registry: gossip unify registry option passing, optimize

Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>

registry/gossip/README.md

@@ -1,6 +1,6 @@
 # Gossip Registry
 
-Gossip is a zero dependency registry which uses hashicorp/memberlist to broadcast registry information 
+Gossip is a zero dependency registry which uses github.com/hashicorp/memberlist to broadcast registry information 
 via the SWIM protocol. 
 
 ## Usage

registry/gossip/context.go

@@ -0,0 +1,17 @@
+package gossip
+
+import (
+	"context"
+
+	"github.com/micro/go-micro/registry"
+)
+
+// setRegistryOption returns a function to setup a context with given value
+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)
+	}
+}

registry/gossip/gossip.go

@@ -7,9 +7,11 @@ import (
 	"io/ioutil"
 	"net"
 	"os"
+	"os/signal"
 	"strconv"
 	"strings"
 	"sync"
+	"syscall"
 	"time"
 
 	"github.com/golang/protobuf/proto"
@@ -21,10 +23,35 @@ import (
 	"github.com/mitchellh/hashstructure"
 )
 
+// use registry.Result int32 values after it switches from string to int32 types
+// type actionType int32
+// type updateType int32
+
 const (
-	addAction  = "update"
+	actionTypeInvalid int32 = iota
-	delAction  = "delete"
+	actionTypeCreate
-	syncAction = "sync"
+	actionTypeDelete
+	actionTypeUpdate
+	actionTypeSync
+)
+
+func actionTypeString(t int32) string {
+	switch t {
+	case actionTypeCreate:
+		return "create"
+	case actionTypeDelete:
+		return "delete"
+	case actionTypeUpdate:
+		return "update"
+	case actionTypeSync:
+		return "sync"
+	}
+	return "invalid"
+}
+
+const (
+	updateTypeInvalid int32 = iota
+	updateTypeService
 )
 
 type broadcast struct {
@@ -93,23 +120,18 @@ func configure(g *gossipRegistry, opts ...registry.Option) error {
 
 	// shutdown old member
 	if g.member != nil {
-		g.member.Shutdown()
+		g.Stop()
 	}
 
 	// replace addresses
 	curAddrs = newAddrs
 
-	// create a queue
-	queue := &memberlist.TransmitLimitedQueue{
-		NumNodes: func() int {
-			return len(curAddrs)
-		},
-		RetransmitMult: 3,
-	}
-
 	// create a new default config
 	c := memberlist.DefaultLocalConfig()
 
+	// log to dev null
+	c.LogOutput = ioutil.Discard
+
 	if optConfig, ok := g.options.Context.Value(contextConfig{}).(*memberlist.Config); ok && optConfig != nil {
 		c = optConfig
 	}
@@ -145,15 +167,6 @@ func configure(g *gossipRegistry, opts ...registry.Option) error {
 	// set the name
 	c.Name = strings.Join([]string{"micro", hostname, uuid.New().String()}, "-")
 
-	// set the delegate
-	c.Delegate = &delegate{
-		updates: g.updates,
-		queue:   queue,
-	}
-
-	// log to dev null
-	c.LogOutput = ioutil.Discard
-
 	// set a secret key if secure
 	if g.options.Secure {
 		k, ok := g.options.Context.Value(contextSecretKey{}).([]byte)
@@ -164,6 +177,20 @@ func configure(g *gossipRegistry, opts ...registry.Option) error {
 		c.SecretKey = k
 	}
 
+	// create a queue
+	queue := &memberlist.TransmitLimitedQueue{
+		NumNodes: func() int {
+			return len(curAddrs)
+		},
+		RetransmitMult: 3,
+	}
+
+	// set the delegate
+	c.Delegate = &delegate{
+		updates: g.updates,
+		queue:   queue,
+	}
+
 	// create the memberlist
 	m, err := memberlist.Create(c)
 	if err != nil {
@@ -187,31 +214,12 @@ func configure(g *gossipRegistry, opts ...registry.Option) error {
 	return nil
 }
 
+func (*broadcast) UniqueBroadcast() {}
+
 func (b *broadcast) Invalidates(other memberlist.Broadcast) bool {
-	up := new(pb.Update)
-	if err := proto.Unmarshal(other.Message(), up); err != nil {
 	return false
 }
 
-	// ids do not match
-	if b.update.Id == up.Id {
-		return false
-	}
-
-	// timestamps do not match
-	if b.update.Timestamp != up.Timestamp {
-		return false
-	}
-
-	// type does not match
-	if b.update.Type != up.Type {
-		return false
-	}
-
-	// invalidates
-	return true
-}
-
 func (b *broadcast) Message() []byte {
 	up, err := proto.Marshal(b.update)
 	if err != nil {
@@ -242,7 +250,7 @@ func (d *delegate) NotifyMsg(b []byte) {
 		}
 
 		// only process service action
-		if up.Type != "service" {
+		if up.Type != updateTypeService {
 			return
 		}
 
@@ -280,7 +288,7 @@ func (d *delegate) LocalState(join bool) []byte {
 
 	d.updates <- &update{
 		Update: &pb.Update{
-			Action: syncAction,
+			Action: actionTypeSync,
 		},
 		sync: syncCh,
 	}
@@ -309,7 +317,7 @@ func (d *delegate) MergeRemoteState(buf []byte, join bool) {
 	for _, service := range services {
 		for _, srv := range service {
 			d.updates <- &update{
-				Update:  &pb.Update{Action: addAction},
+				Update:  &pb.Update{Action: actionTypeCreate},
 				Service: srv,
 				sync:    nil,
 			}
@@ -350,6 +358,31 @@ func (g *gossipRegistry) subscribe() (chan *registry.Result, chan bool) {
 	return next, exit
 }
 
+func (g *gossipRegistry) wait() {
+	ctx := g.options.Context
+
+	if c, ok := ctx.Value(contextContext{}).(context.Context); ok && c != nil {
+		ctx = c
+	}
+
+	ch := make(chan os.Signal, 1)
+	signal.Notify(ch, syscall.SIGTERM, syscall.SIGINT, syscall.SIGQUIT)
+
+	select {
+	// wait on kill signal
+	case <-ch:
+	// wait on context cancel
+	case <-ctx.Done():
+	}
+
+	g.Stop()
+}
+
+func (g *gossipRegistry) Stop() {
+	g.member.Leave(g.interval * 2)
+	g.member.Shutdown()
+}
+
 func (g *gossipRegistry) run() {
 	var mtx sync.Mutex
 	updates := map[uint64]*update{}
@@ -367,11 +400,11 @@ func (g *gossipRegistry) run() {
 			// process all the updates
 			for k, v := range updates {
 				// check if expiry time has passed
-				if d := (v.Update.Timestamp + v.Update.Expires); d < now {
+				if d := (v.Update.Expires); d < now {
 					// delete from records
 					delete(updates, k)
 					// set to delete
-					v.Update.Action = delAction
+					v.Update.Action = actionTypeDelete
 					// fire a new update
 					g.updates <- v
 				}
@@ -384,7 +417,7 @@ func (g *gossipRegistry) run() {
 	// process the updates
 	for u := range g.updates {
 		switch u.Update.Action {
-		case addAction:
+		case actionTypeCreate:
 			g.Lock()
 			if service, ok := g.services[u.Service.Name]; !ok {
 				g.services[u.Service.Name] = []*registry.Service{u.Service}
@@ -395,7 +428,7 @@ func (g *gossipRegistry) run() {
 			g.Unlock()
 
 			// publish update to watchers
-			go g.publish(addAction, []*registry.Service{u.Service})
+			go g.publish(actionTypeString(actionTypeCreate), []*registry.Service{u.Service})
 
 			// we need to expire the node at some point in the future
 			if u.Update.Expires > 0 {
@@ -406,7 +439,7 @@ func (g *gossipRegistry) run() {
 					mtx.Unlock()
 				}
 			}
-		case delAction:
+		case actionTypeDelete:
 			g.Lock()
 			if service, ok := g.services[u.Service.Name]; ok {
 				if services := delServices(service, []*registry.Service{u.Service}); len(services) == 0 {
@@ -418,7 +451,7 @@ func (g *gossipRegistry) run() {
 			g.Unlock()
 
 			// publish update to watchers
-			go g.publish(delAction, []*registry.Service{u.Service})
+			go g.publish(actionTypeString(actionTypeDelete), []*registry.Service{u.Service})
 
 			// delete from expiry checks
 			if hash, err := hashstructure.Hash(u.Service, nil); err == nil {
@@ -426,7 +459,7 @@ func (g *gossipRegistry) run() {
 				delete(updates, hash)
 				mtx.Unlock()
 			}
-		case syncAction:
+		case actionTypeSync:
 			// no sync channel provided
 			if u.sync == nil {
 				continue
@@ -441,7 +474,7 @@ func (g *gossipRegistry) run() {
 				}
 
 				// publish to watchers
-				go g.publish(addAction, service)
+				go g.publish(actionTypeString(actionTypeCreate), service)
 			}
 
 			g.RUnlock()
@@ -480,11 +513,9 @@ func (g *gossipRegistry) Register(s *registry.Service, opts ...registry.Register
 	}
 
 	up := &pb.Update{
-		Id:        uuid.New().String(),
+		Expires: uint64(time.Now().Add(options.TTL).UnixNano()),
-		Timestamp: uint64(time.Now().UnixNano()),
+		Action:  actionTypeCreate,
-		Expires:   uint64(options.TTL.Nanoseconds()),
+		Type:    updateTypeService,
-		Action:    "update",
-		Type:      "service",
 		Metadata: map[string]string{
 			"Content-Type": "application/json",
 		},
@@ -519,10 +550,8 @@ func (g *gossipRegistry) Deregister(s *registry.Service) error {
 	g.Unlock()
 
 	up := &pb.Update{
-		Id:        uuid.New().String(),
+		Action: actionTypeDelete,
-		Timestamp: uint64(time.Now().UnixNano()),
+		Type:   updateTypeService,
-		Action:    "delete",
-		Type:      "service",
 		Metadata: map[string]string{
 			"Content-Type": "application/json",
 		},
@@ -590,5 +619,7 @@ func NewRegistry(opts ...registry.Option) registry.Registry {
 	// wait for setup
 	<-time.After(gossip.interval * 2)
 
+	go gossip.wait()
+
 	return gossip
 }

registry/gossip/gossip_test.go

@@ -0,0 +1,199 @@
+package gossip_test
+
+import (
+	"context"
+	"os"
+	"sync"
+	"testing"
+	"time"
+
+	"github.com/google/uuid"
+	"github.com/hashicorp/memberlist"
+	micro "github.com/micro/go-micro"
+	"github.com/micro/go-micro/client"
+	"github.com/micro/go-micro/registry"
+	"github.com/micro/go-micro/registry/gossip"
+	pb "github.com/micro/go-micro/registry/gossip/proto"
+	"github.com/micro/go-micro/selector"
+	"github.com/micro/go-micro/server"
+)
+
+var (
+	r1 registry.Registry
+	r2 registry.Registry
+	mu sync.Mutex
+)
+
+func newConfig() *memberlist.Config {
+	wc := memberlist.DefaultLANConfig()
+	wc.DisableTcpPings = false
+	wc.GossipVerifyIncoming = false
+	wc.GossipVerifyOutgoing = false
+	wc.EnableCompression = false
+	wc.LogOutput = os.Stderr
+	wc.ProtocolVersion = 4
+	wc.Name = uuid.New().String()
+	return wc
+}
+
+func newRegistries() {
+	mu.Lock()
+	defer mu.Unlock()
+
+	if r1 != nil && r2 != nil {
+		return
+	}
+
+	wc1 := newConfig()
+	wc2 := newConfig()
+
+	rops1 := []registry.Option{gossip.Config(wc1), gossip.Address("127.0.0.1:54321")}
+	rops2 := []registry.Option{gossip.Config(wc2), gossip.Address("127.0.0.2:54321"), registry.Addrs("127.0.0.1:54321")}
+
+	r1 = gossip.NewRegistry(rops1...) // first started without members
+	r2 = gossip.NewRegistry(rops2...) // second started joining
+}
+
+func TestRegistryBroadcast(t *testing.T) {
+	newRegistries()
+
+	svc1 := &registry.Service{Name: "r1-svc", Version: "0.0.0.1"}
+	svc2 := &registry.Service{Name: "r2-svc", Version: "0.0.0.2"}
+
+	<-time.After(1 * time.Second)
+	if err := r1.Register(svc1); err != nil {
+		t.Fatal(err)
+	}
+	<-time.After(1 * time.Second)
+	if err := r2.Register(svc2); err != nil {
+		t.Fatal(err)
+	}
+
+	var found bool
+
+	svcs, err := r1.ListServices()
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	for _, svc := range svcs {
+		if svc.Name == "r2-svc" {
+			found = true
+		}
+	}
+	if !found {
+		t.Fatalf("r2-svc not found in r1, broadcast not work")
+	}
+
+	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 not found in r2, broadcast not work")
+	}
+
+	if err := r1.Deregister(svc1); err != nil {
+		t.Fatal(err)
+	}
+	if err := r2.Deregister(svc2); err != nil {
+		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
+}

registry/gossip/options.go

@@ -12,34 +12,35 @@ type contextSecretKey struct{}
 // 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 func(o *registry.Options) {
+	return setRegistryOption(contextSecretKey{}, k)
-		o.Context = context.WithValue(o.Context, contextSecretKey{}, k)
-	}
 }
 
 type contextAddress struct{}
 
 // Address to bind to - host:port
 func Address(a string) registry.Option {
-	return func(o *registry.Options) {
+	return setRegistryOption(contextAddress{}, a)
-		o.Context = context.WithValue(o.Context, contextAddress{}, a)
-	}
 }
 
 type contextConfig struct{}
 
 // Config allow to inject a *memberlist.Config struct for configuring gossip
 func Config(c *memberlist.Config) registry.Option {
-	return func(o *registry.Options) {
+	return setRegistryOption(contextConfig{}, c)
-		o.Context = context.WithValue(o.Context, contextConfig{}, c)
-	}
 }
 
 type contextAdvertise struct{}
 
 // The address to advertise for other gossip members - host:port
 func Advertise(a string) registry.Option {
-	return func(o *registry.Options) {
+	return setRegistryOption(contextAdvertise{}, a)
-		o.Context = context.WithValue(o.Context, contextAdvertise{}, 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)
 }

registry/gossip/proto/gossip.pb.go

@@ -3,9 +3,12 @@
 
 package gossip
 
-import proto "github.com/golang/protobuf/proto"
+import (
-import fmt "fmt"
+	fmt "fmt"
-import math "math"
+	math "math"
+
+	proto "github.com/golang/protobuf/proto"
+)
 
 // Reference imports to suppress errors if they are not otherwise used.
 var _ = proto.Marshal
@@ -20,16 +23,12 @@ const _ = proto.ProtoPackageIsVersion2 // please upgrade the proto package
 
 // Update is the message broadcast
 type Update struct {
-	// unique id of update
-	Id string `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
-	// unix nano timestamp of update
-	Timestamp uint64 `protobuf:"varint,2,opt,name=timestamp,proto3" json:"timestamp,omitempty"`
 	// time to live for entry
-	Expires uint64 `protobuf:"varint,3,opt,name=expires,proto3" json:"expires,omitempty"`
+	Expires uint64 `protobuf:"varint,1,opt,name=expires,proto3" json:"expires,omitempty"`
-	// type of update; service
+	// type of update
-	Type string `protobuf:"bytes,4,opt,name=type,proto3" json:"type,omitempty"`
+	Type int32 `protobuf:"varint,2,opt,name=type,proto3" json:"type,omitempty"`
-	// what action is taken; add, del, put
+	// what action is taken
-	Action string `protobuf:"bytes,5,opt,name=action,proto3" json:"action,omitempty"`
+	Action int32 `protobuf:"varint,3,opt,name=action,proto3" json:"action,omitempty"`
 	// any other associated metadata about the data
 	Metadata map[string]string `protobuf:"bytes,6,rep,name=metadata,proto3" json:"metadata,omitempty" protobuf_key:"bytes,1,opt,name=key,proto3" protobuf_val:"bytes,2,opt,name=value,proto3"`
 	// the payload data;
@@ -43,16 +42,17 @@ func (m *Update) Reset()         { *m = Update{} }
 func (m *Update) String() string { return proto.CompactTextString(m) }
 func (*Update) ProtoMessage()    {}
 func (*Update) Descriptor() ([]byte, []int) {
-	return fileDescriptor_gossip_fd1eb378131a5d12, []int{0}
+	return fileDescriptor_18cba623e76e57f3, []int{0}
 }
+
 func (m *Update) XXX_Unmarshal(b []byte) error {
 	return xxx_messageInfo_Update.Unmarshal(m, b)
 }
 func (m *Update) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
 	return xxx_messageInfo_Update.Marshal(b, m, deterministic)
 }
-func (dst *Update) XXX_Merge(src proto.Message) {
+func (m *Update) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_Update.Merge(dst, src)
+	xxx_messageInfo_Update.Merge(m, src)
 }
 func (m *Update) XXX_Size() int {
 	return xxx_messageInfo_Update.Size(m)
@@ -63,20 +63,6 @@ func (m *Update) XXX_DiscardUnknown() {
 
 var xxx_messageInfo_Update proto.InternalMessageInfo
 
-func (m *Update) GetId() string {
-	if m != nil {
-		return m.Id
-	}
-	return ""
-}
-
-func (m *Update) GetTimestamp() uint64 {
-	if m != nil {
-		return m.Timestamp
-	}
-	return 0
-}
-
 func (m *Update) GetExpires() uint64 {
 	if m != nil {
 		return m.Expires
@@ -84,18 +70,18 @@ func (m *Update) GetExpires() uint64 {
 	return 0
 }
 
-func (m *Update) GetType() string {
+func (m *Update) GetType() int32 {
 	if m != nil {
 		return m.Type
 	}
-	return ""
+	return 0
 }
 
-func (m *Update) GetAction() string {
+func (m *Update) GetAction() int32 {
 	if m != nil {
 		return m.Action
 	}
-	return ""
+	return 0
 }
 
 func (m *Update) GetMetadata() map[string]string {
@@ -118,25 +104,24 @@ func init() {
 }
 
 func init() {
-	proto.RegisterFile("github.com/micro/go-micro/registry/gossip/proto/gossip.proto", fileDescriptor_gossip_fd1eb378131a5d12)
+	proto.RegisterFile("github.com/micro/go-micro/registry/gossip/proto/gossip.proto", fileDescriptor_18cba623e76e57f3)
 }
 
-var fileDescriptor_gossip_fd1eb378131a5d12 = []byte{
+var fileDescriptor_18cba623e76e57f3 = []byte{
-	// 251 bytes of a gzipped FileDescriptorProto
+	// 227 bytes of a gzipped FileDescriptorProto
-	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x54, 0x90, 0xcf, 0x4a, 0xc4, 0x30,
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x54, 0x8f, 0xc1, 0x4a, 0x03, 0x31,
-	0x10, 0x87, 0x69, 0xb6, 0x9b, 0xb5, 0xe3, 0x1f, 0x64, 0x10, 0x09, 0xb2, 0x87, 0xe2, 0xa9, 0x17,
+	0x14, 0x45, 0x49, 0xa7, 0x4d, 0xed, 0x53, 0x41, 0x1e, 0x22, 0x41, 0x5c, 0x0c, 0xae, 0x66, 0xe3,
-	0x5b, 0xd0, 0xcb, 0xa2, 0x5e, 0x3d, 0x7a, 0x09, 0xf8, 0x00, 0xd9, 0x36, 0xd4, 0xa0, 0xd9, 0x84,
+	0x0c, 0xe8, 0xa6, 0xa8, 0x5b, 0x97, 0x6e, 0x02, 0x7e, 0x40, 0x3a, 0x0d, 0x31, 0xe8, 0x34, 0x21,
-	0x64, 0x56, 0xec, 0x13, 0xf8, 0xda, 0xb2, 0x69, 0x54, 0xbc, 0x7d, 0xdf, 0xcc, 0x24, 0x99, 0x5f,
+	0x79, 0x15, 0xf3, 0xa9, 0xfe, 0x8d, 0x34, 0x89, 0x42, 0x77, 0xe7, 0x24, 0x37, 0xdc, 0x1b, 0x78,
-	0xe0, 0x71, 0x34, 0xf4, 0xba, 0xdf, 0xb6, 0xbd, 0xb3, 0x9d, 0x35, 0x7d, 0x70, 0xdd, 0xe8, 0x6e,
+	0x36, 0x96, 0xde, 0xf7, 0x9b, 0x7e, 0x74, 0xd3, 0x30, 0xd9, 0x31, 0xb8, 0xc1, 0xb8, 0xbb, 0x02,
-	0x66, 0x08, 0x7a, 0x34, 0x91, 0xc2, 0xd4, 0x8d, 0x2e, 0x46, 0xe3, 0x3b, 0x1f, 0x1c, 0xb9, 0x2c,
+	0x41, 0x1b, 0x1b, 0x29, 0xa4, 0xc1, 0xb8, 0x18, 0xad, 0x1f, 0x7c, 0x70, 0xe4, 0xaa, 0xf4, 0x59,
-	0x6d, 0x12, 0xe4, 0xb3, 0x5d, 0x7f, 0x31, 0xe0, 0x2f, 0x7e, 0x50, 0xa4, 0xf1, 0x0c, 0x98, 0x19,
+	0x90, 0x17, 0xbb, 0xfd, 0x61, 0xc0, 0xdf, 0xfc, 0x56, 0x91, 0x46, 0x01, 0x4b, 0xfd, 0xed, 0x6d,
-	0x44, 0x51, 0x17, 0x4d, 0x25, 0x99, 0x19, 0x70, 0x0d, 0x15, 0x19, 0xab, 0x23, 0x29, 0xeb, 0x05,
+	0xd0, 0x51, 0xb0, 0x96, 0x75, 0x73, 0xf9, 0xa7, 0x88, 0x30, 0xa7, 0xe4, 0xb5, 0x98, 0xb5, 0xac,
-	0xab, 0x8b, 0xa6, 0x94, 0x7f, 0x05, 0x14, 0xb0, 0xd2, 0x9f, 0xde, 0x04, 0x1d, 0xc5, 0x22, 0xf5,
+	0x5b, 0xc8, 0xcc, 0x78, 0x05, 0x5c, 0x8d, 0x64, 0xdd, 0x4e, 0x34, 0xf9, 0xb4, 0x1a, 0xae, 0xe1,
-	0x7e, 0x14, 0x11, 0x4a, 0x9a, 0xbc, 0x16, 0x65, 0xba, 0x29, 0x31, 0x5e, 0x02, 0x57, 0x3d, 0x19,
+	0x64, 0xd2, 0xa4, 0xb6, 0x8a, 0x94, 0xe0, 0x6d, 0xd3, 0x9d, 0xde, 0xdf, 0xf4, 0xb5, 0xb9, 0xf4,
-	0xb7, 0x13, 0xcb, 0x54, 0xcd, 0x86, 0x1b, 0x38, 0xb2, 0x9a, 0xd4, 0xa0, 0x48, 0x09, 0x5e, 0x2f,
+	0xf4, 0xaf, 0xf5, 0xfa, 0x65, 0x47, 0x21, 0xc9, 0xff, 0xf4, 0xa1, 0x25, 0xbf, 0x5a, 0xb6, 0xac,
-	0x9a, 0xe3, 0xdb, 0x75, 0x9b, 0xf7, 0x9c, 0xb7, 0x6a, 0x9f, 0x73, 0xfb, 0x69, 0x47, 0x61, 0x92,
+	0x3b, 0x93, 0x99, 0xaf, 0x9f, 0xe0, 0xfc, 0x28, 0x8e, 0x17, 0xd0, 0x7c, 0xe8, 0x94, 0x07, 0xae,
-	0xbf, 0xd3, 0x87, 0x57, 0xd2, 0xa9, 0x55, 0x5d, 0x34, 0x27, 0x32, 0xf1, 0xd5, 0x03, 0x9c, 0xfe,
+	0xe4, 0x01, 0xf1, 0x12, 0x16, 0x5f, 0xea, 0x73, 0x5f, 0xd6, 0xad, 0x64, 0x91, 0xc7, 0xd9, 0x9a,
-	0x1b, 0xc7, 0x73, 0x58, 0xbc, 0xe9, 0x29, 0x67, 0x3a, 0x20, 0x5e, 0xc0, 0xf2, 0x43, 0xbd, 0xef,
+	0x6d, 0x78, 0xfe, 0xea, 0xc3, 0x6f, 0x00, 0x00, 0x00, 0xff, 0xff, 0xd6, 0x63, 0x7b, 0x1b, 0x2a,
-	0x75, 0x0a, 0x54, 0xc9, 0x59, 0xee, 0xd9, 0xa6, 0xd8, 0xf2, 0xf4, 0x31, 0x77, 0xdf, 0x01, 0x00,
+	0x01, 0x00, 0x00,
-	0x00, 0xff, 0xff, 0x06, 0x6e, 0x00, 0x3c, 0x58, 0x01, 0x00, 0x00,
 }

registry/gossip/proto/gossip.proto

@@ -4,16 +4,12 @@ package gossip;
 
 // Update is the message broadcast
 message Update {
-	// unique id of update
-	string id = 1;
-	// unix nano timestamp of update
-	uint64 timestamp = 2;
 	// time to live for entry
-	uint64 expires = 3;
+	uint64 expires = 1;
-	// type of update; service
+	// type of update
-	string type = 4;
+	int32 type = 2;
-	// what action is taken; add, del, put
+	// what action is taken
-	string action = 5;
+	int32 action = 3;
 	// any other associated metadata about the data
 	map<string, string> metadata = 6;
 	// the payload data;