mirror of
https://gitee.com/milvus-io/milvus.git
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110 lines
3.4 KiB
Go
110 lines
3.4 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 querynode
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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_segcore -Wl,-rpath=${SRCDIR}/../core/output/lib
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#include "segcore/plan_c.h"
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#include "segcore/reduce_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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"unsafe"
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)
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// SearchResult contains a pointer to the search result in C++ memory
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type SearchResult struct {
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cSearchResult C.CSearchResult
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}
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// MarshaledHits contains a pointer to the marshaled hits in C++ memory
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type MarshaledHits struct {
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cMarshaledHits C.CMarshaledHits
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}
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// RetrieveResult contains a pointer to the retrieve result in C++ memory
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type RetrieveResult struct {
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cRetrieveResult C.CRetrieveResult
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}
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func reduceSearchResultsAndFillData(plan *SearchPlan, searchResults []*SearchResult, numSegments int64) error {
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if plan.cSearchPlan == nil {
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return errors.New("nil search plan")
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}
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cSearchResults := make([]C.CSearchResult, 0)
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for _, res := range searchResults {
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cSearchResults = append(cSearchResults, res.cSearchResult)
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}
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cSearchResultPtr := (*C.CSearchResult)(&cSearchResults[0])
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cNumSegments := C.long(numSegments)
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status := C.ReduceSearchResultsAndFillData(plan.cSearchPlan, cSearchResultPtr, cNumSegments)
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if err := HandleCStatus(&status, "ReduceSearchResultsAndFillData failed"); err != nil {
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return err
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}
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return nil
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}
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func reorganizeSearchResults(searchResults []*SearchResult, numSegments int64) (*MarshaledHits, error) {
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cSearchResults := make([]C.CSearchResult, 0)
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for _, res := range searchResults {
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cSearchResults = append(cSearchResults, res.cSearchResult)
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}
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cSearchResultPtr := (*C.CSearchResult)(&cSearchResults[0])
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var cNumSegments = C.long(numSegments)
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var cMarshaledHits C.CMarshaledHits
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status := C.ReorganizeSearchResults(&cMarshaledHits, cSearchResultPtr, cNumSegments)
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if err := HandleCStatus(&status, "ReorganizeSearchResults failed"); err != nil {
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return nil, err
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}
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return &MarshaledHits{cMarshaledHits: cMarshaledHits}, nil
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}
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func (mh *MarshaledHits) getHitsBlobSize() int64 {
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res := C.GetHitsBlobSize(mh.cMarshaledHits)
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return int64(res)
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}
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func (mh *MarshaledHits) getHitsBlob() ([]byte, error) {
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byteSize := mh.getHitsBlobSize()
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result := make([]byte, byteSize)
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cResultPtr := unsafe.Pointer(&result[0])
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C.GetHitsBlob(mh.cMarshaledHits, cResultPtr)
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return result, nil
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}
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func (mh *MarshaledHits) hitBlobSizeInGroup(groupOffset int64) ([]int64, error) {
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cGroupOffset := (C.long)(groupOffset)
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numQueries := C.GetNumQueriesPerGroup(mh.cMarshaledHits, cGroupOffset)
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result := make([]int64, int64(numQueries))
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cResult := (*C.long)(&result[0])
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C.GetHitSizePerQueries(mh.cMarshaledHits, cGroupOffset, cResult)
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return result, nil
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}
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func deleteMarshaledHits(hits *MarshaledHits) {
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C.DeleteMarshaledHits(hits.cMarshaledHits)
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}
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func deleteSearchResults(results []*SearchResult) {
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for _, result := range results {
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C.DeleteSearchResult(result.cSearchResult)
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}
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}
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