forked from gitea/gitea
93 lines
1.8 KiB
Go
93 lines
1.8 KiB
Go
// Copyright 2023 The Gitea Authors. All rights reserved.
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// SPDX-License-Identifier: MIT
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package elasticsearch
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import (
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"context"
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"fmt"
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"code.gitea.io/gitea/modules/indexer/internal"
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"github.com/olivere/elastic/v7"
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)
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var _ internal.Indexer = &Indexer{}
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// Indexer represents a basic elasticsearch indexer implementation
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type Indexer struct {
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Client *elastic.Client
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url string
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indexName string
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version int
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mapping string
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}
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func NewIndexer(url, indexName string, version int, mapping string) *Indexer {
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return &Indexer{
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url: url,
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indexName: indexName,
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version: version,
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mapping: mapping,
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}
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}
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// Init initializes the indexer
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func (i *Indexer) Init(ctx context.Context) (bool, error) {
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if i == nil {
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return false, fmt.Errorf("cannot init nil indexer")
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}
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if i.Client != nil {
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return false, fmt.Errorf("indexer is already initialized")
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}
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client, err := i.initClient()
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if err != nil {
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return false, err
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}
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i.Client = client
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exists, err := i.Client.IndexExists(i.VersionedIndexName()).Do(ctx)
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if err != nil {
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return false, err
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}
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if exists {
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return true, nil
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}
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if err := i.createIndex(ctx); err != nil {
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return false, err
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}
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return exists, nil
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}
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// Ping checks if the indexer is available
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func (i *Indexer) Ping(ctx context.Context) error {
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if i == nil {
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return fmt.Errorf("cannot ping nil indexer")
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}
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if i.Client == nil {
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return fmt.Errorf("indexer is not initialized")
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}
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resp, err := i.Client.ClusterHealth().Do(ctx)
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if err != nil {
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return err
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}
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if resp.Status != "green" {
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// see https://www.elastic.co/guide/en/elasticsearch/reference/current/cluster-health.html
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return fmt.Errorf("status of elasticsearch cluster is %s", resp.Status)
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}
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return nil
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}
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// Close closes the indexer
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func (i *Indexer) Close() {
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if i == nil {
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return
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}
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i.Client = nil
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}
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