rework gossip registry
This commit is contained in:
Asim Aslam
parent
c3722877c1
commit
7cb466359f
@ -1,4 +1,4 @@
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// Package Gossip provides a gossip registry based on hashicorp/memberlist
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// Package gossip provides a gossip registry based on hashicorp/memberlist
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package gossip
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import (
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@ -8,11 +8,9 @@ import (
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"io/ioutil"
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"net"
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"os"
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"os/signal"
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"strconv"
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"strings"
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"sync"
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"syscall"
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"time"
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"github.com/golang/protobuf/proto"
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@ -110,7 +108,7 @@ type gossipRegistry struct {
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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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done chan bool
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}
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type update struct {
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@ -119,6 +117,11 @@ type update struct {
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sync chan *registry.Service
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}
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type updates struct {
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sync.RWMutex
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services map[uint64]*update
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}
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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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@ -126,56 +129,6 @@ var (
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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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@ -205,9 +158,9 @@ func configure(g *gossipRegistry, opts ...registry.Option) error {
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}
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// shutdown old member
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if g.member != nil {
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g.Stop()
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}
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// new done chan
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g.done = make(chan bool)
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// replace addresses
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curAddrs = newAddrs
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@ -220,16 +173,18 @@ func configure(g *gossipRegistry, opts ...registry.Option) error {
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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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// set config from options
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if config, ok := g.options.Context.Value(configKey{}).(*memberlist.Config); ok && config != nil {
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c = config
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}
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if hostport, ok := g.options.Context.Value(contextAddress{}).(string); ok {
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host, port, err := net.SplitHostPort(hostport)
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// set address
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if address, ok := g.options.Context.Value(addressKey{}).(string); ok {
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host, port, err := net.SplitHostPort(address)
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if err == nil {
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pn, err := strconv.Atoi(port)
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p, err := strconv.Atoi(port)
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if err == nil {
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c.BindPort = pn
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c.BindPort = p
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}
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c.BindAddr = host
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}
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@ -238,12 +193,13 @@ func configure(g *gossipRegistry, opts ...registry.Option) error {
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c.BindPort = 0
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}
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if hostport, ok := g.options.Context.Value(contextAdvertise{}).(string); ok {
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host, port, err := net.SplitHostPort(hostport)
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// set the advertise address
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if advertise, ok := g.options.Context.Value(advertiseKey{}).(string); ok {
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host, port, err := net.SplitHostPort(advertise)
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if err == nil {
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pn, err := strconv.Atoi(port)
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p, err := strconv.Atoi(port)
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if err == nil {
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c.AdvertisePort = pn
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c.AdvertisePort = p
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}
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c.AdvertiseAddr = host
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}
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@ -257,7 +213,7 @@ func configure(g *gossipRegistry, opts ...registry.Option) error {
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// set a secret key if secure
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if g.options.Secure {
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k, ok := g.options.Context.Value(contextSecretKey{}).([]byte)
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k, ok := g.options.Context.Value(secretKey{}).([]byte)
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if !ok {
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// use the default secret
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k = DefaultSecret
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@ -265,10 +221,13 @@ 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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// set connect retry
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if v, ok := g.options.Context.Value(connectRetryKey{}).(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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// set connect timeout
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if td, ok := g.options.Context.Value(connectTimeoutKey{}).(time.Duration); ok {
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g.connectTimeout = td
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}
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@ -300,19 +259,24 @@ func configure(g *gossipRegistry, opts ...registry.Option) error {
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// set internals
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g.Lock()
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if len(curAddrs) > 0 {
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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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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("[gossip]: Registry Listening on %s", m.LocalNode().Address())
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log.Logf("[gossip] Registry Listening on %s", m.LocalNode().Address())
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// try connect
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return g.connect(curAddrs)
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}
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@ -328,7 +292,7 @@ func (b *broadcast) Message() []byte {
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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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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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@ -429,6 +393,55 @@ func (d *delegate) MergeRemoteState(buf []byte, join bool) {
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}
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}
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func (g *gossipRegistry) connect(addrs []string) 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] connect timeout %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] connect success for %v", g.addrs)
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return nil
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} else {
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log.Logf("[gossip] connect failed for %v", g.addrs)
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}
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}
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}
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return nil
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}
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func (g *gossipRegistry) publish(action string, services []*registry.Service) {
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g.RLock()
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for _, sub := range g.watchers {
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@ -462,47 +475,75 @@ func (g *gossipRegistry) subscribe() (chan *registry.Result, chan bool) {
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return next, exit
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}
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func (g *gossipRegistry) wait() {
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ctx := g.options.Context
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if c, ok := ctx.Value(contextContext{}).(context.Context); ok && c != nil {
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ctx = c
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}
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ch := make(chan os.Signal, 1)
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signal.Notify(ch, syscall.SIGTERM, syscall.SIGINT, syscall.SIGQUIT)
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select {
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// wait on kill signal
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case <-ch:
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// wait on context cancel
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case <-ctx.Done():
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}
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g.Stop()
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}
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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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select {
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case <-g.done:
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return nil
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default:
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close(g.done)
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g.done = nil
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}
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g.Lock()
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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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}
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return nil
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}
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func (g *gossipRegistry) run() {
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var mtx sync.Mutex
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updates := map[uint64]*update{}
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// connectLoop attempts to reconnect to the memberlist
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func (g *gossipRegistry) connectLoop() {
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// try every second
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ticker := time.NewTicker(1 * time.Second)
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defer ticker.Stop()
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// expiry loop
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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 <-g.options.Context.Done():
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g.Stop()
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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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// only process if we have a memberlist
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if g.member == nil {
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g.RUnlock()
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continue
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}
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// self
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local := g.member.LocalNode().Address()
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// operate on each member
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for node, action := range g.members {
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switch action {
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// process leave event
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case nodeActionLeave:
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// don't process self
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if node == local {
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continue
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}
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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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// connect to all the members
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// TODO: only connect to new members
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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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func (g *gossipRegistry) expiryLoop(updates *updates) {
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ticker := time.NewTicker(ExpiryTick)
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defer ticker.Stop()
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@ -513,14 +554,14 @@ func (g *gossipRegistry) run() {
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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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updates.Lock()
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// process all the updates
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for k, v := range updates {
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for k, v := range updates.services {
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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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delete(updates.services, 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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@ -528,53 +569,43 @@ func (g *gossipRegistry) run() {
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}
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}
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mtx.Unlock()
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updates.Unlock()
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}
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}
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}
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}()
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go func() {
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// process member events
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func (g *gossipRegistry) eventLoop() {
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for {
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select {
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// return when done
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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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case ev := <-g.events:
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// TODO: nonblocking update
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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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if _, ok := g.members[ev.node]; ok {
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g.members[ev.node] = ev.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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}
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func (g *gossipRegistry) run() {
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updates := &updates{
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services: make(map[uint64]*update),
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}
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// expiry loop
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go g.expiryLoop(updates)
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// event loop
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go g.eventLoop()
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// connect loop
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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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if g.member != nil {
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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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}
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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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go g.connectLoop()
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}
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// process the updates
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@ -597,9 +628,9 @@ func (g *gossipRegistry) run() {
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if u.Update.Expires > 0 {
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// create a hash of this service
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if hash, err := hashstructure.Hash(u.Service, nil); err == nil {
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mtx.Lock()
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updates[hash] = u
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mtx.Unlock()
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updates.Lock()
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updates.services[hash] = u
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updates.Unlock()
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}
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}
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case actionTypeDelete:
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@ -618,9 +649,9 @@ func (g *gossipRegistry) run() {
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// delete from expiry checks
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if hash, err := hashstructure.Hash(u.Service, nil); err == nil {
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mtx.Lock()
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delete(updates, hash)
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mtx.Unlock()
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updates.Lock()
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delete(updates.services, hash)
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updates.Unlock()
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}
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case actionTypeSync:
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// no sync channel provided
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@ -676,7 +707,7 @@ func (g *gossipRegistry) Register(s *registry.Service, opts ...registry.Register
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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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return fmt.Errorf("Require register TTL or interval for memberlist.Config")
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}
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up := &pb.Update{
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@ -766,30 +797,28 @@ func (g *gossipRegistry) String() string {
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}
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func NewRegistry(opts ...registry.Option) registry.Registry {
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gossip := &gossipRegistry{
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g := &gossipRegistry{
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options: registry.Options{
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Context: context.Background(),
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},
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updates: make(chan *update, 100),
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done: make(chan bool),
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events: make(chan *event, 100),
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updates: make(chan *update, 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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go gossip.run()
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go g.run()
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// configure the gossiper
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if err := configure(gossip, opts...); err != nil {
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log.Fatalf("Error configuring registry: %v", err)
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if err := configure(g, opts...); err != nil {
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log.Fatalf("[gossip] Error configuring registry: %v", err)
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}
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// wait for setup
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<-time.After(gossip.interval * 2)
|
||||
<-time.After(g.interval * 2)
|
||||
|
||||
go gossip.wait()
|
||||
|
||||
return gossip
|
||||
return g
|
||||
}
|
||||
|
||||
@ -35,7 +35,7 @@ func newRegistry(opts ...registry.Option) registry.Registry {
|
||||
return r
|
||||
}
|
||||
|
||||
func TestRegistryBroadcast(t *testing.T) {
|
||||
func TestGossipRegistryBroadcast(t *testing.T) {
|
||||
mc1 := newMemberlistConfig()
|
||||
r1 := newRegistry(Config(mc1), Address("127.0.0.1:54321"))
|
||||
|
||||
@ -45,65 +45,57 @@ func TestRegistryBroadcast(t *testing.T) {
|
||||
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"}
|
||||
svc1 := ®istry.Service{Name: "service.1", Version: "0.0.0.1"}
|
||||
svc2 := ®istry.Service{Name: "service.2", Version: "0.0.0.2"}
|
||||
|
||||
t.Logf("register service svc1 on r1\n")
|
||||
if err := r1.Register(svc1, registry.RegisterTTL(10*time.Second)); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
t.Logf("register service svc2 on r2\n")
|
||||
if err := r2.Register(svc2, registry.RegisterTTL(10*time.Second)); err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
var found bool
|
||||
t.Logf("list services on r1\n")
|
||||
svcs, err := r1.ListServices()
|
||||
if err != nil {
|
||||
t.Fatal(err)
|
||||
}
|
||||
|
||||
for _, svc := range svcs {
|
||||
if svc.Name == "r2-svc" {
|
||||
if svc.Name == "service.2" {
|
||||
found = true
|
||||
}
|
||||
}
|
||||
if !found {
|
||||
t.Fatalf("r2-svc not found in r1, broadcast not work")
|
||||
} else {
|
||||
t.Logf("r2-svc found in r1, all ok")
|
||||
t.Fatalf("[gossip registry] service.2 not found in r1, broadcast not work")
|
||||
}
|
||||
|
||||
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" {
|
||||
if svc.Name == "service.1" {
|
||||
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.Fatalf("[gossip registry] broadcast failed: service.1 not found in r2")
|
||||
}
|
||||
|
||||
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) {
|
||||
func TestGossipRegistryRetry(t *testing.T) {
|
||||
mc1 := newMemberlistConfig()
|
||||
r1 := newRegistry(Config(mc1), Address("127.0.0.1:54321"))
|
||||
|
||||
@ -113,8 +105,8 @@ func TestRegistryRetry(t *testing.T) {
|
||||
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"}
|
||||
svc1 := ®istry.Service{Name: "service.1", Version: "0.0.0.1"}
|
||||
svc2 := ®istry.Service{Name: "service.2", Version: "0.0.0.2"}
|
||||
|
||||
var mu sync.Mutex
|
||||
ch := make(chan struct{})
|
||||
@ -150,17 +142,17 @@ func TestRegistryRetry(t *testing.T) {
|
||||
}
|
||||
|
||||
for _, svc := range svcs {
|
||||
if svc.Name == "r1-svc" {
|
||||
if svc.Name == "service.1" {
|
||||
found = true
|
||||
}
|
||||
}
|
||||
|
||||
if !found {
|
||||
t.Fatalf("r1-svc not found in r2, broadcast not work, retry cant test")
|
||||
t.Fatalf("[gossip registry] broadcast failed: service.1 not found in r2")
|
||||
}
|
||||
|
||||
t.Logf("stop r1\n")
|
||||
if err = r1.(*gossipRegistry).Stop(); err != nil {
|
||||
t.Fatalf("cant stop r1 registry %v", err)
|
||||
t.Fatalf("[gossip registry] failed to stop registry: %v", err)
|
||||
}
|
||||
|
||||
mu.Lock()
|
||||
@ -176,26 +168,24 @@ func TestRegistryRetry(t *testing.T) {
|
||||
}
|
||||
|
||||
for _, svc := range svcs {
|
||||
if svc.Name == "r1-svc" {
|
||||
if svc.Name == "service.1" {
|
||||
found = true
|
||||
}
|
||||
}
|
||||
|
||||
if found {
|
||||
t.Fatalf("r1-svc found in r2, something wrong")
|
||||
t.Fatalf("[gossip registry] service.1 found in r2")
|
||||
}
|
||||
|
||||
t.Logf("start r1\n")
|
||||
if tr := os.Getenv("TRAVIS"); len(tr) > 0 {
|
||||
t.Logf("[gossip registry] skip test on travis")
|
||||
t.Skip()
|
||||
return
|
||||
}
|
||||
|
||||
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
|
||||
svcs, err = r2.ListServices()
|
||||
if err != nil {
|
||||
@ -203,12 +193,13 @@ func TestRegistryRetry(t *testing.T) {
|
||||
}
|
||||
|
||||
for _, svc := range svcs {
|
||||
if svc.Name == "r1-svc" {
|
||||
if svc.Name == "service.1" {
|
||||
found = true
|
||||
}
|
||||
}
|
||||
|
||||
if !found {
|
||||
t.Fatalf("r1-svc not found in r2, connect retry not works")
|
||||
t.Fatalf("[gossip registry] connect retry failed: service.1 not found in r2")
|
||||
}
|
||||
|
||||
if err := r1.Deregister(svc1); err != nil {
|
||||
|
||||
@ -8,55 +8,51 @@ import (
|
||||
"github.com/micro/go-micro/registry"
|
||||
)
|
||||
|
||||
type contextSecretKey struct{}
|
||||
type secretKey struct{}
|
||||
type addressKey struct{}
|
||||
type configKey struct{}
|
||||
type advertiseKey struct{}
|
||||
type connectTimeoutKey struct{}
|
||||
type connectRetryKey struct{}
|
||||
|
||||
// helper for setting registry options
|
||||
func setRegistryOption(k, v interface{}) registry.Option {
|
||||
return func(o *registry.Options) {
|
||||
if o.Context == nil {
|
||||
o.Context = context.Background()
|
||||
}
|
||||
o.Context = context.WithValue(o.Context, k, v)
|
||||
}
|
||||
}
|
||||
|
||||
// Secret specifies an encryption key. The value should be either
|
||||
// 16, 24, or 32 bytes to select AES-128, AES-192, or AES-256.
|
||||
func Secret(k []byte) registry.Option {
|
||||
return setRegistryOption(contextSecretKey{}, k)
|
||||
return setRegistryOption(secretKey{}, k)
|
||||
}
|
||||
|
||||
type contextAddress struct{}
|
||||
|
||||
// Address to bind to - host:port
|
||||
func Address(a string) registry.Option {
|
||||
return setRegistryOption(contextAddress{}, a)
|
||||
return setRegistryOption(addressKey{}, a)
|
||||
}
|
||||
|
||||
type contextConfig struct{}
|
||||
|
||||
// Config allow to inject a *memberlist.Config struct for configuring gossip
|
||||
// Config sets *memberlist.Config for configuring gossip
|
||||
func Config(c *memberlist.Config) registry.Option {
|
||||
return setRegistryOption(contextConfig{}, c)
|
||||
return setRegistryOption(configKey{}, c)
|
||||
}
|
||||
|
||||
type contextAdvertise struct{}
|
||||
|
||||
// The address to advertise for other gossip members - host:port
|
||||
// The address to advertise for other gossip members to connect to - host:port
|
||||
func Advertise(a string) registry.Option {
|
||||
return setRegistryOption(contextAdvertise{}, a)
|
||||
return setRegistryOption(advertiseKey{}, a)
|
||||
}
|
||||
|
||||
type contextContext struct{}
|
||||
|
||||
// Context specifies a context for the registry.
|
||||
// Can be used to signal shutdown of the registry.
|
||||
// Can be used for extra option values.
|
||||
func Context(ctx context.Context) registry.Option {
|
||||
return setRegistryOption(contextContext{}, ctx)
|
||||
}
|
||||
|
||||
type connectTimeout struct{}
|
||||
|
||||
// ConnectTimeout specify registry connect timeout use -1 to specify infinite
|
||||
// ConnectTimeout sets the registry connect timeout. Use -1 to specify infinite timeout
|
||||
func ConnectTimeout(td time.Duration) registry.Option {
|
||||
return setRegistryOption(connectTimeout{}, td)
|
||||
return setRegistryOption(connectTimeoutKey{}, td)
|
||||
}
|
||||
|
||||
type connectRetry struct{}
|
||||
|
||||
// ConnectRetry enable reconnect to registry then connection closed,
|
||||
// ConnectRetry enables reconnect to registry then connection closed,
|
||||
// use with ConnectTimeout to specify how long retry
|
||||
func ConnectRetry(v bool) registry.Option {
|
||||
return setRegistryOption(connectRetry{}, v)
|
||||
return setRegistryOption(connectRetryKey{}, v)
|
||||
}
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user