forgejo/modules/indexer/issues/bleve/bleve_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

90 lines
1.7 KiB
Go

// Copyright 2018 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package bleve
import (
"context"
"testing"
"code.gitea.io/gitea/modules/indexer/issues/internal"
"github.com/stretchr/testify/assert"
)
func TestBleveIndexAndSearch(t *testing.T) {
dir := t.TempDir()
indexer := NewIndexer(dir)
defer indexer.Close()
if _, err := indexer.Init(context.Background()); err != nil {
assert.Fail(t, "Unable to initialize bleve indexer: %v", err)
return
}
err := indexer.Index(context.Background(), []*internal.IndexerData{
{
ID: 1,
RepoID: 2,
Title: "Issue search should support Chinese",
Content: "As title",
Comments: []string{
"test1",
"test2",
},
},
{
ID: 2,
RepoID: 2,
Title: "CJK support could be optional",
Content: "Chinese Korean and Japanese should be supported but I would like it's not enabled by default",
Comments: []string{
"LGTM",
"Good idea",
},
},
})
assert.NoError(t, err)
keywords := []struct {
Keyword string
IDs []int64
}{
{
Keyword: "search",
IDs: []int64{1},
},
{
Keyword: "test1",
IDs: []int64{1},
},
{
Keyword: "test2",
IDs: []int64{1},
},
{
Keyword: "support",
IDs: []int64{1, 2},
},
{
Keyword: "chinese",
IDs: []int64{1, 2},
},
{
Keyword: "help",
IDs: []int64{},
},
}
for _, kw := range keywords {
res, err := indexer.Search(context.TODO(), kw.Keyword, []int64{2}, 10, 0)
assert.NoError(t, err)
ids := make([]int64, 0, len(res.Hits))
for _, hit := range res.Hits {
ids = append(ids, hit.ID)
}
assert.ElementsMatch(t, kw.IDs, ids)
}
}