wehub-resource-sync
56 lines
1.8 KiB
Go
56 lines
1.8 KiB
Go
// Copyright 2019 Dolthub, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package dbfactory
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import (
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"context"
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"net/url"
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"github.com/google/uuid"
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"github.com/dolthub/dolt/go/libraries/doltcore/memlimit"
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"github.com/dolthub/dolt/go/store/blobstore"
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"github.com/dolthub/dolt/go/store/datas"
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"github.com/dolthub/dolt/go/store/nbs"
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"github.com/dolthub/dolt/go/store/prolly/tree"
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"github.com/dolthub/dolt/go/store/types"
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)
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// MemFactory is a DBFactory implementation for creating in memory backed databases
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type MemFactory struct {
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}
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func (fact MemFactory) PrepareDB(ctx context.Context, nbf *types.NomsBinFormat, urlObj *url.URL, params map[string]interface{}) error {
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// nothing to prepare
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return nil
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}
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// CreateDB creates an in memory backed database
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func (fact MemFactory) CreateDB(ctx context.Context, nbf *types.NomsBinFormat, urlObj *url.URL, params map[string]interface{}) (datas.Database, types.ValueReadWriter, tree.NodeStore, error) {
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var db datas.Database
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bs := blobstore.NewInMemoryBlobstore(uuid.New().String())
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q := nbs.NewUnlimitedMemQuotaProvider()
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cs, err := nbs.NewBSStore(ctx, nbf.VersionString(), bs, memlimit.MemtableSize(), q)
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if err != nil {
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return nil, nil, nil, err
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}
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vrw := types.NewValueStore(cs)
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ns := tree.NewNodeStore(cs)
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db = datas.NewTypesDatabase(vrw, ns)
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return db, vrw, ns, nil
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}
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