/// <summary>
/// Main difference to <seealso cref="shouldCopyStoreFromMasterIfBranched()"/> is that no instances are shut down
/// during the course of the test. This to test functionality of some internal components being restarted.
/// </summary>
//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @SuppressWarnings("unchecked") @Test public void shouldCopyStoreFromMasterIfBranchedInLiveScenario() throws Throwable
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
public virtual void ShouldCopyStoreFromMasterIfBranchedInLiveScenario()
{
// GIVEN a cluster of 3, all having the same data (node A)
// thor is whoever is the master to begin with
// odin is whoever is picked as _the_ slave given thor as initial master
File storeDirectory = _directory.directory();
ClusterManager clusterManager = _life.add(new ClusterManager.Builder(storeDirectory)
.withSharedConfig(stringMap(HaSettings.tx_push_factor.name(), "0", HaSettings.pull_interval.name(), "0")).build());
ClusterManager.ManagedCluster cluster = clusterManager.Cluster;
cluster.Await(allSeesAllAsAvailable());
HighlyAvailableGraphDatabase thor = cluster.Master;
string indexName = "valhalla";
CreateNode(thor, "A", AndIndexInto(indexName));
cluster.Sync();
// WHEN creating a node B1 on thor (note the disabled cluster transaction propagation)
CreateNode(thor, "B1", AndIndexInto(indexName));
// and right after that failing the master so that it falls out of the cluster
HighlyAvailableGraphDatabase odin = cluster.AnySlave;
cluster.Info(format("%n ==== TAMPERING WITH " + thor + "'s CABLES ====%n"));
ClusterManager.RepairKit thorRepairKit = cluster.Fail(thor);
// try to create a transaction on odin until it succeeds
cluster.Await(ClusterManager.masterAvailable(thor));
cluster.Await(ClusterManager.memberThinksItIsRole(odin, HighAvailabilityModeSwitcher.MASTER));
assertTrue(odin.Master);
RetryOnTransactionFailure(odin, db => createNode(db, "B2", AndIndexInto(indexName)));
// perform transactions so that index files changes under the hood
ISet <File> odinLuceneFilesBefore = Iterables.asSet(GatherLuceneFiles(odin, indexName));
for (char prefix = 'C'; !Changed(odinLuceneFilesBefore, Iterables.asSet(GatherLuceneFiles(odin, indexName))); prefix++)
{
char fixedPrefix = prefix;
RetryOnTransactionFailure(odin, db => createNodes(odin, fixedPrefix.ToString(), 10_000, AndIndexInto(indexName)));
cluster.Force(); // Force will most likely cause lucene explicit indexes to commit and change file structure
}
// so anyways, when thor comes back into the cluster
cluster.Info(format("%n ==== REPAIRING CABLES ====%n"));
cluster.Await(memberThinksItIsRole(thor, UNKNOWN));
BranchMonitor thorHasBranched = InstallBranchedDataMonitor(cluster.GetMonitorsByDatabase(thor));
thorRepairKit.Repair();
cluster.Await(memberThinksItIsRole(thor, SLAVE));
cluster.Await(memberThinksItIsRole(odin, MASTER));
cluster.Await(allSeesAllAsAvailable());
assertFalse(thor.Master);
assertTrue("No store-copy performed", thorHasBranched.CopyCompleted);
assertTrue("Store-copy unsuccessful", thorHasBranched.CopySuccessful);
// Now do some more transactions on current master (odin) and have thor pull those
for (int i = 0; i < 3; i++)
{
int ii = i;
RetryOnTransactionFailure(odin, db => createNodes(odin, ("" + ii).ToString(), 10, AndIndexInto(indexName)));
cluster.Sync();
cluster.Force();
}
// THEN thor should be a slave, having copied a store from master and good to go
assertFalse(HasNode(thor, "B1"));
assertTrue(HasNode(thor, "B2"));
assertTrue(HasNode(thor, "C-0"));
assertTrue(HasNode(thor, "0-0"));
assertTrue(HasNode(odin, "0-0"));
}
