io.jmnarloch.spring.request.correlation.http.ClientHttpCorrelationConfiguration.java Source code

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Here is the source code for io.jmnarloch.spring.request.correlation.http.ClientHttpCorrelationConfiguration.java

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/**
 * Copyright (c) 2015 the original author or authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package io.jmnarloch.spring.request.correlation.http;

import io.jmnarloch.spring.request.correlation.support.RequestCorrelationProperties;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.client.ClientHttpRequestInterceptor;
import org.springframework.http.client.support.InterceptingHttpAccessor;

import java.util.ArrayList;
import java.util.List;

/**
 * Configures any {@link org.springframework.web.client.RestTemplate} bean by adding additional request interceptor.
 *
 * @author Jakub Narloch
 */
@Configuration
@ConditionalOnClass(InterceptingHttpAccessor.class)
@ConditionalOnProperty(value = "request.correlation.client.http.enabled", matchIfMissing = true)
public class ClientHttpCorrelationConfiguration {

    @Autowired(required = false)
    private List<InterceptingHttpAccessor> clients = new ArrayList<>();

    @Bean
    public InitializingBean clientsCorrelationInitializer(final RequestCorrelationProperties properties) {

        return new InitializingBean() {
            @Override
            public void afterPropertiesSet() throws Exception {

                if (clients != null) {
                    for (InterceptingHttpAccessor client : clients) {
                        final List<ClientHttpRequestInterceptor> interceptors = new ArrayList<>(
                                client.getInterceptors());
                        interceptors.add(new ClientHttpRequestCorrelationInterceptor(properties));
                        client.setInterceptors(interceptors);
                    }
                }
            }
        };
    }
}