Example #1
0
func aptlyMirrorList(cmd *commander.Command, args []string) error {
	var err error
	if len(args) != 0 {
		cmd.Usage()
		return err
	}

	repoCollection := debian.NewRemoteRepoCollection(context.database)

	if repoCollection.Len() > 0 {
		fmt.Printf("List of mirrors:\n")
		repos := make(sort.StringSlice, repoCollection.Len())
		i := 0
		repoCollection.ForEach(func(repo *debian.RemoteRepo) error {
			repos[i] = repo.String()
			i++
			return nil
		})

		sort.Strings(repos)
		for _, repo := range repos {
			fmt.Printf(" * %s\n", repo)
		}

		fmt.Printf("\nTo get more information about mirror, run `aptly mirror show <name>`.\n")
	} else {
		fmt.Printf("No mirrors found, create one with `aptly mirror create ...`.\n")
	}
	return err
}
Example #2
0
func aptlyMirrorUpdate(cmd *commander.Command, args []string) {
	if len(args) != 1 {
		cmd.Usage()
		return
	}

	name := args[0]

	repoCollection := debian.NewRemoteRepoCollection(context.database)
	repo, err := repoCollection.ByName(name)
	if err != nil {
		log.Fatalf("Unable to update: %s", err)
	}

	err = repoCollection.LoadComplete(repo)
	if err != nil {
		log.Fatalf("Unable to update: %s", err)
	}

	err = repo.Fetch(context.downloader)
	if err != nil {
		log.Fatalf("Unable to update: %s", err)
	}

	err = repo.Download(context.downloader, context.database, context.packageRepository)
	if err != nil {
		log.Fatalf("Unable to update: %s", err)
	}

	err = repoCollection.Update(repo)
	if err != nil {
		log.Fatalf("Unable to update: %s", err)
	}

}
Example #3
0
func aptlyMirrorCreate(cmd *commander.Command, args []string) {
	if len(args) < 3 {
		cmd.Usage()
		return
	}

	var architectures []string
	archs := cmd.Flag.Lookup("architecture").Value.String()
	if len(archs) > 0 {
		architectures = strings.Split(archs, ",")
	}

	repo, err := debian.NewRemoteRepo(args[0], args[1], args[2], args[3:], architectures)
	if err != nil {
		log.Fatalf("Unable to create mirror: %s", err)
	}

	err = repo.Fetch(context.downloader)
	if err != nil {
		log.Fatalf("Unable to fetch mirror: %s", err)
	}

	repoCollection := debian.NewRemoteRepoCollection(context.database)

	err = repoCollection.Add(repo)
	if err != nil {
		log.Fatalf("Unable to add mirror: %s", err)
	}

	fmt.Printf("\nMirror %s successfully added.\nYou can run 'aptly mirror update %s' to download repository contents.\n", repo, repo.Name)
}
Example #4
0
func aptlyMirrorCreate(cmd *commander.Command, args []string) error {
	var err error
	if len(args) < 3 {
		cmd.Usage()
		return err
	}

	downloadSources := utils.Config.DownloadSourcePackages || cmd.Flag.Lookup("with-sources").Value.Get().(bool)

	repo, err := debian.NewRemoteRepo(args[0], args[1], args[2], args[3:], context.architecturesList, downloadSources)
	if err != nil {
		return fmt.Errorf("unable to create mirror: %s", err)
	}

	verifier, err := getVerifier(cmd)
	if err != nil {
		return fmt.Errorf("unable to initialize GPG verifier: %s", err)
	}

	err = repo.Fetch(context.downloader, verifier)
	if err != nil {
		return fmt.Errorf("unable to fetch mirror: %s", err)
	}

	repoCollection := debian.NewRemoteRepoCollection(context.database)

	err = repoCollection.Add(repo)
	if err != nil {
		return fmt.Errorf("unable to add mirror: %s", err)
	}

	fmt.Printf("\nMirror %s successfully added.\nYou can run 'aptly mirror update %s' to download repository contents.\n", repo, repo.Name)
	return err
}
Example #5
0
func aptlyMirrorShow(cmd *commander.Command, args []string) error {
	var err error
	if len(args) != 1 {
		cmd.Usage()
		return err
	}

	name := args[0]

	repoCollection := debian.NewRemoteRepoCollection(context.database)
	repo, err := repoCollection.ByName(name)
	if err != nil {
		return fmt.Errorf("unable to show: %s", err)
	}

	err = repoCollection.LoadComplete(repo)
	if err != nil {
		return fmt.Errorf("unable to show: %s", err)
	}

	fmt.Printf("Name: %s\n", repo.Name)
	fmt.Printf("Archive Root URL: %s\n", repo.ArchiveRoot)
	fmt.Printf("Distribution: %s\n", repo.Distribution)
	fmt.Printf("Components: %s\n", strings.Join(repo.Components, ", "))
	fmt.Printf("Architectures: %s\n", strings.Join(repo.Architectures, ", "))
	downloadSources := "no"
	if repo.DownloadSources {
		downloadSources = "yes"
	}
	fmt.Printf("Download Sources: %s\n", downloadSources)
	if repo.LastDownloadDate.IsZero() {
		fmt.Printf("Last update: never\n")
	} else {
		fmt.Printf("Last update: %s\n", repo.LastDownloadDate.Format("2006-01-02 15:04:05 MST"))
		fmt.Printf("Number of packages: %d\n", repo.NumPackages())
	}

	fmt.Printf("\nInformation from release file:\n")
	for _, k := range utils.StrMapSortedKeys(repo.Meta) {
		fmt.Printf("%s: %s\n", k, repo.Meta[k])
	}

	withPackages := cmd.Flag.Lookup("with-packages").Value.Get().(bool)
	if withPackages {
		if repo.LastDownloadDate.IsZero() {
			fmt.Printf("Unable to show package list, mirror hasn't been downloaded yet.\n")
		} else {
			ListPackagesRefList(repo.RefList())
		}
	}

	return err
}
Example #6
0
func aptlyMirrorList(cmd *commander.Command, args []string) {
	if len(args) != 0 {
		cmd.Usage()
		return
	}

	fmt.Printf("List of mirrors:\n")

	repoCollection := debian.NewRemoteRepoCollection(context.database)
	repoCollection.ForEach(func(repo *debian.RemoteRepo) {
		fmt.Printf(" * %s\n", repo)
	})

	fmt.Printf("\nTo get more information about repository, run `aptly mirror show <name>`.\n")
}
Example #7
0
func aptlySnapshotCreate(cmd *commander.Command, args []string) error {
	var (
		err      error
		snapshot *debian.Snapshot
	)

	if len(args) == 4 && args[1] == "from" && args[2] == "mirror" {
		// aptly snapshot create snap from mirror mirror
		repoName, snapshotName := args[3], args[0]

		repoCollection := debian.NewRemoteRepoCollection(context.database)
		repo, err := repoCollection.ByName(repoName)
		if err != nil {
			return fmt.Errorf("unable to create snapshot: %s", err)
		}

		err = repoCollection.LoadComplete(repo)
		if err != nil {
			return fmt.Errorf("unable to create snapshot: %s", err)
		}

		snapshot, err = debian.NewSnapshotFromRepository(snapshotName, repo)
		if err != nil {
			return fmt.Errorf("unable to create snapshot: %s", err)
		}
	} else if len(args) == 2 && args[1] == "empty" {
		// aptly snapshot create snap empty
		snapshotName := args[0]

		packageList := debian.NewPackageList()

		snapshot = debian.NewSnapshotFromPackageList(snapshotName, nil, packageList, "Created as empty")
	} else {
		cmd.Usage()
		return err
	}

	snapshotCollection := debian.NewSnapshotCollection(context.database)

	err = snapshotCollection.Add(snapshot)
	if err != nil {
		return fmt.Errorf("unable to add snapshot: %s", err)
	}

	fmt.Printf("\nSnapshot %s successfully created.\nYou can run 'aptly publish snapshot %s' to publish snapshot as Debian repository.\n", snapshot.Name, snapshot.Name)

	return err
}
Example #8
0
func aptlyMirrorUpdate(cmd *commander.Command, args []string) error {
	var err error
	if len(args) != 1 {
		cmd.Usage()
		return err
	}

	name := args[0]

	repoCollection := debian.NewRemoteRepoCollection(context.database)
	repo, err := repoCollection.ByName(name)
	if err != nil {
		return fmt.Errorf("unable to update: %s", err)
	}

	err = repoCollection.LoadComplete(repo)
	if err != nil {
		return fmt.Errorf("unable to update: %s", err)
	}

	ignoreMismatch := cmd.Flag.Lookup("ignore-checksums").Value.Get().(bool)

	verifier, err := getVerifier(cmd)
	if err != nil {
		return fmt.Errorf("unable to initialize GPG verifier: %s", err)
	}

	err = repo.Fetch(context.downloader, verifier)
	if err != nil {
		return fmt.Errorf("unable to update: %s", err)
	}

	packageCollection := debian.NewPackageCollection(context.database)

	err = repo.Download(context.downloader, packageCollection, context.packageRepository, ignoreMismatch)
	if err != nil {
		return fmt.Errorf("unable to update: %s", err)
	}

	err = repoCollection.Update(repo)
	if err != nil {
		return fmt.Errorf("unable to update: %s", err)
	}

	fmt.Printf("\nMirror `%s` has been successfully updated.\n", repo.Name)
	return err
}
Example #9
0
func aptlyMirrorDrop(cmd *commander.Command, args []string) error {
	var err error
	if len(args) != 1 {
		cmd.Usage()
		return err
	}

	name := args[0]

	repoCollection := debian.NewRemoteRepoCollection(context.database)
	repo, err := repoCollection.ByName(name)
	if err != nil {
		return fmt.Errorf("unable to drop: %s", err)
	}

	force := cmd.Flag.Lookup("force").Value.Get().(bool)
	if !force {
		snapshotCollection := debian.NewSnapshotCollection(context.database)
		snapshots := snapshotCollection.ByRemoteRepoSource(repo)

		if len(snapshots) > 0 {
			fmt.Printf("Mirror `%s` was used to create following snapshots:\n", repo.Name)
			for _, snapshot := range snapshots {
				fmt.Printf(" * %s\n", snapshot)
			}

			return fmt.Errorf("won't delete mirror with snapshots, use -force to override")
		}
	}

	err = repoCollection.Drop(repo)
	if err != nil {
		return fmt.Errorf("unable to drop: %s", err)
	}

	fmt.Printf("Mirror `%s` has been removed.\n", repo.Name)

	return err
}
Example #10
0
func aptlyMirrorShow(cmd *commander.Command, args []string) {
	if len(args) != 1 {
		cmd.Usage()
		return
	}

	name := args[0]

	repoCollection := debian.NewRemoteRepoCollection(context.database)
	repo, err := repoCollection.ByName(name)
	if err != nil {
		log.Fatalf("Unable to show: %s", err)
	}

	err = repoCollection.LoadComplete(repo)
	if err != nil {
		log.Fatalf("Unable to show: %s", err)
	}

	fmt.Printf("Name: %s\n", repo.Name)
	fmt.Printf("Archive Root URL: %s\n", repo.ArchiveRoot)
	fmt.Printf("Distribution: %s\n", repo.Distribution)
	fmt.Printf("Components: %s\n", strings.Join(repo.Components, ", "))
	fmt.Printf("Architectures: %s\n", strings.Join(repo.Architectures, ", "))
	if repo.LastDownloadDate.IsZero() {
		fmt.Printf("Last update: never\n")
	} else {
		fmt.Printf("Last update: %s\n", repo.LastDownloadDate.Format("2006-01-02 15:04:05 MST"))
		fmt.Printf("Number of packages: %d\n", repo.NumPackages())
	}

	fmt.Printf("\nInformation from release file:\n")
	for name, value := range repo.Meta {
		fmt.Printf("%s: %s\n", name, value)
	}
}
Example #11
0
func aptlyRepoMoveCopyImport(cmd *commander.Command, args []string) error {
	var err error
	if len(args) < 3 {
		cmd.Usage()
		return err
	}

	command := cmd.Name()

	localRepoCollection := debian.NewLocalRepoCollection(context.database)

	dstRepo, err := localRepoCollection.ByName(args[1])
	if err != nil {
		return fmt.Errorf("unable to %s: %s", command, err)
	}

	err = localRepoCollection.LoadComplete(dstRepo)
	if err != nil {
		return fmt.Errorf("unable to %s: %s", command, err)
	}

	var (
		srcRefList *debian.PackageRefList
		srcRepo    *debian.LocalRepo
	)

	if command == "copy" || command == "move" {
		srcRepo, err = localRepoCollection.ByName(args[0])
		if err != nil {
			return fmt.Errorf("unable to %s: %s", command, err)
		}

		if srcRepo.UUID == dstRepo.UUID {
			return fmt.Errorf("unable to %s: source and destination are the same", command)
		}

		err = localRepoCollection.LoadComplete(srcRepo)
		if err != nil {
			return fmt.Errorf("unable to %s: %s", command, err)
		}

		srcRefList = srcRepo.RefList()
	} else if command == "import" {
		repoCollection := debian.NewRemoteRepoCollection(context.database)

		srcRepo, err := repoCollection.ByName(args[0])
		if err != nil {
			return fmt.Errorf("unable to %s: %s", command, err)
		}

		err = repoCollection.LoadComplete(srcRepo)
		if err != nil {
			return fmt.Errorf("unable to %s: %s", command, err)
		}

		if srcRepo.RefList() == nil {
			return fmt.Errorf("unable to %s: mirror not updated", command)
		}

		srcRefList = srcRepo.RefList()
	} else {
		panic("unexpected command")
	}

	context.progress.Printf("Loading packages...\n")

	packageCollection := debian.NewPackageCollection(context.database)
	dstList, err := debian.NewPackageListFromRefList(dstRepo.RefList(), packageCollection)
	if err != nil {
		return fmt.Errorf("unable to load packages: %s", err)
	}

	srcList, err := debian.NewPackageListFromRefList(srcRefList, packageCollection)
	if err != nil {
		return fmt.Errorf("unable to load packages: %s", err)
	}

	srcList.PrepareIndex()

	var architecturesList []string

	withDeps := cmd.Flag.Lookup("with-deps").Value.Get().(bool)

	if withDeps {
		dstList.PrepareIndex()

		// Calculate architectures
		if len(context.architecturesList) > 0 {
			architecturesList = context.architecturesList
		} else {
			architecturesList = dstList.Architectures(false)
		}

		sort.Strings(architecturesList)

		if len(architecturesList) == 0 {
			return fmt.Errorf("unable to determine list of architectures, please specify explicitly")
		}
	}

	toProcess, err := srcList.Filter(args[2:], withDeps, dstList, context.dependencyOptions, architecturesList)
	if err != nil {
		return fmt.Errorf("unable to %s: %s", command, err)
	}

	var verb string

	if command == "move" {
		verb = "moved"
	} else if command == "copy" {
		verb = "copied"
	} else if command == "import" {
		verb = "imported"
	}

	err = toProcess.ForEach(func(p *debian.Package) error {
		err = dstList.Add(p)
		if err != nil {
			return err
		}

		if command == "move" {
			srcList.Remove(p)
		}
		context.progress.ColoredPrintf("@g[o]@| %s %s", p, verb)
		return nil
	})
	if err != nil {
		return fmt.Errorf("unable to %s: %s", command, err)
	}

	if cmd.Flag.Lookup("dry-run").Value.Get().(bool) {
		context.progress.Printf("\nChanges not saved, as dry run has been requested.\n")
	} else {
		dstRepo.UpdateRefList(debian.NewPackageRefListFromPackageList(dstList))

		err = localRepoCollection.Update(dstRepo)
		if err != nil {
			return fmt.Errorf("unable to save: %s", err)
		}

		if command == "move" {
			srcRepo.UpdateRefList(debian.NewPackageRefListFromPackageList(srcList))

			err = localRepoCollection.Update(srcRepo)
			if err != nil {
				return fmt.Errorf("unable to save: %s", err)
			}
		}
	}

	return err
}
Example #12
0
func aptlyGraph(cmd *commander.Command, args []string) error {
	var err error

	graph := gographviz.NewGraph()
	graph.SetDir(true)
	graph.SetName("aptly")

	existingNodes := map[string]bool{}

	fmt.Printf("Loading mirrors...\n")

	repoCollection := debian.NewRemoteRepoCollection(context.database)

	err = repoCollection.ForEach(func(repo *debian.RemoteRepo) error {
		err := repoCollection.LoadComplete(repo)
		if err != nil {
			return err
		}

		graph.AddNode("aptly", graphvizEscape(repo.UUID), map[string]string{
			"shape":     "Mrecord",
			"style":     "filled",
			"fillcolor": "darkgoldenrod1",
			"label": graphvizEscape(fmt.Sprintf("{Mirror %s|url: %s|dist: %s|comp: %s|arch: %s|pkgs: %d}",
				repo.Name, repo.ArchiveRoot, repo.Distribution, strings.Join(repo.Components, ", "),
				strings.Join(repo.Architectures, ", "), repo.NumPackages())),
		})
		existingNodes[repo.UUID] = true
		return nil
	})

	if err != nil {
		return err
	}

	fmt.Printf("Loading local repos...\n")

	localRepoCollection := debian.NewLocalRepoCollection(context.database)

	err = localRepoCollection.ForEach(func(repo *debian.LocalRepo) error {
		err := localRepoCollection.LoadComplete(repo)
		if err != nil {
			return err
		}

		graph.AddNode("aptly", graphvizEscape(repo.UUID), map[string]string{
			"shape":     "Mrecord",
			"style":     "filled",
			"fillcolor": "mediumseagreen",
			"label": graphvizEscape(fmt.Sprintf("{Repo %s|comment: %s|pkgs: %d}",
				repo.Name, repo.Comment, repo.NumPackages())),
		})
		existingNodes[repo.UUID] = true
		return nil
	})

	if err != nil {
		return err
	}

	fmt.Printf("Loading snapshots...\n")

	snapshotCollection := debian.NewSnapshotCollection(context.database)

	snapshotCollection.ForEach(func(snapshot *debian.Snapshot) error {
		existingNodes[snapshot.UUID] = true
		return nil
	})

	err = snapshotCollection.ForEach(func(snapshot *debian.Snapshot) error {
		err := snapshotCollection.LoadComplete(snapshot)
		if err != nil {
			return err
		}

		description := snapshot.Description
		if snapshot.SourceKind == "repo" {
			description = "Snapshot from repo"
		}

		graph.AddNode("aptly", graphvizEscape(snapshot.UUID), map[string]string{
			"shape":     "Mrecord",
			"style":     "filled",
			"fillcolor": "cadetblue1",
			"label":     graphvizEscape(fmt.Sprintf("{Snapshot %s|%s|pkgs: %d}", snapshot.Name, description, snapshot.NumPackages())),
		})

		if snapshot.SourceKind == "repo" || snapshot.SourceKind == "local" || snapshot.SourceKind == "snapshot" {
			for _, uuid := range snapshot.SourceIDs {
				_, exists := existingNodes[uuid]
				if exists {
					graph.AddEdge(graphvizEscape(uuid), "", graphvizEscape(snapshot.UUID), "", true, nil)
				}
			}
		}
		return nil
	})

	if err != nil {
		return err
	}

	fmt.Printf("Loading published repos...\n")

	publishedCollection := debian.NewPublishedRepoCollection(context.database)

	publishedCollection.ForEach(func(repo *debian.PublishedRepo) error {
		graph.AddNode("aptly", graphvizEscape(repo.UUID), map[string]string{
			"shape":     "Mrecord",
			"style":     "filled",
			"fillcolor": "darkolivegreen1",
			"label":     graphvizEscape(fmt.Sprintf("{Published %s/%s|comp: %s|arch: %s}", repo.Prefix, repo.Distribution, repo.Component, strings.Join(repo.Architectures, ", "))),
		})

		_, exists := existingNodes[repo.SnapshotUUID]
		if exists {
			graph.AddEdge(graphvizEscape(repo.SnapshotUUID), "", graphvizEscape(repo.UUID), "", true, nil)
		}

		return nil
	})

	fmt.Printf("Generating graph...\n")

	buf := bytes.NewBufferString(graph.String())

	tempfile, err := ioutil.TempFile("", "aptly-graph")
	if err != nil {
		return err
	}
	tempfile.Close()
	os.Remove(tempfile.Name())

	tempfilename := tempfile.Name() + ".png"

	command := exec.Command("dot", "-Tpng", "-o"+tempfilename)
	command.Stderr = os.Stderr

	stdin, err := command.StdinPipe()
	if err != nil {
		return err
	}

	err = command.Start()
	if err != nil {
		return fmt.Errorf("unable to execute dot: %s (is graphviz package installed?)", err)
	}

	_, err = io.Copy(stdin, buf)
	if err != nil {
		return err
	}

	err = stdin.Close()
	if err != nil {
		return err
	}

	err = command.Wait()
	if err != nil {
		return err
	}

	err = exec.Command("open", tempfilename).Run()
	if err != nil {
		fmt.Printf("Rendered to PNG file: %s\n", tempfilename)
		err = nil
	}

	return err
}
Example #13
0
func aptlyPublishSnapshot(cmd *commander.Command, args []string) error {
	var err error
	if len(args) < 1 || len(args) > 2 {
		cmd.Usage()
		return err
	}

	name := args[0]

	var prefix string
	if len(args) == 2 {
		prefix = args[1]
	} else {
		prefix = ""
	}

	publishedCollecton := debian.NewPublishedRepoCollection(context.database)

	snapshotCollection := debian.NewSnapshotCollection(context.database)
	snapshot, err := snapshotCollection.ByName(name)
	if err != nil {
		return fmt.Errorf("unable to publish: %s", err)
	}

	err = snapshotCollection.LoadComplete(snapshot)
	if err != nil {
		return fmt.Errorf("unable to publish: %s", err)
	}

	var sourceRepo *debian.RemoteRepo

	if snapshot.SourceKind == "repo" && len(snapshot.SourceIDs) == 1 {
		repoCollection := debian.NewRemoteRepoCollection(context.database)

		sourceRepo, _ = repoCollection.ByUUID(snapshot.SourceIDs[0])
	}

	component := cmd.Flag.Lookup("component").Value.String()
	if component == "" {
		if sourceRepo != nil && len(sourceRepo.Components) == 1 {
			component = sourceRepo.Components[0]
		} else {
			component = "main"
		}
	}

	distribution := cmd.Flag.Lookup("distribution").Value.String()
	if distribution == "" {
		if sourceRepo != nil {
			distribution = sourceRepo.Distribution
		}

		if distribution == "" {
			return fmt.Errorf("unable to guess distribution name, please specify explicitly")
		}
	}

	published, err := debian.NewPublishedRepo(prefix, distribution, component, context.architecturesList, snapshot)
	if err != nil {
		return fmt.Errorf("unable to publish: %s", err)
	}

	duplicate := publishedCollecton.CheckDuplicate(published)
	if duplicate != nil {
		publishedCollecton.LoadComplete(duplicate, snapshotCollection)
		return fmt.Errorf("prefix/distribution already used by another published repo: %s", duplicate)
	}

	signer, err := getSigner(cmd)
	if err != nil {
		return fmt.Errorf("unable to initialize GPG signer: %s", err)
	}

	packageCollection := debian.NewPackageCollection(context.database)
	err = published.Publish(context.packageRepository, packageCollection, signer)
	if err != nil {
		return fmt.Errorf("unable to publish: %s", err)
	}

	err = publishedCollecton.Add(published)
	if err != nil {
		return fmt.Errorf("unable to save to DB: %s", err)
	}

	if prefix != "" && !strings.HasSuffix(prefix, "/") {
		prefix += "/"
	}

	fmt.Printf("\nSnapshot %s has been successfully published.\nPlease setup your webserver to serve directory '%s' with autoindexing.\n",
		snapshot.Name, context.packageRepository.PublicPath())
	fmt.Printf("Now you can add following line to apt sources:\n")
	fmt.Printf("  deb http://your-server/%s %s %s\n", prefix, distribution, component)
	fmt.Printf("Don't forget to add your GPG key to apt with apt-key.\n")
	fmt.Printf("\nYou can also use `aptly serve` to publish your repositories over HTTP quickly.\n")

	return err
}
Example #14
0
// aptly db cleanup
func aptlyDbCleanup(cmd *commander.Command, args []string) error {
	var err error

	if len(args) != 0 {
		cmd.Usage()
		return err
	}

	// collect information about references packages...
	existingPackageRefs := debian.NewPackageRefList()

	context.downloader.GetProgress().Printf("Loading mirrors and snapshots...\n")
	repoCollection := debian.NewRemoteRepoCollection(context.database)
	err = repoCollection.ForEach(func(repo *debian.RemoteRepo) error {
		err := repoCollection.LoadComplete(repo)
		if err != nil {
			return err
		}
		existingPackageRefs = existingPackageRefs.Merge(repo.RefList(), false)
		return nil
	})
	if err != nil {
		return err
	}

	snapshotCollection := debian.NewSnapshotCollection(context.database)
	err = snapshotCollection.ForEach(func(snapshot *debian.Snapshot) error {
		err := snapshotCollection.LoadComplete(snapshot)
		if err != nil {
			return err
		}
		existingPackageRefs = existingPackageRefs.Merge(snapshot.RefList(), false)
		return nil
	})
	if err != nil {
		return err
	}

	// ... and compare it to the list of all packages
	context.downloader.GetProgress().Printf("Loading list of all packages...\n")
	packageCollection := debian.NewPackageCollection(context.database)
	allPackageRefs := packageCollection.AllPackageRefs()

	toDelete := allPackageRefs.Substract(existingPackageRefs)

	// delete packages that are no longer referenced
	context.downloader.GetProgress().Printf("Deleting unreferenced packages (%d)...\n", toDelete.Len())

	context.database.StartBatch()
	err = toDelete.ForEach(func(ref []byte) error {
		return packageCollection.DeleteByKey(ref)
	})
	if err != nil {
		return err
	}

	err = context.database.FinishBatch()
	if err != nil {
		return fmt.Errorf("unable to write to DB: %s", err)
	}

	// now, build a list of files that should be present in Repository (package pool)
	context.downloader.GetProgress().Printf("Building list of files referenced by packages...\n")
	referencedFiles := make([]string, 0, existingPackageRefs.Len())
	context.downloader.GetProgress().InitBar(int64(existingPackageRefs.Len()), false)

	err = existingPackageRefs.ForEach(func(key []byte) error {
		pkg, err := packageCollection.ByKey(key)
		if err != nil {
			return err
		}
		paths, err := pkg.FilepathList(context.packageRepository)
		if err != nil {
			return err
		}
		referencedFiles = append(referencedFiles, paths...)
		context.downloader.GetProgress().AddBar(1)

		return nil
	})
	if err != nil {
		return err
	}

	sort.Strings(referencedFiles)
	context.downloader.GetProgress().ShutdownBar()

	// build a list of files in the package pool
	context.downloader.GetProgress().Printf("Building list of files in package pool...\n")
	existingFiles, err := context.packageRepository.PoolFilepathList(context.downloader.GetProgress())
	if err != nil {
		return fmt.Errorf("unable to collect file paths: %s", err)
	}

	// find files which are in the pool but not referenced by packages
	filesToDelete := utils.StrSlicesSubstract(existingFiles, referencedFiles)

	// delete files that are no longer referenced
	context.downloader.GetProgress().Printf("Deleting unreferenced files (%d)...\n", len(filesToDelete))

	if len(filesToDelete) > 0 {
		context.downloader.GetProgress().InitBar(int64(len(filesToDelete)), false)
		totalSize := int64(0)
		for _, file := range filesToDelete {
			size, err := context.packageRepository.PoolRemove(file)
			if err != nil {
				return err
			}

			context.downloader.GetProgress().AddBar(1)
			totalSize += size
		}
		context.downloader.GetProgress().ShutdownBar()

		context.downloader.GetProgress().Printf("Disk space freed: %.2f GiB...\n", float64(totalSize)/1024.0/1024.0/1024.0)
	}
	return err
}