go code to create node config for every android device dynamically

main.go

package main

import (
	"encoding/json"
	"io/ioutil"
	"log"
	"os"
	"os/exec"
	"strings"
)

type NodeConfig struct {
	Capabilities  []Capability
	Configuration Configuration
}

type Capability struct {
	ApplicationName string
	DeviceName      string
	BrowserName     string
	PlatformName    string
	MaxInstances    int32
}

type Configuration struct {
	CleanUpCycle  int32
	Timeout       int32
	Proxy         string
	Host          string
	Port          int32
	Bootstrapport int32
	MaxSession    int32
	Register      bool
	RegisterCycle int32
	HubPort       int32
	HubHost       string
	Udid          string
}

func main() {
	devices := getConnectedDevices()
	for _, device := range devices {
		log.Println("Creating config file for device ", device)
		writeConfigToFile(device)
	}
}

func getConnectedDevices() []string {
	path, err := exec.LookPath("adb")
	if err != nil {
		log.Fatal(err)
	}

	cmd := exec.Command(path, "devices")
	out, err := cmd.Output()
	if err != nil {
		log.Fatal(err)
	}

	var devices []string
	op := strings.Split(string(out), "\n")
	for i := 1; i < len(op)-2; i++ {
		if !strings.Contains(op[i], "device") {
			continue
		}
		deviceDetails := strings.Split(op[i], "device")
		devices = append(devices, strings.TrimSpace(deviceDetails[0]))
	}

	return devices
}

func getTemplateConfig() NodeConfig {
	file, err := os.Open("template_config.json")
	var template NodeConfig
	data, err := ioutil.ReadAll(file)
	if err != nil {
		log.Fatal(err)
	}

	err = json.Unmarshal(data, &template)
	if err != nil {
		log.Fatal(err)
	}

	return template
}

func writeConfigToFile(deviceName string) {
	file, err := os.Create(deviceName + "_config.json")
	if err != nil {
		log.Fatal(err)
	}

	nodeConfig := getTemplateConfig()
	nodeConfig.Capabilities[0].DeviceName = deviceName
	nodeConfig.Configuration.Udid = deviceName

	nodeConfigData, err := json.Marshal(nodeConfig)
	if err != nil {
		log.Fatal(err)
	}

	file.Write(nodeConfigData)
	if err != nil {
		log.Fatal(err)
	}
}