java-insagent-pc/src/main/java/com/ydtech/config/resttemplate/RestTemplateConfig.java

package com.ydtech.config.resttemplate;


import org.apache.http.client.HttpClient;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.config.Registry;
import org.apache.http.config.RegistryBuilder;
import org.apache.http.conn.socket.ConnectionSocketFactory;
import org.apache.http.conn.socket.PlainConnectionSocketFactory;
import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
import org.apache.http.impl.client.DefaultHttpRequestRetryHandler;
import org.apache.http.impl.client.HttpClientBuilder;
import org.apache.http.impl.conn.PoolingHttpClientConnectionManager;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.client.ClientHttpRequestFactory;
import org.springframework.http.client.HttpComponentsClientHttpRequestFactory;
import org.springframework.web.client.RestTemplate;

import java.util.Collections;

@Configuration
public class RestTemplateConfig {
    @Bean
    public RestTemplate restTemplate() {
        RestTemplate restTemplate = new RestTemplate(httpRequestFactory());
        restTemplate.setErrorHandler(new CustomResponseErrorHandler());
        restTemplate.setInterceptors(Collections.singletonList(new RestTemplateRequestInterceptor()));
        return restTemplate;
    }

    @Bean
    public ClientHttpRequestFactory httpRequestFactory() {
        return new HttpComponentsClientHttpRequestFactory(httpClient());
    }

    @Bean
    public HttpClient httpClient() {
        Registry<ConnectionSocketFactory> registry = RegistryBuilder.<ConnectionSocketFactory>create().register("http",
                PlainConnectionSocketFactory.getSocketFactory()).register("https", SSLConnectionSocketFactory.getSocketFactory()).build();
        PoolingHttpClientConnectionManager connectionManager = new PoolingHttpClientConnectionManager(registry);
        //设置整个连接池最大连接数
        connectionManager.setMaxTotal(3000);

        //路由是对maxTotal的细分
        connectionManager.setDefaultMaxPerRoute(100);
        RequestConfig requestConfig = RequestConfig.custom()
                .setSocketTimeout(120000)  //返回数据的超时时间
                .setConnectTimeout(3000) //连接上服务器的超时时间
                .setConnectionRequestTimeout(1000) //从连接池中获取连接的超时时间
                .build();

        return HttpClientBuilder.create()
                .setDefaultRequestConfig(requestConfig)
                .setConnectionManager(connectionManager)
                // 设置重试策略和重试次数
                .setServiceUnavailableRetryStrategy(new RestTemplateServiceUnavailableRetryStrategy())
                .setRetryHandler(new DefaultHttpRequestRetryHandler(3, true))
                .build();
    }

}