137 lines
4.1 KiB
Go
137 lines
4.1 KiB
Go
// Copyright 2017 The Gitea Authors. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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package indexer
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import (
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"code.gitea.io/gitea/modules/log"
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"code.gitea.io/gitea/modules/setting"
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"github.com/blevesearch/bleve"
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"github.com/blevesearch/bleve/analysis/analyzer/custom"
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"github.com/blevesearch/bleve/analysis/token/lowercase"
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"github.com/blevesearch/bleve/analysis/tokenizer/unicode"
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"github.com/ethantkoenig/rupture"
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)
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// issueIndexer (thread-safe) index for searching issues
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var issueIndexer bleve.Index
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const (
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issueIndexerAnalyzer = "issueIndexer"
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issueIndexerDocType = "issueIndexerDocType"
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issueIndexerLatestVersion = 1
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)
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// IssueIndexerData data stored in the issue indexer
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type IssueIndexerData struct {
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RepoID int64
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Title string
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Content string
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Comments []string
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}
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// Type returns the document type, for bleve's mapping.Classifier interface.
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func (i *IssueIndexerData) Type() string {
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return issueIndexerDocType
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}
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// IssueIndexerUpdate an update to the issue indexer
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type IssueIndexerUpdate struct {
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IssueID int64
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Data *IssueIndexerData
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}
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// AddToFlushingBatch adds the update to the given flushing batch.
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func (i IssueIndexerUpdate) AddToFlushingBatch(batch rupture.FlushingBatch) error {
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return batch.Index(indexerID(i.IssueID), i.Data)
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}
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// InitIssueIndexer initialize issue indexer
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func InitIssueIndexer(populateIndexer func() error) {
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var err error
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issueIndexer, err = openIndexer(setting.Indexer.IssuePath, issueIndexerLatestVersion)
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if err != nil {
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log.Fatal(4, "InitIssueIndexer: %v", err)
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}
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if issueIndexer != nil {
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return
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}
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if err = createIssueIndexer(); err != nil {
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log.Fatal(4, "InitIssuesIndexer: create index, %v", err)
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}
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if err = populateIndexer(); err != nil {
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log.Fatal(4, "InitIssueIndexer: populate index, %v", err)
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}
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}
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// createIssueIndexer create an issue indexer if one does not already exist
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func createIssueIndexer() error {
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mapping := bleve.NewIndexMapping()
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docMapping := bleve.NewDocumentMapping()
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numericFieldMapping := bleve.NewNumericFieldMapping()
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numericFieldMapping.IncludeInAll = false
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docMapping.AddFieldMappingsAt("RepoID", numericFieldMapping)
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textFieldMapping := bleve.NewTextFieldMapping()
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textFieldMapping.Store = false
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textFieldMapping.IncludeInAll = false
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docMapping.AddFieldMappingsAt("Title", textFieldMapping)
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docMapping.AddFieldMappingsAt("Content", textFieldMapping)
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docMapping.AddFieldMappingsAt("Comments", textFieldMapping)
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if err := addUnicodeNormalizeTokenFilter(mapping); err != nil {
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return err
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} else if err = mapping.AddCustomAnalyzer(issueIndexerAnalyzer, map[string]interface{}{
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"type": custom.Name,
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"char_filters": []string{},
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"tokenizer": unicode.Name,
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"token_filters": []string{unicodeNormalizeName, lowercase.Name},
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}); err != nil {
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return err
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}
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mapping.DefaultAnalyzer = issueIndexerAnalyzer
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mapping.AddDocumentMapping(issueIndexerDocType, docMapping)
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mapping.AddDocumentMapping("_all", bleve.NewDocumentDisabledMapping())
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var err error
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issueIndexer, err = bleve.New(setting.Indexer.IssuePath, mapping)
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return err
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}
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// IssueIndexerBatch batch to add updates to
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func IssueIndexerBatch() rupture.FlushingBatch {
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return rupture.NewFlushingBatch(issueIndexer, maxBatchSize)
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}
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// SearchIssuesByKeyword searches for issues by given conditions.
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// Returns the matching issue IDs
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func SearchIssuesByKeyword(repoID int64, keyword string) ([]int64, error) {
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indexerQuery := bleve.NewConjunctionQuery(
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numericEqualityQuery(repoID, "RepoID"),
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bleve.NewDisjunctionQuery(
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newMatchPhraseQuery(keyword, "Title", issueIndexerAnalyzer),
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newMatchPhraseQuery(keyword, "Content", issueIndexerAnalyzer),
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newMatchPhraseQuery(keyword, "Comments", issueIndexerAnalyzer),
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))
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search := bleve.NewSearchRequestOptions(indexerQuery, 2147483647, 0, false)
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result, err := issueIndexer.Search(search)
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if err != nil {
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return nil, err
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}
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issueIDs := make([]int64, len(result.Hits))
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for i, hit := range result.Hits {
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issueIDs[i], err = idOfIndexerID(hit.ID)
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if err != nil {
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return nil, err
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}
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}
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return issueIDs, nil
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}
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