/// <summary>
/// 重启ASP.NET应用域，包括Web站点和BundleRuntime，并填写向用户展示的HTML页面。
/// </summary>
/// <param name="writeHtmlContent">向用户展示的HTML页面信息的delegate。</param>
/// <example>
/// <para>以下代码是在一个页面中重启了ASP.NET应用域。</para>
///
/// <code>
/// <![CDATA[
/// using System;
/// using System.Collections.Generic;
/// using System.Web;
/// using System.Web.UI;
/// using System.Web.UI.WebControls;
/// using UIShell.OSGi.Core.Service;
/// using UIShell.OSGi.WebExtension;
/// using System.Xml;
/// using System.Reflection;
///
/// namespace UIShell.OSGi.WebShell
/// {
/// public partial class _Default : System.Web.UI.Page
/// {
/// protected void RestartAppDomain_Clicked(object sender, EventArgs e)
/// {
/// IBundleRuntimeHttpHost bundleRuntimeHttpHost = (IBundleRuntimeHttpHost)Context.ApplicationInstance;
/// bundleRuntimeHttpHost.RestartAppDomain(WriteMessageOnly);
/// }
/// }
/// }
///
/// private void WriteMessageOnly(StreamWriter sw)
/// {
/// sw.Write("<HTML><HEAD> <meta http-equiv=\"content-type\" content=\"text/html;charset=utf-8\"> <TITLE>关闭浏览器</TITLE> </HEAD>");
/// sw.Write("<style>body{TEXT-ALIGN:center;} .center{MARGIN-RIGHT:auto;MARGIN-LEFT:auto;margin-top:200px;height:200px;width:400px;vertical-align:middle;line-height:40px;}</style>");
/// sw.Write(string.Format("<BODY><div class=\"center\"><p>操作已成功，请关闭浏览器重新访问。</p><p></p></div></BODY></HTML>"));
/// }
/// ]]>
/// </code>
/// </example>
public static void RestartAppDomain(WriteHtmlContentAfterReboot writeHtmlContent)
{
FileLogUtility.Debug("Restarting the website by write bin forder or web config.");
if (!TryWriteBinFolder() && !TryWriteWebConfig())
{
throw new BundleException(
string.Format(
"UIShell.OSGi needs to be restarted due to bundle uninstalling or updating, but was unable to do so.\r\nTo prevent this issue in the future, a change to the web server configuration is required:\r\n- run the application in a full trust environment, or\r\n- give the application write access to the '{0}' folder, or\r\n- give the application write access to the '{1}' file.",
HostRestartPhysicalPath,
WebConfigPhysicalPath));
}
HttpContext current = HttpContext.Current;
if (current != null)
{
if (current.Request.RequestType == "GET")
{
current.Response.Redirect(current.Request.Url.ToString(), true);
}
else
{
string refreshHtmlPhysicalPath = RefreshHtmlPhysicalPath;
try
{
if (File.Exists(refreshHtmlPhysicalPath))
{
File.Delete(refreshHtmlPhysicalPath);
}
using (StreamWriter streamWriter = File.CreateText(refreshHtmlPhysicalPath))
{
if (writeHtmlContent != null)
{
writeHtmlContent(streamWriter);
}
}
}
catch
{
throw new BundleException(
string.Format(
"UIShell.OSGi needs to be restarted due to bundle uninstalling or updating, but was unable to do so.\r\nTo prevent this issue in the future, a change to the web server configuration is required:\r\n- give the application create/write access to the '{0}' file.",
refreshHtmlPhysicalPath));
}
current.Response.WriteFile(RefreshHtmlPhysicalPath);
current.Response.End();
}
FileLogUtility.Debug("Restart website successfully.");
}
}
/// <summary>
/// 重启ASP.NET应用域，包括BundleRuntime。当卸载一个模块或者更新一个模块时，需要重新启动应用域，因为旧的程序集会一直保留在BundleRuntime所在应用域直到应用域重启。
/// </summary>
public virtual void RestartAppDomain(WriteHtmlContentAfterReboot writeHtmlContent)
{
FileLogUtility.Debug("Restarting the website by write bin forder or web config.");
bool success = TryWriteBinFolder() || TryWriteWebConfig();
if (!success)
{
throw new BundleException(
string.Format("UIShell.OSGi needs to be restarted due to bundle uninstalling or updating, but was unable to do so.\r\n" +
"To prevent this issue in the future, a change to the web server configuration is required:\r\n" +
"- run the application in a full trust environment, or\r\n" +
"- give the application write access to the '{0}' folder, or\r\n" +
"- give the application write access to the '{1}' file.",
_hostRestartPhysicalPath,
_webConfigPhysicalPath));
}
// If setting up extensions/modules requires an AppDomain restart, it's very unlikely the
// current request can be processed correctly. So, we redirect to the same URL, so that the
// new request will come to the newly started AppDomain.
HttpContext httpContext = HttpContext.Current;
if (httpContext != null)
{
// Don't redirect posts...
if (httpContext.Request.RequestType == "GET")
{
httpContext.Response.Redirect(httpContext.Request.Url.ToString(), true /*endResponse*/);
}
else
{
string refreshHtmlFullPath = _refreshHtmlPhysicalPath;
try
{
// AppStore will create a refresh.html with different content.
if (File.Exists(refreshHtmlFullPath))
{
File.Delete(refreshHtmlFullPath);
}
using (StreamWriter sw = File.CreateText(refreshHtmlFullPath))
{
if (writeHtmlContent != null)
{
writeHtmlContent(sw);
}
}
}
catch
{
throw new BundleException(
string.Format("UIShell.OSGi needs to be restarted due to bundle uninstalling or updating, but was unable to do so.\r\n" +
"To prevent this issue in the future, a change to the web server configuration is required:\r\n" +
"- give the application create/write access to the '{0}' file.",
refreshHtmlFullPath));
}
httpContext.Response.WriteFile(_refreshHtmlPhysicalPath);
httpContext.Response.End();
}
FileLogUtility.Debug("Restart website successfully.");
}
}
/// <summary>
/// 重启ASP.NET应用域，包括BundleRuntime。当卸载一个模块或者更新一个模块时，需要重新启动应用域，因为旧的程序集会一直保留在BundleRuntime所在应用域直到应用域重启。
/// </summary>
public virtual void RestartAppDomain(WriteHtmlContentAfterReboot writeHtmlContent)
{
BundleRuntimeHttpHostHelper.RestartAppDomain(writeHtmlContent);
}
