/*
* Copyright 2013-2016 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.restclient;
import static org.hamcrest.CoreMatchers.containsString;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertThat;
import static org.junit.Assert.assertTrue;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.Set;
import java.util.UUID;
import javax.servlet.http.HttpServletRequest;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.autoconfigure.web.ErrorAttributes;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.boot.test.context.SpringBootTest.WebEnvironment;
import org.springframework.boot.test.web.client.TestRestTemplate;
import org.springframework.cloud.client.discovery.DiscoveryClient;
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.ribbon.StaticServerList;
import org.springframework.cloud.netflix.zuul.EnableZuulProxy;
import org.springframework.cloud.netflix.zuul.filters.ZuulProperties;
import org.springframework.cloud.netflix.zuul.filters.discovery.DiscoveryClientRouteLocator;
import org.springframework.cloud.netflix.zuul.filters.route.RestClientRibbonCommand;
import org.springframework.cloud.netflix.zuul.filters.route.RestClientRibbonCommandFactory;
import org.springframework.cloud.netflix.zuul.filters.route.RibbonCommandContext;
import org.springframework.cloud.netflix.zuul.filters.route.RibbonCommandFactory;
import org.springframework.cloud.netflix.zuul.filters.route.ZuulFallbackProvider;
import org.springframework.cloud.netflix.zuul.filters.route.support.NoEncodingFormHttpMessageConverter;
import org.springframework.cloud.netflix.zuul.filters.route.support.ZuulProxyTestBase;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.HttpEntity;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpMethod;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.http.client.ClientHttpResponse;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.StringHttpMessageConverter;
import org.springframework.mock.http.client.MockClientHttpResponse;
import org.springframework.test.annotation.DirtiesContext;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import org.springframework.util.LinkedMultiValueMap;
import org.springframework.util.MultiValueMap;
import org.springframework.web.bind.annotation.MatrixVariable;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
import com.netflix.client.ClientException;
import com.netflix.loadbalancer.Server;
import com.netflix.loadbalancer.ServerList;
import com.netflix.niws.client.http.RestClient;
import lombok.SneakyThrows;
@RunWith(SpringJUnit4ClassRunner.class)
@SpringBootTest(classes = RestClientRibbonCommandIntegrationTests.TestConfig.class, webEnvironment = WebEnvironment.RANDOM_PORT, value = {
"zuul.routes.other: /test/**=http://localhost:7777/local",
"zuul.routes.another: /another/twolevel/**", "zuul.routes.simple: /simple/**",
"zuul.routes.badhost: /badhost/**", "zuul.ignoredHeaders: X-Header",
"zuul.routes.rnd: /rnd/**", "rnd.ribbon.listOfServers: ${random.value}",
"zuul.removeSemicolonContent: false", "ribbon.restclient.enabled=true"})
@DirtiesContext
public class RestClientRibbonCommandIntegrationTests extends ZuulProxyTestBase {
@Autowired
DiscoveryClientRouteLocator routeLocator;
@Override
protected boolean supportsPatch() {
return false;
}
@Override
protected boolean supportsDeleteWithBody() {
return false;
}
@Test
public void simpleHostRouteWithTrailingSlash() {
this.routes.addRoute("/self/**", "http://localhost:" + this.port + "/");
this.endpoint.reset();
ResponseEntity<String> result = new TestRestTemplate().exchange(
"http://localhost:" + this.port + "/self/trailing-slash", HttpMethod.GET,
new HttpEntity<>((Void) null), String.class);
assertEquals(HttpStatus.OK, result.getStatusCode());
assertEquals("/trailing-slash", result.getBody());
assertFalse(this.myErrorController.wasControllerUsed());
}
@Test
public void simpleHostRouteWithNonExistentUrl() {
this.routes.addRoute("/self/**", "http://localhost:" + this.port + "/");
this.endpoint.reset();
String uri = "/self/nonExistentUrl";
this.myErrorController.setUriToMatch(uri);
ResponseEntity<String> result = new TestRestTemplate().exchange(
"http://localhost:" + this.port + uri, HttpMethod.GET,
new HttpEntity<>((Void) null), String.class);
assertEquals(HttpStatus.NOT_FOUND, result.getStatusCode());
assertFalse(this.myErrorController.wasControllerUsed());
}
@Test
public void simpleHostRouteIgnoredHeader() {
this.routes.addRoute("/self/**", "http://localhost:" + this.port + "/");
this.endpoint.reset();
ResponseEntity<String> result = new TestRestTemplate().exchange(
"http://localhost:" + this.port + "/self/add-header", HttpMethod.GET,
new HttpEntity<>((Void) null), String.class);
assertEquals(HttpStatus.OK, result.getStatusCode());
assertNull(result.getHeaders().get("X-Header"));
}
@Test
public void simpleHostRouteDefaultIgnoredHeader() {
this.routes.addRoute("/self/**", "http://localhost:" + this.port + "/");
this.endpoint.reset();
ResponseEntity<String> result = new TestRestTemplate().exchange(
"http://localhost:" + this.port + "/self/add-header", HttpMethod.GET,
new HttpEntity<>((Void) null), String.class);
assertEquals(HttpStatus.OK, result.getStatusCode());
assertEquals("[testclient:0]",
result.getHeaders().get("X-Application-Context").toString());
}
@Test
public void simpleHostRouteWithQuery() {
this.routes.addRoute("/self/**", "http://localhost:" + this.port + "/");
this.endpoint.reset();
ResponseEntity<String> result = new TestRestTemplate().exchange(
"http://localhost:" + this.port + "/self/query?foo=bar", HttpMethod.GET,
new HttpEntity<>((Void) null), String.class);
assertEquals(HttpStatus.OK, result.getStatusCode());
assertEquals("/query?foo=bar", result.getBody());
}
@Test
public void simpleHostRouteWithMatrix() {
this.routes.addRoute("/self/**", "http://localhost:" + this.port + "/");
this.endpoint.reset();
ResponseEntity<String> result = new TestRestTemplate().exchange(
"http://localhost:" + this.port + "/self/matrix/my;q=2;p=1/more;x=2",
HttpMethod.GET, new HttpEntity<>((Void) null), String.class);
assertEquals(HttpStatus.OK, result.getStatusCode());
assertEquals("my=1-2;more=2", result.getBody());
}
@Test
public void simpleHostRouteWithEncodedQuery() {
this.routes.addRoute("/self/**", "http://localhost:" + this.port + "/");
this.endpoint.reset();
ResponseEntity<String> result = new TestRestTemplate().exchange(
"http://localhost:" + this.port + "/self/query?foo={foo}", HttpMethod.GET,
new HttpEntity<>((Void) null), String.class, "weird#chars");
assertEquals(HttpStatus.OK, result.getStatusCode());
assertEquals("/query?foo=weird#chars", result.getBody());
}
@Test
public void simpleHostRouteWithColonParamNames() {
this.routes.addRoute("/self/**", "http://localhost:" + this.port + "/");
this.endpoint.reset();
ResponseEntity<String> result = new TestRestTemplate().exchange(
"http://localhost:" + this.port + "/self/colonquery?foo:bar={foobar0}&foobar={foobar1}", HttpMethod.GET,
new HttpEntity<>((Void) null), String.class, "baz", "bam");
assertEquals(HttpStatus.OK, result.getStatusCode());
assertEquals("/colonquery?foo:bar=baz&foobar=bam", result.getBody());
}
@Test
public void simpleHostRouteWithContentType() {
this.routes.addRoute("/self/**", "http://localhost:" + this.port + "/");
this.endpoint.reset();
ResponseEntity<String> result = new TestRestTemplate().exchange(
"http://localhost:" + this.port + "/self/content-type", HttpMethod.POST,
new HttpEntity<>((Void) null), String.class);
assertEquals(HttpStatus.OK, result.getStatusCode());
assertEquals("<NONE>", result.getBody());
}
@Test
public void ribbonCommandForbidden() {
ResponseEntity<String> result = new TestRestTemplate().exchange(
"http://localhost:" + this.port + "/simple/throwexception/403",
HttpMethod.GET, new HttpEntity<>((Void) null), String.class);
assertEquals(HttpStatus.FORBIDDEN, result.getStatusCode());
}
@Test
public void ribbonCommandServiceUnavailable() {
ResponseEntity<String> result = new TestRestTemplate().exchange(
"http://localhost:" + this.port + "/simple/throwexception/503",
HttpMethod.GET, new HttpEntity<>((Void) null), String.class);
assertEquals(HttpStatus.SERVICE_UNAVAILABLE, result.getStatusCode());
}
@Test
public void ribbonCommandBadHost() {
ResponseEntity<String> result = new TestRestTemplate().exchange(
"http://localhost:" + this.port + "/badhost/1", HttpMethod.GET,
new HttpEntity<>((Void) null), String.class);
assertEquals(HttpStatus.INTERNAL_SERVER_ERROR, result.getStatusCode());
// JSON response
assertThat(result.getBody(), containsString("\"status\":500"));
}
@Test
public void ribbonCommandRandomHostFromConfig() {
ResponseEntity<String> result = new TestRestTemplate().exchange(
"http://localhost:" + this.port + "/rnd/1", HttpMethod.GET,
new HttpEntity<>((Void) null), String.class);
assertEquals(HttpStatus.INTERNAL_SERVER_ERROR, result.getStatusCode());
// JSON response
assertThat(result.getBody(), containsString("\"status\":500"));
}
@Test
public void ribbonCommandFactoryOverridden() {
assertTrue("ribbonCommandFactory not a MyRibbonCommandFactory",
this.ribbonCommandFactory instanceof TestConfig.MyRibbonCommandFactory);
}
@Override
@SuppressWarnings("deprecation")
@Test
public void javascriptEncodedFormParams() {
TestRestTemplate testRestTemplate = new TestRestTemplate();
ArrayList<HttpMessageConverter<?>> converters = new ArrayList<>();
converters.addAll(Arrays.asList(new StringHttpMessageConverter(),
new NoEncodingFormHttpMessageConverter()));
testRestTemplate.getRestTemplate().setMessageConverters(converters);
MultiValueMap<String, String> map = new LinkedMultiValueMap<>();
map.add("foo", "(bar)");
ResponseEntity<String> result = testRestTemplate.postForEntity(
"http://localhost:" + this.port + "/simple/local", map, String.class);
assertEquals(HttpStatus.OK, result.getStatusCode());
assertEquals("Posted [(bar)] and Content-Length was: -1!", result.getBody());
}
@Test
public void routeLocatorOverridden() {
assertTrue("routeLocator not a MyRouteLocator",
this.routeLocator instanceof TestConfig.MyRouteLocator);
}
// Don't use @SpringBootApplication because we don't want to component scan
@Configuration
@EnableAutoConfiguration
@RestController
@EnableZuulProxy
@RibbonClients({
@RibbonClient(name = "badhost", configuration = TestConfig.BadHostRibbonClientConfiguration.class),
@RibbonClient(name = "simple", configuration = ZuulProxyTestBase.SimpleRibbonClientConfiguration.class),
@RibbonClient(name = "another", configuration = ZuulProxyTestBase.AnotherRibbonClientConfiguration.class) })
static class TestConfig extends ZuulProxyTestBase.AbstractZuulProxyApplication {
@Autowired(required = false)
private Set<ZuulFallbackProvider> fallbackProviders = Collections.emptySet();
@RequestMapping("/trailing-slash")
public String trailingSlash(HttpServletRequest request) {
return request.getRequestURI();
}
@RequestMapping("/content-type")
public String contentType(HttpServletRequest request) {
String header = request.getHeader("Content-Type");
return header == null ? "<NONE>" : header;
}
@RequestMapping("/add-header")
public ResponseEntity<String> addHeader(HttpServletRequest request) {
HttpHeaders headers = new HttpHeaders();
headers.set("X-Header", "FOO");
ResponseEntity<String> result = new ResponseEntity<>(
request.getRequestURI(), headers, HttpStatus.OK);
return result;
}
@RequestMapping("/query")
public String query(HttpServletRequest request, @RequestParam String foo) {
return request.getRequestURI() + "?foo=" + foo;
}
@RequestMapping("/colonquery")
public String colonQuery(HttpServletRequest request, @RequestParam(name = "foo:bar") String foobar0, @RequestParam(name = "foobar") String foobar1) {
return request.getRequestURI() + "?foo:bar=" + foobar0 + "&foobar=" + foobar1;
}
@RequestMapping("/matrix/{name}/{another}")
public String matrix(@PathVariable("name") String name,
@MatrixVariable(value = "p", pathVar = "name") int p,
@MatrixVariable(value = "q", pathVar = "name") int q,
@PathVariable("another") String another,
@MatrixVariable(value = "x", pathVar = "another") int x) {
return name + "=" + p + "-" + q + ";" + another + "=" + x;
}
@Bean
public RibbonCommandFactory<?> ribbonCommandFactory(
SpringClientFactory clientFactory) {
return new MyRibbonCommandFactory(clientFactory, fallbackProviders);
}
@Bean
public DiscoveryClientRouteLocator discoveryRouteLocator(
DiscoveryClient discoveryClient,
ZuulProperties zuulProperties) {
return new MyRouteLocator("/", discoveryClient, zuulProperties);
}
@Bean
public MyErrorController myErrorController(ErrorAttributes errorAttributes) {
return new MyErrorController(errorAttributes);
}
public static void main(String[] args) {
SpringApplication.run(TestConfig.class, args);
}
public static class MyRibbonCommandFactory
extends RestClientRibbonCommandFactory {
private SpringClientFactory clientFactory;
public MyRibbonCommandFactory(SpringClientFactory clientFactory,
Set<ZuulFallbackProvider> fallbackProviders) {
super(clientFactory, new ZuulProperties(), fallbackProviders);
this.clientFactory = clientFactory;
}
@Override
@SuppressWarnings("deprecation")
@SneakyThrows
public RestClientRibbonCommand create(RibbonCommandContext context) {
String uri = context.getUri();
if (uri.startsWith("/throwexception/")) {
String code = uri.replace("/throwexception/", "");
RestClient restClient = clientFactory
.getClient(context.getServiceId(), RestClient.class);
return new MyCommand(Integer.parseInt(code), context.getServiceId(),
restClient, context);
}
return super.create(context);
}
}
static class MyCommand extends RestClientRibbonCommand {
private int errorCode;
public MyCommand(int errorCode, String commandKey, RestClient restClient,
RibbonCommandContext context) {
super(commandKey, restClient, context, new ZuulProperties());
this.errorCode = errorCode;
}
@Override
protected ClientHttpResponse run() throws Exception {
if (this.errorCode == 503) {
throw new ClientException(ClientException.ErrorType.SERVER_THROTTLED);
}
return new MockClientHttpResponse((byte[]) null,
HttpStatus.valueOf(this.errorCode));
}
}
// Load balancer with fixed server list for "simple" pointing to bad host
@Configuration
static class BadHostRibbonClientConfiguration {
@Bean
public ServerList<Server> ribbonServerList() {
return new StaticServerList<>(
new Server(UUID.randomUUID().toString(), 4322));
}
}
static class MyRouteLocator extends DiscoveryClientRouteLocator {
public MyRouteLocator(String servletPath, DiscoveryClient discovery,
ZuulProperties properties) {
super(servletPath, discovery, properties);
}
}
}
}