Bump google.golang.org/protobuf from 1.30.0 to 1.33.0 (#196)

Bumps google.golang.org/protobuf from 1.30.0 to 1.33.0.

---
updated-dependencies:
- dependency-name: google.golang.org/protobuf
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/go.yml

@@ -0,0 +1,28 @@
+# This workflow will build a golang project
+# For more information see: https://docs.github.com/en/actions/automating-builds-and-tests/building-and-testing-go
+
+name: Go
+
+on:
+  push:
+    branches: [ "master" ]
+  pull_request:
+    branches: [ "master" ]
+
+jobs:
+
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+
+    - name: Set up Go
+      uses: actions/setup-go@v3
+      with:
+        go-version: 1.21
+
+    - name: Build
+      run: go build -v ./...
+
+    - name: Test
+      run: go test -v ./...

.github/workflows/macos.yml

@@ -0,0 +1,18 @@
+name: MacOS build
+
+on: [push, pull_request]
+
+jobs:
+
+  build:
+    runs-on: macos-latest
+    steps:
+    - uses: actions/checkout@v2
+
+    - name: Set up Go
+      uses: actions/setup-go@v2
+      with:
+        go-version: 1.21
+
+    - name: Build
+      run: go build -v ./...

.github/workflows/ubuntu.yml

@@ -0,0 +1,18 @@
+name: Ubuntu build
+
+on: [push, pull_request]
+
+jobs:
+    
+    build:
+      runs-on: ubuntu-latest
+      steps:
+      - uses: actions/checkout@v2
+
+      - name: Set up Go
+        uses: actions/setup-go@v2
+        with:
+          go-version: 1.21
+
+      - name: Build
+        run: go build -v ./...

.github/workflows/windows.yml

@@ -0,0 +1,18 @@
+name: Windows build
+
+on: [push, pull_request]
+
+jobs:
+    
+    build:
+      runs-on: windows-latest
+      steps:
+      - uses: actions/checkout@v2
+
+      - name: Set up Go
+        uses: actions/setup-go@v2
+        with:
+          go-version: 1.21
+
+      - name: Build
+        run: go build -v ./...

.gitignore

@@ -1,4 +1,13 @@
 hmq
 log
 log/*
-*.test
+*.test
+# ide
+.idea
+.vscode/settings.json
+.pre-commit-config.yaml
+hmq.exe
+*.sw*
+*.swo
+*.swp
+*.swn

Dockerfile

@@ -1,11 +1,12 @@
-FROM alpine
-COPY hmq /
-COPY ssl /ssl
-COPY conf /conf
+FROM golang:1.18 as builder
+WORKDIR /go/src/github.com/fhmq/hmq
+COPY . .
+RUN CGO_ENABLED=0 go build -o hmq -a -ldflags '-extldflags "-static"' .
 
+
+FROM alpine:3.17.3
+WORKDIR /
+COPY --from=builder /go/src/github.com/fhmq/hmq/hmq .
 EXPOSE 1883
-EXPOSE 1888
-EXPOSE 8883
-EXPOSE 1993
 
-CMD ["/hmq"]
+ENTRYPOINT ["/hmq"]

README.md

@@ -1,3 +1,4 @@
+
 Free and High Performance MQTT Broker 
 ============
 
@@ -5,8 +6,6 @@ Free and High Performance MQTT Broker
 Golang MQTT Broker, Version 3.1.1, and Compatible
 for [eclipse paho client](https://github.com/eclipse?utf8=%E2%9C%93&q=mqtt&type=&language=) and mosquitto-client
 
-Download: [click here](https://github.com/fhmq/hmq/releases)
-
 ## RUNNING
 ```bash
 $ go get github.com/fhmq/hmq
@@ -60,8 +59,10 @@ Common Options:
 		"certFile": "tls/server/cert.pem",
 		"keyFile": "tls/server/key.pem"
 	},
-	"acl":true,
-	"aclConf":"conf/acl.conf"
+	"plugins": {
+		"auth": "authhttp",
+		"bridge": "kafka"
+	}
 }
 ~~~
 
@@ -81,7 +82,24 @@ Common Options:
 
 * TLS/SSL Support
 
-* Flexible  ACL
+* Auth Support
+	* Auth Connect
+	* Auth ACL
+	* Cache Support
+
+* Kafka Bridge Support
+	* Action Deliver
+	* Regexp Deliver
+
+* HTTP API
+	* Disconnect Connect (future more)
+
+### Share SUBSCRIBE
+~~~
+| Prefix              | Examples                                  | Publish                      |
+| ------------------- |-------------------------------------------|--------------------------- --|
+| $share/<group>/topic  | mosquitto_sub -t ‘$share/<group>/topic’ | mosquitto_pub -t ‘topic’     |
+~~~
 
 ### Cluster
 ```bash
@@ -92,58 +110,7 @@ Common Options:
  2, config router in hmq.config  ("router": "127.0.0.1:9888")
  
 ```
-
-### ACL Configure
-#### The ACL rules define:
-~~~
-Allow | type | value | pubsub | Topics
-~~~
-#### ACL Config
-~~~
-## type clientid , username, ipaddr
-##pub 1 ,  sub 2,  pubsub 3
-## %c is clientid , %u is username
-allow      ip          127.0.0.1   2     $SYS/#
-allow      clientid    0001        3     #
-allow      username    admin       3     #
-allow      username    joy         3     /test,hello/world 
-allow      clientid    *           1     toCloud/%c
-allow      username    *           1     toCloud/%u
-deny       clientid    *           3     #
-~~~
-
-~~~
-#allow local sub $SYS topic
-allow      ip          127.0.0.1   2    $SYS/#
-~~~
-~~~
-#allow client who's id with 0001 or username with admin pub sub all topic
-allow      clientid    0001        3        #
-allow      username    admin       3        #
-~~~
-~~~
-#allow client with the username joy can pub sub topic '/test' and 'hello/world'
-allow      username    joy         3     /test,hello/world 
-~~~
-~~~
-#allow all client pub the topic toCloud/{clientid/username}
-allow      clientid    *         1         toCloud/%c
-allow      username    *         1         toCloud/%u
-~~~
-~~~
-#deny all client pub sub all topic
-deny       clientid    *         3           #
-~~~
-Client match acl rule one by one
-~~~
-          ---------              ---------              ---------
-Client -> | Rule1 | --nomatch--> | Rule2 | --nomatch--> | Rule3 | --> 
-          ---------              ---------              ---------
-              |                      |                      |
-            match                  match                  match
-             \|/                    \|/                    \|/
-        allow | deny           allow | deny           allow | deny
-~~~
+Other Version Of Cluster Based On gRPC: [click here](https://github.com/fhmq/rhmq)
 
 ### Online/Offline Notification
 ```bash
@@ -169,4 +136,9 @@ Client -> | Rule1 | --nomatch--> | Rule2 | --nomatch--> | Rule3 | -->
 
 ## Reference
 
-* Surgermq.(https://github.com/surgemq/surgemq)
+* Surgermq.(https://github.com/zentures/surgemq)
+
+## Benchmark Tool
+
+* https://github.com/inovex/mqtt-stresser
+* https://github.com/krylovsk/mqtt-benchmark

broker/auth.go

@@ -1,81 +1,40 @@
-/* Copyright (c) 2018, joy.zhou <chowyu08@gmail.com>
- */
 package broker
 
 import (
-	"github.com/fhmq/hmq/lib/acl"
-	"github.com/fsnotify/fsnotify"
-	"go.uber.org/zap"
 	"strings"
 )
 
 const (
-	PUB = 1
-	SUB = 2
+	SUB = "1"
+	PUB = "2"
 )
 
-func (c *client) CheckTopicAuth(typ int, topic string) bool {
-	if c.typ != CLIENT || !c.broker.config.Acl {
-		return true
-	}
-	if strings.HasPrefix(topic, "$queue/") {
-		topic = string([]byte(topic)[7:])
-		if topic == "" {
-			return false
+func (b *Broker) CheckTopicAuth(action, clientID, username, ip, topic string) bool {
+	if b.auth != nil {
+		if strings.HasPrefix(topic, "$SYS/broker/connection/clients/") {
+			return true
 		}
+
+		if strings.HasPrefix(topic, "$share/") && action == SUB {
+			substr := groupCompile.FindStringSubmatch(topic)
+			if len(substr) != 3 {
+				return false
+			}
+			topic = substr[2]
+		}
+
+		return b.auth.CheckACL(action, clientID, username, ip, topic)
 	}
-	ip := c.info.remoteIP
-	username := string(c.info.username)
-	clientid := string(c.info.clientID)
-	aclInfo := c.broker.AclConfig
-	return acl.CheckTopicAuth(aclInfo, typ, ip, username, clientid, topic)
+
+	return true
 
 }
 
-var (
-	watchList = []string{"./conf"}
-)
-
-func (b *Broker) handleFsEvent(event fsnotify.Event) error {
-	switch event.Name {
-	case b.config.AclConf:
-		if event.Op&fsnotify.Write == fsnotify.Write ||
-			event.Op&fsnotify.Create == fsnotify.Create {
-			log.Info("text:handling acl config change event:", zap.String("filename", event.Name))
-			aclconfig, err := acl.AclConfigLoad(event.Name)
-			if err != nil {
-				log.Error("aclconfig change failed, load acl conf error: ", zap.Error(err))
-				return err
-			}
-			b.AclConfig = aclconfig
-		}
+func (b *Broker) CheckConnectAuth(clientID, username, password string) bool {
+	if b.auth != nil {
+		return b.auth.CheckConnect(clientID, username, password)
 	}
-	return nil
-}
 
-func (b *Broker) StartAclWatcher() {
-	go func() {
-		wch, e := fsnotify.NewWatcher()
-		if e != nil {
-			log.Error("start monitor acl config file error,", zap.Error(e))
-			return
-		}
-		defer wch.Close()
+	return true
 
-		for _, i := range watchList {
-			if err := wch.Add(i); err != nil {
-				log.Error("start monitor acl config file error,", zap.Error(err))
-				return
-			}
-		}
-		log.Info("watching acl config file change...")
-		for {
-			select {
-			case evt := <-wch.Events:
-				b.handleFsEvent(evt)
-			case err := <-wch.Errors:
-				log.Error("error:", zap.Error(err))
-			}
-		}
-	}()
 }

broker/bridge.go

@@ -0,0 +1,17 @@
+package broker
+
+import (
+	"github.com/fhmq/hmq/plugins/bridge"
+	"go.uber.org/zap"
+)
+
+func (b *Broker) Publish(e *bridge.Elements) bool {
+	if b.bridgeMQ != nil {
+		cost, err := b.bridgeMQ.Publish(e)
+		if err != nil {
+			log.Error("send message to mq error.", zap.Error(err))
+		}
+		return cost
+	}
+	return false
+}

broker/broker.go

@@ -1,25 +1,25 @@
-/* Copyright (c) 2018, joy.zhou <chowyu08@gmail.com>
- */
 package broker
 
 import (
 	"crypto/tls"
+	encJson "encoding/json"
+	"errors"
 	"fmt"
 	"net"
 	"net/http"
-	_ "net/http/pprof"
-	"runtime/debug"
+	"os"
 	"sync"
-	"sync/atomic"
 	"time"
 
-	"github.com/eclipse/paho.mqtt.golang/packets"
-	"github.com/fhmq/hmq/lib/acl"
-	"github.com/fhmq/hmq/lib/sessions"
-	"github.com/fhmq/hmq/lib/topics"
+	"github.com/fhmq/hmq/broker/lib/sessions"
+	"github.com/fhmq/hmq/broker/lib/topics"
+	"github.com/fhmq/hmq/plugins/auth"
+	"github.com/fhmq/hmq/plugins/bridge"
 	"github.com/fhmq/hmq/pool"
-	"github.com/shirou/gopsutil/mem"
+
+	"github.com/eclipse/paho.mqtt.golang/packets"
 	"go.uber.org/zap"
+	"go.uber.org/zap/zapcore"
 	"golang.org/x/net/websocket"
 )
 
@@ -35,21 +35,19 @@ type Message struct {
 
 type Broker struct {
 	id          string
-	cid         uint64
 	mu          sync.Mutex
 	config      *Config
 	tlsConfig   *tls.Config
-	AclConfig   *acl.ACLConfig
 	wpool       *pool.WorkerPool
 	clients     sync.Map
 	routes      sync.Map
 	remotes     sync.Map
 	nodes       map[string]interface{}
 	clusterPool chan *Message
-	queues      map[string]int
 	topicsMgr   *topics.Manager
 	sessionMgr  *sessions.Manager
-	// messagePool []chan *Message
+	auth        auth.Auth
+	bridgeMQ    bridge.BridgeMQ
 }
 
 func newMessagePool() []chan *Message {
@@ -61,13 +59,47 @@ func newMessagePool() []chan *Message {
 	return pool
 }
 
+func getAdditionalLogFields(clientIdentifier string, conn net.Conn, additionalFields ...zapcore.Field) []zapcore.Field {
+	var wsConn *websocket.Conn = nil
+	var wsEnabled bool
+	result := []zapcore.Field{}
+
+	switch conn.(type) {
+	case *websocket.Conn:
+		wsEnabled = true
+		wsConn = conn.(*websocket.Conn)
+	case *net.TCPConn:
+		wsEnabled = false
+	}
+
+	// add optional fields
+	if len(additionalFields) > 0 {
+		result = append(result, additionalFields...)
+	}
+
+	// add client ID
+	result = append(result, zap.String("clientID", clientIdentifier))
+
+	// add remote connection address
+	if !wsEnabled && conn != nil && conn.RemoteAddr() != nil {
+		result = append(result, zap.Stringer("addr", conn.RemoteAddr()))
+	} else if wsEnabled && wsConn != nil && wsConn.Request() != nil {
+		result = append(result, zap.String("addr", wsConn.Request().RemoteAddr))
+	}
+
+	return result
+}
+
 func NewBroker(config *Config) (*Broker, error) {
+	if config == nil {
+		config = DefaultConfig
+	}
+
 	b := &Broker{
 		id:          GenUniqueId(),
 		config:      config,
 		wpool:       pool.New(config.Worker),
 		nodes:       make(map[string]interface{}),
-		queues:      make(map[string]int),
 		clusterPool: make(chan *Message),
 	}
 
@@ -92,19 +124,14 @@ func NewBroker(config *Config) (*Broker, error) {
 		}
 		b.tlsConfig = tlsconfig
 	}
-	if b.config.Acl {
-		aclconfig, err := acl.AclConfigLoad(b.config.AclConf)
-		if err != nil {
-			log.Error("Load acl conf error", zap.Error(err))
-			return nil, err
-		}
-		b.AclConfig = aclconfig
-		b.StartAclWatcher()
-	}
+
+	b.auth = b.config.Plugin.Auth
+	b.bridgeMQ = b.config.Plugin.Bridge
+
 	return b, nil
 }
 
-func (b *Broker) SubmitWork(msg *Message) {
+func (b *Broker) SubmitWork(clientId string, msg *Message) {
 	if b.wpool == nil {
 		b.wpool = pool.New(b.config.Worker)
 	}
@@ -112,7 +139,7 @@ func (b *Broker) SubmitWork(msg *Message) {
 	if msg.client.typ == CLUSTER {
 		b.clusterPool <- msg
 	} else {
-		b.wpool.Submit(func() {
+		b.wpool.Submit(clientId, func() {
 			ProcessMessage(msg)
 		})
 	}
@@ -125,11 +152,20 @@ func (b *Broker) Start() {
 		return
 	}
 
-	//listen clinet over tcp
+	if b.config.HTTPPort != "" {
+		go InitHTTPMoniter(b)
+	}
+
+	//listen client over tcp
 	if b.config.Port != "" {
 		go b.StartClientListening(false)
 	}
 
+	//listen client over unix
+	if b.config.Port == "" && b.config.UnixFilePath != "" {
+		go b.StartUnixSocketClientListening(b.config.UnixFilePath, true)
+	}
+
 	//listen for cluster
 	if b.config.Cluster.Port != "" {
 		go b.StartClusterListening()
@@ -151,125 +187,144 @@ func (b *Broker) Start() {
 		b.ConnectToDiscovery()
 	}
 
-	//system monitor
-	go StateMonitor()
-
-	if b.config.Debug {
-		startPProf()
-	}
-
-}
-
-func startPProf() {
-	go func() {
-		http.ListenAndServe(":10060", nil)
-	}()
-}
-
-func StateMonitor() {
-	v, _ := mem.VirtualMemory()
-	timeSticker := time.NewTicker(time.Second * 30)
-	for {
-		select {
-		case <-timeSticker.C:
-			if v.UsedPercent > 75 {
-				debug.FreeOSMemory()
-			}
-		}
-	}
 }
 
 func (b *Broker) StartWebsocketListening() {
 	path := b.config.WsPath
 	hp := ":" + b.config.WsPort
 	log.Info("Start Websocket Listener on:", zap.String("hp", hp), zap.String("path", path))
-	http.Handle(path, websocket.Handler(b.wsHandler))
+	ws := &websocket.Server{Handler: websocket.Handler(b.wsHandler)}
+	mux := http.NewServeMux()
+	mux.Handle(path, ws)
 	var err error
 	if b.config.WsTLS {
-		err = http.ListenAndServeTLS(hp, b.config.TlsInfo.CertFile, b.config.TlsInfo.KeyFile, nil)
+		err = http.ListenAndServeTLS(hp, b.config.TlsInfo.CertFile, b.config.TlsInfo.KeyFile, mux)
 	} else {
-		err = http.ListenAndServe(hp, nil)
+		err = http.ListenAndServe(hp, mux)
 	}
 	if err != nil {
-		log.Error("ListenAndServe:" + err.Error())
+		log.Error("ListenAndServe" + err.Error())
 		return
 	}
 }
 
 func (b *Broker) wsHandler(ws *websocket.Conn) {
 	// io.Copy(ws, ws)
-	atomic.AddUint64(&b.cid, 1)
 	ws.PayloadType = websocket.BinaryFrame
-	b.handleConnection(CLIENT, ws)
+	err := b.handleConnection(CLIENT, ws)
+	if err != nil {
+		ws.Close()
+	}
 }
 
 func (b *Broker) StartClientListening(Tls bool) {
-	var hp string
 	var err error
 	var l net.Listener
-	if Tls {
-		hp = b.config.TlsHost + ":" + b.config.TlsPort
-		l, err = tls.Listen("tcp", hp, b.tlsConfig)
-		log.Info("Start TLS Listening client on ", zap.String("hp", hp))
-	} else {
-		hp := b.config.Host + ":" + b.config.Port
-		l, err = net.Listen("tcp", hp)
-		log.Info("Start Listening client on ", zap.String("hp", hp))
-	}
-	if err != nil {
+	// Retry listening indefinitely so that specifying IP addresses
+	// (e.g. --host=10.0.0.217) starts working once the IP address is actually
+	// configured on the interface.
+	for {
+		if Tls {
+			hp := b.config.TlsHost + ":" + b.config.TlsPort
+			l, err = tls.Listen("tcp", hp, b.tlsConfig)
+			log.Info("Start TLS Listening client on ", zap.String("hp", hp))
+		} else {
+			hp := b.config.Host + ":" + b.config.Port
+			l, err = net.Listen("tcp", hp)
+			log.Info("Start Listening client on ", zap.String("hp", hp))
+		}
+
+		if err == nil {
+			break // successfully listening
+		}
+
 		log.Error("Error listening on ", zap.Error(err))
-		return
+		time.Sleep(1 * time.Second)
 	}
+
 	tmpDelay := 10 * ACCEPT_MIN_SLEEP
 	for {
 		conn, err := l.Accept()
 		if err != nil {
 			if ne, ok := err.(net.Error); ok && ne.Temporary() {
-				log.Error("Temporary Client Accept Error(%v), sleeping %dms",
-					zap.Error(ne), zap.Duration("sleeping", tmpDelay/time.Millisecond))
+				log.Error(
+					"Temporary Client Accept Error(%v), sleeping %dms",
+					zap.Error(ne),
+					zap.Duration("sleeping", tmpDelay/time.Millisecond),
+				)
+
 				time.Sleep(tmpDelay)
 				tmpDelay *= 2
 				if tmpDelay > ACCEPT_MAX_SLEEP {
 					tmpDelay = ACCEPT_MAX_SLEEP
 				}
 			} else {
-				log.Error("Accept error: %v", zap.Error(err))
+				log.Error("Accept error", zap.Error(err))
 			}
 			continue
 		}
+
 		tmpDelay = ACCEPT_MIN_SLEEP
-		atomic.AddUint64(&b.cid, 1)
-		go b.handleConnection(CLIENT, conn)
-
+		go func() {
+			err := b.handleConnection(CLIENT, conn)
+			if err != nil {
+				conn.Close()
+			}
+		}()
 	}
 }
 
-func (b *Broker) Handshake(conn net.Conn) bool {
+func (b *Broker) StartUnixSocketClientListening(socketPath string, UnixSocket bool) {
+	var err error
+	var l net.Listener
+	for {
+		if UnixSocket {
+			if FileExist(socketPath) {
+				if err != nil {
+					log.Error("Remove Unix socketPath ", zap.Error(err))
+				}
+			}
+			conn, _ := net.ResolveUnixAddr("unix", socketPath)
+			l, err = net.ListenUnix("unix", conn)
+			log.Info("Start Listening client on Unix socket", zap.String("socketPath", socketPath))
+		}
+		if err == nil {
+			break // successfully listening
+		}
 
-	nc := tls.Server(conn, b.tlsConfig)
-	time.AfterFunc(DEFAULT_TLS_TIMEOUT, func() { TlsTimeout(nc) })
-	nc.SetReadDeadline(time.Now().Add(DEFAULT_TLS_TIMEOUT))
-
-	// Force handshake
-	if err := nc.Handshake(); err != nil {
-		log.Error("TLS handshake error, ", zap.Error(err))
-		return false
+		log.Error("Error listening on ", zap.Error(err))
+		time.Sleep(1 * time.Second)
 	}
-	nc.SetReadDeadline(time.Time{})
-	return true
 
-}
+	tmpDelay := 10 * ACCEPT_MIN_SLEEP
+	for {
+		conn, err := l.Accept()
+		if err != nil {
+			if ne, ok := err.(net.Error); ok && ne.Temporary() {
+				log.Error(
+					"Temporary Client Accept Error(%v), sleeping %dms",
+					zap.Error(ne),
+					zap.Duration("sleeping", tmpDelay/time.Millisecond),
+				)
 
-func TlsTimeout(conn *tls.Conn) {
-	nc := conn
-	// Check if already closed
-	if nc == nil {
-		return
-	}
-	cs := nc.ConnectionState()
-	if !cs.HandshakeComplete {
-		log.Error("TLS handshake timeout")
-		nc.Close()
+				time.Sleep(tmpDelay)
+				tmpDelay *= 2
+				if tmpDelay > ACCEPT_MAX_SLEEP {
+					tmpDelay = ACCEPT_MAX_SLEEP
+				}
+			} else {
+				log.Error("Accept error", zap.Error(err))
+			}
+			continue
+		}
+
+		tmpDelay = ACCEPT_MIN_SLEEP
+		go func() {
+			err := b.handleConnection(CLIENT, conn)
+			if err != nil {
+				conn.Close()
+			}
+		}()
 	}
 }
 
@@ -279,7 +334,7 @@ func (b *Broker) StartClusterListening() {
 
 	l, e := net.Listen("tcp", hp)
 	if e != nil {
-		log.Error("Error listening on ", zap.Error(e))
+		log.Error("Error listening on", zap.Error(e))
 		return
 	}
 
@@ -288,47 +343,82 @@ func (b *Broker) StartClusterListening() {
 		conn, err := l.Accept()
 		if err != nil {
 			if ne, ok := err.(net.Error); ok && ne.Temporary() {
-				log.Error("Temporary Client Accept Error(%v), sleeping %dms",
-					zap.Error(ne), zap.Duration("sleeping", tmpDelay/time.Millisecond))
+				log.Error(
+					"Temporary Client Accept Error(%v), sleeping %dms",
+					zap.Error(ne),
+					zap.Duration("sleeping", tmpDelay/time.Millisecond),
+				)
+
 				time.Sleep(tmpDelay)
 				tmpDelay *= 2
 				if tmpDelay > ACCEPT_MAX_SLEEP {
 					tmpDelay = ACCEPT_MAX_SLEEP
 				}
 			} else {
-				log.Error("Accept error: %v", zap.Error(err))
+				log.Error("Accept error", zap.Error(err))
 			}
 			continue
 		}
 		tmpDelay = ACCEPT_MIN_SLEEP
 
-		go b.handleConnection(ROUTER, conn)
+		go func() {
+			err := b.handleConnection(ROUTER, conn)
+			if err != nil {
+				conn.Close()
+			}
+		}()
 	}
 }
 
-func (b *Broker) handleConnection(typ int, conn net.Conn) {
+func (b *Broker) DisConnClientByClientId(clientId string) {
+	cli, loaded := b.clients.LoadAndDelete(clientId)
+	if !loaded {
+		return
+	}
+	conn, success := cli.(*client)
+	if !success {
+		return
+	}
+	conn.Close()
+}
+
+func (b *Broker) handleConnection(typ int, conn net.Conn) error {
 	//process connect packet
 	packet, err := packets.ReadPacket(conn)
 	if err != nil {
-		log.Error("read connect packet error: ", zap.Error(err))
-		return
+		return errors.New(fmt.Sprintf("read connect packet error:%v", err))
 	}
 	if packet == nil {
-		log.Error("received nil packet")
-		return
+		return errors.New("received nil packet")
 	}
 	msg, ok := packet.(*packets.ConnectPacket)
 	if !ok {
-		log.Error("received msg that was not Connect")
-		return
+		return errors.New("received msg that was not Connect")
 	}
+
+	log.Info("read connect from ", getAdditionalLogFields(msg.ClientIdentifier, conn)...)
+
 	connack := packets.NewControlPacket(packets.Connack).(*packets.ConnackPacket)
-	connack.ReturnCode = packets.Accepted
 	connack.SessionPresent = msg.CleanSession
-	err = connack.Write(conn)
-	if err != nil {
-		log.Error("send connack error, ", zap.Error(err), zap.String("clientID", msg.ClientIdentifier))
-		return
+	connack.ReturnCode = msg.Validate()
+
+	if connack.ReturnCode != packets.Accepted {
+		if err := connack.Write(conn); err != nil {
+			return fmt.Errorf("send connack error:%v,clientID:%v,conn:%v", err, msg.ClientIdentifier, conn)
+		}
+		return fmt.Errorf("connect packet validate failed with connack.ReturnCode%v", connack.ReturnCode)
+	}
+
+	if typ == CLIENT && !b.CheckConnectAuth(msg.ClientIdentifier, msg.Username, string(msg.Password)) {
+		connack.ReturnCode = packets.ErrRefusedNotAuthorised
+		if err := connack.Write(conn); err != nil {
+			return fmt.Errorf("send connack error:%v,clientID:%v,conn:%v", err, msg.ClientIdentifier, conn)
+		}
+		return fmt.Errorf("connect packet CheckConnectAuth failed with connack.ReturnCode%v", connack.ReturnCode)
+	}
+
+	if err := connack.Write(conn); err != nil {
+		return fmt.Errorf("send connack error:%v,clientID:%v,conn:%v", err, msg.ClientIdentifier, conn)
 	}
 
 	willmsg := packets.NewControlPacket(packets.Publish).(*packets.PublishPacket)
@@ -358,45 +448,62 @@ func (b *Broker) handleConnection(typ int, conn net.Conn) {
 
 	c.init()
 
-	err = b.getSession(c, msg, connack)
-	if err != nil {
-		log.Error("get session error: ", zap.String("clientID", c.info.clientID))
-		return
+	if err := b.getSession(c, msg, connack); err != nil {
+		return fmt.Errorf("get session error:%v,clientID:%v,conn:%v", err, msg.ClientIdentifier, conn)
 	}
 
 	cid := c.info.clientID
 
-	var exist bool
+	var exists bool
 	var old interface{}
 
 	switch typ {
 	case CLIENT:
-		old, exist = b.clients.Load(cid)
-		if exist {
-			log.Warn("client exist, close old...", zap.String("clientID", c.info.clientID))
-			ol, ok := old.(*client)
-			if ok {
+		old, exists = b.clients.Load(cid)
+		if exists {
+			if ol, ok := old.(*client); ok {
+				log.Warn("client exists, close old client", getAdditionalLogFields(ol.info.clientID, ol.conn)...)
 				ol.Close()
 			}
 		}
 		b.clients.Store(cid, c)
 
-		b.OnlineOfflineNotification(cid, true)
+		var pubPack = PubPacket{}
+		if willmsg != nil {
+			pubPack.TopicName = info.willMsg.TopicName
+			pubPack.Payload = info.willMsg.Payload
+		}
+
+		pubInfo := Info{
+			ClientID:  info.clientID,
+			Username:  info.username,
+			Password:  info.password,
+			Keepalive: info.keepalive,
+			WillMsg:   pubPack,
+		}
+
+		b.OnlineOfflineNotification(pubInfo, true, c.lastMsgTime)
+		{
+			b.Publish(&bridge.Elements{
+				ClientID:  msg.ClientIdentifier,
+				Username:  msg.Username,
+				Action:    bridge.Connect,
+				Timestamp: time.Now().Unix(),
+			})
+		}
 	case ROUTER:
-		old, exist = b.routes.Load(cid)
-		if exist {
-			log.Warn("router exist, close old...")
-			ol, ok := old.(*client)
-			if ok {
+		old, exists = b.routes.Load(cid)
+		if exists {
+			if ol, ok := old.(*client); ok {
+				log.Warn("router exists, close old router", getAdditionalLogFields(ol.info.clientID, ol.conn)...)
 				ol.Close()
 			}
 		}
 		b.routes.Store(cid, c)
 	}
 
-	// mpool := b.messagePool[fnv1a.HashString64(cid)%MessagePoolNum]
-
 	c.readLoop()
+	return nil
 }
 
 func (b *Broker) ConnectToDiscovery() {
@@ -406,10 +513,10 @@ func (b *Broker) ConnectToDiscovery() {
 	for {
 		conn, err = net.Dial("tcp", b.config.Router)
 		if err != nil {
-			log.Error("Error trying to connect to route: ", zap.Error(err))
-			log.Debug("Connect to route timeout ,retry...")
+			log.Error("Error trying to connect to route", zap.Error(err))
+			log.Debug("Connect to route timeout, retry...")
 
-			if 0 == tempDelay {
+			if tempDelay == 0 {
 				tempDelay = 1 * time.Second
 			} else {
 				tempDelay *= 2
@@ -423,7 +530,7 @@ func (b *Broker) ConnectToDiscovery() {
 		}
 		break
 	}
-	log.Debug("connect to router success :", zap.String("Router", b.config.Router))
+	log.Debug("connect to router success", zap.String("Router", b.config.Router))
 
 	cid := b.id
 	info := info{
@@ -473,15 +580,15 @@ func (b *Broker) connectRouter(id, addr string) {
 
 		conn, err = net.Dial("tcp", addr)
 		if err != nil {
-			log.Error("Error trying to connect to route: ", zap.Error(err))
+			log.Error("Error trying to connect to route", zap.Error(err))
 
 			if retryTimes > 50 {
 				return
 			}
 
-			log.Debug("Connect to route timeout ,retry...")
+			log.Debug("Connect to route timeout, retry...")
 
-			if 0 == timeDelay {
+			if timeDelay == 0 {
 				timeDelay = 1 * time.Second
 			} else {
 				timeDelay *= 2
@@ -519,7 +626,6 @@ func (b *Broker) connectRouter(id, addr string) {
 
 	c.SendConnect()
 
-	// mpool := b.messagePool[fnv1a.HashString64(cid)%MessagePoolNum]
 	go c.readLoop()
 	go c.StartPing()
 
@@ -548,71 +654,71 @@ func (b *Broker) checkNodeExist(id, url string) bool {
 }
 
 func (b *Broker) CheckRemoteExist(remoteID, url string) bool {
-	exist := false
+	exists := false
 	b.remotes.Range(func(key, value interface{}) bool {
 		v, ok := value.(*client)
 		if ok {
 			if v.route.remoteUrl == url {
 				v.route.remoteID = remoteID
-				exist = true
+				exists = true
 				return false
 			}
 		}
 		return true
 	})
-	return exist
+	return exists
 }
 
 func (b *Broker) SendLocalSubsToRouter(c *client) {
 	subInfo := packets.NewControlPacket(packets.Subscribe).(*packets.SubscribePacket)
 	b.clients.Range(func(key, value interface{}) bool {
 		client, ok := value.(*client)
-		if ok {
-			subs := client.subMap
-			for _, sub := range subs {
-				subInfo.Topics = append(subInfo.Topics, sub.topic)
-				subInfo.Qoss = append(subInfo.Qoss, sub.qos)
-			}
+		if !ok {
+			return true
 		}
+
+		client.subMapMu.RLock()
+		defer client.subMapMu.RUnlock()
+
+		subs := client.subMap
+		for _, sub := range subs {
+			subInfo.Topics = append(subInfo.Topics, sub.topic)
+			subInfo.Qoss = append(subInfo.Qoss, sub.qos)
+		}
+
 		return true
 	})
 	if len(subInfo.Topics) > 0 {
-		err := c.WriterPacket(subInfo)
-		if err != nil {
-			log.Error("Send localsubs To Router error :", zap.Error(err))
+		if err := c.WriterPacket(subInfo); err != nil {
+			log.Error("Send localsubs To Router error", zap.Error(err))
 		}
 	}
 }
 
 func (b *Broker) BroadcastInfoMessage(remoteID string, msg *packets.PublishPacket) {
 	b.routes.Range(func(key, value interface{}) bool {
-		r, ok := value.(*client)
-		if ok {
+		if r, ok := value.(*client); ok {
 			if r.route.remoteID == remoteID {
 				return true
 			}
 			r.WriterPacket(msg)
 		}
 		return true
-
 	})
-	// log.Info("BroadcastInfoMessage success ")
 }
 
 func (b *Broker) BroadcastSubOrUnsubMessage(packet packets.ControlPacket) {
 
 	b.routes.Range(func(key, value interface{}) bool {
-		r, ok := value.(*client)
-		if ok {
+		if r, ok := value.(*client); ok {
 			r.WriterPacket(packet)
 		}
 		return true
 	})
-	// log.Info("BroadcastSubscribeMessage remotes: ", s.remotes)
 }
 
 func (b *Broker) removeClient(c *client) {
-	clientId := string(c.info.clientID)
+	clientId := c.info.clientID
 	typ := c.typ
 	switch typ {
 	case CLIENT:
@@ -622,7 +728,6 @@ func (b *Broker) removeClient(c *client) {
 	case REMOTE:
 		b.remotes.Delete(clientId)
 	}
-	// log.Info("delete client ,", clientId)
 }
 
 func (b *Broker) PublishMessage(packet *packets.PublishPacket) {
@@ -632,38 +737,81 @@ func (b *Broker) PublishMessage(packet *packets.PublishPacket) {
 	err := b.topicsMgr.Subscribers([]byte(packet.TopicName), packet.Qos, &subs, &qoss)
 	b.mu.Unlock()
 	if err != nil {
-		log.Error("search sub client error,  ", zap.Error(err))
+		log.Error("search sub client error", zap.Error(err))
 		return
 	}
 
 	for _, sub := range subs {
 		s, ok := sub.(*subscription)
 		if ok {
-			err := s.client.WriterPacket(packet)
-			if err != nil {
-				log.Error("write message error,  ", zap.Error(err))
+			if err := s.client.WriterPacket(packet); err != nil {
+				log.Error("write message error", zap.Error(err))
 			}
 		}
 	}
 }
 
-func (b *Broker) BroadcastUnSubscribe(subs map[string]*subscription) {
-
-	unsub := packets.NewControlPacket(packets.Unsubscribe).(*packets.UnsubscribePacket)
-	for topic, _ := range subs {
-		unsub.Topics = append(unsub.Topics, topic)
+func (b *Broker) PublishMessageByClientId(packet *packets.PublishPacket, clientId string) error {
+	cli, loaded := b.clients.LoadAndDelete(clientId)
+	if !loaded {
+		return fmt.Errorf("clientId %s not connected", clientId)
 	}
-
-	if len(unsub.Topics) > 0 {
-		b.BroadcastSubOrUnsubMessage(unsub)
+	conn, success := cli.(*client)
+	if !success {
+		return fmt.Errorf("clientId %s loaded fail", clientId)
 	}
+	return conn.WriterPacket(packet)
 }
 
-func (b *Broker) OnlineOfflineNotification(clientID string, online bool) {
+func (b *Broker) BroadcastUnSubscribe(topicsToUnSubscribeFrom []string) {
+	if len(topicsToUnSubscribeFrom) == 0 {
+		return
+	}
+
+	unsub := packets.NewControlPacket(packets.Unsubscribe).(*packets.UnsubscribePacket)
+	unsub.Topics = append(unsub.Topics, topicsToUnSubscribeFrom...)
+	b.BroadcastSubOrUnsubMessage(unsub)
+}
+
+type OnlineOfflineMsg struct {
+	ClientID    string `json:"clientID"`
+	Online      bool   `json:"online"`
+	Timestamp   string `json:"timestamp"`
+	ClientInfo  Info   `json:"info"`
+	LastMsgTime int64  `json:"lastMsg"`
+}
+
+func (b *Broker) OnlineOfflineNotification(info Info, online bool, lastMsg int64) {
 	packet := packets.NewControlPacket(packets.Publish).(*packets.PublishPacket)
-	packet.TopicName = "$SYS/broker/connection/clients/" + clientID
+	packet.TopicName = "$SYS/broker/connection/clients/" + info.ClientID
 	packet.Qos = 0
-	packet.Payload = []byte(fmt.Sprintf(`{"clientID":"%s","online":%v,"timestamp":"%s"}`, clientID, online, time.Now().UTC().Format(time.RFC3339)))
+
+	msg := OnlineOfflineMsg{
+		ClientID:    info.ClientID,
+		Online:      online,
+		Timestamp:   time.Now().UTC().Format(time.RFC3339),
+		ClientInfo:  info,
+		LastMsgTime: lastMsg,
+	}
+
+	if b, err := encJson.Marshal(msg); err != nil {
+		//This is a TERRIBLE situation, falling back to legacy format to not break API Contract
+		packet.Payload = []byte(fmt.Sprintf(`{"clientID":"%s","online":%v,"timestamp":"%s"}`, info.ClientID, online, time.Now().UTC().Format(time.RFC3339)))
+	} else {
+		packet.Payload = b
+	}
 
 	b.PublishMessage(packet)
 }
+
+func FileExist(name string) bool {
+	_, err := os.Stat(name)
+	if err == nil {
+		return true
+	} else if os.IsNotExist(err) {
+		return false
+	} else {
+		panic(err)
+	}
+
+}

broker/client.go

@@ -1,24 +1,29 @@
-/* Copyright (c) 2018, joy.zhou <chowyu08@gmail.com>
- */
 package broker
 
 import (
+	"bytes"
 	"context"
 	"errors"
+	"math/rand"
 	"net"
 	"reflect"
+	"regexp"
 	"strings"
 	"sync"
 	"time"
+	"unicode/utf8"
 
+	"github.com/eapache/queue"
 	"github.com/eclipse/paho.mqtt.golang/packets"
-	"github.com/fhmq/hmq/lib/sessions"
-	"github.com/fhmq/hmq/lib/topics"
+	"github.com/fhmq/hmq/broker/lib/sessions"
+	"github.com/fhmq/hmq/broker/lib/topics"
+	"github.com/fhmq/hmq/plugins/bridge"
 	"go.uber.org/zap"
+	"golang.org/x/net/websocket"
 )
 
 const (
-	// special pub topic for cluster info BrokerInfoTopic
+	// BrokerInfoTopic special pub topic for cluster info
 	BrokerInfoTopic = "broker000100101info"
 	// CLIENT is an end user.
 	CLIENT = 0
@@ -28,34 +33,73 @@ const (
 	REMOTE  = 2
 	CLUSTER = 3
 )
+
+const (
+	_GroupTopicRegexp = `^\$share/([0-9a-zA-Z_-]+)/(.*)$`
+)
+
 const (
 	Connected    = 1
 	Disconnected = 2
 )
 
+const (
+	awaitRelTimeout int64 = 20
+	retryInterval   int64 = 20
+)
+
+var (
+	groupCompile = regexp.MustCompile(_GroupTopicRegexp)
+)
+
 type client struct {
-	typ        int
-	mu         sync.Mutex
-	broker     *Broker
-	conn       net.Conn
-	info       info
-	route      route
-	status     int
-	ctx        context.Context
-	cancelFunc context.CancelFunc
-	session    *sessions.Session
-	subMap     map[string]*subscription
-	topicsMgr  *topics.Manager
-	subs       []interface{}
-	qoss       []byte
-	rmsgs      []*packets.PublishPacket
+	typ            int
+	mu             sync.Mutex
+	broker         *Broker
+	conn           net.Conn
+	info           info
+	route          route
+	status         int
+	ctx            context.Context
+	cancelFunc     context.CancelFunc
+	session        *sessions.Session
+	subMap         map[string]*subscription
+	subMapMu       sync.RWMutex
+	topicsMgr      *topics.Manager
+	subs           []interface{}
+	qoss           []byte
+	rmsgs          []*packets.PublishPacket
+	routeSubMap    map[string]uint64
+	routeSubMapMu  sync.Mutex
+	awaitingRel    map[uint16]int64
+	awaitingRelMu  sync.RWMutex
+	maxAwaitingRel int
+	inflight       map[uint16]*inflightElem
+	inflightMu     sync.RWMutex
+	mqueue         *queue.Queue
+	retryTimer     *time.Timer
+	retryTimerLock sync.Mutex
+	lastMsgTime    int64
 }
 
+type InflightStatus uint8
+
+const (
+	Publish InflightStatus = 0
+	Pubrel  InflightStatus = 1
+)
+
+type inflightElem struct {
+	status    InflightStatus
+	packet    *packets.PublishPacket
+	timestamp int64
+}
 type subscription struct {
-	client *client
-	topic  string
-	qos    byte
-	queue  bool
+	client    *client
+	topic     string
+	qos       byte
+	share     bool
+	groupName string
 }
 
 type info struct {
@@ -68,22 +112,49 @@ type info struct {
 	remoteIP  string
 }
 
+type PubPacket struct {
+	TopicName string `json:"topicName"`
+	Payload   []byte `json:"payload"`
+}
+
+type Info struct {
+	ClientID  string    `json:"clientId"`
+	Username  string    `json:"username"`
+	Password  []byte    `json:"password"`
+	Keepalive uint16    `json:"keepalive"`
+	WillMsg   PubPacket `json:"willMsg"`
+}
+
 type route struct {
 	remoteID  string
 	remoteUrl string
 }
 
 var (
-	DisconnectdPacket = packets.NewControlPacket(packets.Disconnect).(*packets.DisconnectPacket)
+	DisconnectedPacket = packets.NewControlPacket(packets.Disconnect).(*packets.DisconnectPacket)
+	r                  = rand.New(rand.NewSource(time.Now().UnixNano()))
 )
 
 func (c *client) init() {
+	c.lastMsgTime = time.Now().Unix() //mark the connection packet time as last time messaged
 	c.status = Connected
-	c.info.localIP = strings.Split(c.conn.LocalAddr().String(), ":")[0]
-	c.info.remoteIP = strings.Split(c.conn.RemoteAddr().String(), ":")[0]
+	c.info.localIP, _, _ = net.SplitHostPort(c.conn.LocalAddr().String())
+	remoteAddr := c.conn.RemoteAddr()
+	remoteNetwork := remoteAddr.Network()
+	c.info.remoteIP = ""
+	if remoteNetwork != "websocket" {
+		c.info.remoteIP, _, _ = net.SplitHostPort(remoteAddr.String())
+	} else {
+		ws := c.conn.(*websocket.Conn)
+		c.info.remoteIP, _, _ = net.SplitHostPort(ws.Request().RemoteAddr)
+	}
 	c.ctx, c.cancelFunc = context.WithCancel(context.Background())
 	c.subMap = make(map[string]*subscription)
 	c.topicsMgr = c.broker.topicsMgr
+	c.routeSubMap = make(map[string]uint64)
+	c.awaitingRel = make(map[uint16]int64)
+	c.inflight = make(map[uint16]*inflightElem)
+	c.mqueue = queue.New()
 }
 
 func (c *client) readLoop() {
@@ -102,46 +173,186 @@ func (c *client) readLoop() {
 			return
 		default:
 			//add read timeout
-			if err := nc.SetReadDeadline(time.Now().Add(timeOut)); err != nil {
-				log.Error("set read timeout error: ", zap.Error(err), zap.String("ClientID", c.info.clientID))
-				return
+			if keepAlive > 0 {
+				if err := nc.SetReadDeadline(time.Now().Add(timeOut)); err != nil {
+					log.Error("set read timeout error: ", zap.Error(err), zap.String("ClientID", c.info.clientID))
+					msg := &Message{
+						client: c,
+						packet: DisconnectedPacket,
+					}
+					b.SubmitWork(c.info.clientID, msg)
+					return
+				}
 			}
 
 			packet, err := packets.ReadPacket(nc)
 			if err != nil {
 				log.Error("read packet error: ", zap.Error(err), zap.String("ClientID", c.info.clientID))
-				msg := &Message{client: c, packet: DisconnectdPacket}
-				b.SubmitWork(msg)
+				msg := &Message{
+					client: c,
+					packet: DisconnectedPacket,
+				}
+				b.SubmitWork(c.info.clientID, msg)
 				return
 			}
 
+			// if packet is disconnect from client, then need to break the read packet loop and clear will msg.
+			if _, isDisconnect := packet.(*packets.DisconnectPacket); isDisconnect {
+				c.info.willMsg = nil
+				c.cancelFunc()
+			} else {
+				c.lastMsgTime = time.Now().Unix()
+			}
+
 			msg := &Message{
 				client: c,
 				packet: packet,
 			}
-			b.SubmitWork(msg)
+			b.SubmitWork(c.info.clientID, msg)
 		}
 	}
 
 }
 
+// extractPacketFields function reads a control packet and extracts only the fields
+// that needs to pass on UTF-8 validation
+func extractPacketFields(msgPacket packets.ControlPacket) []string {
+	var fields []string
+
+	// Get packet type
+	switch msgPacket.(type) {
+	case *packets.ConnackPacket:
+	case *packets.ConnectPacket:
+	case *packets.PublishPacket:
+		packet := msgPacket.(*packets.PublishPacket)
+		fields = append(fields, packet.TopicName)
+		break
+
+	case *packets.SubscribePacket:
+	case *packets.SubackPacket:
+	case *packets.UnsubscribePacket:
+		packet := msgPacket.(*packets.UnsubscribePacket)
+		fields = append(fields, packet.Topics...)
+		break
+	}
+
+	return fields
+}
+
+// validatePacketFields function checks if any of control packets fields has ill-formed
+// UTF-8 string
+func validatePacketFields(msgPacket packets.ControlPacket) (validFields bool) {
+
+	// Extract just fields that needs validation
+	fields := extractPacketFields(msgPacket)
+
+	for _, field := range fields {
+
+		// Perform the basic UTF-8 validation
+		if !utf8.ValidString(field) {
+			validFields = false
+			return
+		}
+
+		// A UTF-8 encoded string MUST NOT include an encoding of the null
+		// character U+0000
+		// If a receiver (Server or Client) receives a Control Packet containing U+0000
+		// it MUST close the Network Connection
+		// http://docs.oasis-open.org/mqtt/mqtt/v3.1.1/os/mqtt-v3.1.1-os.pdf page 14
+		if bytes.ContainsAny([]byte(field), "\u0000") {
+			validFields = false
+			return
+		}
+	}
+
+	// All fields have been validated successfully
+	validFields = true
+
+	return
+}
+
 func ProcessMessage(msg *Message) {
 	c := msg.client
 	ca := msg.packet
 	if ca == nil {
 		return
 	}
-	log.Debug("Recv message:", zap.String("message type", reflect.TypeOf(msg.packet).String()[9:]), zap.String("ClientID", c.info.clientID))
+
+	if c.typ == CLIENT {
+		log.Debug("Recv message:", zap.String("message type", reflect.TypeOf(msg.packet).String()[9:]), zap.String("ClientID", c.info.clientID))
+	}
+
+	// Perform field validation
+	if !validatePacketFields(ca) {
+
+		// http://docs.oasis-open.org/mqtt/mqtt/v3.1.1/os/mqtt-v3.1.1-os.pdf
+		// Page 14
+		//
+		// If a Server or Client receives a Control Packet
+		// containing ill-formed UTF-8 it MUST close the Network Connection
+
+		_ = c.conn.Close()
+
+		// Update client status
+		//c.status = Disconnected
+
+		log.Error("Client disconnected due to malformed packet", zap.String("ClientID", c.info.clientID))
+
+		return
+	}
+
 	switch ca.(type) {
 	case *packets.ConnackPacket:
 	case *packets.ConnectPacket:
 	case *packets.PublishPacket:
 		packet := ca.(*packets.PublishPacket)
+
 		c.ProcessPublish(packet)
 	case *packets.PubackPacket:
+		packet := ca.(*packets.PubackPacket)
+		c.inflightMu.Lock()
+		if _, found := c.inflight[packet.MessageID]; found {
+			delete(c.inflight, packet.MessageID)
+		} else {
+			log.Error("Duplicated PUBACK PacketId", zap.Uint16("MessageID", packet.MessageID))
+		}
+		c.inflightMu.Unlock()
 	case *packets.PubrecPacket:
+		packet := ca.(*packets.PubrecPacket)
+		c.inflightMu.RLock()
+		ielem, found := c.inflight[packet.MessageID]
+		c.inflightMu.RUnlock()
+		if found {
+			if ielem.status == Publish {
+				ielem.status = Pubrel
+				ielem.timestamp = time.Now().Unix()
+			} else if ielem.status == Pubrel {
+				log.Error("Duplicated PUBREC PacketId", zap.Uint16("MessageID", packet.MessageID))
+			}
+		} else {
+			log.Error("The PUBREC PacketId is not found.", zap.Uint16("MessageID", packet.MessageID))
+		}
+
+		pubrel := packets.NewControlPacket(packets.Pubrel).(*packets.PubrelPacket)
+		pubrel.MessageID = packet.MessageID
+		if err := c.WriterPacket(pubrel); err != nil {
+			log.Error("send pubrel error, ", zap.Error(err), zap.String("ClientID", c.info.clientID))
+			return
+		}
 	case *packets.PubrelPacket:
+		packet := ca.(*packets.PubrelPacket)
+		_ = c.pubRel(packet.MessageID)
+		pubcomp := packets.NewControlPacket(packets.Pubcomp).(*packets.PubcompPacket)
+		pubcomp.MessageID = packet.MessageID
+		if err := c.WriterPacket(pubcomp); err != nil {
+			log.Error("send pubcomp error, ", zap.Error(err), zap.String("ClientID", c.info.clientID))
+			return
+		}
 	case *packets.PubcompPacket:
+		packet := ca.(*packets.PubcompPacket)
+		c.inflightMu.Lock()
+		delete(c.inflight, packet.MessageID)
+		c.inflightMu.Unlock()
 	case *packets.SubscribePacket:
 		packet := ca.(*packets.SubscribePacket)
 		c.ProcessSubscribe(packet)
@@ -161,18 +372,32 @@ func ProcessMessage(msg *Message) {
 }
 
 func (c *client) ProcessPublish(packet *packets.PublishPacket) {
+	switch c.typ {
+	case CLIENT:
+		c.processClientPublish(packet)
+	case ROUTER:
+		c.processRouterPublish(packet)
+	case CLUSTER:
+		c.processRemotePublish(packet)
+	}
+
+}
+
+func (c *client) processRemotePublish(packet *packets.PublishPacket) {
 	if c.status == Disconnected {
 		return
 	}
 
 	topic := packet.TopicName
-	if topic == BrokerInfoTopic && c.typ == CLUSTER {
+	if topic == BrokerInfoTopic {
 		c.ProcessInfo(packet)
 		return
 	}
 
-	if !c.CheckTopicAuth(PUB, topic) {
-		log.Error("Pub Topics Auth failed, ", zap.String("topic", topic), zap.String("ClientID", c.info.clientID))
+}
+
+func (c *client) processRouterPublish(packet *packets.PublishPacket) {
+	if c.status == Disconnected {
 		return
 	}
 
@@ -196,6 +421,60 @@ func (c *client) ProcessPublish(packet *packets.PublishPacket) {
 
 }
 
+func (c *client) processClientPublish(packet *packets.PublishPacket) {
+
+	topic := packet.TopicName
+
+	if !c.broker.CheckTopicAuth(PUB, c.info.clientID, c.info.username, c.info.remoteIP, topic) {
+		log.Error("Pub Topics Auth failed, ", zap.String("topic", topic), zap.String("ClientID", c.info.clientID))
+		return
+	}
+
+	//publish to bridge mq
+	cost := c.broker.Publish(&bridge.Elements{
+		ClientID:  c.info.clientID,
+		Username:  c.info.username,
+		Action:    bridge.Publish,
+		Timestamp: time.Now().Unix(),
+		Payload:   string(packet.Payload),
+		Topic:     topic,
+	})
+
+	if cost {
+		return
+	}
+
+	switch packet.Qos {
+	case QosAtMostOnce:
+		c.ProcessPublishMessage(packet)
+	case QosAtLeastOnce:
+		puback := packets.NewControlPacket(packets.Puback).(*packets.PubackPacket)
+		puback.MessageID = packet.MessageID
+		if err := c.WriterPacket(puback); err != nil {
+			log.Error("send puback error, ", zap.Error(err), zap.String("ClientID", c.info.clientID))
+			return
+		}
+		c.ProcessPublishMessage(packet)
+	case QosExactlyOnce:
+		if err := c.registerPublishPacketId(packet.MessageID); err != nil {
+			return
+		} else {
+			pubrec := packets.NewControlPacket(packets.Pubrec).(*packets.PubrecPacket)
+			pubrec.MessageID = packet.MessageID
+			if err := c.WriterPacket(pubrec); err != nil {
+				log.Error("send pubrec error, ", zap.Error(err), zap.String("ClientID", c.info.clientID))
+				return
+			}
+			c.ProcessPublishMessage(packet)
+		}
+		return
+	default:
+		log.Error("publish with unknown qos", zap.String("ClientID", c.info.clientID))
+		return
+	}
+
+}
+
 func (c *client) ProcessPublishMessage(packet *packets.PublishPacket) {
 
 	b := c.broker
@@ -210,20 +489,18 @@ func (c *client) ProcessPublishMessage(packet *packets.PublishPacket) {
 		}
 	}
 
-	c.mu.Lock()
 	err := c.topicsMgr.Subscribers([]byte(packet.TopicName), packet.Qos, &c.subs, &c.qoss)
-	c.mu.Unlock()
 	if err != nil {
 		log.Error("Error retrieving subscribers list: ", zap.String("ClientID", c.info.clientID))
 		return
 	}
 
-	// log.Info("psubs num: ", len(r.psubs))
 	if len(c.subs) == 0 {
 		return
 	}
 
-	for _, sub := range c.subs {
+	var qsub []int
+	for i, sub := range c.subs {
 		s, ok := sub.(*subscription)
 		if ok {
 			if s.client.typ == ROUTER {
@@ -231,17 +508,36 @@ func (c *client) ProcessPublishMessage(packet *packets.PublishPacket) {
 					continue
 				}
 			}
-			err := s.client.WriterPacket(packet)
-			if err != nil {
-				log.Error("process message for psub error,  ", zap.Error(err), zap.String("ClientID", c.info.clientID))
+			if s.share {
+				qsub = append(qsub, i)
+			} else {
+				publish(s, packet)
 			}
+
 		}
 
 	}
 
+	if len(qsub) > 0 {
+		idx := r.Intn(len(qsub))
+		sub := c.subs[qsub[idx]].(*subscription)
+		publish(sub, packet)
+	}
+
 }
 
 func (c *client) ProcessSubscribe(packet *packets.SubscribePacket) {
+	switch c.typ {
+	case CLIENT:
+		c.processClientSubscribe(packet)
+	case ROUTER:
+		fallthrough
+	case REMOTE:
+		c.processRouterSubscribe(packet)
+	}
+}
+
+func (c *client) processClientSubscribe(packet *packets.SubscribePacket) {
 	if c.status == Disconnected {
 		return
 	}
@@ -250,38 +546,73 @@ func (c *client) ProcessSubscribe(packet *packets.SubscribePacket) {
 	if b == nil {
 		return
 	}
-	topics := packet.Topics
+
+	subTopics := packet.Topics
 	qoss := packet.Qoss
 
 	suback := packets.NewControlPacket(packets.Suback).(*packets.SubackPacket)
 	suback.MessageID = packet.MessageID
 	var retcodes []byte
 
-	for i, topic := range topics {
+	for i, topic := range subTopics {
 		t := topic
 		//check topic auth for client
-		if !c.CheckTopicAuth(SUB, topic) {
+		if !b.CheckTopicAuth(SUB, c.info.clientID, c.info.username, c.info.remoteIP, topic) {
 			log.Error("Sub topic Auth failed: ", zap.String("topic", topic), zap.String("ClientID", c.info.clientID))
 			retcodes = append(retcodes, QosFailure)
 			continue
 		}
 
+		b.Publish(&bridge.Elements{
+			ClientID:  c.info.clientID,
+			Username:  c.info.username,
+			Action:    bridge.Subscribe,
+			Timestamp: time.Now().Unix(),
+			Topic:     topic,
+		})
+
+		groupName := ""
+		share := false
+		if strings.HasPrefix(topic, "$share/") {
+			substr := groupCompile.FindStringSubmatch(topic)
+			if len(substr) != 3 {
+				retcodes = append(retcodes, QosFailure)
+				continue
+			}
+			share = true
+			groupName = substr[1]
+			topic = substr[2]
+		}
+
+		c.subMapMu.Lock()
+		if oldSub, exist := c.subMap[t]; exist {
+			_ = c.topicsMgr.Unsubscribe([]byte(oldSub.topic), oldSub)
+			delete(c.subMap, t)
+		}
+		c.subMapMu.Unlock()
+
 		sub := &subscription{
-			topic:  t,
-			qos:    qoss[i],
-			client: c,
+			topic:     topic,
+			qos:       qoss[i],
+			client:    c,
+			share:     share,
+			groupName: groupName,
 		}
 
 		rqos, err := c.topicsMgr.Subscribe([]byte(topic), qoss[i], sub)
 		if err != nil {
-			return
+			log.Error("subscribe error, ", zap.Error(err), zap.String("ClientID", c.info.clientID))
+			retcodes = append(retcodes, QosFailure)
+			continue
 		}
 
-		c.subMap[topic] = sub
-		c.session.AddTopic(topic, qoss[i])
-		retcodes = append(retcodes, rqos)
-		c.topicsMgr.Retained([]byte(topic), &c.rmsgs)
+		c.subMapMu.Lock()
+		c.subMap[t] = sub
+		c.subMapMu.Unlock()
 
+		_ = c.session.AddTopic(t, qoss[i])
+		retcodes = append(retcodes, rqos)
+		_ = c.topicsMgr.Retained([]byte(topic), &c.rmsgs)
 	}
 
 	suback.ReturnCodes = retcodes
@@ -292,9 +623,7 @@ func (c *client) ProcessSubscribe(packet *packets.SubscribePacket) {
 		return
 	}
 	//broadcast subscribe message
-	if c.typ == CLIENT {
-		go b.BroadcastSubOrUnsubMessage(packet)
-	}
+	go b.BroadcastSubOrUnsubMessage(packet)
 
 	//process retain message
 	for _, rm := range c.rmsgs {
@@ -306,7 +635,82 @@ func (c *client) ProcessSubscribe(packet *packets.SubscribePacket) {
 	}
 }
 
+func (c *client) processRouterSubscribe(packet *packets.SubscribePacket) {
+	if c.status == Disconnected {
+		return
+	}
+
+	b := c.broker
+	if b == nil {
+		return
+	}
+
+	subTopics := packet.Topics
+	qoss := packet.Qoss
+
+	suback := packets.NewControlPacket(packets.Suback).(*packets.SubackPacket)
+	suback.MessageID = packet.MessageID
+	var retcodes []byte
+
+	for i, topic := range subTopics {
+		t := topic
+		groupName := ""
+		share := false
+		if strings.HasPrefix(topic, "$share/") {
+			substr := groupCompile.FindStringSubmatch(topic)
+			if len(substr) != 3 {
+				retcodes = append(retcodes, QosFailure)
+				continue
+			}
+			share = true
+			groupName = substr[1]
+			topic = substr[2]
+		}
+
+		sub := &subscription{
+			topic:     topic,
+			qos:       qoss[i],
+			client:    c,
+			share:     share,
+			groupName: groupName,
+		}
+
+		rqos, err := c.topicsMgr.Subscribe([]byte(topic), qoss[i], sub)
+		if err != nil {
+			log.Error("subscribe error, ", zap.Error(err), zap.String("ClientID", c.info.clientID))
+			retcodes = append(retcodes, QosFailure)
+			continue
+		}
+
+		c.subMapMu.Lock()
+		c.subMap[t] = sub
+		c.subMapMu.Unlock()
+
+		c.routeSubMapMu.Lock()
+		addSubMap(c.routeSubMap, topic)
+		c.routeSubMapMu.Unlock()
+		retcodes = append(retcodes, rqos)
+	}
+
+	suback.ReturnCodes = retcodes
+
+	err := c.WriterPacket(suback)
+	if err != nil {
+		log.Error("send suback error, ", zap.Error(err), zap.String("ClientID", c.info.clientID))
+		return
+	}
+}
+
 func (c *client) ProcessUnSubscribe(packet *packets.UnsubscribePacket) {
+	switch c.typ {
+	case CLIENT:
+		c.processClientUnSubscribe(packet)
+	case ROUTER:
+		c.processRouterUnSubscribe(packet)
+	}
+}
+
+func (c *client) processRouterUnSubscribe(packet *packets.UnsubscribePacket) {
 	if c.status == Disconnected {
 		return
 	}
@@ -314,16 +718,70 @@ func (c *client) ProcessUnSubscribe(packet *packets.UnsubscribePacket) {
 	if b == nil {
 		return
 	}
-	topics := packet.Topics
 
-	for _, topic := range topics {
-		t := []byte(topic)
-		sub, exist := c.subMap[topic]
-		if exist {
-			c.topicsMgr.Unsubscribe(t, sub)
-			c.session.RemoveTopic(topic)
+	unSubTopics := packet.Topics
+
+	for _, topic := range unSubTopics {
+		c.subMapMu.Lock()
+		if sub, exist := c.subMap[topic]; exist {
+			c.routeSubMapMu.Lock()
+			if retainNum := delSubMap(c.routeSubMap, topic); retainNum > 0 {
+				c.routeSubMapMu.Unlock()
+				c.subMapMu.Unlock()
+				continue
+			}
+			c.routeSubMapMu.Unlock()
+
+			_ = c.topicsMgr.Unsubscribe([]byte(sub.topic), sub)
 			delete(c.subMap, topic)
 		}
+		c.subMapMu.Unlock()
+	}
+
+	unsuback := packets.NewControlPacket(packets.Unsuback).(*packets.UnsubackPacket)
+	unsuback.MessageID = packet.MessageID
+
+	err := c.WriterPacket(unsuback)
+	if err != nil {
+		log.Error("send unsuback error, ", zap.Error(err), zap.String("ClientID", c.info.clientID))
+		return
+	}
+}
+
+func (c *client) processClientUnSubscribe(packet *packets.UnsubscribePacket) {
+	if c.status == Disconnected {
+		return
+	}
+	b := c.broker
+	if b == nil {
+		return
+	}
+
+	unSubTopics := packet.Topics
+
+	for _, topic := range unSubTopics {
+		{
+			//publish kafka
+
+			b.Publish(&bridge.Elements{
+				ClientID:  c.info.clientID,
+				Username:  c.info.username,
+				Action:    bridge.Unsubscribe,
+				Timestamp: time.Now().Unix(),
+				Topic:     topic,
+			})
+
+		}
+
+		c.subMapMu.Lock()
+		sub, exist := c.subMap[topic]
+		if exist {
+			_ = c.topicsMgr.Unsubscribe([]byte(sub.topic), sub)
+			_ = c.session.RemoveTopic(topic)
+			delete(c.subMap, topic)
+		}
+		c.subMapMu.Unlock()
+
 	}
 
 	unsuback := packets.NewControlPacket(packets.Unsuback).(*packets.UnsubackPacket)
@@ -335,9 +793,7 @@ func (c *client) ProcessUnSubscribe(packet *packets.UnsubscribePacket) {
 		return
 	}
 	// //process ubsubscribe message
-	if c.typ == CLIENT {
-		b.BroadcastSubOrUnsubMessage(packet)
-	}
+	b.BroadcastSubOrUnsubMessage(packet)
 }
 
 func (c *client) ProcessPing() {
@@ -361,41 +817,87 @@ func (c *client) Close() {
 
 	c.status = Disconnected
 	//wait for message complete
-	time.Sleep(1 * time.Second)
+	// time.Sleep(1 * time.Second)
 	// c.status = Disconnected
 
-	if c.conn != nil {
-		c.conn.Close()
-		c.conn = nil
-	}
-
 	b := c.broker
-	subs := c.subMap
-	if b != nil {
-		b.removeClient(c)
+	b.Publish(&bridge.Elements{
+		ClientID:  c.info.clientID,
+		Username:  c.info.username,
+		Action:    bridge.Disconnect,
+		Timestamp: time.Now().Unix(),
+	})
 
-		if c.typ == CLIENT {
-			b.BroadcastUnSubscribe(subs)
-			//offline notification
-			b.OnlineOfflineNotification(c.info.clientID, false)
+	if c.mu.Lock(); c.conn != nil {
+		_ = c.conn.Close()
+		c.conn = nil
+		c.mu.Unlock()
+	}
+
+	if b == nil {
+		return
+	}
+
+	b.removeClient(c)
+
+	c.subMapMu.RLock()
+	defer c.subMapMu.RUnlock()
+
+	unSubTopics := make([]string, 0)
+	for topic, sub := range c.subMap {
+		unSubTopics = append(unSubTopics, topic)
+
+		// guard against race condition where a client gets Close() but wasn't initialized yet fully
+		if sub == nil || b.topicsMgr == nil {
+			continue
 		}
 
-		if c.info.willMsg != nil {
-			b.PublishMessage(c.info.willMsg)
-		}
-
-		if c.typ == CLUSTER {
-			b.ConnectToDiscovery()
-		}
-
-		//do reconnect
-		if c.typ == REMOTE {
-			go b.connectRouter(c.route.remoteID, c.route.remoteUrl)
+		if err := b.topicsMgr.Unsubscribe([]byte(sub.topic), sub); err != nil {
+			log.Error("unsubscribe error, ", zap.Error(err), zap.String("ClientID", c.info.clientID))
 		}
 	}
+
+	if c.typ == CLIENT {
+		b.BroadcastUnSubscribe(unSubTopics)
+
+		var pubPack = PubPacket{}
+		if c.info.willMsg != nil {
+			pubPack.TopicName = c.info.willMsg.TopicName
+			pubPack.Payload = c.info.willMsg.Payload
+		}
+
+		pubInfo := Info{
+			ClientID:  c.info.clientID,
+			Username:  c.info.username,
+			Password:  c.info.password,
+			Keepalive: c.info.keepalive,
+			WillMsg:   pubPack,
+		}
+		//offline notification
+		b.OnlineOfflineNotification(pubInfo, false, c.lastMsgTime)
+	}
+
+	if c.info.willMsg != nil {
+		b.PublishMessage(c.info.willMsg)
+	}
+
+	if c.typ == CLUSTER {
+		b.ConnectToDiscovery()
+	}
+
+	//do reconnect
+	if c.typ == REMOTE {
+		go b.connectRouter(c.route.remoteID, c.route.remoteUrl)
+	}
+
 }
 
 func (c *client) WriterPacket(packet packets.ControlPacket) error {
+	defer func() {
+		if err := recover(); err != nil {
+			log.Error("recover error, ", zap.Any("recover", err))
+		}
+	}()
 	if c.status == Disconnected {
 		return nil
 	}
@@ -409,7 +911,61 @@ func (c *client) WriterPacket(packet packets.ControlPacket) error {
 	}
 
 	c.mu.Lock()
-	err := packet.Write(c.conn)
-	c.mu.Unlock()
-	return err
+	defer c.mu.Unlock()
+	return packet.Write(c.conn)
+}
+
+func (c *client) registerPublishPacketId(packetId uint16) error {
+	if c.isAwaitingFull() {
+		log.Error("Dropped qos2 packet for too many awaiting_rel", zap.Uint16("id", packetId))
+		return errors.New("DROPPED_QOS2_PACKET_FOR_TOO_MANY_AWAITING_REL")
+	}
+
+	c.awaitingRelMu.Lock()
+	defer c.awaitingRelMu.Unlock()
+	if _, found := c.awaitingRel[packetId]; found {
+		return errors.New("RC_PACKET_IDENTIFIER_IN_USE")
+	}
+	c.awaitingRel[packetId] = time.Now().Unix()
+	time.AfterFunc(time.Duration(awaitRelTimeout)*time.Second, c.expireAwaitingRel)
+	return nil
+}
+
+func (c *client) isAwaitingFull() bool {
+	c.awaitingRelMu.RLock()
+	defer c.awaitingRelMu.RUnlock()
+	if c.maxAwaitingRel == 0 {
+		return false
+	}
+	if len(c.awaitingRel) < c.maxAwaitingRel {
+		return false
+	}
+	return true
+}
+
+func (c *client) expireAwaitingRel() {
+	c.awaitingRelMu.Lock()
+	defer c.awaitingRelMu.Unlock()
+	if len(c.awaitingRel) == 0 {
+		return
+	}
+	now := time.Now().Unix()
+	for packetId, Timestamp := range c.awaitingRel {
+		if now-Timestamp >= awaitRelTimeout {
+			log.Error("Dropped qos2 packet for await_rel_timeout", zap.Uint16("id", packetId))
+			delete(c.awaitingRel, packetId)
+		}
+	}
+}
+
+func (c *client) pubRel(packetId uint16) error {
+	c.awaitingRelMu.Lock()
+	defer c.awaitingRelMu.Unlock()
+	if _, found := c.awaitingRel[packetId]; found {
+		delete(c.awaitingRel, packetId)
+	} else {
+		log.Error("The PUBREL PacketId is not found", zap.Uint16("id", packetId))
+		return errors.New("RC_PACKET_IDENTIFIER_NOT_FOUND")
+	}
+	return nil
 }

broker/comm.go

@@ -1,15 +1,14 @@
-/* Copyright (c) 2018, joy.zhou <chowyu08@gmail.com>
- */
 package broker
 
 import (
-	"crypto/md5"
-	"crypto/rand"
-	"encoding/base64"
-	"encoding/hex"
-	"io"
 	"reflect"
 	"time"
+
+	jsoniter "github.com/json-iterator/go"
+	"go.uber.org/zap"
+
+	"github.com/eclipse/paho.mqtt.golang/packets"
+	uuid "github.com/google/uuid"
 )
 
 const (
@@ -91,13 +90,151 @@ func equal(k1, k2 interface{}) bool {
 	return false
 }
 
-func GenUniqueId() string {
-	b := make([]byte, 48)
-	if _, err := io.ReadFull(rand.Reader, b); err != nil {
-		return ""
+func addSubMap(m map[string]uint64, topic string) {
+	subNum, exist := m[topic]
+	if exist {
+		m[topic] = subNum + 1
+	} else {
+		m[topic] = 1
 	}
-	h := md5.New()
-	h.Write([]byte(base64.URLEncoding.EncodeToString(b)))
-	return hex.EncodeToString(h.Sum(nil))
-	// return GetMd5String()
+}
+
+func delSubMap(m map[string]uint64, topic string) uint64 {
+	subNum, exist := m[topic]
+	if exist {
+		if subNum > 1 {
+			m[topic] = subNum - 1
+			return subNum - 1
+		}
+	} else {
+		m[topic] = 0
+	}
+	return 0
+}
+
+func GenUniqueId() string {
+	id, err := uuid.NewRandom()
+	if err != nil {
+		log.Error("uuid.NewRandom() returned an error: " + err.Error())
+	}
+	return id.String()
+}
+
+func wrapPublishPacket(packet *packets.PublishPacket) *packets.PublishPacket {
+	p := packet.Copy()
+	wrapPayload := map[string]interface{}{
+		"message_id": GenUniqueId(),
+		"payload":    string(p.Payload),
+	}
+	b, _ := json.Marshal(wrapPayload)
+	p.Payload = b
+	return p
+}
+
+func unWrapPublishPacket(packet *packets.PublishPacket) *packets.PublishPacket {
+	p := packet.Copy()
+	if payload := jsoniter.Get(p.Payload, "payload").ToString(); payload != "" {
+		p.Payload = []byte(payload)
+	}
+	return p
+}
+
+func publish(sub *subscription, packet *packets.PublishPacket) {
+	switch packet.Qos {
+	case QosAtMostOnce:
+		err := sub.client.WriterPacket(packet)
+		if err != nil {
+			log.Error("process message for psub error,  ", zap.Error(err))
+		}
+	case QosAtLeastOnce, QosExactlyOnce:
+		sub.client.inflightMu.Lock()
+		sub.client.inflight[packet.MessageID] = &inflightElem{status: Publish, packet: packet, timestamp: time.Now().Unix()}
+		sub.client.inflightMu.Unlock()
+		err := sub.client.WriterPacket(packet)
+		if err != nil {
+			log.Error("process message for psub error,  ", zap.Error(err))
+		}
+		sub.client.ensureRetryTimer()
+	default:
+		log.Error("publish with unknown qos", zap.String("ClientID", sub.client.info.clientID))
+		return
+	}
+}
+
+// timer for retry delivery
+func (c *client) ensureRetryTimer(interval ...int64) {
+
+	c.retryTimerLock.Lock()
+	defer c.retryTimerLock.Unlock()
+
+	if c.retryTimer != nil {
+		return
+	}
+
+	if len(interval) > 1 {
+		return
+	}
+	timerInterval := retryInterval
+	if len(interval) == 1 {
+		timerInterval = interval[0]
+	}
+
+	c.retryTimer = time.AfterFunc(time.Duration(timerInterval)*time.Second, c.retryDelivery)
+
+	return
+}
+
+func (c *client) resetRetryTimer() {
+	// lock mutex before reading retryTimer
+	c.retryTimerLock.Lock()
+	defer c.retryTimerLock.Unlock()
+
+	if c.retryTimer == nil {
+		return
+	}
+
+	// reset timer
+	c.retryTimer = nil
+}
+
+func (c *client) retryDelivery() {
+	c.resetRetryTimer()
+	c.inflightMu.RLock()
+	ilen := len(c.inflight)
+
+	if c.mu.Lock(); c.conn == nil || ilen == 0 { //Reset timer when client offline OR inflight is empty
+		c.inflightMu.RUnlock()
+		c.mu.Unlock()
+		return
+	}
+
+	// copy the to be retried elements out of the map to only hold the lock for a short time and use the new slice later to iterate
+	// through them
+	toRetryEle := make([]*inflightElem, 0, ilen)
+	for _, infEle := range c.inflight {
+		toRetryEle = append(toRetryEle, infEle)
+	}
+	c.inflightMu.RUnlock()
+	now := time.Now().Unix()
+
+	for _, infEle := range toRetryEle {
+		age := now - infEle.timestamp
+		if age >= retryInterval {
+			if infEle.status == Publish {
+				c.WriterPacket(infEle.packet)
+				infEle.timestamp = now
+			} else if infEle.status == Pubrel {
+				pubrel := packets.NewControlPacket(packets.Pubrel).(*packets.PubrelPacket)
+				pubrel.MessageID = infEle.packet.MessageID
+				c.WriterPacket(pubrel)
+				infEle.timestamp = now
+			}
+		} else {
+			if age < 0 {
+				age = 0
+			}
+			c.ensureRetryTimer(retryInterval - age)
+		}
+	}
+	c.ensureRetryTimer()
 }

broker/config.go

@@ -1,11 +1,8 @@
-/* Copyright (c) 2018, joy.zhou <chowyu08@gmail.com>
- */
 package broker
 
 import (
 	"crypto/tls"
 	"crypto/x509"
-	"encoding/json"
 	"errors"
 	"flag"
 	"fmt"
@@ -13,24 +10,40 @@ import (
 	"os"
 
 	"github.com/fhmq/hmq/logger"
+	"github.com/fhmq/hmq/plugins/auth"
+	"github.com/fhmq/hmq/plugins/bridge"
+	jsoniter "github.com/json-iterator/go"
 	"go.uber.org/zap"
 )
 
+var json = jsoniter.ConfigCompatibleWithStandardLibrary
+
 type Config struct {
-	Worker  int       `json:"workerNum"`
-	Host    string    `json:"host"`
-	Port    string    `json:"port"`
-	Cluster RouteInfo `json:"cluster"`
-	Router  string    `json:"router"`
-	TlsHost string    `json:"tlsHost"`
-	TlsPort string    `json:"tlsPort"`
-	WsPath  string    `json:"wsPath"`
-	WsPort  string    `json:"wsPort"`
-	WsTLS   bool      `json:"wsTLS"`
-	TlsInfo TLSInfo   `json:"tlsInfo"`
-	Acl     bool      `json:"acl"`
-	AclConf string    `json:"aclConf"`
-	Debug   bool      `json:"-"`
+	Worker       int       `json:"workerNum"`
+	HTTPPort     string    `json:"httpPort"`
+	Host         string    `json:"host"`
+	Port         string    `json:"port"`
+	Cluster      RouteInfo `json:"cluster"`
+	Router       string    `json:"router"`
+	TlsHost      string    `json:"tlsHost"`
+	TlsPort      string    `json:"tlsPort"`
+	WsPath       string    `json:"wsPath"`
+	WsPort       string    `json:"wsPort"`
+	WsTLS        bool      `json:"wsTLS"`
+	TlsInfo      TLSInfo   `json:"tlsInfo"`
+	Debug        bool      `json:"debug"`
+	Plugin       Plugins   `json:"plugins"`
+	UnixFilePath string    `json:"unixFilePath"`
+}
+
+type Plugins struct {
+	Auth   auth.Auth
+	Bridge bridge.BridgeMQ
+}
+
+type NamedPlugins struct {
+	Auth   string
+	Bridge string
 }
 
 type RouteInfo struct {
@@ -49,11 +62,10 @@ var DefaultConfig *Config = &Config{
 	Worker: 4096,
 	Host:   "0.0.0.0",
 	Port:   "1883",
-	Acl:    false,
 }
 
 var (
-	log *zap.Logger
+	log = logger.Prod().Named("broker")
 )
 
 func showHelp() {
@@ -74,8 +86,11 @@ func ConfigureConfig(args []string) (*Config, error) {
 	fs.BoolVar(&help, "help", false, "Show this message.")
 	fs.IntVar(&config.Worker, "w", 1024, "worker num to process message, perfer (client num)/10.")
 	fs.IntVar(&config.Worker, "worker", 1024, "worker num to process message, perfer (client num)/10.")
-	fs.StringVar(&config.Port, "port", "1883", "Port to listen on.")
-	fs.StringVar(&config.Port, "p", "1883", "Port to listen on.")
+	fs.StringVar(&config.HTTPPort, "httpport", "8080", "Port to listen on.")
+	fs.StringVar(&config.HTTPPort, "hp", "8080", "Port to listen on.")
+	fs.StringVar(&config.Port, "port", "", "Port to listen on.")
+	fs.StringVar(&config.Port, "p", "", "Port to listen on.")
+	fs.StringVar(&config.UnixFilePath, "unixfilepath", "", "unix sock to listen on.")
 	fs.StringVar(&config.Host, "host", "0.0.0.0", "Network host to listen on")
 	fs.StringVar(&config.Cluster.Port, "cp", "", "Cluster port from which members can connect.")
 	fs.StringVar(&config.Cluster.Port, "clusterport", "", "Cluster port from which members can connect.")
@@ -108,9 +123,6 @@ func ConfigureConfig(args []string) (*Config, error) {
 		}
 	})
 
-	logger.InitLogger(config.Debug)
-	log = logger.Get().Named("Broker")
-
 	if configFile != "" {
 		tmpConfig, e := LoadConfig(configFile)
 		if e != nil {
@@ -120,6 +132,10 @@ func ConfigureConfig(args []string) (*Config, error) {
 		}
 	}
 
+	if config.Debug {
+		log = logger.Debug().Named("broker")
+	}
+
 	if err := config.check(); err != nil {
 		return nil, err
 	}
@@ -132,7 +148,7 @@ func LoadConfig(filename string) (*Config, error) {
 
 	content, err := ioutil.ReadFile(filename)
 	if err != nil {
-		log.Error("Read config file error: ", zap.Error(err))
+		// log.Error("Read config file error: ", zap.Error(err))
 		return nil, err
 	}
 	// log.Info(string(content))
@@ -140,13 +156,24 @@ func LoadConfig(filename string) (*Config, error) {
 	var config Config
 	err = json.Unmarshal(content, &config)
 	if err != nil {
-		log.Error("Unmarshal config file error: ", zap.Error(err))
+		// log.Error("Unmarshal config file error: ", zap.Error(err))
 		return nil, err
 	}
 
 	return &config, nil
 }
 
+func (p *Plugins) UnmarshalJSON(b []byte) error {
+	var named NamedPlugins
+	err := json.Unmarshal(b, &named)
+	if err != nil {
+		return err
+	}
+	p.Auth = auth.NewAuth(named.Auth)
+	p.Bridge = bridge.NewBridgeMQ(named.Bridge)
+	return nil
+}
+
 func (config *Config) check() error {
 
 	if config.Worker == 0 {
@@ -211,7 +238,7 @@ func NewTLSConfig(tlsInfo TLSInfo) (*tls.Config, error) {
 			return nil, err
 		}
 		pool := x509.NewCertPool()
-		ok := pool.AppendCertsFromPEM([]byte(rootPEM))
+		ok := pool.AppendCertsFromPEM(rootPEM)
 		if !ok {
 			return nil, fmt.Errorf("failed to parse root ca certificate")
 		}

broker/http.go

@@ -0,0 +1,65 @@
+package broker
+
+import (
+	"github.com/gin-gonic/gin"
+)
+
+const (
+	CONNECTIONS	= "api/v1/connections"
+)
+
+type ConnClient struct {
+	Info				`json:"info"`
+	LastMsgTime	int64		`json:"lastMsg"`
+}
+
+type resp struct {
+	Code	int		`json:"code,omitempty"`
+	Clients	[]ConnClient	`json:"clients,omitempty"`
+}
+
+func InitHTTPMoniter(b *Broker) {
+	gin.SetMode(gin.ReleaseMode)
+	router := gin.Default()
+	router.DELETE(CONNECTIONS + "/:clientid", func(c *gin.Context) {
+		clientid := c.Param("clientid")
+		cli, ok := b.clients.Load(clientid)
+		if ok {
+			conn, success := cli.(*client)
+			if success {
+				conn.Close()
+			}
+		}
+		r := resp{Code: 0}
+		c.JSON(200, &r)
+	})
+	router.GET(CONNECTIONS, func(c *gin.Context) {
+		conns := make([]ConnClient, 0)
+		b.clients.Range(func (k, v interface{}) bool {
+			cl, _ := v.(*client)
+			var pubPack = PubPacket{}
+			if cl.info.willMsg != nil {
+				pubPack.TopicName = cl.info.willMsg.TopicName
+				pubPack.Payload = cl.info.willMsg.Payload
+			}
+
+			msg := ConnClient{
+				Info: Info{
+					ClientID: cl.info.clientID,
+					Username: cl.info.username,
+					Password: cl.info.password,
+					Keepalive: cl.info.keepalive,
+					WillMsg: pubPack,
+				},
+				LastMsgTime: cl.lastMsgTime,
+			}
+
+			conns = append(conns, msg)
+			return true
+		})
+		r := resp{Clients: conns}
+		c.JSON(200, &r)
+	})
+
+	router.Run(":" + b.config.HTTPPort)
+}

broker/info.go

@@ -1,5 +1,3 @@
-/* Copyright (c) 2018, joy.zhou <chowyu08@gmail.com>
- */
 package broker
 
 import (
@@ -17,7 +15,7 @@ func (c *client) SendInfo() {
 	}
 	url := c.info.localIP + ":" + c.broker.config.Cluster.Port
 
-	infoMsg := NewInfo(c.broker.id, url, false)
+	infoMsg := NewInfo(c.broker.id, url)
 	err := c.WriterPacket(infoMsg)
 	if err != nil {
 		log.Error("send info message error, ", zap.Error(err))
@@ -48,6 +46,8 @@ func (c *client) SendConnect() {
 		return
 	}
 	m := packets.NewControlPacket(packets.Connect).(*packets.ConnectPacket)
+	m.ProtocolName = "MQIsdp"
+	m.ProtocolVersion = 3
 
 	m.CleanSession = true
 	m.ClientIdentifier = c.info.clientID
@@ -60,13 +60,12 @@ func (c *client) SendConnect() {
 	log.Info("send connect success")
 }
 
-func NewInfo(sid, url string, isforword bool) *packets.PublishPacket {
+func NewInfo(sid, url string) *packets.PublishPacket {
 	pub := packets.NewControlPacket(packets.Publish).(*packets.PublishPacket)
 	pub.Qos = 0
 	pub.TopicName = BrokerInfoTopic
 	pub.Retain = false
 	info := fmt.Sprintf(`{"brokerID":"%s","brokerUrl":"%s"}`, sid, url)
-	// log.Info("new info", string(info))
 	pub.Payload = []byte(info)
 	return pub
 }

broker/lib/sessions/session.go

@@ -55,7 +55,7 @@ func (this *Session) Init(msg *packets.ConnectPacket) error {
 
 	this.topics = make(map[string]byte, 1)
 
-	this.id = string(msg.ClientIdentifier)
+	this.id = msg.ClientIdentifier
 
 	this.initted = true
 

broker/lib/topics/memtopics.go

@@ -78,7 +78,7 @@ func (this *memTopics) Unsubscribe(topic []byte, sub interface{}) error {
 	return this.sroot.sremove(topic, sub)
 }
 
-// Returned values will be invalidated by the next Subscribers call
+// Subscribers Returned values will be invalidated by the next Subscribers call
 func (this *memTopics) Subscribers(topic []byte, qos byte, subs *[]interface{}, qoss *[]byte) error {
 	if !ValidQos(qos) {
 		return fmt.Errorf("Invalid QoS %d", qos)
@@ -104,7 +104,7 @@ func (this *memTopics) Retain(msg *packets.PublishPacket) error {
 		return this.rroot.rremove([]byte(msg.TopicName))
 	}
 
-	return this.rroot.rinsert([]byte(msg.TopicName), msg)
+	return this.rroot.rinsertOrUpdate([]byte(msg.TopicName), msg)
 }
 
 func (this *memTopics) Retained(topic []byte, msgs *[]*packets.PublishPacket) error {
@@ -244,6 +244,9 @@ func (this *snode) smatch(topic []byte, qos byte, subs *[]interface{}, qoss *[]b
 	// let's find the subscribers that match the qos and append them to the list.
 	if len(topic) == 0 {
 		this.matchQos(qos, subs, qoss)
+		if mwcn, _ := this.snodes[MWC]; mwcn != nil {
+			mwcn.matchQos(qos, subs, qoss)
+		}
 		return nil
 	}
 
@@ -283,13 +286,11 @@ func newRNode() *rnode {
 	}
 }
 
-func (this *rnode) rinsert(topic []byte, msg *packets.PublishPacket) error {
+func (this *rnode) rinsertOrUpdate(topic []byte, msg *packets.PublishPacket) error {
 	// If there's no more topic levels, that means we are at the matching rnode.
 	if len(topic) == 0 {
 		// Reuse the message if possible
-		if this.msg == nil {
-			this.msg = msg
-		}
+		this.msg = msg
 
 		return nil
 	}
@@ -312,7 +313,7 @@ func (this *rnode) rinsert(topic []byte, msg *packets.PublishPacket) error {
 		this.rnodes[level] = n
 	}
 
-	return n.rinsert(rem, msg)
+	return n.rinsertOrUpdate(rem, msg)
 }
 
 // Remove the retained message for the supplied topic

broker/session.go

@@ -1,5 +1,3 @@
-/* Copyright (c) 2018, joy.zhou <chowyu08@gmail.com>
- */
 package broker
 
 import "github.com/eclipse/paho.mqtt.golang/packets"

conf/hmq.config

@@ -6,7 +6,7 @@
 		"host": "0.0.0.0",
 		"port": "1993"
 	},
-	"router": "127.0.0.1:9888",
+	"httpPort": "8080",
 	"tlsPort": "8883",
 	"tlsHost": "0.0.0.0",
 	"wsPort": "1888",
@@ -18,6 +18,8 @@
 		"certFile": "ssl/server/cert.pem",
 		"keyFile": "ssl/server/key.pem"
 	},
-	"acl": false,
-	"aclConf": "conf/acl.conf"
+	"plugins": {
+		"auth": "mock",
+		"bridge": "csvlog"
+	}
 }

deploy/config.yaml

@@ -0,0 +1,37 @@
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: mqtt-broker
+data:
+  hmq.config: |
+    {
+      "workerNum": 4096,
+      "port": "1883",
+      "host": "0.0.0.0",
+      "plugins": ["authhttp","kafka"]
+    }
+
+  kafka.json: |
+    {
+        "addr": [
+            "127.0.0.1:9090"
+        ],
+        "onConnect": "onConnect",
+        "onPublish": "onPublish",
+        "onSubscribe": "onSubscribe",
+        "onDisconnect": "onDisconnect",
+        "onUnsubscribe": "onUnsubscribe",
+        "deliverMap": {
+          "#": "publish",
+          "/upload/+/#": "upload"
+        }
+    }
+  
+  authhttp.json: |
+    {
+        "auth": "http://127.0.0.1:9090/mqtt/auth",
+        "acl": "http://127.0.0.1:9090/mqtt/acl",
+        "super": "http://127.0.0.1:9090/mqtt/superuser"
+    }
+    
+

deploy/deploy.yaml

@@ -0,0 +1,44 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: mqtt-broker
+spec:
+  selector:
+    matchLabels:
+      app: mqtt-broker
+  replicas: 1
+  template:
+    metadata:
+      labels:
+        app: mqtt-broker
+    spec:
+      containers:
+        - name: mqtt-broker
+          image: hmq:v0.1.0
+          ports:
+            - containerPort: 1883
+            - containerPort: 8080
+          volumeMounts:
+            - name: mqtt-broker
+              mountPath: /conf
+              subPath: hmq.config
+            - name: mqtt-broker
+              mountPath: /plugins/kafka/kafka.json
+              subPath: kafka.json
+            - name: mqtt-broker
+              mountPath: /plugins/authttp/http.json
+              subPath: kafka.json     
+      volumes:
+        - name: mqtt-broker
+          configMap:
+            name: mqtt-broker
+            items:
+              - key: hmq.config
+                path: hmq.config
+            items:
+              - key: http.json
+                path: http.json
+            items:
+              - key: kafka.json
+                path: kafka.json
+

deploy/svc.yaml

@@ -0,0 +1,13 @@
+kind: Service
+apiVersion: v1
+metadata:
+  name: mqtt-broker
+spec:
+  selector:
+    app: mqtt-broker
+  ports:
+    - protocol: TCP
+      port: 1883
+      targetPort: 1883
+  type: ClusterIP
+  sessionAffinity: ClientIP

go.mod

@@ -0,0 +1,64 @@
+module github.com/fhmq/hmq
+
+go 1.21
+
+require (
+	github.com/Shopify/sarama v1.38.1
+	github.com/bitly/go-simplejson v0.5.0
+	github.com/cespare/xxhash/v2 v2.1.2
+	github.com/eapache/queue v1.1.0
+	github.com/eclipse/paho.mqtt.golang v1.4.2
+	github.com/gin-gonic/gin v1.9.1
+	github.com/google/uuid v1.3.0
+	github.com/json-iterator/go v1.1.12
+	github.com/patrickmn/go-cache v2.1.0+incompatible
+	github.com/stretchr/testify v1.8.3
+	go.uber.org/zap v1.24.0
+	golang.org/x/net v0.17.0
+)
+
+require (
+	github.com/bmizerany/assert v0.0.0-20160611221934-b7ed37b82869 // indirect
+	github.com/bytedance/sonic v1.9.1 // indirect
+	github.com/chenzhuoyu/base64x v0.0.0-20221115062448-fe3a3abad311 // indirect
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/eapache/go-resiliency v1.3.0 // indirect
+	github.com/eapache/go-xerial-snappy v0.0.0-20230111030713-bf00bc1b83b6 // indirect
+	github.com/gabriel-vasile/mimetype v1.4.2 // indirect
+	github.com/gin-contrib/sse v0.1.0 // indirect
+	github.com/go-playground/locales v0.14.1 // indirect
+	github.com/go-playground/universal-translator v0.18.1 // indirect
+	github.com/go-playground/validator/v10 v10.14.0 // indirect
+	github.com/goccy/go-json v0.10.2 // indirect
+	github.com/golang/snappy v0.0.4 // indirect
+	github.com/hashicorp/errwrap v1.0.0 // indirect
+	github.com/hashicorp/go-multierror v1.1.1 // indirect
+	github.com/hashicorp/go-uuid v1.0.3 // indirect
+	github.com/jcmturner/aescts/v2 v2.0.0 // indirect
+	github.com/jcmturner/dnsutils/v2 v2.0.0 // indirect
+	github.com/jcmturner/gofork v1.7.6 // indirect
+	github.com/jcmturner/gokrb5/v8 v8.4.3 // indirect
+	github.com/jcmturner/rpc/v2 v2.0.3 // indirect
+	github.com/klauspost/compress v1.15.14 // indirect
+	github.com/klauspost/cpuid/v2 v2.2.4 // indirect
+	github.com/kr/text v0.2.0 // indirect
+	github.com/leodido/go-urn v1.2.4 // indirect
+	github.com/mattn/go-isatty v0.0.19 // indirect
+	github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect
+	github.com/modern-go/reflect2 v1.0.2 // indirect
+	github.com/pelletier/go-toml/v2 v2.0.8 // indirect
+	github.com/pierrec/lz4/v4 v4.1.17 // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
+	github.com/rcrowley/go-metrics v0.0.0-20201227073835-cf1acfcdf475 // indirect
+	github.com/rogpeppe/go-internal v1.12.0 // indirect
+	github.com/twitchyliquid64/golang-asm v0.15.1 // indirect
+	github.com/ugorji/go/codec v1.2.11 // indirect
+	go.uber.org/atomic v1.7.0 // indirect
+	go.uber.org/multierr v1.6.0 // indirect
+	golang.org/x/arch v0.3.0 // indirect
+	golang.org/x/crypto v0.14.0 // indirect
+	golang.org/x/sys v0.13.0 // indirect
+	golang.org/x/text v0.13.0 // indirect
+	google.golang.org/protobuf v1.33.0 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
+)

go.sum

@@ -0,0 +1,181 @@
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+golang.org/x/arch v0.3.0/go.mod h1:5om86z9Hs0C8fWVUuoMHwpExlXzs5Tkyp9hOrfG7pp8=
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+golang.org/x/crypto v0.0.0-20220722155217-630584e8d5aa/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=
+golang.org/x/crypto v0.14.0 h1:wBqGXzWJW6m1XrIKlAH0Hs1JJ7+9KBwnIO8v66Q9cHc=
+golang.org/x/crypto v0.14.0/go.mod h1:MVFd36DqK4CsrnJYDkBA3VC4m2GkXAM0PvzMCn4JQf4=
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+golang.org/x/net v0.17.0 h1:pVaXccu2ozPjCXewfr1S7xza/zcXTity9cCdXQYSjIM=
+golang.org/x/net v0.17.0/go.mod h1:NxSsAGuq816PNPmqtQdLE42eU2Fs7NoRIZrHJAlaCOE=
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+golang.org/x/sync v0.1.0/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
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+golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.13.0 h1:Af8nKPmuFypiUBjVoU9V20FiaFXOcuZI21p0ycVYYGE=
+golang.org/x/sys v0.13.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
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+golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
+golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
+golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
+golang.org/x/text v0.13.0 h1:ablQoSUd0tRdKxZewP80B+BaqeKJuVhuRxj/dkrun3k=
+golang.org/x/text v0.13.0/go.mod h1:TvPlkZtksWOMsz7fbANvkp4WM8x/WCo/om8BMLbz+aE=
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+golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543 h1:E7g+9GITq07hpfrRu66IVDexMakfv52eLZ2CXBWiKr4=
+golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+google.golang.org/protobuf v1.33.0 h1:uNO2rsAINq/JlFpSdYEKIZ0uKD/R9cpdv0T+yoGwGmI=
+google.golang.org/protobuf v1.33.0/go.mod h1:c6P6GXX6sHbq/GpV6MGZEdwhWPcYBgnhAHhKbcUYpos=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
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+gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+rsc.io/pdf v0.1.1/go.mod h1:n8OzWcQ6Sp37PL01nO98y4iUCRdTGarVfzxY20ICaU4=

lib/sessions/redisprovider.go

@@ -1,95 +0,0 @@
-package sessions
-
-import (
-	"time"
-
-	log "github.com/cihub/seelog"
-	"github.com/go-redis/redis"
-	jsoniter "github.com/json-iterator/go"
-)
-
-var redisClient *redis.Client
-var _ SessionsProvider = (*redisProvider)(nil)
-
-const (
-	sessionName = "session"
-)
-
-type redisProvider struct {
-}
-
-func init() {
-	Register("redis", NewRedisProvider())
-}
-
-func InitRedisConn(url string) {
-	redisClient = redis.NewClient(&redis.Options{
-		Addr:     "127.0.0.1:6379",
-		Password: "", // no password set
-		DB:       0,  // use default DB
-	})
-	err := redisClient.Ping().Err()
-	for err != nil {
-		log.Error("connect redis error: ", err, " 3s try again...")
-		time.Sleep(3 * time.Second)
-		err = redisClient.Ping().Err()
-	}
-}
-
-func NewRedisProvider() *redisProvider {
-	return &redisProvider{}
-}
-
-func (r *redisProvider) New(id string) (*Session, error) {
-	val, _ := jsoniter.Marshal(&Session{id: id})
-
-	err := redisClient.HSet(sessionName, id, val).Err()
-	if err != nil {
-		return nil, err
-	}
-
-	result, err := redisClient.HGet(sessionName, id).Bytes()
-	if err != nil {
-		return nil, err
-	}
-
-	sess := Session{}
-	err = jsoniter.Unmarshal(result, &sess)
-	if err != nil {
-		return nil, err
-	}
-
-	return &sess, nil
-}
-
-func (r *redisProvider) Get(id string) (*Session, error) {
-
-	result, err := redisClient.HGet(sessionName, id).Bytes()
-	if err != nil {
-		return nil, err
-	}
-
-	sess := Session{}
-	err = jsoniter.Unmarshal(result, &sess)
-	if err != nil {
-		return nil, err
-	}
-
-	return &sess, nil
-}
-
-func (r *redisProvider) Del(id string) {
-	redisClient.HDel(sessionName, id)
-}
-
-func (r *redisProvider) Save(id string) error {
-	return nil
-}
-
-func (r *redisProvider) Count() int {
-	return int(redisClient.HLen(sessionName).Val())
-}
-
-func (r *redisProvider) Close() error {
-	return redisClient.Del(sessionName).Err()
-}

logger/logger.go

@@ -5,17 +5,27 @@ package logger
 
 import (
 	"go.uber.org/zap"
+	"go.uber.org/zap/zapcore"
 )
 
 var (
 	// env can be setup at build time with Go Linker. Value could be prod or whatever else for dev env
-	instance *zap.Logger
-	logCfg   zap.Config
+	instance   *zap.Logger
+	logCfg     zap.Config
+	encoderCfg = zap.NewProductionEncoderConfig()
 )
 
+func init() {
+	encoderCfg.TimeKey = "timestamp"
+	encoderCfg.EncodeTime = zapcore.ISO8601TimeEncoder
+}
+
 // NewDevLogger return a logger for dev builds
 func NewDevLogger() (*zap.Logger, error) {
-	logCfg := zap.NewDevelopmentConfig()
+	logCfg := zap.NewProductionConfig()
+	logCfg.Level = zap.NewAtomicLevelAt(zap.DebugLevel)
+	// logCfg.DisableStacktrace = true
+	logCfg.EncoderConfig = encoderCfg
 	return logCfg.Build()
 }
 
@@ -24,27 +34,31 @@ func NewProdLogger() (*zap.Logger, error) {
 	logCfg := zap.NewProductionConfig()
 	logCfg.DisableStacktrace = true
 	logCfg.Level = zap.NewAtomicLevelAt(zap.InfoLevel)
+	logCfg.EncoderConfig = encoderCfg
 	return logCfg.Build()
 }
 
-func InitLogger(debug bool) {
-	var err error
-	var log *zap.Logger
-	if debug {
-		log, err = NewDevLogger()
-	} else {
-		log, err = NewProdLogger()
-	}
-	if err != nil {
-		panic("Unable to create a logger.")
-	}
-	defer log.Sync()
+func Prod() *zap.Logger {
 
-	log.Debug("Logger initialization succeeded")
-	instance = log.Named("hmq")
-}
+	l, _ := NewProdLogger()
+	instance = l
+
+	return instance
+}
+
+func Debug() *zap.Logger {
+
+	l, _ := NewDevLogger()
+	instance = l
+
+	return instance
+}
+
+func Get() *zap.Logger {
+	if instance == nil {
+		l, _ := NewProdLogger()
+		instance = l
+	}
 
-// Get return a *zap.Logger instance
-func Get() *zap.Logger {
 	return instance
 }

logger/logger_test.go

@@ -1,5 +1,6 @@
-/* Copyright (c) 2018, joy.zhou <chowyu08@gmail.com>
- */
+/*
+Copyright (c) 2018, joy.zhou <chowyu08@gmail.com>
+*/
 package logger
 
 import (

main.go

@@ -1,35 +1,30 @@
-/* Copyright (c) 2018, joy.zhou <chowyu08@gmail.com>
-
-Permission to use, copy, modify, and/or distribute this software for any
-purpose with or without fee is hereby granted, provided that the above
-copyright notice and this permission notice appear in all copies.
-*/
 package main
 
 import (
-	"log"
 	"os"
 	"os/signal"
-	"runtime"
 
 	"github.com/fhmq/hmq/broker"
+	"github.com/fhmq/hmq/logger"
+	"go.uber.org/zap"
 )
 
+var log = logger.Get()
+
 func main() {
-	runtime.GOMAXPROCS(runtime.NumCPU())
 	config, err := broker.ConfigureConfig(os.Args[1:])
 	if err != nil {
-		log.Fatal("configure broker config error: ", err)
+		log.Fatal("configure broker config error", zap.Error(err))
 	}
 
 	b, err := broker.NewBroker(config)
 	if err != nil {
-		log.Fatal("New Broker error: ", err)
+		log.Fatal("New Broker error: ", zap.Error(err))
 	}
 	b.Start()
 
 	s := waitForSignal()
-	log.Println("signal received, broker closed.", s)
+	log.Info("signal received, broker closed.", zap.Any("signal", s))
 }
 
 func waitForSignal() os.Signal {

plugins/auth/auth.go

@@ -0,0 +1,27 @@
+package auth
+
+import (
+	authfile "github.com/fhmq/hmq/plugins/auth/authfile"
+	"github.com/fhmq/hmq/plugins/auth/authhttp"
+)
+
+const (
+	AuthHTTP = "authhttp"
+	AuthFile = "authfile"
+)
+
+type Auth interface {
+	CheckACL(action, clientID, username, ip, topic string) bool
+	CheckConnect(clientID, username, password string) bool
+}
+
+func NewAuth(name string) Auth {
+	switch name {
+	case AuthHTTP:
+		return authhttp.Init()
+	case AuthFile:
+		return authfile.Init()
+	default:
+		return &mockAuth{}
+	}
+}

plugins/auth/authfile/Readme.md

@@ -0,0 +1,54 @@
+## ACL Configure
+```
+Attention: Acl Type Change, change `pub =1, sub=2`  to `sub =1, pub=2`
+```
+#### The ACL rules define:
+~~~
+Allow | type | value | pubsub | Topics
+~~~
+#### ACL Config
+~~~
+## type clientid , username, ipaddr
+##sub 1 ,  pub 2,  pubsub 3
+## %c is clientid , %u is username
+allow      ip          127.0.0.1   2     $SYS/#
+allow      clientid    0001        3     #
+allow      username    admin       3     #
+allow      username    joy         3     /test,hello/world 
+allow      clientid    *           1     toCloud/%c
+allow      username    *           1     toCloud/%u
+deny       clientid    *           3     #
+~~~
+
+~~~
+#allow local sub $SYS topic
+allow      ip          127.0.0.1   1    $SYS/#
+~~~
+~~~
+#allow client who's id with 0001 or username with admin pub sub all topic
+allow      clientid    0001        3        #
+allow      username    admin       3        #
+~~~
+~~~
+#allow client with the username joy can pub sub topic '/test' and 'hello/world'
+allow      username    joy         3     /test,hello/world 
+~~~
+~~~
+#allow all client pub the topic toCloud/{clientid/username}
+allow      clientid    *         2         toCloud/%c
+allow      username    *         2         toCloud/%u
+~~~
+~~~
+#deny all client pub sub all topic
+deny       clientid    *         3           #
+~~~
+Client match acl rule one by one
+~~~
+          ---------              ---------              ---------
+Client -> | Rule1 | --nomatch--> | Rule2 | --nomatch--> | Rule3 | --> 
+          ---------              ---------              ---------
+              |                      |                      |
+            match                  match                  match
+             \|/                    \|/                    \|/
+        allow | deny           allow | deny           allow | deny
+~~~

plugins/auth/authfile/acl.conf

@@ -1,4 +1,4 @@
-## pub 1 ,  sub 2,  pubsub 3
+## sub 1 ,  pub 2,  pubsub 3
 ## %c is clientid , %s is username
 ##auth     type        value       pub/sub      topic
 allow      ip          127.0.0.1      2         $SYS/#       
@@ -9,4 +9,4 @@ allow      clientid    *              1         toCloud/%c
 allow      username    *              1         toCloud/%u   
 allow      clientid    *              2         toDevice/%c  
 allow      username    *              2         toDevice/%u  
-deny       clientid    *              3         #            
+deny       clientid    *              3         #     

plugins/auth/authfile/acl.go

@@ -0,0 +1,23 @@
+package acl
+
+type aclAuth struct {
+	config *ACLConfig
+}
+
+func Init() *aclAuth {
+	aclConfig, err := AclConfigLoad("./plugins/auth/authfile/acl.conf")
+	if err != nil {
+		panic(err)
+	}
+	return &aclAuth{
+		config: aclConfig,
+	}
+}
+
+func (a *aclAuth) CheckConnect(clientID, username, password string) bool {
+	return true
+}
+
+func (a *aclAuth) CheckACL(action, clientID, username, ip, topic string) bool {
+	return checkTopicAuth(a.config, action, ip, username, clientID, topic)
+}

plugins/auth/authfile/acl_test.go

@@ -0,0 +1,23 @@
+//+build test
+
+package acl
+
+import (
+	"os"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestOrigAcls(t *testing.T) {
+	pwd, _ := os.Getwd()
+	os.Chdir("../../../")
+	aclOrig := Init()
+	os.Chdir(pwd)
+
+	// rule: allow      ip          127.0.0.1      2         $SYS/#
+	origAllowed := aclOrig.CheckACL(PUB, "dummyClientID", "dummyUser", "127.0.0.1", "$SYS/something")
+	assert.True(t, origAllowed)
+	origAllowed = aclOrig.CheckACL(SUB, "dummyClientID", "dummyUser", "127.0.0.1", "$SYS/something")
+	assert.False(t, origAllowed)
+}

plugins/auth/authfile/aclcheck.go

@@ -1,22 +1,21 @@
-/* Copyright (c) 2018, joy.zhou <chowyu08@gmail.com>*/
 package acl
 
 import "strings"
 
-func CheckTopicAuth(ACLInfo *ACLConfig, typ int, ip, username, clientid, topic string) bool {
+func checkTopicAuth(ACLInfo *ACLConfig, action, ip, username, clientid, topic string) bool {
 	for _, info := range ACLInfo.Info {
 		ctyp := info.Typ
 		switch ctyp {
 		case CLIENTID:
-			if match, auth := info.checkWithClientID(typ, clientid, topic); match {
+			if match, auth := info.checkWithClientID(action, clientid, topic); match {
 				return auth
 			}
 		case USERNAME:
-			if match, auth := info.checkWithUsername(typ, username, topic); match {
+			if match, auth := info.checkWithUsername(action, username, topic); match {
 				return auth
 			}
 		case IP:
-			if match, auth := info.checkWithIP(typ, ip, topic); match {
+			if match, auth := info.checkWithIP(action, ip, topic); match {
 				return auth
 			}
 		}
@@ -24,18 +23,18 @@ func CheckTopicAuth(ACLInfo *ACLConfig, typ int, ip, username, clientid, topic s
 	return false
 }
 
-func (a *AuthInfo) checkWithClientID(typ int, clientid, topic string) (bool, bool) {
+func (a *AuthInfo) checkWithClientID(action, clientid, topic string) (bool, bool) {
 	auth := false
 	match := false
 	if a.Val == "*" || a.Val == clientid {
 		for _, tp := range a.Topics {
 			des := strings.Replace(tp, "%c", clientid, -1)
-			if typ == PUB {
+			if action == PUB {
 				if pubTopicMatch(topic, des) {
 					match = true
 					auth = a.checkAuth(PUB)
 				}
-			} else if typ == SUB {
+			} else if action == SUB {
 				if subTopicMatch(topic, des) {
 					match = true
 					auth = a.checkAuth(SUB)
@@ -46,18 +45,18 @@ func (a *AuthInfo) checkWithClientID(typ int, clientid, topic string) (bool, boo
 	return match, auth
 }
 
-func (a *AuthInfo) checkWithUsername(typ int, username, topic string) (bool, bool) {
+func (a *AuthInfo) checkWithUsername(action, username, topic string) (bool, bool) {
 	auth := false
 	match := false
 	if a.Val == "*" || a.Val == username {
 		for _, tp := range a.Topics {
 			des := strings.Replace(tp, "%u", username, -1)
-			if typ == PUB {
+			if action == PUB {
 				if pubTopicMatch(topic, des) {
 					match = true
 					auth = a.checkAuth(PUB)
 				}
-			} else if typ == SUB {
+			} else if action == SUB {
 				if subTopicMatch(topic, des) {
 					match = true
 					auth = a.checkAuth(SUB)
@@ -68,18 +67,18 @@ func (a *AuthInfo) checkWithUsername(typ int, username, topic string) (bool, boo
 	return match, auth
 }
 
-func (a *AuthInfo) checkWithIP(typ int, ip, topic string) (bool, bool) {
+func (a *AuthInfo) checkWithIP(action, ip, topic string) (bool, bool) {
 	auth := false
 	match := false
 	if a.Val == "*" || a.Val == ip {
 		for _, tp := range a.Topics {
 			des := tp
-			if typ == PUB {
+			if action == PUB {
 				if pubTopicMatch(topic, des) {
 					auth = a.checkAuth(PUB)
 					match = true
 				}
-			} else if typ == SUB {
+			} else if action == SUB {
 				if subTopicMatch(topic, des) {
 					auth = a.checkAuth(SUB)
 					match = true
@@ -90,15 +89,15 @@ func (a *AuthInfo) checkWithIP(typ int, ip, topic string) (bool, bool) {
 	return match, auth
 }
 
-func (a *AuthInfo) checkAuth(typ int) bool {
+func (a *AuthInfo) checkAuth(action string) bool {
 	auth := false
-	if typ == PUB {
+	if action == PUB {
 		if a.Auth == ALLOW && (a.PubSub == PUB || a.PubSub == PUBSUB) {
 			auth = true
 		} else if a.Auth == DENY && a.PubSub == SUB {
 			auth = true
 		}
-	} else if typ == SUB {
+	} else if action == SUB {
 		if a.Auth == ALLOW && (a.PubSub == SUB || a.PubSub == PUBSUB) {
 			auth = true
 		} else if a.Auth == DENY && a.PubSub == PUB {

plugins/auth/authfile/aclconfig.go

@@ -1,5 +1,3 @@
-/* Copyright (c) 2018, joy.zhou <chowyu08@gmail.com>
- */
 package acl
 
 import (
@@ -7,14 +5,13 @@ import (
 	"errors"
 	"io"
 	"os"
-	"strconv"
 	"strings"
 )
 
 const (
-	PUB      = 1
-	SUB      = 2
-	PUBSUB   = 3
+	SUB      = "1"
+	PUB      = "2"
+	PUBSUB   = "3"
 	CLIENTID = "clientid"
 	USERNAME = "username"
 	IP       = "ip"
@@ -26,7 +23,7 @@ type AuthInfo struct {
 	Auth   string
 	Typ    string
 	Val    string
-	PubSub int
+	PubSub string
 	Topics []string
 }
 
@@ -36,21 +33,18 @@ type ACLConfig struct {
 }
 
 func AclConfigLoad(file string) (*ACLConfig, error) {
-	if file == "" {
-		file = "./conf/acl.conf"
-	}
 	aclconifg := &ACLConfig{
 		File: file,
 		Info: make([]*AuthInfo, 0, 4),
 	}
-	err := aclconifg.Prase()
+	err := aclconifg.Parse()
 	if err != nil {
 		return nil, err
 	}
 	return aclconifg, err
 }
 
-func (c *ACLConfig) Prase() error {
+func (c *ACLConfig) Parse() error {
 	f, err := os.Open(c.File)
 	defer f.Close()
 	if err != nil {
@@ -81,12 +75,16 @@ func (c *ACLConfig) Prase() error {
 			parseErr = errors.New("\"" + line + "\" format is error")
 			break
 		}
-		var pubsub int
-		pubsub, err = strconv.Atoi(tmpArr[3])
-		if err != nil {
+		if tmpArr[3] != PUB && tmpArr[3] != SUB && tmpArr[3] != PUBSUB {
 			parseErr = errors.New("\"" + line + "\" format is error")
 			break
 		}
+		// var pubsub int
+		// pubsub, err = strconv.Atoi(tmpArr[3])
+		// if err != nil {
+		// 	parseErr = errors.New("\"" + line + "\" format is error")
+		// 	break
+		// }
 		topicStr := strings.Replace(tmpArr[4], " ", "", -1)
 		topicStr = strings.Replace(topicStr, "\n", "", -1)
 		topics := strings.Split(topicStr, ",")
@@ -95,7 +93,7 @@ func (c *ACLConfig) Prase() error {
 			Typ:    tmpArr[1],
 			Val:    tmpArr[2],
 			Topics: topics,
-			PubSub: pubsub,
+			PubSub: tmpArr[3],
 		}
 		c.Info = append(c.Info, tmpAuth)
 		if err != nil {

plugins/auth/authfile/spilt.go

@@ -1,5 +1,3 @@
-/* Copyright (c) 2018, joy.zhou <chowyu08@gmail.com>
- */
 package acl
 
 import (

plugins/auth/authhttp/authhttp.go

@@ -0,0 +1,179 @@
+package authhttp
+
+import (
+	"encoding/json"
+	"io"
+	"io/ioutil"
+	"net/http"
+	"net/url"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/fhmq/hmq/logger"
+	"go.uber.org/zap"
+)
+
+//Config device kafka config
+type Config struct {
+	AuthURL  string `json:"auth"`
+	ACLURL   string `json:"acl"`
+	SuperURL string `json:"super"`
+}
+
+type authHTTP struct {
+	client *http.Client
+}
+
+var (
+	config     Config
+	log        = logger.Get().Named("authhttp")
+	httpClient *http.Client
+)
+
+//Init init kafak client
+func Init() *authHTTP {
+	content, err := ioutil.ReadFile("./plugins/auth/authhttp/http.json")
+	if err != nil {
+		log.Fatal("Read config file error: ", zap.Error(err))
+	}
+	// log.Info(string(content))
+
+	err = json.Unmarshal(content, &config)
+	if err != nil {
+		log.Fatal("Unmarshal config file error: ", zap.Error(err))
+	}
+	// fmt.Println("http: config: ", config)
+
+	httpClient = &http.Client{
+		Transport: &http.Transport{
+			MaxConnsPerHost:     100,
+			MaxIdleConns:        100,
+			MaxIdleConnsPerHost: 100,
+		},
+		Timeout: time.Second * 100,
+	}
+	return &authHTTP{client: httpClient}
+}
+
+// CheckConnect check mqtt connect
+func (a *authHTTP) CheckConnect(clientID, username, password string) bool {
+	action := "connect"
+	{
+		aCache := checkCache(action, clientID, username, password, "")
+		if aCache != nil {
+			if aCache.password == password && aCache.username == username && aCache.action == action {
+				return true
+			}
+		}
+	}
+
+	data := url.Values{}
+	data.Add("username", username)
+	data.Add("clientid", clientID)
+	data.Add("password", password)
+
+	req, err := http.NewRequest("POST", config.AuthURL, strings.NewReader(data.Encode()))
+	if err != nil {
+		log.Error("new request super: ", zap.Error(err))
+		return false
+	}
+	req.Header.Add("Content-Type", "application/x-www-form-urlencoded")
+	req.Header.Add("Content-Length", strconv.Itoa(len(data.Encode())))
+
+	resp, err := a.client.Do(req)
+	if err != nil {
+		log.Error("request super: ", zap.Error(err))
+		return false
+	}
+
+	defer resp.Body.Close()
+	io.Copy(ioutil.Discard, resp.Body)
+	if resp.StatusCode == http.StatusOK {
+		addCache(action, clientID, username, password, "")
+		return true
+	}
+
+	return false
+}
+
+// //CheckSuper check mqtt connect
+// func CheckSuper(clientID, username, password string) bool {
+// 	action := "connect"
+// 	{
+// 		aCache := checkCache(action, clientID, username, password, "")
+// 		if aCache != nil {
+// 			if aCache.password == password && aCache.username == username && aCache.action == action {
+// 				return true
+// 			}
+// 		}
+// 	}
+
+// 	data := url.Values{}
+// 	data.Add("username", username)
+// 	data.Add("clientid", clientID)
+// 	data.Add("password", password)
+
+// 	req, err := http.NewRequest("POST", config.SuperURL, strings.NewReader(data.Encode()))
+// 	if err != nil {
+// 		log.Error("new request super: ", zap.Error(err))
+// 		return false
+// 	}
+// 	req.Header.Add("Content-Type", "application/x-www-form-urlencoded")
+// 	req.Header.Add("Content-Length", strconv.Itoa(len(data.Encode())))
+
+// 	resp, err := httpClient.Do(req)
+// 	if err != nil {
+// 		log.Error("request super: ", zap.Error(err))
+// 		return false
+// 	}
+
+// 	defer resp.Body.Close()
+// 	io.Copy(ioutil.Discard, resp.Body)
+
+// 	if resp.StatusCode == http.StatusOK {
+// 		return true
+// 	}
+// 	return false
+// }
+
+//CheckACL check mqtt connect
+func (a *authHTTP) CheckACL(action, clientID, username, ip, topic string) bool {
+
+	{
+		aCache := checkCache(action, "", username, "", topic)
+		if aCache != nil {
+			if aCache.topic == topic && aCache.action == action {
+				return true
+			}
+		}
+	}
+
+	req, err := http.NewRequest("GET", config.ACLURL, nil)
+	if err != nil {
+		log.Error("get acl: ", zap.Error(err))
+		return false
+	}
+
+	data := req.URL.Query()
+
+	data.Add("username", username)
+	data.Add("topic", topic)
+	data.Add("access", action)
+	req.URL.RawQuery = data.Encode()
+	// fmt.Println("req:", req)
+	resp, err := a.client.Do(req)
+	if err != nil {
+		log.Error("request acl: ", zap.Error(err))
+		return false
+	}
+
+	defer resp.Body.Close()
+	io.Copy(ioutil.Discard, resp.Body)
+
+	if resp.StatusCode == http.StatusOK {
+		addCache(action, "", username, "", topic)
+		return true
+	}
+	return false
+}

plugins/auth/authhttp/cache.go

@@ -0,0 +1,32 @@
+package authhttp
+
+import (
+	"time"
+
+	"github.com/patrickmn/go-cache"
+)
+
+type authCache struct {
+	action   string
+	username string
+	clientID string
+	password string
+	topic    string
+}
+
+var (
+	// cache = make(map[string]authCache)
+	c = cache.New(5*time.Minute, 10*time.Minute)
+)
+
+func checkCache(action, clientID, username, password, topic string) *authCache {
+	authc, found := c.Get(username)
+	if found {
+		return authc.(*authCache)
+	}
+	return nil
+}
+
+func addCache(action, clientID, username, password, topic string) {
+	c.Set(username, &authCache{action: action, username: username, clientID: clientID, password: password, topic: topic}, cache.DefaultExpiration)
+}

plugins/auth/authhttp/http.json

@@ -0,0 +1,5 @@
+{
+    "auth": "http://127.0.0.1:9090/mqtt/auth",
+    "acl": "http://127.0.0.1:9090/mqtt/acl",
+    "super": "http://127.0.0.1:9090/mqtt/superuser"
+}

plugins/auth/mock.go

@@ -0,0 +1,11 @@
+package auth
+
+type mockAuth struct{}
+
+func (m *mockAuth) CheckACL(action, clientID, username, ip, topic string) bool {
+	return true
+}
+
+func (m *mockAuth) CheckConnect(clientID, username, password string) bool {
+	return true
+}

plugins/bridge/CSVLog.md

@@ -0,0 +1,50 @@
+# CSVLog Plugin For HMQ
+This is a bridge implementation for HMQ that allows messages to be logged to a CSV file at runtime.
+
+It can be used for debugging/monitoring purposes, for integration with other systems/platforms, or as an audit trail of messages.
+
+The plugin allows you to define 0, 1, or more filters which determine which messages get bridged. Where no filters are defined the plugin bridges every message. Where one or more filters exist, the plugin applies  the filter/s and only brdiges messages that match the filter spec.
+
+The plugin allows you provide a filename for the output file, and also supports three special filenames {LOG},{STDOUT}, and {NULL}. {LOG} results in messages being bridged to the log, {STDOUT} bridges them to Std out, and {NULL} simply skips and returns without an error.
+
+## Configuration
+The configiration settings for CSVLog are defined by the struct csvBridgeConfig.
+```
+type csvBridgeConfig struct {
+	FileName          string   `json:"fileName"`
+	LogFileMaxSizeMB  int64    `json:"logFileMaxSizeMB"`
+	LogFileMaxFiles   int64    `json:"logFileMaxFiles"`
+	WriteIntervalSecs int64    `json:"writeIntervalSecs"`
+	CommandTopic      string   `json:"commandTopic"`
+	Filters           []string `json:"filters"`
+}
+```
+| Setting | Description |
+| ----------- | ----------- |
+| FileName | A complete filename for the output file, or {LOG} to send bridged messages to the log, {STDOUT} to send bridged messages to STDOUT, or {NULL} to not bridge anything at all |
+| LogFileMaxSizeMB | The size in megabytes at which the log file is rotated |
+| LogFileMaxFiles | The maximum number of rotated logfiles to retain before they're deleted |
+| WriteIntervalSecs | The delay before flushing any pending writes to the file |
+| CommandTopic | The name of a topic to which commands relating to CSVLog will be sent eg "bridge/CSVLOG/command" |
+| Filters | An array of filter specifications which are used to determine which messages are bridged, if there are no filters specified the filter is assumed to be "#" which bridges everything. Filters are specified the same way that topic acls are described|
+
+## Filters
+
+Filters use the same syntax as for ACL permissions.
+
+So a filter can name a specific topic..
+
+"animals/cats" will bridge messages sent to the "animals/cats" topic. 
+
+A filter can use the + or # wildcards so
+
+"animals/cats/+" will bridge messages sent to "animals/cats/breeds", "animals/cats/colours" but not "animals/cats/breeds/longhair"
+
+"animals/cats/#" will bridge messages sent to "animals/cats/breeds", "animals/cats/colours", "animals/cats/breeds/longhair", etc
+
+## Commands
+Currently two commands can be sent to the CSVLog bridge:
+
+ROTATEFILE - Triggers an immediate rotation of the log file
+
+REALOADCONFIG - Triggers a reload of the CSVLog config file

plugins/bridge/bridge.go

@@ -0,0 +1,53 @@
+package bridge
+
+import "github.com/fhmq/hmq/logger"
+
+const (
+	//Connect mqtt connect
+	Connect = "connect"
+	//Publish mqtt publish
+	Publish = "publish"
+	//Subscribe mqtt sub
+	Subscribe = "subscribe"
+	//Unsubscribe mqtt sub
+	Unsubscribe = "unsubscribe"
+	//Disconnect mqtt disconenct
+	Disconnect = "disconnect"
+)
+
+var (
+	log = logger.Get().Named("bridge")
+)
+
+//Elements kafka publish elements
+type Elements struct {
+	ClientID  string `json:"clientid"`
+	Username  string `json:"username"`
+	Topic     string `json:"topic"`
+	Payload   string `json:"payload"`
+	Timestamp int64  `json:"ts"`
+	Size      int32  `json:"size"`
+	Action    string `json:"action"`
+}
+
+const (
+	//Kafka plugin name
+	Kafka  = "kafka"
+	CSVLog = "csvlog"
+)
+
+type BridgeMQ interface {
+	// Publish return true to cost the message
+	Publish(e *Elements) (bool, error)
+}
+
+func NewBridgeMQ(name string) BridgeMQ {
+	switch name {
+	case Kafka:
+		return InitKafka()
+	case CSVLog:
+		return InitCSVLog()
+	default:
+		return &mockMQ{}
+	}
+}

plugins/bridge/csvlog.go

@@ -0,0 +1,414 @@
+package bridge
+
+/*
+Copyright (c) 2021, Gary Barnett @thinkovation. Released under the Apache 2 License
+
+CSVLog is a bridge plugin for HMQ that implements CSV logging of messages. See CSVLog.md for more information
+
+*/
+
+import (
+	"encoding/csv"
+	"encoding/json"
+	"errors"
+	"fmt"
+	"io/ioutil"
+	"os"
+	"path/filepath"
+	"sort"
+	"strings"
+	"sync"
+	"time"
+
+	"go.uber.org/zap"
+)
+
+type csvBridgeConfig struct {
+	FileName          string   `json:"fileName"`
+	LogFileMaxSizeMB  int64    `json:"logFileMaxSizeMB"`
+	LogFileMaxFiles   int64    `json:"logFileMaxFiles"`
+	WriteIntervalSecs int64    `json:"writeIntervalSecs"`
+	CommandTopic      string   `json:"commandTopic"`
+	Filters           []string `json:"filters"`
+}
+
+type csvLog struct {
+	config  csvBridgeConfig
+	buffer  []string
+	msgchan chan (*Elements)
+
+	sync.RWMutex
+}
+
+// rotateLog performs a log rotation - copying the current logfile to the base file name plus a timestamp
+func (c *csvLog) rotateLog(withPrune bool) error {
+	c.Lock()
+	filename := c.config.FileName
+	c.Unlock()
+
+	basename := strings.TrimSuffix(filename, filepath.Ext(filename))
+	newpath := basename + time.Now().Format("-20060102T150405") + filepath.Ext(filename)
+	renameError := os.Rename(filename, newpath)
+	if renameError != nil {
+		return renameError
+	}
+	outfile, _ := os.OpenFile(filename, os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0644)
+	outfile.Close()
+	// Whenever we rotate a logfile we prune
+	if withPrune {
+		c.logFilePrune()
+
+	}
+	return nil
+
+}
+
+// writeToLog takes an array of elements and writes them to the logfile (or to log or stdout) spefified in
+// the configuration
+func (c *csvLog) writeToLog(els []Elements) error {
+
+	c.RLock()
+	fname := c.config.FileName
+	c.RUnlock()
+	if fname == "" {
+		fname = "CSVLOG.CSV"
+	}
+
+	if fname == "{LOG}" {
+		for _, value := range els {
+			t := time.Unix(value.Timestamp, 0)
+			log.Info(t.Format("2006-01-02T15:04:05") + " " + value.ClientID + " " + value.Username + " " + value.Action + " " + value.Topic + " " + value.Payload)
+		}
+		return nil
+	}
+	if fname == "{STDOUT}" {
+		for _, value := range els {
+			t := time.Unix(value.Timestamp, 0)
+			fmt.Println(t.Format("2006-01-02T15:04:05") + " " + value.ClientID + " " + value.Username + " " + value.Action + " " + value.Topic + " " + value.Payload)
+		}
+		return nil
+	}
+
+	var mbsize int64
+	fileStat, fileStatErr := os.Stat(fname)
+	if fileStatErr != nil {
+		log.Warn("Could not get CSVLog info. Received Err " + fileStatErr.Error())
+		mbsize = 0
+	} else {
+		mbsize = fileStat.Size() / 1024 / 1024
+	}
+	if mbsize > c.config.LogFileMaxSizeMB && c.config.LogFileMaxSizeMB != 0 {
+		rotateErr := c.rotateLog(true)
+		if rotateErr != nil {
+			log.Warn("Unable to rotate outputfile")
+		}
+	}
+	outfile, outfileOpenError := os.OpenFile(fname, os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0644)
+	defer outfile.Close()
+	if outfileOpenError != nil {
+		log.Warn("Could not open CSV Log file to write")
+		return errors.New("Could not write to CSV Log File")
+	}
+
+	writer := csv.NewWriter(outfile)
+	defer writer.Flush()
+
+	for _, value := range els {
+		t := time.Unix(value.Timestamp, 0)
+		var outrow = []string{t.Format("2006-01-02T15:04:05"), value.ClientID, value.Username, value.Action, value.Topic, value.Payload}
+		writeOutRowError := writer.Write(outrow)
+		if writeOutRowError != nil {
+			log.Warn("Could not write msg to CSV Log")
+		}
+	}
+	return nil
+
+}
+
+// Worker should be invoked as a goroutine - It listens on the csvlog message channel for incoming messages
+// for performance we batch messages into an outqueue and write them in bulk when a timer expires
+func (c *csvLog) Worker() {
+	log.Info("Running CSVLog worker")
+	var outqueue []Elements
+
+	for true {
+		c.RLock()
+		waitInterval := c.config.WriteIntervalSecs
+		c.RUnlock()
+
+		timer := time.NewTimer(time.Second * time.Duration(waitInterval))
+
+		select {
+
+		case p := <-c.msgchan:
+			c.RLock()
+
+			oktopublish := false
+
+			// Check to see if any filters are defined. If there are none we assume we're logging everything
+			if len(c.config.Filters) != 0 {
+				// We pick up a Read lock here to parse the c.config.Filters string array
+				// as it's a read lock, and write locks will be rare
+				// it feels as if this will be fine.
+				// If there is contention, it _might_ make sense to quickly lock c, get
+				// the filters and release the lock, then process the filters with no locks
+				// but I think it's unlikely
+
+				for _, filt := range c.config.Filters {
+					if topicMatch(p.Topic, filt) {
+						oktopublish = true
+						break
+
+					}
+
+				}
+
+			} else {
+				oktopublish = true
+			}
+			if oktopublish {
+				var el Elements
+				el.Action = p.Action
+				el.ClientID = p.ClientID
+				el.Payload = p.Payload
+				el.Size = p.Size
+				el.Timestamp = p.Timestamp
+				el.Topic = p.Topic
+				el.Username = p.Username
+				outqueue = append(outqueue, el)
+			}
+			c.RUnlock()
+			break
+		case <-timer.C:
+			if len(outqueue) > 0 {
+				writeResult := c.writeToLog(outqueue)
+				if writeResult != nil {
+					log.Warn("Trouble writing to CSV Log")
+				}
+				outqueue = nil
+
+			}
+			break
+		}
+
+	}
+}
+
+// LoadCSVLogConfig loads the configuration file - it currently looks in
+// "./plugins/csvlog/csvlogconfig.json" (following the example of the default location of the kafka plugin config file)
+// if it doesn't find it there it looks in two further places - the current directory and
+// an "assets" folder under the current directory (This is for compatibility with a couple of deployed)
+// implementations.
+func LoadCSVLogConfig() csvBridgeConfig {
+	// Check to see if the CSVLOGCONFFILE environment variable is set and if so
+	// check that it does actually point to a file
+	csvLogConfigFile := os.Getenv("CSVLOGCONFFILE")
+	if csvLogConfigFile != "" {
+		if _, err := os.Stat(csvLogConfigFile); os.IsNotExist(err) {
+			csvLogConfigFile = ""
+		}
+	}
+	// If csvLogConfigFile is blank look in the plugins directory,
+	// then the current directory for the csvLogConfigFile. If it's still not found we use a default config
+	// If the file does not exist, we use default parameters
+	if csvLogConfigFile == "" {
+		csvLogConfigFile = "./plugins/csvlog/csvlogconfig.json"
+	}
+	if _, err := os.Stat(csvLogConfigFile); os.IsNotExist(err) {
+
+		if _, err := os.Stat("csvlogconfig.json"); os.IsNotExist(err) {
+			csvLogConfigFile = ""
+		} else {
+			csvLogConfigFile = "csvlogconfig.json"
+		}
+	}
+
+	var configUnmarshalErr error
+	var config csvBridgeConfig
+	if csvLogConfigFile != "" {
+		log.Info("Trying to load config file from " + csvLogConfigFile)
+		content, err := ioutil.ReadFile(csvLogConfigFile)
+		if err != nil {
+			log.Info("Read config file error: ", zap.Error(err))
+		}
+		configUnmarshalErr = json.Unmarshal(content, &config)
+	}
+
+	if configUnmarshalErr != nil || config.FileName == "" {
+		log.Warn("Unable to load csvlog config file, so using default settings")
+		config.FileName = "/var/log/csvlog.log"
+		config.CommandTopic = "CSVLOG/command"
+		config.WriteIntervalSecs = 10
+		config.LogFileMaxSizeMB = 1
+		config.LogFileMaxFiles = 4
+
+	}
+	return config
+
+}
+
+// InitCSVLog initialises a CSVLOG plugin
+// It does this by loading a config file if one can be found. The default filename follows the same
+// convention as the kafka plugin - ie it's in "./plugins/csvlog/csvlogconfig.json" but an
+// environment var - CSVLOGCONFFILE - can be set to provide a different location.
+//
+// Once the config is set the worker is started
+func InitCSVLog() *csvLog {
+	log.Info("Trying to init CSVLOG")
+
+	c := &csvLog{config: LoadCSVLogConfig()}
+	c.msgchan = make(chan *Elements, 200)
+	//Start the csvlog worker
+	go c.Worker()
+	return c
+
+}
+
+// topicMatch accepts a topic name and a filter string, it then evaluates the
+// topic against the filter string and returns true if there is a match.
+//
+// The CSV bridge can be configured with 0, 1 or more filters - Where there are no
+// filters specified, every message will be re-published. Where there are filters, any message
+// that passes any of the filter tests will be re-published.
+func topicMatch(topic string, filter string) bool {
+	if topic == filter || filter == "#" {
+		return true
+	}
+	topicComponents := strings.Split(topic, "/")
+	filterComponents := strings.Split(filter, "/")
+	currentpos := 0
+	filterComponentsLength := len(filterComponents)
+	currentFilterComponent := ""
+	if filterComponentsLength > 0 {
+		currentFilterComponent = filterComponents[currentpos]
+	}
+	for _, topicVal := range topicComponents {
+		if currentFilterComponent == "" {
+			return false
+		}
+		if currentFilterComponent == "#" {
+			return true
+		}
+		if currentFilterComponent != "+" && currentFilterComponent != topicVal {
+			return false
+		}
+		currentpos++
+		if filterComponentsLength > currentpos {
+			currentFilterComponent = filterComponents[currentpos]
+		} else {
+			currentFilterComponent = ""
+		}
+	}
+	return true
+}
+
+// logFilePrune checks the number of rotated logfiles and prunes them
+func (c *csvLog) logFilePrune() error {
+
+	// List the rotated files
+	c.RLock()
+	filename := c.config.FileName
+	maxfiles := c.config.LogFileMaxFiles
+	c.RUnlock()
+	if maxfiles == 0 {
+		return nil
+	}
+
+	fileExt := filepath.Ext(filename)
+	fileDir := filepath.Dir(filename)
+	baseFileName := strings.TrimSuffix(filepath.Base(filename), fileExt)
+
+	files, err := ioutil.ReadDir(fileDir)
+	if err != nil {
+		return err
+	}
+
+	var foundFiles []string
+	for _, file := range files {
+		if strings.HasPrefix(file.Name(), baseFileName+"-") {
+
+			foundFiles = append(foundFiles, file.Name())
+
+		}
+	}
+	if len(foundFiles) >= int(maxfiles) {
+		fmt.Println("Found ", len(foundFiles), " files")
+		sort.Strings(foundFiles)
+		for i := 0; i < len(foundFiles)-int(maxfiles); i++ {
+			fileDeleteError := os.Remove(fileDir + "//" + foundFiles[i])
+			log.Info("Pruning logfile " + fileDir + "//" + foundFiles[i])
+			if fileDeleteError != nil {
+				log.Warn("Could not delete file " + fileDir + "//" + foundFiles[i])
+
+			}
+
+		}
+
+	}
+
+	return nil
+
+}
+
+// Publish implements the bridge interface - it accepts an Element then checks to see if that element is a
+// message published to the admin topic for the plugin
+//
+func (c *csvLog) Publish(e *Elements) (bool, error) {
+	// A short-lived lock on c allows us to
+	// get the Command topic then release the lock
+	// This then allows us to process the command - which may
+	// take its a write lock on c (to update values) and then
+	// return here where we'll pick up a
+	// read lock to iterate over the c.config.filters
+	// We're trying to minimise the time spent in this function
+	// and to limit the overall time spent in any write locks.
+	c.RLock()
+	//CSVLOG allows you to configure a CommandTopic which is a topic to which commands affecting the behaviour of CSVLog can be sent
+	//The simplest would be a message with a payload of "RELOAD" which will reload the configuration allowing configuration changes to be
+	//made at runtime without restarting the broker
+	CommandTopic := c.config.CommandTopic
+	OutFile := c.config.FileName
+	c.RUnlock()
+	// If the outfile is set to "{NULL}" we don't do anything with the message - we just return nil
+	// This feature is here to allow CSVLOG to be enabled/disabled at runtime
+	if OutFile == "{NULL}" {
+		return false, nil
+	}
+
+	if e.Topic == CommandTopic {
+
+		log.Info("CSVLOG Command Received")
+
+		// Process Command
+		// These are going to be rare ocurrences, so in this implementation
+		// we will process the command here - but if we _really_ want to
+		// squeeze delays out, we could have a worker sitting on a
+		// command channel processing any commands.
+		if e.Payload == "RELOADCONFIG" {
+			newConfig := LoadCSVLogConfig()
+			c.Lock()
+			c.config = newConfig
+			c.Unlock()
+
+		}
+		if e.Payload == "ROTATEFILE" {
+
+			c.rotateLog(true)
+
+		}
+		if e.Payload == "ROTATEFILENOPRUNE" {
+
+			c.rotateLog(false)
+
+		}
+		// We could return without doing anything more here, but
+		// for now we move ahead with the filter processing on the
+		// basis that unless we either filter for "all" (with #) or
+		// filter for the CommandTopic, they won't be logged - but we
+		// may have a reason for wanting to track commands too
+	}
+	// Push the message into the channel and return
+	// the channel is buffered and is read by a goroutine so this should block for the shortest possible time
+	c.msgchan <- e
+	return false, nil
+}

plugins/bridge/csvlog_test.go

@@ -0,0 +1,36 @@
+package bridge
+
+import (
+	"fmt"
+	"testing"
+)
+
+//Test_topicMatch is here to double check the topic matching logic
+func Test_topicMatch(t *testing.T) {
+
+	tests := []struct {
+		name   string
+		topic  string
+		filter string
+		want   bool
+	}{
+		// Some sample test cases
+		{name: "Simple", topic: "test", filter: "test", want: true},
+		{name: "Simple", topic: "test/cat", filter: "test/+", want: true},
+		{name: "Simple", topic: "test/cat/breed", filter: "test/+", want: false},
+		{name: "Simple", topic: "test/cat", filter: "test/#", want: true},
+		{name: "Simple", topic: "test/cat/banana", filter: "test/#", want: true},
+		{name: "Simple", topic: "test/cat/banana", filter: "test/+", want: false},
+		{name: "Simple", topic: "test/dog/banana", filter: "test/cat/+", want: false},
+		{name: "Simple", topic: "test/cat/banana", filter: "test/+/banana", want: true},
+	}
+
+	for _, tt := range tests {
+		fmt.Println(tt)
+		t.Run(tt.name, func(t *testing.T) {
+			if got := topicMatch(tt.topic, tt.filter); got != tt.want {
+				t.Errorf("topicMatch() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+}

plugins/bridge/kafka.go

@@ -0,0 +1,156 @@
+package bridge
+
+import (
+	"encoding/json"
+	"errors"
+	"io/ioutil"
+	"strings"
+	"time"
+
+	"github.com/Shopify/sarama"
+	"go.uber.org/zap"
+)
+
+type kafkaConfig struct {
+	Addr             []string          `json:"addr"`
+	ConnectTopic     string            `json:"onConnect"`
+	SubscribeTopic   string            `json:"onSubscribe"`
+	PublishTopic     string            `json:"onPublish"`
+	UnsubscribeTopic string            `json:"onUnsubscribe"`
+	DisconnectTopic  string            `json:"onDisconnect"`
+	DeliverMap       map[string]string `json:"deliverMap"`
+}
+
+type kafka struct {
+	kafkaConfig kafkaConfig
+	kafkaClient sarama.AsyncProducer
+}
+
+// InitKafka Init kafka client
+func InitKafka() *kafka {
+	log.Info("start connect kafka....")
+	content, err := ioutil.ReadFile("./plugins/kafka/kafka.json")
+	if err != nil {
+		log.Fatal("Read config file error: ", zap.Error(err))
+	}
+	// log.Info(string(content))
+	var config kafkaConfig
+	err = json.Unmarshal(content, &config)
+	if err != nil {
+		log.Fatal("Unmarshal config file error: ", zap.Error(err))
+	}
+	c := &kafka{kafkaConfig: config}
+	c.connect()
+	return c
+}
+
+//connect
+func (k *kafka) connect() {
+	conf := sarama.NewConfig()
+	conf.Version = sarama.V1_1_1_0
+	kafkaClient, err := sarama.NewAsyncProducer(k.kafkaConfig.Addr, conf)
+	if err != nil {
+		log.Fatal("create kafka async producer failed: ", zap.Error(err))
+	}
+
+	go func() {
+		for err := range kafkaClient.Errors() {
+			log.Error("send msg to kafka failed: ", zap.Error(err))
+		}
+	}()
+
+	k.kafkaClient = kafkaClient
+}
+
+//Publish publish to kafka
+func (k *kafka) Publish(e *Elements) (bool, error) {
+	config := k.kafkaConfig
+	key := e.ClientID
+	topics := make(map[string]bool)
+	switch e.Action {
+	case Connect:
+		if config.ConnectTopic != "" {
+			topics[config.ConnectTopic] = true
+		}
+	case Publish:
+		if config.PublishTopic != "" {
+			topics[config.PublishTopic] = true
+		}
+		// foreach regexp map config
+		for reg, topic := range config.DeliverMap {
+			match := matchTopic(reg, e.Topic)
+			if match {
+				topics[topic] = true
+			}
+		}
+	case Subscribe:
+		if config.SubscribeTopic != "" {
+			topics[config.SubscribeTopic] = true
+		}
+	case Unsubscribe:
+		if config.UnsubscribeTopic != "" {
+			topics[config.UnsubscribeTopic] = true
+		}
+	case Disconnect:
+		if config.DisconnectTopic != "" {
+			topics[config.DisconnectTopic] = true
+		}
+	default:
+		return false, errors.New("error action: " + e.Action)
+	}
+
+	return false, k.publish(topics, key, e)
+
+}
+
+func (k *kafka) publish(topics map[string]bool, key string, msg *Elements) error {
+	payload, err := json.Marshal(msg)
+	if err != nil {
+		return err
+	}
+
+	for topic, _ := range topics {
+		select {
+		case k.kafkaClient.Input() <- &sarama.ProducerMessage{
+			Topic: topic,
+			Key:   sarama.ByteEncoder(key),
+			Value: sarama.ByteEncoder(payload),
+		}:
+			continue
+		case <-time.After(5 * time.Second):
+			return errors.New("write kafka timeout")
+		}
+
+	}
+
+	return nil
+}
+
+func match(subTopic []string, topic []string) bool {
+	if len(subTopic) == 0 {
+		if len(topic) == 0 {
+			return true
+		}
+		return false
+	}
+
+	if len(topic) == 0 {
+		if subTopic[0] == "#" {
+			return true
+		}
+		return false
+	}
+
+	if subTopic[0] == "#" {
+		return true
+	}
+
+	if (subTopic[0] == "+") || (subTopic[0] == topic[0]) {
+		return match(subTopic[1:], topic[1:])
+	}
+	return false
+}
+
+func matchTopic(subTopic string, topic string) bool {
+	return match(strings.Split(subTopic, "/"), strings.Split(topic, "/"))
+}

plugins/bridge/kafka/kafka.json

@@ -0,0 +1,14 @@
+{
+    "addr": [
+        "127.0.0.1:9090"
+    ],
+    "onConnect": "onConnect",
+    "onPublish": "onPublish",
+    "onSubscribe": "onSubscribe",
+    "onDisconnect": "onDisconnect",
+    "onUnsubscribe": "onUnsubscribe",
+    "deliverMap": {
+        "#": "publish",
+        "/upload/+/#": "upload"
+    }
+}

plugins/bridge/mock.go

@@ -0,0 +1,7 @@
+package bridge
+
+type mockMQ struct{}
+
+func (m *mockMQ) Publish(e *Elements) (bool, error) {
+	return false, nil
+}

pool/fixpool.go

@@ -0,0 +1,56 @@
+package pool
+
+import (
+	"github.com/cespare/xxhash/v2"
+)
+
+type WorkerPool struct {
+	maxWorkers  int
+	taskQueue   []chan func()
+	stoppedChan chan struct{}
+}
+
+func New(maxWorkers int) *WorkerPool {
+	// There must be at least one worker.
+	if maxWorkers < 1 {
+		maxWorkers = 1
+	}
+
+	// taskQueue is unbuffered since items are always removed immediately.
+	pool := &WorkerPool{
+		taskQueue:   make([]chan func(), maxWorkers),
+		maxWorkers:  maxWorkers,
+		stoppedChan: make(chan struct{}),
+	}
+	// Start the task dispatcher.
+	pool.dispatch()
+
+	return pool
+}
+
+func (p *WorkerPool) Submit(uid string, task func()) {
+	idx := xxhash.Sum64([]byte(uid)) % uint64(p.maxWorkers)
+	if task != nil {
+		p.taskQueue[idx] <- task
+	}
+}
+
+func (p *WorkerPool) dispatch() {
+	for i := 0; i < p.maxWorkers; i++ {
+		p.taskQueue[i] = make(chan func(), 1024)
+		go startWorker(p.taskQueue[i])
+	}
+}
+
+func startWorker(taskChan chan func()) {
+	var task func()
+	var ok bool
+	for {
+		task, ok = <-taskChan
+		if !ok {
+			break
+		}
+		// Execute the task.
+		task()
+	}
+}

pool/pool.go

@@ -1,166 +0,0 @@
-package pool
-
-import "time"
-
-const (
-	// This value is the size of the queue that workers register their
-	// availability to the dispatcher.  There may be hundreds of workers, but
-	// only a small channel is needed to register some of the workers.
-	readyQueueSize = 16
-
-	// If worker pool receives no new work for this period of time, then stop
-	// a worker goroutine.
-	idleTimeoutSec = 5
-)
-
-type WorkerPool struct {
-	maxWorkers   int
-	timeout      time.Duration
-	taskQueue    chan func()
-	readyWorkers chan chan func()
-	stoppedChan  chan struct{}
-}
-
-func New(maxWorkers int) *WorkerPool {
-	// There must be at least one worker.
-	if maxWorkers < 1 {
-		maxWorkers = 1
-	}
-
-	// taskQueue is unbuffered since items are always removed immediately.
-	pool := &WorkerPool{
-		taskQueue:    make(chan func()),
-		maxWorkers:   maxWorkers,
-		readyWorkers: make(chan chan func(), readyQueueSize),
-		timeout:      time.Second * idleTimeoutSec,
-		stoppedChan:  make(chan struct{}),
-	}
-
-	// Start the task dispatcher.
-	go pool.dispatch()
-
-	return pool
-}
-
-func (p *WorkerPool) Stop() {
-	if p.Stopped() {
-		return
-	}
-	close(p.taskQueue)
-	<-p.stoppedChan
-}
-
-func (p *WorkerPool) Stopped() bool {
-	select {
-	case <-p.stoppedChan:
-		return true
-	default:
-	}
-	return false
-}
-
-func (p *WorkerPool) Submit(task func()) {
-	if task != nil {
-		p.taskQueue <- task
-	}
-}
-
-func (p *WorkerPool) SubmitWait(task func()) {
-	if task == nil {
-		return
-	}
-	doneChan := make(chan struct{})
-	p.taskQueue <- func() {
-		task()
-		close(doneChan)
-	}
-	<-doneChan
-}
-
-func (p *WorkerPool) dispatch() {
-	defer close(p.stoppedChan)
-	timeout := time.NewTimer(p.timeout)
-	var workerCount int
-	var task func()
-	var ok bool
-	var workerTaskChan chan func()
-	startReady := make(chan chan func())
-Loop:
-	for {
-		timeout.Reset(p.timeout)
-		select {
-		case task, ok = <-p.taskQueue:
-			if !ok {
-				break Loop
-			}
-			// Got a task to do.
-			select {
-			case workerTaskChan = <-p.readyWorkers:
-				// A worker is ready, so give task to worker.
-				workerTaskChan <- task
-			default:
-				// No workers ready.
-				// Create a new worker, if not at max.
-				if workerCount < p.maxWorkers {
-					workerCount++
-					go func(t func()) {
-						startWorker(startReady, p.readyWorkers)
-						// Submit the task when the new worker.
-						taskChan := <-startReady
-						taskChan <- t
-					}(task)
-				} else {
-					// Start a goroutine to submit the task when an existing
-					// worker is ready.
-					go func(t func()) {
-						taskChan := <-p.readyWorkers
-						taskChan <- t
-					}(task)
-				}
-			}
-		case <-timeout.C:
-			// Timed out waiting for work to arrive.  Kill a ready worker.
-			if workerCount > 0 {
-				select {
-				case workerTaskChan = <-p.readyWorkers:
-					// A worker is ready, so kill.
-					close(workerTaskChan)
-					workerCount--
-				default:
-					// No work, but no ready workers.  All workers are busy.
-				}
-			}
-		}
-	}
-
-	// Stop all remaining workers as they become ready.
-	for workerCount > 0 {
-		workerTaskChan = <-p.readyWorkers
-		close(workerTaskChan)
-		workerCount--
-	}
-}
-
-func startWorker(startReady, readyWorkers chan chan func()) {
-	go func() {
-		taskChan := make(chan func())
-		var task func()
-		var ok bool
-		// Register availability on starReady channel.
-		startReady <- taskChan
-		for {
-			// Read task from dispatcher.
-			task, ok = <-taskChan
-			if !ok {
-				// Dispatcher has told worker to stop.
-				break
-			}
-
-			// Execute the task.
-			task()
-
-			// Register availability on readyWorkers channel.
-			readyWorkers <- taskChan
-		}
-	}()
-}