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/*
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* Copyright 2013-2017 the original author or authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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*/
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package org.springframework.cloud.netflix.feign.valid;
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import org.junit.Test;
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import org.junit.runner.RunWith;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.beans.factory.annotation.Value;
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import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
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import org.springframework.boot.test.context.SpringBootTest;
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import org.springframework.boot.test.context.SpringBootTest.WebEnvironment;
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import org.springframework.cloud.netflix.feign.EnableFeignClients;
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import org.springframework.cloud.netflix.feign.FeignClient;
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import org.springframework.cloud.netflix.feign.ribbon.LoadBalancerFeignClient;
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import org.springframework.cloud.netflix.ribbon.RibbonClient;
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import org.springframework.cloud.netflix.ribbon.StaticServerList;
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import org.springframework.context.annotation.Bean;
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import org.springframework.context.annotation.Configuration;
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import org.springframework.http.ResponseEntity;
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import org.springframework.test.annotation.DirtiesContext;
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import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
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import org.springframework.web.bind.annotation.PathVariable;
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import org.springframework.web.bind.annotation.RequestBody;
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import org.springframework.web.bind.annotation.RequestHeader;
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import org.springframework.web.bind.annotation.RequestMapping;
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import org.springframework.web.bind.annotation.RequestMethod;
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import org.springframework.web.bind.annotation.RestController;
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import com.netflix.loadbalancer.Server;
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import com.netflix.loadbalancer.ServerList;
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import static org.hamcrest.Matchers.equalTo;
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import static org.hamcrest.Matchers.instanceOf;
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import static org.hamcrest.Matchers.is;
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import static org.hamcrest.Matchers.notNullValue;
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import static org.junit.Assert.assertEquals;
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import static org.junit.Assert.assertNotNull;
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import static org.junit.Assert.assertThat;
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import feign.Client;
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import lombok.AllArgsConstructor;
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import lombok.Data;
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import lombok.NoArgsConstructor;
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/**
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* @author Spencer Gibb
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*/
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@RunWith(SpringJUnit4ClassRunner.class)
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@SpringBootTest(classes = FeignOkHttpTests.Application.class, webEnvironment = WebEnvironment.RANDOM_PORT, value = {
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"spring.application.name=feignclienttest", "feign.hystrix.enabled=false",
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"feign.okhttp.enabled=true" })
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@DirtiesContext
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public class FeignOkHttpTests {
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@Value("${local.server.port}")
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private int port = 0;
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@Autowired
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private TestClient testClient;
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@Autowired
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private Client feignClient;
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@Autowired
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private UserClient userClient;
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@FeignClient("localapp")
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protected interface TestClient extends BaseTestClient {
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}
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protected interface BaseTestClient {
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@RequestMapping(method = RequestMethod.GET, value = "/hello")
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Hello getHello();
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@RequestMapping(method = RequestMethod.PATCH, value = "/hellop", consumes = "application/json")
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ResponseEntity<Void> patchHello(Hello hello);
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}
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protected interface UserService {
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@RequestMapping(method = RequestMethod.GET, value = "/users/{id}")
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User getUser(@PathVariable("id") long id);
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}
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@FeignClient("localapp")
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protected interface UserClient extends UserService {
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}
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@Configuration
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@EnableAutoConfiguration
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@RestController
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@EnableFeignClients(clients = { TestClient.class, UserClient.class })
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@RibbonClient(name = "localapp", configuration = LocalRibbonClientConfiguration.class)
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protected static class Application implements UserService {
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@RequestMapping(method = RequestMethod.GET, value = "/hello")
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public Hello getHello() {
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return new Hello("hello world 1");
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}
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@RequestMapping(method = RequestMethod.PATCH, value = "/hellop")
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public ResponseEntity<Void> patchHello(@RequestBody Hello hello,
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@RequestHeader("Content-Length") int contentLength) {
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if (contentLength <= 0) {
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throw new IllegalArgumentException("Invalid Content-Length "+ contentLength);
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}
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if (!hello.getMessage().equals("foo")) {
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throw new IllegalArgumentException("Invalid Hello: " + hello.getMessage());
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}
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return ResponseEntity.ok().header("X-Hello", "hello world patch").build();
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}
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@Override
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public User getUser(@PathVariable("id") long id) {
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return new User("John Smith");
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}
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}
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@Test
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public void testSimpleType() {
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Hello hello = this.testClient.getHello();
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assertNotNull("hello was null", hello);
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assertEquals("first hello didn't match", new Hello("hello world 1"), hello);
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}
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@Test
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public void testPatch() {
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ResponseEntity<Void> response = this.testClient.patchHello(new Hello("foo"));
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assertThat(response, is(notNullValue()));
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String header = response.getHeaders().getFirst("X-Hello");
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assertThat(header, equalTo("hello world patch"));
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}
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@Test
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public void testFeignClientType() throws IllegalAccessException {
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assertThat(this.feignClient, is(instanceOf(LoadBalancerFeignClient.class)));
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LoadBalancerFeignClient client = (LoadBalancerFeignClient) this.feignClient;
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Client delegate = client.getDelegate();
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assertThat(delegate, is(instanceOf(feign.okhttp.OkHttpClient.class)));
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}
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@Test
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public void testFeignInheritanceSupport() {
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assertNotNull("UserClient was null", this.userClient);
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final User user = this.userClient.getUser(1);
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assertNotNull("Returned user was null", user);
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assertEquals("Users were different", user, new User("John Smith"));
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}
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@Data
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@AllArgsConstructor
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@NoArgsConstructor
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public static class Hello {
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private String message;
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}
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@Data
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@AllArgsConstructor
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@NoArgsConstructor
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public static class User {
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private String name;
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}
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// Load balancer with fixed server list for "local" pointing to localhost
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@Configuration
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static class LocalRibbonClientConfiguration {
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@Value("${local.server.port}")
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private int port = 0;
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@Bean
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public ServerList<Server> ribbonServerList() {
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return new StaticServerList<>(new Server("localhost", this.port));
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}
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}
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}
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Spencer Gibb