func installFn(cmd *Command, args []string) error {
configureLogging()
if len(args) > 0 {
return fmt.Errorf("Too many arguments for 'install'")
}
// set unset paramters to the defaults
if lockFileName == "" {
lockFileName = defaultLockFileName
}
if targetPath == "" {
targetPath = defaultTargetPath
}
log.Debug("lock file: %v", lockFileName)
log.Debug("target path: %v", targetPath)
// get dependencies from the lockfile
deplist, err := LoadGrapnelDepsfile(lockFileName)
if err != nil {
return err
} else if deplist == nil {
// TODO: fail over to update instead?
return fmt.Errorf("Cannot open lock file: '%s'", lockFileName)
}
log.Info("loaded %d dependency definitions", len(deplist))
log.Info("installing to: %v", targetPath)
if err := os.MkdirAll(targetPath, 0755); err != nil {
return err
}
libs := []*Library{}
// cleanup
defer func() {
for _, lib := range libs {
lib.Destroy()
}
}()
// resolve all the dependencies
resolver, err := getResolver()
if err != nil {
return err
}
libs, err = resolver.ResolveDependencies(deplist)
if err != nil {
return err
}
// install all the dependencies
log.Info("Resolved %v dependencies. Installing.", len(libs))
resolver.InstallLibraries(targetPath, libs)
log.Info("Install complete")
return nil
}
func StartGitDaemon(basePath string) error {
if gitDaemon != nil {
return nil
}
cwd, err := os.Getwd()
if err != nil {
return err
}
log.Info("Using CWD: %v", basePath)
cmd := exec.Command("git", "daemon",
"--reuseaddr",
"--base-path="+basePath,
"--port=9999",
"--export-all",
"--informative-errors",
"--verbose")
var outbuf bytes.Buffer
cmd.Stdout = bufio.NewWriter(&outbuf)
cmd.Stderr = cmd.Stdout
cmd.Dir = cwd
// start the daemon
if err = cmd.Start(); err != nil {
return err
}
gitDaemon = cmd
// wait for the daemon to be ready to use
for {
data := outbuf.String()
if strings.Contains(data, "Ready to rumble") {
<-time.After(1 * time.Second) // wait a second
os.Stdout.WriteString(data)
cmd.Stdout = os.Stdout
cmd.Stderr = os.Stderr
break
}
}
// wait for it to halt asynchronously
go func() {
log.Info("git daemon stopped: %v", gitDaemon.Wait())
gitDaemon = nil
}()
return nil
}
func TestGitSource(t *testing.T) {
InitTestLogging()
// construct a repo
basePath := BuildTestGitRepo("gitrepo")
defer os.Remove(basePath)
// start a daemon to serve the repo
defer StopGitDaemon()
if err := StartGitDaemon(basePath); err != nil {
t.Error("%v", err)
}
// map a dependency to the repo
var err error
var dep *Dependency
dep, err = NewDependency("foo/bar/baz", "git://localhost:9999/gitrepo", "1.0")
if err != nil {
t.Error("%v", err)
}
log.Info("version: %v", dep.VersionSpec.String())
// test the resolver
libsrc := &GitSCM{}
if _, err = libsrc.Resolve(dep); err != nil {
t.Error("%v", err)
}
}
// Copies a file tree from src to dest
func CopyFileTree(dest string, src string) error {
return filepath.Walk(src, func(path string, info os.FileInfo, err error) error {
if err != nil {
log.Info("%s", err.Error())
return fmt.Errorf("Error while walking file tree")
}
relativePath, _ := filepath.Rel(src, path)
destPath := filepath.Join(dest, relativePath)
if info.IsDir() {
// create target directory if it's not already there
if !Exists(destPath) {
if err := os.MkdirAll(destPath, 0755); err != nil {
return err
}
}
} else {
log.Debug("Copying: %s", destPath)
if (info.Mode() & os.ModeSymlink) == os.ModeSymlink {
if err := CopySymlink(path, destPath); err != nil {
return fmt.Errorf("Could not copy symlink '%s' to '%s'", path, destPath)
}
} else if err := CopyFileContents(path, destPath); err != nil {
return fmt.Errorf("Could not copy file '%s' to '%s'", path, destPath)
}
}
return nil
})
}
func GetDirectories(src string) ([]string, error) {
results := []string{}
err := filepath.Walk(src, func(path string, info os.FileInfo, err error) error {
if err != nil {
log.Info("%s", err.Error())
return fmt.Errorf("Error while walking file tree")
}
relativePath, _ := filepath.Rel(src, path)
if info.IsDir() && relativePath != "." {
results = append(results, relativePath)
}
return nil
})
return results, err
}
func updateFn(cmd *Command, args []string) error {
configureLogging()
if len(args) > 0 {
return fmt.Errorf("Too many arguments for 'update'")
}
// set unset paramters to the defaults
if packageFileName == "" {
packageFileName = defaultPackageFileName
if lockFileName == "" {
// set to default iff there was no package filename set
lockFileName = defaultLockFileName
}
} else if lockFileName == "" {
// compose a new lock file path out of the old package path
lockFileName = path.Join(path.Dir(packageFileName), "grapnel-lock.toml")
}
if targetPath == "" {
targetPath = defaultTargetPath
}
log.Debug("package file: %v", packageFileName)
log.Debug("lock file: %v", lockFileName)
log.Debug("target path: %v", targetPath)
// get dependencies from the grapnel file
log.Info("loading package file: '%s'", packageFileName)
deplist, err := LoadGrapnelDepsfile(packageFileName)
if err != nil {
return err
} else if deplist == nil {
// TODO: fail over to update instead?
return fmt.Errorf("Cannot open grapnel file: '%s'", packageFileName)
}
log.Info("loaded %d dependency definitions", len(deplist))
// open it now before we expend any real effort
lockFile, err := os.Create(lockFileName)
defer lockFile.Close()
if err != nil {
log.Error("Cannot open lock file: '%s'", lockFileName)
return err
}
log.Info("installing to: %v", targetPath)
if err := os.MkdirAll(targetPath, 0755); err != nil {
return err
}
libs := []*Library{}
// cleanup
defer func() {
for _, lib := range libs {
lib.Destroy()
}
}()
// resolve all the dependencies
resolver, err := getResolver()
if err != nil {
return err
}
libs, err = resolver.ResolveDependencies(deplist)
if err != nil {
return err
}
// install all the dependencies
log.Info("Resolved %v dependencies. Installing.", len(libs))
resolver.InstallLibraries(targetPath, libs)
// write the library data out
log.Info("Writing lock file")
for _, lib := range libs {
lib.ToToml(lockFile)
}
if createDsd {
log.Info("Writing dsd file")
dsdFileName := path.Join(path.Dir(lockFileName), "grapnel-dsd.sh")
if err := resolver.ToDsd(dsdFileName, libs); err != nil {
return err
}
}
log.Info("Update complete")
return nil
}
func (self *GitSCM) Resolve(dep *Dependency) (*Library, error) {
lib := NewLibrary(dep)
// fix the tag, and default branch
if lib.Branch == "" {
lib.Branch = "master"
}
if lib.Tag == "" {
lib.Tag = "HEAD"
}
log.Info("Fetching Git Dependency: '%s'", lib.Import)
// create a dedicated directory and a context for commands
tempRoot, err := ioutil.TempDir("", "")
if err != nil {
return nil, err
}
lib.TempDir = tempRoot
cmd := NewRunContext(tempRoot)
// use the configured url and acquire the depified branch
log.Info("Fetching remote data for %s", lib.Import)
if lib.Url == nil {
// try all supported protocols against a URL composed from the import
for _, protocol := range []string{"http", "https", "git", "ssh"} {
packageUrl := protocol + "://" + lib.Import
log.Warn("Synthesizing url from import: '%s'", packageUrl)
if err := cmd.Run("git", "clone", packageUrl, "-b", lib.Branch, tempRoot); err != nil {
log.Warn("Failed to fetch: '%s'", packageUrl)
continue
}
lib.Url, _ = url.Parse(packageUrl) // pin URL
break
}
if err != nil {
return nil, fmt.Errorf("Cannot download dependency: '%s'", lib.Import)
}
} else if err := cmd.Run("git", "clone", lib.Url.String(), "-b", lib.Branch, tempRoot); err != nil {
return nil, fmt.Errorf("Cannot download dependency: '%s'", lib.Url.String())
}
// move to the specified commit/tag/hash
// check out a depific commit - may be a tag, commit hash or HEAD
if err := cmd.Run("git", "checkout", lib.Tag); err != nil {
return nil, fmt.Errorf("Failed to checkout tag: '%s'", lib.Tag)
}
// Pin the Tag to a commit hash if we just have "HEAD" as the 'Tag'
if lib.Tag == "HEAD" {
if err := cmd.Run("git", "rev-list", "--all", "--max-count=1"); err != nil {
return nil, fmt.Errorf("Failed to checkout tag: '%s'", lib.Tag)
} else {
lib.Tag = strings.TrimSpace(cmd.CombinedOutput)
}
}
// Stop now if we have no semantic version information
if lib.VersionSpec.IsUnversioned() {
lib.Version = NewVersion(-1, -1, -1)
log.Warn("Resolved: %v (unversioned)", lib.Import)
stripGitRepo(lib.TempDir)
return lib, nil
}
// find latest version match
if err := cmd.Run("git", "for-each-ref", "refs/tags", "--sort=taggerdate",
"--format=%(refname:short)"); err != nil {
return nil, fmt.Errorf("Failed to acquire ref list for depenency")
} else {
for _, line := range strings.Split(cmd.CombinedOutput, "\n") {
log.Debug("%v", line)
if ver, err := ParseVersion(line); err == nil {
log.Debug("ver: %v", ver)
if dep.VersionSpec.IsSatisfiedBy(ver) {
lib.Tag = line
lib.Version = ver
// move to this tag in the history
if err := cmd.Run("git", "checkout", lib.Tag); err != nil {
return nil, fmt.Errorf("Failed to checkout tag: '%s'", lib.Tag)
}
break
}
} else {
log.Debug("Parse git tag err: %v", err)
}
}
}
// fail if the tag cannot be determined.
if lib.Version == nil {
return nil, fmt.Errorf("Cannot find a tag for dependency version specification: %v.", lib.VersionSpec)
}
log.Info("Resolved: %s %v", lib.Import, lib.Version)
stripGitRepo(lib.TempDir)
return lib, nil
}
func (self *ArchiveSCM) Resolve(dep *Dependency) (*Library, error) {
lib := NewLibrary(dep)
// create a dedicated directory and a context for commands
tempRoot, err := ioutil.TempDir("", "")
if err != nil {
return nil, err
}
lib.TempDir = tempRoot
cmd := NewRunContext(tempRoot)
// prep archive file for write
filename := filepath.Join(tempRoot, filepath.Base(lib.Dependency.Url.Path))
file, err := os.OpenFile(filename, os.O_CREATE, 0)
if err != nil {
return nil, fmt.Errorf("Cannot open archive for writing: %v", err)
}
defer file.Close()
// get the targeted archive
response, err := http.Get(lib.Dependency.Url.String())
if err != nil {
return nil, fmt.Errorf("Cannot download archive: %v", err)
}
if err := response.Write(file); err != nil {
return nil, fmt.Errorf("Cannot write archive: %v", err)
}
file.Close()
log.Info("Wrote: %s", filename)
// extract the file
// TODO: change to using built-in libraries whenever possible.
switch filepath.Ext(filename) {
case "zip":
cmd.Run("unzip", filename)
case "tar.gz":
cmd.Run("tar", "xzf", filename)
case "tar":
cmd.Run("tar", "xf", filename)
}
os.Remove(filename)
// Stop now if we have no semantic version information
if lib.VersionSpec.IsUnversioned() {
lib.Version = NewVersion(-1, -1, -1)
log.Warn("Resolved: %v (unversioned)", lib.Import)
return lib, nil
}
// get the version number from the filename
if ver, err := ParseVersion(filepath.Base(filename)); err == nil {
log.Debug("ver: %v", ver)
if dep.VersionSpec.IsSatisfiedBy(ver) {
lib.Version = ver
}
} else {
log.Debug("Parse archive version err: %v", err)
}
// fail if the tag cannot be determined.
if lib.Version == nil {
return nil, fmt.Errorf("Cannot find a version specification on archive: %v.", lib.VersionSpec)
}
log.Info("Resolved: %s %v", lib.Import, lib.Version)
return lib, nil
}
