/*
* Copyright 2010 Proofpoint, Inc.
*
* 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 io.airlift.discovery.client;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableMap;
import io.airlift.discovery.client.testing.InMemoryDiscoveryClient;
import io.airlift.node.NodeInfo;
import io.airlift.testing.Assertions;
import org.testng.Assert;
import org.testng.annotations.AfterMethod;
import org.testng.annotations.BeforeMethod;
import org.testng.annotations.Test;
import java.util.UUID;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.ScheduledThreadPoolExecutor;
import static io.airlift.concurrent.Threads.daemonThreadsNamed;
public class TestCachingServiceSelector
{
private static final ServiceDescriptor APPLE_1_SERVICE = new ServiceDescriptor(UUID.randomUUID(), "node-A", "apple", "pool", "location", ServiceState.RUNNING, ImmutableMap.of("a", "apple"));
private static final ServiceDescriptor APPLE_2_SERVICE = new ServiceDescriptor(UUID.randomUUID(), "node-B", "apple", "pool", "location", ServiceState.RUNNING, ImmutableMap.of("a", "apple"));
private static final ServiceDescriptor DIFFERENT_TYPE = new ServiceDescriptor(UUID.randomUUID(), "node-A", "banana", "pool", "location", ServiceState.RUNNING, ImmutableMap.of("b", "banana"));
private static final ServiceDescriptor DIFFERENT_POOL = new ServiceDescriptor(UUID.randomUUID(), "node-B", "apple", "fool", "location", ServiceState.RUNNING, ImmutableMap.of("a", "apple"));
private ScheduledExecutorService executor;
private NodeInfo nodeInfo;
@BeforeMethod
protected void setUp()
throws Exception
{
executor = new ScheduledThreadPoolExecutor(10, daemonThreadsNamed("Discovery-%s"));
nodeInfo = new NodeInfo("environment");
}
@AfterMethod
public void tearDown()
throws Exception
{
executor.shutdownNow();
}
@Test
public void testBasics()
{
CachingServiceSelector serviceSelector = new CachingServiceSelector("type",
new ServiceSelectorConfig().setPool("pool"),
new InMemoryDiscoveryClient(nodeInfo),
executor);
Assert.assertEquals(serviceSelector.getType(), "type");
Assert.assertEquals(serviceSelector.getPool(), "pool");
}
@Test
public void testNotStartedEmpty()
{
CachingServiceSelector serviceSelector = new CachingServiceSelector("type",
new ServiceSelectorConfig().setPool("pool"),
new InMemoryDiscoveryClient(nodeInfo),
executor);
Assert.assertEquals(serviceSelector.selectAllServices(), ImmutableList.of());
}
@Test
public void testStartedEmpty()
throws Exception
{
CachingServiceSelector serviceSelector = new CachingServiceSelector("type",
new ServiceSelectorConfig().setPool("pool"),
new InMemoryDiscoveryClient(nodeInfo),
executor);
serviceSelector.start();
Assert.assertEquals(serviceSelector.selectAllServices(), ImmutableList.of());
}
@Test
public void testNotStartedWithServices()
{
InMemoryDiscoveryClient discoveryClient = new InMemoryDiscoveryClient(nodeInfo);
discoveryClient.addDiscoveredService(APPLE_1_SERVICE);
discoveryClient.addDiscoveredService(APPLE_2_SERVICE);
discoveryClient.addDiscoveredService(DIFFERENT_TYPE);
discoveryClient.addDiscoveredService(DIFFERENT_POOL);
CachingServiceSelector serviceSelector = new CachingServiceSelector("apple",
new ServiceSelectorConfig().setPool("pool"),
discoveryClient,
executor);
Assert.assertEquals(serviceSelector.selectAllServices(), ImmutableList.of());
}
@Test
public void testStartedWithServices()
throws Exception
{
InMemoryDiscoveryClient discoveryClient = new InMemoryDiscoveryClient(nodeInfo);
discoveryClient.addDiscoveredService(APPLE_1_SERVICE);
discoveryClient.addDiscoveredService(APPLE_2_SERVICE);
discoveryClient.addDiscoveredService(DIFFERENT_TYPE);
discoveryClient.addDiscoveredService(DIFFERENT_POOL);
CachingServiceSelector serviceSelector = new CachingServiceSelector("apple",
new ServiceSelectorConfig().setPool("pool"),
discoveryClient,
executor);
serviceSelector.start();
Thread.sleep(100);
Assertions.assertEqualsIgnoreOrder(serviceSelector.selectAllServices(), ImmutableList.of(APPLE_1_SERVICE, APPLE_2_SERVICE));
}
}