基于Springboot构建ES的多客户端
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基于Springboot构建ES的多客户端
有时候我们操作es的时候会有一些特殊的需求,例如需要操作的index使用了不同的es服务器、用户名、密码、参数等,这个时候我们需要使用不同的es的客户端进行操作,但是我们又不希望拆分成多个项目进行使用,这个时候我们就需要在我们的配置中自己构建一套ES的多客户端了。**
pom.xml
首先是我们的pom.xml:
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
<version>2.0.5.RELEASE</version>
</dependency>
<!--es for transport-->
<dependency>
<groupId>org.elasticsearch</groupId>
<artifactId>elasticsearch</artifactId>
<version>5.6.11</version>
</dependency>
<dependency>
<groupId>org.elasticsearch.client</groupId>
<artifactId>elasticsearch-rest-client</artifactId>
<version>5.6.11</version>
</dependency>
<!--es sniffer-->
<dependency>
<groupId>org.elasticsearch.client</groupId>
<artifactId>elasticsearch-rest-client-sniffer</artifactId>
<version>5.6.3</version>
<scope>compile</scope>
</dependency>
<!--es for rest-high-level-client-->
<dependency>
<groupId>org.elasticsearch.client</groupId>
<artifactId>elasticsearch-rest-high-level-client</artifactId>
<version>5.6.11</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>3.4</version>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.2.39</version>
</dependency>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-core</artifactId>
<version>2.9.1</version>
</dependency>
<!-- SpringBoot 热启动 -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-pool2</artifactId>
<version>2.4.2</version>
</dependency>
<dependency>
<groupId>org.elasticsearch.client</groupId>
<artifactId>elasticsearch-rest-client-sniffer</artifactId>
<version>5.6.0</version>
</dependency>
<dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
<version>2.6</version>
</dependency>
</dependencies>
ElasticsearchConfig.java
然后是我们的配置文件,我这里使用的是application.properties的配置文件,因为我们使用不同的信息,所以这里我就不写了,可以根据需求自行获取。
ElasticsearchRestClient.java
import cnkj.site.config.ElasticsearchConfig;
import lombok.extern.slf4j.Slf4j;
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.client.config.RequestConfig;
import org.apache.http.impl.client.BasicCredentialsProvider;
import org.elasticsearch.client.RestClient;
import org.elasticsearch.client.RestClientBuilder;
import org.elasticsearch.client.RestHighLevelClient;
import org.elasticsearch.client.sniff.SniffOnFailureListener;
import org.elasticsearch.client.sniff.Sniffer;
import org.elasticsearch.client.sniff.SnifferBuilder;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
/*
* @version 1.0 created by LXW on 2018/11/22 9:43
*/
@Slf4j
@Configuration
public class ElasticsearchClient {
@Bean(name = "HighESClient")
public RestClient restTomcatClient(ElasticsearchConfig elasticsearchConfig) {
final CredentialsProvider credentialsProvider = new BasicCredentialsProvider();
credentialsProvider.setCredentials(AuthScope.ANY,
//es账号密码
new UsernamePasswordCredentials(elasticsearchConfig.getUsername(), elasticsearchConfig.getPassword()));
//自动扫描网段
//监听同网段服务
//Low Level Client init
RestClientBuilder builder = RestClient.builder(
new HttpHost(
elasticsearchConfig.getHost(),
Integer.valueOf(elasticsearchConfig.getPort()),
elasticsearchConfig.getSchema()
)
).setHttpClientConfigCallback(
httpClientBuilder -> httpClientBuilder.setDefaultCredentialsProvider(credentialsProvider)
).setRequestConfigCallback(new RestClientBuilder.RequestConfigCallback() {
@Override
public RequestConfig.Builder customizeRequestConfig(RequestConfig.Builder builder) {
builder.setConnectTimeout(elasticsearchConfig.getConnectTimeout());
builder.setSocketTimeout(elasticsearchConfig.getSocketTimeout());
return builder;
}
})
.setMaxRetryTimeoutMillis(elasticsearchConfig.getMaxRetryTimeoutMillis());
builder.setMaxRetryTimeoutMillis(elasticsearchConfig.getMaxRetryTimeoutMillis());
SniffOnFailureListener sniffOnFailureListener = new SniffOnFailureListener();
builder.setFailureListener(sniffOnFailureListener);
RestClient lowLevelRestClient = builder.build();
SnifferBuilder snifferBuilder = Sniffer.builder(lowLevelRestClient).setSniffIntervalMillis(elasticsearchConfig.getSnifferinterval());
if (elasticsearchConfig.getFailuredelay() > 0) {
snifferBuilder.setSniffAfterFailureDelayMillis(elasticsearchConfig.getFailuredelay());
}
sniffOnFailureListener.setSniffer(snifferBuilder.build());
return lowLevelRestClient;
}
@Bean(name = "HighLevelESClient")
public RestHighLevelClient restHighLevelClient(@Qualifier("HighESClient") RestClient restClient) {
return new RestHighLevelClient(restClient);
}
}
最终
在需要使用的地方直接通过注入的方式使用不同的客户端
@Resource(name = "HighLevelESClient")
private RestHighLevelClient client;
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