internal static RelayNodeConfig GetRelayNodeConfig(XmlNode section)
{
RelayNodeConfig mainConfig;
if (string.IsNullOrWhiteSpace(section.InnerXml))
{
mainConfig = new RelayNodeConfig();
mainConfig.UseConfigurationServer = true;
mainConfig.SectionXml = section;
}
else
{
mainConfig = DeserializeMainConfig(section);
}
if (mainConfig.UseConfigurationServer) //override with remotely hosted section
{
mainConfig = GetMainConfigFromServer(mainConfig.ConfigurationServerSectionName);
}
WatchConfig(mainConfig);
FillSubConfigs(mainConfig);
return(mainConfig);
}
private static void ReloadDefaultConfig(object state, EventArgs args)
{
RelayNodeConfig newConfig = state as RelayNodeConfig;
if (newConfig != null)
{
DefaultConfiguration = newConfig;
}
}
private static RelayNodeConfig GetMainConfigFromServer(string sectionName)
{
XmlNode remoteSectionNode = ConfigurationClient.GetSectionXml(sectionName);
RelayNodeConfig remoteConfig = DeserializeMainConfig(remoteSectionNode);
//no matter what config server says we need to keep these two properties the same
remoteConfig.UseConfigurationServer = true;
remoteConfig.ConfigurationServerSectionName = sectionName;
return(remoteConfig);
}
private static RelayNodeConfig GetDefaultConfig()
{
if (DefaultConfiguration == null)
{
log.Info("No Data Relay configuration found. Getting default client configuration from configuration server.");
DefaultConfiguration = RelayNodeSectionHandler.GetRelayNodeConfig(GetDefaultConfigNode());
AddReloadEventHandler(ReloadDefaultConfig);
}
return(DefaultConfiguration);
}
public static RelayNodeConfig GetRelayNodeConfig(EventHandler reloadEventHandler)
{
AddReloadEventHandler(reloadEventHandler);
RelayNodeConfig config = ConfigurationManager.GetSection(RelayNodeSectionHandler.ConfigSectionName) as RelayNodeConfig;
if (config == null)
{
config = GetDefaultConfig();
}
return(config);
}
private static RelayNodeConfig DeserializeMainConfig(XmlNode section)
{
XmlSerializer ser = new XmlSerializer(typeof(RelayNodeConfig));
object configurationObject = ser.Deserialize(new XmlNodeReader(section));
if (!(configurationObject is RelayNodeConfig))
{
throw new ConfigurationErrorsException("Relay Node config with xml " + section.OuterXml + " could not be deserialzed");
}
RelayNodeConfig mainConfig = configurationObject as RelayNodeConfig;
mainConfig.SectionXml = section;
return(mainConfig);
}
private static void ReloadConfig(string name)
{
try
{
lock (ReloadEventHandlers)
{
SetConfigurationFile();
ConfigurationSection relayNodeConfigSection = ConfigurationFile.GetSection(ConfigSectionName);
XmlDocument configDoc = new XmlDocument();
XmlNode configNode;
if (relayNodeConfigSection != null)
{
string configSource = relayNodeConfigSection.SectionInformation.ConfigSource;
if (configSource == String.Empty)
{
configDoc.Load(ConfigurationFile.FilePath);
configNode = configDoc.SelectSingleNode("*/*[local-name()='RelayNodeConfig']");
}
else
{
configDoc.Load(GetFilePath(configSource));
configNode = configDoc.DocumentElement;
}
}
else
{
configNode = RelayNodeConfig.GetDefaultConfigNode();
}
RelayNodeConfig newConfig = GetRelayNodeConfig(configNode);
foreach (EventHandler handler in ReloadEventHandlers)
{
handler(newConfig, EventArgs.Empty);
}
}
}
catch (Exception e)
{ //since this happens on a background thread we really want to swallow it, because otherwise without legacy exception handling
//enabled it'll tank the app pool.
log.ErrorFormat("Exception processing config reload: {0}", e);
}
}
public object Create(object parent, object configContext, XmlNode section)
{
try
{
RelayNodeConfig config = GetRelayNodeConfig(section);
return(config);
}
catch (Exception ex)
{
if (log.IsErrorEnabled)
{
log.ErrorFormat("Exception getting relay node config: {0}", ex);
}
throw; // we want callers to know there was a problem
}
}
private static void FillSubConfigs(RelayNodeConfig mainConfig)
{
if (mainConfig.SectionXml == null)
{
throw new ConfigurationErrorsException("Section Xml on RelayNodeConfig was not available; can't fill sub configs!");
}
//TODO: implement defaults for subsections.
foreach (XmlNode node in mainConfig.SectionXml.ChildNodes)
{
switch (node.Name)
{
case "RelayComponents":
RelayComponents comps = GetSubConfig <RelayComponents>(node);
if (comps != null)
{
mainConfig.RelayComponents = comps.RelayComponentCollection;
}
else
{
if (log.IsErrorEnabled)
{
log.Error("No relay component config found.");
}
}
break;
case "TypeSettings":
mainConfig.TypeSettings = GetSubConfig <TypeSettings>(node);
break;
case "RelayNodeMapping":
mainConfig.RelayNodeMapping = GetSubConfig <RelayNodeMapping>(node);
break;
case "TransportSettings":
mainConfig.TransportSettings = GetSubConfig <TransportSettings>(node);
break;
}
}
}
public static RelayNodeConfig GetRelayNodeConfig(EventHandler reloadEventHandler)
{
RelayNodeConfig config = null;
try
{
AddReloadEventHandler(reloadEventHandler);
config = System.Configuration.ConfigurationManager.GetSection(RelayNodeSectionHandler.ConfigSectionName) as RelayNodeConfig;
}
catch (Exception ex)
{
if (log.IsErrorEnabled)
{
log.ErrorFormat("Exception loading Relay Node Config Section: {0}", ex);
}
throw; // we want callers to know something went wrong.
}
return(config);
}
private static void WatchConfig(RelayNodeConfig mainConfig)
{
//either way, watch the file that represents it, since it might switch between local and not
ConfigurationSection relayNodeConfigSection = ConfigurationFile.GetSection(ConfigSectionName);
string configSource = String.Empty;
if (relayNodeConfigSection != null)
{
configSource = relayNodeConfigSection.SectionInformation.ConfigSource;
}
string configPath = String.Empty;
if (!String.IsNullOrEmpty((configSource)))
{
//if there's no config source, then the info is embedded in the app config, and that's the file we need to watch
if (HttpContext.Current == null)
{
//but if there's an httpcontext, then we're in a web context, and you can't update an IIS config file without bouncing
//the appdomain, so there's no point in watching it.
configPath = Path.Combine(BasePath, configSource);
}
}
else
{
configPath = Path.GetFullPath(ConfigurationFile.FilePath);
}
if (!string.IsNullOrEmpty(configPath))
{
ConfigurationWatcher.WatchFile(configPath, ReloadConfig);
}
//if it came from config server, then register reload notification there
if (mainConfig.UseConfigurationServer)
{
ConfigurationWatcher.WatchRemoteSection(mainConfig.ConfigurationServerSectionName, ReloadConfig);
}
}
static void DelayProcessConfigChange(object ar)
{
lock (configLoadLock)
{
pendingConfigReloads.Clear();
try
{
System.Configuration.Configuration conf = GetConfigurationFile();
ConfigurationSection confSection = conf.GetSection(ConfigSectionName);
string configFilePath = GetConfigFilePath(conf, confSection);
XmlDocument configDoc = new XmlDocument();
configDoc.Load(configFilePath);
XmlNode configNode;
if (confSection.SectionInformation.ConfigSource == String.Empty)
{
configNode = configDoc.SelectSingleNode("*/*[local-name()='RelayNodeConfig']");
}
else
{
configNode = configDoc.DocumentElement;
}
RelayNodeConfig relayNodeConfig = GetRelayNodeConfig(configNode);
//object configObject = System.Configuration.ConfigurationManager.GetSection(RelayNodeSectionHandler.ConfigSectionName);
System.Configuration.ConfigurationManager.RefreshSection(RelayNodeSectionHandler.ConfigSectionName); //this will retrigger the watch
foreach (EventHandler handler in ReloadEventHandlers)
{
handler(relayNodeConfig, EventArgs.Empty);
}
}
catch (Exception ex)
{
if (log.IsErrorEnabled)
{
log.ErrorFormat("Exception processing relay system config reload: {0}", ex);
}
}
}
}
internal static RelayNodeConfig GetRelayNodeConfig(XmlNode section)
{
//XPathNavigator nav = section.CreateNavigator();
XmlSerializer ser = new XmlSerializer(typeof(RelayNodeConfig));
object configurationObject;
configurationObject = ser.Deserialize(new XmlNodeReader(section));
RelayNodeConfig typedConfig = configurationObject as RelayNodeConfig;
System.Configuration.Configuration confFile = GetConfigurationFile();
string basePath = confFile.FilePath;
if (typedConfig != null)
{
#region Get Sub Configs
foreach (XmlNode node in section.ChildNodes)
{
switch (node.Name)
{
case "RelayComponents":
RelayComponents comps = GetSourcedObject <RelayComponents>(basePath, node);
if (comps != null)
{
typedConfig.RelayComponents = comps.RelayComponentCollection;
}
else
{
if (log.IsErrorEnabled)
{
log.Error("No relay component config found.");
}
}
break;
case "TypeSettings":
TypeSettings typeSettings = GetSourcedObject <TypeSettings>(basePath, node);
if (typeSettings.TypeSettingCollection.Count == 0)
{
// attempt custom load
typeSettings = TypeSettingsConfigLoader.Load(basePath, node);
}
typedConfig.TypeSettings = typeSettings;
break;
case "RelayNodeMapping":
RelayNodeMapping nodeMapping = GetSourcedObject <RelayNodeMapping>(basePath, node);
typedConfig.RelayNodeMapping = nodeMapping;
break;
case "TransportSettings":
TransportSettings transportSettings = GetSourcedObject <TransportSettings>(basePath, node);
typedConfig.TransportSettings = transportSettings;
break;
}
}
#endregion
if (System.Web.HttpContext.Current == null) //not a web project, doesn't apply
{
WatchConfigFiles();
}
else
{
SectionInformation info = confFile.GetSection(RelayNodeSectionHandler.ConfigSectionName).SectionInformation;
if (!info.RestartOnExternalChanges)
{
WatchConfigFiles();
}
}
}
return(typedConfig);
}