tpl-and-run.go

package main

import (
	"bytes"
	"encoding/json"
	"fmt"
	"html/template"
	"io/ioutil"
	"log"
	"os/exec"
)

func main() {
	tpl, err := ioutil.ReadFile("services/deploy1.yaml")
	if err != nil {
		fmt.Print(err)
	}

	check := func(err error) {
		if err != nil {
			log.Fatal(err)
		}
	}
	t, err := template.New("webpage").Parse(string(tpl))
	check(err)

	data := struct {
		Port  int32
		Items []string
	}{
		Port: 8080,
		Items: []string{
			"My photos",
			"My blog",
		},
	}

	var buffer bytes.Buffer
	err = t.Execute(&buffer, data)

	check(err)
	fmt.Printf("%s", buffer.String())

	cmd := exec.Command("echo", "-n", `{"Name": "Bob", "Age": 32}`)
	stdout, err := cmd.StdoutPipe()
	if err != nil {
		log.Fatal(err)
	}
	if err := cmd.Start(); err != nil {
		log.Fatal(err)
	}
	var person struct {
		Name string
		Age  int
	}
	if err := json.NewDecoder(stdout).Decode(&person); err != nil {
		log.Fatal(err)
	}
	if err := cmd.Wait(); err != nil {
		log.Fatal(err)
	}
	fmt.Printf("%s is %d years old\n", person.Name, person.Age)

}