wehub-resource-sync
108 lines
3.3 KiB
Go
108 lines
3.3 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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//
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// This file incorporates work covered by the following copyright and
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// permission notice:
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//
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// Copyright 2016 Attic Labs, Inc. All rights reserved.
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// Licensed under the Apache License, version 2.0:
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// http://www.apache.org/licenses/LICENSE-2.0
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package nbs
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import (
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"bytes"
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"context"
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"io"
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"golang.org/x/sync/errgroup"
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dherrors "github.com/dolthub/dolt/go/libraries/utils/errors"
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"github.com/dolthub/dolt/go/store/chunks"
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"github.com/dolthub/dolt/go/store/hash"
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)
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type emptyChunkSource struct{}
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func (ecs emptyChunkSource) has(h hash.Hash, _ keeperF) (bool, gcBehavior, error) {
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return false, gcBehavior_Continue, nil
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}
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func (ecs emptyChunkSource) hasMany(addrs []hasRecord, _ keeperF) (bool, gcBehavior, error) {
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return true, gcBehavior_Continue, nil
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}
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func (ecs emptyChunkSource) get(ctx context.Context, h hash.Hash, keeper keeperF, stats *Stats) ([]byte, gcBehavior, error) {
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return nil, gcBehavior_Continue, nil
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}
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func (ecs emptyChunkSource) getMany(ctx context.Context, eg *errgroup.Group, reqs []getRecord, found func(context.Context, *chunks.Chunk), keeper keeperF, stats *Stats) (bool, gcBehavior, error) {
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return true, gcBehavior_Continue, nil
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}
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func (ecs emptyChunkSource) getManyCompressed(ctx context.Context, eg *errgroup.Group, reqs []getRecord, found func(context.Context, ToChunker), keeper keeperF, stats *Stats) (bool, gcBehavior, error) {
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return true, gcBehavior_Continue, nil
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}
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func (ecs emptyChunkSource) count() uint32 {
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return 0
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}
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func (ecs emptyChunkSource) uncompressedLen() (uint64, error) {
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return 0, nil
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}
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func (ecs emptyChunkSource) hash() hash.Hash {
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return hash.Hash{}
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}
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func (ecs emptyChunkSource) suffix() string {
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return ""
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}
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func (ecs emptyChunkSource) index() (tableIndex, error) {
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return onHeapTableIndex{}, nil
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}
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func (ecs emptyChunkSource) reader(context.Context, dherrors.FatalBehavior) (io.ReadCloser, uint64, error) {
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return io.NopCloser(&bytes.Buffer{}), 0, nil
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}
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func (ecs emptyChunkSource) getRecordRanges(ctx context.Context, _ dherrors.FatalBehavior, requests []getRecord, keeper keeperF) (map[hash.Hash]Range, gcBehavior, error) {
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return map[hash.Hash]Range{}, gcBehavior_Continue, nil
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}
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func (ecs emptyChunkSource) currentSize() uint64 {
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return 0
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}
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func (ecs emptyChunkSource) calcReads(reqs []getRecord, blockSize uint64) (reads int, remaining bool, err error) {
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return 0, true, nil
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}
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func (ecs emptyChunkSource) close() error {
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return nil
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}
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func (ecs emptyChunkSource) clone() (chunkSource, error) {
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return ecs, nil
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}
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func (ecs emptyChunkSource) iterateAllChunks(_ context.Context, _ func(chunks.Chunk), _ *Stats) error {
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return nil
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}
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func (ecs emptyChunkSource) tolerantIterateAllChunks(_ context.Context, _ func(chunks.Chunk), _ func(error), _ *Stats) {
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}
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