private Optional <AdvertisedSocketAddress> LeaderBoltAddress()
{
MemberId leader;
try
{
leader = _leaderLocator.Leader;
}
catch (NoLeaderFoundException)
{
_log.debug("No leader server found. This can happen during a leader switch. No write end points available");
return(null);
}
return(_topologyService.localCoreServers().find(leader).map(extractBoltAddress()));
}
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
//ORIGINAL LINE: public org.neo4j.causalclustering.routing.load_balancing.LoadBalancingProcessor_Result run(java.util.Map<String,String> context) throws org.neo4j.internal.kernel.api.exceptions.ProcedureException
public override Org.Neo4j.causalclustering.routing.load_balancing.LoadBalancingProcessor_Result Run(IDictionary <string, string> context)
{
Policy policy = _policies.selectFor(context);
CoreTopology coreTopology = _topologyService.localCoreServers();
ReadReplicaTopology rrTopology = _topologyService.localReadReplicas();
return(new LoadBalancingResult(RouteEndpoints(coreTopology), WriteEndpoints(coreTopology), ReadEndpoints(coreTopology, rrTopology, policy), _timeToLive.Value));
}
private Optional <MemberId> RandomCoreMember()
{
IList <MemberId> coreMembersNotSelf = TopologyService.localCoreServers().members().Keys.Where(not(Myself.equals)).ToList();
Collections.shuffle(coreMembersNotSelf);
if (coreMembersNotSelf.Count == 0)
{
return(null);
}
return(coreMembersNotSelf[0]);
}
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in C#:
//ORIGINAL LINE: public java.util.Optional<org.neo4j.causalclustering.identity.MemberId> upstreamDatabase() throws org.neo4j.causalclustering.upstream.UpstreamDatabaseSelectionException
public override Optional <MemberId> UpstreamDatabase()
{
//JAVA TO C# CONVERTER WARNING: The original Java variable was marked 'final':
//ORIGINAL LINE: final org.neo4j.causalclustering.discovery.CoreTopology coreTopology = topologyService.localCoreServers();
CoreTopology coreTopology = TopologyService.localCoreServers();
if (coreTopology.Members().Count == 0)
{
throw new UpstreamDatabaseSelectionException("No core servers available");
}
int skippedServers = _random.Next(coreTopology.Members().Count);
return(coreTopology.Members().Keys.Skip(skippedServers).First());
}
public override Optional <MemberId> UpstreamDatabase()
{
if (_counter.shouldReturnCoreMemberId())
{
return(RandomCoreMember());
}
else
{
// shuffled members
IList <MemberId> readReplicaMembers = new List <MemberId>(TopologyService.localReadReplicas().members().Keys);
Collections.shuffle(readReplicaMembers);
IList <MemberId> coreMembers = new List <MemberId>(TopologyService.localCoreServers().members().Keys);
Collections.shuffle(coreMembers);
return(Stream.concat(readReplicaMembers.stream(), coreMembers.stream()).filter(not(Myself.equals)).findFirst());
}
}
private ISet <ServerInfo> PossibleServers()
{
//JAVA TO C# CONVERTER WARNING: Java wildcard generics have no direct equivalent in .NET:
//ORIGINAL LINE: java.util.stream.Stream<java.util.Map.Entry<org.neo4j.causalclustering.identity.MemberId,? extends org.neo4j.causalclustering.discovery.DiscoveryServerInfo>> infoMap = java.util.stream.Stream.of(topologyService.localReadReplicas(), topologyService.localCoreServers()).map(org.neo4j.causalclustering.discovery.Topology::members).map(java.util.Map::entrySet).flatMap(java.util.Set::stream);
//JAVA TO C# CONVERTER TODO TASK: Method reference arbitrary object instance method syntax is not converted by Java to C# Converter:
Stream <KeyValuePair <MemberId, ? extends DiscoveryServerInfo> > infoMap = Stream.of(TopologyService.localReadReplicas(), TopologyService.localCoreServers()).map(Topology::members).map(System.Collections.IDictionary.entrySet).flatMap(ISet <object> .stream);
return(infoMap.map(this.toServerInfo).collect(Collectors.toSet()));
}