poyee-app/tzy-sportcard/src/main/java/com/tzy/elasticsearch/config/RestClientConfig.java

package com.tzy.elasticsearch.config;


import org.apache.http.HttpHost;
import org.elasticsearch.client.RestClient;
import org.elasticsearch.client.RestClientBuilder;
import org.elasticsearch.client.RestHighLevelClient;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.elasticsearch.config.AbstractElasticsearchConfiguration;

import javax.annotation.PostConstruct;
import java.util.ArrayList;
import java.util.List;

//@Configuration
public class RestClientConfig extends AbstractElasticsearchConfiguration {

//    @Value("${elasticsearch.rest.uris}")
    private String uris;

    @Bean
    public RestHighLevelClient buildRestHighLevelClient() {
        return elasticsearchClient();
    }

    /**
     * 防止netty的bug
     * java.lang.IllegalStateException: availableProcessors is already set to [4], rejecting [4]
     */
    @PostConstruct
    void init() {
        System.setProperty("es.set.netty.runtime.available.processors", "false");
    }

    @Override
    public RestHighLevelClient elasticsearchClient() {
        // 拆分地址
        List<HttpHost> hostLists = new ArrayList<>();
        String[] hostArray = uris.split(",");
        for (String addr : hostArray) {
            String host = addr.split(":")[0];
            String port = addr.split(":")[1];
            hostLists.add(new HttpHost(host, Integer.parseInt(port), "http"));
        }
        // 转换成 HttpHost 数组
        HttpHost[] httpHosts = hostLists.toArray(new HttpHost[]{});
        // 构建连接对象
        RestClientBuilder builder = RestClient.builder(httpHosts);

        // 设置用户名、密码
        /*CredentialsProvider credentialsProvider = new BasicCredentialsProvider();
        credentialsProvider.setCredentials(AuthScope.ANY,new UsernamePasswordCredentials(userName,password));*/

        // 连接延时配置
        /*builder.setRequestConfigCallback(requestConfigBuilder -> {
            requestConfigBuilder.setConnectTimeout(connectTimeOut);
            requestConfigBuilder.setSocketTimeout(socketTimeOut);
            requestConfigBuilder.setConnectionRequestTimeout(connectionRequestTimeOut);
            return requestConfigBuilder;
        });*/
        // 连接数配置
        /*builder.setHttpClientConfigCallback(httpClientBuilder -> {
            httpClientBuilder.setMaxConnTotal(maxConnectNum);
            httpClientBuilder.setMaxConnPerRoute(maxConnectNumPerRoute);
            httpClientBuilder.setDefaultCredentialsProvider(credentialsProvider);
            return httpClientBuilder;
        });*/

        return new RestHighLevelClient(builder);
        /*final ClientConfiguration clientConfiguration = ClientConfiguration.builder()
                .connectedTo(uri)
                .build();
        return RestClients.create(clientConfiguration).rest();*/
    }
}