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3d07b6682c
This PR implements a new numpy reader for import. issue: https://github.com/milvus-io/milvus/issues/28521 --------- Signed-off-by: bigsheeper <yihao.dai@zilliz.com>
83 lines
2.1 KiB
Go
83 lines
2.1 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 numpy
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import (
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"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/storage"
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)
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type Reader struct {
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schema *schemapb.CollectionSchema
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count int64
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frs map[int64]*FieldReader // fieldID -> FieldReader
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}
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func NewReader(schema *schemapb.CollectionSchema, readers map[int64]io.Reader, bufferSize int) (*Reader, error) {
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fields := lo.KeyBy(schema.GetFields(), func(field *schemapb.FieldSchema) int64 {
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return field.GetFieldID()
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})
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count, err := calcRowCount(bufferSize, schema)
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if err != nil {
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return nil, err
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}
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crs := make(map[int64]*FieldReader)
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for fieldID, r := range readers {
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cr, err := NewFieldReader(r, fields[fieldID])
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if err != nil {
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return nil, err
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}
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crs[fieldID] = cr
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}
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return &Reader{
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schema: schema,
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count: count,
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frs: crs,
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}, nil
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}
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func (r *Reader) Read() (*storage.InsertData, error) {
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insertData, err := storage.NewInsertData(r.schema)
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if err != nil {
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return nil, err
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}
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for fieldID, cr := range r.frs {
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data, err := cr.Next(r.count)
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if err != nil {
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return nil, err
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}
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if data == nil {
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return nil, nil
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}
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err = insertData.Data[fieldID].AppendRows(data)
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if err != nil {
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return nil, err
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}
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}
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return insertData, nil
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}
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func (r *Reader) Close() {
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for _, cr := range r.frs {
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cr.Close()
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}
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}
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