Elasticsearch：通過用戶端訪問Elasticsearch

//以Go 1.19.1版本為例。
package main

import (
  "log"
  "github.com/elastic/go-elasticsearch/v7"
)

func main() {
  cfg := elasticsearch.Config {
    Addresses: []string{
      "<YourEsHost>",
    },
    Username: "<UserName>",
    Password: "<YourPassword>",
  }

  es, err := elasticsearch.NewClient(cfg)
  if err != nil {
    log.Fatalf("Error creating the client: %s", err)
  }

  res, err := es.Info()
  if err != nil {
    log.Fatalf("Error getting response: %s", err)
  }

  defer res.Body.Close()
  log.Println(res)
}

//以6.7版本的High Level REST Client為例。
import org.apache.http.HttpHost;
import org.apache.http.auth.AuthScope;
import org.apache.http.auth.UsernamePasswordCredentials;
import org.apache.http.client.CredentialsProvider;
import org.apache.http.impl.client.BasicCredentialsProvider;
import org.apache.http.impl.nio.client.HttpAsyncClientBuilder;

import org.elasticsearch.action.delete.DeleteRequest;
import org.elasticsearch.action.delete.DeleteResponse;
import org.elasticsearch.action.index.IndexRequest;
import org.elasticsearch.action.index.IndexResponse;
import org.elasticsearch.client.*;

import java.io.IOException;
import java.util.HashMap;
import java.util.Map;

public class RestClientTest67 {

    private static final RequestOptions COMMON_OPTIONS;

    static {
        RequestOptions.Builder builder = RequestOptions.DEFAULT.toBuilder();

        // 預設緩衝限制為100MB，此處修改為30MB。
        builder.setHttpAsyncResponseConsumerFactory(
                new HttpAsyncResponseConsumerFactory
                        .HeapBufferedResponseConsumerFactory(30 * 1024 * 1024));
        COMMON_OPTIONS = builder.build();
    }

    public static void main(String[] args) {
        // Elasticsearch叢集需要basic auth驗證。
        final CredentialsProvider credentialsProvider = new BasicCredentialsProvider();
       //訪問使用者名稱和密碼為您建立Elasticsearch執行個體時設定的使用者名稱和密碼，也是Kibana控制台的登入使用者名稱和密碼。
        credentialsProvider.setCredentials(AuthScope.ANY, new UsernamePasswordCredentials("<UserName>", "<YourPassword>"));

        // 通過builder建立rest client，配置http client的HttpClientConfigCallback。
       // 單擊所建立的Elasticsearch執行個體ID，在基本資料頁面擷取公網地址，即為ES叢集地址。
        RestClientBuilder builder = RestClient.builder(new HttpHost("<YourEsHost>", 9200, "http"))
                .setHttpClientConfigCallback(new RestClientBuilder.HttpClientConfigCallback() {
                    @Override
                    public HttpAsyncClientBuilder customizeHttpClient(HttpAsyncClientBuilder httpClientBuilder) {
                        return httpClientBuilder.setDefaultCredentialsProvider(credentialsProvider);
                    }
                });

        // RestHighLevelClient執行個體通過REST low-level client builder進行構造。
        RestHighLevelClient highClient = new RestHighLevelClient(builder);

        try {
            // 建立request。
            Map<String, Object> jsonMap = new HashMap<>();
           jsonMap.put("<YourEsField1>", "<YourEsFieldValue1>");
           jsonMap.put("<YourEsField2>", "<YourEsFieldValue2>");
           IndexRequest indexRequest = new IndexRequest("<YourEsIndex>", "<YourEsType>", "<YourEsId>").source(jsonMap);

            // 同步執行，並使用自訂RequestOptions（COMMON_OPTIONS）。
            IndexResponse indexResponse = highClient.index(indexRequest, COMMON_OPTIONS);

            long version = indexResponse.getVersion();

            System.out.println("Index document successfully! " + version);

            highClient.close();

        } catch (IOException ioException) {
            // 異常處理。
        }
    }
}

<?php
require 'vendor/autoload.php';
use Elasticsearch\ClientBuilder;

$client = ClientBuilder::create()->setHosts([
  [
    'host'   => '<YourEsHost>',
    'port'   => '9200',
    'scheme' => 'http',
    'user'   => '<UserName>',
    'pass'   => '<YourPassword>'
  ]
])->setConnectionPool('\Elasticsearch\ConnectionPool\SimpleConnectionPool', [])
  ->setRetries(10)->build();

$indexParams = [
  'index'  => '<YourEsIndex>',
  'type'   => '<YourEsType>',
  'id'     => '<YourEsId>',
  'body'   => ['<YourEsField>' => '<YourEsFieldValue>'],
  'client' => [
    'timeout'         => 10,
    'connect_timeout' => 10
  ]
];
$indexResponse = $client->index($indexParams);
print_r($indexResponse);

$searchParams = [
  'index'  => '<YourEsIndex>',
  'type'   => '<YourEsType>',
  'body'   => [
    'query' => [
      'match' => [
        '<YourEsField>' => '<YourEsFieldValue>'
      ]
    ]
  ],
  'client' => [
    'timeout'         => 10,
    'connect_timeout' => 10
  ]
];
$searchResponse = $client->search($searchParams);
print_r($searchResponse);
?>

from elasticsearch import Elasticsearch, RequestsHttpConnection
import certifi
es = Elasticsearch(
    ['<YourEsHost>'],
    http_auth=('<UserName>', '<YourPassword>'),
    port=9200,
    use_ssl=False
)
res = es.index(index="<YourEsIndex>", doc_type="<YourEsType>", id=<YourEsId>, body={"<YourEsField1>": "<YourEsFieldValue1>", "<YourEsField2>": "<YourEsFieldValue2>"})
res = es.get(index="<YourEsIndex>", doc_type="<YourEsType>", id=<YourEsId>)
print(res['_source'])