检查索引是否存在 Elasticsearch

Question

我想在 elasticsearch 中检查索引是否存在。如果它不存在，它应该创建索引并执行其他功能。我试图为此找到解决方案，但没有找到任何完美的解决方案。任何人都可以解决这个问题。

我正在使用 Elasticsearch 库。

**$client = new Elasticsearch\Client();**

Answer 1

此处列出所有索引的文档：https://www.elastic.co/guide/en/elasticsearch/reference/current/_list_all_indexes.html

使用卷曲：

curl 'localhost:9200/_cat/indices?v'

Answer 2

根据index operations and source code，以下应该有效

 $client = new Elasticsearch\Client();
 $indexParams['index']  = 'my_index';   
 $client->indices()->exists($indexParams);

Answer 3

这将 return 对或错：

$params = ['index' => 'products'];
$bool=$client->indices()->exists($params);

Answer 4

使用 Facade 的其他方式：

use ScoutElastic\Facades\ElasticClient;

$indexParams['index']  = "model_index";
$exists = ElasticClient::indices()->exists($indexParams);
if ($exists) {
   //do somthing
}

Answer 5

我可以用 node.js 做到这一点，如下所示

const { Client } = require('@elastic/elasticsearch');
const client = new Client({
  node: ES_URL,
});
await client.indices.exists({ index: 'INDEX_NAME' });

响应应类似于下面的响应：

{
  body: true,
  statusCode: 200,
  headers: {
    date: 'Sun, 07 Mar 2021 13:07:31 GMT',
    server: 'Apache/2.4.46 (Unix) OpenSSL/1.1.1d',
    'content-type': 'application/json; charset=UTF-8',
    'content-length': '2796',
    'keep-alive': 'timeout=5, max=100',
    connection: 'Keep-Alive'
  },
  meta: {
    context: null,
    request: { params: [Object], options: {}, id: 1 },
    name: 'elasticsearch-js',
    connection: {
      url: 'ES_URL',
      id: 'ES_ID',
      headers: {},
      deadCount: 0,
      resurrectTimeout: 0,
      _openRequests: 0,
      status: 'alive',
      roles: [Object]
    },
    attempts: 0,
    aborted: false
  }
}

检查索引是否存在 Elasticsearch

Check if the index exists or not Elasticsearch

php

indexing

elasticsearch