/// <summary>
/// 是否启用负载均衡
/// </summary>
public static bool IsLoadBalance(string contract)
{
Init();
string server_name = GetServerName(contract);
WcfClentBinding bing = GetWcfClientConst(server_name);
bool flag = bing.LoadBalance.IsUsed;
//如果启用负载均衡，则启动监听心跳
if (flag && !wcfClentConstantList[server_name].LoadBalance.BalanceAlgorithm.IsNewInstance)
{
LoadBalanceConfig balance = wcfClentConstantList[server_name].LoadBalance;
balance.BalanceAlgorithm.NewInstance(balance.WcfAdress, GetBing(contract));
}
return(flag);
}
/// <summary>
/// 客户端常量设置配值类
/// </summary>
/// <param name="doc"></param>
public WcfClentConstantSettingConfig(XmlDocument doc)
{
mlist = new Dictionary <string, WcfClentBinding>();
try
{
foreach (XmlElement elem in XmlHelper.Children(doc.DocumentElement, "Servers"))
{
foreach (XmlElement xe in XmlHelper.Children(elem, "Server"))
{
var name = xe.GetAttribute("name");
XmlElement xe1 = XmlHelper.Child(xe, "Binding");
Binding bindType = new NetTcpBinding();
WcfClentBinding bing = new WcfClentBinding()
{
BindingType = bindType,
MaxBufferPoolSize = Convert.ToInt32(xe1.Attributes["MaxBufferPoolSize"].Value),
MaxBufferSize = Convert.ToInt32(xe1.Attributes["MaxBufferSize"].Value),
MaxReceivedMessageSize = Convert.ToInt32(xe1.Attributes["MaxReceivedMessageSize"].Value),
MaxConnections = Convert.ToInt32(xe1.Attributes["MaxConnections"].Value),
ListenBacklog = Convert.ToInt32(xe1.Attributes["ListenBacklog"].Value),
SendTimeout = TimeSpan.Parse(xe1.Attributes["SendTimeout"].Value),
OpenTimeout = TimeSpan.Parse(xe1.Attributes["OpenTimeout"].Value),
ReceiveTimeout = TimeSpan.Parse(xe1.Attributes["ReceiveTimeout"].Value),
TransferMode = (TransferMode)Enum.Parse(typeof(TransferMode), xe1.Attributes["TransferMode"].Value),
SecurityMode = (SecurityMode)Enum.Parse(typeof(SecurityMode), xe1.Attributes["SecurityMode"].Value),
Uri = xe1.Attributes["Address"].Value,
ReaderQuotasMaxDepth = Convert.ToInt32(xe1.Attributes["ReaderQuotasMaxDepth"].Value),
ReaderQuotasMaxStringContentLength = Convert.ToInt32(xe1.Attributes["ReaderQuotasMaxStringContentLength"].Value),
ReaderQuotasMaxArrayLength = Convert.ToInt32(xe1.Attributes["ReaderQuotasMaxArrayLength"].Value),
ReaderQuotasMaxBytesPerRead = Convert.ToInt32(xe1.Attributes["ReaderQuotasMaxBytesPerRead"].Value),
ReaderQuotasMaxNameTableCharCount = Convert.ToInt32(xe1.Attributes["ReaderQuotasMaxNameTableCharCount"].Value),
ReliableSessionOrdered = bool.Parse(xe1.Attributes["ReliableSessionOrdered"].Value),
ReliableSessionEnabled = bool.Parse(xe1.Attributes["ReliableSessionEnabled"].Value),
ReliableSessionInactivityTimeout = TimeSpan.Parse(xe1.Attributes["ReliableSessionInactivityTimeout"].Value),
//EnableBinaryFormatterBehavior = bool.Parse(xe1.Attributes["EnableBinaryFormatterBehavior"].Value),
IsUseWcfPool = bool.Parse(xe1.Attributes["IsUseWcfPool"].Value),
WcfMaxPoolSize = Convert.ToInt32(xe1.Attributes["WcfMaxPoolSize"].Value),
WcfOutTime = Convert.ToInt64(xe1.Attributes["WcfOutTime"].Value),
WcfFailureTime = Convert.ToInt64(xe1.Attributes["WcfFailureTime"].Value),
WcfPoolMonitorReapTime = Convert.ToInt32(xe1.Attributes["WcfPoolMonitorReapTime"].Value)
};
//获取负载均衡信息
XmlElement xe2 = XmlHelper.Child(xe, "LoadBalance");
LoadBalanceConfig config = new LoadBalanceConfig();
if (xe2 == null)
{
config.IsUsed = false;
}
else
{
config.IsUsed = bool.Parse(xe2.Attributes["IsUsed"].Value);
config.IsUseWcfPool = bool.Parse(xe2.Attributes["IsUseWcfPool"].Value);
config.WcfOutTime = long.Parse(xe2.Attributes["WcfOutTime"].Value);
config.WcfFailureTime = long.Parse(xe2.Attributes["WcfFailureTime"].Value);
config.WcfPoolMonitorReapTime = int.Parse(xe2.Attributes["WcfPoolMonitorReapTime"].Value);
IDictionary <string, Address> addresslist = new Dictionary <string, Address>();
foreach (XmlElement xe3 in XmlHelper.Children(xe2, "Address"))
{
Address address = new Address();
address.WcfMaxPoolSize = int.Parse(xe3.Attributes["WcfMaxPoolSize"].Value);
address.HeatBeatTime = TimeSpan.Parse(xe3.Attributes["HeatBeatTime"].Value);
address.Uri = xe3.InnerText.Trim();
addresslist.Add(address.Uri, address);
}
config.WcfAdress = addresslist;
config.BalanceAlgorithm = (BalanceAlgorithmBase)this.GetType().Assembly.CreateInstance(
"Eltc.Base.FrameWork.Helper.Wcf.LoadBalance."
+ xe2.Attributes["BalanceAlgorithm"].Value);
}
bing.LoadBalance = config;
mlist[name] = bing;
}
}
}
catch (Exception oe)
{
throw new ArgumentException(oe.Message);
}
}
/// <summary>
/// 客户端常量设置配值类
/// </summary>
/// <param name="doc"></param>
public WcfClentConstantSettingConfig(XmlDocument doc)
{
mlist = new Dictionary<string, WcfClentBinding>();
try
{
foreach (XmlElement elem in XmlHelper.Children(doc.DocumentElement, "Servers"))
{
foreach (XmlElement xe in XmlHelper.Children(elem, "Server"))
{
var name = xe.GetAttribute("name");
XmlElement xe1 = XmlHelper.Child(xe, "Binding");
Binding bindType = new NetTcpBinding();
WcfClentBinding bing = new WcfClentBinding()
{
BindingType = bindType,
MaxBufferPoolSize = Convert.ToInt32(xe1.Attributes["MaxBufferPoolSize"].Value),
MaxBufferSize = Convert.ToInt32(xe1.Attributes["MaxBufferSize"].Value),
MaxReceivedMessageSize = Convert.ToInt32(xe1.Attributes["MaxReceivedMessageSize"].Value),
MaxConnections = Convert.ToInt32(xe1.Attributes["MaxConnections"].Value),
ListenBacklog = Convert.ToInt32(xe1.Attributes["ListenBacklog"].Value),
SendTimeout = TimeSpan.Parse(xe1.Attributes["SendTimeout"].Value),
OpenTimeout = TimeSpan.Parse(xe1.Attributes["OpenTimeout"].Value),
ReceiveTimeout = TimeSpan.Parse(xe1.Attributes["ReceiveTimeout"].Value),
TransferMode = (TransferMode)Enum.Parse(typeof(TransferMode), xe1.Attributes["TransferMode"].Value),
SecurityMode = (SecurityMode)Enum.Parse(typeof(SecurityMode), xe1.Attributes["SecurityMode"].Value),
Uri = xe1.Attributes["Address"].Value,
ReaderQuotasMaxDepth = Convert.ToInt32(xe1.Attributes["ReaderQuotasMaxDepth"].Value),
ReaderQuotasMaxStringContentLength = Convert.ToInt32(xe1.Attributes["ReaderQuotasMaxStringContentLength"].Value),
ReaderQuotasMaxArrayLength = Convert.ToInt32(xe1.Attributes["ReaderQuotasMaxArrayLength"].Value),
ReaderQuotasMaxBytesPerRead = Convert.ToInt32(xe1.Attributes["ReaderQuotasMaxBytesPerRead"].Value),
ReaderQuotasMaxNameTableCharCount = Convert.ToInt32(xe1.Attributes["ReaderQuotasMaxNameTableCharCount"].Value),
ReliableSessionOrdered = bool.Parse(xe1.Attributes["ReliableSessionOrdered"].Value),
ReliableSessionEnabled = bool.Parse(xe1.Attributes["ReliableSessionEnabled"].Value),
ReliableSessionInactivityTimeout = TimeSpan.Parse(xe1.Attributes["ReliableSessionInactivityTimeout"].Value),
//EnableBinaryFormatterBehavior = bool.Parse(xe1.Attributes["EnableBinaryFormatterBehavior"].Value),
IsUseWcfPool = bool.Parse(xe1.Attributes["IsUseWcfPool"].Value),
WcfMaxPoolSize = Convert.ToInt32(xe1.Attributes["WcfMaxPoolSize"].Value),
WcfOutTime = Convert.ToInt64(xe1.Attributes["WcfOutTime"].Value),
WcfFailureTime = Convert.ToInt64(xe1.Attributes["WcfFailureTime"].Value),
WcfPoolMonitorReapTime = Convert.ToInt32(xe1.Attributes["WcfPoolMonitorReapTime"].Value)
};
//获取负载均衡信息
XmlElement xe2 = XmlHelper.Child(xe, "LoadBalance");
LoadBalanceConfig config = new LoadBalanceConfig();
if (xe2 == null) { config.IsUsed = false; }
else
{
config.IsUsed = bool.Parse(xe2.Attributes["IsUsed"].Value);
config.IsUseWcfPool = bool.Parse(xe2.Attributes["IsUseWcfPool"].Value);
config.WcfOutTime = long.Parse(xe2.Attributes["WcfOutTime"].Value);
config.WcfFailureTime = long.Parse(xe2.Attributes["WcfFailureTime"].Value);
config.WcfPoolMonitorReapTime = int.Parse(xe2.Attributes["WcfPoolMonitorReapTime"].Value);
IDictionary<string, Address> addresslist = new Dictionary<string, Address>();
foreach (XmlElement xe3 in XmlHelper.Children(xe2, "Address"))
{
Address address = new Address();
address.WcfMaxPoolSize = int.Parse(xe3.Attributes["WcfMaxPoolSize"].Value);
address.HeatBeatTime = TimeSpan.Parse(xe3.Attributes["HeatBeatTime"].Value);
address.Uri = xe3.InnerText.Trim();
addresslist.Add(address.Uri, address);
}
config.WcfAdress = addresslist;
config.BalanceAlgorithm = (BalanceAlgorithmBase)this.GetType().Assembly.CreateInstance(
"Eltc.Base.FrameWork.Helper.Wcf.LoadBalance."
+ xe2.Attributes["BalanceAlgorithm"].Value);
}
bing.LoadBalance = config;
mlist[name] = bing;
}
}
}
catch (Exception oe)
{
throw new ArgumentException(oe.Message);
}
}
/// <summary>
/// 拦截器处理
/// </summary>
/// <param name="msg"></param>
/// <returns></returns>
public override IMessage Invoke(IMessage msg)
{
IMethodReturnMessage methodReturn = null;
IMethodCallMessage methodCall = (IMethodCallMessage)msg;
string contract = typeof(T).FullName;
string server_name = WcfCacheData.GetServerName(contract);
WcfClentBinding clientconst = WcfCacheData.GetWcfClientConst(server_name);
//web.config或app.config中的ApplicationName
string wcfappname = ConfigurationManager.AppSettings["ApplicationName"];
bool EnableBinaryFormatterBehavior = clientconst.EnableBinaryFormatterBehavior;
LoadBalanceConfig balance = clientconst.LoadBalance;
//获取负载均衡设置中是否启用连接池
bool isUseWcfPool = balance.IsUseWcfPool;
//获取负载的服务器uri
string uri = null;
try
{
uri = balance.BalanceAlgorithm.GetServerKey();
}
catch (Exception buex)
{
throw buex;
}
Address uri_address = balance.WcfAdress[uri];
WcfPool pool = null;
//获取的池子索引
int?index = null;
T channel = default(T);
OperationContextScope scope = null;
if (!isUseWcfPool)//不启用连接池
{
ChannelFactory <T> factory = WcfCacheData.GetFactory <T>(uri_address, EnableBinaryFormatterBehavior);
channel = factory.CreateChannel();
//scope = new OperationContextScope(((IClientChannel)channel));
}
else
{
string server_key = server_name + "/" + uri;
//初始化连接池
WcfPoolCache.Init(isUseWcfPool, uri_address.WcfMaxPoolSize, balance.WcfOutTime, balance.WcfFailureTime, server_key, balance.WcfPoolMonitorReapTime);
//此处使用wcf连接池技术，获取当前wcf连接池
pool = WcfPoolCache.GetWcfPool(server_key);
#region 统模式
//是否超时
bool isouttime = false;
//超时计时器
Stopwatch sw = new Stopwatch();
sw.Start();
while (true)
{
#region while
if (string.IsNullOrEmpty(uri))
{
throw new Exception("所有的负载服务器都挂掉了");
}
bool isReap = true;
//先判断池子中是否有此空闲连接
if (pool.GetFreePoolNums(contract) > 0)
{
isReap = false;
try
{
WcfCommunicationObj commobj = pool.GetChannel <T>();
if (commobj != null && commobj.CommucationObject.State == CommunicationState.Opened)
{
index = commobj.Index;
channel = (T)commobj.CommucationObject;
}
}
catch (Exception ex)
{
throw new Exception(ex.ToString());
}
}
//如果没有空闲连接判断是否池子是否已满，未满，则创建新连接并装入连接池
if (channel == null && !pool.IsPoolFull)
{
//创建新连接
ChannelFactory <T> factory = WcfCacheData.GetFactory <T>(uri_address, EnableBinaryFormatterBehavior);
//装入连接池
try
{
bool flag = pool.AddPool <T>(factory, out channel, out index, isReap);
}
catch (Exception ex)
{
#region 重新获取服务器
balance.BalanceAlgorithm.Kill(uri);
try
{
uri = balance.BalanceAlgorithm.GetServerKey();
}
catch (Exception buex)
{
throw buex;
}
uri_address = balance.WcfAdress[uri];
server_key = server_name + "/" + uri;
//初始化连接池
WcfPoolCache.Init(isUseWcfPool, uri_address.WcfMaxPoolSize, balance.WcfOutTime, balance.WcfFailureTime, server_key, balance.WcfPoolMonitorReapTime);
//此处使用wcf连接池技术，获取当前wcf连接池
pool = WcfPoolCache.GetWcfPool(server_key);
continue;
#endregion
}
}
//如果当前契约无空闲连接，并且队列已满，并且非当前契约有空闲，则踢掉一个非当前契约
if (channel == null && pool.IsPoolFull && pool.GetFreePoolNums(contract) == 0 && pool.GetUsedPoolNums(contract) != uri_address.WcfMaxPoolSize)
{
//创建新连接
ChannelFactory <T> factory = WcfCacheData.GetFactory <T>(uri_address, EnableBinaryFormatterBehavior);
try
{
pool.RemovePoolOneNotAt <T>(factory, out channel, out index);
}
catch (Exception ex)
{
#region 重新获取服务器
balance.BalanceAlgorithm.Kill(uri);
try
{
uri = balance.BalanceAlgorithm.GetServerKey();
}
catch (Exception buex)
{
throw buex;
}
uri_address = balance.WcfAdress[uri];
server_key = server_name + "/" + uri;
//初始化连接池
WcfPoolCache.Init(isUseWcfPool, uri_address.WcfMaxPoolSize, balance.WcfOutTime, balance.WcfFailureTime, server_key, balance.WcfPoolMonitorReapTime);
//此处使用wcf连接池技术，获取当前wcf连接池
pool = WcfPoolCache.GetWcfPool(server_key);
continue;
#endregion
}
}
if (channel != null)
{
break;
}
//如果还未获取连接判断是否超时，如果超时抛异常
if (sw.Elapsed >= new TimeSpan(balance.WcfOutTime * 1000 * 10000))
{
break;
}
else
{
Thread.Sleep(100);
}
#endregion
}
sw.Stop();
sw = null;
if (isouttime)
{
throw new Exception("获取连接池中的连接超时，请配置WCF客户端常量配置文件中的WcfOutTime属性，Server name=\"" + server_name + "\"");
}
#endregion
#region 反应器
//AutoResetEvent autoEvents = new AutoResetEvent(false);
//BusinessException bex = null;
//ThreadPool.QueueUserWorkItem(delegate(object param)
//{
// //超时计时器
// Stopwatch sw = new Stopwatch();
// sw.Start();
// while (true)
// {
// #region while
// if (string.IsNullOrEmpty(uri))
// {
// bex = new BusinessException("所有的负载服务器都挂掉了");
// autoEvents.Set();
// break;
// }
// bool isReap = true;
// //先判断池子中是否有此空闲连接
// if (pool.GetFreePoolNums(contract) > 0)
// {
// isReap = false;
// try
// {
// WcfCommunicationObj commobj = pool.GetChannel<T>();
// if (commobj != null && commobj.CommucationObject.State == CommunicationState.Opened)
// {
// index = commobj.Index;
// channel = (T)commobj.CommucationObject;
// }
// }
// catch (Exception ex)
// {
// bex = new BusinessException(ex.ToString());
// autoEvents.Set();
// break;
// }
// }
// //如果没有空闲连接判断是否池子是否已满，未满，则创建新连接并装入连接池
// if (channel == null && !pool.IsPoolFull)
// {
// //创建新连接
// ChannelFactory<T> factory = WcfCacheData.GetFactory<T>(uri_address, EnableBinaryFormatterBehavior);
// //装入连接池
// try
// {
// bool flag = pool.AddPool<T>(factory, out channel, out index, isReap);
// }
// catch (Exception ex)
// {
// #region 重新获取服务器
// balance.BalanceAlgorithm.Kill(uri);
// try
// {
// uri = balance.BalanceAlgorithm.GetServerKey();
// }
// catch (BusinessException buex)
// {
// bex = buex;
// autoEvents.Set();
// break;
// }
// uri_address = balance.WcfAdress[uri];
// server_key = server_name + "/" + uri;
// //初始化连接池
// WcfPoolCache.Init(isUseWcfPool, uri_address.WcfMaxPoolSize, balance.WcfOutTime, balance.WcfFailureTime, server_key, balance.WcfPoolMonitorReapTime);
// //此处使用wcf连接池技术，获取当前wcf连接池
// pool = WcfPoolCache.GetWcfPool(server_key);
// continue;
// #endregion
// }
// }
// //如果当前契约无空闲连接，并且队列已满，并且非当前契约有空闲，则踢掉一个非当前契约
// if (channel == null && pool.IsPoolFull && pool.GetFreePoolNums(contract) == 0 && pool.GetUsedPoolNums(contract) != uri_address.WcfMaxPoolSize)
// {
// //创建新连接
// ChannelFactory<T> factory = WcfCacheData.GetFactory<T>(uri_address, EnableBinaryFormatterBehavior);
// try
// {
// pool.RemovePoolOneNotAt<T>(factory, out channel, out index);
// }
// catch (Exception ex)
// {
// #region 重新获取服务器
// balance.BalanceAlgorithm.Kill(uri);
// try
// {
// uri = balance.BalanceAlgorithm.GetServerKey();
// }
// catch (BusinessException buex)
// {
// bex = buex;
// autoEvents.Set();
// break;
// }
// uri_address = balance.WcfAdress[uri];
// server_key = server_name + "/" + uri;
// //初始化连接池
// WcfPoolCache.Init(isUseWcfPool, uri_address.WcfMaxPoolSize, balance.WcfOutTime, balance.WcfFailureTime, server_key, balance.WcfPoolMonitorReapTime);
// //此处使用wcf连接池技术，获取当前wcf连接池
// pool = WcfPoolCache.GetWcfPool(server_key);
// continue;
// #endregion
// }
// }
// if (channel != null)
// {
// autoEvents.Set();
// break;
// }
// //如果还未获取连接判断是否超时，如果超时抛异常
// if (sw.Elapsed >= new TimeSpan(balance.WcfOutTime * 1000 * 10000))
// {
// break;
// }
// else
// {
// Thread.Sleep(100);
// }
// #endregion
// }
// sw.Stop();
// sw = null;
// Thread.CurrentThread.Abort();
//});
//if (!autoEvents.WaitOne(new TimeSpan(balance.WcfOutTime * 1000 * 10000)))
//{
// throw new NormalException("获取连接池中的连接超时，请配置WCF客户端常量配置文件中的WcfOutTime属性，Server name=\"" + server_name + "\" Uri:" + uri);
//}
//if (bex != null)
//{
// throw bex;
//}
#endregion
}
#region 递上下文
if (wcfappname != null)
{
HeaderOperater.SetClientWcfAppNameHeader(wcfappname);
}
#endregion
try
{
object[] copiedArgs = Array.CreateInstance(typeof(object), methodCall.Args.Length) as object[];
methodCall.Args.CopyTo(copiedArgs, 0);
object returnValue = methodCall.MethodBase.Invoke(channel, copiedArgs);
methodReturn = new ReturnMessage(returnValue,
copiedArgs,
copiedArgs.Length,
methodCall.LogicalCallContext,
methodCall);
//如果启用连接池，使用完后把连接回归连接池
if (isUseWcfPool)
{
if (index != null && pool != null)
{
pool.ReturnPool <T>((int)index);
}
}
}
catch (Exception ex)
{
var exception = ex;
if (ex.InnerException != null)
{
exception = ex.InnerException;
}
methodReturn = new ReturnMessage(exception, methodCall);
//如果启用连接池，出错则关闭连接，并删除连接池中的连接
if (isUseWcfPool)
{
if (index != null && pool != null)
{
pool.RemovePoolAt <T>((int)index);
}
}
}
finally
{
if (!isUseWcfPool)//不启用连接池
{
if (scope != null)
{
scope.Dispose();
}
(channel as IDisposable).Dispose();
}
//清除wcf应用程序名上下文
if (wcfappname != null)
{
HeaderOperater.ClearClientWcfAppNameHeader();
}
}
return(methodReturn);
}