/// <summary>
/// 执行调度
/// </summary>
/// <returns></returns>
public ServiceRegModel DoDispatch()
{
regservic.CurrentContext = this.CurrentContext;
//从注册的服务列表里面，根据服务中的长连接数量决定选取那个服务
ServiceRegModel returnValue = null;
ICacheProvider cache = CacheProviderFactory.GetGlobalCacheProvider();
var list = regservic.GetActiveServerList();//已经确保GetActiveServerList 不为空
//if (list != null)
//{
// var regModel = list.Select(o => new { Count = cache.Get<int>(o.GetUri() + "_ListenerCount"), RegModel = o })
// .OrderBy(o => o.Count).FirstOrDefault();
// if (regModel != null)
// returnValue = regModel.RegModel;
//}
int minCount = int.MaxValue;
foreach (ServiceRegModel item in list)
{
ServiceHostInfo host = item as ServiceHostInfo;
if (host != null && minCount > host.ListenerCount)
{
minCount = host.ListenerCount;
returnValue = item;
}
}
if (returnValue == null)
{
returnValue = this.CurrentContext.Host;
}
return(returnValue);
}
/// <summary>
/// 监听器统计，如果服务挂机，则统计信息在1分钟后过期
/// </summary>
private static void ListenersCountTimer()
{
CountTimer = new System.Threading.Timer(new System.Threading.TimerCallback(o =>
{
DateTime dt = DateTime.Now;
int[] arrCount = MessageCenter.Instance.CheckListeners();
int currCount = arrCount[0];
//将监听器数量写入全局缓存，供集群调度服务使用
ICacheProvider cache = CacheProviderFactory.GetGlobalCacheProvider();
string key = Program.Host.GetUri() + "_HostInfo";
ServiceHostInfo serviceHostInfo = cache.Get <ServiceHostInfo>(key, () =>
{
ServiceHostInfo info = new ServiceHostInfo();
info.RegServerDesc = Program.Host.RegServerDesc;
info.RegServerIP = Program.Host.RegServerIP;
info.RegServerPort = Program.Host.RegServerPort;
info.IsActive = Program.Host.IsActive;
info.ServerMappingIP = Program.Host.ServerMappingIP;
info.LogDirectory = Program.Host.LogDirectory;
info.ListenerCount = currCount;
info.ListenerMaxCount = currCount;
info.ListenerMaxDateTime = DateTime.Now;
info.ActiveConnectCount = arrCount[1];
return(info);
},
new System.Runtime.Caching.CacheItemPolicy()
{
SlidingExpiration = new TimeSpan(0, 10, 0)
}
);
bool changed = false;
int maxCount = serviceHostInfo.ListenerMaxCount;
if (currCount > maxCount)
{
changed = true;
maxCount = currCount;
serviceHostInfo.ListenerCount = currCount;
serviceHostInfo.ListenerMaxCount = maxCount;
serviceHostInfo.ListenerMaxDateTime = DateTime.Now;
}
else if (currCount != serviceHostInfo.ListenerCount)
{
changed = true;
serviceHostInfo.ListenerCount = currCount;
}
if (changed)
{
serviceHostInfo.ActiveConnectCount = arrCount[1];
Host.ListenerCount = serviceHostInfo.ListenerCount;
Host.ListenerMaxCount = serviceHostInfo.ListenerMaxCount;
Host.ListenerMaxDateTime = serviceHostInfo.ListenerMaxDateTime;
Host.ActiveConnectCount = serviceHostInfo.ActiveConnectCount;
cache.Insert <ServiceHostInfo>(
key,
serviceHostInfo,
new System.Runtime.Caching.CacheItemPolicy()
{
SlidingExpiration = new TimeSpan(0, 1, 0)
}
);
}
Console.WriteLine("=========监听器数量统计：当前{0}个,最大{1}个,用时{2} ms ============", currCount, maxCount, DateTime.Now.Subtract(dt).TotalMilliseconds);
}), null, 1000, 10000);
}
