// RetrieveArtifact takes in the artifact path as a parameter and checks in the base server
// file directory to see if the file exists in the given path. If found, the function will
// return whatever's been stored there, which might be a directory and therefore contain
// multiple files to be returned.
func (cache *Cache) RetrieveArtifact(artPath string) (map[string][]byte, error) {
ret := map[string][]byte{}
if core.IsGlob(artPath) {
for _, art := range core.Glob(cache.rootPath, []string{artPath}, nil, nil, true) {
fullPath := path.Join(cache.rootPath, art)
lock := cache.lockFile(fullPath, false, 0)
body, err := ioutil.ReadFile(fullPath)
if lock != nil {
lock.RUnlock()
}
if err != nil {
return nil, err
}
ret[art] = body
}
return ret, nil
}
fullPath := path.Join(cache.rootPath, artPath)
lock := cache.lockFile(artPath, false, 0)
if lock == nil {
// Can happen if artPath is a directory; we only store artifacts as files.
// (This is a debatable choice; it's a bit crap either way).
if info, err := os.Stat(fullPath); err == nil && info.IsDir() {
return cache.retrieveDir(artPath)
}
return nil, os.ErrNotExist
}
defer lock.RUnlock()
if err := filepath.Walk(fullPath, func(name string, info os.FileInfo, err error) error {
if err != nil {
return err
} else if !info.IsDir() {
body, err := ioutil.ReadFile(name)
if err != nil {
return err
}
ret[name[len(cache.rootPath)+1:]] = body
}
return nil
}); err != nil {
return nil, err
}
return ret, nil
}
// parsePackage performs the initial parse of a package.
// It's assumed that the caller used firstToParse to ascertain that they only call this once per package.
func parsePackage(state *core.BuildState, label, dependor core.BuildLabel) *core.Package {
packageName := label.PackageName
pkg := core.NewPackage(packageName)
if pkg.Filename = buildFileName(state, packageName); pkg.Filename == "" {
exists := core.PathExists(packageName)
// Handle quite a few cases to provide more obvious error messages.
if dependor != core.OriginalTarget && exists {
panic(fmt.Sprintf("%s depends on %s, but there's no BUILD file in %s/", dependor, label, packageName))
} else if dependor != core.OriginalTarget {
panic(fmt.Sprintf("%s depends on %s, but the directory %s doesn't exist", dependor, label, packageName))
} else if exists {
panic(fmt.Sprintf("Can't build %s; there's no BUILD file in %s/", label, packageName))
}
panic(fmt.Sprintf("Can't build %s; the directory %s doesn't exist", label, packageName))
}
if parsePackageFile(state, pkg.Filename, pkg) {
return nil // Indicates deferral
}
for _, target := range pkg.Targets {
state.Graph.AddTarget(target)
for _, out := range target.DeclaredOutputs() {
pkg.MustRegisterOutput(out, target)
}
for _, out := range target.TestOutputs {
if !core.IsGlob(out) {
pkg.MustRegisterOutput(out, target)
}
}
}
// Do this in a separate loop so we get intra-package dependencies right now.
for _, target := range pkg.Targets {
for _, dep := range target.DeclaredDependencies() {
state.Graph.AddDependency(target.Label, dep)
}
}
state.Graph.AddPackage(pkg) // Calling this means nobody else will add entries to pendingTargets for this package.
return pkg
}