mirror of
https://gitee.com/milvus-io/milvus.git
synced 2024-12-04 21:09:06 +08:00
140 lines
3.7 KiB
Go
140 lines
3.7 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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"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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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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char*
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SerializeToSlicedBuffer(CIndex index, int32_t* buffer_size);
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*/
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var bufferSize int32
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var cDumpedSlicedBuffer *C.char = C.SerializeToSlicedBuffer(index.indexPtr, (*C.int32_t)(unsafe.Pointer(&bufferSize)))
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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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void
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LoadFromSlicedBuffer(CIndex index, const char* serialized_sliced_blob_buffer, int32_t size);
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*/
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C.LoadFromSlicedBuffer(index.indexPtr, (*C.char)(unsafe.Pointer(&datas[0])), (C.int32_t)(len(datas)))
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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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void
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BuildFloatVecIndexWithoutIds(CIndex index, int64_t float_value_num, const float* vectors);
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*/
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C.BuildFloatVecIndexWithoutIds(index.indexPtr, (C.int64_t)(len(vectors)), (*C.float)(&vectors[0]))
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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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void
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BuildBinaryVecIndexWithoutIds(CIndex index, int64_t data_size, const uint8_t* vectors);
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*/
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C.BuildBinaryVecIndexWithoutIds(index.indexPtr, (C.int64_t)(len(vectors)), (*C.uint8_t)(&vectors[0]))
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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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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, err := proto.Marshal(protoTypeParams)
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if err != nil {
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return nil, err
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}
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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, err := proto.Marshal(protoIndexParams)
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if err != nil {
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return nil, err
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}
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/*
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CIndex
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CreateIndex(const char* serialized_type_params, const char* serialized_index_params);
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*/
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return &CIndex{
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indexPtr: C.CreateIndex((*C.char)(unsafe.Pointer(&typeParamsStr[0])), (*C.char)(unsafe.Pointer(&indexParamsStr[0]))),
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}, nil
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}
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