spring boot 集成 elasticsearch 5.x 、x-pack 權限

目錄

####項目環境：

• jdk 1.8
• spring boot 1.5.1

由於spring boot 目前SpringBoot 1.5.1.RELEASE和Spring Data Elasticsearch 2.10.RELEASE僅支持ElasticSearch 2.4.0。 他們不支持最新版本的ElasticSearch 5.x版本。

Spring Boot Version (x)	Spring Data Elasticsearch Version (y)	Elasticsearch Version (z)
x <= 1.3.5	y <= 1.3.4	z <= 1.7.2*
x >= 1.4.x	2.0.0 <=y < 5.0.0**	2.0.0 <= z < 5.0.0**

mavan 配置 pom.xml

    <!-- add the elasticsearch repo -->
   <repositories>
    <repository>
        <id>elasticsearch-releases</id>
        <url>https://artifacts.elastic.co/maven</url>
        <releases>
            <enabled>true</enabled>
        </releases>
        <snapshots>
            <enabled>false</enabled>
        </snapshots>
    </repository>
   </repositories>
   <!-- 版本控制  -->
    <properties>
			<log4j-api.version>2.8.2</log4j-api.version>
			<log4j-core.version>2.8.2</log4j-core.version>
			<elasticsearch.version>5.5.3</elasticsearch.version>
			<transport.version>5.5.3</transport.version>
			<!-- x-pack-transpor 版本控制 start -->
		    <x-pack-transport.version>5.5.3</x-pack-transport.version>
		    <!-- x-pack-transpor 版本控制  end -->
	</properties>
    <!-- elasticsearch 5.x 依賴 --> 
    <dependencies>
       <dependency>
           <groupId>org.apache.logging.log4j</groupId>
           <artifactId>log4j-api</artifactId>
           <version>${log4j-api.version}</version>
       </dependency>
       <dependency>
           <groupId>org.apache.logging.log4j</groupId>
           <artifactId>log4j-core</artifactId>
           <version>${log4j-core.version}</version>
       </dependency>
       <dependency>
           <groupId>org.elasticsearch</groupId>
           <artifactId>elasticsearch</artifactId>
           <version>${elasticsearch.version}</version>
       </dependency>
       <dependency>
           <groupId>org.elasticsearch.client</groupId>
           <artifactId>transport</artifactId>
           <version>${transport.version}</version>
       </dependency>
         <dependency>
        <groupId>org.elasticsearch.client</groupId>
        <!-- x-pack-transpor 版本控制 start -->
        <artifactId>x-pack-transport</artifactId>
        <version>${x-pack-transport.version}</version>
        <!-- x-pack-transpor 版本控制 end -->
    </dependency>
   </dependencies> 

#####: 特注
ElasticSearch 5.x 根據官網配置maven 依賴, 由於 5.0x的 jar 內部使用的 apache log4日誌。
所以要配置額外的依賴支持 org.apache.logging.log4j。

application-dev.yml

spring:
     data:
   elasticsearch:
         cluster-name: es-cn
         cluster-nodes: es-cn.elasticsearch.aliyuncs.com:9300
         username-password: elastic:O9VV8MaBmflV9g
         properties:
            transport.tcp.connect_timeout: 40s
            client.transport.ping_timeout: 10s
            client.transport.nodes_sampler_interval: 5s

配置 java Client連接池

package com.****.****.config;
import com.qdum.contact.common.utils.StringUtils;
import org.elasticsearch.client.transport.TransportClient;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.transport.InetSocketTransportAddress;
import org.elasticsearch.transport.client.PreBuiltTransportClient;
import org.elasticsearch.xpack.client.PreBuiltXPackTransportClient;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.DisposableBean;
import org.springframework.beans.factory.FactoryBean;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Configuration;
import java.net.InetAddress;
import java.net.UnknownHostException;

/**
 *TransportClientFactoryBean
 *
 *@author liuf
 */
@Configuration
public class ElasticsearchConfiguration implements FactoryBean<TransportClient>, InitializingBean, DisposableBean {
    private static final Logger logger = LoggerFactory.getLogger(ElasticsearchConfiguration.class);

    @Value("${spring.data.elasticsearch.cluster-nodes}")
    private String clusterNodes ;

    @Value("${spring.data.elasticsearch.cluster-name}")
    private String clusterName;
    @Value("${spring.data.elasticsearch.username-password}")
    private String usernamePassword;

    /**
     * 超時時間
     */
    @Value("${spring.data.elasticsearch.properties.transport.tcp.connect_timeout}")
    private String connectTimeout;
    /**
     * 等待來自節點的ping響應的時間。默認值爲5s。
     */
    @Value("${spring.data.elasticsearch.properties.client.transport.ping_timeout}")
    private String pingTimeout;
    /**
     * 採樣/ ping列出和連接的節點的頻率。默認值爲5s
     */
    @Value("${spring.data.elasticsearch.properties.client.transport.nodes_sampler_interval}")
    private String nodesSamplerInterval;

    private TransportClient client;

    @Override
    public void destroy() throws Exception {
        try {
            logger.info("Closing elasticSearch client");
            if (client != null) {
                client.close();
            }
        } catch (final Exception e) {
            logger.error("Error closing ElasticSearch client: ", e);
        }
    }

    @Override
    public TransportClient getObject() throws Exception {
        return client;
    }

    @Override
    public Class<TransportClient> getObjectType() {
        return TransportClient.class;
    }

    @Override
    public boolean isSingleton() {
        return false;
    }

    @Override
    public void afterPropertiesSet() throws Exception {
        buildClient();
    }

    protected void buildClient() {

        try {
            //x-pack權限方法
            if (StringUtils.isNotBlank(usernamePassword)) {
                PreBuiltXPackTransportClient preBuiltTransportClient = new PreBuiltXPackTransportClient(settings());
                if (!"".equals(clusterNodes)) {
                    for (String nodes : clusterNodes.split(",")) {
                        String InetSocket[] = nodes.split(":");
                        String Address = InetSocket[0];
                        Integer port = Integer.valueOf(InetSocket[1]);
                        preBuiltTransportClient.addTransportAddress(new InetSocketTransportAddress(InetAddress.getByName(Address), port));
                    }
                    client = preBuiltTransportClient;
//                client.threadPool().getThreadContext().putHeader("Authorization", "Basic "+ Encodes.decodeBase64(usernamePassword));
                }
            } else {
                //沒有x-pack權限訪問
                PreBuiltTransportClient preBuiltTransportClient = new PreBuiltTransportClient(settings());
                if (!"".equals(clusterNodes)) {
                    for (String nodes:clusterNodes.split(",")) {
                        String InetSocket [] = nodes.split(":");
                        String  Address = InetSocket[0];
                        Integer  port = Integer.valueOf(InetSocket[1]);
                        preBuiltTransportClient.addTransportAddress(new InetSocketTransportAddress(InetAddress.getByName(Address),port ));
                    }
                    client = preBuiltTransportClient;
                }
            }
        } catch (UnknownHostException e) {
            logger.error(e.getMessage());
        }

    }

    private Settings settings(){
        Settings.Builder settings = Settings.builder();
        settings.put("cluster.name",clusterName)
//            .put("client.transport.ignore_cluster_name", false)
//            .put("client.transport.sniff", true)
//            .put("xpack.security.transport.ssl.enabled", true)
            .put("client.transport.nodes_sampler_interval", nodesSamplerInterval) // elasticSearch 健康檢查時間
            .put("transport.tcp.connect_timeout", connectTimeout) // elasticSearch 超時時間
            .put("client.transport.ping_timeout",pingTimeout);    //elasticSearch ping
        //x-pack權限方法
        if (StringUtils.isNotBlank(usernamePassword)) {
            settings.put("xpack.security.user", usernamePassword);
        } else {

        }
        return settings.build();
    }

}

####參考文獻
[1] : https://www.mkyong.com/spring-boot/spring-boot-spring-data-elasticsearch-example/