cmd/gomote/create.go

// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package main

import (
	"flag"
	"fmt"
	"log"
	"os"
	"sort"
	"strings"
	"time"

	"golang.org/x/build/buildlet"
	"golang.org/x/build/dashboard"
)

func vmTypes() (s []string) {
	for k := range dashboard.Builders {
		s = append(s, k)
	}
	sort.Strings(s)
	return
}

func create(args []string) error {
	fs := flag.NewFlagSet("create", flag.ContinueOnError)

	fs.Usage = func() {
		fmt.Fprintln(os.Stderr, "create usage: gomote create [create-opts] <type>\n")
		fs.PrintDefaults()
		fmt.Fprintln(os.Stderr, "\nValid types:\n")
		for _, t := range vmTypes() {
			fmt.Fprintf(os.Stderr, "  * %s\n", t)
		}
		os.Exit(1)
	}
	var timeout time.Duration
	fs.DurationVar(&timeout, "timeout", 60*time.Minute, "how long the VM will live before being deleted.")

	fs.Parse(args)
	if fs.NArg() != 1 {
		fs.Usage()
	}
	builderType := fs.Arg(0)
	_, ok := dashboard.Builders[builderType]
	if !ok {
		var valid []string
		var prefixMatch []string
		for k := range dashboard.Builders {
			valid = append(valid, k)
			if strings.HasPrefix(k, builderType) {
				prefixMatch = append(prefixMatch, k)
			}
		}
		if len(prefixMatch) == 1 {
			builderType = prefixMatch[0]
		} else {
			sort.Strings(valid)
			return fmt.Errorf("Invalid builder type %q. Valid options include: %q", builderType, valid)
		}
	}

	if *user == "" {
		instPrefix := fmt.Sprintf("mote-%s-", username())
		instName, err := nextName(instPrefix + builderType)
		if err != nil {
			return err
		}
		client, err := buildlet.StartNewVM(projTokenSource(), instName, builderType, buildlet.VMOpts{
			Zone:        *zone,
			ProjectID:   *proj,
			TLS:         userKeyPair(),
			DeleteIn:    timeout,
			Description: fmt.Sprintf("gomote buildlet for %s", username()),
			OnInstanceRequested: func() {
				log.Printf("Sent create request. Waiting for operation.")
			},
			OnInstanceCreated: func() {
				log.Printf("Instance created.")
			},
		})
		if err != nil {
			return fmt.Errorf("failed to create VM: %v", err)
		}
		fmt.Printf("%s\t%s\n", strings.TrimPrefix(instName, instPrefix), client.URL())
	} else {
		cc := coordinatorClient()
		client, err := cc.CreateBuildlet(builderType)
		if err != nil {
			return fmt.Errorf("failed to create buildlet: %v", err)
		}
		fmt.Println(client.RemoteName())
	}
	return nil
}