func getWizard(dep *cfg.Dependency) {
remote := dep.Remote()
// Lookup dependency info and store in cache.
msg.Info("--> Gathering release information for %s", dep.Name)
wizardFindVersions(dep)
memlatest := cache.MemLatest(remote)
if memlatest != "" {
dres := wizardAskLatest(memlatest, dep)
if dres {
dep.Reference = memlatest
sv, err := semver.NewVersion(dep.Reference)
if err == nil {
res := wizardAskRange(sv, dep)
if res == "m" {
dep.Reference = "^" + sv.String()
} else if res == "p" {
dep.Reference = "~" + sv.String()
}
}
}
}
}
// VcsGet figures out how to fetch a dependency, and then gets it.
//
// VcsGet installs into the cache.
func VcsGet(dep *cfg.Dependency) error {
key, err := cp.Key(dep.Remote())
if err != nil {
msg.Die("Cache key generation error: %s", err)
}
location := cp.Location()
d := filepath.Join(location, "src", key)
repo, err := dep.GetRepo(d)
if err != nil {
return err
}
// If the directory does not exist this is a first cache.
if _, err = os.Stat(d); os.IsNotExist(err) {
msg.Debug("Adding %s to the cache for the first time", dep.Name)
err = repo.Get()
if err != nil {
return err
}
branch := findCurrentBranch(repo)
if branch != "" {
msg.Debug("Saving default branch for %s", repo.Remote())
c := cp.RepoInfo{DefaultBranch: branch}
err = cp.SaveRepoData(key, c)
if err == cp.ErrCacheDisabled {
msg.Debug("Unable to cache default branch because caching is disabled")
} else if err != nil {
msg.Debug("Error saving %s to cache. Error: %s", repo.Remote(), err)
}
}
} else {
msg.Debug("Updating %s in the cache", dep.Name)
err = repo.Update()
if err != nil {
return err
}
}
return nil
}
func wizardFindVersions(d *cfg.Dependency) {
l := cache.Location()
remote := d.Remote()
key, err := cache.Key(remote)
if err != nil {
msg.Debug("Problem generating cache key for %s: %s", remote, err)
return
}
local := filepath.Join(l, "src", key)
repo, err := vcs.NewRepo(remote, local)
if err != nil {
msg.Debug("Problem getting repo instance: %s", err)
return
}
var useLocal bool
if _, err = os.Stat(local); err == nil {
useLocal = true
}
// Git endpoints allow for querying without fetching the codebase locally.
// We try that first to avoid fetching right away. Is this premature
// optimization?
cc := true
if !useLocal && repo.Vcs() == vcs.Git {
out, err2 := exec.Command("git", "ls-remote", remote).CombinedOutput()
if err2 == nil {
cache.MemTouch(remote)
cc = false
lines := strings.Split(string(out), "\n")
for _, i := range lines {
ti := strings.TrimSpace(i)
if found := createGitParseVersion.FindString(ti); found != "" {
tg := strings.TrimPrefix(strings.TrimSuffix(found, "^{}"), "tags/")
cache.MemPut(remote, tg)
if d.Reference != "" && strings.HasPrefix(ti, d.Reference) {
cache.MemSetCurrent(remote, tg)
}
}
}
}
}
if cc {
cache.Lock(key)
cache.MemTouch(remote)
if _, err = os.Stat(local); os.IsNotExist(err) {
repo.Get()
branch := findCurrentBranch(repo)
c := cache.RepoInfo{DefaultBranch: branch}
err = cache.SaveRepoData(key, c)
if err != nil {
msg.Debug("Error saving cache repo details: %s", err)
}
} else {
repo.Update()
}
tgs, err := repo.Tags()
if err != nil {
msg.Debug("Problem getting tags: %s", err)
} else {
for _, v := range tgs {
cache.MemPut(remote, v)
}
}
if d.Reference != "" && repo.IsReference(d.Reference) {
tgs, err = repo.TagsFromCommit(d.Reference)
if err != nil {
msg.Debug("Problem getting tags for commit: %s", err)
} else {
if len(tgs) > 0 {
for _, v := range tgs {
if !(repo.Vcs() == vcs.Hg && v == "tip") {
cache.MemSetCurrent(remote, v)
}
}
}
}
}
cache.Unlock(key)
}
}
// VcsUpdate updates to a particular checkout based on the VCS setting.
func VcsUpdate(dep *cfg.Dependency, force bool, updated *UpdateTracker) error {
// If the dependency has already been pinned we can skip it. This is a
// faster path so we don't need to resolve it again.
if dep.Pin != "" {
msg.Debug("Dependency %s has already been pinned. Fetching updates skipped.", dep.Name)
return nil
}
if updated.Check(dep.Name) {
msg.Debug("%s was already updated, skipping.", dep.Name)
return nil
}
updated.Add(dep.Name)
if filterArchOs(dep) {
msg.Info("%s is not used for %s/%s.\n", dep.Name, runtime.GOOS, runtime.GOARCH)
return nil
}
key, err := cp.Key(dep.Remote())
if err != nil {
msg.Die("Cache key generation error: %s", err)
}
location := cp.Location()
dest := filepath.Join(location, "src", key)
// If destination doesn't exist we need to perform an initial checkout.
if _, err := os.Stat(dest); os.IsNotExist(err) {
msg.Info("--> Fetching %s.", dep.Name)
if err = VcsGet(dep); err != nil {
msg.Warn("Unable to checkout %s\n", dep.Name)
return err
}
} else {
// At this point we have a directory for the package.
msg.Info("--> Fetching updates for %s.", dep.Name)
// When the directory is not empty and has no VCS directory it's
// a vendored files situation.
empty, err := gpath.IsDirectoryEmpty(dest)
if err != nil {
return err
}
_, err = v.DetectVcsFromFS(dest)
if empty == true && err == v.ErrCannotDetectVCS {
msg.Warn("Cached version of %s is an empty directory. Fetching a new copy of the dependency.", dep.Name)
msg.Debug("Removing empty directory %s", dest)
err := os.RemoveAll(dest)
if err != nil {
return err
}
if err = VcsGet(dep); err != nil {
msg.Warn("Unable to checkout %s\n", dep.Name)
return err
}
} else {
repo, err := dep.GetRepo(dest)
// Tried to checkout a repo to a path that does not work. Either the
// type or endpoint has changed. Force is being passed in so the old
// location can be removed and replaced with the new one.
// Warning, any changes in the old location will be deleted.
// TODO: Put dirty checking in on the existing local checkout.
if (err == v.ErrWrongVCS || err == v.ErrWrongRemote) && force == true {
newRemote := dep.Remote()
msg.Warn("Replacing %s with contents from %s\n", dep.Name, newRemote)
rerr := os.RemoveAll(dest)
if rerr != nil {
return rerr
}
if err = VcsGet(dep); err != nil {
msg.Warn("Unable to checkout %s\n", dep.Name)
return err
}
repo, err = dep.GetRepo(dest)
if err != nil {
return err
}
} else if err != nil {
return err
} else if repo.IsDirty() {
return fmt.Errorf("%s contains uncommitted changes. Skipping update", dep.Name)
}
ver := dep.Reference
if ver == "" {
ver = defaultBranch(repo)
}
// Check if the current version is a tag or commit id. If it is
// and that version is already checked out we can skip updating
// which is faster than going out to the Internet to perform
// an update.
if ver != "" {
version, err := repo.Version()
if err != nil {
return err
}
ib, err := isBranch(ver, repo)
if err != nil {
return err
}
// If the current version equals the ref and it's not a
// branch it's a tag or commit id so we can skip
// performing an update.
if version == ver && !ib {
msg.Debug("%s is already set to version %s. Skipping update.", dep.Name, dep.Reference)
return nil
}
}
if err := repo.Update(); err != nil {
msg.Warn("Download failed.\n")
return err
}
}
}
return nil
}
// VcsVersion set the VCS version for a checkout.
func VcsVersion(dep *cfg.Dependency) error {
// If the dependency has already been pinned we can skip it. This is a
// faster path so we don't need to resolve it again.
if dep.Pin != "" {
msg.Debug("Dependency %s has already been pinned. Setting version skipped.", dep.Name)
return nil
}
key, err := cp.Key(dep.Remote())
if err != nil {
msg.Die("Cache key generation error: %s", err)
}
location := cp.Location()
cwd := filepath.Join(location, "src", key)
// If there is no reference configured there is nothing to set.
if dep.Reference == "" {
// Before exiting update the pinned version
repo, err := dep.GetRepo(cwd)
if err != nil {
return err
}
dep.Pin, err = repo.Version()
if err != nil {
return err
}
return nil
}
// When the directory is not empty and has no VCS directory it's
// a vendored files situation.
empty, err := gpath.IsDirectoryEmpty(cwd)
if err != nil {
return err
}
_, err = v.DetectVcsFromFS(cwd)
if empty == false && err == v.ErrCannotDetectVCS {
return fmt.Errorf("Cache directory missing VCS information for %s", dep.Name)
}
repo, err := dep.GetRepo(cwd)
if err != nil {
return err
}
ver := dep.Reference
// References in Git can begin with a ^ which is similar to semver.
// If there is a ^ prefix we assume it's a semver constraint rather than
// part of the git/VCS commit id.
if repo.IsReference(ver) && !strings.HasPrefix(ver, "^") {
msg.Info("--> Setting version for %s to %s.\n", dep.Name, ver)
} else {
// Create the constraint first to make sure it's valid before
// working on the repo.
constraint, err := semver.NewConstraint(ver)
// Make sure the constriant is valid. At this point it's not a valid
// reference so if it's not a valid constrint we can exit early.
if err != nil {
msg.Warn("The reference '%s' is not valid\n", ver)
return err
}
// Get the tags and branches (in that order)
refs, err := getAllVcsRefs(repo)
if err != nil {
return err
}
// Convert and filter the list to semver.Version instances
semvers := getSemVers(refs)
// Sort semver list
sort.Sort(sort.Reverse(semver.Collection(semvers)))
found := false
for _, v := range semvers {
if constraint.Check(v) {
found = true
// If the constrint passes get the original reference
ver = v.Original()
break
}
}
if found {
msg.Info("--> Detected semantic version. Setting version for %s to %s.", dep.Name, ver)
} else {
msg.Warn("--> Unable to find semantic version for constraint %s %s", dep.Name, ver)
}
}
if err := repo.UpdateVersion(ver); err != nil {
return err
}
dep.Pin, err = repo.Version()
if err != nil {
return err
}
return nil
}
