package main

import (
	"fmt"
	"github.com/gophercloud/gophercloud"
	"github.com/gophercloud/gophercloud/openstack"
	"github.com/gophercloud/gophercloud/openstack/identity/v3/services"
	"github.com/gophercloud/gophercloud/pagination"
	"os"
)

func main() {
	auth_opts := gophercloud.AuthOptions{
		IdentityEndpoint: "https://keystone.xxx.yyy/",
		Username:         "user",
		Password:         "pass",
		AllowReauth:      true,
		TenantID:         "tenant_id",
	}

	provider, err := openstack.AuthenticatedClient(auth_opts)
	if err != nil {
		fmt.Println("Authentication error: ", err)
		os.Exit(1)
	}

	opts2 := gophercloud.EndpointOpts{Region: "my_region"}
	identity, err := openstack.NewIdentityV3(provider, opts2)

	opts := services.ListOpts{}
	pager := services.List(identity, &opts)
	err = pager.EachPage(func(page pagination.Page) (bool, error) {
		projectList, err := services.ExtractServices(page)
		if err != nil {
			return false, nil
		}
		for _, t := range projectList {
			fmt.Println(t)
		}
		return true, nil
	})
	if err != nil {
		fmt.Println("Tenat list error: ", err)
		os.Exit(1)
	}
}