componentDidMount()

in web/src/App.js [52:76]

• 22 lines of code
• 1 McCabe index (conditional complexity)

  componentDidMount(){
    PubSub.subscribe(mqtt_topic).subscribe({
        next: data => {
          data.value.client_received_at = new Date()
          console.log(`Message received: ${JSON.stringify(data.value)} \nRaw data: ${JSON.stringify(data)}`)

          this.setState(prevState => ({
            connectionState: `Connected and Subscribed to topic '${mqtt_topic}'; Messages Received`,
            messages: [...prevState.messages, data.value]
          }))
        },
        error: error => {
          console.log(JSON.stringify(error, null, 2))
          this.setState(prevState => ({
            connectionState: `Failed to subscribe to topic '${mqtt_topic}' on endpoint ${mqtt_host}: ${error.error.errorMessage}`
          }))
        },
        close: () => {
          this.setState({ connectionState: `Connection Closed` })
        },
    })


    this.setState({ connectionState: `Connected and Subscribed to topic '${mqtt_topic}'; Awaiting Messages...` })
  }