/*
* Copyright 2014 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 de.codecentric.boot.admin.discovery;
import static java.util.Arrays.asList;
import static java.util.Collections.singleton;
import static org.junit.Assert.assertEquals;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.when;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.List;
import org.junit.Before;
import org.junit.Test;
import org.springframework.cloud.client.DefaultServiceInstance;
import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.cloud.client.discovery.event.HeartbeatEvent;
import org.springframework.cloud.client.discovery.event.InstanceRegisteredEvent;
import org.springframework.cloud.client.discovery.event.ParentHeartbeatEvent;
import org.springframework.context.ApplicationEventPublisher;
import de.codecentric.boot.admin.model.Application;
import de.codecentric.boot.admin.registry.ApplicationRegistry;
import de.codecentric.boot.admin.registry.HashingApplicationUrlIdGenerator;
import de.codecentric.boot.admin.registry.store.SimpleApplicationStore;
public class ApplicationDiscoveryListenerTest {
private ApplicationDiscoveryListener listener;
private DiscoveryClient discovery;
private ApplicationRegistry registry;
@Before
public void setup() {
registry = new ApplicationRegistry(new SimpleApplicationStore(),
new HashingApplicationUrlIdGenerator());
registry.setApplicationEventPublisher(mock(ApplicationEventPublisher.class));
discovery = mock(DiscoveryClient.class);
listener = new ApplicationDiscoveryListener(discovery, registry);
}
@Test
public void test_ignore() {
when(discovery.getServices()).thenReturn(Collections.singletonList("service"));
when(discovery.getInstances("service")).thenReturn(Collections.singletonList(
(ServiceInstance) new DefaultServiceInstance("service", "localhost", 80, false)));
listener.setIgnoredServices(singleton("service"));
listener.onInstanceRegistered(new InstanceRegisteredEvent<>(new Object(), null));
assertEquals(0, registry.getApplications().size());
}
@Test
public void test_matching() {
when(discovery.getServices()).thenReturn(Collections.singletonList("service"));
when(discovery.getInstances("service")).thenReturn(Collections.singletonList(
(ServiceInstance) new DefaultServiceInstance("service", "localhost", 80, false)));
listener.setServices(singleton("notService"));
listener.onInstanceRegistered(new InstanceRegisteredEvent<>(new Object(), null));
assertEquals(0, registry.getApplications().size());
}
@Test
public void test_ignore_pattern() {
when(discovery.getServices()).thenReturn(asList("service", "rabbit-1", "rabbit-2"));
when(discovery.getInstances("service")).thenReturn(Collections.singletonList(
(ServiceInstance) new DefaultServiceInstance("service", "localhost", 80, false)));
listener.setIgnoredServices(singleton("rabbit-*"));
listener.onInstanceRegistered(new InstanceRegisteredEvent<>(new Object(), null));
Collection<Application> applications = registry.getApplications();
assertEquals(1, applications.size());
assertEquals("service", applications.iterator().next().getName());
}
@Test
public void test_matching_pattern() {
when(discovery.getServices()).thenReturn(asList("service", "rabbit-1", "rabbit-2"));
when(discovery.getInstances("service")).thenReturn(Collections.singletonList(
(ServiceInstance) new DefaultServiceInstance("service", "localhost", 80, false)));
listener.setServices(singleton("ser*"));
listener.onInstanceRegistered(new InstanceRegisteredEvent<>(new Object(), null));
Collection<Application> applications = registry.getApplications();
assertEquals(1, applications.size());
assertEquals("service", applications.iterator().next().getName());
}
@Test
public void test_matching_and_ignore_pattern() {
when(discovery.getServices()).thenReturn(asList("service-1", "service", "rabbit-1", "rabbit-2"));
when(discovery.getInstances("service")).thenReturn(Collections.singletonList(
(ServiceInstance) new DefaultServiceInstance("service", "localhost", 80, false)));
when(discovery.getInstances("service-1")).thenReturn(Collections.singletonList(
(ServiceInstance) new DefaultServiceInstance("service-1", "localhost", 80, false)));
listener.setServices(singleton("ser*"));
listener.setIgnoredServices(singleton("service-*"));
listener.onInstanceRegistered(new InstanceRegisteredEvent<>(new Object(), null));
Collection<Application> applications = registry.getApplications();
assertEquals(1, applications.size());
assertEquals("service", applications.iterator().next().getName());
}
@Test
public void test_register_and_convert() {
when(discovery.getServices()).thenReturn(Collections.singletonList("service"));
when(discovery.getInstances("service")).thenReturn(Collections.singletonList(
(ServiceInstance) new DefaultServiceInstance("service", "localhost", 80, false)));
listener.onInstanceRegistered(new InstanceRegisteredEvent<>(new Object(), null));
assertEquals(1, registry.getApplications().size());
Application application = registry.getApplications().iterator().next();
assertEquals("http://localhost:80/health", application.getHealthUrl());
assertEquals("http://localhost:80", application.getManagementUrl());
assertEquals("http://localhost:80", application.getServiceUrl());
assertEquals("service", application.getName());
}
@Test
public void single_discovery_for_same_heartbeat() {
Object heartbeat = new Object();
listener.onParentHeartbeat(new ParentHeartbeatEvent(new Object(), heartbeat));
when(discovery.getServices()).thenReturn(Collections.singletonList("service"));
when(discovery.getInstances("service")).thenReturn(Collections.singletonList(
(ServiceInstance) new DefaultServiceInstance("service", "localhost", 80, false)));
listener.onApplicationEvent(new HeartbeatEvent(new Object(), heartbeat));
assertEquals(0, registry.getApplications().size());
listener.onApplicationEvent(new HeartbeatEvent(new Object(), new Object()));
assertEquals(1, registry.getApplications().size());
}
@Test
public void deregister_removed_app() {
registry.register(Application.create("ignored").withHealthUrl("http://health")
.withId("abcdef").build());
registry.register(Application.create("different-source").withHealthUrl("http://health2")
.withId("abcdef").withSource("http-api").build());
listener.setIgnoredServices(singleton("ignored"));
List<ServiceInstance> instances = new ArrayList<>();
instances.add(new DefaultServiceInstance("service", "localhost", 80, false));
instances.add(new DefaultServiceInstance("service", "example.net", 80, false));
when(discovery.getServices()).thenReturn(Collections.singletonList("service"));
when(discovery.getInstances("service")).thenReturn(instances);
listener.onApplicationEvent(new HeartbeatEvent(new Object(), new Object()));
assertEquals(2, registry.getApplicationsByName("service").size());
assertEquals(1, registry.getApplicationsByName("ignored").size());
assertEquals(1, registry.getApplicationsByName("different-source").size());
instances.remove(0);
listener.onApplicationEvent(new HeartbeatEvent(new Object(), new Object()));
assertEquals(1, registry.getApplicationsByName("service").size());
assertEquals(1, registry.getApplicationsByName("ignored").size());
assertEquals(1, registry.getApplicationsByName("different-source").size());
}
}