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SharedDiscoveryServiceIT.java
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SharedDiscoveryServiceIT.java
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/*
* Copyright (c) 2002-2016 "Neo Technology,"
* Network Engine for Objects in Lund AB [http://neotechnology.com]
*
* This file is part of Neo4j.
*
* Neo4j is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.neo4j.coreedge.discovery;
import org.junit.Test;
import org.mockito.ArgumentCaptor;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.List;
import java.util.Set;
import java.util.UUID;
import java.util.concurrent.Callable;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;
import org.neo4j.coreedge.core.CoreEdgeClusterSettings;
import org.neo4j.coreedge.core.consensus.RaftMachine;
import org.neo4j.coreedge.identity.MemberId;
import org.neo4j.graphdb.factory.GraphDatabaseSettings;
import org.neo4j.kernel.configuration.Config;
import org.neo4j.kernel.impl.util.Neo4jJobScheduler;
import org.neo4j.logging.NullLogProvider;
import static java.util.concurrent.TimeUnit.MILLISECONDS;
import static org.hamcrest.Matchers.equalTo;
import static org.junit.Assert.fail;
import static org.mockito.Mockito.atLeastOnce;
import static org.mockito.Mockito.mock;
import static org.mockito.Mockito.verify;
import static org.neo4j.helpers.collection.MapUtil.stringMap;
import static org.neo4j.test.assertion.Assert.assertEventually;
public class SharedDiscoveryServiceIT
{
private static final long TIMEOUT_MS = 15_000;
private static final long RUN_TIME_MS = 1000;;
private NullLogProvider logProvider = NullLogProvider.getInstance();
private NullLogProvider userLogProvider = NullLogProvider.getInstance();
@Test(timeout = TIMEOUT_MS)
public void shouldDiscoverCompleteTargetSetWithoutDeadlocks() throws Exception
{
// given
ExecutorService es = Executors.newCachedThreadPool();
long endTimeMillis = System.currentTimeMillis() + RUN_TIME_MS;
while ( endTimeMillis > System.currentTimeMillis() )
{
Set<MemberId> members = new HashSet<>();
for ( int i = 0; i < 3; i++ )
{
members.add( new MemberId( UUID.randomUUID() ) );
}
SharedDiscoveryService sharedService = new SharedDiscoveryService();
List<Callable<Void>> discoveryJobs = new ArrayList<>();
for ( MemberId member : members )
{
discoveryJobs.add( createDiscoveryJob( member, sharedService, members ) );
}
List<Future<Void>> results = es.invokeAll( discoveryJobs );
for ( Future<Void> result : results )
{
result.get( TIMEOUT_MS, MILLISECONDS );
}
}
}
private Callable<Void> createDiscoveryJob( MemberId member, DiscoveryServiceFactory disoveryServiceFactory, Set<MemberId> expectedTargetSet ) throws ExecutionException, InterruptedException
{
Neo4jJobScheduler jobScheduler = new Neo4jJobScheduler();
jobScheduler.init();
CoreTopologyService topologyService = disoveryServiceFactory.coreTopologyService( config(), member,
jobScheduler, logProvider, userLogProvider );
return sharedClientStarter( topologyService, expectedTargetSet );
}
private Config config()
{
return new Config( stringMap(
CoreEdgeClusterSettings.raft_advertised_address.name(), "127.0.0.1:7000",
CoreEdgeClusterSettings.transaction_advertised_address.name(), "127.0.0.1:7001",
new GraphDatabaseSettings.BoltConnector( "bolt" ).enabled.name(), "true",
new GraphDatabaseSettings.BoltConnector( "bolt" ).advertised_address.name(), "127.0.0.1:7002" ) );
}
private Callable<Void> sharedClientStarter( CoreTopologyService topologyService, Set<MemberId> expectedTargetSet )
{
return () ->
{
try
{
RaftMachine raftMock = mock( RaftMachine.class );
topologyService.start();
topologyService.addCoreTopologyListener( new RaftDiscoveryServiceConnector( topologyService, raftMock ) );
assertEventually( "should discover complete target set", () ->
{
ArgumentCaptor<Set<MemberId>> targetMembers = ArgumentCaptor.forClass( (Class<Set<MemberId>>) expectedTargetSet.getClass() );
verify( raftMock, atLeastOnce() ).setTargetMembershipSet( targetMembers.capture() );
return targetMembers.getValue();
}, equalTo( expectedTargetSet ), TIMEOUT_MS, MILLISECONDS );
}
catch ( Throwable throwable )
{
fail( throwable.getMessage() );
}
return null;
};
}
}