do.go

package main

import (
	"context"
	"fmt"

	"github.com/digitalocean/godo"
	"github.com/jmcvetta/randutil"
)

func doRegions(client *godo.Client) ([]string, error) {
	slugs := []string{}
	regions, _, err := client.Regions.List(context.Background(), &godo.ListOptions{})
	if err != nil {
		return slugs, err
	}
	for _, r := range regions {
		slugs = append(slugs, r.Slug)
	}
	return slugs, nil
}

func newDropLetMultiCreateRequest(prefix, region, keyID string, count int) *godo.DropletMultiCreateRequest {

	names := []string{}
	for i := 0; i < count; i++ {
		name, _ := randutil.AlphaString(8)
		names = append(names, fmt.Sprintf("%s-%s", prefix, name))
	}

	return &godo.DropletMultiCreateRequest{
		Names:  names,
		Region: region,
		Size:   "512mb",
		Image: godo.DropletCreateImage{
			// Slug: "ubuntu-14-04-x64",
			// Slug: "ubuntu-20-04-x64", // requires 'snap install nmap'
			Slug: "debian-10-x64",
		},
		SSHKeys: []godo.DropletCreateSSHKey{
			{Fingerprint: keyID},
		},
		Backups:           false,
		IPv6:              false,
		PrivateNetworking: false,
	}
}