/*
* Copyright 2013-2017 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.feign.valid;
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.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.boot.test.context.SpringBootTest.WebEnvironment;
import org.springframework.cloud.netflix.feign.EnableFeignClients;
import org.springframework.cloud.netflix.feign.FeignClient;
import org.springframework.cloud.netflix.feign.ribbon.LoadBalancerFeignClient;
import org.springframework.cloud.netflix.ribbon.RibbonClient;
import org.springframework.cloud.netflix.ribbon.StaticServerList;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.ResponseEntity;
import org.springframework.test.annotation.DirtiesContext;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestHeader;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;
import com.netflix.loadbalancer.Server;
import com.netflix.loadbalancer.ServerList;
import static org.hamcrest.Matchers.equalTo;
import static org.hamcrest.Matchers.instanceOf;
import static org.hamcrest.Matchers.is;
import static org.hamcrest.Matchers.notNullValue;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertThat;
import feign.Client;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
/**
* @author Spencer Gibb
*/
@RunWith(SpringJUnit4ClassRunner.class)
@SpringBootTest(classes = FeignOkHttpTests.Application.class, webEnvironment = WebEnvironment.RANDOM_PORT, value = {
"spring.application.name=feignclienttest", "feign.hystrix.enabled=false",
"feign.okhttp.enabled=true" })
@DirtiesContext
public class FeignOkHttpTests {
@Value("${local.server.port}")
private int port = 0;
@Autowired
private TestClient testClient;
@Autowired
private Client feignClient;
@Autowired
private UserClient userClient;
@FeignClient("localapp")
protected interface TestClient extends BaseTestClient {
}
protected interface BaseTestClient {
@RequestMapping(method = RequestMethod.GET, value = "/hello")
Hello getHello();
@RequestMapping(method = RequestMethod.PATCH, value = "/hellop", consumes = "application/json")
ResponseEntity<Void> patchHello(Hello hello);
}
protected interface UserService {
@RequestMapping(method = RequestMethod.GET, value = "/users/{id}")
User getUser(@PathVariable("id") long id);
}
@FeignClient("localapp")
protected interface UserClient extends UserService {
}
@Configuration
@EnableAutoConfiguration
@RestController
@EnableFeignClients(clients = { TestClient.class, UserClient.class })
@RibbonClient(name = "localapp", configuration = LocalRibbonClientConfiguration.class)
protected static class Application implements UserService {
@RequestMapping(method = RequestMethod.GET, value = "/hello")
public Hello getHello() {
return new Hello("hello world 1");
}
@RequestMapping(method = RequestMethod.PATCH, value = "/hellop")
public ResponseEntity<Void> patchHello(@RequestBody Hello hello,
@RequestHeader("Content-Length") int contentLength) {
if (contentLength <= 0) {
throw new IllegalArgumentException("Invalid Content-Length "+ contentLength);
}
if (!hello.getMessage().equals("foo")) {
throw new IllegalArgumentException("Invalid Hello: " + hello.getMessage());
}
return ResponseEntity.ok().header("X-Hello", "hello world patch").build();
}
@Override
public User getUser(@PathVariable("id") long id) {
return new User("John Smith");
}
}
@Test
public void testSimpleType() {
Hello hello = this.testClient.getHello();
assertNotNull("hello was null", hello);
assertEquals("first hello didn't match", new Hello("hello world 1"), hello);
}
@Test
public void testPatch() {
ResponseEntity<Void> response = this.testClient.patchHello(new Hello("foo"));
assertThat(response, is(notNullValue()));
String header = response.getHeaders().getFirst("X-Hello");
assertThat(header, equalTo("hello world patch"));
}
@Test
public void testFeignClientType() throws IllegalAccessException {
assertThat(this.feignClient, is(instanceOf(LoadBalancerFeignClient.class)));
LoadBalancerFeignClient client = (LoadBalancerFeignClient) this.feignClient;
Client delegate = client.getDelegate();
assertThat(delegate, is(instanceOf(feign.okhttp.OkHttpClient.class)));
}
@Test
public void testFeignInheritanceSupport() {
assertNotNull("UserClient was null", this.userClient);
final User user = this.userClient.getUser(1);
assertNotNull("Returned user was null", user);
assertEquals("Users were different", user, new User("John Smith"));
}
@Data
@AllArgsConstructor
@NoArgsConstructor
public static class Hello {
private String message;
}
@Data
@AllArgsConstructor
@NoArgsConstructor
public static class User {
private String name;
}
// Load balancer with fixed server list for "local" pointing to localhost
@Configuration
static class LocalRibbonClientConfiguration {
@Value("${local.server.port}")
private int port = 0;
@Bean
public ServerList<Server> ribbonServerList() {
return new StaticServerList<>(new Server("localhost", this.port));
}
}
}