void InitNodes()
{
nodes.Clear();
var document = new XPathDocument(file);
XPathNavigator navigator = document.CreateNavigator();
XPathNodeIterator it = navigator.Select("Rpc/Providers/Provider");
foreach (XPathNavigator navi in it) {
string nodeName = navi.GetAttribute("Name", "");
Boolean available = Boolean.Parse(navi.GetAttribute("Available", ""));
Int32 weight = Int32.Parse(navi.GetAttribute("Weight", ""));
string ip = navi.GetAttribute("Ip", "");
String url = navi.Value;
var node = new Node(nodeName, url, weight, available, ip);
nodes.Add(node);
}
}
public void RandomBalanceSelectTest()
{
var node1 = new Node("a","http://www.baidu.com?node=1&weight=5", 100, true,"192.168.1.10");
var node2 = new Node("a","http://www.baidu.com?node=2&weight=10", 500, true, "192.168.1.10");
var node3 = new Node("a", "http://www.baidu.com?node=3&weight=20", 1000, true, "192.168.1.10");
var list = new List<Node>();
list.Add(node1);
list.Add(node2);
list.Add(node3);
int node1Count = 0;
int node2Count = 0;
int node3Count = 0;
var randomBalance = new RandomLoadBalance();
for (var i = 0; i < 100000; i++) {
Node node = randomBalance.Select(list, string.Empty);
if (node == node3) {
node3Count++;
}
if (node == node2) {
node2Count++;
}
if (node == node1) {
node1Count++;
}
}
int totalCount = node1Count + node2Count + node3Count;
var result1 = (node1Count * 1.0 / totalCount);
var result2 = (100 * 1.0 / 1600);
Assert.IsTrue((result1 - result2) < 0.01, result1 + "," + result2);
}
public void RoundRobinLoadBalanceSelectTest()
{
var node1 = new Node("a","http://www.baidu.com?node=1&weight=100", 5, true,"192.168.1.1");
var node2 = new Node("a","http://www.baidu.com?node=2&weight=100", 10, true, "192.168.1.1");
var node3 = new Node("a","http://www.baidu.com?node=3&weight=200", 5, true, "192.168.1.1");
var node4 = new Node("a","http://www.baidu.com?node=4&weight=200", 30, true, "192.168.1.1");
var node5 = new Node("a","http://www.baidu.com?node=5&weight=200", 100, true, "192.168.1.1");
var list = new List<Node>();
list.Add(node1);
list.Add(node2);
list.Add(node3);
list.Add(node4);
list.Add(node5);
var roundRobinBalance = new RoundRobinLoadBalance();
ConcurrentDictionary<String,AtomicPositiveInteger> conDic = new ConcurrentDictionary<String,AtomicPositiveInteger>();
conDic.TryAdd(node1.Url, new AtomicPositiveInteger());
conDic.TryAdd(node2.Url, new AtomicPositiveInteger());
conDic.TryAdd(node3.Url, new AtomicPositiveInteger());
conDic.TryAdd(node4.Url, new AtomicPositiveInteger());
conDic.TryAdd(node5.Url, new AtomicPositiveInteger());
for (var i = 0; i < 100000; i++)
{
Node node = roundRobinBalance.Select(list, "test1");
conDic[node.Url].GetAndIncrement();
}
int totalCount = conDic[node1.Url].Value() + conDic[node2.Url].Value() + conDic[node3.Url].Value() + conDic[node4.Url].Value() + conDic[node4.Url].Value();
var result1 = (conDic[node4.Url].Value() * 1.0 / totalCount);
var result2 = (100 * 1.0 / 150);
Assert.IsTrue((result1 - result2) < 0.01, result1 + "," + result2);
}