85 lines
2.1 KiB
Go
85 lines
2.1 KiB
Go
package blockstore
|
|
|
|
import (
|
|
"context"
|
|
"sync"
|
|
|
|
blocks "github.com/ipfs/go-block-format"
|
|
"github.com/ipfs/go-cid"
|
|
)
|
|
|
|
// NewTemporarySync returns a thread-safe temporary blockstore.
|
|
func NewTemporarySync() *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 (m *SyncBlockstore) DeleteBlock(k cid.Cid) error {
|
|
m.mu.Lock()
|
|
defer m.mu.Unlock()
|
|
return m.bs.DeleteBlock(k)
|
|
}
|
|
|
|
func (m *SyncBlockstore) Has(k cid.Cid) (bool, error) {
|
|
m.mu.RLock()
|
|
defer m.mu.RUnlock()
|
|
return m.bs.Has(k)
|
|
}
|
|
|
|
func (m *SyncBlockstore) View(k cid.Cid, callback func([]byte) error) error {
|
|
m.mu.RLock()
|
|
defer m.mu.RUnlock()
|
|
|
|
return m.bs.View(k, callback)
|
|
}
|
|
|
|
func (m *SyncBlockstore) Get(k cid.Cid) (blocks.Block, error) {
|
|
m.mu.RLock()
|
|
defer m.mu.RUnlock()
|
|
return m.bs.Get(k)
|
|
}
|
|
|
|
// GetSize returns the CIDs mapped BlockSize
|
|
func (m *SyncBlockstore) GetSize(k cid.Cid) (int, error) {
|
|
m.mu.RLock()
|
|
defer m.mu.RUnlock()
|
|
return m.bs.GetSize(k)
|
|
}
|
|
|
|
// Put puts a given block to the underlying datastore
|
|
func (m *SyncBlockstore) Put(b blocks.Block) error {
|
|
m.mu.Lock()
|
|
defer m.mu.Unlock()
|
|
return m.bs.Put(b)
|
|
}
|
|
|
|
// PutMany puts a slice of blocks at the same time using batching
|
|
// capabilities of the underlying datastore whenever possible.
|
|
func (m *SyncBlockstore) PutMany(bs []blocks.Block) error {
|
|
m.mu.Lock()
|
|
defer m.mu.Unlock()
|
|
return m.bs.PutMany(bs)
|
|
}
|
|
|
|
// AllKeysChan returns a channel from which
|
|
// the CIDs in the Blockstore can be read. It should respect
|
|
// the given context, closing the channel if it becomes Done.
|
|
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)
|
|
}
|
|
|
|
// HashOnRead specifies if every read block should be
|
|
// rehashed to make sure it matches its CID.
|
|
func (m *SyncBlockstore) HashOnRead(enabled bool) {
|
|
// noop
|
|
}
|