/*
* 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.hystrix;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import java.util.Base64;
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.context.SpringBootTest;
import org.springframework.boot.test.context.SpringBootTest.WebEnvironment;
import org.springframework.boot.test.web.client.TestRestTemplate;
import org.springframework.cloud.client.circuitbreaker.EnableCircuitBreaker;
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.test.annotation.DirtiesContext;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
/**
* @author Spencer Gibb
*/
@RunWith(SpringJUnit4ClassRunner.class)
@SpringBootTest(classes = HystrixOnlyApplication.class, webEnvironment = WebEnvironment.RANDOM_PORT)
@DirtiesContext
public class HystrixOnlyTests {
@Value("${local.server.port}")
private int port;
@Value("${security.user.username}")
private String username;
@Value("${security.user.password}")
private String password;
@Test
public void testNormalExecution() {
String s = new TestRestTemplate()
.getForObject("http://localhost:" + this.port + "/", String.class);
assertEquals("incorrect response", "Hello world", s);
}
@Test
public void testFailureFallback() {
String s = new TestRestTemplate()
.getForObject("http://localhost:" + this.port + "/fail", String.class);
assertEquals("incorrect fallback", "Fallback Hello world", s);
}
@Test
public void testHystrixHealth() {
Map<?, ?> map = getHealth();
assertTrue("Missing hystrix health key", map.containsKey("hystrix"));
Map<?, ?> hystrix = (Map<?, ?>) map.get("hystrix");
assertEquals("Wrong hystrix status", "UP", hystrix.get("status"));
}
@Test
public void testNoDiscoveryHealth() {
Map<?, ?> map = getHealth();
// There is explicitly no discovery, so there should be no discovery health key
assertFalse("Incorrect existing discovery health key",
map.containsKey("discovery"));
}
private Map<?, ?> getHealth() {
return new TestRestTemplate().exchange(
"http://localhost:" + this.port + "/admin/health", HttpMethod.GET,
new HttpEntity<Void>(createBasicAuthHeader(username, password)),
Map.class).getBody();
}
public static HttpHeaders createBasicAuthHeader(final String username,
final String password) {
return new HttpHeaders() {
private static final long serialVersionUID = 1766341693637204893L;
{
String auth = username + ":" + password;
byte[] encodedAuth = Base64.getEncoder().encode(auth.getBytes());
String authHeader = "Basic " + new String(encodedAuth);
this.set("Authorization", authHeader);
}
};
}
}
class Service {
@HystrixCommand
public String hello() {
return "Hello world";
}
@HystrixCommand(fallbackMethod = "fallback")
public String fail() {
throw new RuntimeException("Always fail");
}
public String fallback() {
return "Fallback Hello world";
}
}
// Don't use @SpringBootApplication because we don't want to component scan
@Configuration
@EnableAutoConfiguration
@EnableCircuitBreaker
@RestController
class HystrixOnlyApplication {
@Bean
public Service service() {
return new Service();
}
@Autowired
private Service service;
@RequestMapping("/")
public String home() {
return this.service.hello();
}
@RequestMapping("/fail")
public String fail() {
return this.service.fail();
}
public static void main(String[] args) {
SpringApplication.run(HystrixOnlyApplication.class, args);
}
}