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https://gitee.com/milvus-io/milvus.git
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3387b07dfd
* rename AddOneStringToPayload/GetOneStringFromPayload to AddStringToPayload/GetStringFromPayload Signed-off-by: yudong.cai <yudong.cai@zilliz.com> * code optimize Signed-off-by: yudong.cai <yudong.cai@zilliz.com> * rename print_binglog_test to print_binlog_test Signed-off-by: yudong.cai <yudong.cai@zilliz.com> * update chap08_binlog.md Signed-off-by: yudong.cai <yudong.cai@zilliz.com> * fix unittest Signed-off-by: yudong.cai <yudong.cai@zilliz.com> * use SetEventTimestamp() to replace SetStartTimestamp() and SetEndTimestamp() Signed-off-by: yudong.cai <yudong.cai@zilliz.com> * code optimize Signed-off-by: yudong.cai <yudong.cai@zilliz.com> * rename AddStringToPayload/GetStringFromPayload to AddOneStringToPayload/GetOneStringFromPayload Signed-off-by: yudong.cai <yudong.cai@zilliz.com>
698 lines
19 KiB
Go
698 lines
19 KiB
Go
// Copyright (C) 2019-2020 Zilliz. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "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 distributed under the License
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// is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
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// or implied. See the License for the specific language governing permissions and limitations under the License.
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package storage
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/*
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#cgo CFLAGS: -I${SRCDIR}/cwrapper
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#cgo LDFLAGS: -L${SRCDIR}/cwrapper/output -lwrapper -lparquet -larrow -lthrift -lutf8proc -lstdc++ -lm
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#include <stdlib.h>
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#include "ParquetWrapper.h"
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*/
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import "C"
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import (
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"errors"
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"unsafe"
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"github.com/milvus-io/milvus/internal/proto/commonpb"
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"github.com/milvus-io/milvus/internal/proto/schemapb"
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)
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type PayloadWriterInterface interface {
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AddDataToPayload(msgs interface{}, dim ...int) error
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AddBoolToPayload(msgs []bool) error
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AddInt8ToPayload(msgs []int8) error
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AddInt16ToPayload(msgs []int16) error
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AddInt32ToPayload(msgs []int32) error
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AddInt64ToPayload(msgs []int64) error
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AddFloatToPayload(msgs []float32) error
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AddDoubleToPayload(msgs []float64) error
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AddOneStringToPayload(msgs string) error
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AddBinaryVectorToPayload(binVec []byte, dim int) error
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AddFloatVectorToPayload(binVec []float32, dim int) error
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FinishPayloadWriter() error
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GetPayloadBufferFromWriter() ([]byte, error)
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GetPayloadLengthFromWriter() (int, error)
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ReleasePayloadWriter() error
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Close() error
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}
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type PayloadReaderInterface interface {
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GetDataFromPayload(idx ...int) (interface{}, int, error)
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GetBoolFromPayload() ([]bool, error)
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GetInt8FromPayload() ([]int8, error)
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GetInt16FromPayload() ([]int16, error)
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GetInt32FromPayload() ([]int32, error)
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GetInt64FromPayload() ([]int64, error)
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GetFloatFromPayload() ([]float32, error)
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GetDoubleFromPayload() ([]float64, error)
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GetOneStringFromPayload(idx int) (string, error)
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GetBinaryVectorFromPayload() ([]byte, int, error)
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GetFloatVectorFromPayload() ([]float32, int, error)
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GetPayloadLengthFromReader() (int, error)
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ReleasePayloadReader() error
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Close() error
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}
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type PayloadWriter struct {
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payloadWriterPtr C.CPayloadWriter
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colType schemapb.DataType
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}
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type PayloadReader struct {
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payloadReaderPtr C.CPayloadReader
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colType schemapb.DataType
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}
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func NewPayloadWriter(colType schemapb.DataType) (*PayloadWriter, error) {
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w := C.NewPayloadWriter(C.int(colType))
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if w == nil {
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return nil, errors.New("create Payload writer failed")
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}
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return &PayloadWriter{payloadWriterPtr: w, colType: colType}, nil
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}
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func (w *PayloadWriter) AddDataToPayload(msgs interface{}, dim ...int) error {
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switch len(dim) {
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case 0:
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switch w.colType {
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case schemapb.DataType_Bool:
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val, ok := msgs.([]bool)
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if !ok {
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return errors.New("incorrect data type")
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}
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return w.AddBoolToPayload(val)
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case schemapb.DataType_Int8:
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val, ok := msgs.([]int8)
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if !ok {
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return errors.New("incorrect data type")
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}
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return w.AddInt8ToPayload(val)
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case schemapb.DataType_Int16:
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val, ok := msgs.([]int16)
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if !ok {
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return errors.New("incorrect data type")
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}
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return w.AddInt16ToPayload(val)
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case schemapb.DataType_Int32:
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val, ok := msgs.([]int32)
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if !ok {
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return errors.New("incorrect data type")
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}
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return w.AddInt32ToPayload(val)
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case schemapb.DataType_Int64:
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val, ok := msgs.([]int64)
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if !ok {
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return errors.New("incorrect data type")
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}
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return w.AddInt64ToPayload(val)
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case schemapb.DataType_Float:
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val, ok := msgs.([]float32)
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if !ok {
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return errors.New("incorrect data type")
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}
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return w.AddFloatToPayload(val)
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case schemapb.DataType_Double:
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val, ok := msgs.([]float64)
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if !ok {
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return errors.New("incorrect data type")
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}
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return w.AddDoubleToPayload(val)
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case schemapb.DataType_String:
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val, ok := msgs.(string)
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if !ok {
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return errors.New("incorrect data type")
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}
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return w.AddOneStringToPayload(val)
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default:
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return errors.New("incorrect datatype")
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}
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case 1:
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switch w.colType {
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case schemapb.DataType_BinaryVector:
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val, ok := msgs.([]byte)
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if !ok {
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return errors.New("incorrect data type")
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}
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return w.AddBinaryVectorToPayload(val, dim[0])
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case schemapb.DataType_FloatVector:
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val, ok := msgs.([]float32)
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if !ok {
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return errors.New("incorrect data type")
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}
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return w.AddFloatVectorToPayload(val, dim[0])
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default:
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return errors.New("incorrect datatype")
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}
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default:
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return errors.New("incorrect input numbers")
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}
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}
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func (w *PayloadWriter) AddBoolToPayload(msgs []bool) error {
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length := len(msgs)
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if length <= 0 {
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return errors.New("can't add empty msgs into payload")
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}
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cMsgs := (*C.bool)(unsafe.Pointer(&msgs[0]))
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cLength := C.int(length)
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status := C.AddBooleanToPayload(w.payloadWriterPtr, cMsgs, cLength)
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errCode := commonpb.ErrorCode(status.error_code)
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if errCode != commonpb.ErrorCode_Success {
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msg := C.GoString(status.error_msg)
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defer C.free(unsafe.Pointer(status.error_msg))
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return errors.New(msg)
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}
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return nil
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}
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func (w *PayloadWriter) AddInt8ToPayload(msgs []int8) error {
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length := len(msgs)
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if length <= 0 {
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return errors.New("can't add empty msgs into payload")
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}
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cMsgs := (*C.int8_t)(unsafe.Pointer(&msgs[0]))
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cLength := C.int(length)
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status := C.AddInt8ToPayload(w.payloadWriterPtr, cMsgs, cLength)
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errCode := commonpb.ErrorCode(status.error_code)
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if errCode != commonpb.ErrorCode_Success {
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msg := C.GoString(status.error_msg)
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defer C.free(unsafe.Pointer(status.error_msg))
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return errors.New(msg)
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}
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return nil
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}
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func (w *PayloadWriter) AddInt16ToPayload(msgs []int16) error {
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length := len(msgs)
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if length <= 0 {
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return errors.New("can't add empty msgs into payload")
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}
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cMsgs := (*C.int16_t)(unsafe.Pointer(&msgs[0]))
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cLength := C.int(length)
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status := C.AddInt16ToPayload(w.payloadWriterPtr, cMsgs, cLength)
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errCode := commonpb.ErrorCode(status.error_code)
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if errCode != commonpb.ErrorCode_Success {
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msg := C.GoString(status.error_msg)
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defer C.free(unsafe.Pointer(status.error_msg))
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return errors.New(msg)
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}
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return nil
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}
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func (w *PayloadWriter) AddInt32ToPayload(msgs []int32) error {
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length := len(msgs)
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if length <= 0 {
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return errors.New("can't add empty msgs into payload")
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}
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cMsgs := (*C.int32_t)(unsafe.Pointer(&msgs[0]))
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cLength := C.int(length)
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status := C.AddInt32ToPayload(w.payloadWriterPtr, cMsgs, cLength)
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errCode := commonpb.ErrorCode(status.error_code)
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if errCode != commonpb.ErrorCode_Success {
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msg := C.GoString(status.error_msg)
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defer C.free(unsafe.Pointer(status.error_msg))
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return errors.New(msg)
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}
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return nil
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}
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func (w *PayloadWriter) AddInt64ToPayload(msgs []int64) error {
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length := len(msgs)
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if length <= 0 {
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return errors.New("can't add empty msgs into payload")
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}
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cMsgs := (*C.int64_t)(unsafe.Pointer(&msgs[0]))
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cLength := C.int(length)
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status := C.AddInt64ToPayload(w.payloadWriterPtr, cMsgs, cLength)
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errCode := commonpb.ErrorCode(status.error_code)
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if errCode != commonpb.ErrorCode_Success {
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msg := C.GoString(status.error_msg)
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defer C.free(unsafe.Pointer(status.error_msg))
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return errors.New(msg)
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}
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return nil
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}
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func (w *PayloadWriter) AddFloatToPayload(msgs []float32) error {
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length := len(msgs)
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if length <= 0 {
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return errors.New("can't add empty msgs into payload")
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}
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cMsgs := (*C.float)(unsafe.Pointer(&msgs[0]))
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cLength := C.int(length)
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status := C.AddFloatToPayload(w.payloadWriterPtr, cMsgs, cLength)
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errCode := commonpb.ErrorCode(status.error_code)
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if errCode != commonpb.ErrorCode_Success {
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msg := C.GoString(status.error_msg)
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defer C.free(unsafe.Pointer(status.error_msg))
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return errors.New(msg)
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}
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return nil
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}
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func (w *PayloadWriter) AddDoubleToPayload(msgs []float64) error {
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length := len(msgs)
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if length <= 0 {
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return errors.New("can't add empty msgs into payload")
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}
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cMsgs := (*C.double)(unsafe.Pointer(&msgs[0]))
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cLength := C.int(length)
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status := C.AddDoubleToPayload(w.payloadWriterPtr, cMsgs, cLength)
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errCode := commonpb.ErrorCode(status.error_code)
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if errCode != commonpb.ErrorCode_Success {
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msg := C.GoString(status.error_msg)
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defer C.free(unsafe.Pointer(status.error_msg))
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return errors.New(msg)
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}
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return nil
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}
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func (w *PayloadWriter) AddOneStringToPayload(msg string) error {
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length := len(msg)
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if length == 0 {
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return errors.New("can't add empty string into payload")
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}
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cmsg := C.CString(msg)
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clength := C.int(length)
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defer C.free(unsafe.Pointer(cmsg))
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st := C.AddOneStringToPayload(w.payloadWriterPtr, cmsg, clength)
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errCode := commonpb.ErrorCode(st.error_code)
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if errCode != commonpb.ErrorCode_Success {
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msg := C.GoString(st.error_msg)
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defer C.free(unsafe.Pointer(st.error_msg))
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return errors.New(msg)
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}
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return nil
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}
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// dimension > 0 && (%8 == 0)
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func (w *PayloadWriter) AddBinaryVectorToPayload(binVec []byte, dim int) error {
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length := len(binVec)
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if length <= 0 {
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return errors.New("can't add empty binVec into payload")
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}
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if dim <= 0 {
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return errors.New("dimension should be greater than 0")
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}
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cBinVec := (*C.uint8_t)(&binVec[0])
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cDim := C.int(dim)
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cLength := C.int(length / (dim / 8))
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st := C.AddBinaryVectorToPayload(w.payloadWriterPtr, cBinVec, cDim, cLength)
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errCode := commonpb.ErrorCode(st.error_code)
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if errCode != commonpb.ErrorCode_Success {
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msg := C.GoString(st.error_msg)
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defer C.free(unsafe.Pointer(st.error_msg))
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return errors.New(msg)
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}
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return nil
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}
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// dimension > 0 && (%8 == 0)
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func (w *PayloadWriter) AddFloatVectorToPayload(floatVec []float32, dim int) error {
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length := len(floatVec)
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if length <= 0 {
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return errors.New("can't add empty floatVec into payload")
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}
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if dim <= 0 {
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return errors.New("dimension should be greater than 0")
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}
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cVec := (*C.float)(&floatVec[0])
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cDim := C.int(dim)
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cLength := C.int(length / dim)
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st := C.AddFloatVectorToPayload(w.payloadWriterPtr, cVec, cDim, cLength)
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errCode := commonpb.ErrorCode(st.error_code)
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if errCode != commonpb.ErrorCode_Success {
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msg := C.GoString(st.error_msg)
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defer C.free(unsafe.Pointer(st.error_msg))
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return errors.New(msg)
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}
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return nil
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}
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func (w *PayloadWriter) FinishPayloadWriter() error {
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st := C.FinishPayloadWriter(w.payloadWriterPtr)
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errCode := commonpb.ErrorCode(st.error_code)
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if errCode != commonpb.ErrorCode_Success {
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msg := C.GoString(st.error_msg)
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defer C.free(unsafe.Pointer(st.error_msg))
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return errors.New(msg)
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}
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return nil
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}
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func (w *PayloadWriter) GetPayloadBufferFromWriter() ([]byte, error) {
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cb := C.GetPayloadBufferFromWriter(w.payloadWriterPtr)
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pointer := unsafe.Pointer(cb.data)
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length := int(cb.length)
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if length <= 0 {
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return nil, errors.New("empty buffer")
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}
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// refer to: https://github.com/golang/go/wiki/cgo#turning-c-arrays-into-go-slices
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slice := (*[1 << 28]byte)(pointer)[:length:length]
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return slice, nil
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}
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func (w *PayloadWriter) GetPayloadLengthFromWriter() (int, error) {
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length := C.GetPayloadLengthFromWriter(w.payloadWriterPtr)
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return int(length), nil
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}
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func (w *PayloadWriter) ReleasePayloadWriter() error {
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st := C.ReleasePayloadWriter(w.payloadWriterPtr)
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errCode := commonpb.ErrorCode(st.error_code)
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if errCode != commonpb.ErrorCode_Success {
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msg := C.GoString(st.error_msg)
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defer C.free(unsafe.Pointer(st.error_msg))
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return errors.New(msg)
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}
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return nil
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}
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func (w *PayloadWriter) Close() error {
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return w.ReleasePayloadWriter()
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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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r := C.NewPayloadReader(C.int(colType), (*C.uint8_t)(unsafe.Pointer(&buf[0])), C.long(len(buf)))
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if r == nil {
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return nil, errors.New("failed to read parquet from buffer")
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}
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return &PayloadReader{payloadReaderPtr: r, colType: colType}, nil
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}
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// Params:
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// `idx`: String index
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// Return:
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// `interface{}`: all types.
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// `int`: length, only meaningful to FLOAT/BINARY VECTOR type.
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// `error`: error.
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func (r *PayloadReader) GetDataFromPayload(idx ...int) (interface{}, int, error) {
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switch len(idx) {
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case 1:
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switch r.colType {
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case schemapb.DataType_String:
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val, err := r.GetOneStringFromPayload(idx[0])
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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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case 0:
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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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default:
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return nil, 0, errors.New("unknown type")
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}
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default:
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return nil, 0, errors.New("incorrect number of index")
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}
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}
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func (r *PayloadReader) ReleasePayloadReader() error {
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st := C.ReleasePayloadReader(r.payloadReaderPtr)
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errCode := commonpb.ErrorCode(st.error_code)
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if errCode != commonpb.ErrorCode_Success {
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msg := C.GoString(st.error_msg)
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defer C.free(unsafe.Pointer(st.error_msg))
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return errors.New(msg)
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}
|
|
return nil
|
|
}
|
|
|
|
func (r *PayloadReader) GetBoolFromPayload() ([]bool, error) {
|
|
if r.colType != schemapb.DataType_Bool {
|
|
return nil, errors.New("incorrect data type")
|
|
}
|
|
|
|
var cMsg *C.bool
|
|
var cSize C.int
|
|
|
|
st := C.GetBoolFromPayload(r.payloadReaderPtr, &cMsg, &cSize)
|
|
errCode := commonpb.ErrorCode(st.error_code)
|
|
if errCode != commonpb.ErrorCode_Success {
|
|
msg := C.GoString(st.error_msg)
|
|
defer C.free(unsafe.Pointer(st.error_msg))
|
|
return nil, errors.New(msg)
|
|
}
|
|
|
|
slice := (*[1 << 28]bool)(unsafe.Pointer(cMsg))[:cSize:cSize]
|
|
return slice, nil
|
|
}
|
|
|
|
func (r *PayloadReader) GetInt8FromPayload() ([]int8, error) {
|
|
if r.colType != schemapb.DataType_Int8 {
|
|
return nil, errors.New("incorrect data type")
|
|
}
|
|
|
|
var cMsg *C.int8_t
|
|
var cSize C.int
|
|
|
|
st := C.GetInt8FromPayload(r.payloadReaderPtr, &cMsg, &cSize)
|
|
errCode := commonpb.ErrorCode(st.error_code)
|
|
if errCode != commonpb.ErrorCode_Success {
|
|
msg := C.GoString(st.error_msg)
|
|
defer C.free(unsafe.Pointer(st.error_msg))
|
|
return nil, errors.New(msg)
|
|
}
|
|
|
|
slice := (*[1 << 28]int8)(unsafe.Pointer(cMsg))[:cSize:cSize]
|
|
return slice, nil
|
|
}
|
|
|
|
func (r *PayloadReader) GetInt16FromPayload() ([]int16, error) {
|
|
if r.colType != schemapb.DataType_Int16 {
|
|
return nil, errors.New("incorrect data type")
|
|
}
|
|
|
|
var cMsg *C.int16_t
|
|
var cSize C.int
|
|
|
|
st := C.GetInt16FromPayload(r.payloadReaderPtr, &cMsg, &cSize)
|
|
errCode := commonpb.ErrorCode(st.error_code)
|
|
if errCode != commonpb.ErrorCode_Success {
|
|
msg := C.GoString(st.error_msg)
|
|
defer C.free(unsafe.Pointer(st.error_msg))
|
|
return nil, errors.New(msg)
|
|
}
|
|
|
|
slice := (*[1 << 28]int16)(unsafe.Pointer(cMsg))[:cSize:cSize]
|
|
return slice, nil
|
|
}
|
|
|
|
func (r *PayloadReader) GetInt32FromPayload() ([]int32, error) {
|
|
if r.colType != schemapb.DataType_Int32 {
|
|
return nil, errors.New("incorrect data type")
|
|
}
|
|
|
|
var cMsg *C.int32_t
|
|
var cSize C.int
|
|
|
|
st := C.GetInt32FromPayload(r.payloadReaderPtr, &cMsg, &cSize)
|
|
errCode := commonpb.ErrorCode(st.error_code)
|
|
if errCode != commonpb.ErrorCode_Success {
|
|
msg := C.GoString(st.error_msg)
|
|
defer C.free(unsafe.Pointer(st.error_msg))
|
|
return nil, errors.New(msg)
|
|
}
|
|
|
|
slice := (*[1 << 28]int32)(unsafe.Pointer(cMsg))[:cSize:cSize]
|
|
return slice, nil
|
|
}
|
|
|
|
func (r *PayloadReader) GetInt64FromPayload() ([]int64, error) {
|
|
if r.colType != schemapb.DataType_Int64 {
|
|
return nil, errors.New("incorrect data type")
|
|
}
|
|
|
|
var cMsg *C.int64_t
|
|
var cSize C.int
|
|
|
|
st := C.GetInt64FromPayload(r.payloadReaderPtr, &cMsg, &cSize)
|
|
errCode := commonpb.ErrorCode(st.error_code)
|
|
if errCode != commonpb.ErrorCode_Success {
|
|
msg := C.GoString(st.error_msg)
|
|
defer C.free(unsafe.Pointer(st.error_msg))
|
|
return nil, errors.New(msg)
|
|
}
|
|
|
|
slice := (*[1 << 28]int64)(unsafe.Pointer(cMsg))[:cSize:cSize]
|
|
return slice, nil
|
|
}
|
|
|
|
func (r *PayloadReader) GetFloatFromPayload() ([]float32, error) {
|
|
if r.colType != schemapb.DataType_Float {
|
|
return nil, errors.New("incorrect data type")
|
|
}
|
|
|
|
var cMsg *C.float
|
|
var cSize C.int
|
|
|
|
st := C.GetFloatFromPayload(r.payloadReaderPtr, &cMsg, &cSize)
|
|
errCode := commonpb.ErrorCode(st.error_code)
|
|
if errCode != commonpb.ErrorCode_Success {
|
|
msg := C.GoString(st.error_msg)
|
|
defer C.free(unsafe.Pointer(st.error_msg))
|
|
return nil, errors.New(msg)
|
|
}
|
|
|
|
slice := (*[1 << 28]float32)(unsafe.Pointer(cMsg))[:cSize:cSize]
|
|
return slice, nil
|
|
}
|
|
|
|
func (r *PayloadReader) GetDoubleFromPayload() ([]float64, error) {
|
|
if r.colType != schemapb.DataType_Double {
|
|
return nil, errors.New("incorrect data type")
|
|
}
|
|
|
|
var cMsg *C.double
|
|
var cSize C.int
|
|
|
|
st := C.GetDoubleFromPayload(r.payloadReaderPtr, &cMsg, &cSize)
|
|
errCode := commonpb.ErrorCode(st.error_code)
|
|
if errCode != commonpb.ErrorCode_Success {
|
|
msg := C.GoString(st.error_msg)
|
|
defer C.free(unsafe.Pointer(st.error_msg))
|
|
return nil, errors.New(msg)
|
|
}
|
|
|
|
slice := (*[1 << 28]float64)(unsafe.Pointer(cMsg))[:cSize:cSize]
|
|
return slice, nil
|
|
}
|
|
|
|
func (r *PayloadReader) GetOneStringFromPayload(idx int) (string, error) {
|
|
if r.colType != schemapb.DataType_String {
|
|
return "", errors.New("incorrect data type")
|
|
}
|
|
|
|
var cStr *C.char
|
|
var cSize C.int
|
|
|
|
st := C.GetOneStringFromPayload(r.payloadReaderPtr, C.int(idx), &cStr, &cSize)
|
|
|
|
errCode := commonpb.ErrorCode(st.error_code)
|
|
if errCode != commonpb.ErrorCode_Success {
|
|
msg := C.GoString(st.error_msg)
|
|
defer C.free(unsafe.Pointer(st.error_msg))
|
|
return "", errors.New(msg)
|
|
}
|
|
return C.GoStringN(cStr, cSize), nil
|
|
}
|
|
|
|
// ,dimension, error
|
|
func (r *PayloadReader) GetBinaryVectorFromPayload() ([]byte, int, error) {
|
|
if r.colType != schemapb.DataType_BinaryVector {
|
|
return nil, 0, errors.New("incorrect data type")
|
|
}
|
|
|
|
var cMsg *C.uint8_t
|
|
var cDim C.int
|
|
var cLen C.int
|
|
|
|
st := C.GetBinaryVectorFromPayload(r.payloadReaderPtr, &cMsg, &cDim, &cLen)
|
|
errCode := commonpb.ErrorCode(st.error_code)
|
|
if errCode != commonpb.ErrorCode_Success {
|
|
msg := C.GoString(st.error_msg)
|
|
defer C.free(unsafe.Pointer(st.error_msg))
|
|
return nil, 0, errors.New(msg)
|
|
}
|
|
length := (cDim / 8) * cLen
|
|
|
|
slice := (*[1 << 28]byte)(unsafe.Pointer(cMsg))[:length:length]
|
|
return slice, int(cDim), nil
|
|
}
|
|
|
|
// ,dimension, error
|
|
func (r *PayloadReader) GetFloatVectorFromPayload() ([]float32, int, error) {
|
|
if r.colType != schemapb.DataType_FloatVector {
|
|
return nil, 0, errors.New("incorrect data type")
|
|
}
|
|
|
|
var cMsg *C.float
|
|
var cDim C.int
|
|
var cLen C.int
|
|
|
|
st := C.GetFloatVectorFromPayload(r.payloadReaderPtr, &cMsg, &cDim, &cLen)
|
|
errCode := commonpb.ErrorCode(st.error_code)
|
|
if errCode != commonpb.ErrorCode_Success {
|
|
msg := C.GoString(st.error_msg)
|
|
defer C.free(unsafe.Pointer(st.error_msg))
|
|
return nil, 0, errors.New(msg)
|
|
}
|
|
length := cDim * cLen
|
|
|
|
slice := (*[1 << 28]float32)(unsafe.Pointer(cMsg))[:length:length]
|
|
return slice, int(cDim), nil
|
|
}
|
|
|
|
func (r *PayloadReader) GetPayloadLengthFromReader() (int, error) {
|
|
length := C.GetPayloadLengthFromReader(r.payloadReaderPtr)
|
|
return int(length), nil
|
|
}
|
|
|
|
func (r *PayloadReader) Close() error {
|
|
return r.ReleasePayloadReader()
|
|
}
|