/// <summary>
/// 获取可用的服务器地址
/// </summary>
/// <param name="host"></param>
/// <returns></returns>
public string GetUsableServerUrl(RemotingHost host)
{
if (AppDomain.CurrentDomain.GetData(host.Name) == null)
{
string url = host.Servers[host.DefaultServer].ServerUrl;
AppDomain.CurrentDomain.SetData(host.Name, url);
}
return AppDomain.CurrentDomain.GetData(host.Name).ToString();
}
void CheckRemotingHost(RemotingHost host)
{
string objectUrl = string.Empty;
RemotingServer defaultServer = host.Servers[host.DefaultServer];
string usableServerUrl = this.GetUsableServerUrl(host);
bool flag = false; //是否需要重设当前可用服务器标志
host.IsChecking = true;
//首先检查当前可用服务器
try
{
objectUrl = cfg.GetRemoteObjectUrl(usableServerUrl, "RemotingTest");
IRemotingTest t = (IRemotingTest)Activator.GetObject(typeof(RemotingTest), objectUrl);
t.GetDate();
WriteLog(host.Name, usableServerUrl, true, "ok");
}
catch (Exception ex)
{
flag = true; //需要重设当前可用服务器标志
WriteLog(host.Name, usableServerUrl, false, ex.Message);
}
//若当前可用服务器不是默认服务器，则再检查默认服务器，若其可用，则还原
if (defaultServer.ServerUrl != usableServerUrl)
{
try
{
objectUrl = cfg.GetRemoteObjectUrl(defaultServer.ServerUrl, "RemotingTest");
IRemotingTest t = (IRemotingTest)Activator.GetObject(typeof(RemotingTest), objectUrl);
t.GetDate();
AppDomain.CurrentDomain.SetData(host.Name, defaultServer.ServerUrl);
WriteLog(host.Name, defaultServer.ServerUrl, true, "ok");
}
catch (Exception ex)
{
WriteLog(host.Name, defaultServer.ServerUrl, false, ex.Message);
}
}
string serverUrl = string.Empty;
//遍历其他服务器，检查其状态
foreach (KeyValuePair<string, RemotingServer> kvp in host.Servers)
{
serverUrl = kvp.Value.ServerUrl;
if (serverUrl == usableServerUrl) continue;
if (serverUrl == defaultServer.ServerUrl) continue;
objectUrl = cfg.GetRemoteObjectUrl(serverUrl, "RemotingTest");
try
{
IRemotingTest t = (IRemotingTest)Activator.GetObject(typeof(RemotingTest), objectUrl);
t.GetDate();
if (flag)
{
AppDomain.CurrentDomain.SetData(host.Name, serverUrl); //重设当前可用服务器
flag = false;
WriteLog(host.Name, serverUrl, true, "ok");
}
WriteLog(host.Name, serverUrl, false, "ok");
}
catch (Exception ex)
{
WriteLog(host.Name, serverUrl, false, ex.Message);
}
}
host.IsChecking = false;
}
/// <summary>
/// 从配置文件加载配置值
/// </summary>
/// <param name="node"></param>
public void LoadValuesFromConfigurationXml(XmlNode node)
{
if (node == null)
{
return;
}
if (node.Attributes["isCheckServer"].Value != null)
{
this._IsCheckServer = node.Attributes["isCheckServer"].Value == "true" ? true : false;
}
if (node.Attributes["interval"].Value != null)
{
this._Interval = Convert.ToDouble(node.Attributes["interval"].Value);
}
foreach (XmlNode n in node.ChildNodes)
{
if (n.NodeType == XmlNodeType.Comment)
{
continue;
}
if (n.Name == "remotingHost")
{
XmlAttributeCollection ac = n.Attributes;
RemotingHost host = new RemotingHost();
host.Name = ac["name"].Value;
host.DefaultServer = ac["defaultServer"].Value;
Dictionary <string, string> modules = new Dictionary <string, string>();
Dictionary <string, RemotingServer> servers = new Dictionary <string, RemotingServer>();
foreach (XmlNode n1 in n.ChildNodes)
{
if (n1.NodeType == XmlNodeType.Comment)
{
continue;
}
XmlAttributeCollection ac1 = n1.Attributes;
if (n1.Name == "server")
{
RemotingServer server = new RemotingServer();
server.ServerName = ac1["name"].Value;
server.ServerUrl = ac1["url"].Value;
servers.Add(server.ServerName, server);
}
if (n1.Name == "remoteObject")
{
string name = ac1["name"].Value;
string objectUri = ac1["objectUri"].Value;
if (!modules.ContainsKey(name))
{
modules.Add(name, objectUri);
}
}
}//end foreach
host.Servers = servers;
host.Modules = modules;
if (!this._RemotingHosts.ContainsKey(host.Name))
{
this._RemotingHosts.Add(host.Name, host);
}
}
}
}
