forgejo/modules/indexer/issues/meilisearch.go
techknowlogick 92c160d8e7
Add meilisearch support (#23136)
Add meilisearch support

Fixes #20665
2023-03-28 22:23:23 -04:00

183 lines
4.1 KiB
Go

// Copyright 2023 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package issues
import (
"context"
"strconv"
"sync"
"time"
"github.com/meilisearch/meilisearch-go"
)
var _ Indexer = &MeilisearchIndexer{}
// MeilisearchIndexer implements Indexer interface
type MeilisearchIndexer struct {
client *meilisearch.Client
indexerName string
available bool
availabilityCallback func(bool)
stopTimer chan struct{}
lock sync.RWMutex
}
// MeilisearchIndexer creates a new meilisearch indexer
func NewMeilisearchIndexer(url, apiKey, indexerName string) (*MeilisearchIndexer, error) {
client := meilisearch.NewClient(meilisearch.ClientConfig{
Host: url,
APIKey: apiKey,
})
indexer := &MeilisearchIndexer{
client: client,
indexerName: indexerName,
available: true,
stopTimer: make(chan struct{}),
}
ticker := time.NewTicker(10 * time.Second)
go func() {
for {
select {
case <-ticker.C:
indexer.checkAvailability()
case <-indexer.stopTimer:
ticker.Stop()
return
}
}
}()
return indexer, nil
}
// Init will initialize the indexer
func (b *MeilisearchIndexer) Init() (bool, error) {
_, err := b.client.GetIndex(b.indexerName)
if err == nil {
return true, nil
}
_, err = b.client.CreateIndex(&meilisearch.IndexConfig{
Uid: b.indexerName,
PrimaryKey: "id",
})
if err != nil {
return false, b.checkError(err)
}
_, err = b.client.Index(b.indexerName).UpdateFilterableAttributes(&[]string{"repo_id"})
return false, b.checkError(err)
}
// SetAvailabilityChangeCallback sets callback that will be triggered when availability changes
func (b *MeilisearchIndexer) SetAvailabilityChangeCallback(callback func(bool)) {
b.lock.Lock()
defer b.lock.Unlock()
b.availabilityCallback = callback
}
// Ping checks if meilisearch is available
func (b *MeilisearchIndexer) Ping() bool {
b.lock.RLock()
defer b.lock.RUnlock()
return b.available
}
// Index will save the index data
func (b *MeilisearchIndexer) Index(issues []*IndexerData) error {
if len(issues) == 0 {
return nil
}
for _, issue := range issues {
_, err := b.client.Index(b.indexerName).AddDocuments(issue)
if err != nil {
return b.checkError(err)
}
}
// TODO: bulk send index data
return nil
}
// Delete deletes indexes by ids
func (b *MeilisearchIndexer) Delete(ids ...int64) error {
if len(ids) == 0 {
return nil
}
for _, id := range ids {
_, err := b.client.Index(b.indexerName).DeleteDocument(strconv.FormatInt(id, 10))
if err != nil {
return b.checkError(err)
}
}
// TODO: bulk send deletes
return nil
}
// Search searches for issues by given conditions.
// Returns the matching issue IDs
func (b *MeilisearchIndexer) Search(ctx context.Context, keyword string, repoIDs []int64, limit, start int) (*SearchResult, error) {
filter := make([][]string, 0, len(repoIDs))
for _, repoID := range repoIDs {
filter = append(filter, []string{"repo_id = " + strconv.FormatInt(repoID, 10)})
}
searchRes, err := b.client.Index(b.indexerName).Search(keyword, &meilisearch.SearchRequest{
Filter: filter,
Limit: int64(limit),
Offset: int64(start),
})
if err != nil {
return nil, b.checkError(err)
}
hits := make([]Match, 0, len(searchRes.Hits))
for _, hit := range searchRes.Hits {
hits = append(hits, Match{
ID: int64(hit.(map[string]interface{})["id"].(float64)),
})
}
return &SearchResult{
Total: searchRes.TotalHits,
Hits: hits,
}, nil
}
// Close implements indexer
func (b *MeilisearchIndexer) Close() {
select {
case <-b.stopTimer:
default:
close(b.stopTimer)
}
}
func (b *MeilisearchIndexer) checkError(err error) error {
return err
}
func (b *MeilisearchIndexer) checkAvailability() {
_, err := b.client.Health()
if err != nil {
b.setAvailability(false)
return
}
b.setAvailability(true)
}
func (b *MeilisearchIndexer) setAvailability(available bool) {
b.lock.Lock()
defer b.lock.Unlock()
if b.available == available {
return
}
b.available = available
if b.availabilityCallback != nil {
// Call the callback from within the lock to ensure that the ordering remains correct
b.availabilityCallback(b.available)
}
}