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

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Here is the source code for org.springframework.cloud.netflix.ribbon.apache.RibbonLoadBalancingHttpClientTests.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 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.conn.PoolingHttpClientConnectionManager;
import org.junit.Test;
import org.mockito.ArgumentCaptor;
import org.springframework.cloud.netflix.ribbon.RibbonAutoConfiguration;
import org.springframework.cloud.netflix.ribbon.SpringClientFactory;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.test.util.ReflectionTestUtils;

import com.netflix.client.config.CommonClientConfigKey;
import com.netflix.client.config.DefaultClientConfigImpl;
import com.netflix.client.config.IClientConfig;

import static org.hamcrest.Matchers.is;
import static org.junit.Assert.assertThat;
import static org.mockito.BDDMockito.given;
import static org.mockito.Matchers.any;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.verify;

/**
 * @author Sbastien Nussbaumer
 */
public class RibbonLoadBalancingHttpClientTests {

    @Test
    public void testRequestConfigUseDefaultsNoOverride() throws Exception {
        RequestConfig result = getBuiltRequestConfig(UseDefaults.class, null);

        assertThat(result.isRedirectsEnabled(), is(false));
    }

    @Test
    public void testRequestConfigDoNotFollowRedirectsNoOverride() throws Exception {
        RequestConfig result = getBuiltRequestConfig(DoNotFollowRedirects.class, null);

        assertThat(result.isRedirectsEnabled(), is(false));
    }

    @Test
    public void testRequestConfigFollowRedirectsNoOverride() throws Exception {
        RequestConfig result = getBuiltRequestConfig(FollowRedirects.class, null);

        assertThat(result.isRedirectsEnabled(), is(true));
    }

    @Test
    public void testTimeouts() throws Exception {
        RequestConfig result = getBuiltRequestConfig(Timeouts.class, null);
        assertThat(result.getConnectTimeout(), is(60000));
        assertThat(result.getSocketTimeout(), is(50000));
    }

    @Test
    public void testConnections() throws Exception {
        SpringClientFactory factory = new SpringClientFactory();
        factory.setApplicationContext(
                new AnnotationConfigApplicationContext(RibbonAutoConfiguration.class, Connections.class));
        RibbonLoadBalancingHttpClient client = factory.getClient("service", RibbonLoadBalancingHttpClient.class);

        HttpClient delegate = client.getDelegate();
        PoolingHttpClientConnectionManager connManager = (PoolingHttpClientConnectionManager) ReflectionTestUtils
                .getField(delegate, "connManager");
        assertThat(connManager.getMaxTotal(), is(101));
        assertThat(connManager.getDefaultMaxPerRoute(), is(201));
    }

    @Test
    public void testRequestConfigDoNotFollowRedirectsOverrideWithFollowRedirects() throws Exception {

        DefaultClientConfigImpl override = new DefaultClientConfigImpl();
        override.set(CommonClientConfigKey.FollowRedirects, true);
        override.set(CommonClientConfigKey.IsSecure, false);

        RequestConfig result = getBuiltRequestConfig(DoNotFollowRedirects.class, override);

        assertThat(result.isRedirectsEnabled(), is(true));
    }

    @Test
    public void testRequestConfigFollowRedirectsOverrideWithDoNotFollowRedirects() throws Exception {

        DefaultClientConfigImpl override = new DefaultClientConfigImpl();
        override.set(CommonClientConfigKey.FollowRedirects, false);
        override.set(CommonClientConfigKey.IsSecure, false);

        RequestConfig result = getBuiltRequestConfig(FollowRedirects.class, override);

        assertThat(result.isRedirectsEnabled(), is(false));
    }

    @Test
    public void testUpdatedTimeouts() throws Exception {
        SpringClientFactory factory = new SpringClientFactory();
        RequestConfig result = getBuiltRequestConfig(Timeouts.class, null, factory);
        assertThat(result.getConnectTimeout(), is(60000));
        assertThat(result.getSocketTimeout(), is(50000));
        IClientConfig config = factory.getClientConfig("service");
        config.set(CommonClientConfigKey.ConnectTimeout, 60);
        config.set(CommonClientConfigKey.ReadTimeout, 50);
        result = getBuiltRequestConfig(Timeouts.class, null, factory);
        assertThat(result.getConnectTimeout(), is(60));
        assertThat(result.getSocketTimeout(), is(50));
    }

    @Configuration
    protected static class UseDefaults {

    }

    @Configuration
    protected static class FollowRedirects {
        @Bean
        public IClientConfig clientConfig() {
            DefaultClientConfigImpl config = new DefaultClientConfigImpl();
            config.set(CommonClientConfigKey.FollowRedirects, true);
            return config;
        }
    }

    @Configuration
    protected static class DoNotFollowRedirects {
        @Bean
        public IClientConfig clientConfig() {
            DefaultClientConfigImpl config = new DefaultClientConfigImpl();
            config.set(CommonClientConfigKey.FollowRedirects, false);
            return config;
        }
    }

    @Configuration
    protected static class Timeouts {
        @Bean
        public IClientConfig clientConfig() {
            DefaultClientConfigImpl config = new DefaultClientConfigImpl();
            config.set(CommonClientConfigKey.ConnectTimeout, 60000);
            config.set(CommonClientConfigKey.ReadTimeout, 50000);
            return config;
        }
    }

    @Configuration
    protected static class Connections {
        @Bean
        public IClientConfig clientConfig() {
            DefaultClientConfigImpl config = new DefaultClientConfigImpl();
            config.set(CommonClientConfigKey.MaxTotalConnections, 101);
            config.set(CommonClientConfigKey.MaxConnectionsPerHost, 201);
            return config;
        }
    }

    private RequestConfig getBuiltRequestConfig(Class<?> defaultConfigurationClass, IClientConfig configOverride)
            throws Exception {
        return getBuiltRequestConfig(defaultConfigurationClass, configOverride, new SpringClientFactory());
    }

    private RequestConfig getBuiltRequestConfig(Class<?> defaultConfigurationClass, IClientConfig configOverride,
            SpringClientFactory factory) throws Exception {

        factory.setApplicationContext(
                new AnnotationConfigApplicationContext(RibbonAutoConfiguration.class, defaultConfigurationClass));
        HttpClient delegate = mock(HttpClient.class);
        RibbonLoadBalancingHttpClient client = factory.getClient("service", RibbonLoadBalancingHttpClient.class);

        ReflectionTestUtils.setField(client, "delegate", delegate);
        given(delegate.execute(any(HttpUriRequest.class))).willReturn(mock(HttpResponse.class));
        RibbonApacheHttpRequest request = mock(RibbonApacheHttpRequest.class);
        given(request.toRequest(any(RequestConfig.class))).willReturn(mock(HttpUriRequest.class));

        client.execute(request, configOverride);

        ArgumentCaptor<RequestConfig> requestConfigCaptor = ArgumentCaptor.forClass(RequestConfig.class);
        verify(request).toRequest(requestConfigCaptor.capture());
        return requestConfigCaptor.getValue();
    }

}