an Apache http client zuul ribbon command

This is an implementation of a RibbonCommand and a factory which makes
use of a loadbalancing http client based on apache's http-components
http-client.
With this command/factory it is possible to route PATCH http requests
via zuul/ribbon as well.

fixes gh-412

spring-cloud-netflix-core/src/main/java/org/springframework/cloud/netflix/ribbon/apache/RibbonApacheHttpRequest.java

@@ -0,0 +1,92 @@
+/*
+ * 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.io.InputStream;
+import java.net.URI;
+import java.util.List;
+
+import org.apache.http.client.config.RequestConfig;
+import org.apache.http.client.methods.HttpUriRequest;
+import org.apache.http.client.methods.RequestBuilder;
+import org.apache.http.entity.BasicHttpEntity;
+import org.springframework.util.MultiValueMap;
+
+import com.netflix.client.ClientRequest;
+
+import lombok.Getter;
+
+/**
+ * @author Christian Lohmann
+ */
+@Getter
+public class RibbonApacheHttpRequest extends ClientRequest implements Cloneable {
+
+	private final String method;
+
+	private final MultiValueMap<String, String> headers;
+
+	private final MultiValueMap<String, String> params;
+
+	private final InputStream requestEntity;
+
+	public RibbonApacheHttpRequest(final String method, final URI uri,
+			final Boolean retryable, final MultiValueMap<String, String> headers,
+			final MultiValueMap<String, String> params, final InputStream requestEntity) {
+
+		this.method = method;
+		this.uri = uri;
+		this.isRetriable = retryable;
+		this.headers = headers;
+		this.params = params;
+		this.requestEntity = requestEntity;
+	}
+
+	public HttpUriRequest toRequest(final RequestConfig requestConfig) {
+		final RequestBuilder builder = RequestBuilder.create(this.method);
+		builder.setUri(this.uri);
+		for (final String name : this.headers.keySet()) {
+			final List<String> values = this.headers.get(name);
+			for (final String value : values) {
+				builder.addHeader(name, value);
+			}
+		}
+
+		for (final String name : this.params.keySet()) {
+			final List<String> values = this.params.get(name);
+			for (final String value : values) {
+				builder.addParameter(name, value);
+			}
+		}
+
+		if (this.requestEntity != null) {
+			final BasicHttpEntity entity;
+			entity = new BasicHttpEntity();
+			entity.setContent(this.requestEntity);
+			builder.setEntity(entity);
+		}
+
+		builder.setConfig(requestConfig);
+		return builder.build();
+	}
+
+	public RibbonApacheHttpRequest withNewUri(final URI uri) {
+		return new RibbonApacheHttpRequest(this.method, uri, this.isRetriable,
+				this.headers, this.params, this.requestEntity);
+	}
+
+}

spring-cloud-netflix-core/src/main/java/org/springframework/cloud/netflix/ribbon/apache/RibbonApacheHttpResponse.java

@@ -0,0 +1,161 @@
+/*
+ * 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.io.IOException;
+import java.io.InputStream;
+import java.lang.reflect.Type;
+import java.net.URI;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import org.apache.http.Header;
+import org.apache.http.HttpResponse;
+
+import com.google.common.reflect.TypeToken;
+import com.netflix.client.ClientException;
+import com.netflix.client.http.CaseInsensitiveMultiMap;
+import com.netflix.client.http.HttpHeaders;
+
+/**
+ * @author Christian Lohmann
+ */
+public class RibbonApacheHttpResponse implements com.netflix.client.http.HttpResponse {
+
+	private HttpResponse httpResponse;
+	private URI uri;
+
+	public RibbonApacheHttpResponse(final HttpResponse httpResponse, final URI uri) {
+		this.httpResponse = httpResponse;
+		this.uri = uri;
+	}
+
+	@Override
+	public Object getPayload() throws ClientException {
+		try {
+			return this.httpResponse.getEntity().getContent();
+		}
+		catch (final IOException e) {
+			throw new ClientException(e.getMessage(), e);
+		}
+	}
+
+	@Override
+	public boolean hasPayload() {
+		return this.httpResponse.getEntity() != null;
+	}
+
+	@Override
+	public boolean isSuccess() {
+		return this.httpResponse.getStatusLine().getStatusCode() == 200;
+	}
+
+	@Override
+	public URI getRequestedURI() {
+		return this.uri;
+	}
+
+	public int getStatus() {
+		return httpResponse.getStatusLine().getStatusCode();
+	}
+
+	public String getStatusLine() {
+		return httpResponse.getStatusLine().toString();
+	}
+
+	@Override
+	public Map<String, Collection<String>> getHeaders() {
+		final Map<String, Collection<String>> headers = new HashMap<>();
+		for (final Header header : this.httpResponse.getAllHeaders()) {
+			if (headers.containsKey(header.getName())) {
+				headers.get(header.getName()).add(header.getValue());
+			}
+			else {
+				final List<String> values = new ArrayList<>();
+				values.add(header.getValue());
+				headers.put(header.getName(), values);
+			}
+		}
+
+		return headers;
+	}
+
+	@Override
+	public HttpHeaders getHttpHeaders() {
+		final CaseInsensitiveMultiMap headers = new CaseInsensitiveMultiMap();
+		for (final Header header : httpResponse.getAllHeaders()) {
+			headers.addHeader(header.getName(), header.getValue());
+		}
+
+		return headers;
+	}
+
+	@Override
+	public void close() {
+		if (this.httpResponse != null && this.httpResponse.getEntity() != null) {
+			try {
+				this.httpResponse.getEntity().getContent().close();
+			}
+			catch (final IOException e) {
+				throw new RuntimeException(e.getMessage(), e);
+			}
+		}
+
+	}
+
+	@Override
+	public InputStream getInputStream() {
+		try {
+			return this.httpResponse.getEntity().getContent();
+		}
+		catch (final IOException e) {
+			throw new RuntimeException(e.getMessage(), e);
+		}
+	}
+
+	@Override
+	public boolean hasEntity() {
+		return hasPayload();
+	}
+
+	/**
+	 * Not used
+	 */
+	@Override
+	public <T> T getEntity(final Class<T> type) throws Exception {
+		return null;
+	}
+
+	/**
+	 * Not used
+	 */
+	@Override
+	public <T> T getEntity(final Type type) throws Exception {
+		return null;
+	}
+
+	/**
+	 * Not used
+	 */
+	@Override
+	public <T> T getEntity(final TypeToken<T> type) throws Exception {
+		return null;
+	}
+}

spring-cloud-netflix-core/src/main/java/org/springframework/cloud/netflix/ribbon/apache/RibbonLoadBalancingHttpClient.java

@@ -0,0 +1,115 @@
+/*
+ * 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.web.util.UriComponentsBuilder;
+
+import com.netflix.client.AbstractLoadBalancerAwareClient;
+import com.netflix.client.RequestSpecificRetryHandler;
+import com.netflix.client.RetryHandler;
+import com.netflix.client.config.CommonClientConfigKey;
+import com.netflix.client.config.IClientConfig;
+import com.netflix.loadbalancer.ILoadBalancer;
+
+import lombok.Setter;
+
+/**
+ * @author Christian Lohmann
+ */
+public class RibbonLoadBalancingHttpClient
+		extends AbstractLoadBalancerAwareClient<RibbonApacheHttpRequest, RibbonApacheHttpResponse> {
+	private final HttpClient delegate = HttpClientBuilder.create().build();
+
+	@Setter
+	private int connectTimeout;
+
+	@Setter
+	private int readTimeout;
+
+	@Setter
+	private boolean secure;
+
+	@Setter
+	private IClientConfig clientConfig;
+
+	public RibbonLoadBalancingHttpClient() {
+		super(null);
+		this.setRetryHandler(RetryHandler.DEFAULT);
+	}
+
+	public RibbonLoadBalancingHttpClient(final ILoadBalancer lb) {
+		super(lb);
+		this.setRetryHandler(RetryHandler.DEFAULT);
+	}
+
+	@Override
+	public RequestSpecificRetryHandler getRequestSpecificRetryHandler(
+			final RibbonApacheHttpRequest request, final IClientConfig requestConfig) {
+		if (this.clientConfig.get(CommonClientConfigKey.OkToRetryOnAllOperations, false)) {
+			return new RequestSpecificRetryHandler(true, true, this.getRetryHandler(),
+					requestConfig);
+		}
+
+		if (!request.getMethod().equals("GET")) {
+			return new RequestSpecificRetryHandler(true, false, this.getRetryHandler(),
+					requestConfig);
+		}
+		else {
+			return new RequestSpecificRetryHandler(true, true, this.getRetryHandler(),
+					requestConfig);
+		}
+	}
+
+	@Override
+	public RibbonApacheHttpResponse execute(RibbonApacheHttpRequest request,
+			final IClientConfig configOverride) throws Exception {
+		final RequestConfig.Builder builder = RequestConfig.custom();
+		if (configOverride != null) {
+			builder.setConnectTimeout(configOverride.get(
+					CommonClientConfigKey.ConnectTimeout, this.connectTimeout));
+			builder.setConnectionRequestTimeout(configOverride.get(
+					CommonClientConfigKey.ReadTimeout, this.readTimeout));
+		}
+		else {
+			builder.setConnectTimeout(this.connectTimeout);
+			builder.setConnectionRequestTimeout(this.readTimeout);
+		}
+
+		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());
+	}
+
+	private boolean isSecure(final IClientConfig config) {
+		return (config != null) ? config.get(CommonClientConfigKey.IsSecure) : secure;
+	}
+}

spring-cloud-netflix-core/src/main/java/org/springframework/cloud/netflix/zuul/filters/route/apache/HttpClientRibbonCommand.java

@@ -0,0 +1,123 @@
+/*
+ * 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.zuul.filters.route.apache;
+
+import java.io.InputStream;
+import java.net.URI;
+
+import org.springframework.cloud.netflix.ribbon.RibbonHttpResponse;
+import org.springframework.cloud.netflix.ribbon.apache.RibbonApacheHttpRequest;
+import org.springframework.cloud.netflix.ribbon.apache.RibbonApacheHttpResponse;
+import org.springframework.cloud.netflix.ribbon.apache.RibbonLoadBalancingHttpClient;
+import org.springframework.cloud.netflix.zuul.filters.route.RibbonCommand;
+import org.springframework.http.client.ClientHttpResponse;
+import org.springframework.util.MultiValueMap;
+
+import com.netflix.config.DynamicIntProperty;
+import com.netflix.config.DynamicPropertyFactory;
+import com.netflix.hystrix.HystrixCommand;
+import com.netflix.hystrix.HystrixCommandGroupKey;
+import com.netflix.hystrix.HystrixCommandKey;
+import com.netflix.hystrix.HystrixCommandProperties;
+import com.netflix.zuul.constants.ZuulConstants;
+import com.netflix.zuul.context.RequestContext;
+
+/**
+ * @author Christian Lohmann
+ */
+public class HttpClientRibbonCommand extends HystrixCommand<ClientHttpResponse> implements
+		RibbonCommand {
+
+	private final RibbonLoadBalancingHttpClient client;
+	private final String method;
+	private final String uri;
+	private final MultiValueMap<String, String> headers;
+	private final MultiValueMap<String, String> params;
+	private final InputStream requestEntity;
+	private final Boolean retryable;
+
+	public HttpClientRibbonCommand(final RibbonLoadBalancingHttpClient client,
+			final String method, final String uri,
+			final MultiValueMap<String, String> headers,
+			final MultiValueMap<String, String> params, final InputStream requestEntity,
+			final Boolean retryable) {
+		this("default", client, method, uri, headers, params, requestEntity, retryable);
+	}
+
+	public HttpClientRibbonCommand(final String commandKey,
+			final RibbonLoadBalancingHttpClient client, final String method,
+			final String uri, final MultiValueMap<String, String> headers,
+			final MultiValueMap<String, String> params, final InputStream requestEntity,
+			final Boolean retryable) {
+		super(getSetter(commandKey));
+		this.client = client;
+		this.method = method;
+		this.uri = uri;
+		this.headers = headers;
+		this.params = params;
+		this.requestEntity = requestEntity;
+		this.retryable = retryable;
+	}
+
+	protected static Setter getSetter(final String commandKey) {
+
+		// we want to default to semaphore-isolation since this wraps
+		// 2 others commands that are already thread isolated
+		final String name = ZuulConstants.ZUUL_EUREKA + commandKey
+				+ ".semaphore.maxSemaphores";
+		final DynamicIntProperty value = DynamicPropertyFactory.getInstance()
+				.getIntProperty(name, 100);
+		final HystrixCommandProperties.Setter setter = HystrixCommandProperties
+				.Setter()
+				.withExecutionIsolationStrategy(
+						HystrixCommandProperties.ExecutionIsolationStrategy.SEMAPHORE)
+				.withExecutionIsolationSemaphoreMaxConcurrentRequests(value.get());
+		return Setter
+				.withGroupKey(HystrixCommandGroupKey.Factory.asKey("RibbonCommand"))
+				.andCommandKey(
+						HystrixCommandKey.Factory.asKey(commandKey + "RibbonCommand"))
+				.andCommandPropertiesDefaults(setter);
+	}
+
+	@Override
+	protected ClientHttpResponse run() throws Exception {
+		return forward();
+	}
+
+	protected ClientHttpResponse forward() throws Exception {
+		final RequestContext context = RequestContext.getCurrentContext();
+		URI uriInstance = new URI(this.uri);
+		RibbonApacheHttpRequest request = new RibbonApacheHttpRequest(this.method,
+				uriInstance, this.retryable, this.headers, this.params,
+				this.requestEntity);
+		final RibbonApacheHttpResponse response = this.client
+				.executeWithLoadBalancer(request);
+		context.set("ribbonResponse", response);
+
+		// Explicitly close the HttpResponse if the Hystrix command timed out to
+		// release the underlying HTTP connection held by the response.
+		//
+		if (this.isResponseTimedOut()) {
+			if (response != null) {
+				response.close();
+			}
+		}
+
+		return new RibbonHttpResponse(response);
+	}
+
+}

spring-cloud-netflix-core/src/main/java/org/springframework/cloud/netflix/zuul/filters/route/apache/HttpClientRibbonCommandFactory.java

@@ -0,0 +1,49 @@
+/*
+ * 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.zuul.filters.route.apache;
+
+import org.springframework.cloud.netflix.ribbon.SpringClientFactory;
+import org.springframework.cloud.netflix.ribbon.apache.RibbonLoadBalancingHttpClient;
+import org.springframework.cloud.netflix.zuul.filters.route.RibbonCommandContext;
+import org.springframework.cloud.netflix.zuul.filters.route.RibbonCommandFactory;
+
+import lombok.RequiredArgsConstructor;
+
+/**
+ * @author Christian Lohmann
+ */
+@RequiredArgsConstructor
+public class HttpClientRibbonCommandFactory implements
+		RibbonCommandFactory<HttpClientRibbonCommand> {
+
+	private final SpringClientFactory clientFactory;
+
+	@Override
+	public HttpClientRibbonCommand create(final RibbonCommandContext context) {
+		final String serviceId = context.getServiceId();
+		final RibbonLoadBalancingHttpClient client = clientFactory.getClient(serviceId,
+				RibbonLoadBalancingHttpClient.class);
+		client.setLoadBalancer(this.clientFactory.getLoadBalancer(serviceId));
+		client.setClientConfig(this.clientFactory.getClientConfig(serviceId));
+
+		final HttpClientRibbonCommand httpClientRibbonCommand = new HttpClientRibbonCommand(
+				serviceId, client, context.getVerb(), context.getUri(),
+				context.getHeaders(), context.getParams(), context.getRequestEntity(),
+				context.getRetryable());
+		return httpClientRibbonCommand;
+	}
+}

spring-cloud-netflix-core/src/test/java/org/springframework/cloud/netflix/zuul/SampleZuulProxyAppTestsWithHttpClient.java

@@ -0,0 +1,339 @@
+/*
+ * 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.zuul;
+
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
+import org.springframework.boot.test.IntegrationTest;
+import org.springframework.boot.test.SpringApplicationConfiguration;
+import org.springframework.boot.test.TestRestTemplate;
+import org.springframework.cloud.netflix.ribbon.RibbonClient;
+import org.springframework.cloud.netflix.ribbon.RibbonClients;
+import org.springframework.cloud.netflix.ribbon.SpringClientFactory;
+import org.springframework.cloud.netflix.zuul.filters.ProxyRouteLocator;
+import org.springframework.cloud.netflix.zuul.filters.ZuulProperties;
+import org.springframework.cloud.netflix.zuul.filters.route.RibbonCommandFactory;
+import org.springframework.cloud.netflix.zuul.filters.route.apache.HttpClientRibbonCommandFactory;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.http.HttpEntity;
+import org.springframework.http.HttpMethod;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.test.annotation.DirtiesContext;
+import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
+import org.springframework.test.context.web.WebAppConfiguration;
+import org.springframework.util.MultiValueMap;
+import org.springframework.web.bind.annotation.PathVariable;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestMethod;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+import com.netflix.zuul.ZuulFilter;
+import com.netflix.zuul.context.RequestContext;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertTrue;
+
+@RunWith(SpringJUnit4ClassRunner.class)
+@SpringApplicationConfiguration(classes = SampleHttpClientZuulProxyApplication.class)
+@WebAppConfiguration
+@IntegrationTest({ "server.port: 0",
+		"zuul.routes.other: /test/**=http://localhost:7777/local",
+		"zuul.routes.another: /another/twolevel/**", "zuul.routes.simple: /simple/**" })
+@DirtiesContext
+public class SampleZuulProxyAppTestsWithHttpClient {
+
+	@Value("${local.server.port}")
+	private int port;
+
+	@Autowired
+	private ProxyRouteLocator routes;
+
+	@Autowired
+	private RoutesEndpoint endpoint;
+
+	@Autowired
+	private RibbonCommandFactory ribbonCommandFactory;
+
+	@Test
+	public void bindRouteUsingPhysicalRoute() {
+		assertEquals("http://localhost:7777/local",
+				this.routes.getRoutes().get("/test/**"));
+	}
+
+	@Test
+	public void bindRouteUsingOnlyPath() {
+		assertEquals("simple", this.routes.getRoutes().get("/simple/**"));
+	}
+
+	@Test
+	public void getOnSelfViaRibbonRoutingFilter() {
+		ResponseEntity<String> result = new TestRestTemplate().exchange(
+				"http://localhost:" + this.port + "/simple/local/1", HttpMethod.GET,
+				new HttpEntity<>((Void) null), String.class);
+		assertEquals(HttpStatus.OK, result.getStatusCode());
+		assertEquals("Gotten 1!", result.getBody());
+	}
+
+	@Test
+	public void patchOnSelfViaRibbonRoutingFilter() {
+		ResponseEntity<String> result = new TestRestTemplate().exchange(
+				"http://localhost:" + this.port + "/simple/local/1", HttpMethod.PATCH,
+				new HttpEntity<>("TestPatch"), String.class);
+		assertEquals(HttpStatus.OK, result.getStatusCode());
+		assertEquals("Patched 1!", result.getBody());
+	}
+
+	@Test
+	public void postOnSelfViaRibbonRoutingFilter() {
+		ResponseEntity<String> result = new TestRestTemplate().exchange(
+				"http://localhost:" + this.port + "/simple/local/1", HttpMethod.POST,
+				new HttpEntity<>("TestPost"), String.class);
+		assertEquals(HttpStatus.OK, result.getStatusCode());
+		assertEquals("Posted 1!", result.getBody());
+	}
+
+	@Test
+	public void deleteOnSelfViaRibbonRoutingFilter() {
+		ResponseEntity<String> result = new TestRestTemplate().exchange(
+				"http://localhost:" + this.port + "/simple/local/1", HttpMethod.DELETE,
+				new HttpEntity<>((Void) null), String.class);
+		assertEquals(HttpStatus.OK, result.getStatusCode());
+		assertEquals("Deleted 1!", result.getBody());
+	}
+
+	@Test
+	public void deleteOnSelfViaSimpleHostRoutingFilter() {
+		this.routes.addRoute("/self/**", "http://localhost:" + this.port + "/local");
+		this.endpoint.reset();
+
+		ResponseEntity<String> result = new TestRestTemplate().exchange(
+				"http://localhost:" + this.port + "/self/1", HttpMethod.DELETE,
+				new HttpEntity<>((Void) null), String.class);
+		assertEquals(HttpStatus.OK, result.getStatusCode());
+		assertEquals("Deleted 1!", result.getBody());
+	}
+
+	@Test
+	public void patchOnSelfViaSimpleHostRoutingFilter() {
+		this.routes.addRoute("/self/**", "http://localhost:" + this.port + "/local");
+		this.endpoint.reset();
+
+		ResponseEntity<String> result = new TestRestTemplate().exchange(
+				"http://localhost:" + this.port + "/self/1", HttpMethod.PATCH,
+				new HttpEntity<>("TestPatch"), String.class);
+		assertEquals(HttpStatus.OK, result.getStatusCode());
+		assertEquals("Patched 1!", result.getBody());
+	}
+
+	@Test
+	public void stripPrefixFalseAppendsPath() {
+		this.routes.addRoute(new ZuulProperties.ZuulRoute("strip", "/strip/**", "strip",
+				"http://localhost:" + this.port + "/local", false, false));
+		this.endpoint.reset();
+
+		ResponseEntity<String> result = new TestRestTemplate().exchange(
+				"http://localhost:" + this.port + "/strip", HttpMethod.GET,
+				new HttpEntity<>((Void) null), String.class);
+		assertEquals(HttpStatus.OK, result.getStatusCode());
+
+		// Prefix not stripped to it goes to /local/strip
+		assertEquals("Gotten strip!", result.getBody());
+	}
+
+	@Test
+	public void testNotFound() {
+		ResponseEntity<String> result = new TestRestTemplate().exchange(
+				"http://localhost:" + this.port + "/myinvalidpath", HttpMethod.GET,
+				new HttpEntity<>((Void) null), String.class);
+		assertEquals(HttpStatus.NOT_FOUND, result.getStatusCode());
+	}
+
+	@Test
+	public void getSecondLevel() {
+		ResponseEntity<String> result = new TestRestTemplate().exchange(
+				"http://localhost:" + this.port + "/another/twolevel/local/1",
+				HttpMethod.GET, new HttpEntity<>((Void) null), String.class);
+		assertEquals(HttpStatus.OK, result.getStatusCode());
+		assertEquals("Gotten 1!", result.getBody());
+	}
+
+	@Test
+	public void ribbonRouteWithSpace() {
+		ResponseEntity<String> result = new TestRestTemplate().exchange(
+				"http://localhost:" + this.port + "/simple/spa ce", HttpMethod.GET,
+				new HttpEntity<>((Void) null), String.class);
+		assertEquals(HttpStatus.OK, result.getStatusCode());
+		assertEquals("Hello space", result.getBody());
+	}
+
+	@Test
+	public void simpleHostRouteWithSpace() {
+		routes.addRoute("/self/**", "http://localhost:" + this.port);
+		this.endpoint.reset();
+
+		ResponseEntity<String> result = new TestRestTemplate().exchange(
+				"http://localhost:" + this.port + "/self/spa ce", HttpMethod.GET,
+				new HttpEntity<>((Void) null), String.class);
+		assertEquals(HttpStatus.OK, result.getStatusCode());
+		assertEquals("Hello space", result.getBody());
+	}
+
+	@Test
+	public void simpleHostRouteWithOriginalQString() {
+		routes.addRoute("/self/**", "http://localhost:" + this.port);
+		this.endpoint.reset();
+
+		ResponseEntity<String> result = new TestRestTemplate().exchange(
+				"http://localhost:" + this.port
+						+ "/self/qstring?original=value1&original=value2",
+				HttpMethod.GET, new HttpEntity<>((Void) null), String.class);
+		assertEquals(HttpStatus.OK, result.getStatusCode());
+		assertEquals("Received {original=[value1, value2]}", result.getBody());
+	}
+
+	@Test
+	public void simpleHostRouteWithOverriddenQString() {
+		routes.addRoute("/self/**", "http://localhost:" + this.port);
+		this.endpoint.reset();
+
+		ResponseEntity<String> result = new TestRestTemplate().exchange(
+				"http://localhost:" + this.port
+						+ "/self/qstring?override=true&different=key", HttpMethod.GET,
+				new HttpEntity<>((Void) null), String.class);
+		assertEquals(HttpStatus.OK, result.getStatusCode());
+		assertEquals("Received {key=[overridden]}", result.getBody());
+	}
+
+	@Test
+	public void ribbonCommandFactoryOverridden() {
+		assertTrue("ribbonCommandFactory not a MyRibbonCommandFactory",
+				ribbonCommandFactory instanceof HttpClientRibbonCommandFactory);
+	}
+
+}
+
+// Don't use @SpringBootApplication because we don't want to component scan
+@Configuration
+@EnableAutoConfiguration
+@RestController
+@EnableZuulProxy
+@RibbonClients({
+		@RibbonClient(name = "simple", configuration = SimpleRibbonClientConfiguration.class),
+		@RibbonClient(name = "another", configuration = AnotherRibbonClientConfiguration.class) })
+class SampleHttpClientZuulProxyApplication {
+
+	public static void main(final String[] args) {
+		SpringApplication.run(SampleZuulProxyApplication.class, args);
+	}
+
+	@RequestMapping("/testing123")
+	public String testing123() {
+		throw new RuntimeException("myerror");
+	}
+
+	@RequestMapping("/local")
+	public String local() {
+		return "Hello local";
+	}
+
+	@RequestMapping(value = "/local/{id}", method = RequestMethod.DELETE)
+	public String delete(@PathVariable final String id) {
+		return "Deleted " + id + "!";
+	}
+
+	@RequestMapping(value = "/local/{id}", method = RequestMethod.PATCH)
+	public String patch(@PathVariable final String id, @RequestBody final String body) {
+		return "Patched " + id + "!";
+	}
+
+	@RequestMapping(value = "/local/{id}", method = RequestMethod.GET)
+	public String get(@PathVariable final String id) {
+		return "Gotten " + id + "!";
+	}
+
+	@RequestMapping(value = "/local/{id}", method = RequestMethod.POST)
+	public String post(@PathVariable final String id, @RequestBody final String body) {
+		return "Posted " + id + "!";
+	}
+
+	@RequestMapping(value = "/qstring")
+	public String qstring(@RequestParam final MultiValueMap<String, String> params) {
+		return "Received " + params.toString();
+	}
+
+	@RequestMapping("/")
+	public String home() {
+		return "Hello world";
+	}
+
+	@RequestMapping("/spa ce")
+	public String space() {
+		return "Hello space";
+	}
+
+	@Bean
+	public RibbonCommandFactory ribbonCommandFactory(
+			final SpringClientFactory clientFactory) {
+		return new HttpClientRibbonCommandFactory(clientFactory);
+	}
+
+	@Bean
+	public ZuulFilter sampleFilter() {
+		return new ZuulFilter() {
+			@Override
+			public String filterType() {
+				return "pre";
+			}
+
+			@Override
+			public boolean shouldFilter() {
+				return true;
+			}
+
+			@Override
+			public Object run() {
+				if (RequestContext.getCurrentContext().getRequest().getParameterMap()
+						.containsKey("override")) {
+					Map<String, List<String>> overridden = new HashMap<>();
+					overridden.put("key", Arrays.asList("overridden"));
+					RequestContext.getCurrentContext().setRequestQueryParams(overridden);
+				}
+
+				return null;
+			}
+
+			@Override
+			public int filterOrder() {
+				return 0;
+			}
+		};
+	}
+
+}