main.go

package main

import (
	"encoding/json"
	"fmt"
	"io/ioutil"
	"log"
	"net/http"

	"github.com/gorilla/mux"
)

type Sensor struct {
	Id          string `json:"id"`
	Temperature int8   `json:"temperature"`
}

func main() {
	router := mux.NewRouter()
	router.HandleFunc("/temperature/{id}", GetSensorTemperature).Methods("GET", "OPTIONS")

	fmt.Println("Starting server on the port 8081...")

	log.Fatal(http.ListenAndServe(":8081", router))
}

func GetSensorTemperature(w http.ResponseWriter, r *http.Request) {
	w.Header().Set("Context-Type", "application/json")
	w.Header().Set("Access-Control-Allow-Origin", "*")

	params := mux.Vars(r)

	response, err := http.Get("https://hasydbj5c4gpa2oozfpjpc677a0hxuob.lambda-url.ap-southeast-2.on.aws/sensor/" + params["id"])
	if err != nil {
		panic(err)
	}

	body, err := ioutil.ReadAll(response.Body)
	if err != nil {
		log.Fatalln(err)
	}
	var sensor Sensor
	if err := json.Unmarshal(body, &sensor); err != nil {
		panic(err)
	}
	json.NewEncoder(w).Encode(sensor)
}