mirror of https://github.com/milvus-io/milvus.git
116 lines
2.8 KiB
Go
116 lines
2.8 KiB
Go
// Licensed to the LF AI & Data foundation under one
|
|
// or more contributor license agreements. See the NOTICE file
|
|
// distributed with this work for additional information
|
|
// regarding copyright ownership. The ASF licenses this file
|
|
// to you under the Apache License, Version 2.0 (the
|
|
// "License"); you may not use this file except in compliance
|
|
// with the License. You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
package numpy
|
|
|
|
import (
|
|
"context"
|
|
"io"
|
|
|
|
"github.com/samber/lo"
|
|
"go.uber.org/atomic"
|
|
|
|
"github.com/milvus-io/milvus-proto/go-api/v2/schemapb"
|
|
"github.com/milvus-io/milvus/internal/storage"
|
|
"github.com/milvus-io/milvus/internal/util/importutilv2/common"
|
|
)
|
|
|
|
type reader struct {
|
|
ctx context.Context
|
|
cm storage.ChunkManager
|
|
cmrs map[int64]storage.FileReader
|
|
schema *schemapb.CollectionSchema
|
|
|
|
fileSize *atomic.Int64
|
|
paths []string
|
|
|
|
count int64
|
|
frs map[int64]*FieldReader // fieldID -> FieldReader
|
|
}
|
|
|
|
func NewReader(ctx context.Context, cm storage.ChunkManager, schema *schemapb.CollectionSchema, paths []string, bufferSize int) (*reader, error) {
|
|
fields := lo.KeyBy(schema.GetFields(), func(field *schemapb.FieldSchema) int64 {
|
|
return field.GetFieldID()
|
|
})
|
|
count, err := common.EstimateReadCountPerBatch(bufferSize, schema)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
crs := make(map[int64]*FieldReader)
|
|
readers, err := CreateReaders(ctx, cm, schema, paths)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
for fieldID, r := range readers {
|
|
cr, err := NewFieldReader(r, fields[fieldID])
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
crs[fieldID] = cr
|
|
}
|
|
|
|
return &reader{
|
|
ctx: ctx,
|
|
cm: cm,
|
|
cmrs: readers,
|
|
schema: schema,
|
|
fileSize: atomic.NewInt64(0),
|
|
paths: paths,
|
|
count: count,
|
|
frs: crs,
|
|
}, nil
|
|
}
|
|
|
|
func (r *reader) Read() (*storage.InsertData, error) {
|
|
insertData, err := storage.NewInsertData(r.schema)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
for fieldID, cr := range r.frs {
|
|
data, validData, err := cr.Next(r.count)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
if data == nil {
|
|
return nil, io.EOF
|
|
}
|
|
err = insertData.Data[fieldID].AppendRows(data, validData)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
}
|
|
return insertData, nil
|
|
}
|
|
|
|
func (r *reader) Size() (int64, error) {
|
|
if size := r.fileSize.Load(); size != 0 {
|
|
return size, nil
|
|
}
|
|
size, err := storage.GetFilesSize(r.ctx, r.paths, r.cm)
|
|
if err != nil {
|
|
return 0, err
|
|
}
|
|
r.fileSize.Store(size)
|
|
return size, nil
|
|
}
|
|
|
|
func (r *reader) Close() {
|
|
for _, cmr := range r.cmrs {
|
|
cmr.Close()
|
|
}
|
|
}
|