// 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, err := cache.Location()
if err != nil {
msg.Debug("Problem detecting cache location: %s", err)
return
}
var remote string
if d.Repository != "" {
remote = d.Repository
} else {
remote = "https://" + d.Name
}
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)
}
}
// defaultBranch tries to ascertain the default branch for the given repo.
// Some repos will have multiple branches in them (e.g. Git) while others
// (e.g. Svn) will not.
func defaultBranch(repo v.Repo, home string) string {
// Svn and Bzr use different locations (paths or entire locations)
// for branches so we won't have a default branch.
if repo.Vcs() == v.Svn || repo.Vcs() == v.Bzr {
return ""
}
// Check the cache for a value.
key, kerr := cp.Key(repo.Remote())
var d cp.RepoInfo
if kerr == nil {
d, err := cp.RepoData(key)
if err == nil {
if d.DefaultBranch != "" {
return d.DefaultBranch
}
}
}
// If we don't have it in the store try some APIs
r := repo.Remote()
u, err := url.Parse(r)
if err != nil {
return ""
}
if u.Scheme == "" {
// Where there is no scheme we try urls like [email protected]:foo/bar
r = strings.Replace(r, ":", "/", -1)
r = "ssh://" + r
u, err = url.Parse(r)
if err != nil {
return ""
}
u.Scheme = ""
}
if u.Host == "github.com" {
parts := strings.Split(u.Path, "/")
if len(parts) != 2 {
return ""
}
api := fmt.Sprintf("https://api.github.com/repos/%s/%s", parts[0], parts[1])
resp, err := http.Get(api)
if err != nil {
return ""
}
defer resp.Body.Close()
if resp.StatusCode >= 300 || resp.StatusCode < 200 {
return ""
}
body, err := ioutil.ReadAll(resp.Body)
var data interface{}
err = json.Unmarshal(body, &data)
if err != nil {
return ""
}
gh := data.(map[string]interface{})
db := gh["default_branch"].(string)
if kerr == nil {
d.DefaultBranch = db
err := cp.SaveRepoData(key, d)
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)
}
}
return db
}
if u.Host == "bitbucket.org" {
parts := strings.Split(u.Path, "/")
if len(parts) != 2 {
return ""
}
api := fmt.Sprintf("https://bitbucket.org/api/1.0/repositories/%s/%s/main-branch/", parts[0], parts[1])
resp, err := http.Get(api)
if err != nil {
return ""
}
defer resp.Body.Close()
if resp.StatusCode >= 300 || resp.StatusCode < 200 {
return ""
}
body, err := ioutil.ReadAll(resp.Body)
var data interface{}
err = json.Unmarshal(body, &data)
if err != nil {
return ""
}
bb := data.(map[string]interface{})
db := bb["name"].(string)
if kerr == nil {
d.DefaultBranch = db
err := cp.SaveRepoData(key, d)
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)
}
}
return db
}
return ""
}
// VcsGet figures out how to fetch a dependency, and then gets it.
//
// VcsGet installs into the dest.
func VcsGet(dep *cfg.Dependency, dest, home string, cache, cacheGopath, useGopath bool) error {
// When not skipping the $GOPATH look in it for a copy of the package
if useGopath {
// Check if the $GOPATH has a viable version to use and if so copy to vendor
gps := gpath.Gopaths()
for _, p := range gps {
d := filepath.Join(p, "src", dep.Name)
if _, err := os.Stat(d); err == nil {
empty, err := gpath.IsDirectoryEmpty(d)
if empty || err != nil {
continue
}
repo, err := dep.GetRepo(d)
if err != nil {
continue
}
// Dirty repos have uncommitted changes.
if repo.IsDirty() {
continue
}
// Having found a repo we copy it to vendor and update it.
msg.Info("Copying package %s from the GOPATH.", dep.Name)
msg.Debug("Found %s in GOPATH at %s. Copying to %s", dep.Name, d, dest)
err = gpath.CopyDir(d, dest)
if err != nil {
return err
}
// Update the repo in the vendor directory
msg.Debug("Updating %s, now in the vendor path at %s", dep.Name, dest)
repo, err = dep.GetRepo(dest)
if err != nil {
return err
}
err = repo.Update()
if err != nil {
return err
}
// If there is no reference set on the dep we try to checkout
// the default branch.
if dep.Reference == "" {
db := defaultBranch(repo, home)
if db != "" {
err = repo.UpdateVersion(db)
if err != nil && msg.Default.IsDebugging {
msg.Debug("Attempting to set the version on %s to %s failed. Error %s", dep.Name, db, err)
}
}
}
return nil
}
}
}
// When opting in to cache in the GOPATH attempt to do put a copy there.
if cacheGopath {
// Since we didn't find an existing copy in the GOPATHs try to clone there.
gp := gpath.Gopath()
if gp != "" {
d := filepath.Join(gp, "src", dep.Name)
if _, err := os.Stat(d); os.IsNotExist(err) {
// Empty directory so we checkout out the code here.
msg.Debug("Retrieving %s to %s before copying to vendor", dep.Name, d)
repo, err := dep.GetRepo(d)
if err != nil {
return err
}
repo.Get()
branch := findCurrentBranch(repo)
if branch != "" {
// we know the default branch so we can store it in the cache
var loc string
if dep.Repository != "" {
loc = dep.Repository
} else {
loc = "https://" + dep.Name
}
key, err := cp.Key(loc)
if err == nil {
msg.Debug("Saving default branch for %s", repo.Remote())
c := cp.RepoInfo{DefaultBranch: branch}
err = cp.SaveRepoData(key, c)
if msg.Default.IsDebugging && err == cp.ErrCacheDisabled {
msg.Debug("Unable to cache default branch because caching is disabled")
}
}
}
msg.Debug("Copying %s from GOPATH at %s to %s", dep.Name, d, dest)
err = gpath.CopyDir(d, dest)
if err != nil {
return err
}
return nil
}
}
}
// If opting in to caching attempt to put it in the cache folder
if cache {
// Check if the cache has a viable version and try to use that.
var loc string
if dep.Repository != "" {
loc = dep.Repository
} else {
loc = "https://" + dep.Name
}
key, err := cp.Key(loc)
if err == nil {
location, err := cp.Location()
if err != nil {
return err
}
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 != "" {
// we know the default branch so we can store it in the cache
var loc string
if dep.Repository != "" {
loc = dep.Repository
} else {
loc = "https://" + dep.Name
}
key, err := cp.Key(loc)
if err == nil {
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
}
}
msg.Debug("Copying %s from the cache to %s", dep.Name, dest)
err = gpath.CopyDir(d, dest)
if err != nil {
return err
}
return nil
}
msg.Warn("Cache key generation error: %s", err)
}
// If unable to cache pull directly into the vendor/ directory.
repo, err := dep.GetRepo(dest)
if err != nil {
return err
}
gerr := repo.Get()
// Attempt to cache the default branch
if cache {
if branch := findCurrentBranch(repo); branch != "" {
// we know the default branch so we can store it in the cache
var loc string
if dep.Repository != "" {
loc = dep.Repository
} else {
loc = "https://" + dep.Name
}
key, err := cp.Key(loc)
if err == nil {
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)
}
}
}
}
return gerr
}