Examples with ClusterRule org.neo4j.test.causalclustering.ClusterRule used on opensource projects

Example 1 with ClusterRule

use of org.neo4j.test.causalclustering.ClusterRule in project neo4j by neo4j.

the class ReadReplicaHierarchicalCatchupIT method shouldCatchupThroughHierarchy.

@Test
public void shouldCatchupThroughHierarchy() throws Throwable {
    clusterRule = clusterRule.withInstanceReadReplicaParam(CausalClusteringSettings.server_groups, id -> serverGroups.get(id)).withInstanceCoreParam(CausalClusteringSettings.server_groups, id -> serverGroups.get(id));
    // given
    Cluster cluster = clusterRule.startCluster();
    int numberOfNodesToCreate = 100;
    cluster.coreTx((db, tx) -> {
        db.schema().constraintFor(label("Foo")).assertPropertyIsUnique("foobar").create();
        tx.success();
    });
    // 0, 1, 2 are core instances
    createLabelledNodesWithProperty(cluster, numberOfNodesToCreate, label("Foo"), () -> Pair.of("foobar", String.format("baz_bat%s", UUID.randomUUID())));
    // 3, 4 are other DCs
    ReadReplica east3 = cluster.addReadReplicaWithId(3);
    east3.start();
    ReadReplica west4 = cluster.addReadReplicaWithId(4);
    west4.start();
    checkDataHasReplicatedToReadReplicas(cluster, numberOfNodesToCreate);
    for (CoreClusterMember coreClusterMember : cluster.coreMembers()) {
        coreClusterMember.stopCatchupServer();
    }
    // 5, 6 are other DCs
    ReadReplica east5 = cluster.addReadReplicaWithId(5);
    east5.setUpstreamDatabaseSelectionStrategy("connect-within-data-center");
    east5.start();
    ReadReplica west6 = cluster.addReadReplicaWithId(6);
    west6.setUpstreamDatabaseSelectionStrategy("connect-within-data-center");
    west6.start();
    checkDataHasReplicatedToReadReplicas(cluster, numberOfNodesToCreate);
}