private static string GetRemoteConfigFile()
{
string remoteFile = System.Web.Configuration.WebConfigurationManager.AppSettings[RemoteConfigFileAppSettingKey];
if (remoteFile == null)
{
remoteFile = LocalConfigurationManager.MapConfigPath(RemoteConfigurationManagerConfigFileName);
}
else
{
remoteFile = LocalConfigurationManager.MapConfigPath(remoteFile);
}
if (!File.Exists(remoteFile))
{
LoggerWrapper.Logger.Info("配置文件" + remoteFile + "' 不存在, 将会在 '" + ConfigUtility.DefaultApplicationConfigFolder + "'创建新的默认配置文件");
remoteFile = ConfigUtility.Combine(ConfigUtility.DefaultApplicationConfigFolder, RemoteConfigurationManagerConfigFileName);
// 如果 "RemoteConfigurationManager.config" 不存在时必须在此创建默认配置
if (!File.Exists(remoteFile))
{
Directory.CreateDirectory(ConfigUtility.DefaultApplicationConfigFolder);
using (XmlTextWriter writer = new XmlTextWriter(remoteFile, Encoding.UTF8))
{
writer.WriteStartElement(RemoteConfigurationManagerConfiguration.TagName);
RemoteConfigurationManagerConfiguration.DefaultConfig.WriteXml(writer);
writer.WriteEndElement();
}
}
}
return(remoteFile);
}
/// <summary>
/// 重写基类OnCreate方法来创建远程配置实例（原理其实还是把远程配置下载到本地创建本地配置实例）
/// </summary>
/// <param name="sectionName">Name of the section.</param>
/// <param name="type">The type.</param>
/// <param name="major">The major.</param>
/// <param name="minor">The minor.</param>
/// <returns></returns>
protected override object OnCreate(string sectionName, Type type, out int major, out int minor)
{
string fileName = GetFileName(sectionName);
//string path = GetPath( sectionName );
string path = ConfigUtility.Combine(config.LocalApplicationFolder, fileName);
object obj = CreateLocalObject(type, path, out major, out minor);
if (obj != null)
{
return(obj);
}
major = XmlSerializerSectionHandler.GetConfigurationClassMajorVersion(type);
minor = XmlSerializerSectionHandler.DefaultUninitMinorVersion;
try
{
RemoteConfigSectionParam newParams = GetServerVersion(sectionName, major);
if (newParams != null)
{
//从远程下载！
if (Download(newParams.SectionName, newParams.DownloadUrl, path, CheckDownloadStream))
{
obj = CreateLocalObject(type, path, out major, out minor);//下载远程配置到本地后创建配置实例
}
}
}
catch (Exception ex)
{
HandleException(ex, "从远程服务器下载配置 '" + sectionName + "' 时出错", sectionName);
}
//如果对象为null通过反射默认对象替代
if (obj == null)
{
LoggerWrapper.Logger.Info("无法从 RemoteConfiguration 取得拥有类型'" + type.Name + "' 的'" + sectionName + "' 节点，通将过反射创建空实例替代");
obj = Activator.CreateInstance(type);
//为配置添加文件更改监控
ConfigWatcher.SetupWatcher(path, obj);
ConfigWatcher.RegisterReloadNotification(path, OnConfigFileChanged);
}
return(obj);
}
public static string Combine(string folder, string file)
{
return(ConfigUtility.Combine(folder, file));
}
private string GetPath(string sectionName)
{
return(ConfigUtility.Combine(config.LocalApplicationFolder, GetFileName(sectionName)));
}