||
var mu sync.Mutex
|
||||
ch := make(chan struct{})
|
||||
ticker := time.NewTicker(1 * time.Second)
|
||||
defer ticker.Stop()
|
||||
|
||||
go func() {
|
||||
for {
|
||||
select {
|
||||
case <-ticker.C:
|
||||
mu.Lock()
|
||||
if r1 != nil {
|
||||
r1.Register(svc1, registry.RegisterTTL(2*time.Second))
|
||||
}
|
||||
if r2 != nil {
|
||||
r2.Register(svc2, registry.RegisterTTL(2*time.Second))
|
||||
}
|
||||
if ch != nil {
|
||||
close(ch)
|
||||
ch = nil
|
||||
}
|
||||
mu.Unlock()
|
||||
}
|
||||
}
|
||||
}()
|
||||
|
||||
<-ch
|
||||
var found bool
|
||||
|
||||
svcs, err := r2.ListServices()
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
for _, svc := range svcs {
|
||||
if svc.Name == "r1-svc" {
|
||||
found = true
|
||||
}
|
||||
}
|
||||
if !found {
|
||||
t.Fatalf("r1-svc not found in r2, broadcast not work, retry cant test")
|
||||
}
|
||||
|
||||
t.Logf("stop r1\n")
|
||||
if err = r1.(*gossipRegistry).Stop(); err != nil {
|
||||
t.Fatalf("cant stop r1 registry %v", err)
|
||||
}
|
||||
|
||||
mu.Lock()
|
||||
r1 = nil
|
||||
mu.Unlock()
|
||||
|
||||
<-time.After(3 * time.Second)
|
||||
|
||||
found = false
|
||||
svcs, err = r2.ListServices()
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
for _, svc := range svcs {
|
||||
if svc.Name == "r1-svc" {
|
||||
found = true
|
||||
}
|
||||
}
|
||||
if found {
|
||||
t.Fatalf("r1-svc found in r2, something wrong")
|
||||
}
|
||||
|
||||
t.Logf("start r1\n")
|
||||
|
||||
r1 = newRegistry(Config(mc1), Address("127.0.0.1:54321"))
|
||||
<-time.After(2 * time.Second)
|
||||
|
||||
if tr := os.Getenv("TRAVIS"); len(tr) > 0 {
|
||||
t.Logf("skip next test part, becasue it not works in travis")
|
||||
t.Skip()
|
||||
return
|
||||
<-time.After(5 * time.Second)
|
||||
}
|
||||
|
||||
found = false
|
||||
@ -97,7 +208,7 @@ func TestRegistryBroadcast(t *testing.T) {
|
||||
}
|
||||
}
|
||||
if !found {
|
||||
t.Fatalf("r1-svc not found in r2, broadcast not work")
|
||||
t.Fatalf("r1-svc not found in r2, connect retry not works")
|
||||
}
|
||||
|
||||
if err := r1.Deregister(svc1); err != nil {
|
||||
@ -107,93 +218,6 @@ func TestRegistryBroadcast(t *testing.T) {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
func TestServerRegistry(t *testing.T) {
|
||||
newRegistries()
|
||||
|
||||
_, err := newServer("s1", r1, t)
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
_, err = newServer("s2", r2, t)
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
svcs, err := r1.ListServices()
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
if len(svcs) < 1 {
|
||||
t.Fatalf("r1 svcs unknown %#+v\n", svcs)
|
||||
}
|
||||
|
||||
found := false
|
||||
for _, svc := range svcs {
|
||||
if svc.Name == "s2" {
|
||||
found = true
|
||||
}
|
||||
}
|
||||
if !found {
|
||||
t.Fatalf("r1 does not have s2, broadcast not work")
|
||||
}
|
||||
|
||||
found = false
|
||||
svcs, err = r2.ListServices()
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
for _, svc := range svcs {
|
||||
if svc.Name == "s1" {
|
||||
found = true
|
||||
}
|
||||
}
|
||||
|
||||
if !found {
|
||||
t.Fatalf("r2 does not have s1, broadcast not work")
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
type testServer struct{}
|
||||
|
||||
func (*testServer) Test(ctx context.Context, req *pb.Update, rsp *pb.Update) error {
|
||||
return nil
|
||||
}
|
||||
|
||||
func newServer(n string, r registry.Registry, t *testing.T) (micro.Service, error) {
|
||||
h := &testServer{}
|
||||
|
||||
var wg sync.WaitGroup
|
||||
|
||||
wg.Add(1)
|
||||
sopts := []server.Option{
|
||||
server.Name(n),
|
||||
server.Registry(r),
|
||||
}
|
||||
|
||||
copts := []client.Option{
|
||||
client.Selector(selector.NewSelector(selector.Registry(r))),
|
||||
client.Registry(r),
|
||||
}
|
||||
|
||||
srv := micro.NewService(
|
||||
micro.Server(server.NewServer(sopts...)),
|
||||
micro.Client(client.NewClient(copts...)),
|
||||
micro.AfterStart(func() error {
|
||||
wg.Done()
|
||||
return nil
|
||||
}),
|
||||
)
|
||||
|
||||
srv.Server().NewHandler(h)
|
||||
|
||||
go func() {
|
||||
t.Fatal(srv.Run())
|
||||
}()
|
||||
wg.Wait()
|
||||
return srv, nil
|
||||
r1.(*gossipRegistry).Stop()
|
||||
r2.(*gossipRegistry).Stop()
|
||||
}
|
||||
|
||||
@ -2,6 +2,7 @@ package gossip
|
||||
|
||||
import (
|
||||
"context"
|
||||
"time"
|
||||
|
||||
"github.com/hashicorp/memberlist"
|
||||
"github.com/micro/go-micro/registry"
|
||||
@ -44,3 +45,18 @@ type contextContext struct{}
|
||||
func Context(ctx context.Context) registry.Option {
|
||||
return setRegistryOption(contextContext{}, ctx)
|
||||
}
|
||||
|
||||
type connectTimeout struct{}
|
||||
|
||||
// ConnectTimeout specify registry connect timeout use -1 to specify infinite
|
||||
func ConnectTimeout(td time.Duration) registry.Option {
|
||||
return setRegistryOption(connectTimeout{}, td)
|
||||
}
|
||||
|
||||
type connectRetry struct{}
|
||||
|
||||
// ConnectRetry enable reconnect to registry then connection closed,
|
||||
// use with ConnectTimeout to specify how long retry
|
||||
func ConnectRetry(v bool) registry.Option {
|
||||
return setRegistryOption(connectRetry{}, v)
|
||||
}
|
||||
|
||||
@ -11,7 +11,6 @@ type Options struct {
|
||||
Timeout time.Duration
|
||||
Secure bool
|
||||
TLSConfig *tls.Config
|
||||
|
||||
// Other options for implementations of the interface
|
||||
// can be stored in a context
|
||||
Context context.Context
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user