How to use publishMessages method of mqtt Package

Best Venom code snippet using mqtt.publishMessages

mqtt.go

Source:mqtt.go Github

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...79 }80 var err error81 switch e.ClientType {82 case "publisher":83 err = e.publishMessages(ctx)84 if err != nil {85 result.Err = err.Error()86 }87 case "persistent_queue":88 err = e.persistMessages(ctx)89 if err != nil {90 result.Err = err.Error()91 }92 case "subscriber":93 result.Messages, result.MessagesJSON, result.Topics, err = e.consumeMessages(ctx)94 if err != nil {95 result.Err = err.Error()96 }97 default:98 return nil, fmt.Errorf("clientType %q must be publisher, subscriber or persistent_queue", e.ClientType)99 }100 elapsed := time.Since(start)101 result.TimeSeconds = elapsed.Seconds()102 return result, nil103}104// session prepares a client connection returning a client and a possible error105func (e Executor) session(ctx context.Context, subscriber func(client mq.Client, message mq.Message)) (mq.Client, error) {106 venom.Debug(ctx, "creating session to %v, cleanSession: %v, clientID: %v", e.Addrs, !e.PersistSubscription, e.ClientID)107 opts := mq.NewClientOptions().108 AddBroker(e.Addrs).109 SetConnectTimeout(time.Duration(e.ConnectTimeout) * time.Millisecond).110 SetCleanSession(!e.PersistSubscription).111 SetClientID(e.ClientID).112 SetProtocolVersion(mqttV311).113 SetOnConnectHandler(func(client mq.Client) {114 venom.Debug(ctx, "connection handler called. IsConnected: %v", client.IsConnected())115 })116 client := mq.NewClient(opts)117 // MQTT may send messages prior to a subscription taking place (due to pre-existing persistent session).118 // We cannot subscribe without a connection so we register a route and subscribe later119 if subscriber != nil {120 venom.Debug(ctx, "adding routes: %v", e.Topics)121 for _, topic := range e.Topics {122 client.AddRoute(topic, subscriber)123 }124 }125 token := client.Connect()126 select {127 case <-token.Done():128 if token.Error() != nil {129 venom.Debug(ctx, "connection setup failed")130 return nil, errors.Wrap(token.Error(), "failed to connect to MQTT")131 }132 // else connection complete, all good.133 case <-time.After(time.Duration(e.Timeout) * time.Millisecond):134 venom.Debug(ctx, "connection timeout")135 return nil, errors.Wrap(token.Error(), "failed to connect to MQTT")136 case <-ctx.Done():137 venom.Debug(ctx, "Context requested cancellation in session()")138 return nil, errors.New("Context requested cancellation in session()")139 }140 venom.Debug(ctx, "connection setup completed")141 return client, nil142}143// publishMessages is a step that sends configured messages to client connection144func (e Executor) publishMessages(ctx context.Context) error {145 client, err := e.session(ctx, nil)146 if err != nil {147 venom.Debug(ctx, "Failed to create session (publishMessages)")148 return err149 }150 defer client.Disconnect(disconnectTimeoutMs)151 for i, m := range e.Messages {152 if len(m.Topic) == 0 {153 return errors.Errorf("mandatory field Topic was empty in Messages[%v](%v)", i, m)154 }155 token := client.Publish(m.Topic, m.QOS, m.Retained, m.Payload)156 select {157 case <-token.Done():158 if token.Error() != nil {159 venom.Debug(ctx, "Message publish failed")160 return errors.Wrapf(token.Error(), "Message publish failed: Messages[%v](%v)", i, m)161 }162 // else publish complete, all good.163 case <-time.After(time.Duration(e.Timeout) * time.Millisecond):164 venom.Debug(ctx, "Publish attempt timed out")165 return errors.Errorf("Publish attempt timed out on topic %v", m.Topic)166 case <-ctx.Done():167 venom.Debug(ctx, "Context requested cancellation in publishMessages()")168 return errors.New("Context requested cancellation in publishMessages()")169 }170 venom.Debug(ctx, "Message[%v] %q sent (topic: %q)", i, m.Payload, m.Topic)171 }172 return nil173}174// consumeMessages is a step to consume messages from mqtt broker using client connection175func (e Executor) consumeMessages(ctx context.Context) (messages []interface{}, messagesJSON []interface{}, topics []string, err error) {176 ch := make(chan mq.Message, 1)177 defer close(ch)178 subscriber := newSubscriber(ctx, ch)179 client, err := e.session(ctx, subscriber)180 if err != nil {181 venom.Debug(ctx, "Failed to create session (consumeMessages)")182 return nil, nil, nil, err...

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server_tester.go

Source:server_tester.go Github

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...30}31func main() {32 initUser(testUsername, testPassword)33 startClient(testUserID, testUsername, testPassword, loadTLSConfig())34 publishMessages()35 watch()36}37func loadTLSConfig() *tls.Config {38 cert, err := tls.LoadX509KeyPair(clientCertFile, clientKeyFile)39 if err != nil {40 logger.Fatal("Load tls file", zap.Error(err))41 }42 return &tls.Config{43 ClientAuth: tls.NoClientCert,44 InsecureSkipVerify: true,45 Certificates: []tls.Certificate{cert},46 }47}48func onMessageReceived(client MQTT.Client, message MQTT.Message) {49 logger.Info("Received message", zap.String("topic", message.Topic()), zap.ByteString("payload", message.Payload()))50}51func initUser(username, password string) {52 address := fmt.Sprintf("%s:%d", agentHost, agentGrpcPort)53 cc, err := grpc.Dial(address, grpc.WithInsecure())54 if err != nil {55 logger.Fatal("Grpc connect", zap.Error(err))56 }57 // Create user58 userClient := NewUserSvcClient(cc)59 _, err = userClient.Add(context.Background(), &AddUserRequest{60 Id: testUserID,61 Username: username,62 Password: password,63 Ip: "",64 })65 if err != nil {66 logger.Fatal("Create user", zap.Error(err))67 }68 // Join group69 groupClient := NewGroupSvcClient(cc)70 _, err = groupClient.AddMembers(context.Background(), &AddMembersRequest{71 GroupId: testGroupID,72 Members: []string{testUserID},73 })74 if err != nil {75 logger.Fatal("Join group", zap.Error(err))76 }77}78func startClient(clientID, username, password string, tlsConfig *tls.Config) {79 connectC := make(chan struct{})80 connOpts := MQTT.81 NewClientOptions().82 AddBroker(server).83 SetClientID(clientID).84 SetCleanSession(true).85 SetUsername(username).86 SetPassword(password)87 if tlsConfig != nil {88 connOpts.SetTLSConfig(tlsConfig)89 }90 connOpts.OnConnect = func(c MQTT.Client) {91 logger.Info("Connect", zap.String("clientID", clientID))92 connectC <- struct{}{}93 }94 connOpts.OnConnectionLost = func(client MQTT.Client, err error) {95 logger.Info("Connection lost", zap.Error(err))96 }97 client := MQTT.NewClient(connOpts)98 token := client.Connect()99 token.Wait()100 if err := token.Error(); err != nil {101 logger.Error("Connect", zap.Error(err))102 }103 logger.Info("Connect...")104 <-connectC105 topics := []string{106 "u/" + clientID,107 "g/" + testGroupID,108 "p/" + clientID,109 }110 var qos byte = 1111 for _, topic := range topics {112 token := client.Subscribe(topic, qos, onMessageReceived)113 token.Wait()114 if err := token.Error(); err != nil {115 logger.Error("Subscribe", zap.Error(err))116 }117 }118}119func publishMessages() {120 address := fmt.Sprintf("%s:%d", agentHost, agentGrpcPort)121 cc, err := grpc.Dial(address, grpc.WithInsecure())122 if err != nil {123 logger.Fatal("Grpc connect", zap.Error(err))124 }125 // Publish user message126 imClient := NewIMSvcClient(cc)127 _, err = imClient.Publish(context.Background(), &PublishRequest{128 Topic: "u/" + testUserID,129 Payload: time.Now().Format("2006-01-02 15:04:05.999999999"),130 Qos: 1,131 Retained: false,132 })133 if err != nil {...

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worker.go

Source:worker.go Github

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...34func (w *Worker) RunConcurrentlyPublishingClients(simReq *SimulationRequest) (string, error) {35 fmt.Printf("Initializing %d concurrent mqtt clients\n", simReq.ClientCount)36 executionDuration := ConcurrentWorkerExecutor(simReq.ClientCount, w.MaxConnectionRequestsPerSecond, func(thingId int) error {37 clientId := simReq.StartClientNumber + thingId38 if err := w.publishMessages(clientId, simReq); err != nil {39 fmt.Printf("Failed to publish messages: %v\n", err)40 }41 return nil42 })43 return fmt.Sprintf("Simulation complete. Total Execution time: %v", executionDuration), nil44}45func (w *Worker) publishMessages(clientNumber int, simReq *SimulationRequest) error {46 clientID := fmt.Sprintf("%s-%d", w.ClientIDPrefix, clientNumber)47 //TODO - allow for topic to be injected with support for placeholders48 topic := fmt.Sprintf("%s/%s", w.TopicPrefix, clientID)49 mqttClient := mqtt.NewClient(w.MqttHost, w.MqttPort, clientID, w.tlsConfig)50 if token := mqttClient.Connect(); token.Wait() && token.Error() != nil {51 return fmt.Errorf("[%s] Failed to get connection token: %s", clientID, token.Error().Error())52 }53 log.Printf("[%s] Connected\n", clientID)54 for messageNumber := 1; messageNumber <= simReq.MessagesPerClient; messageNumber++ {55 //TODO - allow for the message to be injected from SimulationRequest with support for dynamic ranges56 payload := map[string]interface{}{57 "message_number": messageNumber,58 "client_id": clientID,59 "timestamp": time.Now().Format(time.RFC3339),...

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publishMessages

Using AI Code Generation

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1import (2func main() {3 mqttClient = mqtt.NewClient(mqtt.NewClientOptions())4 mqttClient.Connect()5 mqttClient.PublishMessages("topic1", "message1")6 fmt.Println("message published")7}8import (9func main() {10 mqttClient = mqtt.NewClient(mqtt.NewClientOptions())11 mqttClient.Connect()12 mqttClient.Publish("topic1", "message1")13 fmt.Println("message published")14}15import (16func main() {17 mqttClient = mqtt.NewClient(mqtt.NewClientOptions())18 mqttClient.Connect()19 mqttClient.Publish("topic1", "message1")20 fmt.Println("message published")21}22import (23func main() {24 mqttClient = mqtt.NewClient(mqtt.NewClientOptions())25 mqttClient.Connect()26 mqttClient.Publish("topic1", "message1")27 fmt.Println("message published")28}29import (30func main() {31 mqttClient = mqtt.NewClient(mqtt.NewClientOptions())32 mqttClient.Connect()33 mqttClient.Publish("topic1", "message1")34 fmt.Println("message published")35}36import (37func main() {38 mqttClient = mqtt.NewClient(mqtt.NewClientOptions())39 mqttClient.Connect()

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publishMessages

Using AI Code Generation

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1import (2const (3func main() {4 fmt.Println("Starting the application...")5 c := mqtt.NewClient(mqtt.NewClientOptions().AddBroker(broker))6 if token := c.Connect(); token.Wait() && token.Error() != nil {7 panic(token.Error())8 }9 fmt.Println("Connected to the broker")10 for i := 0; i < 10; i++ {11 text := "This is message number " + strconv.Itoa(i)12 token := c.Publish(topic, 0, false, text)13 token.Wait()14 fmt.Println("Published message: ", text)15 time.Sleep(1 * time.Second)16 }17 c.Disconnect(250)18 fmt.Println("Application stopped")19}20import (21const (22func main() {23 fmt.Println("Starting the application...")24 c := mqtt.NewClient(mqtt.NewClientOptions().AddBroker(broker))25 if token := c.Connect(); token.Wait() && token.Error() != nil {26 panic(token.Error())27 }28 fmt.Println("Connected to the broker")29 if token := c.Subscribe(topic, 0, nil); token.Wait() && token.Error() != nil {30 fmt.Println(token.Error())31 os.Exit(1)32 }33 fmt.Println("Subscribed to the topic")34 time.Sleep(3 * time.Second)35 c.Disconnect(250)36 fmt.Println("Application stopped")37}38import (39const (40func main() {41 fmt.Println("Starting the application...")42 c := mqtt.NewClient(mqtt.NewClientOptions().AddBroker(broker))43 if token := c.Connect();

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publishMessages

Using AI Code Generation

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1import (2func main() {3 fmt.Println("Hello World")4 mqttObj.PublishMessages("topic", "message")5}6import (7func main() {8 fmt.Println("Hello World")9 mqttObj.Subscribe("topic", 1, func(client mqtt.Client, message mqtt.Message) {10 fmt.Println("Received message: ", string(message.Payload()), " on topic: ", message.Topic(), " with QoS: ", message.Qos())11 })12}13import (14func main() {15 fmt.Println("Hello World")16 mqttObj.Subscribe("topic", 1, func(client mqtt.Client, message mqtt.Message) {17 fmt.Println("Received message: ", string(message.Payload()), " on topic: ", message.Topic(), " with QoS: ", message.Qos())18 })19}20import (21func main() {22 fmt.Println("Hello World")23 mqttObj.Subscribe("topic", 1, func(client mqtt.Client, message mqtt.Message) {24 fmt.Println("Received message: ", string(message.Payload()), " on topic: ", message.Topic(), " with QoS: ", message.Qos())25 })26}27import (28func main() {

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publishMessages

Using AI Code Generation

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1import (2func main() {3 fmt.Println("Hello World")4 mqtt.Connect()5 mqtt.Publish("test", "test")6 time.Sleep(5 * time.Second)7}8import (9func main() {10 fmt.Println("Hello World")11 mqtt.Connect()12 mqtt.Publish("test", "test")13 time.Sleep(5 * time.Second)14}15import (16func main() {17 fmt.Println("Hello World")18 mqtt.Connect()19 mqtt.Publish("test", "test")20 time.Sleep(5 * time.Second)21}22import (23func main() {24 fmt.Println("Hello World")25 mqtt.Connect()26 mqtt.Publish("test", "test")27 time.Sleep(5 * time.Second)28}29import (30func main() {31 fmt.Println("Hello World")32 mqtt.Connect()33 mqtt.Publish("test", "test")34 time.Sleep(5 * time.Second)35}

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publishMessages

Using AI Code Generation

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1import (2func main() {3 mqtt = mqtt.Mqtt{}4 mqtt.PublishMessages("test", "test")5 fmt.Println("Hello, playground")6}7import (8type Mqtt struct {9}10func (m Mqtt) PublishMessages(topic string, message string) {11 opts.SetClientID("go-simple")12 opts.SetDefaultPublishHandler(f)13 c := MQTT.NewClient(opts)14 if token := c.Connect(); token.Wait() && token.Error() != nil {15 panic(token.Error())16 }17 if token := c.Publish(topic, 0, false, message); token.Wait() && token.Error() != nil {18 fmt.Println(token.Error())19 }20 c.Disconnect(250)21}22func f(client MQTT.Client, msg MQTT.Message) {23 fmt.Printf("TOPIC: %s\n", msg.Topic())24 fmt.Printf("MSG: %s\n", msg.Payload())25}26import (27func main() {28 mqtt = mqtt.Mqtt{}29 mqtt.SubscribeMessages("test")30 fmt.Println("Hello, playground")31}32import (33type Mqtt struct {34}35func (m Mqtt) SubscribeMessages(topic string) {36 opts.SetClientID("go-simple")37 opts.SetDefaultPublishHandler(f)38 c := MQTT.NewClient(opts)39 if token := c.Connect(); token.Wait() && token.Error() != nil {40 panic(token.Error())41 }42 if token := c.Subscribe(topic, 0, nil); token.Wait() && token.Error() != nil {43 fmt.Println(token.Error())44 }45}46func f(client MQTT.Client, msg MQTT.Message) {47 fmt.Printf("TOPIC: %s\n",

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publishMessages

Using AI Code Generation

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1import (2func main() {3 mqtt := Mqtt{4 }5 mqtt.Connect()6 for i := 0; i < 100; i++ {7 mqtt.PublishMessages(fmt.Sprintf("hello %d", i))8 time.Sleep(1 * time.Second)9 }10 mqtt.Disconnect()11}12import (13func main() {14 mqtt := Mqtt{15 }16 mqtt.Connect()17 mqtt.SubscribeMessages()18 time.Sleep(5 * time.Second)19 mqtt.Disconnect()20}21import (22func main() {23 mqtt := Mqtt{24 }25 mqtt.Connect()26 mqtt.SubscribeMessages()27 time.Sleep(5 * time.Second)28 mqtt.Disconnect()29}30import (31func main() {32 mqtt := Mqtt{33 }34 mqtt.Connect()35 mqtt.SubscribeMessages()36 time.Sleep(5 * time.Second)37 mqtt.Disconnect()38}39import (40func main() {41 mqtt := Mqtt{42 }43 mqtt.Connect()44 mqtt.SubscribeMessages()45 time.Sleep(5 * time.Second)46 mqtt.Disconnect()47}

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publishMessages

Using AI Code Generation

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1func main() {2 client.PublishMessages()3}4func main() {5 client.SubscribeMessages()6}7func main() {8 client.PublishMessages()9}10func main() {11 client.SubscribeMessages()12}13func main() {14 client.PublishMessages()15}16func main() {17 client.SubscribeMessages()18}19func main() {20 client.PublishMessages()21}22func main() {23 client.SubscribeMessages()24}25func main() {26 client.PublishMessages()27}

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publishMessages

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1import (2func main() {3 fmt.Println("main function started")4 mqtt := Mqtt{}5 mqtt.Connect()6 mqtt.PublishMessages()7 time.Sleep(time.Second * 5)8 mqtt.Disconnect()9}10import (11type Mqtt struct {12}13func (m *Mqtt) Connect() {14 opts.SetClientID("go-mqtt-client")15 opts.SetUsername("user")16 opts.SetPassword("pass")17 m.client = mqtt.NewClient(opts)18 if token := m.client.Connect(); token.Wait() && token.Error() != nil {19 panic(token.Error())20 }21}22func (m *Mqtt) PublishMessages() {23 m.client.Publish("topic1", 0, false, "message1")24 m.client.Publish("topic2", 0, false, "message2")25}26func (m *Mqtt) Disconnect() {27 m.client.Disconnect(250)28}29import (30type Mqtt struct {31}32func (m *Mqtt) Connect() {33 opts.SetClientID("go-mqtt-client")34 opts.SetUsername("user")35 opts.SetPassword("pass")36 m.client = mqtt.NewClient(opts)37 if token := m.client.Connect(); token.Wait() && token.Error() != nil {38 panic(token.Error())39 }40}41func (m *Mqtt) PublishMessages() {42 m.client.Publish("topic1", 0, false, "message1")43 m.client.Publish("topic2", 0, false, "message2")44}45func (m *Mqtt) Disconnect() {46 m.client.Disconnect(250)47}48func main() {49 fmt.Println("main function started")50 mqtt := Mqtt{}51 mqtt.Connect()52 mqtt.PublishMessages()53 time.Sleep(time.Second * 5)54 mqtt.Disconnect()55}

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