Support elastic search for code search (#10273)

* Support elastic search for code search

* Finished elastic search implementation and add some tests

* Enable test on drone and added docs

* Add new fields to elastic search

* Fix bug

* remove unused changes

* Use indexer alias to keep the gitea indexer version

* Improve codes

* Some code improvements

* The real indexer name changed to xxx.v1

Co-authored-by: zeripath <art27@cantab.net>
tokarchuk/v1.17
Lunny Xiao 4 years ago committed by GitHub
parent d257485bc0
commit 9bc69ff26e
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
  1. 1
      .drone.yml
  2. 8
      custom/conf/app.example.ini
  3. 4
      docs/content/doc/advanced/config-cheat-sheet.en-us.md
  4. 6
      docs/content/doc/advanced/config-cheat-sheet.zh-cn.md
  5. 132
      modules/indexer/code/bleve.go
  6. 53
      modules/indexer/code/bleve_test.go
  7. 385
      modules/indexer/code/elastic_search.go
  8. 36
      modules/indexer/code/elastic_search_test.go
  9. 90
      modules/indexer/code/indexer.go
  10. 83
      modules/indexer/code/indexer_test.go
  11. 30
      modules/indexer/code/queue.go
  12. 6
      modules/indexer/code/wrapped.go
  13. 12
      modules/setting/indexer.go
  14. 12
      templates/explore/code.tmpl

@ -209,6 +209,7 @@ steps:
TAGS: bindata
TEST_LDAP: 1
USE_REPO_TEST_DIR: 1
TEST_INDEXER_CODE_ES_URL: "http://elastic:changeme@elasticsearch:9200"
depends_on:
- build

@ -428,7 +428,15 @@ STARTUP_TIMEOUT=30s
; repo indexer by default disabled, since it uses a lot of disk space
REPO_INDEXER_ENABLED = false
; Code search engine type, could be `bleve` or `elasticsearch`.
REPO_INDEXER_TYPE = bleve
; Index file used for code search.
REPO_INDEXER_PATH = indexers/repos.bleve
; Code indexer connection string, available when `REPO_INDEXER_TYPE` is elasticsearch. i.e. http://elastic:changeme@localhost:9200
REPO_INDEXER_CONN_STR =
; Code indexer name, available when `REPO_INDEXER_TYPE` is elasticsearch
REPO_INDEXER_NAME = gitea_codes
UPDATE_BUFFER_LEN = 20
MAX_FILE_SIZE = 1048576
; A comma separated list of glob patterns (see https://github.com/gobwas/glob) to include

@ -270,7 +270,11 @@ relation to port exhaustion.
- `ISSUE_INDEXER_QUEUE_BATCH_NUMBER`: **20**: Batch queue number.
- `REPO_INDEXER_ENABLED`: **false**: Enables code search (uses a lot of disk space, about 6 times more than the repository size).
- `REPO_INDEXER_TYPE`: **bleve**: Code search engine type, could be `bleve` or `elasticsearch`.
- `REPO_INDEXER_PATH`: **indexers/repos.bleve**: Index file used for code search.
- `REPO_INDEXER_CONN_STR`: ****: Code indexer connection string, available when `REPO_INDEXER_TYPE` is elasticsearch. i.e. http://elastic:changeme@localhost:9200
- `REPO_INDEXER_NAME`: **gitea_codes**: Code indexer name, available when `REPO_INDEXER_TYPE` is elasticsearch
- `REPO_INDEXER_INCLUDE`: **empty**: A comma separated list of glob patterns (see https://github.com/gobwas/glob) to **include** in the index. Use `**.txt` to match any files with .txt extension. An empty list means include all files.
- `REPO_INDEXER_EXCLUDE`: **empty**: A comma separated list of glob patterns (see https://github.com/gobwas/glob) to **exclude** from the index. Files that match this list will not be indexed, even if they match in `REPO_INDEXER_INCLUDE`.
- `REPO_INDEXER_EXCLUDE_VENDORED`: **true**: Exclude vendored files from index.

@ -98,8 +98,12 @@ menu:
- `ISSUE_INDEXER_QUEUE_CONN_STR`: **addrs=127.0.0.1:6379 db=0**: 当 `ISSUE_INDEXER_QUEUE_TYPE``redis` 时,保存Redis队列的连接字符串。
- `ISSUE_INDEXER_QUEUE_BATCH_NUMBER`: **20**: 队列处理中批量提交数量。
- `REPO_INDEXER_ENABLED`: **false**: 是否启用代码搜索(启用后会占用比较大的磁盘空间)。
- `REPO_INDEXER_ENABLED`: **false**: 是否启用代码搜索(启用后会占用比较大的磁盘空间,如果是bleve可能需要占用约6倍存储空间)。
- `REPO_INDEXER_TYPE`: **bleve**: 代码搜索引擎类型,可以为 `bleve` 或者 `elasticsearch`
- `REPO_INDEXER_PATH`: **indexers/repos.bleve**: 用于代码搜索的索引文件路径。
- `REPO_INDEXER_CONN_STR`: ****: 代码搜索引擎连接字符串,当 `REPO_INDEXER_TYPE``elasticsearch` 时有效。例如: http://elastic:changeme@localhost:9200
- `REPO_INDEXER_NAME`: **gitea_codes**: 代码搜索引擎的名字,当 `REPO_INDEXER_TYPE``elasticsearch` 时有效。
- `UPDATE_BUFFER_LEN`: **20**: 代码索引请求的缓冲区长度。
- `MAX_FILE_SIZE`: **1048576**: 进行解析的源代码文件的最大长度,小于该值时才会索引。

@ -58,10 +58,10 @@ func addUnicodeNormalizeTokenFilter(m *mapping.IndexMappingImpl) error {
})
}
// openIndexer open the index at the specified path, checking for metadata
// openBleveIndexer open the index at the specified path, checking for metadata
// updates and bleve version updates. If index needs to be created (or
// re-created), returns (nil, nil)
func openIndexer(path string, latestVersion int) (bleve.Index, error) {
func openBleveIndexer(path string, latestVersion int) (bleve.Index, error) {
_, err := os.Stat(path)
if err != nil && os.IsNotExist(err) {
return nil, nil
@ -104,54 +104,14 @@ func (d *RepoIndexerData) Type() string {
return repoIndexerDocType
}
func addUpdate(commitSha string, update fileUpdate, repo *models.Repository, batch rupture.FlushingBatch) error {
// Ignore vendored files in code search
if setting.Indexer.ExcludeVendored && enry.IsVendor(update.Filename) {
return nil
}
stdout, err := git.NewCommand("cat-file", "-s", update.BlobSha).
RunInDir(repo.RepoPath())
if err != nil {
return err
}
if size, err := strconv.Atoi(strings.TrimSpace(stdout)); err != nil {
return fmt.Errorf("Misformatted git cat-file output: %v", err)
} else if int64(size) > setting.Indexer.MaxIndexerFileSize {
return addDelete(update.Filename, repo, batch)
}
fileContents, err := git.NewCommand("cat-file", "blob", update.BlobSha).
RunInDirBytes(repo.RepoPath())
if err != nil {
return err
} else if !base.IsTextFile(fileContents) {
// FIXME: UTF-16 files will probably fail here
return nil
}
id := filenameIndexerID(repo.ID, update.Filename)
return batch.Index(id, &RepoIndexerData{
RepoID: repo.ID,
CommitID: commitSha,
Content: string(charset.ToUTF8DropErrors(fileContents)),
Language: analyze.GetCodeLanguage(update.Filename, fileContents),
UpdatedAt: time.Now().UTC(),
})
}
func addDelete(filename string, repo *models.Repository, batch rupture.FlushingBatch) error {
id := filenameIndexerID(repo.ID, filename)
return batch.Delete(id)
}
const (
repoIndexerAnalyzer = "repoIndexerAnalyzer"
repoIndexerDocType = "repoIndexerDocType"
repoIndexerLatestVersion = 5
)
// createRepoIndexer create a repo indexer if one does not already exist
func createRepoIndexer(path string, latestVersion int) (bleve.Index, error) {
// createBleveIndexer create a bleve repo indexer if one does not already exist
func createBleveIndexer(path string, latestVersion int) (bleve.Index, error) {
docMapping := bleve.NewDocumentMapping()
numericFieldMapping := bleve.NewNumericFieldMapping()
numericFieldMapping.IncludeInAll = false
@ -199,18 +159,6 @@ func createRepoIndexer(path string, latestVersion int) (bleve.Index, error) {
return indexer, nil
}
func filenameIndexerID(repoID int64, filename string) string {
return indexerID(repoID) + "_" + filename
}
func filenameOfIndexerID(indexerID string) string {
index := strings.IndexByte(indexerID, '_')
if index == -1 {
log.Error("Unexpected ID in repo indexer: %s", indexerID)
}
return indexerID[index+1:]
}
var (
_ Indexer = &BleveIndexer{}
)
@ -230,10 +178,51 @@ func NewBleveIndexer(indexDir string) (*BleveIndexer, bool, error) {
return indexer, created, err
}
func (b *BleveIndexer) addUpdate(commitSha string, update fileUpdate, repo *models.Repository, batch rupture.FlushingBatch) error {
// Ignore vendored files in code search
if setting.Indexer.ExcludeVendored && enry.IsVendor(update.Filename) {
return nil
}
stdout, err := git.NewCommand("cat-file", "-s", update.BlobSha).
RunInDir(repo.RepoPath())
if err != nil {
return err
}
if size, err := strconv.Atoi(strings.TrimSpace(stdout)); err != nil {
return fmt.Errorf("Misformatted git cat-file output: %v", err)
} else if int64(size) > setting.Indexer.MaxIndexerFileSize {
return b.addDelete(update.Filename, repo, batch)
}
fileContents, err := git.NewCommand("cat-file", "blob", update.BlobSha).
RunInDirBytes(repo.RepoPath())
if err != nil {
return err
} else if !base.IsTextFile(fileContents) {
// FIXME: UTF-16 files will probably fail here
return nil
}
id := filenameIndexerID(repo.ID, update.Filename)
return batch.Index(id, &RepoIndexerData{
RepoID: repo.ID,
CommitID: commitSha,
Content: string(charset.ToUTF8DropErrors(fileContents)),
Language: analyze.GetCodeLanguage(update.Filename, fileContents),
UpdatedAt: time.Now().UTC(),
})
}
func (b *BleveIndexer) addDelete(filename string, repo *models.Repository, batch rupture.FlushingBatch) error {
id := filenameIndexerID(repo.ID, filename)
return batch.Delete(id)
}
// init init the indexer
func (b *BleveIndexer) init() (bool, error) {
var err error
b.indexer, err = openIndexer(b.indexDir, repoIndexerLatestVersion)
b.indexer, err = openBleveIndexer(b.indexDir, repoIndexerLatestVersion)
if err != nil {
return false, err
}
@ -241,7 +230,7 @@ func (b *BleveIndexer) init() (bool, error) {
return false, nil
}
b.indexer, err = createRepoIndexer(b.indexDir, repoIndexerLatestVersion)
b.indexer, err = createBleveIndexer(b.indexDir, repoIndexerLatestVersion)
if err != nil {
return false, err
}
@ -262,38 +251,19 @@ func (b *BleveIndexer) Close() {
}
// Index indexes the data
func (b *BleveIndexer) Index(repoID int64) error {
repo, err := models.GetRepositoryByID(repoID)
if err != nil {
return err
}
sha, err := getDefaultBranchSha(repo)
if err != nil {
return err
}
changes, err := getRepoChanges(repo, sha)
if err != nil {
return err
} else if changes == nil {
return nil
}
func (b *BleveIndexer) Index(repo *models.Repository, sha string, changes *repoChanges) error {
batch := rupture.NewFlushingBatch(b.indexer, maxBatchSize)
for _, update := range changes.Updates {
if err := addUpdate(sha, update, repo, batch); err != nil {
if err := b.addUpdate(sha, update, repo, batch); err != nil {
return err
}
}
for _, filename := range changes.RemovedFilenames {
if err := addDelete(filename, repo, batch); err != nil {
if err := b.addDelete(filename, repo, batch); err != nil {
return err
}
}
if err = batch.Flush(); err != nil {
return err
}
return repo.UpdateIndexerStatus(models.RepoIndexerTypeCode, sha)
return batch.Flush()
}
// Delete deletes indexes by ids

@ -6,21 +6,15 @@ package code
import (
"io/ioutil"
"path/filepath"
"testing"
"code.gitea.io/gitea/models"
"code.gitea.io/gitea/modules/setting"
"code.gitea.io/gitea/modules/util"
"github.com/stretchr/testify/assert"
)
func TestMain(m *testing.M) {
models.MainTest(m, filepath.Join("..", "..", ".."))
}
func TestIndexAndSearch(t *testing.T) {
func TestBleveIndexAndSearch(t *testing.T) {
models.PrepareTestEnv(t)
dir, err := ioutil.TempDir("", "bleve.index")
@ -31,10 +25,9 @@ func TestIndexAndSearch(t *testing.T) {
}
defer util.RemoveAll(dir)
setting.Indexer.RepoIndexerEnabled = true
idx, _, err := NewBleveIndexer(dir)
if err != nil {
assert.Fail(t, "Unable to create indexer Error: %v", err)
assert.Fail(t, "Unable to create bleve indexer Error: %v", err)
if idx != nil {
idx.Close()
}
@ -42,45 +35,5 @@ func TestIndexAndSearch(t *testing.T) {
}
defer idx.Close()
err = idx.Index(1)
assert.NoError(t, err)
var (
keywords = []struct {
Keyword string
IDs []int64
Langs int
}{
{
Keyword: "Description",
IDs: []int64{1},
Langs: 1,
},
{
Keyword: "repo1",
IDs: []int64{1},
Langs: 1,
},
{
Keyword: "non-exist",
IDs: []int64{},
Langs: 0,
},
}
)
for _, kw := range keywords {
total, res, langs, err := idx.Search(nil, "", kw.Keyword, 1, 10)
assert.NoError(t, err)
assert.EqualValues(t, len(kw.IDs), total)
assert.NotNil(t, langs)
assert.Len(t, langs, kw.Langs)
var ids = make([]int64, 0, len(res))
for _, hit := range res {
ids = append(ids, hit.RepoID)
}
assert.EqualValues(t, kw.IDs, ids)
}
testIndexer("beleve", t, idx)
}

@ -0,0 +1,385 @@
// Copyright 2020 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 code
import (
"context"
"encoding/json"
"fmt"
"strconv"
"strings"
"time"
"code.gitea.io/gitea/models"
"code.gitea.io/gitea/modules/analyze"
"code.gitea.io/gitea/modules/base"
"code.gitea.io/gitea/modules/charset"
"code.gitea.io/gitea/modules/git"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/setting"
"code.gitea.io/gitea/modules/timeutil"
"github.com/go-enry/go-enry/v2"
"github.com/olivere/elastic/v7"
)
const (
esRepoIndexerLatestVersion = 1
)
var (
_ Indexer = &ElasticSearchIndexer{}
)
// ElasticSearchIndexer implements Indexer interface
type ElasticSearchIndexer struct {
client *elastic.Client
indexerAliasName string
}
type elasticLogger struct {
*log.Logger
}
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, bool, error) {
opts := []elastic.ClientOptionFunc{
elastic.SetURL(url),
elastic.SetSniff(false),
elastic.SetHealthcheckInterval(10 * time.Second),
elastic.SetGzip(false),
}
logger := elasticLogger{log.GetLogger(log.DEFAULT)}
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, false, err
}
indexer := &ElasticSearchIndexer{
client: client,
indexerAliasName: indexerName,
}
exists, err := indexer.init()
return indexer, !exists, err
}
const (
defaultMapping = `{
"mappings": {
"properties": {
"repo_id": {
"type": "long",
"index": true
},
"content": {
"type": "text",
"index": true
},
"commit_id": {
"type": "keyword",
"index": true
},
"language": {
"type": "keyword",
"index": true
},
"updated_at": {
"type": "long",
"index": true
}
}
}
}`
)
func (b *ElasticSearchIndexer) realIndexerName() string {
return fmt.Sprintf("%s.v%d", b.indexerAliasName, esRepoIndexerLatestVersion)
}
// Init will initialize the indexer
func (b *ElasticSearchIndexer) init() (bool, error) {
ctx := context.Background()
exists, err := b.client.IndexExists(b.realIndexerName()).Do(ctx)
if err != nil {
return false, err
}
if !exists {
var mapping = defaultMapping
createIndex, err := b.client.CreateIndex(b.realIndexerName()).BodyString(mapping).Do(ctx)
if err != nil {
return false, err
}
if !createIndex.Acknowledged {
return false, fmt.Errorf("create index %s with %s failed", b.realIndexerName(), mapping)
}
}
// check version
r, err := b.client.Aliases().Do(ctx)
if err != nil {
return false, err
}
realIndexerNames := r.IndicesByAlias(b.indexerAliasName)
if len(realIndexerNames) < 1 {
res, err := b.client.Alias().
Add(b.realIndexerName(), b.indexerAliasName).
Do(ctx)
if err != nil {
return false, err
}
if !res.Acknowledged {
return false, fmt.Errorf("")
}
} else if len(realIndexerNames) >= 1 && realIndexerNames[0] < b.realIndexerName() {
log.Warn("Found older gitea indexer named %s, but we will create a new one %s and keep the old NOT DELETED. You can delete the old version after the upgrade succeed.",
realIndexerNames[0], b.realIndexerName())
res, err := b.client.Alias().
Remove(realIndexerNames[0], b.indexerAliasName).
Add(b.realIndexerName(), b.indexerAliasName).
Do(ctx)
if err != nil {
return false, err
}
if !res.Acknowledged {
return false, fmt.Errorf("")
}
}
return exists, nil
}
func (b *ElasticSearchIndexer) addUpdate(sha string, update fileUpdate, repo *models.Repository) ([]elastic.BulkableRequest, error) {
stdout, err := git.NewCommand("cat-file", "-s", update.BlobSha).
RunInDir(repo.RepoPath())
if err != nil {
return nil, err
}
if size, err := strconv.Atoi(strings.TrimSpace(stdout)); err != nil {
return nil, fmt.Errorf("Misformatted git cat-file output: %v", err)
} else if int64(size) > setting.Indexer.MaxIndexerFileSize {
return []elastic.BulkableRequest{b.addDelete(update.Filename, repo)}, nil
}
fileContents, err := git.NewCommand("cat-file", "blob", update.BlobSha).
RunInDirBytes(repo.RepoPath())
if err != nil {
return nil, err
} else if !base.IsTextFile(fileContents) {
// FIXME: UTF-16 files will probably fail here
return nil, nil
}
id := filenameIndexerID(repo.ID, update.Filename)
return []elastic.BulkableRequest{
elastic.NewBulkIndexRequest().
Index(b.indexerAliasName).
Id(id).
Doc(map[string]interface{}{
"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 *ElasticSearchIndexer) addDelete(filename string, repo *models.Repository) elastic.BulkableRequest {
id := filenameIndexerID(repo.ID, filename)
return elastic.NewBulkDeleteRequest().
Index(b.indexerAliasName).
Id(id)
}
// Index will save the index data
func (b *ElasticSearchIndexer) Index(repo *models.Repository, sha string, changes *repoChanges) error {
reqs := make([]elastic.BulkableRequest, 0)
for _, update := range changes.Updates {
updateReqs, err := b.addUpdate(sha, update, repo)
if err != nil {
return err
}
if len(updateReqs) > 0 {
reqs = append(reqs, updateReqs...)
}
}
for _, filename := range changes.RemovedFilenames {
reqs = append(reqs, b.addDelete(filename, repo))
}
if len(reqs) > 0 {
_, err := b.client.Bulk().
Index(b.indexerAliasName).
Add(reqs...).
Do(context.Background())
return err
}
return nil
}
// Delete deletes indexes by ids
func (b *ElasticSearchIndexer) Delete(repoID int64) error {
_, err := b.client.DeleteByQuery(b.indexerAliasName).
Query(elastic.NewTermsQuery("repo_id", repoID)).
Do(context.Background())
return err
}
func convertResult(searchResult *elastic.SearchResult, kw string, pageSize int) (int64, []*SearchResult, []*SearchResultLanguages, error) {
hits := make([]*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 = -1, -1
c, ok := hit.Highlight["content"]
if ok && len(c) > 0 {
var subStr = make([]rune, 0, len(kw))
startIndex = strings.IndexFunc(c[0], func(r rune) bool {
if len(subStr) >= len(kw) {
subStr = subStr[1:]
}
subStr = append(subStr, r)
return strings.EqualFold(kw, string(subStr))
})
if startIndex > -1 {
endIndex = startIndex + len(kw)
} else {
panic(fmt.Sprintf("1===%#v", hit.Highlight))
}
} else {
panic(fmt.Sprintf("2===%#v", hit.Highlight))
}
repoID, fileName := parseIndexerID(hit.Id)
var res = make(map[string]interface{})
if err := json.Unmarshal(hit.Source, &res); err != nil {
return 0, nil, nil, err
}
language := res["language"].(string)
hits = append(hits, &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,
Color: enry.GetColor(language),
})
}
return searchResult.TotalHits(), hits, extractAggs(searchResult), nil
}
func extractAggs(searchResult *elastic.SearchResult) []*SearchResultLanguages {
var searchResultLanguages []*SearchResultLanguages
agg, found := searchResult.Aggregations.Terms("language")
if found {
searchResultLanguages = make([]*SearchResultLanguages, 0, 10)
for _, bucket := range agg.Buckets {
searchResultLanguages = append(searchResultLanguages, &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 *ElasticSearchIndexer) Search(repoIDs []int64, language, keyword string, page, pageSize int) (int64, []*SearchResult, []*SearchResultLanguages, error) {
kwQuery := elastic.NewMultiMatchQuery(keyword, "content")
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)
}
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.client.Search().
Index(b.indexerAliasName).
Aggregation("language", aggregation).
Query(query).
Highlight(elastic.NewHighlight().Field("content")).
Sort("repo_id", true).
From(start).Size(pageSize).
Do(context.Background())
if err != nil {
return 0, nil, nil, err
}
return convertResult(searchResult, kw, pageSize)
}
langQuery := elastic.NewMatchQuery("language", language)
countResult, err := b.client.Search().
Index(b.indexerAliasName).
Aggregation("language", aggregation).
Query(query).
Size(0). // We only needs stats information
Do(context.Background())
if err != nil {
return 0, nil, nil, err
}
query = query.Must(langQuery)
searchResult, err := b.client.Search().
Index(b.indexerAliasName).
Query(query).
Highlight(elastic.NewHighlight().Field("content")).
Sort("repo_id", true).
From(start).Size(pageSize).
Do(context.Background())
if err != nil {
return 0, nil, nil, err
}
total, hits, _, err := convertResult(searchResult, kw, pageSize)
return total, hits, extractAggs(countResult), err
}
// Close implements indexer
func (b *ElasticSearchIndexer) Close() {}

@ -0,0 +1,36 @@
// Copyright 2020 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 code
import (
"os"
"testing"
"code.gitea.io/gitea/models"
"github.com/stretchr/testify/assert"
)
func TestESIndexAndSearch(t *testing.T) {
models.PrepareTestEnv(t)
u := os.Getenv("TEST_INDEXER_CODE_ES_URL")
if u == "" {
t.SkipNow()
return
}
indexer, _, err := NewElasticSearchIndexer(u, "gitea_codes")
if err != nil {
assert.Fail(t, "Unable to create ES indexer Error: %v", err)
if indexer != nil {
indexer.Close()
}
return
}
defer indexer.Close()
testIndexer("elastic_search", t, indexer)
}

@ -7,8 +7,11 @@ package code
import (
"context"
"os"
"strconv"
"strings"
"time"
"code.gitea.io/gitea/models"
"code.gitea.io/gitea/modules/graceful"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/setting"
@ -37,12 +40,33 @@ type SearchResultLanguages struct {
// Indexer defines an interface to indexer issues contents
type Indexer interface {
Index(repoID int64) error
Index(repo *models.Repository, sha string, changes *repoChanges) error
Delete(repoID int64) error
Search(repoIDs []int64, language, keyword string, page, pageSize int) (int64, []*SearchResult, []*SearchResultLanguages, error)
Close()
}
func filenameIndexerID(repoID int64, filename string) string {
return indexerID(repoID) + "_" + filename
}
func parseIndexerID(indexerID string) (int64, string) {
index := strings.IndexByte(indexerID, '_')
if index == -1 {
log.Error("Unexpected ID in repo indexer: %s", indexerID)
}
repoID, _ := strconv.ParseInt(indexerID[:index], 10, 64)
return repoID, indexerID[index+1:]
}
func filenameOfIndexerID(indexerID string) string {
index := strings.IndexByte(indexerID, '_')
if index == -1 {
log.Error("Unexpected ID in repo indexer: %s", indexerID)
}
return indexerID[index+1:]
}
// Init initialize the repo indexer
func Init() {
if !setting.Indexer.RepoIndexerEnabled {
@ -63,33 +87,61 @@ func Init() {
waitChannel := make(chan time.Duration)
go func() {
start := time.Now()
log.Info("PID: %d Initializing Repository Indexer at: %s", os.Getpid(), setting.Indexer.RepoPath)
defer func() {
if err := recover(); err != nil {
log.Error("PANIC whilst initializing repository indexer: %v\nStacktrace: %s", err, log.Stack(2))
log.Error("The indexer files are likely corrupted and may need to be deleted")
log.Error("You can completely remove the %q directory to make Gitea recreate the indexes", setting.Indexer.RepoPath)
var (
rIndexer Indexer
populate bool
err error
)
switch setting.Indexer.RepoType {
case "bleve":
log.Info("PID: %d Initializing Repository Indexer at: %s", os.Getpid(), setting.Indexer.RepoPath)
defer func() {
if err := recover(); err != nil {
log.Error("PANIC whilst initializing repository indexer: %v\nStacktrace: %s", err, log.Stack(2))
log.Error("The indexer files are likely corrupted and may need to be deleted")
log.Error("You can completely remove the \"%s\" directory to make Gitea recreate the indexes", setting.Indexer.RepoPath)
}
}()
rIndexer, populate, err = NewBleveIndexer(setting.Indexer.RepoPath)
if err != nil {
if rIndexer != nil {
rIndexer.Close()
}
cancel()
indexer.Close()
close(waitChannel)
log.Fatal("PID: %d Unable to initialize the Repository Indexer at path: %s Error: %v", os.Getpid(), setting.Indexer.RepoPath, err)
log.Fatal("PID: %d Unable to initialize the bleve Repository Indexer at path: %s Error: %v", os.Getpid(), setting.Indexer.RepoPath, err)
}
}()
bleveIndexer, created, err := NewBleveIndexer(setting.Indexer.RepoPath)
if err != nil {
if bleveIndexer != nil {
bleveIndexer.Close()
case "elasticsearch":
log.Info("PID: %d Initializing Repository Indexer at: %s", os.Getpid(), setting.Indexer.RepoConnStr)
defer func() {
if err := recover(); err != nil {
log.Error("PANIC whilst initializing repository indexer: %v\nStacktrace: %s", err, log.Stack(2))
log.Error("The indexer files are likely corrupted and may need to be deleted")
log.Error("You can completely remove the \"%s\" index to make Gitea recreate the indexes", setting.Indexer.RepoConnStr)
}
}()
rIndexer, populate, err = NewElasticSearchIndexer(setting.Indexer.RepoConnStr, setting.Indexer.RepoIndexerName)
if err != nil {
if rIndexer != nil {
rIndexer.Close()
}
cancel()
indexer.Close()
close(waitChannel)
log.Fatal("PID: %d Unable to initialize the elasticsearch Repository Indexer connstr: %s Error: %v", os.Getpid(), setting.Indexer.RepoConnStr, err)
}
cancel()
indexer.Close()
close(waitChannel)
log.Fatal("PID: %d Unable to initialize the Repository Indexer at path: %s Error: %v", os.Getpid(), setting.Indexer.RepoPath, err)
default:
log.Fatal("PID: %d Unknown Indexer type: %s", os.Getpid(), setting.Indexer.RepoType)
}
indexer.set(bleveIndexer)
indexer.set(rIndexer)
go processRepoIndexerOperationQueue(indexer)
if created {
if populate {
go populateRepoIndexer()
}
select {

@ -0,0 +1,83 @@
// Copyright 2020 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 code
import (
"path/filepath"
"testing"
"code.gitea.io/gitea/models"
"github.com/stretchr/testify/assert"
)
func TestMain(m *testing.M) {
models.MainTest(m, filepath.Join("..", "..", ".."))
}
func testIndexer(name string, t *testing.T, indexer Indexer) {
t.Run(name, func(t *testing.T) {
var repoID int64 = 1
err := index(indexer, repoID)
assert.NoError(t, err)
var (
keywords = []struct {
RepoIDs []int64
Keyword string
IDs []int64
Langs int
}{
{
RepoIDs: nil,
Keyword: "Description",
IDs: []int64{repoID},
Langs: 1,
},
{
RepoIDs: []int64{2},
Keyword: "Description",
IDs: []int64{},
Langs: 0,
},
{
RepoIDs: nil,
Keyword: "repo1",
IDs: []int64{repoID},
Langs: 1,
},
{
RepoIDs: []int64{2},
Keyword: "repo1",
IDs: []int64{},
Langs: 0,
},
{
RepoIDs: nil,
Keyword: "non-exist",
IDs: []int64{},
Langs: 0,
},
}
)
for _, kw := range keywords {
t.Run(kw.Keyword, func(t *testing.T) {
total, res, langs, err := indexer.Search(kw.RepoIDs, "", kw.Keyword, 1, 10)
assert.NoError(t, err)
assert.EqualValues(t, len(kw.IDs), total)
assert.EqualValues(t, kw.Langs, len(langs))
var ids = make([]int64, 0, len(res))
for _, hit := range res {
ids = append(ids, hit.RepoID)
assert.EqualValues(t, "# repo1\n\nDescription for repo1", hit.Content)
}
assert.EqualValues(t, kw.IDs, ids)
})
}
assert.NoError(t, indexer.Delete(repoID))
})
}

@ -10,7 +10,6 @@ import (
"code.gitea.io/gitea/models"
"code.gitea.io/gitea/modules/graceful"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/setting"
)
type repoIndexerOperation struct {
@ -25,6 +24,30 @@ func initQueue(queueLength int) {
repoIndexerOperationQueue = make(chan repoIndexerOperation, queueLength)
}
func index(indexer Indexer, repoID int64) error {
repo, err := models.GetRepositoryByID(repoID)
if err != nil {
return err
}
sha, err := getDefaultBranchSha(repo)
if err != nil {
return err
}
changes, err := getRepoChanges(repo, sha)
if err != nil {
return err
} else if changes == nil {
return nil
}
if err := indexer.Index(repo, sha, changes); err != nil {
return err
}
return repo.UpdateIndexerStatus(models.RepoIndexerTypeCode, sha)
}
func processRepoIndexerOperationQueue(indexer Indexer) {
for {
select {
@ -35,7 +58,7 @@ func processRepoIndexerOperationQueue(indexer Indexer) {
log.Error("indexer.Delete: %v", err)
}
} else {
if err = indexer.Index(op.repoID); err != nil {
if err = index(indexer, op.repoID); err != nil {
log.Error("indexer.Index: %v", err)
}
}
@ -60,9 +83,6 @@ func UpdateRepoIndexer(repo *models.Repository, watchers ...chan<- error) {
}
func addOperationToQueue(op repoIndexerOperation) {
if !setting.Indexer.RepoIndexerEnabled {
return
}
select {
case repoIndexerOperationQueue <- op:
break

@ -7,6 +7,8 @@ package code
import (
"fmt"
"sync"
"code.gitea.io/gitea/models"
)
var (
@ -55,12 +57,12 @@ func (w *wrappedIndexer) get() (Indexer, error) {
return w.internal, nil
}
func (w *wrappedIndexer) Index(repoID int64) error {
func (w *wrappedIndexer) Index(repo *models.Repository, sha string, changes *repoChanges) error {
indexer, err := w.get()
if err != nil {
return err
}
return indexer.Index(repoID)
return indexer.Index(repo, sha, changes)
}
func (w *wrappedIndexer) Delete(repoID int64) error {

@ -36,7 +36,10 @@ var (
StartupTimeout time.Duration
RepoIndexerEnabled bool
RepoType string
RepoPath string
RepoConnStr string
RepoIndexerName string
UpdateQueueLength int
MaxIndexerFileSize int64
IncludePatterns []glob.Glob
@ -52,6 +55,11 @@ var (
IssueQueueConnStr: "",
IssueQueueBatchNumber: 20,
RepoIndexerEnabled: false,
RepoType: "bleve",
RepoPath: "indexers/repos.bleve",
RepoConnStr: "",
RepoIndexerName: "gitea_codes",
MaxIndexerFileSize: 1024 * 1024,
ExcludeVendored: true,
}
@ -73,10 +81,14 @@ func newIndexerService() {
Indexer.IssueQueueBatchNumber = sec.Key("ISSUE_INDEXER_QUEUE_BATCH_NUMBER").MustInt(20)
Indexer.RepoIndexerEnabled = sec.Key("REPO_INDEXER_ENABLED").MustBool(false)
Indexer.RepoType = sec.Key("REPO_INDEXER_TYPE").MustString("bleve")
Indexer.RepoPath = sec.Key("REPO_INDEXER_PATH").MustString(path.Join(AppDataPath, "indexers/repos.bleve"))
if !filepath.IsAbs(Indexer.RepoPath) {
Indexer.RepoPath = path.Join(AppWorkPath, Indexer.RepoPath)
}
Indexer.RepoConnStr = sec.Key("REPO_INDEXER_CONN_STR").MustString("")
Indexer.RepoIndexerName = sec.Key("REPO_INDEXER_NAME").MustString("gitea_codes")
Indexer.IncludePatterns = IndexerGlobFromString(sec.Key("REPO_INDEXER_INCLUDE").MustString(""))
Indexer.ExcludePatterns = IndexerGlobFromString(sec.Key("REPO_INDEXER_EXCLUDE").MustString(""))
Indexer.ExcludeVendored = sec.Key("REPO_INDEXER_EXCLUDE_VENDORED").MustBool(true)

@ -49,15 +49,15 @@
</table>
</div>
</div>
<div class="ui bottom attached table segment">
<div class="ui bottom attached table segment">
{{if $result.Language}}
<i class="color-icon" style="background-color: {{$result.Color}}"></i>{{$result.Language}}
<i class="color-icon" style="background-color: {{$result.Color}}"></i>{{$result.Language}}
{{end}}
&nbsp;
{{if not $result.UpdatedUnix.IsZero}}
<span class="ui small grey text pull right">{{$.i18n.Tr "explore.code_last_indexed_at" (TimeSinceUnix $result.UpdatedUnix $.i18n.Lang) | Safe}} &nbsp;</span>
{{end}}
</div>
{{if not $result.UpdatedUnix.IsZero}}
<span class="ui small grey text pull right">{{$.i18n.Tr "explore.code_last_indexed_at" (TimeSinceUnix $result.UpdatedUnix $.i18n.Lang) | Safe}} &nbsp;</span>
{{end}}
</div>
</div>
{{end}}
</div>

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