94 lines
2.5 KiB
Go
94 lines
2.5 KiB
Go
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package blockstore
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import (
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"context"
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"sync"
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block "github.com/ipfs/go-block-format"
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"github.com/ipfs/go-cid"
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)
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// autolog is a logger for the autobatching blockstore. It is subscoped from the
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// blockstore logger.
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var autolog = log.Named("auto")
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type AutobatchBlockstore struct {
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bufferedBlks []block.Block
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bufferedBlksLk sync.Mutex
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flushLk sync.Mutex
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backingBs Blockstore
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bufferCapacity int
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bufferSize int
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}
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func (bs *AutobatchBlockstore) DeleteBlock(context.Context, cid.Cid) error {
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panic("implement me")
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}
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func (bs *AutobatchBlockstore) Has(ctx context.Context, c cid.Cid) (bool, error) {
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panic("implement me")
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}
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func (bs *AutobatchBlockstore) GetSize(context.Context, cid.Cid) (int, error) {
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panic("implement me")
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}
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func (bs *AutobatchBlockstore) PutMany(context.Context, []block.Block) error {
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panic("implement me")
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}
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func (bs *AutobatchBlockstore) AllKeysChan(ctx context.Context) (<-chan cid.Cid, error) {
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panic("implement me")
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}
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func (bs *AutobatchBlockstore) HashOnRead(enabled bool) {
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panic("implement me")
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}
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func (bs *AutobatchBlockstore) View(ctx context.Context, cid cid.Cid, callback func([]byte) error) error {
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panic("implement me")
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}
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func (bs *AutobatchBlockstore) DeleteMany(ctx context.Context, cids []cid.Cid) error {
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panic("implement me")
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}
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func NewAutobatch(ctx context.Context, backingBs Blockstore, bufferCapacity int) *AutobatchBlockstore {
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bs := &AutobatchBlockstore{
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backingBs: backingBs,
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bufferCapacity: bufferCapacity,
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}
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return bs
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}
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// May NOT `Get` blocks that have been `Put` into this store
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// Only guaranteed to fetch those that were already in the backingBs at creation of this store and those at the most recent `Flush`
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func (bs *AutobatchBlockstore) Get(ctx context.Context, c cid.Cid) (block.Block, error) {
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return bs.backingBs.Get(ctx, c)
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}
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func (bs *AutobatchBlockstore) Put(ctx context.Context, blk block.Block) error {
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// TODO: Would it be faster to check if bs.backing Has the blk (and skip if so)?
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bs.bufferedBlksLk.Lock()
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bs.bufferedBlks = append(bs.bufferedBlks, blk)
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bs.bufferSize += len(blk.RawData())
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if bs.bufferSize >= bs.bufferCapacity {
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// time to flush
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go bs.Flush(ctx)
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}
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bs.bufferedBlksLk.Unlock()
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return nil
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}
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func (bs *AutobatchBlockstore) Flush(ctx context.Context) {
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bs.flushLk.Lock()
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defer bs.flushLk.Unlock()
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bs.bufferedBlksLk.Lock()
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toFlush := bs.bufferedBlks
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bs.bufferedBlks = []block.Block{}
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bs.bufferedBlksLk.Unlock()
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// error?????
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bs.backingBs.PutMany(ctx, toFlush)
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}
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