milvus/internal/querynode/segment.go

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package querynode
/*
#cgo CFLAGS: -I${SRCDIR}/../core/output/include
#cgo LDFLAGS: -L${SRCDIR}/../core/output/lib -lmilvus_segcore -Wl,-rpath=${SRCDIR}/../core/output/lib
#include "segcore/collection_c.h"
#include "segcore/plan_c.h"
#include "segcore/reduce_c.h"
*/
import "C"
import (
"strconv"
"unsafe"
"github.com/stretchr/testify/assert"
"github.com/zilliztech/milvus-distributed/internal/errors"
"github.com/zilliztech/milvus-distributed/internal/proto/commonpb"
)
type Segment struct {
segmentPtr C.CSegmentBase
segmentID UniqueID
lastMemSize int64
lastRowCount int64
recentlyModified bool
}
func (s *Segment) ID() UniqueID {
return s.segmentID
}
//-------------------------------------------------------------------------------------- constructor and destructor
func newSegment(collection *Collection, segmentID int64) *Segment {
/*
CSegmentBase
newSegment(CPartition partition, unsigned long segment_id);
*/
segmentPtr := C.NewSegment(collection.collectionPtr, C.ulong(segmentID))
var newSegment = &Segment{segmentPtr: segmentPtr, segmentID: segmentID}
return newSegment
}
func deleteSegment(segment *Segment) {
/*
void
deleteSegment(CSegmentBase segment);
*/
cPtr := segment.segmentPtr
C.DeleteSegment(cPtr)
}
//-------------------------------------------------------------------------------------- stats functions
func (s *Segment) getRowCount() int64 {
/*
long int
getRowCount(CSegmentBase c_segment);
*/
var rowCount = C.GetRowCount(s.segmentPtr)
return int64(rowCount)
}
func (s *Segment) getDeletedCount() int64 {
/*
long int
getDeletedCount(CSegmentBase c_segment);
*/
var deletedCount = C.GetDeletedCount(s.segmentPtr)
return int64(deletedCount)
}
func (s *Segment) getMemSize() int64 {
/*
long int
GetMemoryUsageInBytes(CSegmentBase c_segment);
*/
var memoryUsageInBytes = C.GetMemoryUsageInBytes(s.segmentPtr)
return int64(memoryUsageInBytes)
}
//-------------------------------------------------------------------------------------- preDm functions
func (s *Segment) segmentPreInsert(numOfRecords int) int64 {
/*
long int
PreInsert(CSegmentBase c_segment, long int size);
*/
var offset = C.PreInsert(s.segmentPtr, C.long(int64(numOfRecords)))
return int64(offset)
}
func (s *Segment) segmentPreDelete(numOfRecords int) int64 {
/*
long int
PreDelete(CSegmentBase c_segment, long int size);
*/
var offset = C.PreDelete(s.segmentPtr, C.long(int64(numOfRecords)))
return int64(offset)
}
//-------------------------------------------------------------------------------------- dm & search functions
func (s *Segment) segmentInsert(offset int64, entityIDs *[]UniqueID, timestamps *[]Timestamp, records *[]*commonpb.Blob) error {
/*
CStatus
Insert(CSegmentBase c_segment,
long int reserved_offset,
signed long int size,
const long* primary_keys,
const unsigned long* timestamps,
void* raw_data,
int sizeof_per_row,
signed long int count);
*/
// Blobs to one big blob
var numOfRow = len(*entityIDs)
var sizeofPerRow = len((*records)[0].Value)
assert.Equal(nil, numOfRow, len(*records))
var rawData = make([]byte, numOfRow*sizeofPerRow)
var copyOffset = 0
for i := 0; i < len(*records); i++ {
copy(rawData[copyOffset:], (*records)[i].Value)
copyOffset += sizeofPerRow
}
var cOffset = C.long(offset)
var cNumOfRows = C.long(numOfRow)
var cEntityIdsPtr = (*C.long)(&(*entityIDs)[0])
var cTimestampsPtr = (*C.ulong)(&(*timestamps)[0])
var cSizeofPerRow = C.int(sizeofPerRow)
var cRawDataVoidPtr = unsafe.Pointer(&rawData[0])
var status = C.Insert(s.segmentPtr,
cOffset,
cNumOfRows,
cEntityIdsPtr,
cTimestampsPtr,
cRawDataVoidPtr,
cSizeofPerRow,
cNumOfRows)
errorCode := status.error_code
if errorCode != 0 {
errorMsg := C.GoString(status.error_msg)
defer C.free(unsafe.Pointer(status.error_msg))
return errors.New("Insert failed, C runtime error detected, error code = " + strconv.Itoa(int(errorCode)) + ", error msg = " + errorMsg)
}
s.recentlyModified = true
return nil
}
func (s *Segment) segmentDelete(offset int64, entityIDs *[]UniqueID, timestamps *[]Timestamp) error {
/*
CStatus
Delete(CSegmentBase c_segment,
long int reserved_offset,
long size,
const long* primary_keys,
const unsigned long* timestamps);
*/
var cOffset = C.long(offset)
var cSize = C.long(len(*entityIDs))
var cEntityIdsPtr = (*C.long)(&(*entityIDs)[0])
var cTimestampsPtr = (*C.ulong)(&(*timestamps)[0])
var status = C.Delete(s.segmentPtr, cOffset, cSize, cEntityIdsPtr, cTimestampsPtr)
errorCode := status.error_code
if errorCode != 0 {
errorMsg := C.GoString(status.error_msg)
defer C.free(unsafe.Pointer(status.error_msg))
return errors.New("Delete failed, C runtime error detected, error code = " + strconv.Itoa(int(errorCode)) + ", error msg = " + errorMsg)
}
return nil
}
func (s *Segment) segmentSearch(plan *Plan,
placeHolderGroups []*PlaceholderGroup,
timestamp []Timestamp) (*SearchResult, error) {
/*
CStatus
Search(void* plan,
void* placeholder_groups,
uint64_t* timestamps,
int num_groups,
long int* result_ids,
float* result_distances);
*/
cPlaceholderGroups := make([]C.CPlaceholderGroup, 0)
for _, pg := range placeHolderGroups {
cPlaceholderGroups = append(cPlaceholderGroups, (*pg).cPlaceholderGroup)
}
var searchResult SearchResult
var cTimestamp = (*C.ulong)(&timestamp[0])
var cPlaceHolder = (*C.CPlaceholderGroup)(&cPlaceholderGroups[0])
var cNumGroups = C.int(len(placeHolderGroups))
var cQueryResult = (*C.CQueryResult)(&searchResult.cQueryResult)
var status = C.Search(s.segmentPtr, plan.cPlan, cPlaceHolder, cTimestamp, cNumGroups, cQueryResult)
errorCode := status.error_code
if errorCode != 0 {
errorMsg := C.GoString(status.error_msg)
defer C.free(unsafe.Pointer(status.error_msg))
return nil, errors.New("Search failed, C runtime error detected, error code = " + strconv.Itoa(int(errorCode)) + ", error msg = " + errorMsg)
}
return &searchResult, nil
}
func (s *Segment) fillTargetEntry(plan *Plan,
result *SearchResult) error {
var status = C.FillTargetEntry(s.segmentPtr, plan.cPlan, result.cQueryResult)
errorCode := status.error_code
if errorCode != 0 {
errorMsg := C.GoString(status.error_msg)
defer C.free(unsafe.Pointer(status.error_msg))
return errors.New("FillTargetEntry failed, C runtime error detected, error code = " + strconv.Itoa(int(errorCode)) + ", error msg = " + errorMsg)
}
return nil
}