mirror of
https://gitee.com/milvus-io/milvus.git
synced 2024-12-03 04:19:18 +08:00
109 lines
3.1 KiB
Go
109 lines
3.1 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/collection_c.h"
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#include "common/type_c.h"
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#include "segcore/segment_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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"fmt"
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"github.com/golang/protobuf/proto"
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"github.com/milvus-io/milvus/internal/log"
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"github.com/milvus-io/milvus/internal/proto/commonpb"
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"github.com/milvus-io/milvus/internal/proto/schemapb"
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"unsafe"
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)
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// ProtoCGo is protobuf created by go side,
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// passed to c side
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// memory is managed by go GC
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type ProtoCGo struct {
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CProto C.CProto
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blob []byte
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}
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// MarshalForCGo convert golang proto to ProtoCGo
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func MarshalForCGo(msg proto.Message) (*ProtoCGo, error) {
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blob, err := proto.Marshal(msg)
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if err != nil {
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return nil, err
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}
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protoCGo := &ProtoCGo{
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blob: blob,
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CProto: C.CProto{
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proto_size: (C.int64_t)(len(blob)),
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proto_blob: unsafe.Pointer(&blob[0]),
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},
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}
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return protoCGo, nil
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}
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// destruct free ProtoCGo go memory
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func (protoCGo *ProtoCGo) destruct() {
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// NOTE: at ProtoCGo, blob is go heap memory, no need to destruct
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protoCGo.blob = nil
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}
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// HandleCStatus deal with the error returned from CGO
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func HandleCStatus(status *C.CStatus, extraInfo string) error {
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if status.error_code == 0 {
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return nil
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}
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errorCode := status.error_code
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errorName, ok := commonpb.ErrorCode_name[int32(errorCode)]
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if !ok {
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errorName = "UnknownError"
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}
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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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finalMsg := fmt.Sprintf("[%s] %s", errorName, errorMsg)
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logMsg := fmt.Sprintf("%s, C Runtime Exception: %s\n", extraInfo, finalMsg)
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log.Warn(logMsg)
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return errors.New(finalMsg)
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}
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// HandleCProtoResult deal with the result proto returned from CGO
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func HandleCProtoResult(cRes *C.CProtoResult, msg proto.Message) error {
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// Standalone CProto is protobuf created by C side,
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// Passed from c side
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// memory is managed manually
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err := HandleCStatus(&cRes.status, "")
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if err != nil {
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return err
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}
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cpro := cRes.proto
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blob := C.GoBytes(unsafe.Pointer(cpro.proto_blob), C.int32_t(cpro.proto_size))
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defer C.free(cpro.proto_blob)
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return proto.Unmarshal(blob, msg)
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}
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// TestBoolArray this function will accept a BoolArray input,
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// and return a BoolArray output
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// which negates all elements of the input
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func TestBoolArray(cpb *ProtoCGo) (*schemapb.BoolArray, error) {
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res := C.CTestBoolArrayPb(cpb.CProto)
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ba := new(schemapb.BoolArray)
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err := HandleCProtoResult(&res, ba)
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return ba, err
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}
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