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Added IT for the Cluster Overview IT
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Mark Needham
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Jun 29, 2016
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137 changes: 137 additions & 0 deletions
137
enterprise/core-edge/src/test/java/org/neo4j/coreedge/scenarios/ClusterOverviewIT.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.scenarios; | ||
|
|
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| import java.util.List; | ||
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| import org.hamcrest.Description; | ||
| import org.hamcrest.Matcher; | ||
| import org.hamcrest.TypeSafeMatcher; | ||
| import org.junit.Rule; | ||
| import org.junit.Test; | ||
|
|
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| import org.neo4j.coreedge.discovery.Cluster; | ||
| import org.neo4j.coreedge.server.core.ClusterOverviewProcedure; | ||
| import org.neo4j.kernel.api.KernelAPI; | ||
| import org.neo4j.kernel.api.KernelTransaction; | ||
| import org.neo4j.kernel.api.KernelTransaction.Type; | ||
| import org.neo4j.kernel.api.Statement; | ||
| import org.neo4j.kernel.api.exceptions.ProcedureException; | ||
| import org.neo4j.kernel.api.exceptions.TransactionFailureException; | ||
| import org.neo4j.kernel.impl.factory.GraphDatabaseFacade; | ||
| import org.neo4j.test.coreedge.ClusterRule; | ||
|
|
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| import static org.hamcrest.MatcherAssert.assertThat; | ||
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| import static org.neo4j.helpers.collection.Iterators.asList; | ||
| import static org.neo4j.kernel.api.proc.ProcedureSignature.procedureName; | ||
| import static org.neo4j.kernel.api.security.AccessMode.Static.READ; | ||
|
|
||
| public class ClusterOverviewIT | ||
| { | ||
| @Rule | ||
| public final ClusterRule clusterRule = new ClusterRule( getClass() ) | ||
| .withNumberOfCoreServers( 3 ); | ||
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| @Test | ||
| public void shouldDiscoverCoreClusterMembers() throws Exception | ||
| { | ||
| // when | ||
| Cluster cluster = clusterRule.withNumberOfEdgeServers( 0 ).startCluster(); | ||
|
|
||
| // then | ||
|
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| List<Object[]> overview; | ||
| for ( int i = 0; i < 3; i++ ) | ||
| { | ||
| overview = clusterOverview( cluster.getCoreServerById( i ) ); | ||
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| assertThat( overview, containsLeader() ); | ||
| assertThat( overview, containsAddress( "127.0.0.1:8000" ) ); | ||
| assertThat( overview, containsAddress( "127.0.0.1:8001" ) ); | ||
| assertThat( overview, containsAddress( "127.0.0.1:8002" ) ); | ||
| } | ||
| } | ||
|
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| private Matcher<? super List<Object[]>> containsAddress(String address) | ||
| { | ||
| return new TypeSafeMatcher<List<Object[]>>() | ||
| { | ||
| @Override | ||
| public boolean matchesSafely( List<Object[]> overview ) | ||
| { | ||
| for ( Object[] row : overview ) | ||
| { | ||
| if ( row[1].toString().equals( address ) ) | ||
| { | ||
| return true; | ||
| } | ||
| } | ||
|
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| return false; | ||
| } | ||
|
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| @Override | ||
| public void describeTo( Description description ) | ||
| { | ||
| description.appendText( "Expected to find leader in the cluster but didn't" ); | ||
| } | ||
| }; | ||
| } | ||
|
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| private Matcher<? super List<Object[]>> containsLeader() | ||
| { | ||
| return new TypeSafeMatcher<List<Object[]>>() | ||
| { | ||
| @Override | ||
| public boolean matchesSafely( List<Object[]> overview ) | ||
| { | ||
| for ( Object[] row : overview ) | ||
| { | ||
| if ( row[2].toString().equals( "leader" ) ) | ||
| { | ||
| return true; | ||
| } | ||
| } | ||
|
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| return false; | ||
| } | ||
|
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| @Override | ||
| public void describeTo( Description description ) | ||
| { | ||
| description.appendText( "Expected to find leader in the cluster but didn't" ); | ||
| } | ||
| }; | ||
| } | ||
|
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| private List<Object[]> clusterOverview( GraphDatabaseFacade db ) throws TransactionFailureException, | ||
| ProcedureException | ||
| { | ||
| KernelAPI kernel = db.getDependencyResolver().resolveDependency( KernelAPI.class ); | ||
| KernelTransaction transaction = kernel.newTransaction( Type.implicit, READ ); | ||
| Statement statement = transaction.acquireStatement(); | ||
|
|
||
| // when | ||
| return asList( statement.readOperations().procedureCallRead( | ||
| procedureName( "dbms", "cluster", ClusterOverviewProcedure.NAME ), | ||
| new Object[0] ) ); | ||
| } | ||
| } |
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