/
fulltextsearch.go
310 lines (270 loc) · 9.27 KB
/
fulltextsearch.go
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package service
import (
"context"
"encoding/json"
"fmt"
"strings"
"unicode/utf8"
"configcenter/src/common"
"configcenter/src/common/blog"
"configcenter/src/common/http/rest"
"configcenter/src/common/util"
"github.com/olivere/elastic/v7"
)
const (
ESIndexPrefix = "cmdb"
TypeHost = "host"
TypeObject = "object"
TypeApplication = "biz"
BkBizMetaKey = "metadata.label.bk_biz_id"
)
var (
SpecialChar = []string{"`", "~", "!", "@", "#", "$", "%", "^", "&", "*",
"(", ")", "-", "_", "=", "+", "[", "{", "]", "}",
"\\", "|", ";", ":", "'", "\"", ",", "<", ".", ">", "/", "?"}
)
type SearchResult struct {
Source map[string]interface{} `json:"source"` // data from mongo, key/value
Highlight map[string][]string `json:"highlight"`
Type string `json:"type"` // object, host, process, model
Score float64 `json:"score"`
}
type Aggregation struct {
Key interface{} `json:"key"`
Count int64 `json:"count"`
}
type SearchResults struct {
Total int64 `json:"total"`
Aggregations []Aggregation `json:"aggregations"`
Hits []SearchResult `json:"hits"`
}
type Page struct {
Start int `json:"start"`
Limit int `json:"limit"`
}
type Query struct {
Paging Page `json:"page"`
QueryString string `json:"query_string"`
TypeFilter []string `json:"filter"`
BkObjId string `json:"bk_obj_id"`
BkBizId string `json:"bk_biz_id"`
}
func NewQuery() *Query {
query := new(Query)
// set paging default
query.Paging.Start = -1
query.Paging.Limit = -1
query.BkObjId = ""
query.BkBizId = ""
return query
}
func (s *Service) FullTextFind(ctx *rest.Contexts) {
if s.Es.Client == nil {
blog.Errorf("FullTextFind failed, es client is nil, rid: %s", ctx.Kit.Rid)
ctx.RespAutoError(ctx.Kit.CCError.CCError(common.CCErrorTopoFullTextClientNotInitialized))
return
}
query := NewQuery()
if err := ctx.DecodeInto(query); err != nil {
ctx.RespAutoError(err)
return
}
if query.QueryString == "" {
ctx.RespAutoError(ctx.Kit.CCError.CCError(common.CCErrCommParamsIsInvalid))
return
}
// check query string
rawString, ok := query.checkQueryString()
if !ok {
blog.Errorf("full_text_find failed, query string [%s] large than 32, rid: %s", rawString, ctx.Kit.Rid)
ctx.RespAutoError(ctx.Kit.CCError.CCErrorf(common.CCErrCommParamsIsInvalid, "query_string"))
return
}
// get query and search indexs
esQuery, indexs := query.toEsBoolQueryAndIndexs()
result, err := s.Es.Search(ctx.Kit.Ctx, esQuery, indexs, query.Paging.Start, query.Paging.Limit)
if err != nil {
blog.Errorf("full_text_find failed, es search failed, err: %+v, rid: %s", err, ctx.Kit.Rid)
ctx.RespAutoError(ctx.Kit.CCError.CCError(common.CCErrorTopoFullTextFindErr))
return
}
// result is hits and aggregations
searchResults := new(SearchResults)
searchResults.Total = result.Hits.TotalHits.Value
// set hits
for _, hit := range result.Hits.Hits {
sr := SearchResult{}
sr.setHit(ctx.Kit.Ctx, hit, query.BkBizId, rawString)
searchResults.Hits = append(searchResults.Hits, sr)
}
keyMap := make(map[string]int64)
notFoundKey := make(map[string]int64)
indexArggr, found := result.Aggregations.Terms(common.IndexAggName)
if found == true && indexArggr != nil {
for _, bucket := range indexArggr.Buckets {
// only cc_HostBase, cc_ApplicationBase currently
if bucket.Key == getESIndexByCollection(common.BKTableNameBaseHost) ||
bucket.Key == getESIndexByCollection(common.BKTableNameBaseApp) {
agg := Aggregation{}
agg.setAgg(bucket)
searchResults.Aggregations = append(searchResults.Aggregations, agg)
keyMap[util.GetStrByInterface(agg.Key)] = agg.Count
}
}
}
// fix aggregation data incomplete problem
for _, hit := range searchResults.Hits {
if val, ok := hit.Source[common.BKObjIDField]; ok == true {
objID := util.GetStrByInterface(val)
if _, exist := keyMap[objID]; exist == false {
if _, ok := notFoundKey[objID]; ok == false {
notFoundKey[objID] = 0
}
notFoundKey[objID]++
}
}
}
for key, count := range notFoundKey {
agg := Aggregation{
Key: key,
Count: count,
}
searchResults.Aggregations = append(searchResults.Aggregations, agg)
}
ctx.RespEntity(searchResults)
}
func (query Query) checkQueryString() (string, bool) {
// if query string is single string in SpecialChar, make it to null string
for i := range SpecialChar {
if query.QueryString == SpecialChar[i] {
query.QueryString = ""
return "", true
}
}
rawString := strings.Replace(query.QueryString, "*", "", -1)
// judge string if large than 32
if utf8.RuneCountInString(rawString) > 32 {
return rawString, false
} else {
return rawString, true
}
}
func (query Query) toEsBoolQueryAndIndexs() (elastic.Query, []string) {
qBool := elastic.NewBoolQuery()
// if set bk_biz_id
qBool.MinimumNumberShouldMatch(1)
qBizRegex := elastic.NewRegexpQuery(BkBizMetaKey, "[0-9]*")
qBizBool := elastic.NewBoolQuery()
qBizBool.MustNot(qBizRegex)
qBool.Should(qBizBool)
if query.BkBizId != "" {
qBizTerm := elastic.NewTermQuery(BkBizMetaKey, query.BkBizId)
qBool.Should(qBizTerm)
}
// biz name
resourcePool := elastic.NewMatchQuery(common.BKAppNameField, "资源池")
qBool.MustNot(resourcePool)
// ignore bk_supplier_account
qSupplierMatch := elastic.NewMatchQuery(common.BkSupplierAccount, query.QueryString)
qBool.MustNot(qSupplierMatch)
qString := elastic.NewQueryStringQuery(query.QueryString)
qBool.Must(qString)
if query.BkObjId == "" {
// if bk_obj_id is "", we search all indexs
indexs := make([]string, 0)
indexs = append(indexs, getESIndexByCollection(common.BKTableNameBaseApp))
indexs = append(indexs, getESIndexByCollection(common.BKTableNameBaseHost))
indexs = append(indexs, getESIndexByCollection(common.BKTableNameBaseInst))
return qBool, indexs
} else if query.BkObjId == TypeHost {
// if bk_obj_id is host, we search only from type cc_HostBase
indexs := []string{getESIndexByCollection(common.BKTableNameBaseHost)}
return qBool.Must(qString), indexs
} else if query.BkObjId == TypeApplication {
// if bk_obj_id is biz, we search only from type cc_ApplicationBase
indexs := []string{getESIndexByCollection(common.BKTableNameBaseApp)}
return qBool.Must(qString), indexs
} else {
// if define bk_obj_id, we use bool query include must(bk_obj_id=xxx) and should(query string)
qBool.Must(elastic.NewTermQuery("bk_obj_id", query.BkObjId))
qBool.Must(qString)
indexs := []string{getESIndexByCollection(common.BKTableNameBaseInst)}
return qBool, indexs
}
}
func (agg *Aggregation) setAgg(bucket *elastic.AggregationBucketKeyItem) {
if bucket.Key == getESIndexByCollection(common.BKTableNameBaseHost) {
agg.Key = TypeHost
} else if bucket.Key == getESIndexByCollection(common.BKTableNameBaseApp) {
agg.Key = TypeApplication
} else {
agg.Key = bucket.Key
}
agg.Count = bucket.DocCount
}
func (sr *SearchResult) setHit(ctx context.Context, searchHit *elastic.SearchHit, bkBizId, rawString string) {
rid := util.ExtractRequestIDFromContext(ctx)
sr.Score = *searchHit.Score
// sr.Highlight = searchHit.Highlight
err := json.Unmarshal(searchHit.Source, &(sr.Source))
if err != nil {
blog.Warnf("full_text_find unmarshal search result source err: %+v, rid: %s", err, rid)
sr.Source = nil
}
switch searchHit.Index {
case getESIndexByCollection(common.BKTableNameBaseApp):
sr.Type = TypeApplication
case getESIndexByCollection(common.BKTableNameBaseHost):
sr.Type = TypeHost
case getESIndexByCollection(common.BKTableNameBaseInst):
sr.Type = TypeObject
}
sr.dealHighlight(sr.Source, searchHit.Highlight, bkBizId, rawString)
}
func (sr *SearchResult) dealHighlight(source map[string]interface{}, highlight elastic.SearchHitHighlight, bkBizId, rawString string) {
isObject := true
var bkObjId, oldHighlightObjId string
if _, ok := source["bk_obj_id"]; ok {
bkObjId = source["bk_obj_id"].(string)
oldHighlightObjId = "<em>" + bkObjId + "</em>"
} else {
isObject = false
}
oldHighlightBizId := "<em>" + bkBizId + "</em>"
for key, values := range highlight {
if key == "bk_obj_id" || key == "bk_obj_id.keyword" {
// judge if raw query string in bk_obj_id, if not, ignore bk_obj_id highlight
rawStringInObjId := false
for _, value := range values {
if strings.Contains(value, rawString) {
rawStringInObjId = true
break
} else {
continue
}
}
if !rawStringInObjId {
delete(highlight, key)
}
} else if key == "metadata.label.bk_biz_id" || key == "metadata.label.bk_biz_id.keyword" {
delete(highlight, key)
} else {
// we don't need highlight with bk_obj_id and bk_biz_id, just like <em>bk_obj_id</em>, <em>bk_biz_id</em>
// replace it <em>bk_obj_id</em> be bk_obj_id (do not need <em>)
for i := range values {
if isObject && strings.Contains(values[i], oldHighlightObjId) {
values[i] = strings.Replace(values[i], oldHighlightObjId, bkObjId, -1)
}
if strings.Contains(values[i], oldHighlightBizId) {
values[i] = strings.Replace(values[i], oldHighlightBizId, bkBizId, -1)
}
}
}
}
sr.Highlight = highlight
}
// getESIndexByCollection get the index of es through ESIndexPrefix and collection's name
func getESIndexByCollection(collectionName string) string {
collectionName = strings.ToLower(collectionName)
return fmt.Sprintf("%s.%s", strings.ToLower(ESIndexPrefix), collectionName)
}