mirror of
https://gitee.com/milvus-io/milvus.git
synced 2024-12-11 09:46:26 +08:00
343 lines
12 KiB
Go
343 lines
12 KiB
Go
package storage
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import (
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"bytes"
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"errors"
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"fmt"
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"github.com/apache/arrow/go/v8/arrow"
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"github.com/apache/arrow/go/v8/parquet"
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"github.com/apache/arrow/go/v8/parquet/file"
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"github.com/milvus-io/milvus/internal/proto/schemapb"
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)
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// PayloadReader reads data from payload
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type PayloadReader struct {
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reader *file.Reader
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colType schemapb.DataType
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numRows int64
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}
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func NewPayloadReader(colType schemapb.DataType, buf []byte) (*PayloadReader, error) {
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if len(buf) == 0 {
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return nil, errors.New("create Payload reader failed, buffer is empty")
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}
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parquetReader, err := file.NewParquetReader(bytes.NewReader(buf))
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if err != nil {
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return nil, err
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}
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return &PayloadReader{reader: parquetReader, colType: colType, numRows: parquetReader.NumRows()}, nil
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}
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// GetDataFromPayload returns data,length from payload, returns err if failed
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// Return:
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// `interface{}`: all types.
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// `int`: dim, only meaningful to FLOAT/BINARY VECTOR type.
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// `error`: error.
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func (r *PayloadReader) GetDataFromPayload() (interface{}, int, error) {
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switch r.colType {
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case schemapb.DataType_Bool:
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val, err := r.GetBoolFromPayload()
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return val, 0, err
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case schemapb.DataType_Int8:
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val, err := r.GetInt8FromPayload()
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return val, 0, err
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case schemapb.DataType_Int16:
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val, err := r.GetInt16FromPayload()
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return val, 0, err
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case schemapb.DataType_Int32:
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val, err := r.GetInt32FromPayload()
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return val, 0, err
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case schemapb.DataType_Int64:
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val, err := r.GetInt64FromPayload()
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return val, 0, err
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case schemapb.DataType_Float:
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val, err := r.GetFloatFromPayload()
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return val, 0, err
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case schemapb.DataType_Double:
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val, err := r.GetDoubleFromPayload()
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return val, 0, err
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case schemapb.DataType_BinaryVector:
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return r.GetBinaryVectorFromPayload()
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case schemapb.DataType_FloatVector:
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return r.GetFloatVectorFromPayload()
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case schemapb.DataType_String, schemapb.DataType_VarChar:
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val, err := r.GetStringFromPayload()
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return val, 0, err
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default:
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return nil, 0, errors.New("unknown type")
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}
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}
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// ReleasePayloadReader release payload reader.
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func (r *PayloadReader) ReleasePayloadReader() {
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r.Close()
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}
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// GetBoolFromPayload returns bool slice from payload.
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func (r *PayloadReader) GetBoolFromPayload() ([]bool, error) {
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if r.colType != schemapb.DataType_Bool {
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return nil, fmt.Errorf("failed to get bool from datatype %v", r.colType.String())
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}
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reader, ok := r.reader.RowGroup(0).Column(0).(*file.BooleanColumnChunkReader)
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if !ok {
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return nil, fmt.Errorf("expect type *file.BooleanColumnChunkReader, but got %T", r.reader.RowGroup(0).Column(0))
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}
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values := make([]bool, r.numRows)
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total, valuesRead, err := reader.ReadBatch(r.numRows, values, nil, nil)
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if err != nil {
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return nil, err
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}
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if total != r.numRows || int64(valuesRead) != r.numRows {
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return nil, fmt.Errorf("expect %d rows, but got total = %d and valuesRead = %d", r.numRows, total, valuesRead)
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}
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return values, nil
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}
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// GetByteFromPayload returns byte slice from payload
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func (r *PayloadReader) GetByteFromPayload() ([]byte, error) {
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if r.colType != schemapb.DataType_Int8 {
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return nil, fmt.Errorf("failed to get byte from datatype %v", r.colType.String())
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}
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reader, ok := r.reader.RowGroup(0).Column(0).(*file.Int32ColumnChunkReader)
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if !ok {
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return nil, fmt.Errorf("expect type *file.Int32ColumnChunkReader, but got %T", r.reader.RowGroup(0).Column(0))
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}
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values := make([]int32, r.numRows)
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total, valuesRead, err := reader.ReadBatch(r.numRows, values, nil, nil)
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if err != nil {
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return nil, err
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}
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if total != r.numRows || int64(valuesRead) != r.numRows {
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return nil, fmt.Errorf("expect %d rows, but got total = %d and valuesRead = %d", r.numRows, total, valuesRead)
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}
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ret := make([]byte, r.numRows)
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for i := int64(0); i < r.numRows; i++ {
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ret[i] = byte(values[i])
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}
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return ret, nil
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}
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// GetInt8FromPayload returns int8 slice from payload
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func (r *PayloadReader) GetInt8FromPayload() ([]int8, error) {
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if r.colType != schemapb.DataType_Int8 {
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return nil, fmt.Errorf("failed to get int8 from datatype %v", r.colType.String())
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}
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reader, ok := r.reader.RowGroup(0).Column(0).(*file.Int32ColumnChunkReader)
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if !ok {
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return nil, fmt.Errorf("expect type *file.Int32ColumnChunkReader, but got %T", r.reader.RowGroup(0).Column(0))
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}
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values := make([]int32, r.numRows)
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total, valuesRead, err := reader.ReadBatch(r.numRows, values, nil, nil)
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if err != nil {
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return nil, err
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}
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if total != r.numRows || int64(valuesRead) != r.numRows {
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return nil, fmt.Errorf("expect %d rows, but got total = %d and valuesRead = %d", r.numRows, total, valuesRead)
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}
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ret := make([]int8, r.numRows)
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for i := int64(0); i < r.numRows; i++ {
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ret[i] = int8(values[i])
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}
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return ret, nil
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}
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func (r *PayloadReader) GetInt16FromPayload() ([]int16, error) {
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if r.colType != schemapb.DataType_Int16 {
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return nil, fmt.Errorf("failed to get int16 from datatype %v", r.colType.String())
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}
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reader, ok := r.reader.RowGroup(0).Column(0).(*file.Int32ColumnChunkReader)
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if !ok {
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return nil, fmt.Errorf("expect type *file.Int32ColumnChunkReader, but got %T", r.reader.RowGroup(0).Column(0))
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}
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values := make([]int32, r.numRows)
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total, valuesRead, err := reader.ReadBatch(r.numRows, values, nil, nil)
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if err != nil {
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return nil, err
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}
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if total != r.numRows || int64(valuesRead) != r.numRows {
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return nil, fmt.Errorf("expect %d rows, but got total = %d and valuesRead = %d", r.numRows, total, valuesRead)
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}
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ret := make([]int16, r.numRows)
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for i := int64(0); i < r.numRows; i++ {
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ret[i] = int16(values[i])
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}
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return ret, nil
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}
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func (r *PayloadReader) GetInt32FromPayload() ([]int32, error) {
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if r.colType != schemapb.DataType_Int32 {
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return nil, fmt.Errorf("failed to get int32 from datatype %v", r.colType.String())
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}
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reader, ok := r.reader.RowGroup(0).Column(0).(*file.Int32ColumnChunkReader)
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if !ok {
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return nil, fmt.Errorf("expect type *file.Int32ColumnChunkReader, but got %T", r.reader.RowGroup(0).Column(0))
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}
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values := make([]int32, r.numRows)
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total, valuesRead, err := reader.ReadBatch(r.numRows, values, nil, nil)
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if err != nil {
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return nil, err
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}
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if total != r.numRows || int64(valuesRead) != r.numRows {
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return nil, fmt.Errorf("expect %d rows, but got total = %d and valuesRead = %d", r.numRows, total, valuesRead)
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}
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return values, nil
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}
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func (r *PayloadReader) GetInt64FromPayload() ([]int64, error) {
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if r.colType != schemapb.DataType_Int64 {
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return nil, fmt.Errorf("failed to get int64 from datatype %v", r.colType.String())
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}
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reader, ok := r.reader.RowGroup(0).Column(0).(*file.Int64ColumnChunkReader)
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if !ok {
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return nil, fmt.Errorf("expect type *file.Int64ColumnChunkReader, but got %T", r.reader.RowGroup(0).Column(0))
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}
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values := make([]int64, r.numRows)
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total, valuesRead, err := reader.ReadBatch(r.numRows, values, nil, nil)
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if err != nil {
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return nil, err
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}
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if total != r.numRows || int64(valuesRead) != r.numRows {
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return nil, fmt.Errorf("expect %d rows, but got total = %d and valuesRead = %d", r.numRows, total, valuesRead)
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}
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return values, nil
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}
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func (r *PayloadReader) GetFloatFromPayload() ([]float32, error) {
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if r.colType != schemapb.DataType_Float {
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return nil, fmt.Errorf("failed to get float32 from datatype %v", r.colType.String())
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}
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reader, ok := r.reader.RowGroup(0).Column(0).(*file.Float32ColumnChunkReader)
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if !ok {
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return nil, fmt.Errorf("expect type *file.Float32ColumnChunkReader, but got %T", r.reader.RowGroup(0).Column(0))
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}
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values := make([]float32, r.numRows)
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total, valuesRead, err := reader.ReadBatch(r.numRows, values, nil, nil)
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if err != nil {
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return nil, err
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}
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if total != r.numRows || int64(valuesRead) != r.numRows {
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return nil, fmt.Errorf("expect %d rows, but got total = %d and valuesRead = %d", r.numRows, total, valuesRead)
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}
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return values, nil
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}
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func (r *PayloadReader) GetDoubleFromPayload() ([]float64, error) {
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if r.colType != schemapb.DataType_Double {
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return nil, fmt.Errorf("failed to get float32 from datatype %v", r.colType.String())
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}
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reader, ok := r.reader.RowGroup(0).Column(0).(*file.Float64ColumnChunkReader)
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if !ok {
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return nil, fmt.Errorf("expect type *file.Float64ColumnChunkReader, but got %T", r.reader.RowGroup(0).Column(0))
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}
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values := make([]float64, r.numRows)
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total, valuesRead, err := reader.ReadBatch(r.numRows, values, nil, nil)
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if err != nil {
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return nil, err
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}
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if total != r.numRows || int64(valuesRead) != r.numRows {
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return nil, fmt.Errorf("expect %d rows, but got total = %d and valuesRead = %d", r.numRows, total, valuesRead)
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}
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return values, nil
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}
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func (r *PayloadReader) GetStringFromPayload() ([]string, error) {
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if r.colType != schemapb.DataType_String && r.colType != schemapb.DataType_VarChar {
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return nil, fmt.Errorf("failed to get string from datatype %v", r.colType.String())
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}
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reader, ok := r.reader.RowGroup(0).Column(0).(*file.ByteArrayColumnChunkReader)
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if !ok {
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return nil, fmt.Errorf("expect type *file.ByteArrayColumnChunkReader, but got %T", r.reader.RowGroup(0).Column(0))
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}
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values := make([]parquet.ByteArray, r.numRows)
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total, valuesRead, err := reader.ReadBatch(r.numRows, values, nil, nil)
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if err != nil {
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return nil, err
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}
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if total != r.numRows || int64(valuesRead) != r.numRows {
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return nil, fmt.Errorf("expect %d rows, but got total = %d and valuesRead = %d", r.numRows, total, valuesRead)
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}
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ret := make([]string, r.numRows)
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for i := 0; i < int(r.numRows); i++ {
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ret[i] = values[i].String()
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}
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return ret, nil
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}
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// GetBinaryVectorFromPayload returns vector, dimension, error
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func (r *PayloadReader) GetBinaryVectorFromPayload() ([]byte, int, error) {
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if r.colType != schemapb.DataType_BinaryVector {
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return nil, -1, fmt.Errorf("failed to get binary vector from datatype %v", r.colType.String())
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}
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reader, ok := r.reader.RowGroup(0).Column(0).(*file.FixedLenByteArrayColumnChunkReader)
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if !ok {
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return nil, -1, fmt.Errorf("expect type *file.FixedLenByteArrayColumnChunkReader, but got %T", r.reader.RowGroup(0).Column(0))
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}
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dim := r.reader.RowGroup(0).Column(0).Descriptor().TypeLength()
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values := make([]parquet.FixedLenByteArray, r.numRows)
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total, valuesRead, err := reader.ReadBatch(r.numRows, values, nil, nil)
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if err != nil {
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return nil, -1, err
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}
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if total != r.numRows || int64(valuesRead) != r.numRows {
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return nil, -1, fmt.Errorf("expect %d rows, but got total = %d and valuesRead = %d", r.numRows, total, valuesRead)
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}
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ret := make([]byte, int64(dim)*r.numRows)
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for i := 0; i < int(r.numRows); i++ {
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copy(ret[i*dim:(i+1)*dim], values[i])
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}
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return ret, dim * 8, nil
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}
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// GetFloatVectorFromPayload returns vector, dimension, error
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func (r *PayloadReader) GetFloatVectorFromPayload() ([]float32, int, error) {
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if r.colType != schemapb.DataType_FloatVector {
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return nil, -1, fmt.Errorf("failed to get float vector from datatype %v", r.colType.String())
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}
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reader, ok := r.reader.RowGroup(0).Column(0).(*file.FixedLenByteArrayColumnChunkReader)
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if !ok {
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return nil, -1, fmt.Errorf("expect type *file.FixedLenByteArrayColumnChunkReader, but got %T", r.reader.RowGroup(0).Column(0))
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}
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dim := r.reader.RowGroup(0).Column(0).Descriptor().TypeLength() / 4
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values := make([]parquet.FixedLenByteArray, r.numRows)
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total, valuesRead, err := reader.ReadBatch(r.numRows, values, nil, nil)
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if err != nil {
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return nil, -1, err
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}
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if total != r.numRows || int64(valuesRead) != r.numRows {
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return nil, -1, fmt.Errorf("expect %d rows, but got total = %d and valuesRead = %d", r.numRows, total, valuesRead)
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}
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ret := make([]float32, int64(dim)*r.numRows)
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for i := 0; i < int(r.numRows); i++ {
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copy(arrow.Float32Traits.CastToBytes(ret[i*dim:(i+1)*dim]), values[i])
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}
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return ret, dim, nil
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}
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func (r *PayloadReader) GetPayloadLengthFromReader() (int, error) {
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return int(r.numRows), nil
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}
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// Close closes the payload reader
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func (r *PayloadReader) Close() {
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r.reader.Close()
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}
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