Golang Command.Args方法代碼示例

func init() {
	Describe("concreteCompiler", func() {
		var (
			compiler       Compiler
			compressor     *fakecmd.FakeCompressor
			blobstore      *fakeblobstore.FakeBlobstore
			fs             *fakesys.FakeFileSystem
			runner         *fakecmdrunner.FakeFileLoggingCmdRunner
			packageApplier *fakepackages.FakeApplier
			packagesBc     *fakebc.FakeBundleCollection
		)

		BeforeEach(func() {
			compressor = fakecmd.NewFakeCompressor()
			blobstore = &fakeblobstore.FakeBlobstore{}
			fs = fakesys.NewFakeFileSystem()
			runner = fakecmdrunner.NewFakeFileLoggingCmdRunner()
			packageApplier = fakepackages.NewFakeApplier()
			packagesBc = fakebc.NewFakeBundleCollection()

			compiler = NewConcreteCompiler(
				compressor,
				blobstore,
				fs,
				runner,
				FakeCompileDirProvider{Dir: "/fake-compile-dir"},
				packageApplier,
				packagesBc,
			)
		})

		BeforeEach(func() {
			fs.MkdirAll("/fake-compile-dir", os.ModePerm)
		})

		Describe("Compile", func() {
			var (
				bundle  *fakebc.FakeBundle
				pkg     Package
				pkgDeps []boshmodels.Package
			)

			BeforeEach(func() {
				bundle = packagesBc.FakeGet(boshmodels.Package{
					Name:    "pkg_name",
					Version: "pkg_version",
				})

				bundle.InstallPath = "/fake-dir/data/packages/pkg_name/pkg_version"
				bundle.EnablePath = "/fake-dir/packages/pkg_name"

				compressor.CompressFilesInDirTarballPath = "/tmp/compressed-compiled-package"

				pkg, pkgDeps = getCompileArgs()
			})

			It("returns blob id and sha1 of created compiled package", func() {
				blobstore.CreateBlobID = "fake-blob-id"
				blobstore.CreateFingerprint = "fake-blob-sha1"

				blobID, sha1, err := compiler.Compile(pkg, pkgDeps)
				Expect(err).ToNot(HaveOccurred())

				Expect(blobID).To(Equal("fake-blob-id"))
				Expect(sha1).To(Equal("fake-blob-sha1"))
			})

			It("cleans up all packages before and after applying dependent packages", func() {
				_, _, err := compiler.Compile(pkg, pkgDeps)
				Expect(err).ToNot(HaveOccurred())
				Expect(packageApplier.ActionsCalled).To(Equal([]string{"KeepOnly", "Apply", "Apply", "KeepOnly"}))
				Expect(packageApplier.KeptOnlyPackages).To(BeEmpty())
			})

			It("returns an error if cleaning up packages fails", func() {
				packageApplier.KeepOnlyErr = errors.New("fake-keep-only-error")

				_, _, err := compiler.Compile(pkg, pkgDeps)
				Expect(err).To(HaveOccurred())
				Expect(err.Error()).To(ContainSubstring("fake-keep-only-error"))
			})

			It("fetches source package from blobstore without checking SHA1 by default because of Director bug", func() {
				_, _, err := compiler.Compile(pkg, pkgDeps)
				Expect(err).ToNot(HaveOccurred())

				Expect(blobstore.GetBlobIDs[0]).To(Equal("blobstore_id"))
				Expect(blobstore.GetFingerprints[0]).To(Equal(""))
			})

			PIt("(Pending Tracker Story: <https://www.pivotaltracker.com/story/show/94524232>) fetches source package from blobstore and checks SHA1 by default in future", func() {
				_, _, err := compiler.Compile(pkg, pkgDeps)
				Expect(err).ToNot(HaveOccurred())

				Expect(blobstore.GetBlobIDs[0]).To(Equal("blobstore_id"))
				Expect(blobstore.GetFingerprints[0]).To(Equal("sha1"))
			})

			It("returns an error if removing compile target directory during uncompression fails", func() {
				fs.RemoveAllStub = func(path string) error {
//.........這裏部分代碼省略.........

func (s ConcreteScript) runOnce(params ScriptParams) (int, error) {
	jobChange := params.JobChange()
	hashChange := params.HashChange()
	updatedPkgs := params.UpdatedPackages()

	command := boshsys.Command{
		Name: s.path,
		Env: map[string]string{
			"PATH": "/usr/sbin:/usr/bin:/sbin:/bin",
		},
	}

	jobState, err := params.JobState()
	if err != nil {
		return 0, bosherr.WrapError(err, "Getting job state")
	}

	if jobState != "" {
		command.Env["BOSH_JOB_STATE"] = jobState
	}

	jobNextState, err := params.JobNextState()
	if err != nil {
		return 0, bosherr.WrapError(err, "Getting job next state")
	}

	if jobNextState != "" {
		command.Env["BOSH_JOB_NEXT_STATE"] = jobNextState
	}

	command.Args = append(command.Args, jobChange, hashChange)
	command.Args = append(command.Args, updatedPkgs...)

	process, err := s.runner.RunComplexCommandAsync(command)
	if err != nil {
		return 0, bosherr.WrapError(err, "Running drain script")
	}

	var result boshsys.Result

	isCanceled := false

	// Can only wait once on a process but cancelling can happen multiple times
	for processExitedCh := process.Wait(); processExitedCh != nil; {
		select {
		case result = <-processExitedCh:
			processExitedCh = nil
		case <-s.cancelCh:
			// Ignore possible TerminateNicely error since we cannot return it
			err := process.TerminateNicely(10 * time.Second)
			if err != nil {
				s.logger.Error(s.logTag, "Failed to terminate %s", err.Error())
			}
			isCanceled = true
		}
	}

	if isCanceled {
		if result.Error != nil {
			return 0, bosherr.WrapError(result.Error, "Script was cancelled by user request")
		}

		return 0, bosherr.Error("Script was cancelled by user request")
	}

	if result.Error != nil && result.ExitStatus == -1 {
		return 0, bosherr.WrapError(result.Error, "Running drain script")
	}

	value, err := strconv.Atoi(strings.TrimSpace(result.Stdout))
	if err != nil {
		return 0, bosherr.WrapError(err, "Script did not return a signed integer")
	}

	return value, nil
}