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datastore_closer.go
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/
datastore_closer.go
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package datastore2
import (
"io"
"gx/ipfs/QmPpegoMqhAEqjncrzArm7KVWAkCm78rqL2DPuNjhPrshg/go-datastore"
syncds "gx/ipfs/QmPpegoMqhAEqjncrzArm7KVWAkCm78rqL2DPuNjhPrshg/go-datastore/sync"
)
type ThreadSafeDatastoreCloser interface {
datastore.ThreadSafeDatastore
io.Closer
Batch() (datastore.Batch, error)
}
func CloserWrap(ds datastore.ThreadSafeDatastore) ThreadSafeDatastoreCloser {
return &datastoreCloserWrapper{ds}
}
func ThreadSafeCloserMapDatastore() ThreadSafeDatastoreCloser {
return CloserWrap(syncds.MutexWrap(datastore.NewMapDatastore()))
}
type datastoreCloserWrapper struct {
datastore.ThreadSafeDatastore
}
func (w *datastoreCloserWrapper) Close() error {
return nil // no-op
}
func (w *datastoreCloserWrapper) Batch() (datastore.Batch, error) {
bds, ok := w.ThreadSafeDatastore.(datastore.Batching)
if !ok {
return nil, datastore.ErrBatchUnsupported
}
return bds.Batch()
}