HttpClientConfig.java

package com.checkout.paymentgw.payment.config;

import org.springframework.boot.web.client.RestClientCustomizer;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.client.SimpleClientHttpRequestFactory;
import org.springframework.web.client.RestClient;

import java.time.Duration;

@Configuration
public class HttpClientConfig {

    @Bean
    RestClient.Builder restClientBuilder() {
        SimpleClientHttpRequestFactory factory = new SimpleClientHttpRequestFactory();
        factory.setConnectTimeout((int) Duration.ofSeconds(2).toMillis());
        factory.setReadTimeout((int) Duration.ofSeconds(5).toMillis());
        return RestClient.builder().requestFactory(factory);
    }

    @Bean
    RestClientCustomizer restClientCustomizer() {
        return builder -> builder.defaultHeader("X-Source-Service", "payment-service");
    }
}