Simple usage of Chef partial search in Golang

partial_search.go

package main

import (
	"fmt"
	"io/ioutil"
	"os"

	"github.com/go-chef/chef"
)

func kaboom(message string) {
	fmt.Fprint(os.Stderr, message)
	os.Exit(1)
}

func main() {
	clientKey, err := ioutil.ReadFile("/etc/chef/client.pem")

	if err != nil {
		kaboom(fmt.Sprintf("error reading client PEM file: %s\n", err.Error()))
	}

	hostname, _ := os.Hostname()

	client, err := chef.NewClient(&chef.Config{
		Name:    hostname,
		Key:     string(clientKey),
		BaseURL: "http://localhost:4545",
	})

	if err != nil {
		kaboom(fmt.Sprintf("error building Chef client: %s\n", err.Error()))
	}

	params := make(map[string]interface{})
	params["ec2.placement_availability_zone"] = []string{"ec2", "placement_availability_zone"}
	
	search := fmt.Sprintf("name:%s", hostname)

	res, err := client.Search.PartialExec("node", search, params)

	fmt.Println(err)
	fmt.Printf("%+v\n", res)
}