Update bulidbucket client

client/cmd/buildbucket/cancel.go

-// Copyright 2016 The LUCI Authors. All rights reserved.
-// Use of this source code is governed under the Apache License, Version 2.0
-// that can be found in the LICENSE file.
-
-package main
-
-import (
-        "fmt"
-        "strconv"
-
-        "github.com/maruel/subcommands"
-
-        "github.com/luci/luci-go/common/cli"
-        "github.com/luci/luci-go/common/logging"
-)
-
-var cmdCancel = &subcommands.Command{
-        UsageLine: `cancel [flags] <build id>`,
-        ShortDesc: "Cancel a build",
-        LongDesc:  "Attempt to cancel an existing build.",
-        CommandRun: func() subcommands.CommandRun {
-                c := &cancelRun{}
-                c.SetDefaultFlags()
-                return c
-        },
-}
-
-type cancelRun struct {
-        baseCommandRun
-}
-
-func (r *cancelRun) Run(a subcommands.Application, args []string) int {
-        ctx := cli.GetContext(a, r)
-        if len(args) < 1 {
-                logging.Errorf(ctx, "missing parameter: <Build ID>")
-                return 1
-        } else if len(args) > 1 {
-                logging.Errorf(ctx, "unexpected arguments: %s", args[1:])
-        }
-
-        buildId, err := strconv.ParseInt(args[0], 10, 64)
-        if err != nil {
-                logging.Errorf(ctx, "expected a build id (int64): %s", err)
-                return 1
-        }
-
-        service, err := r.makeService(ctx, a)
-        if err != nil {
-                return 1
-        }
-
-        response, err := service.Cancel(buildId).Do()
-        if err != nil {
-                logging.Errorf(ctx, "buildbucket.Cancel failed: %s", err)
-                return 1
-        }
-
-        responseJSON, err := response.MarshalJSON()
-        if err != nil {
-                logging.Errorf(ctx, "could not unmarshal response: %s", err)
-                return 1
-        }
-
-        fmt.Println(string(responseJSON))
-        return 0
-}