使用RestHighLevelClient在基本身份验证代理后面使用ElasticSearch端点

Question

我有一个ElasticSearch集群，该集群位于配置了基本身份验证的代理后面。如何使用凭证从RestHighLevelClient拨打电话？在SpringBoot中，通常必须像这样配置HttpClientContext：

@Bean
public HttpClientContext configuredContext() {
    CredentialsProvider credsProvider = new BasicCredentialsProvider();
    credsProvider.setCredentials(AuthScope.ANY, new UsernamePasswordCredentials(DEFAULT_USER, DEFAULT_PASS));

    AuthCache authCache = new BasicAuthCache();
    authCache.put(httpHost, new BasicScheme());

    final HttpClientContext context = HttpClientContext.create();
    context.setCredentialsProvider(credsProvider);
    context.setAuthCache(authCache);
    return context;
}

，但是在ClientBuilder或上下文请求中找不到任何合适的参数。有什么办法可以使该设置正常工作吗？

Answer 1

您可以将 RestHighLevelClient 实例创建为

final CredentialsProvider credentialsProvider = new BasicCredentialsProvider();
    credentialsProvider.setCredentials(AuthScope.ANY,
            new UsernamePasswordCredentials("user", "password"));

    RestClientBuilder builder = RestClient.builder(new HttpHost("server", port))
            .setHttpClientConfigCallback(new RestClientBuilder.HttpClientConfigCallback() {
                @Override
                public HttpAsyncClientBuilder customizeHttpClient(HttpAsyncClientBuilder httpClientBuilder) {
                    return httpClientBuilder.setDefaultCredentialsProvider(credentialsProvider);
                }
            });

    RestHighLevelClient client = new RestHighLevelClient(builder);

https://www.elastic.co/guide/en/elasticsearch/client/java-rest/current/_basic_authentication.html。希望这会有所帮助。