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feat: automatically detect if genesis CAR is compressed (#12885)

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Automatically detect if genesis CAR is compressed

When `--genesis` path is set, automatically detect if the genesis file
is ZSTD compressed and decompress it.
This commit is contained in:
Masih H. Derkani
2025-02-11 10:20:29 +00:00
committed by GitHub
parent dee78a3857
commit 48d0ab25a4
5 changed files with 168 additions and 13 deletions
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25
cli/lotus/daemon.go
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@ -107,7 +107,7 @@ var DaemonCmd = &cli.Command{
},
&cli.StringFlag{
Name: "genesis",
Usage: "genesis file to use for first node run",
Usage: "genesis file to use for first node run, which may be a zstd compressed CAR or an uncompressed CAR file.",
},
&cli.BoolFlag{
Name: "bootstrap",
@ -253,9 +253,9 @@ var DaemonCmd = &cli.Command{
}
var genBytes []byte
if cctx.String("genesis") != "" {
genBytes, err = os.ReadFile(cctx.String("genesis"))
if err != nil {
genesisPath := cctx.String("genesis")
if genesisPath != "" {
if genBytes, err = readGenesis(genesisPath); err != nil {
return xerrors.Errorf("reading genesis: %w", err)
}
} else {
@ -470,6 +470,23 @@ var DaemonCmd = &cli.Command{
},
}
// readGenesis detects if the path points to a zstd compressed file and if so
// automatically decompress it. Otherwise, defaults to reading the path as is.
func readGenesis(path string) ([]byte, error) {
genesisFile, err := os.Open(filepath.Clean(path))
if err != nil {
return nil, xerrors.Errorf("opening genesis file: %w", err)
}
defer func() { _ = genesisFile.Close() }()
if compressed, err := build.IsZstdCompressed(genesisFile); err != nil {
return nil, xerrors.Errorf("checking genesis header: %w", err)
} else if compressed {
return build.DecompressAsZstd(genesisFile)
}
return io.ReadAll(genesisFile)
}
func importKey(ctx context.Context, api lapi.FullNode, f string) error {
f, err := homedir.Expand(f)
if err != nil {