//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @Test public void shouldCatchUpFromCoresWhenPreferredReadReplicasAreUnavailable() throws Throwable
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
public virtual void ShouldCatchUpFromCoresWhenPreferredReadReplicasAreUnavailable()
{
// given
//JAVA TO C# CONVERTER WARNING: Java wildcard generics have no direct equivalent in .NET:
//ORIGINAL LINE: org.neo4j.causalclustering.discovery.Cluster<?> cluster = clusterRule.startCluster();
Cluster <object> cluster = ClusterRule.startCluster();
int numberOfNodes = 1;
int firstReadReplicaLocalMemberId = 101;
cluster.CoreTx((db, tx) =>
{
Db.schema().constraintFor(label("Foo")).assertPropertyIsUnique("foobar").create();
tx.success();
});
createLabelledNodesWithProperty(cluster, numberOfNodes, label("Foo"), () => Pair.of("foobar", string.Format("baz_bat{0}", System.Guid.randomUUID())));
ReadReplica firstReadReplica = cluster.AddReadReplicaWithIdAndMonitors(firstReadReplicaLocalMemberId, new Monitors());
firstReadReplica.Start();
CheckDataHasReplicatedToReadReplicas(cluster, numberOfNodes);
upstreamFactory.Current = firstReadReplica;
ReadReplica secondReadReplica = cluster.AddReadReplicaWithId(202);
secondReadReplica.UpstreamDatabaseSelectionStrategy = "specific";
secondReadReplica.Start();
CheckDataHasReplicatedToReadReplicas(cluster, numberOfNodes);
firstReadReplica.Shutdown();
upstreamFactory.reset();
cluster.RemoveReadReplicaWithMemberId(firstReadReplicaLocalMemberId);
// when
// More transactions into core
createLabelledNodesWithProperty(cluster, numberOfNodes, label("Foo"), () => Pair.of("foobar", string.Format("baz_bat{0}", System.Guid.randomUUID())));
// then
// reached second read replica from cores
CheckDataHasReplicatedToReadReplicas(cluster, numberOfNodes * 2);
}
//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @Test public void shouldEventuallyPullTransactionAcrossReadReplicas() throws Throwable
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
public virtual void ShouldEventuallyPullTransactionAcrossReadReplicas()
{
// given
//JAVA TO C# CONVERTER WARNING: Java wildcard generics have no direct equivalent in .NET:
//ORIGINAL LINE: org.neo4j.causalclustering.discovery.Cluster<?> cluster = clusterRule.startCluster();
Cluster <object> cluster = ClusterRule.startCluster();
int numberOfNodesToCreate = 100;
cluster.CoreTx((db, tx) =>
{
Db.schema().constraintFor(label("Foo")).assertPropertyIsUnique("foobar").create();
tx.success();
});
createLabelledNodesWithProperty(cluster, numberOfNodesToCreate, label("Foo"), () => Pair.of("foobar", string.Format("baz_bat{0}", System.Guid.randomUUID())));
ReadReplica firstReadReplica = cluster.AddReadReplicaWithIdAndMonitors(101, new Monitors());
firstReadReplica.Start();
CheckDataHasReplicatedToReadReplicas(cluster, numberOfNodesToCreate);
foreach (CoreClusterMember coreClusterMember in cluster.CoreMembers())
{
coreClusterMember.DisableCatchupServer();
}
// when
upstreamFactory.Current = firstReadReplica;
ReadReplica secondReadReplica = cluster.AddReadReplicaWithId(202);
secondReadReplica.UpstreamDatabaseSelectionStrategy = "specific";
secondReadReplica.Start();
// then
CheckDataHasReplicatedToReadReplicas(cluster, numberOfNodesToCreate);
}
//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @Test public void shouldEventuallyPullTransactionDownToAllReadReplicas() throws Exception
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
public virtual void ShouldEventuallyPullTransactionDownToAllReadReplicas()
{
// given
//JAVA TO C# CONVERTER WARNING: Java wildcard generics have no direct equivalent in .NET:
//ORIGINAL LINE: org.neo4j.causalclustering.discovery.Cluster<?> cluster = clusterRule.withNumberOfReadReplicas(0).startCluster();
Cluster <object> cluster = ClusterRule.withNumberOfReadReplicas(0).startCluster();
int nodesBeforeReadReplicaStarts = 1;
cluster.CoreTx((db, tx) =>
{
Db.schema().constraintFor(Label.label("Foo")).assertPropertyIsUnique("foobar").create();
tx.success();
});
// when
for (int i = 0; i < 100; i++)
{
cluster.CoreTx((db, tx) =>
{
createData(db, nodesBeforeReadReplicaStarts);
tx.success();
});
}
ISet <Path> labelScanStoreFiles = new HashSet <Path>();
cluster.CoreTx((db, tx) => gatherLabelScanStoreFiles(db, labelScanStoreFiles));
AtomicBoolean labelScanStoreCorrectlyPlaced = new AtomicBoolean(false);
Monitors monitors = new Monitors();
ReadReplica rr = cluster.AddReadReplicaWithIdAndMonitors(0, monitors);
monitors.AddMonitorListener((FileCopyMonitor)file =>
{
if (labelScanStoreFiles.Contains(file.toPath().FileName))
{
labelScanStoreCorrectlyPlaced.set(true);
}
});
rr.Start();
for (int i = 0; i < 100; i++)
{
cluster.CoreTx((db, tx) =>
{
createData(db, nodesBeforeReadReplicaStarts);
tx.success();
});
}
// then
foreach (ReadReplica server in cluster.ReadReplicas())
{
GraphDatabaseService readReplica = server.database();
using (Transaction tx = readReplica.BeginTx())
{
ThrowingSupplier <long, Exception> nodeCount = () => count(readReplica.AllNodes);
assertEventually("node to appear on read replica", nodeCount, @is(400L), 1, MINUTES);
foreach (Node node in readReplica.AllNodes)
{
assertThat(node.GetProperty("foobar").ToString(), startsWith("baz_bat"));
}
tx.Success();
}
}
assertTrue(labelScanStoreCorrectlyPlaced.get());
}