ap.go

@@ -4,7 +4,6 @@ import (
 	"context"
 	"git.hpds.cc/Component/network"
 	"git.hpds.cc/Component/network/frame"
-	"git.hpds.cc/Component/network/log"
 )
 
 const (
@@ -18,17 +17,15 @@ type AccessPoint interface {
 	// Connect to HPDS-Mq.
 	Connect() error
 	// SetDataTag will set the tag of data when invoking Write().
-	SetDataTag(tag frame.Tag)
+	SetDataTag(tag uint8)
 	// Write the data to downstream.
 	Write(p []byte) (n int, err error)
 	// WriteWithTag will write data with specified tag, default transactionId is epoch time.
-	WriteWithTag(tag frame.Tag, data []byte) error
+	WriteWithTag(tag uint8, data []byte) error
 	// SetErrorHandler set the error handler function when server error occurs
 	SetErrorHandler(fn func(err error))
 	// SetReceiveHandler [Experimental] set to observe handler function
-	SetReceiveHandler(fn func(tag frame.Tag, data []byte))
+	SetReceiveHandler(fn func(tag byte, data []byte))
-	// Broadcast the data to all downstream
-	Broadcast(data []byte) error
 }
 
 // hpds-AccessPoint
@@ -36,8 +33,8 @@ type accessPoint struct {
 	name       string
 	mqEndpoint string
 	client     *network.Client
-	tag        frame.Tag
+	tag        uint8
-	fn         func(frame.Tag, []byte)
+	fn         func(byte, []byte)
 }
 
 var _ AccessPoint = &accessPoint{}
@@ -45,7 +42,7 @@ var _ AccessPoint = &accessPoint{}
 // NewAccessPoint create a hpds-AccessPoint
 func NewAccessPoint(name string, opts ...Option) AccessPoint {
 	options := NewOptions(opts...)
-	client := network.NewClient(name, network.ClientTypeSource, options.ClientOptions...)
+	client := network.NewClient(name, network.ClientTypeProtocolGateway, options.ClientOptions...)
 
 	return &accessPoint{
 		name:       name,
@@ -56,25 +53,21 @@ func NewAccessPoint(name string, opts ...Option) AccessPoint {
 
 // Write the data to downstream.
 func (s *accessPoint) Write(data []byte) (int, error) {
-	err := s.WriteWithTag(s.tag, data)
+	return len(data), s.WriteWithTag(s.tag, data)
-	if err != nil {
-		return 0, err
-	}
-	return len(data), nil
 }
 
 // SetDataTag will set the tag of data when invoking Write().
-func (s *accessPoint) SetDataTag(tag frame.Tag) {
+func (s *accessPoint) SetDataTag(tag uint8) {
 	s.tag = tag
 }
 
-// Close will close the connection to MessageQueue.
+// Close will close the connection to YoMo-MessageQueue.
 func (s *accessPoint) Close() error {
 	if err := s.client.Close(); err != nil {
-		log.Errorf("%s Close(): %v", apLogPrefix, err)
+		s.client.Logger().Errorf("%sClose(): %v", apLogPrefix, err)
 		return err
 	}
-	log.Debugf("%s is closed", apLogPrefix)
+	s.client.Logger().Debugf("%s is closed", apLogPrefix)
 	return nil
 }
 
@@ -89,18 +82,18 @@ func (s *accessPoint) Connect() error {
 
 	err := s.client.Connect(context.Background(), s.mqEndpoint)
 	if err != nil {
-		log.Errorf("%s Connect() error: %s", apLogPrefix, err)
+		s.client.Logger().Errorf("%sConnect() error: %s", apLogPrefix, err)
 	}
 	return err
 }
 
 // WriteWithTag will write data with specified tag, default transactionID is epoch time.
-func (s *accessPoint) WriteWithTag(tag frame.Tag, data []byte) error {
+func (s *accessPoint) WriteWithTag(tag uint8, data []byte) error {
 	f := frame.NewDataFrame()
-	f.SetCarriage(tag, data)
+	f.SetCarriage(byte(tag), data)
 	f.SetSourceId(s.client.ClientId())
-	log.Debugf("%s WriteWithTag: tid=%s, source_id=%s, data[%d]",
+	s.client.Logger().Debugf("%sWriteWithTag: tid=%s, source_id=%s, data[%d]=%# x",
-		apLogPrefix, f.TransactionId(), f.SourceId(), len(data))
+		apLogPrefix, f.TransactionId(), f.SourceId(), len(data), frame.Shortly(data))
 	return s.client.WriteFrame(f)
 }
 
@@ -110,17 +103,7 @@ func (s *accessPoint) SetErrorHandler(fn func(err error)) {
 }
 
 // SetReceiveHandler [Experimental] set to observe handler function
-func (s *accessPoint) SetReceiveHandler(fn func(frame.Tag, []byte)) {
+func (s *accessPoint) SetReceiveHandler(fn func(byte, []byte)) {
 	s.fn = fn
-	log.Debugf("%s SetReceiveHandler(%v)", apLogPrefix, s.fn)
+	s.client.Logger().Debugf("%sSetReceiveHandler(%v)", apLogPrefix, s.fn)
-}
-
-// Broadcast Write the data to all downstream
-func (s *accessPoint) Broadcast(data []byte) error {
-	f := frame.NewDataFrame()
-	f.SetCarriage(s.tag, data)
-	f.SetSourceId(s.client.ClientId())
-	f.SetBroadcast(true)
-	log.Debugf("Broadcast", "data_frame", f.String())
-	return s.client.WriteFrame(f)
 }

ap_test.go

@@ -7,9 +7,7 @@ import (
 
 func TestAccessPointSendDataToServer(t *testing.T) {
 	ap := NewAccessPoint("test-ap")
-	defer func() {
+	defer ap.Close()
-		_ = ap.Close()
-	}()
 
 	// connect to server
 	err := ap.Connect()

example/multi-mq/mq1/main.go

@@ -11,13 +11,11 @@ func main() {
 	if err != nil {
 		panic(err)
 	}
-	mq.InitOptions(hpds_node.WithAuth("token", "06d36c6f5705507dae778fdce90d0767"))
+	mq.InitOptions(hpds_node.WithAuth("token", "z1"))
-	defer func(mq hpds_node.MessageQueue) {
+	defer mq.Close()
-		_ = mq.Close()
-	}(mq)
 
 	// add Downstream mq
-	_ = mq.AddDownstreamMq(hpds_node.NewDownstreamMq(
+	mq.AddDownstreamMq(hpds_node.NewDownstreamMq(
 		"mq-2",
 		hpds_node.WithMqAddr("localhost:27187"),
 		hpds_node.WithCredential("token:z2"),

example/multi-mq/mq1/mq_1.yaml

@@ -1,6 +1,5 @@
 name: mq-1
 host: 0.0.0.0
-port: 27187
+port: 27188
 functions:
   - name: echo-sf
-  - name: capture-agent

example/multi-mq/mq2/main.go

@@ -9,18 +9,12 @@ import (
 func main() {
 	mq := hpds_node.NewMqWithOptions(
 		"mq-2",
-		hpds_node.WithMqAddr("localhost:27188"),
+		hpds_node.WithMqAddr("localhost:27187"),
-		hpds_node.WithAuth("token", "06d36c6f5705507dae778fdce90d0767"),
+		hpds_node.WithAuth("token", "z2"),
 	)
-	defer func(mq hpds_node.MessageQueue) {
+	defer mq.Close()
-		_ = mq.Close()
-	}(mq)
 
-	err := mq.ConfigWorkflow("mq_2.yaml")
+	mq.ConfigWorkflow("mq_2.yaml")
-	if err != nil {
-		log.Errorf("Server load workflow error! %s", err)
-		return
-	}
 
 	// start mq service
 	log.Printf("Server has started!, pid: %d", os.Getpid())

example/multi-mq/mq2/mq_2.yaml

@@ -3,4 +3,3 @@ host: 0.0.0.0
 port: 27188
 functions:
   - name: echo-sf
-  - name: capture-agent

example/multi-mq/sf/main.go

@@ -8,22 +8,18 @@ import (
 
 func main() {
 	sf := hpds_node.NewStreamFunction(
-		"hpds-ap",
+		"echo-sf",
-		hpds_node.WithMqAddr("localhost:27188"),
+		hpds_node.WithMqAddr("localhost:27187"),
 		hpds_node.WithObserveDataTags(0x33),
 		hpds_node.WithCredential("token:z2"),
 	)
-	defer func(sf hpds_node.StreamFunction) {
+	defer sf.Close()
-		_ = sf.Close()
-	}(sf)
 
 	// set handler
-	err := sf.SetHandler(handler)
+	sf.SetHandler(handler)
-	if err != nil {
+
-		log.Fatalf("[sf] handler err=%v", err)
-	}
 	// start
-	err = sf.Connect()
+	err := sf.Connect()
 	if err != nil {
 		log.Fatalf("[sf] connect err=%v", err)
 		os.Exit(1)

example/multi-mq/stream_process_ca/main.go

@@ -1,35 +0,0 @@
-package main
-
-import (
-	"git.hpds.cc/pavement/hpds_node"
-	"log"
-	"os"
-)
-
-func main() {
-	sf := hpds_node.NewStreamFunction(
-		"capture-agent",
-		hpds_node.WithMqAddr("localhost:27187"),
-		hpds_node.WithObserveDataTags(18),
-		hpds_node.WithCredential("06d36c6f5705507dae778fdce90d0767"),
-	)
-	defer sf.Close()
-
-	// set handler
-	sf.SetHandler(handler)
-
-	// start
-	err := sf.Connect()
-	if err != nil {
-		log.Fatalf("[sf] connect err=%v", err)
-		os.Exit(1)
-	}
-
-	select {}
-}
-
-func handler(data []byte) (byte, []byte) {
-	val := string(data)
-	log.Printf(">> [streamFunction] got tag=0x12, data=%s", val)
-	return 0x0, nil
-}

go.mod

@@ -3,9 +3,9 @@ module git.hpds.cc/pavement/hpds_node
 go 1.19
 
 require (
-	git.hpds.cc/Component/network v0.0.0-20230421024959-bf7300c92a95
+	git.hpds.cc/Component/network v0.0.0-20221012021659-2433c68452d5
 	github.com/disintegration/imaging v1.6.2
-	github.com/quic-go/quic-go v0.33.0
+	github.com/lucas-clemente/quic-go v0.29.1
 	github.com/stretchr/testify v1.8.0
 	github.com/u2takey/ffmpeg-go v0.4.1
 	gopkg.in/yaml.v3 v3.0.1
@@ -15,31 +15,30 @@ require (
 	git.hpds.cc/Component/mq_coder v0.0.0-20221010064749-174ae7ae3340 // indirect
 	github.com/aws/aws-sdk-go v1.38.20 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/fsnotify/fsnotify v1.4.9 // indirect
 	github.com/go-task/slim-sprig v0.0.0-20210107165309-348f09dbbbc0 // indirect
 	github.com/golang/mock v1.6.0 // indirect
-	github.com/google/pprof v0.0.0-20210407192527-94a9f03dee38 // indirect
 	github.com/jmespath/go-jmespath v0.4.0 // indirect
 	github.com/kr/text v0.2.0 // indirect
+	github.com/marten-seemann/qtls-go1-18 v0.1.2 // indirect
+	github.com/marten-seemann/qtls-go1-19 v0.1.0 // indirect
 	github.com/matoous/go-nanoid/v2 v2.0.0 // indirect
-	github.com/onsi/ginkgo/v2 v2.2.0 // indirect
+	github.com/nxadm/tail v1.4.8 // indirect
+	github.com/onsi/ginkgo v1.16.4 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
-	github.com/quic-go/qtls-go1-19 v0.2.1 // indirect
-	github.com/quic-go/qtls-go1-20 v0.1.1 // indirect
 	github.com/rogpeppe/go-internal v1.9.0 // indirect
 	github.com/u2takey/go-utils v0.3.1 // indirect
 	go.uber.org/atomic v1.7.0 // indirect
 	go.uber.org/multierr v1.6.0 // indirect
 	go.uber.org/zap v1.23.0 // indirect
-	golang.org/x/crypto v0.4.0 // indirect
+	golang.org/x/crypto v0.0.0-20210921155107-089bfa567519 // indirect
-	golang.org/x/exp v0.0.0-20221205204356-47842c84f3db // indirect
+	golang.org/x/exp v0.0.0-20220722155223-a9213eeb770e // indirect
-	golang.org/x/image v0.1.0 // indirect
+	golang.org/x/image v0.0.0-20191009234506-e7c1f5e7dbb8 // indirect
-	golang.org/x/mod v0.6.0 // indirect
+	golang.org/x/mod v0.6.0-dev.0.20220106191415-9b9b3d81d5e3 // indirect
-	golang.org/x/net v0.5.0 // indirect
+	golang.org/x/net v0.0.0-20220624214902-1bab6f366d9e // indirect
-	golang.org/x/sys v0.4.0 // indirect
+	golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a // indirect
-	golang.org/x/tools v0.2.0 // indirect
+	golang.org/x/tools v0.1.10 // indirect
+	golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 // indirect
 	gopkg.in/natefinch/lumberjack.v2 v2.0.0 // indirect
+	gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 // indirect
 )
-
-//replace (
-//	git.hpds.cc/Component/network => ../network
-//)

metadata.go

@@ -0,0 +1,30 @@
+package hpds_node
+
+import (
+	"git.hpds.cc/Component/network"
+	"git.hpds.cc/Component/network/frame"
+)
+
+type metadata struct{}
+
+func (m *metadata) Encode() []byte {
+	return nil
+}
+
+type metadataBuilder struct {
+	m *metadata
+}
+
+func newMetadataBuilder() network.MetadataBuilder {
+	return &metadataBuilder{
+		m: &metadata{},
+	}
+}
+
+func (builder *metadataBuilder) Build(f *frame.HandshakeFrame) (network.Metadata, error) {
+	return builder.m, nil
+}
+
+func (builder *metadataBuilder) Decode(buf []byte) (network.Metadata, error) {
+	return builder.m, nil
+}

mq.go

@@ -4,8 +4,6 @@ import (
 	"context"
 	"encoding/json"
 	"fmt"
-	"git.hpds.cc/Component/network/metadata"
-	"git.hpds.cc/Component/network/router"
 	"net/http"
 
 	"git.hpds.cc/Component/network"
@@ -70,35 +68,35 @@ var _ MessageQueue = &messageQueue{}
 // NewMqWithOptions create a messageQueue instance.
 func NewMqWithOptions(name string, opts ...Option) MessageQueue {
 	options := NewOptions(opts...)
-	emitter := createMessageQueueServer(name, options, nil)
+	zipper := createMessageQueueServer(name, options, nil)
-	_ = emitter.ConfigMesh(options.MeshConfigURL)
+	zipper.ConfigMesh(options.MeshConfigURL)
 
-	return emitter
+	return zipper
 }
 
 // NewMq create a messageQueue instance from config files.
 func NewMq(conf string) (MessageQueue, error) {
-	confWf, err := config.ParseWorkflowConfig(conf)
+	config, err := config.ParseWorkflowConfig(conf)
 	if err != nil {
 		log.Errorf("%s[ERR] %v", mqLogPrefix, err)
 		return nil, err
 	}
 	// listening address
-	listenAddr := fmt.Sprintf("%s:%d", confWf.Host, confWf.Port)
+	listenAddr := fmt.Sprintf("%s:%d", config.Host, config.Port)
 
 	options := NewOptions()
 	options.MqAddr = listenAddr
-	emitter := createMessageQueueServer(confWf.Name, options, confWf)
+	zipper := createMessageQueueServer(config.Name, options, config)
 	// messageQueue workflow
-	err = emitter.configWorkflow(confWf)
+	err = zipper.configWorkflow(config)
 
-	return emitter, err
+	return zipper, err
 }
 
 // NewDownstreamMq create a messageQueue descriptor for downstream messageQueue.
 func NewDownstreamMq(name string, opts ...Option) MessageQueue {
 	options := NewOptions(opts...)
-	client := network.NewClient(name, network.ClientTypeUpstreamEmitter, options.ClientOptions...)
+	client := network.NewClient(name, network.ClientTypeMessageQueue, options.ClientOptions...)
 
 	return &messageQueue{
 		name:   name,
@@ -122,9 +120,6 @@ func createMessageQueueServer(name string, options *Options, cfg *config.Workflo
 	z.init()
 	return z
 }
-func (z *messageQueue) Logger() log.Logger {
-	return log.Default()
-}
 
 // ConfigWorkflow will read workflows from config files and register them to messageQueue.
 func (z *messageQueue) ConfigWorkflow(conf string) error {
@@ -139,12 +134,8 @@ func (z *messageQueue) ConfigWorkflow(conf string) error {
 
 func (z *messageQueue) configWorkflow(config *config.WorkflowConfig) error {
 	z.wfc = config
-	z.server.ConfigMetadataBuilder(metadata.DefaultBuilder())
+	z.server.ConfigMetadataBuilder(newMetadataBuilder())
-	funcList := make([]string, len(config.Functions))
+	z.server.ConfigRouter(newRouter(config.Functions))
-	for k, v := range config.Functions {
-		funcList[k] = v.Name
-	}
-	z.server.ConfigRouter(router.Default(funcList))
 	return nil
 }
 
@@ -159,9 +150,7 @@ func (z *messageQueue) ConfigMesh(url string) error {
 	if err != nil {
 		return err
 	}
-	defer func() {
+	defer res.Body.Close()
-		_ = res.Body.Close()
-	}()
 
 	decoder := json.NewDecoder(res.Body)
 	var configs []config.MeshMessageQueue
@@ -197,11 +186,11 @@ func (z *messageQueue) ListenAndServe() error {
 	log.Debugf("%sCreating MessageQueue Server ...", mqLogPrefix)
 	// check downstream zippers
 	for _, ds := range z.downstreamMqs {
-		if dsEmitter, ok := ds.(*messageQueue); ok {
+		if dsZipper, ok := ds.(*messageQueue); ok {
-			go func(dsEmitter *messageQueue) {
+			go func(dsZipper *messageQueue) {
-				_ = dsEmitter.client.Connect(context.Background(), dsEmitter.addr)
+				_ = dsZipper.client.Connect(context.Background(), dsZipper.addr)
-				z.server.AddDownstreamServer(dsEmitter.addr, dsEmitter.client)
+				z.server.AddDownstreamServer(dsZipper.addr, dsZipper.client)
-			}(dsEmitter)
+			}(dsZipper)
 		}
 	}
 	return z.server.ListenAndServe(context.Background(), z.addr)
@@ -262,7 +251,7 @@ func (z *messageQueue) Stats() int {
 
 	log.Printf("[%s] all downstream mq connected: %d", z.name, len(z.server.DownStreams()))
 	for k, v := range z.server.DownStreams() {
-		log.Printf("[%s] |> [%s] %v", z.name, k, v)
+		log.Printf("[%s] |> [%s] %s", z.name, k, v.ServerAddr())
 	}
 
 	log.Printf("[%s] total DataFrames received: %d", z.name, z.server.StatsCounter())

mq_notwindows.go

@@ -21,19 +21,18 @@ func (z *messageQueue) init() {
 	go func() {
 		c := make(chan os.Signal, 1)
 		signal.Notify(c, syscall.SIGTERM, syscall.SIGUSR2, syscall.SIGUSR1, syscall.SIGINT)
-		log.Infof("%sListening SIGUSR1, SIGUSR2, SIGTERM/SIGINT...", mqLogPrefix)
+		log.Printf("%sListening SIGUSR1, SIGUSR2, SIGTERM/SIGINT...", mqLogPrefix)
 		for p1 := range c {
-			log.Infof("Received signal: %s", p1)
+			log.Printf("Received signal: %s", p1)
 			if p1 == syscall.SIGTERM || p1 == syscall.SIGINT {
-				log.Infof("graceful shutting down ... %s", p1)
+				log.Printf("graceful shutting down ... %s", p1)
-				_ = z.Close()
 				os.Exit(0)
 			} else if p1 == syscall.SIGUSR2 {
 				var m runtime.MemStats
 				runtime.ReadMemStats(&m)
 				fmt.Printf("\tNumGC = %v\n", m.NumGC)
 			} else if p1 == syscall.SIGUSR1 {
-				log.Infof("print MessageQueue stats(): %d", z.Stats())
+				log.Printf("print MessageQueue stats(): %d", z.Stats())
 			}
 		}
 	}()

mq_windows.go

@@ -13,11 +13,11 @@ func (z *messageQueue) init() {
 	go func() {
 		c := make(chan os.Signal, 1)
 		signal.Notify(c, syscall.SIGTERM, syscall.SIGINT)
-		log.Infof("%s Listening SIGTERM/SIGINT...", mqLogPrefix)
+		log.Printf("%sListening SIGTERM/SIGINT...", mqLogPrefix)
 		for p1 := range c {
 			log.Printf("Received signal: %s", p1)
 			if p1 == syscall.SIGTERM || p1 == syscall.SIGINT {
-				log.Infof("%s graceful shutting down ... %s", mqLogPrefix, p1)
+				log.Printf("graceful shutting down ... %s", p1)
 				os.Exit(0)
 			}
 		}

options.go

@@ -2,10 +2,10 @@ package hpds_node
 
 import (
 	"crypto/tls"
+	"github.com/lucas-clemente/quic-go"
+
 	"git.hpds.cc/Component/network"
-	"git.hpds.cc/Component/network/frame"
 	"git.hpds.cc/Component/network/log"
-	"github.com/quic-go/quic-go"
 )
 
 const (
@@ -101,7 +101,7 @@ func WithCredential(payload string) Option {
 }
 
 // WithObserveDataTags sets client data tag list.
-func WithObserveDataTags(tags ...frame.Tag) Option {
+func WithObserveDataTags(tags ...byte) Option {
 	return func(o *Options) {
 		o.ClientOptions = append(
 			o.ClientOptions,
@@ -110,6 +110,16 @@ func WithObserveDataTags(tags ...frame.Tag) Option {
 	}
 }
 
+// WithLogger sets the client logger
+func WithLogger(logger log.Logger) Option {
+	return func(o *Options) {
+		o.ClientOptions = append(
+			o.ClientOptions,
+			network.WithLogger(logger),
+		)
+	}
+}
+
 // NewOptions creates a new options for YoMo-Client.
 func NewOptions(opts ...Option) *Options {
 	options := &Options{}

router.go

@@ -0,0 +1,99 @@
+package hpds_node
+
+import (
+	"fmt"
+	"git.hpds.cc/Component/network"
+	"git.hpds.cc/pavement/hpds_node/config"
+	"sync"
+)
+
+type router struct {
+	r *route
+}
+
+func newRouter(functions []config.App) network.Router {
+	return &router{r: newRoute(functions)}
+}
+
+func (r *router) Route(metadata network.Metadata) network.Route {
+	return r.r
+}
+
+func (r *router) Clean() {
+	r.r = nil
+}
+
+type route struct {
+	functions []config.App
+	data      map[byte]map[string]string
+	mu        sync.RWMutex
+}
+
+func newRoute(functions []config.App) *route {
+	return &route{
+		functions: functions,
+		data:      make(map[byte]map[string]string),
+	}
+}
+
+func (r *route) Add(connId string, name string, observeDataTags []byte) (err error) {
+	r.mu.Lock()
+	defer r.mu.Unlock()
+
+	ok := false
+	for _, v := range r.functions {
+		if v.Name == name {
+			ok = true
+			break
+		}
+	}
+	if !ok {
+		return fmt.Errorf("SFN[%s] does not exist in config functions", name)
+	}
+	//去除只能订阅一次的问题
+	//LOOP:
+	//for _, connects := range r.data {
+	//	for connKey, n := range connects {
+	//		if n == name {
+	//			err = hpds_err.NewDuplicateNameError(connKey, fmt.Errorf("node:Stream Function[%s] is already linked to another connection", name))
+	//			delete(connects, connKey)
+	//			break LOOP
+	//		}
+	//	}
+	//}
+
+	for _, tag := range observeDataTags {
+		connects := r.data[tag]
+		if connects == nil {
+			connects = make(map[string]string)
+			r.data[tag] = connects
+		}
+		r.data[tag][connId] = name
+	}
+
+	return err
+}
+
+func (r *route) Remove(connId string) error {
+	r.mu.Lock()
+	defer r.mu.Unlock()
+
+	for _, connects := range r.data {
+		delete(connects, connId)
+	}
+
+	return nil
+}
+
+func (r *route) GetForwardRoutes(tag byte) []string {
+	r.mu.RLock()
+	defer r.mu.RUnlock()
+
+	var keys []string
+	if connects := r.data[tag]; connects != nil {
+		for k := range connects {
+			keys = append(keys, k)
+		}
+	}
+	return keys
+}

stream_func.go

@@ -14,7 +14,7 @@ const (
 type StreamFunction interface {
 	// SetObserveDataTags set the data tag list that will be observed
 	// Deprecated: use hpds.WithObserveDataTags instead
-	SetObserveDataTags(tag ...frame.Tag)
+	SetObserveDataTags(tag ...byte)
 	// SetHandler set the handler function, which accept the raw bytes data and return the tag & response
 	SetHandler(fn network.AsyncHandler) error
 	// SetErrorHandler set the error handler function when server error occurs
@@ -26,7 +26,7 @@ type StreamFunction interface {
 	// Close will close the connection
 	Close() error
 	// Write Send a data to mq.
-	Write(tag frame.Tag, carriage []byte) error
+	Write(tag byte, carriage []byte) error
 }
 
 // NewStreamFunction create a stream function.
@@ -35,9 +35,9 @@ func NewStreamFunction(name string, opts ...Option) StreamFunction {
 	client := network.NewClient(name, network.ClientTypeStreamFunction, options.ClientOptions...)
 	sf := &streamFunction{
 		name:            name,
-		emitterEndpoint: options.MqAddr,
+		zipperEndpoint:  options.MqAddr,
 		client:          client,
-		observeDataTags: make([]frame.Tag, 0),
+		observeDataTags: make([]byte, 0),
 	}
 
 	return sf
@@ -48,9 +48,9 @@ var _ StreamFunction = &streamFunction{}
 // streamFunction implements StreamFunction interface.
 type streamFunction struct {
 	name            string
-	emitterEndpoint string
+	zipperEndpoint  string
 	client          *network.Client
-	observeDataTags []frame.Tag          // tag list that will be observed
+	observeDataTags []byte               // tag list that will be observed
 	fn              network.AsyncHandler // user's function which will be invoked when data arrived
 	pfn             network.PipeHandler
 	pIn             chan []byte
@@ -59,7 +59,7 @@ type streamFunction struct {
 
 // SetObserveDataTags set the data tag list that will be observed.
 // Deprecated: use hpds.WithObserveDataTags instead
-func (s *streamFunction) SetObserveDataTags(tag ...frame.Tag) {
+func (s *streamFunction) SetObserveDataTags(tag ...byte) {
 	s.client.SetObserveDataTags(tag...)
 	s.client.Logger().Debugf("%sSetObserveDataTag(%v)", streamFunctionLogPrefix, s.observeDataTags)
 }
@@ -83,7 +83,7 @@ func (s *streamFunction) Connect() error {
 	s.client.Logger().Debugf("%s Connect()", streamFunctionLogPrefix)
 	// notify underlying network operations, when data with tag we observed arrived, invoke the func
 	s.client.SetDataFrameObserver(func(data *frame.DataFrame) {
-		s.client.Logger().Debugf("%s receive DataFrame, tag=%# x, carriage length=%d", streamFunctionLogPrefix, data.Tag(), len(data.GetCarriage()))
+		s.client.Logger().Debugf("%sreceive DataFrame, tag=%# x, carriage=%# x", streamFunctionLogPrefix, data.Tag(), data.GetCarriage())
 		s.onDataFrame(data.GetCarriage(), data.GetMetaFrame())
 	})
 
@@ -102,16 +102,16 @@ func (s *streamFunction) Connect() error {
 				data := <-s.pOut
 				if data != nil {
 					s.client.Logger().Debugf("%spipe fn send: tag=%#x, data=%# x", streamFunctionLogPrefix, data.Tag, data.Carriage)
-					frm := frame.NewDataFrame()
+					frame := frame.NewDataFrame()
-					// todo: frm.SetTransactionId
+					// todo: frame.SetTransactionId
-					frm.SetCarriage(data.Tag, data.Carriage)
+					frame.SetCarriage(data.Tag, data.Carriage)
-					_ = s.client.WriteFrame(frm)
+					s.client.WriteFrame(frame)
 				}
 			}
 		}()
 	}
 
-	err := s.client.Connect(context.Background(), s.emitterEndpoint)
+	err := s.client.Connect(context.Background(), s.zipperEndpoint)
 	if err != nil {
 		s.client.Logger().Errorf("%sConnect() error: %s", streamFunctionLogPrefix, err)
 	}
@@ -144,26 +144,26 @@ func (s *streamFunction) onDataFrame(data []byte, metaFrame *frame.MetaFrame) {
 
 	if s.fn != nil {
 		go func() {
-			s.client.Logger().Debugf("%s execute-start fn: data[%d]", streamFunctionLogPrefix, len(data)) //, frame.Shortly(data)
+			s.client.Logger().Debugf("%sexecute-start fn: data[%d]=%# x", streamFunctionLogPrefix, len(data), frame.Shortly(data))
 			// invoke serverless
 			tag, resp := s.fn(data)
-			s.client.Logger().Debugf("%s execute-done fn: tag=%#x, resp[%d]", streamFunctionLogPrefix, tag, len(resp))
+			s.client.Logger().Debugf("%sexecute-done fn: tag=%#x, resp[%d]=%# x", streamFunctionLogPrefix, tag, len(resp), frame.Shortly(resp))
 			// if resp is not nil, means the user's function has returned something, we should send it to the mq
 			if len(resp) != 0 {
-				s.client.Logger().Debugf("%s start WriteFrame(): tag=%#x, data[%d]", streamFunctionLogPrefix, tag, len(resp))
+				s.client.Logger().Debugf("%sstart WriteFrame(): tag=%#x, data[%d]=%# x", streamFunctionLogPrefix, tag, len(resp), frame.Shortly(resp))
 				// build a DataFrame
 				// TODO: seems we should implement a DeepCopy() of MetaFrame in the future
-				frm := frame.NewDataFrame()
+				frame := frame.NewDataFrame()
 				// reuse transactionId
-				frm.SetTransactionId(metaFrame.TransactionId())
+				frame.SetTransactionId(metaFrame.TransactionId())
 				// reuse sourceId
-				frm.SetSourceId(metaFrame.SourceId())
+				frame.SetSourceId(metaFrame.SourceId())
-				frm.SetCarriage(tag, resp)
+				frame.SetCarriage(tag, resp)
-				_ = s.client.WriteFrame(frm)
+				s.client.WriteFrame(frame)
 			}
 		}()
 	} else if s.pfn != nil {
-		s.client.Logger().Debugf("%s pipe fn receive: data[%d]", streamFunctionLogPrefix, len(data))
+		s.client.Logger().Debugf("%spipe fn receive: data[%d]=%# x", streamFunctionLogPrefix, len(data), data)
 		s.pIn <- data
 	} else {
 		s.client.Logger().Warnf("%sStreamFunction is nil", streamFunctionLogPrefix)
@@ -171,7 +171,7 @@ func (s *streamFunction) onDataFrame(data []byte, metaFrame *frame.MetaFrame) {
 }
 
 // Send a DataFrame to mq.
-func (s *streamFunction) Write(tag frame.Tag, carriage []byte) error {
+func (s *streamFunction) Write(tag byte, carriage []byte) error {
 	fm := frame.NewDataFrame()
 	fm.SetCarriage(tag, carriage)
 	return s.client.WriteFrame(fm)