mirror of
https://gitee.com/milvus-io/milvus.git
synced 2024-12-02 03:48:37 +08:00
295 lines
8.8 KiB
Go
295 lines
8.8 KiB
Go
package indexbuilder
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/*
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#cgo CFLAGS: -I${SRCDIR}/../core/output/include
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#cgo LDFLAGS: -L${SRCDIR}/../core/output/lib -lmilvus_indexbuilder -Wl,-rpath=${SRCDIR}/../core/output/lib
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#include <stdlib.h> // free
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#include "segcore/collection_c.h"
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#include "indexbuilder/index_c.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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"strconv"
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"unsafe"
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"github.com/golang/protobuf/proto"
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"github.com/zilliztech/milvus-distributed/internal/proto/commonpb"
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"github.com/zilliztech/milvus-distributed/internal/proto/indexcgopb"
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"github.com/zilliztech/milvus-distributed/internal/storage"
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)
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// TODO: use storage.Blob instead later
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type Blob = storage.Blob
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type Index interface {
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Serialize() ([]*Blob, error)
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Load([]*Blob) error
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BuildFloatVecIndexWithoutIds(vectors []float32) error
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BuildBinaryVecIndexWithoutIds(vectors []byte) error
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QueryOnFloatVecIndex(vectors []float32) (QueryResult, error)
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QueryOnBinaryVecIndex(vectors []byte) (QueryResult, error)
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QueryOnFloatVecIndexWithParam(vectors []float32, params map[string]string) (QueryResult, error)
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QueryOnBinaryVecIndexWithParam(vectors []byte, params map[string]string) (QueryResult, error)
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Delete() error
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}
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type CIndex struct {
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indexPtr C.CIndex
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}
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func (index *CIndex) Serialize() ([]*Blob, error) {
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/*
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CStatus
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SerializeToSlicedBuffer(CIndex index, int32_t* buffer_size, char** res_buffer);
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*/
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var cDumpedSlicedBuffer *C.char
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var bufferSize int32
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status := C.SerializeToSlicedBuffer(index.indexPtr, (*C.int32_t)(unsafe.Pointer(&bufferSize)), &cDumpedSlicedBuffer)
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errorCode := status.error_code
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if errorCode != 0 {
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errorMsg := C.GoString(status.error_msg)
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defer C.free(unsafe.Pointer(status.error_msg))
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return nil, errors.New("SerializeToSlicedBuffer failed, C runtime error detected, error code = " + strconv.Itoa(int(errorCode)) + ", error msg = " + errorMsg)
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}
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defer C.free(unsafe.Pointer(cDumpedSlicedBuffer))
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dumpedSlicedBuffer := C.GoBytes(unsafe.Pointer(cDumpedSlicedBuffer), (C.int32_t)(bufferSize))
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var blobs indexcgopb.BinarySet
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err := proto.Unmarshal(dumpedSlicedBuffer, &blobs)
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if err != nil {
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return nil, err
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}
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ret := make([]*Blob, 0)
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for _, data := range blobs.Datas {
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ret = append(ret, &Blob{Key: data.Key, Value: data.Value})
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}
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return ret, nil
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}
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func (index *CIndex) Load(blobs []*Blob) error {
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binarySet := &indexcgopb.BinarySet{Datas: make([]*indexcgopb.Binary, 0)}
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for _, blob := range blobs {
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binarySet.Datas = append(binarySet.Datas, &indexcgopb.Binary{Key: blob.Key, Value: blob.Value})
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}
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datas, err := proto.Marshal(binarySet)
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if err != nil {
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return err
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}
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/*
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CStatus
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LoadFromSlicedBuffer(CIndex index, const char* serialized_sliced_blob_buffer, int32_t size);
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*/
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status := C.LoadFromSlicedBuffer(index.indexPtr, (*C.char)(unsafe.Pointer(&datas[0])), (C.int32_t)(len(datas)))
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errorCode := status.error_code
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if errorCode != 0 {
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errorMsg := C.GoString(status.error_msg)
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defer C.free(unsafe.Pointer(status.error_msg))
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return errors.New("BuildFloatVecIndexWithoutIds failed, C runtime error detected, error code = " + strconv.Itoa(int(errorCode)) + ", error msg = " + errorMsg)
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}
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return nil
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}
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func (index *CIndex) BuildFloatVecIndexWithoutIds(vectors []float32) error {
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/*
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CStatus
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BuildFloatVecIndexWithoutIds(CIndex index, int64_t float_value_num, const float* vectors);
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*/
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status := C.BuildFloatVecIndexWithoutIds(index.indexPtr, (C.int64_t)(len(vectors)), (*C.float)(&vectors[0]))
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errorCode := status.error_code
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if errorCode != 0 {
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errorMsg := C.GoString(status.error_msg)
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defer C.free(unsafe.Pointer(status.error_msg))
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return errors.New("BuildFloatVecIndexWithoutIds failed, C runtime error detected, error code = " + strconv.Itoa(int(errorCode)) + ", error msg = " + errorMsg)
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}
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return nil
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}
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func (index *CIndex) BuildBinaryVecIndexWithoutIds(vectors []byte) error {
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/*
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CStatus
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BuildBinaryVecIndexWithoutIds(CIndex index, int64_t data_size, const uint8_t* vectors);
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*/
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status := C.BuildBinaryVecIndexWithoutIds(index.indexPtr, (C.int64_t)(len(vectors)), (*C.uint8_t)(&vectors[0]))
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errorCode := status.error_code
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if errorCode != 0 {
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errorMsg := C.GoString(status.error_msg)
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defer C.free(unsafe.Pointer(status.error_msg))
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return errors.New(" failed, C runtime error detected, error code = " + strconv.Itoa(int(errorCode)) + ", error msg = " + errorMsg)
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}
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return nil
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}
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func (index *CIndex) Delete() error {
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/*
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void
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DeleteIndex(CIndex index);
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*/
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C.DeleteIndex(index.indexPtr)
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// TODO: check if index.indexPtr will be released by golang, though it occupies little memory
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// C.free(index.indexPtr)
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return nil
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}
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func NewCIndex(typeParams, indexParams map[string]string) (Index, error) {
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protoTypeParams := &indexcgopb.TypeParams{
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Params: make([]*commonpb.KeyValuePair, 0),
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}
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for key, value := range typeParams {
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protoTypeParams.Params = append(protoTypeParams.Params, &commonpb.KeyValuePair{Key: key, Value: value})
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}
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typeParamsStr := proto.MarshalTextString(protoTypeParams)
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protoIndexParams := &indexcgopb.IndexParams{
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Params: make([]*commonpb.KeyValuePair, 0),
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}
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for key, value := range indexParams {
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protoIndexParams.Params = append(protoIndexParams.Params, &commonpb.KeyValuePair{Key: key, Value: value})
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}
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indexParamsStr := proto.MarshalTextString(protoIndexParams)
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typeParamsPointer := C.CString(typeParamsStr)
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indexParamsPointer := C.CString(indexParamsStr)
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/*
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CStatus
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CreateIndex(const char* serialized_type_params,
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const char* serialized_index_params,
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CIndex* res_index);
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*/
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var indexPtr C.CIndex
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status := C.CreateIndex(typeParamsPointer, indexParamsPointer, &indexPtr)
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errorCode := status.error_code
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if errorCode != 0 {
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errorMsg := C.GoString(status.error_msg)
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defer C.free(unsafe.Pointer(status.error_msg))
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return nil, errors.New(" failed, C runtime error detected, error code = " + strconv.Itoa(int(errorCode)) + ", error msg = " + errorMsg)
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}
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return &CIndex{
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indexPtr: indexPtr,
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}, nil
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}
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func (index *CIndex) QueryOnFloatVecIndex(vectors []float32) (QueryResult, error) {
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if len(vectors) <= 0 {
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return nil, errors.New("nq is zero")
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}
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res, err := CreateQueryResult()
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if err != nil {
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return nil, err
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}
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fn := func() C.CStatus {
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cRes, ok := res.(*CQueryResult)
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if !ok {
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// TODO: ugly here, fix me later
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panic("only CQueryResult is supported now!")
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}
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return C.QueryOnFloatVecIndex(index.indexPtr, (C.int64_t)(len(vectors)), (*C.float)(&vectors[0]), &cRes.ptr)
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}
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err = TryCatch(fn)
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if err != nil {
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return nil, err
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}
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return res, nil
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}
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func (index *CIndex) QueryOnBinaryVecIndex(vectors []byte) (QueryResult, error) {
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if len(vectors) <= 0 {
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return nil, errors.New("nq is zero")
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}
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res, err := CreateQueryResult()
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if err != nil {
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return nil, err
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}
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fn := func() C.CStatus {
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cRes, ok := res.(*CQueryResult)
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if !ok {
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// TODO: ugly here, fix me later
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panic("only CQueryResult is supported now!")
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}
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return C.QueryOnBinaryVecIndex(index.indexPtr, (C.int64_t)(len(vectors)), (*C.uint8_t)(&vectors[0]), &cRes.ptr)
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}
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err = TryCatch(fn)
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if err != nil {
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return nil, err
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}
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return res, nil
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}
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func (index *CIndex) QueryOnFloatVecIndexWithParam(vectors []float32, params map[string]string) (QueryResult, error) {
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if len(vectors) <= 0 {
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return nil, errors.New("nq is zero")
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}
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protoParams := &indexcgopb.MapParams{
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Params: make([]*commonpb.KeyValuePair, 0),
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}
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for key, value := range params {
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protoParams.Params = append(protoParams.Params, &commonpb.KeyValuePair{Key: key, Value: value})
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}
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paramsStr := proto.MarshalTextString(protoParams)
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paramsPointer := C.CString(paramsStr)
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res, err := CreateQueryResult()
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if err != nil {
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return nil, err
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}
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fn := func() C.CStatus {
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cRes, ok := res.(*CQueryResult)
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if !ok {
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// TODO: ugly here, fix me later
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panic("only CQueryResult is supported now!")
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}
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return C.QueryOnFloatVecIndexWithParam(index.indexPtr, (C.int64_t)(len(vectors)), (*C.float)(&vectors[0]), paramsPointer, &cRes.ptr)
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}
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err = TryCatch(fn)
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if err != nil {
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return nil, err
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}
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return res, nil
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}
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func (index *CIndex) QueryOnBinaryVecIndexWithParam(vectors []byte, params map[string]string) (QueryResult, error) {
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if len(vectors) <= 0 {
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return nil, errors.New("nq is zero")
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}
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protoParams := &indexcgopb.MapParams{
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Params: make([]*commonpb.KeyValuePair, 0),
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}
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for key, value := range params {
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protoParams.Params = append(protoParams.Params, &commonpb.KeyValuePair{Key: key, Value: value})
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}
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paramsStr := proto.MarshalTextString(protoParams)
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paramsPointer := C.CString(paramsStr)
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res, err := CreateQueryResult()
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if err != nil {
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return nil, err
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}
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fn := func() C.CStatus {
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cRes, ok := res.(*CQueryResult)
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if !ok {
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// TODO: ugly here, fix me later
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panic("only CQueryResult is supported now!")
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}
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return C.QueryOnBinaryVecIndexWithParam(index.indexPtr, (C.int64_t)(len(vectors)), (*C.uint8_t)(&vectors[0]), paramsPointer, &cRes.ptr)
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}
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err = TryCatch(fn)
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if err != nil {
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return nil, err
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}
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return res, nil
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}
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