func (c *installerFactoryContext) Blobstore() boshblob.Blobstore {
	if c.blobstore != nil {
		return c.blobstore
	}

	options := map[string]interface{}{"blobstore_path": c.target.BlobstorePath()}
	localBlobstore := boshblob.NewLocalBlobstore(c.fs, c.uuidGenerator, options)
	c.blobstore = boshblob.NewSHA1VerifiableBlobstore(localBlobstore)

	return c.blobstore
}
)

var _ = Describe("sha1VerifiableBlobstore", func() {
	const (
		fixturePath = "test_assets/some.config"
		fixtureSHA1 = "da39a3ee5e6b4b0d3255bfef95601890afd80709"
	)

	var (
		innerBlobstore          *fakeblob.FakeBlobstore
		sha1VerifiableBlobstore boshblob.Blobstore
	)

	BeforeEach(func() {
		innerBlobstore = &fakeblob.FakeBlobstore{}
		sha1VerifiableBlobstore = boshblob.NewSHA1VerifiableBlobstore(innerBlobstore)
	})

	Describe("Get", func() {
		It("returns without an error if sha1 matches", func() {
			innerBlobstore.GetFileName = fixturePath

			fileName, err := sha1VerifiableBlobstore.Get("fake-blob-id", fixtureSHA1)
			Expect(err).ToNot(HaveOccurred())

			Expect(innerBlobstore.GetBlobIDs).To(Equal([]string{"fake-blob-id"}))
			Expect(fileName).To(Equal(fixturePath))
		})

		It("returns error if sha1 does not match", func() {
			innerBlobstore.GetFileName = fixturePath
func main() {
	logger, fs, runner, uuidGen := basicDeps()

	defer logger.HandlePanic("Main")

	config := mustLoadConfig(fs, logger)

	eventLogFactory := bpeventlog.NewFactory(config.EventLog, logger)

	eventLog := eventLogFactory.NewLog()

	mustSetTmpDir(config, fs, eventLog)

	mustCreateReposDir(config, fs, eventLog)

	localBlobstore := boshblob.NewLocalBlobstore(
		fs,
		uuidGen,
		config.Blobstore.Options,
	)

	blobstore := boshblob.NewSHA1VerifiableBlobstore(localBlobstore)

	downloader := bpdload.NewDefaultMuxDownloader(fs, runner, blobstore, logger)

	extractor := bptar.NewCmdExtractor(runner, fs, logger)

	compressor := bptar.NewCmdCompressor(runner, fs, logger)

	renderedArchivesCompiler := bptplcomp.NewRenderedArchivesCompiler(
		fs,
		runner,
		compressor,
		logger,
	)

	jobReaderFactory := bpreljob.NewReaderFactory(
		downloader,
		extractor,
		fs,
		logger,
	)

	reposFactory := NewReposFactory(config.ReposDir, fs, downloader, blobstore, logger)

	blobstoreProvisioner := bpprov.NewBlobstoreProvisioner(
		fs,
		config.Blobstore,
		logger,
	)

	err := blobstoreProvisioner.Provision()
	if err != nil {
		eventLog.WriteErr(bosherr.WrapError(err, "Provisioning blobstore"))
		os.Exit(1)
	}

	templatesCompiler := bptplcomp.NewConcreteTemplatesCompiler(
		renderedArchivesCompiler,
		jobReaderFactory,
		reposFactory.NewJobsRepo(),
		reposFactory.NewTemplateToJobRepo(),
		reposFactory.NewRuntimePackagesRepo(),
		reposFactory.NewTemplatesRepo(),
		blobstore,
		logger,
	)

	packagesCompilerFactory := bppkgscomp.NewConcretePackagesCompilerFactory(
		reposFactory.NewPackagesRepo(),
		reposFactory.NewCompiledPackagesRepo(),
		blobstore,
		eventLog,
		logger,
	)

	updaterFactory := bpinstupd.NewFactory(
		templatesCompiler,
		packagesCompilerFactory,
		eventLog,
		logger,
	)

	releaseReaderFactory := bprel.NewReaderFactory(
		downloader,
		extractor,
		fs,
		logger,
	)

	deploymentReaderFactory := bpdep.NewReaderFactory(fs, logger)

	vagrantVMProvisionerFactory := bpvagrantvm.NewVMProvisionerFactory(
		fs,
		runner,
		config.AssetsDir,
		config.Blobstore.AsMap(),
		config.VMProvisioner,
		eventLog,
		logger,
	)

	vagrantVMProvisioner := vagrantVMProvisionerFactory.NewVMProvisioner()

	releaseCompiler := bpprov.NewReleaseCompiler(
		releaseReaderFactory,
		packagesCompilerFactory,
		templatesCompiler,
		vagrantVMProvisioner,
		eventLog,
		logger,
	)

	instanceProvisioner := bpinstance.NewProvisioner(
		updaterFactory,
		logger,
	)

	singleVMProvisionerFactory := bpprov.NewSingleVMProvisionerFactory(
		deploymentReaderFactory,
		config.DeploymentProvisioner,
		vagrantVMProvisioner,
		releaseCompiler,
		instanceProvisioner,
		eventLog,
		logger,
	)

	deploymentProvisioner := singleVMProvisionerFactory.NewSingleVMProvisioner()

	err = deploymentProvisioner.Provision()
	if err != nil {
		eventLog.WriteErr(bosherr.WrapError(err, "Provisioning deployment"))
		os.Exit(1)
	}
}