func unpackIndex(ctx context.Context, pack *indexpack.Archive, dir string) error {
fetcher := pack.Fetcher(ctx)
return pack.ReadUnits(ctx, formatKey, func(u interface{}) error {
unit, ok := u.(*apb.CompilationUnit)
if !ok {
return fmt.Errorf("%T is not a CompilationUnit", u)
}
idx, err := kindex.FromUnit(unit, fetcher)
if err != nil {
return fmt.Errorf("error creating kindex: %v", err)
}
path := kindexPath(dir, idx)
if !*quiet {
log.Println("Writing compilation unit to", path)
}
f, err := vfs.Create(ctx, path)
if err != nil {
return fmt.Errorf("error creating output file: %v", err)
}
if _, err := idx.WriteTo(f); err != nil {
f.Close() // try to close file before returning
return fmt.Errorf("error writing output file: %v", err)
}
return f.Close()
})
}
func main() {
flag.Parse()
if *toArchive != "" && *fromArchive != "" {
fmt.Fprintln(os.Stderr, "ERROR: --to_archive and --from_archive are mutually exclusive")
flag.Usage()
} else if *toArchive != "" && *viewArchive != "" {
fmt.Fprintln(os.Stderr, "ERROR: --to_archive and --view_archive are mutually exclusive")
flag.Usage()
} else if *fromArchive != "" && *viewArchive != "" {
fmt.Fprintln(os.Stderr, "ERROR: --from_archive and --view_archive are mutually exclusive")
flag.Usage()
} else if *toArchive == "" && *fromArchive == "" && *viewArchive == "" {
fmt.Fprintln(os.Stderr, "ERROR: One of [--to_archive --from_archive --view_archive] must be specified")
flag.Usage()
}
archiveRoot := *toArchive
if archiveRoot == "" {
archiveRoot = *fromArchive
}
if archiveRoot == "" {
archiveRoot = *viewArchive
}
ctx := context.Background()
var err error
opts := []indexpack.Option{indexpack.UnitType(apb.CompilationUnit{})}
if strings.HasPrefix(archiveRoot, "gs://") {
path := strings.Trim(strings.TrimPrefix(archiveRoot, "gs://"), "/")
parts := strings.SplitN(path, "/", 2)
ctx, err = oauth2Config.Context(ctx)
if err != nil {
log.Fatal(err)
}
opts = append(opts, indexpack.FS(gcs.FS{parts[0]}))
if len(parts) == 2 {
archiveRoot = parts[1]
} else {
archiveRoot = "/"
}
}
pack, err := indexpack.CreateOrOpen(ctx, archiveRoot, opts...)
if err != nil {
log.Fatalf("Error opening indexpack at %q: %v", archiveRoot, err)
}
if *toArchive != "" {
if len(flag.Args()) == 0 {
log.Println("WARNING: no kindex file paths given")
}
for _, path := range flag.Args() {
kindex, err := kindex.Open(ctx, path)
if err != nil {
log.Fatalf("Error opening kindex at %q: %v", path, err)
}
if err := packIndex(ctx, pack, kindex); err != nil {
log.Fatalf("Error packing kindex at %q into %q: %v", path, pack.Root(), err)
}
}
} else if *fromArchive != "" {
var dir string
if len(flag.Args()) > 1 {
fmt.Fprintf(os.Stderr, "ERROR: Too many positional arguments for --from_archive: %v\n", flag.Args())
flag.Usage()
} else if len(flag.Args()) == 1 {
dir = flag.Arg(0)
if err := os.MkdirAll(dir, os.ModePerm); err != nil {
log.Fatalf("Error creating directory %q: %v", dir, err)
}
}
if err := unpackIndex(ctx, pack, dir); err != nil {
log.Fatalf("Error unpacking compilation units at %q: %v", pack.Root(), err)
}
} else {
en := json.NewEncoder(os.Stdout)
fetcher := pack.Fetcher(ctx)
displayCompilation := func(i interface{}) error {
cu := i.(*apb.CompilationUnit)
if *printFiles {
idx, err := kindex.FromUnit(cu, fetcher)
if err != nil {
return fmt.Errorf("error reading files for compilation: %v", err)
}
return en.Encode(idx)
}
return en.Encode(cu)
}
if len(flag.Args()) == 0 {
if err := pack.ReadUnits(ctx, formatKey, displayCompilation); err != nil {
log.Fatal(err)
}
} else {
for _, digest := range flag.Args() {
if err := pack.ReadUnit(ctx, formatKey, digest, displayCompilation); err != nil {
log.Fatal(err)
}
}
}
}
}