[原创] linux 下上传 datapoint数据到yeelink 【golang版本】同时上传2个数据点

/* Create by sndnvaps<sndnvaps@gmail.com>

* data: 2015-04-12
* upload 2 datapoint to yeelink.net at the same time 
* post by sndnvaps 
* hold on https://github.com/sndnvaps/MyRasPi
*/ 
//upload_client.go 

import (
   "fmt"
   "io/ioutil"
   "net"
   "time"
   "os"
   "strconv"
)


func checkError(err error) {
     if err != nil {
        fmt.Fprintf(os.Stderr, "Fatal error: %s\n",err.Error())
        os.Exit(1)

        }
}

func GetCpuTemp() (t float32) {
      tf ,err := os.Open("/sys/class/thermal/thermal_zone0/temp")
      if err != nil {
      fmt.Printf("Read Cpu file error = %s\n",err.Error())
      }
      defer tf.Close()
      data := make([]byte,5)
      tf.Read(data)
      data_temp := string(data)
      temp, _ := strconv.Atoi(data_temp)
      var tt float32
      tt = float32(temp)
      fmt.Printf("Cpu temp  = %2.2f\n", tt/1000.00)

      return (tt/1000.00)


}


var c chan int

func yeelink_upload(device_id, sensor_id string, val float32) {
        //Connet the api.yeelink.net
        //REMOTE_IP 42.96.164.52
        //PORT      80

        conn, err := net.Dial("tcp","42.96.164.52:80")
        defer conn.Close()
        checkError(err)
        fmt.Printf("Post Request \n")
//        fmt.Printf("Cpu temp = %2.2f\n", GetCpuTemp())

        time.Sleep(time.Second)

         post := fmt.Sprintf("POST /v1.0/device/%s/sensor/%s/datapoints HTTP/1.0\r\nHost: api.yeelink.net\r\nAccept: */*\r\n",device_id,sensor_id);
         _ , err = conn.Write([]byte(post));


    if err != nil {
           fmt.Printf("Sent Requset ok\n")
        }


        fmt.Printf("Send the API-keys\n")
        time.Sleep(time.Second)

    // send the API-key
     _ , err = conn.Write([]byte("U-ApiKey: 108968b03a7e9334b2aca7c45bXXXXXX\r\nContent-Length: 15\r\nContent-type: application/json;charset=utf-8\r\n")) 
       //此处填写你自己的API-key
         checkError(err)
        time.Sleep(time.Second)
     //send the '\r\n'
     _ , err = conn.Write([]byte("\r\n"))
       checkError(err)

      //send the value
      time.Sleep(time.Second)
      var value string

      value = fmt.Sprintf("{\"value\":%2.2f}\n\n",val)     //数据为 xx.xx 


     //_ , err = conn.Write([]byte("{\"value\":13.14}\r\n"))
       _, err = conn.Write([]byte(value))

         checkError(err)
        time.Sleep(time.Second)
      result, err := ioutil.ReadAll(conn)
      checkError(err)
      fmt.Println(string(result))
        c <- 1
   // os.Exit(1)
}

func main() {
          device_id := "XXXXX"     //设备id 
          sensor_id := "XXXXX"    //传感器id
          sensor_id_2 := "XXXXX" //传感器id_2 
          val := GetCpuTemp()     //此处的val只用于测试， 如果你有其它的参数，可以自行修改， val 类型为 float32, 长度需要5位，即xx.xx, 33.33 ,带2位小数
          c = make(chan int)

        go  yeelink_upload(device_id,sensor_id,val)    //
         // time.Sleep(time.Second * 15)
        go  yeelink_upload(device_id,sensor_id_2, val)
          //return
         <- c
         <- c
}

      实现同时上传二个Datapoint数据到yeelink.net 

   原理是使用golang chanel 

      运行效果如下图：