Examples with ServerInfo org.neo4j.causalclustering.load_balancing.plugins.server_policies.ServerInfo used on opensource projects

Example 1 with ServerInfo

use of org.neo4j.causalclustering.load_balancing.plugins.server_policies.ServerInfo in project neo4j by neo4j.

the class UserDefinedConfigurationStrategy method upstreamDatabase.

@Override
public Optional<MemberId> upstreamDatabase() throws UpstreamDatabaseSelectionException {
    try {
        Filter<ServerInfo> filters = FilterConfigParser.parse(config.get(CausalClusteringSettings.user_defined_upstream_selection_strategy));
        Set<ServerInfo> possibleReaders = topologyService.readReplicas().members().entrySet().stream().map(entry -> new ServerInfo(entry.getValue().connectors().boltAddress(), entry.getKey(), entry.getValue().groups())).collect(Collectors.toSet());
        CoreTopology coreTopology = topologyService.coreServers();
        for (MemberId validCore : coreTopology.members().keySet()) {
            Optional<CoreServerInfo> coreServerInfo = coreTopology.find(validCore);
            if (coreServerInfo.isPresent()) {
                CoreServerInfo serverInfo = coreServerInfo.get();
                possibleReaders.add(new ServerInfo(serverInfo.connectors().boltAddress(), validCore, serverInfo.groups()));
            }
        }
        return filters.apply(possibleReaders).stream().map(ServerInfo::memberId).findAny();
    } catch (InvalidFilterSpecification invalidFilterSpecification) {
        return Optional.empty();
    }
}