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forgejo/modules/indexer/code/indexer_test.go
Jason Song 375fd15fbf
Refactor indexer (#25174)
Refactor `modules/indexer` to make it more maintainable. And it can be
easier to support more features. I'm trying to solve some of issue
searching, this is a precursor to making functional changes.

Current supported engines and the index versions:

| engines | issues | code |
| - | - | - |
| db | Just a wrapper for database queries, doesn't need version | - |
| bleve | The version of index is **2** | The version of index is **6**
|
| elasticsearch | The old index has no version, will be treated as
version **0** in this PR | The version of index is **1** |
| meilisearch | The old index has no version, will be treated as version
**0** in this PR | - |


## Changes

### Split

Splited it into mutiple packages

```text
indexer
├── internal
│   ├── bleve
│   ├── db
│   ├── elasticsearch
│   └── meilisearch
├── code
│   ├── bleve
│   ├── elasticsearch
│   └── internal
└── issues
    ├── bleve
    ├── db
    ├── elasticsearch
    ├── internal
    └── meilisearch
```

- `indexer/interanal`: Internal shared package for indexer.
- `indexer/interanal/[engine]`: Internal shared package for each engine
(bleve/db/elasticsearch/meilisearch).
- `indexer/code`: Implementations for code indexer.
- `indexer/code/internal`: Internal shared package for code indexer.
- `indexer/code/[engine]`: Implementation via each engine for code
indexer.
- `indexer/issues`: Implementations for issues indexer.

### Deduplication

- Combine `Init/Ping/Close` for code indexer and issues indexer.
- ~Combine `issues.indexerHolder` and `code.wrappedIndexer` to
`internal.IndexHolder`.~ Remove it, use dummy indexer instead when the
indexer is not ready.
- Duplicate two copies of creating ES clients.
- Duplicate two copies of `indexerID()`.


### Enhancement

- [x] Support index version for elasticsearch issues indexer, the old
index without version will be treated as version 0.
- [x] Fix spell of `elastic_search/ElasticSearch`, it should be
`Elasticsearch`.
- [x] Improve versioning of ES index. We don't need `Aliases`:
- Gitea does't need aliases for "Zero Downtime" because it never delete
old indexes.
- The old code of issues indexer uses the orignal name to create issue
index, so it's tricky to convert it to an alias.
- [x] Support index version for meilisearch issues indexer, the old
index without version will be treated as version 0.
- [x] Do "ping" only when `Ping` has been called, don't ping
periodically and cache the status.
- [x] Support the context parameter whenever possible.
- [x] Fix outdated example config.
- [x] Give up the requeue logic of issues indexer: When indexing fails,
call Ping to check if it was caused by the engine being unavailable, and
only requeue the task if the engine is unavailable.
- It is fragile and tricky, could cause data losing (It did happen when
I was doing some tests for this PR). And it works for ES only.
- Just always requeue the failed task, if it caused by bad data, it's a
bug of Gitea which should be fixed.

---------

Co-authored-by: Giteabot <teabot@gitea.io>
2023-06-23 12:37:56 +00:00

132 lines
2.7 KiB
Go

// Copyright 2020 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package code
import (
"context"
"os"
"path/filepath"
"testing"
"code.gitea.io/gitea/models/unittest"
"code.gitea.io/gitea/modules/git"
"code.gitea.io/gitea/modules/indexer/code/bleve"
"code.gitea.io/gitea/modules/indexer/code/elasticsearch"
"code.gitea.io/gitea/modules/indexer/code/internal"
_ "code.gitea.io/gitea/models"
"github.com/stretchr/testify/assert"
)
func TestMain(m *testing.M) {
unittest.MainTest(m, &unittest.TestOptions{
GiteaRootPath: filepath.Join("..", "..", ".."),
})
}
func testIndexer(name string, t *testing.T, indexer internal.Indexer) {
t.Run(name, func(t *testing.T) {
var repoID int64 = 1
err := index(git.DefaultContext, indexer, repoID)
assert.NoError(t, err)
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(context.TODO(), kw.RepoIDs, "", kw.Keyword, 1, 10, false)
assert.NoError(t, err)
assert.Len(t, kw.IDs, int(total))
assert.Len(t, langs, kw.Langs)
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(context.Background(), repoID))
})
}
func TestBleveIndexAndSearch(t *testing.T) {
unittest.PrepareTestEnv(t)
dir := t.TempDir()
idx := bleve.NewIndexer(dir)
_, err := idx.Init(context.Background())
if err != nil {
assert.Fail(t, "Unable to create bleve indexer Error: %v", err)
if idx != nil {
idx.Close()
}
return
}
defer idx.Close()
testIndexer("beleve", t, idx)
}
func TestESIndexAndSearch(t *testing.T) {
unittest.PrepareTestEnv(t)
u := os.Getenv("TEST_INDEXER_CODE_ES_URL")
if u == "" {
t.SkipNow()
return
}
indexer := elasticsearch.NewIndexer(u, "gitea_codes")
if _, err := indexer.Init(context.Background()); err != nil {
assert.Fail(t, "Unable to init ES indexer Error: %v", err)
if indexer != nil {
indexer.Close()
}
return
}
defer indexer.Close()
testIndexer("elastic_search", t, indexer)
}