private HighlyAvailableGraphDatabase GetNthSlave( ClusterManager.ManagedCluster cluster, int slaveOrder )
{
Debug.Assert( slaveOrder > 0 );
HighlyAvailableGraphDatabase slave = null;
IList<HighlyAvailableGraphDatabase> excluded = new List<HighlyAvailableGraphDatabase>();
while ( slaveOrder-- > 0 )
{
slave = cluster.GetAnySlave( ToArray( excluded ) );
excluded.Add( slave );
}
return slave;
}
//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @Before public void setup() throws Throwable
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
public virtual void Setup()
{
// setup a cluster with some data and entries in log files in fully functional and shutdown state
ClusterManager.ManagedCluster cluster = ClusterRule.startCluster();
try
{
cluster.Await(allSeesAllAsAvailable());
OldMaster = cluster.Master;
CreateSomeData(OldMaster);
cluster.Sync();
OldSlave1 = cluster.AnySlave;
OldSlave2 = cluster.GetAnySlave(OldSlave1);
}
finally
{
ClusterRule.shutdownCluster();
}
AssertAllStoreConsistent(cluster);
}
//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @Test public void losingQuorumAbruptlyShouldMakeAllInstancesPendingAndReadOnly() throws Throwable
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
public virtual void LosingQuorumAbruptlyShouldMakeAllInstancesPendingAndReadOnly()
{
int clusterSize = 5; // we need 5 to differentiate between all other instances gone and just quorum being gone
assumeTrue(TestRunConditions.shouldRunAtClusterSize(clusterSize));
ClusterManager manager = (new ClusterManager.Builder()).withRootDirectory(Dir.cleanDirectory("testcluster")).withCluster(ClusterManager.clusterOfSize(clusterSize)).withSharedConfig(Config()).build();
try
{
manager.Start();
ClusterManager.ManagedCluster cluster = manager.Cluster;
cluster.Await(allSeesAllAsAvailable());
cluster.Await(masterAvailable());
HighlyAvailableGraphDatabase master = cluster.Master;
AddSomeData(master);
/*
* we need 3 failures. We'll end up with the old master and a slave connected. They should both be in
* PENDING state, allowing reads but not writes. Repairing just one of the removed instances should
* result in a master being elected and all instances being read and writable.
* The instances we remove do not need additional verification for their state. Their behaviour is already
* known by other tests.
*/
HighlyAvailableGraphDatabase failed1;
ClusterManager.RepairKit rk1;
HighlyAvailableGraphDatabase failed2;
HighlyAvailableGraphDatabase failed3;
HighlyAvailableGraphDatabase remainingSlave;
failed1 = cluster.AnySlave;
failed2 = cluster.GetAnySlave(failed1);
failed3 = cluster.GetAnySlave(failed1, failed2);
remainingSlave = cluster.GetAnySlave(failed1, failed2, failed3);
System.Threading.CountdownEvent masterTransitionLatch = new System.Threading.CountdownEvent(1);
System.Threading.CountdownEvent slaveTransitionLatch = new System.Threading.CountdownEvent(1);
SetupForWaitOnSwitchToDetached(master, masterTransitionLatch);
SetupForWaitOnSwitchToDetached(remainingSlave, slaveTransitionLatch);
rk1 = KillAbruptly(cluster, failed1, failed2, failed3);
cluster.Await(memberSeesOtherMemberAsFailed(remainingSlave, failed1));
cluster.Await(memberSeesOtherMemberAsFailed(remainingSlave, failed2));
cluster.Await(memberSeesOtherMemberAsFailed(remainingSlave, failed3));
cluster.Await(memberSeesOtherMemberAsFailed(master, failed1));
cluster.Await(memberSeesOtherMemberAsFailed(master, failed2));
cluster.Await(memberSeesOtherMemberAsFailed(master, failed3));
masterTransitionLatch.await();
slaveTransitionLatch.await();
EnsureInstanceIsReadOnlyInPendingState(master);
EnsureInstanceIsReadOnlyInPendingState(remainingSlave);
rk1.Repair();
cluster.Await(masterAvailable(failed2, failed3));
cluster.Await(masterSeesSlavesAsAvailable(2));
EnsureInstanceIsWritable(master);
EnsureInstanceIsWritable(remainingSlave);
EnsureInstanceIsWritable(failed1);
}
finally
{
manager.Shutdown();
}
}