示例#1
0
文件: cab.go 项目: kylelemons/rx
func buildCabinet(repo *graph.Repository, id string) error {
	// Build the cabinet data
	head, err := repo.Head()
	if err != nil {
		return fmt.Errorf("build: get repo head: %s", err)
	}
	data := &CabFile{
		Repo:    repo.String(),
		Created: time.Now(),
		Head:    head,
	}
	deps, err := Deps.RepoDeps(repo)
	if err != nil {
		return fmt.Errorf("build: scan dependencies: %s", err)
	}
	for _, dep := range deps {
		rv, err := NewRepoVersion(dep)
		if err != nil {
			return fmt.Errorf("build: %s", err)
		}
		data.Deps = append(data.Deps, rv)
	}

	if *cabTest {
		// Test the packages in the repository
		test := exec.Command("go", "test", repo.String())
		test.Dir = os.TempDir()
		test.Stdout = os.Stdout
		test.Stderr = os.Stderr
		if err := test.Run(); err != nil {
			return fmt.Errorf("build: `go test` failed: %s", err)
		}
	}

	// Make the $REPO/.rx directory
	repoRx := filepath.Join(repo.Root, ".rx")
	if err := os.MkdirAll(repoRx, 0755); err != nil {
		return fmt.Errorf("build: create .rx: %s", err)
	}

	filename := filepath.Join(repoRx, "cabinet-"+id)

	// Open the file, but fail if it already exists
	file, err := os.OpenFile(filename, os.O_WRONLY|os.O_CREATE|os.O_EXCL, 0644)
	if err != nil {
		return fmt.Errorf("build: open cabinet: %s", err)
	}
	defer file.Close()

	if err := gob.NewEncoder(file).Encode(data); err != nil {
		return fmt.Errorf("build: encoding cabinet: %s", err)
	}

	log.Printf("Cabinet written to %q", filename)
	return nil
}
示例#2
0
文件: cab.go 项目: kylelemons/rx
// Apply attempts to locate the repository and pin it to the head version.
func (dep *RepoVersion) Apply() error {
	// Find the repository
	var repo *graph.Repository
	for _, pkg := range dep.Packages {
		// Make sure the package is installed and up-to-date
		get := exec.Command("go", "get", "-d", pkg)
		get.Dir = os.TempDir()
		get.Stdout = os.Stdout
		get.Stderr = os.Stderr
		if err := get.Run(); err != nil {
			continue
		}

		// Scan for new packages
		if err := Deps.Scan(dep.Pattern); err != nil {
			continue
		}

		// See if we found the package we wanted
		p, ok := Deps.Package[pkg]
		if !ok {
			continue
		}

		// Get the repository
		r, ok := Deps.Repository[p.RepoRoot]
		if !ok {
			continue
		}

		repo = r
		break
	}
	if repo == nil {
		return fmt.Errorf("apply(%q@%q): unable to locate repository", dep.Pattern, dep.Head)
	}

	// Get fallback in case the update fails
	fallback, err := repo.Head()
	if err != nil {
		return fmt.Errorf("apply(%q@%q): unable to determine fallback version", dep.Pattern, dep.Head)
	}

	// Pin the version
	if err := repo.ToRev(dep.Head); err != nil {
		if ferr := repo.ToRev(fallback); ferr != nil {
			return fmt.Errorf("apply(%q): pin(%q) [%s] and fallback(%q) [%s] failed",
				dep.Pattern, dep.Head, err, fallback, ferr)
		}
		return fmt.Errorf("apply(%q@%q): pin failed: %s", dep.Pattern, dep.Head, err)
	}

	log.Printf("Pinned %s @ %s", dep.Pattern, dep.Head)
	return nil
}
示例#3
0
文件: cab.go 项目: kylelemons/rx
// NewRepoVersion creates a repo version object suitable for storing into cabinets, etc.
func NewRepoVersion(repo *graph.Repository) (*RepoVersion, error) {
	head, err := repo.Head()
	if err != nil {
		return nil, fmt.Errorf("get %s head: %s", repo, err)
	}
	return &RepoVersion{
		Pattern:  repo.String(),
		Packages: repo.Packages,
		Head:     head,
	}, nil
}