Talk to Vault using GitHub auth backend

vault.go

package main

import (
	"log"
	"os"

	"github.com/hashicorp/vault/api"
	"github.com/hashicorp/vault/builtin/credential/github"
)

func main() {
	config := api.DefaultConfig()
	config.Address = os.Getenv("VAULT_ADDR")
	client, err := api.NewClient(config)
	if err != nil {
		log.Fatal(err)
	}

	handler := &github.CLIHandler{}
	vars := map[string]string{
		"token": os.Getenv("GITHUB_VAULT_TOKEN"),
	}
	token, err := handler.Auth(client, vars)
	if err != nil {
		log.Fatal(err)
	}
	client.SetToken(token)

	path := "secret/some-path"
	data := map[string]interface{}{
		"hello": "world",
		"foo":   "bar",
	}

	secret, err := client.Logical().Write(path, data)
	if err != nil {
		log.Fatal(err)
	}
	if secret == nil {
		log.Printf("Success! Data written to: %s", path)
	}

	secret, err = client.Logical().Read(path)
	if err != nil {
		log.Fatal(err)
	}
	if secret == nil {
		log.Fatalf("No value found at %s", path)
	}

	log.Printf("Secret data: %v\n", secret.Data)

	if _, err = client.Logical().Delete(path); err != nil {
		log.Fatalf("Error deleting '%s': %s", path, err)
	}
	log.Printf("Success! Deleted '%s'", path)
}

$ go run vault.go
2015/12/02 17:12:40 Success! Data written to: secret/some-path
2015/12/02 17:12:40 Secret data: map[foo:bar hello:world]
2015/12/02 17:12:40 Success! Deleted 'secret/some-path'