mirror of
https://gitee.com/milvus-io/milvus.git
synced 2024-12-03 04:19:18 +08:00
342 lines
10 KiB
Go
342 lines
10 KiB
Go
package indexcgowrapper
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/*
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#cgo pkg-config: milvus_indexbuilder
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#include <stdlib.h> // free
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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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"fmt"
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"path/filepath"
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"runtime"
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"unsafe"
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"github.com/milvus-io/milvus/internal/proto/indexpb"
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"github.com/golang/protobuf/proto"
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"github.com/milvus-io/milvus-proto/go-api/commonpb"
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"github.com/milvus-io/milvus-proto/go-api/schemapb"
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"github.com/milvus-io/milvus/internal/log"
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"github.com/milvus-io/milvus/internal/proto/indexcgopb"
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"github.com/milvus-io/milvus/internal/storage"
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)
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type Blob = storage.Blob
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type IndexFileInfo struct {
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FileName string
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FileSize int64
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}
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type CodecIndex interface {
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Build(*Dataset) error
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Serialize() ([]*Blob, error)
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GetIndexFileInfo() ([]*IndexFileInfo, error)
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Load([]*Blob) error
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Delete() error
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CleanLocalData() error
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}
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var (
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_ CodecIndex = (*CgoIndex)(nil)
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)
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type CgoIndex struct {
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indexPtr C.CIndex
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close bool
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}
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// TODO: use proto.Marshal instead of proto.MarshalTextString for better compatibility.
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func NewCgoIndex(dtype schemapb.DataType, typeParams, indexParams map[string]string, config *indexpb.StorageConfig) (CodecIndex, 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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defer C.free(unsafe.Pointer(typeParamsPointer))
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defer C.free(unsafe.Pointer(indexParamsPointer))
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// TODO::xige-16 support embedded milvus
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storageType := "minio"
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cAddress := C.CString(config.Address)
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cBucketName := C.CString(config.GetBucketName())
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cAccessKey := C.CString(config.GetAccessKeyID())
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cAccessValue := C.CString(config.GetSecretAccessKey())
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cRootPath := C.CString(config.GetRootPath())
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cStorageType := C.CString(storageType)
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cIamEndPoint := C.CString(config.GetIAMEndpoint())
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defer C.free(unsafe.Pointer(cAddress))
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defer C.free(unsafe.Pointer(cBucketName))
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defer C.free(unsafe.Pointer(cAccessKey))
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defer C.free(unsafe.Pointer(cAccessValue))
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defer C.free(unsafe.Pointer(cRootPath))
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defer C.free(unsafe.Pointer(cStorageType))
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defer C.free(unsafe.Pointer(cIamEndPoint))
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storageConfig := C.CStorageConfig{
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address: cAddress,
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bucket_name: cBucketName,
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access_key_id: cAccessKey,
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access_key_value: cAccessValue,
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remote_root_path: cRootPath,
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storage_type: cStorageType,
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iam_endpoint: cIamEndPoint,
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useSSL: C.bool(config.GetUseSSL()),
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useIAM: C.bool(config.GetUseIAM()),
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}
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var indexPtr C.CIndex
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cintDType := uint32(dtype)
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status := C.CreateIndex(cintDType, typeParamsPointer, indexParamsPointer, &indexPtr, storageConfig)
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if err := HandleCStatus(&status, "failed to create index"); err != nil {
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return nil, err
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}
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index := &CgoIndex{
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indexPtr: indexPtr,
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close: false,
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}
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runtime.SetFinalizer(index, func(index *CgoIndex) {
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if index != nil && !index.close {
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log.Error("there is leakage in index object, please check.")
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}
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})
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return index, nil
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}
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func (index *CgoIndex) Build(dataset *Dataset) error {
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switch dataset.DType {
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case schemapb.DataType_None:
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return fmt.Errorf("build index on supported data type: %s", dataset.DType.String())
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case schemapb.DataType_FloatVector:
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return index.buildFloatVecIndex(dataset)
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case schemapb.DataType_BinaryVector:
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return index.buildBinaryVecIndex(dataset)
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case schemapb.DataType_Bool:
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return index.buildBoolIndex(dataset)
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case schemapb.DataType_Int8:
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return index.buildInt8Index(dataset)
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case schemapb.DataType_Int16:
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return index.buildInt16Index(dataset)
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case schemapb.DataType_Int32:
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return index.buildInt32Index(dataset)
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case schemapb.DataType_Int64:
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return index.buildInt64Index(dataset)
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case schemapb.DataType_Float:
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return index.buildFloatIndex(dataset)
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case schemapb.DataType_Double:
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return index.buildDoubleIndex(dataset)
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case schemapb.DataType_String:
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return index.buildStringIndex(dataset)
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case schemapb.DataType_VarChar:
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return index.buildStringIndex(dataset)
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default:
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return fmt.Errorf("build index on unsupported data type: %s", dataset.DType.String())
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}
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}
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func (index *CgoIndex) buildFloatVecIndex(dataset *Dataset) error {
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vectors := dataset.Data[keyRawArr].([]float32)
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status := C.BuildFloatVecIndex(index.indexPtr, (C.int64_t)(len(vectors)), (*C.float)(&vectors[0]))
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return HandleCStatus(&status, "failed to build float vector index")
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}
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func (index *CgoIndex) buildBinaryVecIndex(dataset *Dataset) error {
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vectors := dataset.Data[keyRawArr].([]byte)
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status := C.BuildBinaryVecIndex(index.indexPtr, (C.int64_t)(len(vectors)), (*C.uint8_t)(&vectors[0]))
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return HandleCStatus(&status, "failed to build binary vector index")
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}
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// TODO: investigate if we can pass an bool array to cgo.
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func (index *CgoIndex) buildBoolIndex(dataset *Dataset) error {
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arr := dataset.Data[keyRawArr].([]bool)
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f := &schemapb.BoolArray{
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Data: arr,
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}
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data, err := proto.Marshal(f)
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if err != nil {
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return err
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}
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status := C.BuildScalarIndex(index.indexPtr, (C.int64_t)(len(data)), unsafe.Pointer(&data[0]))
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return HandleCStatus(&status, "failed to build scalar index")
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}
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// TODO: refactor these duplicated code after generic programming is supported.
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func (index *CgoIndex) buildInt8Index(dataset *Dataset) error {
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data := dataset.Data[keyRawArr].([]int8)
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status := C.BuildScalarIndex(index.indexPtr, (C.int64_t)(len(data)), unsafe.Pointer(&data[0]))
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return HandleCStatus(&status, "failed to build scalar index")
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}
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func (index *CgoIndex) buildInt16Index(dataset *Dataset) error {
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data := dataset.Data[keyRawArr].([]int16)
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status := C.BuildScalarIndex(index.indexPtr, (C.int64_t)(len(data)), unsafe.Pointer(&data[0]))
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return HandleCStatus(&status, "failed to build scalar index")
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}
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func (index *CgoIndex) buildInt32Index(dataset *Dataset) error {
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data := dataset.Data[keyRawArr].([]int32)
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status := C.BuildScalarIndex(index.indexPtr, (C.int64_t)(len(data)), unsafe.Pointer(&data[0]))
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return HandleCStatus(&status, "failed to build scalar index")
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}
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func (index *CgoIndex) buildInt64Index(dataset *Dataset) error {
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data := dataset.Data[keyRawArr].([]int64)
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status := C.BuildScalarIndex(index.indexPtr, (C.int64_t)(len(data)), unsafe.Pointer(&data[0]))
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return HandleCStatus(&status, "failed to build scalar index")
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}
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func (index *CgoIndex) buildFloatIndex(dataset *Dataset) error {
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data := dataset.Data[keyRawArr].([]float32)
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status := C.BuildScalarIndex(index.indexPtr, (C.int64_t)(len(data)), unsafe.Pointer(&data[0]))
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return HandleCStatus(&status, "failed to build scalar index")
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}
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func (index *CgoIndex) buildDoubleIndex(dataset *Dataset) error {
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data := dataset.Data[keyRawArr].([]float64)
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status := C.BuildScalarIndex(index.indexPtr, (C.int64_t)(len(data)), unsafe.Pointer(&data[0]))
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return HandleCStatus(&status, "failed to build scalar index")
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}
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func (index *CgoIndex) buildStringIndex(dataset *Dataset) error {
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arr := dataset.Data[keyRawArr].([]string)
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f := &schemapb.StringArray{
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Data: arr,
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}
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data, err := proto.Marshal(f)
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if err != nil {
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return err
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}
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status := C.BuildScalarIndex(index.indexPtr, (C.int64_t)(len(data)), unsafe.Pointer(&data[0]))
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return HandleCStatus(&status, "failed to build scalar index")
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}
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func (index *CgoIndex) Serialize() ([]*Blob, error) {
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var cBinarySet C.CBinarySet
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status := C.SerializeIndexToBinarySet(index.indexPtr, &cBinarySet)
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defer func() {
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if cBinarySet != nil {
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C.DeleteBinarySet(cBinarySet)
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}
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}()
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if err := HandleCStatus(&status, "failed to serialize index to binary set"); err != nil {
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return nil, err
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}
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keys, err := GetBinarySetKeys(cBinarySet)
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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 _, key := range keys {
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value, err := GetBinarySetValue(cBinarySet, key)
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if err != nil {
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return nil, err
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}
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size, err := GetBinarySetSize(cBinarySet, key)
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if err != nil {
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return nil, err
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}
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blob := &Blob{
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Key: key,
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Value: value,
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Size: size,
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}
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ret = append(ret, blob)
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}
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return ret, nil
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}
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func (index *CgoIndex) GetIndexFileInfo() ([]*IndexFileInfo, error) {
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var cBinarySet C.CBinarySet
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status := C.SerializeIndexToBinarySet(index.indexPtr, &cBinarySet)
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defer func() {
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if cBinarySet != nil {
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C.DeleteBinarySet(cBinarySet)
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}
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}()
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if err := HandleCStatus(&status, "failed to serialize index to binary set"); err != nil {
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return nil, err
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}
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keys, err := GetBinarySetKeys(cBinarySet)
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if err != nil {
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return nil, err
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}
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ret := make([]*IndexFileInfo, 0)
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for _, key := range keys {
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size, err := GetBinarySetSize(cBinarySet, key)
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if err != nil {
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return nil, err
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}
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info := &IndexFileInfo{
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FileName: key,
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FileSize: size,
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}
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ret = append(ret, info)
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}
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return ret, nil
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}
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func (index *CgoIndex) Load(blobs []*Blob) error {
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var cBinarySet C.CBinarySet
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status := C.NewBinarySet(&cBinarySet)
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defer C.DeleteBinarySet(cBinarySet)
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if err := HandleCStatus(&status, "failed to load index"); err != nil {
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return err
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}
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for _, blob := range blobs {
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key := blob.Key
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byteIndex := blob.Value
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indexPtr := unsafe.Pointer(&byteIndex[0])
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indexLen := C.int64_t(len(byteIndex))
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binarySetKey := filepath.Base(key)
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indexKey := C.CString(binarySetKey)
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status = C.AppendIndexBinary(cBinarySet, indexPtr, indexLen, indexKey)
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C.free(unsafe.Pointer(indexKey))
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if err := HandleCStatus(&status, "failed to load index"); err != nil {
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return err
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}
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}
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status = C.LoadIndexFromBinarySet(index.indexPtr, cBinarySet)
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return HandleCStatus(&status, "failed to load index")
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}
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func (index *CgoIndex) Delete() error {
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if index.close {
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return nil
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}
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status := C.DeleteIndex(index.indexPtr)
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index.close = true
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return HandleCStatus(&status, "failed to delete index")
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}
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func (index *CgoIndex) CleanLocalData() error {
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status := C.CleanLocalData(index.indexPtr)
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return HandleCStatus(&status, "failed to clean cached data on disk")
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}
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