BBIT-Kai
74 lines
1.7 KiB
Go
74 lines
1.7 KiB
Go
package main
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import (
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"crypto/tls"
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"sentinel/pkg/log"
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"time"
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mqtt "github.com/eclipse/paho.mqtt.golang"
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)
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type MQTTService struct {
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client mqtt.Client
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handler func(topic string, payload []byte)
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}
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func NewMQTTService(broker, clientID, username, password string, keepalive int) *MQTTService {
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opts := mqtt.NewClientOptions()
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opts.AddBroker(broker)
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opts.SetClientID(clientID)
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opts.SetUsername(username)
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opts.SetPassword(password)
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opts.SetKeepAlive(time.Duration(keepalive) * time.Second)
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opts.SetTLSConfig(&tls.Config{InsecureSkipVerify: true})
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ms := &MQTTService{}
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opts.SetDefaultPublishHandler(func(c mqtt.Client, m mqtt.Message) {
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if ms.handler != nil {
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ms.handler(m.Topic(), m.Payload())
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}
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})
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opts.OnConnect = func(c mqtt.Client) {
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log.Println("物联网服务已连接")
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}
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opts.OnConnectionLost = func(c mqtt.Client, err error) {
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log.Println("物联网服务已断开：", err)
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}
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ms.client = mqtt.NewClient(opts)
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return ms
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}
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func (m *MQTTService) Connect() error {
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token := m.client.Connect()
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if token.Wait() && token.Error() != nil {
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return token.Error()
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}
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return nil
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}
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func (m *MQTTService) Subscribe(topic string, qos byte) error {
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token := m.client.Subscribe(topic, qos, nil)
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if token.Wait() && token.Error() != nil {
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return token.Error()
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}
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log.Println("物联网服务消息订阅：", topic)
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return nil
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}
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func (m *MQTTService) Publish(topic string, qos byte, retained bool, payload interface{}) error {
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token := m.client.Publish(topic, qos, retained, payload)
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token.Wait()
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return token.Error()
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}
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func (m *MQTTService) SetMessageHandler(h func(topic string, payload []byte)) {
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m.handler = h
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}
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func (m *MQTTService) Close() {
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if m.client != nil {
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m.client.Disconnect(250)
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}
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}
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