f572852d06
Includes changes from: - https://github.com/ipfs/go-block-format/pull/37 - https://github.com/ipfs/go-libipfs/pull/58
74 lines
1.7 KiB
Go
74 lines
1.7 KiB
Go
package blockstore
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import (
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"context"
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"github.com/ipfs/go-cid"
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blocks "github.com/ipfs/go-libipfs/blocks"
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"golang.org/x/xerrors"
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)
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type ChainIO interface {
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ChainReadObj(context.Context, cid.Cid) ([]byte, error)
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ChainHasObj(context.Context, cid.Cid) (bool, error)
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ChainPutObj(context.Context, blocks.Block) error
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}
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type apiBlockstore struct {
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api ChainIO
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}
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// This blockstore is adapted in the constructor.
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var _ BasicBlockstore = (*apiBlockstore)(nil)
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func NewAPIBlockstore(cio ChainIO) Blockstore {
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bs := &apiBlockstore{api: cio}
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return Adapt(bs) // return an adapted blockstore.
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}
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func (a *apiBlockstore) DeleteBlock(context.Context, cid.Cid) error {
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return xerrors.New("not supported")
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}
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func (a *apiBlockstore) Has(ctx context.Context, c cid.Cid) (bool, error) {
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return a.api.ChainHasObj(ctx, c)
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}
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func (a *apiBlockstore) Get(ctx context.Context, c cid.Cid) (blocks.Block, error) {
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bb, err := a.api.ChainReadObj(ctx, c)
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if err != nil {
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return nil, err
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}
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return blocks.NewBlockWithCid(bb, c)
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}
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func (a *apiBlockstore) GetSize(ctx context.Context, c cid.Cid) (int, error) {
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bb, err := a.api.ChainReadObj(ctx, c)
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if err != nil {
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return 0, err
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}
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return len(bb), nil
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}
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func (a *apiBlockstore) Put(ctx context.Context, block blocks.Block) error {
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return a.api.ChainPutObj(ctx, block)
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}
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func (a *apiBlockstore) PutMany(ctx context.Context, blocks []blocks.Block) error {
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for _, block := range blocks {
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err := a.api.ChainPutObj(ctx, block)
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if err != nil {
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return err
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}
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}
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return nil
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}
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func (a *apiBlockstore) AllKeysChan(ctx context.Context) (<-chan cid.Cid, error) {
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return nil, xerrors.New("not supported")
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}
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func (a *apiBlockstore) HashOnRead(enabled bool) {
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return
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}
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