public bool ChoiceLoad(ServiceManager.Agent.SubscribeState providers, out long provider)
{
provider = 0;
var list = providers.ServiceInfos.ServiceInfoListSortedByIdentity;
var frees = new List <ProviderSession>(list.Count);
var all = new List <ProviderSession>(list.Count);
int TotalWeight = 0;
// 新的provider在后面，从后面开始搜索。后面的可能是新的provider。
for (int i = list.Count - 1; i >= 0; --i)
{
var providerModuleState = list[i].LocalState as ProviderModuleState;
if (null == providerModuleState)
{
continue;
}
var ps = App.Instance.ProviderService.GetSocket(providerModuleState.SessionId)?.UserState as ProviderSession;
if (null == ps)
{
continue; // 这里发现关闭的服务，仅仅忽略.
}
all.Add(ps);
if (ps.OnlineNew > App.Instance.Config.MaxOnlineNew)
{
continue;
}
int weight = ps.ProposeMaxOnline - ps.Online;
if (weight <= 0)
{
continue;
}
frees.Add(ps);
TotalWeight += weight;
}
if (TotalWeight > 0)
{
int randweight = Zeze.Util.Random.Instance.Next(TotalWeight);
foreach (var ps in frees)
{
int weight = ps.ProposeMaxOnline - ps.Online;
if (randweight < weight)
{
provider = ps.SessionId;
return(true);
}
randweight -= weight;
}
}
// 选择失败，一般是都满载了，随机选择一个。
if (all.Count > 0)
{
provider = all[Zeze.Util.Random.Instance.Next(all.Count)].SessionId;
return(true);
}
// no providers
return(false);
}
public bool ChoiceHash(ServiceManager.Agent.SubscribeState providers,
int hash, out long provider)
{
provider = 0;
var list = providers.ServiceInfos.ServiceInfoListSortedByIdentity;
if (list.Count == 0)
{
return(false);
}
var providerModuleState = list[hash % list.Count].LocalState as ProviderModuleState;
if (null == providerModuleState)
{
return(false);
}
provider = providerModuleState.SessionId;
return(true);
}
