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UnavailableIT.java
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UnavailableIT.java
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/*
* Copyright (c) 2002-2017 "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.causalclustering.scenarios;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import org.neo4j.causalclustering.discovery.Cluster;
import org.neo4j.causalclustering.discovery.ClusterMember;
import org.neo4j.graphdb.Transaction;
import org.neo4j.kernel.AvailabilityGuard;
import org.neo4j.kernel.api.exceptions.Status;
import org.neo4j.kernel.internal.GraphDatabaseAPI;
import org.neo4j.test.causalclustering.ClusterRule;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.fail;
import static org.neo4j.kernel.api.exceptions.Status.statusCodeOf;
public class UnavailableIT
{
@Rule
public final ClusterRule clusterRule = new ClusterRule( getClass() ).withNumberOfCoreMembers( 3 );
private Cluster cluster;
@Before
public void setup() throws Exception
{
cluster = clusterRule.startCluster();
}
@Test
public void shouldReturnUnavailableStatusWhenDoingLongOperation() throws Exception
{
// given
ClusterMember member = cluster.getCoreMemberById( 1 );
// when
member.database().getDependencyResolver().resolveDependency( AvailabilityGuard.class )
.require( () -> "Not doing long operation" );
// then
try ( Transaction tx = member.database().beginTx() )
{
tx.success();
fail();
}
catch ( Exception e )
{
assertEquals( Status.General.DatabaseUnavailable, statusCodeOf( e ) );
}
}
@Test
public void shouldReturnUnavailableStatusWhenShutdown() throws Exception
{
// given
ClusterMember member = cluster.getCoreMemberById( 1 );
// when
GraphDatabaseAPI db = member.database();
member.shutdown();
// then
try ( Transaction tx = db.beginTx() )
{
tx.success();
fail();
}
catch ( Exception e )
{
assertEquals( Status.General.DatabaseUnavailable, statusCodeOf( e ) );
}
}
}