basicDescriptorCache = createBasicDescriptorCache(store);
routersByIdentity = new HashMap<HexDigest, RouterImpl>();
routersByNickname = new HashMap<String, RouterImpl>();
directoryCaches = new RandomSet<RouterImpl>();
requiredCertificates = new HashSet<ConsensusDocument.RequiredCertificate>();
consensusChangedManager = new EventManager();
random = new TorRandom();
}