85 lines
2.1 KiB
Go
85 lines
2.1 KiB
Go
package repo
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import (
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"context"
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"os"
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"path/filepath"
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dgbadger "github.com/dgraph-io/badger/v2"
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ldbopts "github.com/syndtr/goleveldb/leveldb/opt"
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"golang.org/x/xerrors"
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"github.com/ipfs/go-datastore"
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badger "github.com/ipfs/go-ds-badger2"
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levelds "github.com/ipfs/go-ds-leveldb"
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measure "github.com/ipfs/go-ds-measure"
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)
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type dsCtor func(path string, readonly bool) (datastore.Batching, error)
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var fsDatastores = map[string]dsCtor{
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"metadata": levelDs,
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// Those need to be fast for large writes... but also need a really good GC :c
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"staging": badgerDs, // miner specific
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"client": badgerDs, // client specific
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}
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func badgerDs(path string, readonly bool) (datastore.Batching, error) {
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opts := badger.DefaultOptions
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opts.ReadOnly = readonly
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opts.Options = dgbadger.DefaultOptions("").WithTruncate(true).
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WithValueThreshold(1 << 10)
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return badger.NewDatastore(path, &opts)
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}
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func levelDs(path string, readonly bool) (datastore.Batching, error) {
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return levelds.NewDatastore(path, &levelds.Options{
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Compression: ldbopts.NoCompression,
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NoSync: false,
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Strict: ldbopts.StrictAll,
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ReadOnly: readonly,
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})
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}
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func (fsr *fsLockedRepo) openDatastores(readonly bool) (map[string]datastore.Batching, error) {
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if err := os.MkdirAll(fsr.join(fsDatastore), 0755); err != nil {
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return nil, xerrors.Errorf("mkdir %s: %w", fsr.join(fsDatastore), err)
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}
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out := map[string]datastore.Batching{}
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for p, ctor := range fsDatastores {
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prefix := datastore.NewKey(p)
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// TODO: optimization: don't init datastores we don't need
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ds, err := ctor(fsr.join(filepath.Join(fsDatastore, p)), readonly)
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if err != nil {
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return nil, xerrors.Errorf("opening datastore %s: %w", prefix, err)
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}
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ds = measure.New("fsrepo."+p, ds)
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out[datastore.NewKey(p).String()] = ds
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}
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return out, nil
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}
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func (fsr *fsLockedRepo) Datastore(_ context.Context, ns string) (datastore.Batching, error) {
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fsr.dsOnce.Do(func() {
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fsr.ds, fsr.dsErr = fsr.openDatastores(fsr.readonly)
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})
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if fsr.dsErr != nil {
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return nil, fsr.dsErr
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}
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ds, ok := fsr.ds[ns]
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if ok {
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return ds, nil
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}
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return nil, xerrors.Errorf("no such datastore: %s", ns)
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}
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