/// <summary>选择队列</summary>
/// <returns></returns>
public MessageQueue SelectQueue()
{
if (_robin == null)
{
var list = Brokers.Where(e => e.Permission.HasFlag(Permissions.Write) && e.WriteQueueNums > 0).ToList();
if (list.Count == 0)
{
return(null);
}
var total = list.Sum(e => e.WriteQueueNums);
if (total <= 0)
{
return(null);
}
_brokers = list;
_robin = new WeightRoundRobin(list.Select(e => e.WriteQueueNums).ToArray());
}
// 构造排序列表。希望能够均摊到各Broker
var idx = _robin.Get(out var times);
var bk = _brokers[idx];
return(new MessageQueue {
BrokerName = bk.Name, QueueId = (times - 1) % bk.WriteQueueNums
});
}
static void Test3()
{
var list = new List <BrokerInfo>
{
new BrokerInfo {
Name = "A", WriteQueueNums = 5
},
new BrokerInfo {
Name = "B", WriteQueueNums = 7, Addresses = new[] { "111", "222" }
},
new BrokerInfo {
Name = "C", WriteQueueNums = 9
},
};
var list2 = new List <BrokerInfo>
{
new BrokerInfo {
Name = "A", WriteQueueNums = 5
},
new BrokerInfo {
Name = "B", WriteQueueNums = 7, Addresses = new[] { "111", "222" }
},
new BrokerInfo {
Name = "C", WriteQueueNums = 9
},
};
Console.WriteLine(list[1].Equals(list2[1]));
Console.WriteLine(list2.SequenceEqual(list));
var robin = new WeightRoundRobin(list.Select(e => e.WriteQueueNums).ToArray());
var count = list.Sum(e => e.WriteQueueNums);
for (var i = 0; i < count; i++)
{
var idx = robin.Get(out var times);
var bk = list[idx];
Console.WriteLine("{0} {1} {2}", i, bk.Name, times - 1);
}
}
/// <summary>启动</summary>
/// <returns></returns>
public override Boolean Start()
{
if (!base.Start())
{
return(false);
}
if (LoadBalance == null)
{
LoadBalance = new WeightRoundRobin();
}
if (_NameServer != null)
{
_NameServer.OnBrokerChange += (s, e) =>
{
_brokers = null;
//_robin = null;
LoadBalance.Ready = false;
};
}
return(true);
}
static void Test3()
{
var dic = new SortedList <String, String>(StringComparer.Ordinal)
{
["subscription"] = "aaa",
["subVersion"] = "ccc",
};
Console.WriteLine(dic.Join(",", e => $"{e.Key}={e.Value}"));
Console.WriteLine('s' > 'V');
Console.WriteLine();
var cmp = Comparer <String> .Default;
Console.WriteLine(cmp.Compare("s", "S"));
Console.WriteLine(cmp.Compare("s", "v"));
Console.WriteLine(cmp.Compare("s", "V"));
Console.WriteLine();
var cmp2 = StringComparer.OrdinalIgnoreCase;
Console.WriteLine(cmp2.Compare("s", "S"));
Console.WriteLine(cmp2.Compare("s", "v"));
Console.WriteLine(cmp2.Compare("s", "V"));
Console.WriteLine();
cmp2 = StringComparer.Ordinal;
Console.WriteLine(cmp2.Compare("s", "S"));
Console.WriteLine(cmp2.Compare("s", "v"));
Console.WriteLine(cmp2.Compare("s", "V"));
//dic.Clear();
//dic = dic.OrderBy(e => e.Key).ToDictionary(e => e.Key, e => e.Value);
//Console.WriteLine(dic.Join(",", e => $"{e.Key}={e.Value}"));
var list = new List <BrokerInfo>
{
new BrokerInfo {
Name = "A", WriteQueueNums = 5
},
new BrokerInfo {
Name = "B", WriteQueueNums = 7, Addresses = new[] { "111", "222" }
},
new BrokerInfo {
Name = "C", WriteQueueNums = 9
},
};
var list2 = new List <BrokerInfo>
{
new BrokerInfo {
Name = "A", WriteQueueNums = 5
},
new BrokerInfo {
Name = "B", WriteQueueNums = 7, Addresses = new[] { "111", "222" }
},
new BrokerInfo {
Name = "C", WriteQueueNums = 9
},
};
Console.WriteLine(list[1].Equals(list2[1]));
Console.WriteLine(list2.SequenceEqual(list));
var robin = new WeightRoundRobin(list.Select(e => e.WriteQueueNums).ToArray());
var count = list.Sum(e => e.WriteQueueNums);
for (var i = 0; i < count; i++)
{
var idx = robin.Get(out var times);
var bk = list[idx];
Console.WriteLine("{0} {1} {2}", i, bk.Name, times - 1);
}
}
