/**
* 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.hadoop.hbase.ipc;
import com.google.common.collect.ImmutableList;
import com.google.common.collect.ImmutableMap;
import com.google.common.collect.ImmutableSet;
import com.google.common.collect.Maps;
import com.google.protobuf.Message;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.HBaseConfiguration;
import org.apache.hadoop.hbase.HConstants;
import org.apache.hadoop.hbase.SmallTests;
import org.apache.hadoop.hbase.ipc.RpcServer.Call;
import org.apache.hadoop.hbase.protobuf.generated.RPCProtos;
import org.junit.Before;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import org.mockito.invocation.InvocationOnMock;
import org.mockito.stubbing.Answer;
import java.io.IOException;
import java.net.InetSocketAddress;
import java.util.List;
import java.util.Map;
import java.util.concurrent.CountDownLatch;
import static org.junit.Assert.assertEquals;
import static org.mockito.Matchers.anyObject;
import static org.mockito.Mockito.doAnswer;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.timeout;
import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.when;
@Category(SmallTests.class)
public class TestSimpleRpcScheduler {
private final RpcScheduler.Context CONTEXT = new RpcScheduler.Context() {
@Override
public InetSocketAddress getListenerAddress() {
return InetSocketAddress.createUnresolved("127.0.0.1", 1000);
}
};
private Configuration conf;
@Before
public void setUp() {
conf = HBaseConfiguration.create();
}
@Test
public void testBasic() throws IOException, InterruptedException {
PriorityFunction qosFunction = mock(PriorityFunction.class);
RpcScheduler scheduler = new SimpleRpcScheduler(
conf, 10, 0, 0, qosFunction, 0);
scheduler.init(CONTEXT);
scheduler.start();
CallRunner task = createMockTask();
scheduler.dispatch(task);
verify(task, timeout(1000)).run();
scheduler.stop();
}
@Test
public void testHandlerIsolation() throws IOException, InterruptedException {
CallRunner generalTask = createMockTask();
CallRunner priorityTask = createMockTask();
CallRunner replicationTask = createMockTask();
List<CallRunner> tasks = ImmutableList.of(
generalTask,
priorityTask,
replicationTask);
Map<CallRunner, Integer> qos = ImmutableMap.of(
generalTask, 0,
priorityTask, HConstants.HIGH_QOS + 1,
replicationTask, HConstants.REPLICATION_QOS);
PriorityFunction qosFunction = mock(PriorityFunction.class);
final Map<CallRunner, Thread> handlerThreads = Maps.newHashMap();
final CountDownLatch countDownLatch = new CountDownLatch(tasks.size());
Answer<Void> answerToRun = new Answer<Void>() {
@Override
public Void answer(InvocationOnMock invocationOnMock) throws Throwable {
synchronized (handlerThreads) {
handlerThreads.put(
(CallRunner) invocationOnMock.getMock(),
Thread.currentThread());
}
countDownLatch.countDown();
return null;
}
};
for (CallRunner task : tasks) {
doAnswer(answerToRun).when(task).run();
}
RpcScheduler scheduler = new SimpleRpcScheduler(
conf, 1, 1 ,1, qosFunction, HConstants.HIGH_QOS);
scheduler.init(CONTEXT);
scheduler.start();
for (CallRunner task : tasks) {
when(qosFunction.getPriority((RPCProtos.RequestHeader) anyObject(), (Message) anyObject()))
.thenReturn(qos.get(task));
scheduler.dispatch(task);
}
for (CallRunner task : tasks) {
verify(task, timeout(1000)).run();
}
scheduler.stop();
// Tests that these requests are handled by three distinct threads.
countDownLatch.await();
assertEquals(3, ImmutableSet.copyOf(handlerThreads.values()).size());
}
private CallRunner createMockTask() {
Call call = mock(Call.class);
CallRunner task = mock(CallRunner.class);
when(task.getCall()).thenReturn(call);
return task;
}
}