public static void Initialize(Enyim.Caching.Configuration.MemcachedClientConfiguration config)
{
if (client != null)
{
throw new Exception("MemcachedClient has already been initialized");
}
client = new MemcachedClient(config);
}
protected override Enyim.Caching.Memcached.Results.IStoreOperationResult PerformStore(Enyim.Caching.Memcached.StoreMode mode, string key, object value, uint expires, ref ulong cas, out int statusCode)
{
if (String.IsNullOrEmpty(key))
{
throw new ArgumentNullOrEmptyException("key");
}
if (value == null)
{
throw new ArgumentNullException("value");
}
DataCacheItem valueAsItem = value as DataCacheItem;
if (valueAsItem == null)
{
throw new ArgumentException(String.Format("不支持类型为 {0} 的缓存项", value.GetType().FullName), "value");
}
var hashedKey = this.KeyTransformer.Transform(key);
var node = this.Pool.Locate(hashedKey);
var result = StoreOperationResultFactory.Create();
statusCode = -1;
if (node != null)
{
IDebugableCachedItem valueAsDebugableItem = valueAsItem.Value as IDebugableCachedItem;
if(valueAsDebugableItem != null)
{
valueAsDebugableItem.Server = node.EndPoint.Address.ToString();
valueAsDebugableItem.Port = node.EndPoint.Port;
}
CacheItem item;
try { item = this.Transcoder.Serialize(value); }
catch (Exception e)
{
if (valueAsDebugableItem != null)
{
valueAsDebugableItem.Server = null;
valueAsDebugableItem.Port = default(int);
}
//log.Error(e);
if (this.PerformanceMonitor != null) this.PerformanceMonitor.Store(mode, 1, false);
//result.Fail("PerformStore failed", e);
//return result;
throw e;
}
var command = this.Pool.OperationFactory.Store(mode, hashedKey, item, expires, cas);
var commandResult = node.Execute(command);
result.Cas = cas = command.CasValue;
result.StatusCode = statusCode = command.StatusCode;
if (commandResult.Success)
{
if (this.PerformanceMonitor != null) this.PerformanceMonitor.Store(mode, 1, true);
result.Pass();
return result;
}
else
{
if (valueAsDebugableItem != null)
{
valueAsDebugableItem.Server = null;
valueAsDebugableItem.Port = default(int);
}
//commandResult.Combine(result);
//return result;
throw new CacheException(String.Format("执行缓存存储操作时发生错误，原始返回结果为：{0}", XMS.Core.Formatter.PlainObjectFormatter.Simplified.Format(result)));
}
}
if (this.PerformanceMonitor != null) this.PerformanceMonitor.Store(mode, 1, false);
//result.Fail("Unable to locate node");
//return result;
throw new CacheException("缓存服务器不可用", new System.ServiceModel.EndpointNotFoundException("未找到可用的缓存服务器节点"));
}
