mirror of
https://github.com/go-gitea/gitea
synced 2024-11-09 11:44:27 +00:00
299 lines
10 KiB
Go
299 lines
10 KiB
Go
// Copyright 2018 The Gitea Authors. All rights reserved.
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// SPDX-License-Identifier: MIT
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package bleve
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import (
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"context"
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indexer_internal "code.gitea.io/gitea/modules/indexer/internal"
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inner_bleve "code.gitea.io/gitea/modules/indexer/internal/bleve"
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"code.gitea.io/gitea/modules/indexer/issues/internal"
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"github.com/blevesearch/bleve/v2"
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"github.com/blevesearch/bleve/v2/analysis/analyzer/custom"
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"github.com/blevesearch/bleve/v2/analysis/token/camelcase"
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"github.com/blevesearch/bleve/v2/analysis/token/lowercase"
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"github.com/blevesearch/bleve/v2/analysis/token/unicodenorm"
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"github.com/blevesearch/bleve/v2/analysis/tokenizer/unicode"
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"github.com/blevesearch/bleve/v2/mapping"
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"github.com/blevesearch/bleve/v2/search/query"
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)
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const (
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issueIndexerAnalyzer = "issueIndexer"
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issueIndexerDocType = "issueIndexerDocType"
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issueIndexerLatestVersion = 4
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)
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const unicodeNormalizeName = "unicodeNormalize"
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func addUnicodeNormalizeTokenFilter(m *mapping.IndexMappingImpl) error {
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return m.AddCustomTokenFilter(unicodeNormalizeName, map[string]any{
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"type": unicodenorm.Name,
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"form": unicodenorm.NFC,
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})
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}
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const (
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maxBatchSize = 16
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// fuzzyDenominator determines the levenshtein distance per each character of a keyword
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fuzzyDenominator = 4
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)
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// IndexerData an update to the issue indexer
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type IndexerData internal.IndexerData
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// Type returns the document type, for bleve's mapping.Classifier interface.
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func (i *IndexerData) Type() string {
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return issueIndexerDocType
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}
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// generateIssueIndexMapping generates the bleve index mapping for issues
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func generateIssueIndexMapping() (mapping.IndexMapping, 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.Store = false
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numericFieldMapping.IncludeInAll = false
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docMapping.AddFieldMappingsAt("repo_id", 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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boolFieldMapping := bleve.NewBooleanFieldMapping()
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boolFieldMapping.Store = false
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boolFieldMapping.IncludeInAll = false
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numberFieldMapping := bleve.NewNumericFieldMapping()
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numberFieldMapping.Store = false
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numberFieldMapping.IncludeInAll = false
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docMapping.AddFieldMappingsAt("is_public", boolFieldMapping)
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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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docMapping.AddFieldMappingsAt("is_pull", boolFieldMapping)
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docMapping.AddFieldMappingsAt("is_closed", boolFieldMapping)
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docMapping.AddFieldMappingsAt("label_ids", numberFieldMapping)
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docMapping.AddFieldMappingsAt("no_label", boolFieldMapping)
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docMapping.AddFieldMappingsAt("milestone_id", numberFieldMapping)
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docMapping.AddFieldMappingsAt("project_id", numberFieldMapping)
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docMapping.AddFieldMappingsAt("project_board_id", numberFieldMapping)
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docMapping.AddFieldMappingsAt("poster_id", numberFieldMapping)
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docMapping.AddFieldMappingsAt("assignee_id", numberFieldMapping)
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docMapping.AddFieldMappingsAt("mention_ids", numberFieldMapping)
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docMapping.AddFieldMappingsAt("reviewed_ids", numberFieldMapping)
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docMapping.AddFieldMappingsAt("review_requested_ids", numberFieldMapping)
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docMapping.AddFieldMappingsAt("subscriber_ids", numberFieldMapping)
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docMapping.AddFieldMappingsAt("updated_unix", numberFieldMapping)
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docMapping.AddFieldMappingsAt("created_unix", numberFieldMapping)
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docMapping.AddFieldMappingsAt("deadline_unix", numberFieldMapping)
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docMapping.AddFieldMappingsAt("comment_count", numberFieldMapping)
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if err := addUnicodeNormalizeTokenFilter(mapping); err != nil {
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return nil, err
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} else if err = mapping.AddCustomAnalyzer(issueIndexerAnalyzer, map[string]any{
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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, camelcase.Name, lowercase.Name},
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}); err != nil {
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return nil, 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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mapping.DefaultMapping = bleve.NewDocumentDisabledMapping() // disable default mapping, avoid indexing unexpected structs
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return mapping, nil
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}
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var _ internal.Indexer = &Indexer{}
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// Indexer implements Indexer interface
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type Indexer struct {
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inner *inner_bleve.Indexer
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indexer_internal.Indexer // do not composite inner_bleve.Indexer directly to avoid exposing too much
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}
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// NewIndexer creates a new bleve local indexer
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func NewIndexer(indexDir string) *Indexer {
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inner := inner_bleve.NewIndexer(indexDir, issueIndexerLatestVersion, generateIssueIndexMapping)
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return &Indexer{
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Indexer: inner,
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inner: inner,
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}
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}
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// Index will save the index data
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func (b *Indexer) Index(_ context.Context, issues ...*internal.IndexerData) error {
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batch := inner_bleve.NewFlushingBatch(b.inner.Indexer, maxBatchSize)
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for _, issue := range issues {
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if err := batch.Index(indexer_internal.Base36(issue.ID), (*IndexerData)(issue)); err != nil {
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return err
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}
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}
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return batch.Flush()
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}
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// Delete deletes indexes by ids
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func (b *Indexer) Delete(_ context.Context, ids ...int64) error {
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batch := inner_bleve.NewFlushingBatch(b.inner.Indexer, maxBatchSize)
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for _, id := range ids {
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if err := batch.Delete(indexer_internal.Base36(id)); err != nil {
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return err
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}
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}
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return batch.Flush()
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}
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// Search searches for issues by given conditions.
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// Returns the matching issue IDs
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func (b *Indexer) Search(ctx context.Context, options *internal.SearchOptions) (*internal.SearchResult, error) {
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var queries []query.Query
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if options.Keyword != "" {
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fuzziness := 0
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if options.IsFuzzyKeyword {
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fuzziness = len(options.Keyword) / fuzzyDenominator
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}
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queries = append(queries, bleve.NewDisjunctionQuery([]query.Query{
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inner_bleve.MatchPhraseQuery(options.Keyword, "title", issueIndexerAnalyzer, fuzziness),
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inner_bleve.MatchPhraseQuery(options.Keyword, "content", issueIndexerAnalyzer, fuzziness),
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inner_bleve.MatchPhraseQuery(options.Keyword, "comments", issueIndexerAnalyzer, fuzziness),
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}...))
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}
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if len(options.RepoIDs) > 0 || options.AllPublic {
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var repoQueries []query.Query
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for _, repoID := range options.RepoIDs {
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repoQueries = append(repoQueries, inner_bleve.NumericEqualityQuery(repoID, "repo_id"))
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}
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if options.AllPublic {
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repoQueries = append(repoQueries, inner_bleve.BoolFieldQuery(true, "is_public"))
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}
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queries = append(queries, bleve.NewDisjunctionQuery(repoQueries...))
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}
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if options.IsPull.Has() {
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queries = append(queries, inner_bleve.BoolFieldQuery(options.IsPull.Value(), "is_pull"))
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}
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if options.IsClosed.Has() {
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queries = append(queries, inner_bleve.BoolFieldQuery(options.IsClosed.Value(), "is_closed"))
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}
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if options.NoLabelOnly {
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queries = append(queries, inner_bleve.BoolFieldQuery(true, "no_label"))
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} else {
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if len(options.IncludedLabelIDs) > 0 {
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var includeQueries []query.Query
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for _, labelID := range options.IncludedLabelIDs {
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includeQueries = append(includeQueries, inner_bleve.NumericEqualityQuery(labelID, "label_ids"))
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}
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queries = append(queries, bleve.NewConjunctionQuery(includeQueries...))
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} else if len(options.IncludedAnyLabelIDs) > 0 {
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var includeQueries []query.Query
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for _, labelID := range options.IncludedAnyLabelIDs {
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includeQueries = append(includeQueries, inner_bleve.NumericEqualityQuery(labelID, "label_ids"))
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}
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queries = append(queries, bleve.NewDisjunctionQuery(includeQueries...))
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}
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if len(options.ExcludedLabelIDs) > 0 {
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var excludeQueries []query.Query
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for _, labelID := range options.ExcludedLabelIDs {
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q := bleve.NewBooleanQuery()
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q.AddMustNot(inner_bleve.NumericEqualityQuery(labelID, "label_ids"))
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excludeQueries = append(excludeQueries, q)
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}
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queries = append(queries, bleve.NewConjunctionQuery(excludeQueries...))
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}
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}
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if len(options.MilestoneIDs) > 0 {
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var milestoneQueries []query.Query
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for _, milestoneID := range options.MilestoneIDs {
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milestoneQueries = append(milestoneQueries, inner_bleve.NumericEqualityQuery(milestoneID, "milestone_id"))
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}
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queries = append(queries, bleve.NewDisjunctionQuery(milestoneQueries...))
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}
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if options.ProjectID.Has() {
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queries = append(queries, inner_bleve.NumericEqualityQuery(options.ProjectID.Value(), "project_id"))
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}
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if options.ProjectBoardID.Has() {
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queries = append(queries, inner_bleve.NumericEqualityQuery(options.ProjectBoardID.Value(), "project_board_id"))
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}
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if options.PosterID.Has() {
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queries = append(queries, inner_bleve.NumericEqualityQuery(options.PosterID.Value(), "poster_id"))
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}
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if options.AssigneeID.Has() {
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queries = append(queries, inner_bleve.NumericEqualityQuery(options.AssigneeID.Value(), "assignee_id"))
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}
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if options.MentionID.Has() {
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queries = append(queries, inner_bleve.NumericEqualityQuery(options.MentionID.Value(), "mention_ids"))
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}
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if options.ReviewedID.Has() {
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queries = append(queries, inner_bleve.NumericEqualityQuery(options.ReviewedID.Value(), "reviewed_ids"))
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}
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if options.ReviewRequestedID.Has() {
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queries = append(queries, inner_bleve.NumericEqualityQuery(options.ReviewRequestedID.Value(), "review_requested_ids"))
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}
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if options.SubscriberID.Has() {
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queries = append(queries, inner_bleve.NumericEqualityQuery(options.SubscriberID.Value(), "subscriber_ids"))
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}
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if options.UpdatedAfterUnix.Has() || options.UpdatedBeforeUnix.Has() {
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queries = append(queries, inner_bleve.NumericRangeInclusiveQuery(
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options.UpdatedAfterUnix,
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options.UpdatedBeforeUnix,
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"updated_unix"))
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}
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var indexerQuery query.Query = bleve.NewConjunctionQuery(queries...)
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if len(queries) == 0 {
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indexerQuery = bleve.NewMatchAllQuery()
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}
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skip, limit := indexer_internal.ParsePaginator(options.Paginator)
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search := bleve.NewSearchRequestOptions(indexerQuery, limit, skip, false)
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if options.SortBy == "" {
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options.SortBy = internal.SortByCreatedAsc
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}
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search.SortBy([]string{string(options.SortBy), "-_id"})
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result, err := b.inner.Indexer.SearchInContext(ctx, search)
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if err != nil {
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return nil, err
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}
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ret := &internal.SearchResult{
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Total: int64(result.Total),
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Hits: make([]internal.Match, 0, len(result.Hits)),
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}
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for _, hit := range result.Hits {
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id, err := indexer_internal.ParseBase36(hit.ID)
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if err != nil {
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return nil, err
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}
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ret.Hits = append(ret.Hits, internal.Match{
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ID: id,
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})
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}
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return ret, nil
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}
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