//JAVA TO C# CONVERTER TODO TASK: Most Java annotations will not have direct .NET equivalent attributes:
//ORIGINAL LINE: @Test public void leaderShouldStepDownWhenFollowersAreGone() throws Throwable
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
public virtual void LeaderShouldStepDownWhenFollowersAreGone()
{
// when
//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();
//Do some work to make sure the cluster is operating normally.
CoreClusterMember leader = cluster.CoreTx((db, tx) =>
{
Node node = Db.createNode(Label.label("bam"));
node.setProperty("bam", "bam");
tx.success();
});
ThrowingSupplier <IList <CoreClusterMember>, Exception> followers = () => cluster.CoreMembers().Where(m => m.raft().currentRole() != Role.LEADER).ToList();
assertEventually("All followers visible", followers, Matchers.hasSize(7), 2, TimeUnit.MINUTES);
//when
//shutdown 4 servers, leaving 4 remaining and therefore not a quorum.
followers.Get().subList(0, 4).forEach(CoreClusterMember.shutdown);
//then
assertEventually("Leader should have stepped down.", () => leader.Raft().Leader, Matchers.@is(false), 2, TimeUnit.MINUTES);
}
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
//ORIGINAL LINE: private T getOrCreatePart(Offset key, org.neo4j.function.ThrowingSupplier<T,java.io.IOException> factory) throws java.io.UncheckedIOException
private T GetOrCreatePart(Offset key, ThrowingSupplier <T, IOException> factory)
{
T existing = Cache[key];
if (existing != default(T))
{
return(existing);
}
// Instantiate from factory. Do this under lock so that we coordinate with any concurrent call to close.
// Concurrent calls to instantiating parts won't contend with each other since there's only
// a single writer at a time anyway.
InstantiateCloseLock.@lock();
try
{
AssertOpen();
return(Cache.computeIfAbsent(key, k =>
{
try
{
return factory.Get();
}
catch (IOException e)
{
throw new UncheckedIOException(e);
}
}));
}
finally
{
InstantiateCloseLock.unlock();
}
}
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
//ORIGINAL LINE: private ProgressiveState<String> stateWithLookup(org.neo4j.function.ThrowingSupplier<bool, java.io.IOException> valueSupplier) throws java.io.IOException
private ProgressiveState <string> StateWithLookup(ThrowingSupplier <bool, IOException> valueSupplier)
{
ProgressiveState <string> state = mock(typeof(ProgressiveState));
when(state.lookup(any(), any())).thenAnswer(invocation =>
{
bool wasFound = valueSupplier.Get();
invocation.getArgument <ValueLookup <string> >(1).value(null);
return(wasFound);
});
return(state);
}
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
//ORIGINAL LINE: public static <EXCEPTION extends Exception> boolean tryAwaitEx(ThrowingSupplier<bool,EXCEPTION> condition, long timeout, java.util.concurrent.TimeUnit timeoutUnit, long pollInterval, java.util.concurrent.TimeUnit pollUnit, java.time.Clock clock) throws EXCEPTION
public static bool TryAwaitEx <EXCEPTION>(ThrowingSupplier <bool, EXCEPTION> condition, long timeout, TimeUnit timeoutUnit, long pollInterval, TimeUnit pollUnit, Clock clock) where EXCEPTION : Exception
{
long deadlineMillis = clock.millis() + timeoutUnit.toMillis(timeout);
long pollIntervalNanos = pollUnit.toNanos(pollInterval);
do
{
if (condition.Get())
{
return(true);
}
LockSupport.parkNanos(pollIntervalNanos);
} while (clock.millis() < deadlineMillis);
return(false);
}