void context_BeginRequest(object sender, EventArgs e)
{
HttpApplication app = (HttpApplication)sender;
HttpContext context = app.Context;
Uri uri = context.Request.Url;
#region 微服务检测与启动
string urlAbs = uri.AbsoluteUri;
string urlPath = uri.PathAndQuery;
string host = urlAbs.Substring(0, urlAbs.Length - urlPath.Length);
MicroService.Run.Start(host);//微服务检测、启动。
if (!QueryTool.IsCallMicroServiceReg(uri) && MicroService.Run.Proxy(context, true))
{
QueryTool.SetRunProxySuccess(context);
try
{
context.Response.End();
}
catch (ThreadAbortException)
{
}
return;
}
#endregion
if (QueryTool.IsCallMvc(uri))
{
if (context.Request.Url.LocalPath == "/")//设置默认首页
{
string defaultUrl = QueryTool.GetDefaultUrl();
if (!string.IsNullOrEmpty(defaultUrl))
{
context.RewritePath(defaultUrl);
return;
}
}
if (QueryTool.IsTaurusSuffix(uri))
{
MethodInfo routeMapInvoke = MethodCollector.RouteMapInvokeMethod;
if (routeMapInvoke != null)
{
string url = Convert.ToString(routeMapInvoke.Invoke(null, new object[] { context.Request }));
if (!string.IsNullOrEmpty(url))
{
context.RewritePath(url);
}
}
}
}
}
void context_BeginRequest(object sender, EventArgs e)
{
HttpApplication app = (HttpApplication)sender;
context = app.Context;
if (context.Request.Url.LocalPath == "/")//设置默认首页
{
string defaultUrl = QueryTool.GetDefaultUrl();
if (!string.IsNullOrEmpty(defaultUrl))
{
context.RewritePath(defaultUrl, false);
}
}
}
/// <summary>
/// 网关代理转发方法
/// </summary>
internal static bool Proxy(HttpContext context, bool isServerCall)
{
if ((isServerCall && !Server.IsServer) || (!isServerCall && !Client.IsClient))
{
return(false);
}
List <HostInfo> infoList = new List <HostInfo>();
string module = string.Empty;
IPAddress iPAddress;
List <HostInfo> domainList = null;
if (context.Request.Url.Host != "localhost" && !IPAddress.TryParse(context.Request.Url.Host, out iPAddress))
{
module = context.Request.Url.Host;//域名转发优先。
domainList = isServerCall ? MicroService.Server.GetHostList(module) : MicroService.Client.GetHostList(module);
if (domainList == null || domainList.Count == 0)
{
return(false);
}
}
if (context.Request.Url.LocalPath == "/")
{
module = QueryTool.GetDefaultUrl().TrimStart('/').Split('/')[0];
}
else
{
module = context.Request.Url.LocalPath.TrimStart('/').Split('/')[0];
}
List <HostInfo> moduleList = isServerCall ? MicroService.Server.GetHostList(module) : MicroService.Client.GetHostList(module);
if (domainList == null || domainList.Count == 0)
{
infoList = moduleList;
}
else if (moduleList == null || moduleList.Count == 0)
{
infoList = domainList;
}
else
{
foreach (var item in domainList)//过滤掉不在域名下的主机
{
foreach (var keyValue in moduleList)
{
if (item.Host == keyValue.Host)
{
infoList.Add(item);
break;
}
}
}
}
if (infoList == null || infoList.Count == 0)
{
return(false);
}
else
{
int max = 3;//最多循环3个节点，避免长时间循环卡机。
bool isRegCenter = Server.IsRegCenterOfMaster;
HostInfo firstInfo = infoList[0];
if (firstInfo.CallIndex >= infoList.Count)
{
firstInfo.CallIndex = 0;//处理节点移除后，CallIndex最大值的问题。
}
for (int i = 0; i < infoList.Count; i++)
{
int callIndex = firstInfo.CallIndex + i;
if (callIndex >= infoList.Count)
{
callIndex = callIndex - infoList.Count;
}
HostInfo info = infoList[callIndex];
if (info.Version < 0 || (info.CallTime > DateTime.Now && infoList.Count > 0) || (isRegCenter && info.RegTime < DateTime.Now.AddSeconds(-10))) //正常5-10秒注册1次。
{
continue; //已经断开服务的。
}
if (Proxy(context, info.Host, isServerCall))
{
firstInfo.CallIndex = callIndex + 1;//指向下一个。
return(true);
}
else
{
info.CallTime = DateTime.Now.AddSeconds(10);//网络异常的，延时10s检测。
max--;
if (max == 0)
{
return(false);
}
}
}
return(false);
}
}
