86 lines
2.3 KiB
Go
86 lines
2.3 KiB
Go
package bundle
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import (
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"bytes"
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"context"
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"io"
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"os"
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"github.com/ipfs/go-cid"
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"github.com/ipld/go-car"
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"golang.org/x/xerrors"
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"github.com/filecoin-project/lotus/blockstore"
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"github.com/filecoin-project/lotus/build"
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"github.com/filecoin-project/lotus/chain/actors"
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)
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func LoadBundleFromFile(ctx context.Context, bs blockstore.Blockstore, path string) (cid.Cid, error) {
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f, err := os.Open(path)
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if err != nil {
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return cid.Undef, xerrors.Errorf("error opening bundle %q for builtin-actors: %w", path, err)
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}
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defer f.Close() //nolint
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return LoadBundle(ctx, bs, f)
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}
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func LoadBundle(ctx context.Context, bs blockstore.Blockstore, r io.Reader) (cid.Cid, error) {
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hdr, err := car.LoadCar(ctx, bs, r)
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if err != nil {
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return cid.Undef, xerrors.Errorf("error loading builtin actors bundle: %w", err)
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}
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if len(hdr.Roots) != 1 {
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return cid.Undef, xerrors.Errorf("expected one root when loading actors bundle, got %d", len(hdr.Roots))
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}
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return hdr.Roots[0], nil
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}
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// LoadBundles loads the bundles for the specified actor versions into the passed blockstore, if and
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// only if the bundle's manifest is not already present in the blockstore.
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func LoadBundles(ctx context.Context, bs blockstore.Blockstore, versions ...actors.Version) error {
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for _, av := range versions {
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// No bundles before version 8.
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if av < actors.Version8 {
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continue
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}
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manifestCid, ok := actors.GetManifest(av)
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if !ok {
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// All manifests are registered on start, so this must succeed.
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return xerrors.Errorf("unknown actor version v%d", av)
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}
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if haveManifest, err := bs.Has(ctx, manifestCid); err != nil {
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return xerrors.Errorf("blockstore error when loading manifest %s: %w", manifestCid, err)
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} else if haveManifest {
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// We already have the manifest, and therefore everything under it.
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continue
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}
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var (
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root cid.Cid
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err error
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)
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if path, ok := build.BundleOverrides[av]; ok {
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root, err = LoadBundleFromFile(ctx, bs, path)
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} else if embedded, ok := build.GetEmbeddedBuiltinActorsBundle(av); ok {
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root, err = LoadBundle(ctx, bs, bytes.NewReader(embedded))
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} else {
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err = xerrors.Errorf("bundle for actors version v%d not found", av)
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}
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if err != nil {
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return err
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}
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if root != manifestCid {
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return xerrors.Errorf("expected manifest for actors version %d does not match actual: %s != %s", av, manifestCid, root)
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}
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}
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return nil
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}
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