mirror of
https://codeberg.org/forgejo/forgejo.git
synced 2024-09-08 00:03:28 +00:00
Result of running `perl -p -i -e 's#interface\{\}#any#g' **/*` and `make fmt`.
Basically the same [as golang did](2580d0e08d
).
358 lines
11 KiB
Go
358 lines
11 KiB
Go
// Copyright 2020 The Gitea Authors. All rights reserved.
|
|
// SPDX-License-Identifier: MIT
|
|
|
|
package elasticsearch
|
|
|
|
import (
|
|
"bufio"
|
|
"context"
|
|
"fmt"
|
|
"io"
|
|
"strconv"
|
|
"strings"
|
|
|
|
repo_model "code.gitea.io/gitea/models/repo"
|
|
"code.gitea.io/gitea/modules/analyze"
|
|
"code.gitea.io/gitea/modules/charset"
|
|
"code.gitea.io/gitea/modules/git"
|
|
"code.gitea.io/gitea/modules/indexer/code/internal"
|
|
indexer_internal "code.gitea.io/gitea/modules/indexer/internal"
|
|
inner_elasticsearch "code.gitea.io/gitea/modules/indexer/internal/elasticsearch"
|
|
"code.gitea.io/gitea/modules/json"
|
|
"code.gitea.io/gitea/modules/log"
|
|
"code.gitea.io/gitea/modules/setting"
|
|
"code.gitea.io/gitea/modules/timeutil"
|
|
"code.gitea.io/gitea/modules/typesniffer"
|
|
|
|
"github.com/go-enry/go-enry/v2"
|
|
"github.com/olivere/elastic/v7"
|
|
)
|
|
|
|
const (
|
|
esRepoIndexerLatestVersion = 1
|
|
// multi-match-types, currently only 2 types are used
|
|
// Reference: https://www.elastic.co/guide/en/elasticsearch/reference/7.0/query-dsl-multi-match-query.html#multi-match-types
|
|
esMultiMatchTypeBestFields = "best_fields"
|
|
esMultiMatchTypePhrasePrefix = "phrase_prefix"
|
|
)
|
|
|
|
var _ internal.Indexer = &Indexer{}
|
|
|
|
// Indexer implements Indexer interface
|
|
type Indexer struct {
|
|
inner *inner_elasticsearch.Indexer
|
|
indexer_internal.Indexer // do not composite inner_elasticsearch.Indexer directly to avoid exposing too much
|
|
}
|
|
|
|
// NewIndexer creates a new elasticsearch indexer
|
|
func NewIndexer(url, indexerName string) *Indexer {
|
|
inner := inner_elasticsearch.NewIndexer(url, indexerName, esRepoIndexerLatestVersion, defaultMapping)
|
|
indexer := &Indexer{
|
|
inner: inner,
|
|
Indexer: inner,
|
|
}
|
|
return indexer
|
|
}
|
|
|
|
const (
|
|
defaultMapping = `{
|
|
"mappings": {
|
|
"properties": {
|
|
"repo_id": {
|
|
"type": "long",
|
|
"index": true
|
|
},
|
|
"content": {
|
|
"type": "text",
|
|
"term_vector": "with_positions_offsets",
|
|
"index": true
|
|
},
|
|
"commit_id": {
|
|
"type": "keyword",
|
|
"index": true
|
|
},
|
|
"language": {
|
|
"type": "keyword",
|
|
"index": true
|
|
},
|
|
"updated_at": {
|
|
"type": "long",
|
|
"index": true
|
|
}
|
|
}
|
|
}
|
|
}`
|
|
)
|
|
|
|
func (b *Indexer) addUpdate(ctx context.Context, batchWriter git.WriteCloserError, batchReader *bufio.Reader, sha string, update internal.FileUpdate, repo *repo_model.Repository) ([]elastic.BulkableRequest, error) {
|
|
// Ignore vendored files in code search
|
|
if setting.Indexer.ExcludeVendored && analyze.IsVendor(update.Filename) {
|
|
return nil, nil
|
|
}
|
|
|
|
size := update.Size
|
|
var err error
|
|
if !update.Sized {
|
|
var stdout string
|
|
stdout, _, err = git.NewCommand(ctx, "cat-file", "-s").AddDynamicArguments(update.BlobSha).RunStdString(&git.RunOpts{Dir: repo.RepoPath()})
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
if size, err = strconv.ParseInt(strings.TrimSpace(stdout), 10, 64); err != nil {
|
|
return nil, fmt.Errorf("misformatted git cat-file output: %w", err)
|
|
}
|
|
}
|
|
|
|
if size > setting.Indexer.MaxIndexerFileSize {
|
|
return []elastic.BulkableRequest{b.addDelete(update.Filename, repo)}, nil
|
|
}
|
|
|
|
if _, err := batchWriter.Write([]byte(update.BlobSha + "\n")); err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
_, _, size, err = git.ReadBatchLine(batchReader)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
fileContents, err := io.ReadAll(io.LimitReader(batchReader, size))
|
|
if err != nil {
|
|
return nil, err
|
|
} else if !typesniffer.DetectContentType(fileContents).IsText() {
|
|
// FIXME: UTF-16 files will probably fail here
|
|
return nil, nil
|
|
}
|
|
|
|
if _, err = batchReader.Discard(1); err != nil {
|
|
return nil, err
|
|
}
|
|
id := internal.FilenameIndexerID(repo.ID, update.Filename)
|
|
|
|
return []elastic.BulkableRequest{
|
|
elastic.NewBulkIndexRequest().
|
|
Index(b.inner.VersionedIndexName()).
|
|
Id(id).
|
|
Doc(map[string]any{
|
|
"repo_id": repo.ID,
|
|
"content": string(charset.ToUTF8DropErrors(fileContents)),
|
|
"commit_id": sha,
|
|
"language": analyze.GetCodeLanguage(update.Filename, fileContents),
|
|
"updated_at": timeutil.TimeStampNow(),
|
|
}),
|
|
}, nil
|
|
}
|
|
|
|
func (b *Indexer) addDelete(filename string, repo *repo_model.Repository) elastic.BulkableRequest {
|
|
id := internal.FilenameIndexerID(repo.ID, filename)
|
|
return elastic.NewBulkDeleteRequest().
|
|
Index(b.inner.VersionedIndexName()).
|
|
Id(id)
|
|
}
|
|
|
|
// Index will save the index data
|
|
func (b *Indexer) Index(ctx context.Context, repo *repo_model.Repository, sha string, changes *internal.RepoChanges) error {
|
|
reqs := make([]elastic.BulkableRequest, 0)
|
|
if len(changes.Updates) > 0 {
|
|
// Now because of some insanity with git cat-file not immediately failing if not run in a valid git directory we need to run git rev-parse first!
|
|
if err := git.EnsureValidGitRepository(ctx, repo.RepoPath()); err != nil {
|
|
log.Error("Unable to open git repo: %s for %-v: %v", repo.RepoPath(), repo, err)
|
|
return err
|
|
}
|
|
|
|
batchWriter, batchReader, cancel := git.CatFileBatch(ctx, repo.RepoPath())
|
|
defer cancel()
|
|
|
|
for _, update := range changes.Updates {
|
|
updateReqs, err := b.addUpdate(ctx, batchWriter, batchReader, sha, update, repo)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if len(updateReqs) > 0 {
|
|
reqs = append(reqs, updateReqs...)
|
|
}
|
|
}
|
|
cancel()
|
|
}
|
|
|
|
for _, filename := range changes.RemovedFilenames {
|
|
reqs = append(reqs, b.addDelete(filename, repo))
|
|
}
|
|
|
|
if len(reqs) > 0 {
|
|
_, err := b.inner.Client.Bulk().
|
|
Index(b.inner.VersionedIndexName()).
|
|
Add(reqs...).
|
|
Do(ctx)
|
|
return err
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// Delete deletes indexes by ids
|
|
func (b *Indexer) Delete(ctx context.Context, repoID int64) error {
|
|
_, err := b.inner.Client.DeleteByQuery(b.inner.VersionedIndexName()).
|
|
Query(elastic.NewTermsQuery("repo_id", repoID)).
|
|
Do(ctx)
|
|
return err
|
|
}
|
|
|
|
// indexPos find words positions for start and the following end on content. It will
|
|
// return the beginning position of the first start and the ending position of the
|
|
// first end following the start string.
|
|
// If not found any of the positions, it will return -1, -1.
|
|
func indexPos(content, start, end string) (int, int) {
|
|
startIdx := strings.Index(content, start)
|
|
if startIdx < 0 {
|
|
return -1, -1
|
|
}
|
|
endIdx := strings.Index(content[startIdx+len(start):], end)
|
|
if endIdx < 0 {
|
|
return -1, -1
|
|
}
|
|
return startIdx, startIdx + len(start) + endIdx + len(end)
|
|
}
|
|
|
|
func convertResult(searchResult *elastic.SearchResult, kw string, pageSize int) (int64, []*internal.SearchResult, []*internal.SearchResultLanguages, error) {
|
|
hits := make([]*internal.SearchResult, 0, pageSize)
|
|
for _, hit := range searchResult.Hits.Hits {
|
|
// FIXME: There is no way to get the position the keyword on the content currently on the same request.
|
|
// So we get it from content, this may made the query slower. See
|
|
// https://discuss.elastic.co/t/fetching-position-of-keyword-in-matched-document/94291
|
|
var startIndex, endIndex int
|
|
c, ok := hit.Highlight["content"]
|
|
if ok && len(c) > 0 {
|
|
// FIXME: Since the highlighting content will include <em> and </em> for the keywords,
|
|
// now we should find the positions. But how to avoid html content which contains the
|
|
// <em> and </em> tags? If elastic search has handled that?
|
|
startIndex, endIndex = indexPos(c[0], "<em>", "</em>")
|
|
if startIndex == -1 {
|
|
panic(fmt.Sprintf("1===%s,,,%#v,,,%s", kw, hit.Highlight, c[0]))
|
|
}
|
|
} else {
|
|
panic(fmt.Sprintf("2===%#v", hit.Highlight))
|
|
}
|
|
|
|
repoID, fileName := internal.ParseIndexerID(hit.Id)
|
|
res := make(map[string]any)
|
|
if err := json.Unmarshal(hit.Source, &res); err != nil {
|
|
return 0, nil, nil, err
|
|
}
|
|
|
|
language := res["language"].(string)
|
|
|
|
hits = append(hits, &internal.SearchResult{
|
|
RepoID: repoID,
|
|
Filename: fileName,
|
|
CommitID: res["commit_id"].(string),
|
|
Content: res["content"].(string),
|
|
UpdatedUnix: timeutil.TimeStamp(res["updated_at"].(float64)),
|
|
Language: language,
|
|
StartIndex: startIndex,
|
|
EndIndex: endIndex - 9, // remove the length <em></em> since we give Content the original data
|
|
Color: enry.GetColor(language),
|
|
})
|
|
}
|
|
|
|
return searchResult.TotalHits(), hits, extractAggs(searchResult), nil
|
|
}
|
|
|
|
func extractAggs(searchResult *elastic.SearchResult) []*internal.SearchResultLanguages {
|
|
var searchResultLanguages []*internal.SearchResultLanguages
|
|
agg, found := searchResult.Aggregations.Terms("language")
|
|
if found {
|
|
searchResultLanguages = make([]*internal.SearchResultLanguages, 0, 10)
|
|
|
|
for _, bucket := range agg.Buckets {
|
|
searchResultLanguages = append(searchResultLanguages, &internal.SearchResultLanguages{
|
|
Language: bucket.Key.(string),
|
|
Color: enry.GetColor(bucket.Key.(string)),
|
|
Count: int(bucket.DocCount),
|
|
})
|
|
}
|
|
}
|
|
return searchResultLanguages
|
|
}
|
|
|
|
// Search searches for codes and language stats by given conditions.
|
|
func (b *Indexer) Search(ctx context.Context, repoIDs []int64, language, keyword string, page, pageSize int, isMatch bool) (int64, []*internal.SearchResult, []*internal.SearchResultLanguages, error) {
|
|
searchType := esMultiMatchTypeBestFields
|
|
if isMatch {
|
|
searchType = esMultiMatchTypePhrasePrefix
|
|
}
|
|
|
|
kwQuery := elastic.NewMultiMatchQuery(keyword, "content").Type(searchType)
|
|
query := elastic.NewBoolQuery()
|
|
query = query.Must(kwQuery)
|
|
if len(repoIDs) > 0 {
|
|
repoStrs := make([]any, 0, len(repoIDs))
|
|
for _, repoID := range repoIDs {
|
|
repoStrs = append(repoStrs, repoID)
|
|
}
|
|
repoQuery := elastic.NewTermsQuery("repo_id", repoStrs...)
|
|
query = query.Must(repoQuery)
|
|
}
|
|
|
|
var (
|
|
start int
|
|
kw = "<em>" + keyword + "</em>"
|
|
aggregation = elastic.NewTermsAggregation().Field("language").Size(10).OrderByCountDesc()
|
|
)
|
|
|
|
if page > 0 {
|
|
start = (page - 1) * pageSize
|
|
}
|
|
|
|
if len(language) == 0 {
|
|
searchResult, err := b.inner.Client.Search().
|
|
Index(b.inner.VersionedIndexName()).
|
|
Aggregation("language", aggregation).
|
|
Query(query).
|
|
Highlight(
|
|
elastic.NewHighlight().
|
|
Field("content").
|
|
NumOfFragments(0). // return all highting content on fragments
|
|
HighlighterType("fvh"),
|
|
).
|
|
Sort("repo_id", true).
|
|
From(start).Size(pageSize).
|
|
Do(ctx)
|
|
if err != nil {
|
|
return 0, nil, nil, err
|
|
}
|
|
|
|
return convertResult(searchResult, kw, pageSize)
|
|
}
|
|
|
|
langQuery := elastic.NewMatchQuery("language", language)
|
|
countResult, err := b.inner.Client.Search().
|
|
Index(b.inner.VersionedIndexName()).
|
|
Aggregation("language", aggregation).
|
|
Query(query).
|
|
Size(0). // We only need stats information
|
|
Do(ctx)
|
|
if err != nil {
|
|
return 0, nil, nil, err
|
|
}
|
|
|
|
query = query.Must(langQuery)
|
|
searchResult, err := b.inner.Client.Search().
|
|
Index(b.inner.VersionedIndexName()).
|
|
Query(query).
|
|
Highlight(
|
|
elastic.NewHighlight().
|
|
Field("content").
|
|
NumOfFragments(0). // return all highting content on fragments
|
|
HighlighterType("fvh"),
|
|
).
|
|
Sort("repo_id", true).
|
|
From(start).Size(pageSize).
|
|
Do(ctx)
|
|
if err != nil {
|
|
return 0, nil, nil, err
|
|
}
|
|
|
|
total, hits, _, err := convertResult(searchResult, kw, pageSize)
|
|
|
|
return total, hits, extractAggs(countResult), err
|
|
}
|