/// <summary>
/// 重写基类OnCreate方法来创建本地配置实例
/// </summary>
/// <param name="sectionName">节点名称</param>
/// <param name="type">The type.</param>
/// <param name="major">主版本号</param>
/// <param name="minor">次版本号</param>
/// <returns></returns>
protected override object OnCreate(string sectionName, Type type, out int major, out int minor)
{
major = XmlSerializerSectionHandler.GetConfigurationClassMajorVersion(type);
minor = XmlSerializerSectionHandler.DefaultUninitMinorVersion;
string configPath = GetConfigSectionFileName(sectionName);
if (configPath.Length == 0)
{
return(null);
}
object retVal;
try
{
XmlDocument doc = new XmlDocument();
doc.Load(configPath);
//初始化配置实例
retVal = XmlSerializerSectionHandler.GetConfigInstance(doc.DocumentElement, type, out major, out minor);
// XmlSerializerSectionHandler.GetConfigVersion( doc.DocumentElement , out major , out minor );
}
catch (Exception ex)
{
HandleException(ex, "创建本地配置时出错: sectionName=" + sectionName + ",type=" + type.Name + ", 会创建空实例替代", sectionName);
//出现异常通过反射初始化为空配置实例
retVal = Activator.CreateInstance(type);
}
//为配置文件添加FileWatcher
ConfigWatcher.SetupWatcher(configPath, retVal);
return(retVal);
}
/// <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);
}
private object CreateLocalObject(Type type, string path, out int major, out int minor)
{
try
{
if (File.Exists(path))
{
XmlDocument doc = new XmlDocument();
doc.Load(path);
object obj = ConfigWatcher.CreateAndSetupWatcher(doc.DocumentElement,
path, type, OnConfigFileChanged);
XmlSerializerSectionHandler.GetConfigVersion(doc.DocumentElement, out major, out minor);
return(obj);
}
}
catch (Exception ex)
{
HandleException(ex, "RemoteConfigurationManager.CreateLocalObject,type=" + type.Name + ",path=" + path, type.Name);
}
major = XmlSerializerSectionHandler.GetConfigurationClassMajorVersion(type);
minor = XmlSerializerSectionHandler.DefaultUninitMinorVersion;
return(null);
}