mirror of https://github.com/milvus-io/milvus.git
136 lines
3.9 KiB
Go
136 lines
3.9 KiB
Go
// Licensed to the LF AI & Data foundation under one
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// or more contributor license agreements. See the NOTICE file
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// distributed with this work for additional information
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// regarding copyright ownership. The ASF licenses this file
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// to you under the Apache License, Version 2.0 (the
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// "License"); you may not use this file except in compliance
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// with the License. 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 storage
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import (
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"context"
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"fmt"
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sio "io"
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"github.com/samber/lo"
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"github.com/milvus-io/milvus-proto/go-api/v2/schemapb"
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"github.com/milvus-io/milvus/internal/allocator"
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"github.com/milvus-io/milvus/pkg/v2/proto/datapb"
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"github.com/milvus-io/milvus/pkg/v2/util/merr"
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)
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const (
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StorageV1 int64 = 0
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StorageV2 int64 = 2
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)
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type rwOptions struct {
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version int64
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bufferSize uint64
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downloader func(ctx context.Context, paths []string) ([][]byte, error)
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uploader func(ctx context.Context, kvs map[string][]byte) error
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}
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type RwOption func(*rwOptions)
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func defaultRwOptions() *rwOptions {
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return &rwOptions{
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bufferSize: 32 * 1024 * 1024,
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}
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}
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func WithVersion(version int64) RwOption {
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return func(options *rwOptions) {
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options.version = version
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}
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}
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func WithBufferSize(bufferSize uint64) RwOption {
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return func(options *rwOptions) {
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options.bufferSize = bufferSize
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}
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}
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func WithDownloader(downloader func(ctx context.Context, paths []string) ([][]byte, error)) RwOption {
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return func(options *rwOptions) {
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options.downloader = downloader
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}
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}
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func WithUploader(uploader func(ctx context.Context, kvs map[string][]byte) error) RwOption {
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return func(options *rwOptions) {
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options.uploader = uploader
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}
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}
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func NewBinlogRecordReader(ctx context.Context, binlogs []*datapb.FieldBinlog, schema *schemapb.CollectionSchema, option ...RwOption) (RecordReader, error) {
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rwOptions := defaultRwOptions()
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for _, opt := range option {
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opt(rwOptions)
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}
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switch rwOptions.version {
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case StorageV1:
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itr := 0
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return newCompositeBinlogRecordReader(schema, func() ([]*Blob, error) {
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if len(binlogs) <= 0 {
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return nil, sio.EOF
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}
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paths := make([]string, len(binlogs))
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for i, fieldBinlog := range binlogs {
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if itr >= len(fieldBinlog.GetBinlogs()) {
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return nil, sio.EOF
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}
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paths[i] = fieldBinlog.GetBinlogs()[itr].GetLogPath()
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}
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itr++
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values, err := rwOptions.downloader(ctx, paths)
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if err != nil {
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return nil, err
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}
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blobs := lo.Map(values, func(v []byte, i int) *Blob {
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return &Blob{Key: paths[i], Value: v}
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})
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return blobs, nil
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})
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case StorageV2:
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// TODO: integrate v2
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}
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return nil, merr.WrapErrServiceInternal(fmt.Sprintf("unsupported storage version %d", rwOptions.version))
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}
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func NewBinlogRecordWriter(ctx context.Context, collectionID, partitionID, segmentID UniqueID,
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schema *schemapb.CollectionSchema, allocator allocator.Interface, chunkSize uint64, rootPath string, maxRowNum int64,
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option ...RwOption,
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) (BinlogRecordWriter, error) {
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rwOptions := defaultRwOptions()
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for _, opt := range option {
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opt(rwOptions)
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}
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switch rwOptions.version {
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case StorageV1:
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blobsWriter := func(blobs []*Blob) error {
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kvs := make(map[string][]byte, len(blobs))
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for _, blob := range blobs {
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kvs[blob.Key] = blob.Value
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}
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return rwOptions.uploader(ctx, kvs)
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}
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return newCompositeBinlogRecordWriter(collectionID, partitionID, segmentID, schema,
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blobsWriter, allocator, chunkSize, rootPath, maxRowNum,
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)
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case StorageV2:
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// TODO: integrate v2
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}
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return nil, merr.WrapErrServiceInternal(fmt.Sprintf("unsupported storage version %d", rwOptions.version))
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}
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