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Issue search support elasticsearch (#9428)
* Issue search support elasticsearch * Fix lint * Add indexer name on app.ini * add a warnning on SearchIssuesByKeyword * improve code
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,230 @@ | ||
| // Copyright 2019 The Gitea Authors. All rights reserved. | ||
| // Use of this source code is governed by a MIT-style | ||
| // license that can be found in the LICENSE file. | ||
|
|
||
| package issues | ||
|
|
||
| import ( | ||
| "context" | ||
| "errors" | ||
| "fmt" | ||
| "strconv" | ||
| "time" | ||
|
|
||
| "code.gitea.io/gitea/modules/log" | ||
|
|
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| "github.com/olivere/elastic/v7" | ||
| ) | ||
|
|
||
| var ( | ||
| _ Indexer = &ElasticSearchIndexer{} | ||
| ) | ||
|
|
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| // ElasticSearchIndexer implements Indexer interface | ||
| type ElasticSearchIndexer struct { | ||
| client *elastic.Client | ||
| indexerName string | ||
| } | ||
|
|
||
| type elasticLogger struct { | ||
| *log.Logger | ||
| } | ||
|
|
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| func (l elasticLogger) Printf(format string, args ...interface{}) { | ||
| _ = l.Logger.Log(2, l.Logger.GetLevel(), format, args...) | ||
| } | ||
|
|
||
| // NewElasticSearchIndexer creates a new elasticsearch indexer | ||
| func NewElasticSearchIndexer(url, indexerName string) (*ElasticSearchIndexer, error) { | ||
| opts := []elastic.ClientOptionFunc{ | ||
| elastic.SetURL(url), | ||
| elastic.SetSniff(false), | ||
| elastic.SetHealthcheckInterval(10 * time.Second), | ||
| elastic.SetGzip(false), | ||
| } | ||
|
|
||
| logger := elasticLogger{log.GetLogger(log.DEFAULT)} | ||
|
|
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| if logger.GetLevel() == log.TRACE || logger.GetLevel() == log.DEBUG { | ||
| opts = append(opts, elastic.SetTraceLog(logger)) | ||
| } else if logger.GetLevel() == log.ERROR || logger.GetLevel() == log.CRITICAL || logger.GetLevel() == log.FATAL { | ||
| opts = append(opts, elastic.SetErrorLog(logger)) | ||
| } else if logger.GetLevel() == log.INFO || logger.GetLevel() == log.WARN { | ||
| opts = append(opts, elastic.SetInfoLog(logger)) | ||
| } | ||
|
|
||
| client, err := elastic.NewClient(opts...) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| return &ElasticSearchIndexer{ | ||
| client: client, | ||
| indexerName: indexerName, | ||
| }, nil | ||
| } | ||
|
|
||
| const ( | ||
| defaultMapping = `{ | ||
| "mappings": { | ||
| "properties": { | ||
| "id": { | ||
| "type": "integer", | ||
| "index": true | ||
| }, | ||
| "repo_id": { | ||
| "type": "integer", | ||
| "index": true | ||
| }, | ||
| "title": { | ||
| "type": "text", | ||
| "index": true | ||
| }, | ||
| "content": { | ||
| "type": "text", | ||
| "index": true | ||
| }, | ||
| "comments": { | ||
| "type" : "text", | ||
| "index": true | ||
| } | ||
| } | ||
| } | ||
| }` | ||
| ) | ||
|
|
||
| // Init will initialize the indexer | ||
| func (b *ElasticSearchIndexer) Init() (bool, error) { | ||
| ctx := context.Background() | ||
| exists, err := b.client.IndexExists(b.indexerName).Do(ctx) | ||
| if err != nil { | ||
| return false, err | ||
| } | ||
|
|
||
| if !exists { | ||
| var mapping = defaultMapping | ||
|
|
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| createIndex, err := b.client.CreateIndex(b.indexerName).BodyString(mapping).Do(ctx) | ||
| if err != nil { | ||
| return false, err | ||
| } | ||
| if !createIndex.Acknowledged { | ||
| return false, errors.New("init failed") | ||
| } | ||
|
|
||
| return false, nil | ||
| } | ||
| return true, nil | ||
| } | ||
|
|
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| // Index will save the index data | ||
| func (b *ElasticSearchIndexer) Index(issues []*IndexerData) error { | ||
| if len(issues) == 0 { | ||
| return nil | ||
| } else if len(issues) == 1 { | ||
| issue := issues[0] | ||
| _, err := b.client.Index(). | ||
| Index(b.indexerName). | ||
| Id(fmt.Sprintf("%d", issue.ID)). | ||
| BodyJson(map[string]interface{}{ | ||
| "id": issue.ID, | ||
| "repo_id": issue.RepoID, | ||
| "title": issue.Title, | ||
| "content": issue.Content, | ||
| "comments": issue.Comments, | ||
| }). | ||
| Do(context.Background()) | ||
| return err | ||
| } | ||
|
|
||
| reqs := make([]elastic.BulkableRequest, 0) | ||
| for _, issue := range issues { | ||
| reqs = append(reqs, | ||
| elastic.NewBulkIndexRequest(). | ||
| Index(b.indexerName). | ||
| Id(fmt.Sprintf("%d", issue.ID)). | ||
| Doc(map[string]interface{}{ | ||
| "id": issue.ID, | ||
| "repo_id": issue.RepoID, | ||
| "title": issue.Title, | ||
| "content": issue.Content, | ||
| "comments": issue.Comments, | ||
| }), | ||
| ) | ||
| } | ||
|
|
||
| _, err := b.client.Bulk(). | ||
| Index(b.indexerName). | ||
| Add(reqs...). | ||
| Do(context.Background()) | ||
| return err | ||
| } | ||
|
|
||
| // Delete deletes indexes by ids | ||
| func (b *ElasticSearchIndexer) Delete(ids ...int64) error { | ||
| if len(ids) == 0 { | ||
| return nil | ||
| } else if len(ids) == 1 { | ||
| _, err := b.client.Delete(). | ||
| Index(b.indexerName). | ||
| Id(fmt.Sprintf("%d", ids[0])). | ||
| Do(context.Background()) | ||
| return err | ||
| } | ||
|
|
||
| reqs := make([]elastic.BulkableRequest, 0) | ||
| for _, id := range ids { | ||
| reqs = append(reqs, | ||
| elastic.NewBulkDeleteRequest(). | ||
| Index(b.indexerName). | ||
| Id(fmt.Sprintf("%d", id)), | ||
| ) | ||
| } | ||
|
|
||
| _, err := b.client.Bulk(). | ||
| Index(b.indexerName). | ||
| Add(reqs...). | ||
| Do(context.Background()) | ||
| return err | ||
| } | ||
|
|
||
| // Search searches for issues by given conditions. | ||
| // Returns the matching issue IDs | ||
| func (b *ElasticSearchIndexer) Search(keyword string, repoIDs []int64, limit, start int) (*SearchResult, error) { | ||
| kwQuery := elastic.NewMultiMatchQuery(keyword, "title", "content", "comments") | ||
| query := elastic.NewBoolQuery() | ||
| query = query.Must(kwQuery) | ||
| if len(repoIDs) > 0 { | ||
| var repoStrs = make([]interface{}, 0, len(repoIDs)) | ||
| for _, repoID := range repoIDs { | ||
| repoStrs = append(repoStrs, repoID) | ||
| } | ||
| repoQuery := elastic.NewTermsQuery("repo_id", repoStrs...) | ||
| query = query.Must(repoQuery) | ||
| } | ||
| searchResult, err := b.client.Search(). | ||
| Index(b.indexerName). | ||
| Query(query). | ||
| Sort("id", true). | ||
| From(start).Size(limit). | ||
| Do(context.Background()) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
|
|
||
| hits := make([]Match, 0, limit) | ||
| for _, hit := range searchResult.Hits.Hits { | ||
| id, _ := strconv.ParseInt(hit.Id, 10, 64) | ||
| hits = append(hits, Match{ | ||
| ID: id, | ||
| }) | ||
| } | ||
|
|
||
| return &SearchResult{ | ||
| Total: searchResult.TotalHits(), | ||
| Hits: hits, | ||
| }, nil | ||
| } | ||
|
|
||
| // Close implements indexer | ||
| func (b *ElasticSearchIndexer) Close() {} |
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