using System; using System.Collections.Generic; using System.Reflection; using log4net; using OpenMetaverse; using OpenSim.Services.Interfaces; namespace OpenSim.Services.HypergridService { public class UserAccountCache : IUserAccountService { private const double CACHE_EXPIRATION_SECONDS = 120000.0; // 33 hours! // private static readonly ILog m_log = // LogManager.GetLogger( // MethodBase.GetCurrentMethod().DeclaringType); private ExpiringCache<UUID, UserAccount> m_UUIDCache; private IUserAccountService m_UserAccountService; private static UserAccountCache m_Singleton; public static UserAccountCache CreateUserAccountCache(IUserAccountService u) { if (m_Singleton == null) m_Singleton = new UserAccountCache(u); return m_Singleton; } private UserAccountCache(IUserAccountService u) { m_UUIDCache = new ExpiringCache<UUID, UserAccount>(); m_UserAccountService = u; } public void Cache(UUID userID, UserAccount account) { // Cache even null accounts m_UUIDCache.AddOrUpdate(userID, account, CACHE_EXPIRATION_SECONDS); //m_log.DebugFormat("[USER CACHE]: cached user {0}", userID); } public UserAccount Get(UUID userID, out bool inCache) { UserAccount account = null; inCache = false; if (m_UUIDCache.TryGetValue(userID, out account)) { //m_log.DebugFormat("[USER CACHE]: Account {0} {1} found in cache", account.FirstName, account.LastName); inCache = true; return account; } return null; } public UserAccount GetUser(string id) { UUID uuid = UUID.Zero; UUID.TryParse(id, out uuid); bool inCache = false; UserAccount account = Get(uuid, out inCache); if (!inCache) { account = m_UserAccountService.GetUserAccount(UUID.Zero, uuid); Cache(uuid, account); } return account; } #region IUserAccountService public UserAccount GetUserAccount(UUID scopeID, UUID userID) { return GetUser(userID.ToString()); } public UserAccount GetUserAccount(UUID scopeID, string FirstName, string LastName) { return null; } public UserAccount GetUserAccount(UUID scopeID, string Email) { return null; } public List<UserAccount> GetUserAccounts(UUID scopeID, string query) { return null; } public bool StoreUserAccount(UserAccount data) { return false; } #endregion } }