/*
* 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.ignite.spi.loadbalancing.internal;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import java.util.UUID;
import org.apache.ignite.Ignite;
import org.apache.ignite.IgniteException;
import org.apache.ignite.cluster.ClusterNode;
import org.apache.ignite.compute.ComputeJob;
import org.apache.ignite.compute.ComputeJobAdapter;
import org.apache.ignite.compute.ComputeJobResult;
import org.apache.ignite.compute.ComputeTaskSession;
import org.apache.ignite.compute.ComputeTaskSplitAdapter;
import org.apache.ignite.configuration.IgniteConfiguration;
import org.apache.ignite.internal.processors.task.GridInternal;
import org.apache.ignite.internal.visor.VisorTaskArgument;
import org.apache.ignite.internal.visor.node.VisorNodePingTask;
import org.apache.ignite.internal.visor.node.VisorNodePingTaskArg;
import org.apache.ignite.internal.visor.node.VisorNodePingTaskResult;
import org.apache.ignite.spi.IgniteSpiAdapter;
import org.apache.ignite.spi.IgniteSpiException;
import org.apache.ignite.spi.IgniteSpiMultipleInstancesSupport;
import org.apache.ignite.spi.loadbalancing.LoadBalancingSpi;
import org.apache.ignite.testframework.junits.common.GridCommonAbstractTest;
import org.jetbrains.annotations.Nullable;
/**
* Test that will start two nodes with custom load balancing SPI and execute {@link GridInternal} task on it.
*/
public class GridInternalTasksLoadBalancingSelfTest extends GridCommonAbstractTest {
/** Grid count. */
private static final int GRID_CNT = 2;
/** Expected job result. */
private static final String JOB_RESULT = "EXPECTED JOB RESULT";
/** Expected task result. */
private static final String TASK_RESULT = JOB_RESULT + JOB_RESULT;
/** */
private static Ignite ignite;
/** If {@code true} then special custom load balancer SPI will be used. */
private static boolean customLoadBalancer = true;
/** {@inheritDoc} */
@Override protected void afterTest() throws Exception {
stopAllGrids();
}
/** {@inheritDoc} */
@Override protected IgniteConfiguration getConfiguration(String igniteInstanceName) throws Exception {
IgniteConfiguration cfg = super.getConfiguration(igniteInstanceName);
if (customLoadBalancer)
cfg.setLoadBalancingSpi(new CustomLoadBalancerSpi());
return cfg;
}
/**
* This test execute internal tasks over grid with custom balancer.
*
* @throws Exception In case of error.
*/
public void testInternalTaskBalancing() throws Exception {
customLoadBalancer = true;
ignite = startGrids(GRID_CNT);
// Task with GridInternal should pass.
assertEquals(TASK_RESULT, ignite.compute().execute(GridInternalTestTask.class.getName(), null));
// Visor task should pass.
UUID nid = ignite.cluster().localNode().id();
VisorNodePingTaskResult ping = ignite.compute()
.execute(VisorNodePingTask.class.getName(),
new VisorTaskArgument<>(nid, new VisorNodePingTaskArg(nid), false));
assertTrue(ping.isAlive());
// Custom task should fail, because special test load balancer SPI returns null as balanced node.
try {
ignite.compute().execute(CustomTestTask.class.getName(), null);
}
catch (IgniteException e) {
assertTrue(e.getMessage().startsWith("Node can not be null [mappedJob=org.apache.ignite.spi.loadbalancing.internal.GridInternalTasksLoadBalancingSelfTest$CustomTestJob"));
}
}
/**
* This test execute internal tasks over grid with default balancer.
*
* @throws Exception In case of error.
*/
public void testInternalTaskDefaultBalancing() throws Exception {
customLoadBalancer = false;
ignite = startGrids(GRID_CNT);
// Task with GridInternal should pass.
assertEquals(TASK_RESULT, ignite.compute().execute(GridInternalTestTask.class.getName(), null));
// Visor task should pass.
UUID nid = ignite.cluster().localNode().id();
VisorNodePingTaskResult ping = ignite.compute()
.execute(VisorNodePingTask.class.getName(),
new VisorTaskArgument<>(nid, new VisorNodePingTaskArg(nid), false));
assertTrue(ping.isAlive());
// Custom task should pass.
assertEquals(TASK_RESULT, ignite.compute().execute(CustomTestTask.class.getName(), null));
}
/**
* Test task.
*/
private static class CustomTestTask extends ComputeTaskSplitAdapter<Object, Object> {
/** {@inheritDoc} */
@Override protected Collection<? extends ComputeJob> split(int gridSize, Object arg) {
Collection<ComputeJob> jobs = new ArrayList<>(gridSize);
for (int i = 0; i < gridSize; i++)
jobs.add(new CustomTestJob());
return jobs;
}
/** {@inheritDoc} */
@Override public Serializable reduce(List<ComputeJobResult> results) {
assert results != null;
String res = "";
for (ComputeJobResult jobRes : results)
res += jobRes.getData();
return res;
}
}
/**
* Test job.
*/
private static class CustomTestJob extends ComputeJobAdapter {
/** {@inheritDoc} */
@Override public String execute() {
return JOB_RESULT;
}
}
/**
* Test task marked with @GridInternal.
*/
@GridInternal
private static class GridInternalTestTask extends CustomTestTask{
}
/**
* Special test balancer that will do not any balancing.
*/
@IgniteSpiMultipleInstancesSupport(true)
private static class CustomLoadBalancerSpi extends IgniteSpiAdapter implements LoadBalancingSpi {
/** {@inheritDoc} */
@Override public void spiStart(@Nullable String igniteInstanceName) throws IgniteSpiException {
// No-op.
}
/** {@inheritDoc} */
@Override public void spiStop() throws IgniteSpiException {
// No-op.
}
/** {@inheritDoc} */
@Override public ClusterNode getBalancedNode(ComputeTaskSession ses, List<ClusterNode> top, ComputeJob job) throws IgniteException {
return null; // Intentionally return null.
}
}
}