org.springframework.cloud.netflix.ribbon.apache.RibbonLoadBalancingHttpClient.java Source code

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Here is the source code for org.springframework.cloud.netflix.ribbon.apache.RibbonLoadBalancingHttpClient.java

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/*
 * Copyright 2013-2015 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 org.springframework.cloud.netflix.ribbon.apache;

import java.net.URI;

import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.methods.HttpUriRequest;
import org.apache.http.impl.client.HttpClientBuilder;
import org.springframework.cloud.netflix.ribbon.ServerIntrospector;
import org.springframework.cloud.netflix.ribbon.support.AbstractLoadBalancingClient;
import org.springframework.web.util.UriComponentsBuilder;

import com.netflix.client.config.CommonClientConfigKey;
import com.netflix.client.config.IClientConfig;
import com.netflix.loadbalancer.ILoadBalancer;
import com.netflix.loadbalancer.Server;

import static org.springframework.cloud.netflix.ribbon.RibbonUtils.updateToHttpsIfNeeded;

/**
 * @author Christian Lohmann
 */
//TODO: rename (ie new class that extends this in Dalston) to ApacheHttpLoadBalancingClient
public class RibbonLoadBalancingHttpClient
        extends AbstractLoadBalancingClient<RibbonApacheHttpRequest, RibbonApacheHttpResponse, HttpClient> {

    @Deprecated
    public RibbonLoadBalancingHttpClient() {
        super();
    }

    @Deprecated
    public RibbonLoadBalancingHttpClient(final ILoadBalancer lb) {
        super(lb);
    }

    public RibbonLoadBalancingHttpClient(IClientConfig config, ServerIntrospector serverIntrospector) {
        super(config, serverIntrospector);
    }

    public RibbonLoadBalancingHttpClient(HttpClient delegate, IClientConfig config,
            ServerIntrospector serverIntrospector) {
        super(delegate, config, serverIntrospector);
    }

    protected HttpClient createDelegate(IClientConfig config) {
        return HttpClientBuilder.create()
                // already defaults to 0 in builder, so resetting to 0 won't hurt
                .setMaxConnTotal(config.getPropertyAsInteger(CommonClientConfigKey.MaxTotalConnections, 0))
                // already defaults to 0 in builder, so resetting to 0 won't hurt
                .setMaxConnPerRoute(config.getPropertyAsInteger(CommonClientConfigKey.MaxConnectionsPerHost, 0))
                .disableCookieManagement().useSystemProperties() // for proxy
                .build();
    }

    @Override
    public RibbonApacheHttpResponse execute(RibbonApacheHttpRequest request, final IClientConfig configOverride)
            throws Exception {
        final RequestConfig.Builder builder = RequestConfig.custom();
        IClientConfig config = configOverride != null ? configOverride : this.config;
        builder.setConnectTimeout(config.get(CommonClientConfigKey.ConnectTimeout, this.connectTimeout));
        builder.setSocketTimeout(config.get(CommonClientConfigKey.ReadTimeout, this.readTimeout));
        builder.setRedirectsEnabled(config.get(CommonClientConfigKey.FollowRedirects, this.followRedirects));

        final RequestConfig requestConfig = builder.build();

        if (isSecure(configOverride)) {
            final URI secureUri = UriComponentsBuilder.fromUri(request.getUri()).scheme("https").build().toUri();
            request = request.withNewUri(secureUri);
        }

        final HttpUriRequest httpUriRequest = request.toRequest(requestConfig);
        final HttpResponse httpResponse = this.delegate.execute(httpUriRequest);
        return new RibbonApacheHttpResponse(httpResponse, httpUriRequest.getURI());
    }

    @Override
    public URI reconstructURIWithServer(Server server, URI original) {
        URI uri = updateToHttpsIfNeeded(original, this.config, this.serverIntrospector, server);
        return super.reconstructURIWithServer(server, uri);
    }

}