/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.flink.runtime.instance;
import akka.actor.ActorSystem;
import akka.testkit.JavaTestKit;
import org.apache.flink.runtime.clusterframework.types.ResourceID;
import org.apache.flink.runtime.jobmanager.slots.ActorTaskManagerGateway;
import org.apache.flink.runtime.taskmanager.TaskManagerLocation;
import org.apache.flink.runtime.testingUtils.TestingUtils;
import org.apache.flink.runtime.testutils.CommonTestUtils;
import org.junit.AfterClass;
import org.junit.Assert;
import org.junit.BeforeClass;
import org.junit.Test;
import java.net.InetAddress;
import java.util.Collection;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Set;
import java.util.UUID;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
/**
* Tests for {@link org.apache.flink.runtime.instance.InstanceManager}.
*/
public class InstanceManagerTest{
static ActorSystem system;
static UUID leaderSessionID = UUID.randomUUID();
@BeforeClass
public static void setup(){
system = ActorSystem.create("TestingActorSystem", TestingUtils.testConfig());
}
@AfterClass
public static void teardown(){
JavaTestKit.shutdownActorSystem(system);
system = null;
}
@Test
public void testInstanceRegistering() {
try {
InstanceManager cm = new InstanceManager();
final int dataPort = 20000;
HardwareDescription hardwareDescription = HardwareDescription.extractFromSystem(4096);
InetAddress address = InetAddress.getByName("127.0.0.1");
// register three instances
ResourceID resID1 = ResourceID.generate();
ResourceID resID2 = ResourceID.generate();
ResourceID resID3 = ResourceID.generate();
TaskManagerLocation ici1 = new TaskManagerLocation(resID1, address, dataPort);
TaskManagerLocation ici2 = new TaskManagerLocation(resID2, address, dataPort + 15);
TaskManagerLocation ici3 = new TaskManagerLocation(resID3, address, dataPort + 30);
final JavaTestKit probe1 = new JavaTestKit(system);
final JavaTestKit probe2 = new JavaTestKit(system);
final JavaTestKit probe3 = new JavaTestKit(system);
cm.registerTaskManager(
new ActorTaskManagerGateway(new AkkaActorGateway(probe1.getRef(), leaderSessionID)),
ici1,
hardwareDescription,
1);
cm.registerTaskManager(
new ActorTaskManagerGateway(new AkkaActorGateway(probe2.getRef(), leaderSessionID)),
ici2,
hardwareDescription,
2);
cm.registerTaskManager(
new ActorTaskManagerGateway(new AkkaActorGateway(probe3.getRef(), leaderSessionID)),
ici3,
hardwareDescription,
5);
assertEquals(3, cm.getNumberOfRegisteredTaskManagers());
assertEquals(8, cm.getTotalNumberOfSlots());
Collection<Instance> instances = cm.getAllRegisteredInstances();
Set<TaskManagerLocation> taskManagerLocations = new
HashSet<TaskManagerLocation>();
for(Instance instance: instances){
taskManagerLocations.add(instance.getTaskManagerLocation());
}
assertTrue(taskManagerLocations.contains(ici1));
assertTrue(taskManagerLocations.contains(ici2));
assertTrue(taskManagerLocations.contains(ici3));
cm.shutdown();
}
catch (Exception e) {
System.err.println(e.getMessage());
e.printStackTrace();
Assert.fail("Test erroneous: " + e.getMessage());
}
}
@Test
public void testRegisteringAlreadyRegistered() {
try {
InstanceManager cm = new InstanceManager();
final int dataPort = 20000;
ResourceID resID1 = ResourceID.generate();
ResourceID resID2 = ResourceID.generate();
HardwareDescription resources = HardwareDescription.extractFromSystem(4096);
InetAddress address = InetAddress.getByName("127.0.0.1");
TaskManagerLocation ici = new TaskManagerLocation(resID1, address, dataPort);
JavaTestKit probe = new JavaTestKit(system);
cm.registerTaskManager(
new ActorTaskManagerGateway(new AkkaActorGateway(probe.getRef(), leaderSessionID)),
ici,
resources,
1);
assertEquals(1, cm.getNumberOfRegisteredTaskManagers());
assertEquals(1, cm.getTotalNumberOfSlots());
try {
cm.registerTaskManager(
new ActorTaskManagerGateway(new AkkaActorGateway(probe.getRef(), leaderSessionID)),
ici,
resources,
1);
} catch (Exception e) {
// good
}
// check for correct number of registered instances
assertEquals(1, cm.getNumberOfRegisteredTaskManagers());
assertEquals(1, cm.getTotalNumberOfSlots());
cm.shutdown();
}
catch (Exception e) {
System.err.println(e.getMessage());
e.printStackTrace();
Assert.fail("Test erroneous: " + e.getMessage());
}
}
@Test
public void testReportHeartbeat() {
try {
InstanceManager cm = new InstanceManager();
final int dataPort = 20000;
ResourceID resID1 = ResourceID.generate();
ResourceID resID2 = ResourceID.generate();
ResourceID resID3 = ResourceID.generate();
HardwareDescription hardwareDescription = HardwareDescription.extractFromSystem(4096);
InetAddress address = InetAddress.getByName("127.0.0.1");
// register three instances
TaskManagerLocation ici1 = new TaskManagerLocation(resID1, address, dataPort);
TaskManagerLocation ici2 = new TaskManagerLocation(resID2, address, dataPort + 1);
TaskManagerLocation ici3 = new TaskManagerLocation(resID3, address, dataPort + 2);
JavaTestKit probe1 = new JavaTestKit(system);
JavaTestKit probe2 = new JavaTestKit(system);
JavaTestKit probe3 = new JavaTestKit(system);
InstanceID instanceID1 = cm.registerTaskManager(
new ActorTaskManagerGateway(new AkkaActorGateway(probe1.getRef(), leaderSessionID)),
ici1,
hardwareDescription,
1);
InstanceID instanceID2 = cm.registerTaskManager(
new ActorTaskManagerGateway(new AkkaActorGateway(probe2.getRef(), leaderSessionID)),
ici2,
hardwareDescription,
1);
InstanceID instanceID3 = cm.registerTaskManager(
new ActorTaskManagerGateway(new AkkaActorGateway(probe3.getRef(), leaderSessionID)),
ici3,
hardwareDescription,
1);
// report some immediate heart beats
assertTrue(cm.reportHeartBeat(instanceID1));
assertTrue(cm.reportHeartBeat(instanceID2));
assertTrue(cm.reportHeartBeat(instanceID3));
// report heart beat for non-existing instance
assertFalse(cm.reportHeartBeat(new InstanceID()));
final long WAIT = 200;
CommonTestUtils.sleepUninterruptibly(WAIT);
Iterator<Instance> it = cm.getAllRegisteredInstances().iterator();
Instance instance1 = it.next();
long h1 = instance1.getLastHeartBeat();
long h2 = it.next().getLastHeartBeat();
long h3 = it.next().getLastHeartBeat();
// send one heart beat again and verify that the
assertTrue(cm.reportHeartBeat(instance1.getId()));
long newH1 = instance1.getLastHeartBeat();
long now = System.currentTimeMillis();
assertTrue(now - h1 >= WAIT);
assertTrue(now - h2 >= WAIT);
assertTrue(now - h3 >= WAIT);
assertTrue(now - newH1 <= WAIT);
cm.shutdown();
}
catch (Exception e) {
System.err.println(e.getMessage());
e.printStackTrace();
Assert.fail("Test erroneous: " + e.getMessage());
}
}
@Test
public void testShutdown() {
try {
InstanceManager cm = new InstanceManager();
cm.shutdown();
try {
ResourceID resID = ResourceID.generate();
HardwareDescription resources = HardwareDescription.extractFromSystem(4096);
InetAddress address = InetAddress.getByName("127.0.0.1");
TaskManagerLocation ici = new TaskManagerLocation(resID, address, 20000);
JavaTestKit probe = new JavaTestKit(system);
cm.registerTaskManager(
new ActorTaskManagerGateway(new AkkaActorGateway(probe.getRef(), leaderSessionID)),
ici,
resources,
1);
fail("Should raise exception in shutdown state");
}
catch (IllegalStateException e) {
// expected
}
assertFalse(cm.reportHeartBeat(new InstanceID()));
}
catch (Exception e) {
System.err.println(e.getMessage());
e.printStackTrace();
Assert.fail("Test erroneous: " + e.getMessage());
}
}
}