lotus/blockstore/sync.go

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package blockstore
import (
"context"
"sync"
"github.com/ipfs/go-cid"
blocks "github.com/ipfs/go-libipfs/blocks"
)
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// NewMemorySync returns a thread-safe in-memory blockstore.
func NewMemorySync() *SyncBlockstore {
return &SyncBlockstore{bs: make(MemBlockstore)}
}
// SyncBlockstore is a terminal blockstore that is a synchronized version
// of MemBlockstore.
type SyncBlockstore struct {
mu sync.RWMutex
bs MemBlockstore // specifically use a memStore to save indirection overhead.
}
func (*SyncBlockstore) Flush(context.Context) error { return nil }
func (m *SyncBlockstore) DeleteBlock(ctx context.Context, k cid.Cid) error {
m.mu.Lock()
defer m.mu.Unlock()
return m.bs.DeleteBlock(ctx, k)
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}
func (m *SyncBlockstore) DeleteMany(ctx context.Context, ks []cid.Cid) error {
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m.mu.Lock()
defer m.mu.Unlock()
return m.bs.DeleteMany(ctx, ks)
}
func (m *SyncBlockstore) Has(ctx context.Context, k cid.Cid) (bool, error) {
m.mu.RLock()
defer m.mu.RUnlock()
return m.bs.Has(ctx, k)
}
func (m *SyncBlockstore) View(ctx context.Context, k cid.Cid, callback func([]byte) error) error {
m.mu.RLock()
defer m.mu.RUnlock()
return m.bs.View(ctx, k, callback)
}
func (m *SyncBlockstore) Get(ctx context.Context, k cid.Cid) (blocks.Block, error) {
m.mu.RLock()
defer m.mu.RUnlock()
return m.bs.Get(ctx, k)
}
func (m *SyncBlockstore) GetSize(ctx context.Context, k cid.Cid) (int, error) {
m.mu.RLock()
defer m.mu.RUnlock()
return m.bs.GetSize(ctx, k)
}
func (m *SyncBlockstore) Put(ctx context.Context, b blocks.Block) error {
m.mu.Lock()
defer m.mu.Unlock()
return m.bs.Put(ctx, b)
}
func (m *SyncBlockstore) PutMany(ctx context.Context, bs []blocks.Block) error {
m.mu.Lock()
defer m.mu.Unlock()
return m.bs.PutMany(ctx, bs)
}
func (m *SyncBlockstore) AllKeysChan(ctx context.Context) (<-chan cid.Cid, error) {
m.mu.RLock()
defer m.mu.RUnlock()
// this blockstore implementation doesn't do any async work.
return m.bs.AllKeysChan(ctx)
}
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func (m *SyncBlockstore) HashOnRead(enabled bool) {
// noop
}