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search_engine.go
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search_engine.go
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// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements. See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership. The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License. You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied. See the License for the
// specific language governing permissions and limitations
// under the License.
package service
import (
"context"
"sync"
"github.com/pingcap/errors"
"github.com/CocaineCong/tangseng/app/search_engine/service/recall"
"github.com/CocaineCong/tangseng/consts/e"
pb "github.com/CocaineCong/tangseng/idl/pb/search_engine"
"github.com/CocaineCong/tangseng/types"
)
var SearchEngineSrvIns *SearchEngineSrv
var SearchEngineSrvOnce sync.Once
type SearchEngineSrv struct {
pb.UnimplementedSearchEngineServiceServer
}
func GetSearchEngineSrv() *SearchEngineSrv {
SearchEngineSrvOnce.Do(func() {
SearchEngineSrvIns = &SearchEngineSrv{}
})
return SearchEngineSrvIns
}
// SearchEngineSearch 搜索
func (s *SearchEngineSrv) SearchEngineSearch(ctx context.Context, req *pb.SearchEngineRequest) (resp *pb.SearchEngineResponse, err error) {
resp = new(pb.SearchEngineResponse)
resp.Code = e.SUCCESS
query := req.Query
sResult, err := recall.SearchRecall(ctx, query)
if err != nil {
resp.Code = e.ERROR
resp.Msg = err.Error()
err = errors.WithMessage(err, "SearchEngineSearch-recall.SearchRecall error")
return
}
resp.SearchEngineInfoList, err = BuildSearchEngineResp(sResult)
if err != nil {
resp.Code = e.ERROR
resp.Msg = err.Error()
err = errors.WithMessage(err, "SearchEngineSearch-BuildSearchEngineResp error")
return
}
resp.Count = int64(len(sResult))
return
}
// WordAssociation 词语联想
func (s *SearchEngineSrv) WordAssociation(ctx context.Context, req *pb.SearchEngineRequest) (resp *pb.WordAssociationResponse, err error) {
resp = new(pb.WordAssociationResponse)
resp.Code = e.SUCCESS
query := req.Query
associationList, err := recall.SearchQuery(query)
if err != nil {
resp.Code = e.ERROR
resp.Msg = err.Error()
err = errors.WithMessage(err, "SearchEngineSearch-WordAssociation error")
return
}
resp.WordAssociationList = associationList
return
}
func BuildSearchEngineResp(item []*types.SearchItem) (resp []*pb.SearchEngineList, err error) {
resp = make([]*pb.SearchEngineList, 0)
for _, v := range item {
resp = append(resp, &pb.SearchEngineList{
UrlId: v.DocId,
Desc: v.Content,
Score: float32(v.Score),
})
}
return
}