Code:
/ FX-1434 / FX-1434 / 1.0 / untmp / whidbey / REDBITS / ndp / fx / src / Services / Monitoring / system / Diagnosticts / DiagnosticsConfigurationHandler.cs / 1 / DiagnosticsConfigurationHandler.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- #if !LIB #define TRACE #define DEBUG namespace System.Diagnostics { using System; using System.Collections; using System.Diagnostics; using System.Xml; using System.Configuration; using System.Reflection; using System.Globalization; ////// The configuration section handler for the diagnostics section of the configuration /// file. The section handler participates in the resolution of configuration settings /// between the <diagnostics> and </diagnostics>portion of the .config file. /// ///[Obsolete("This class has been deprecated. http://go.microsoft.com/fwlink/?linkid=14202")] public class DiagnosticsConfigurationHandler : IConfigurationSectionHandler { /// /// ///Parses the configuration settings between the /// <diagnostics> and </diagnostics> portion of the .config file to populate /// the values of 'WebServicesConfiguration' object and returning it. /// ///public virtual object Create(object parent, object configContext, XmlNode section) { bool foundSwitches = false; bool foundAssert = false; bool foundTrace = false; bool foundCounters = false; HandlerBase.CheckForUnrecognizedAttributes(section); // Since the tracing and switch code lives in System.Dll and config is in System.Configuration.dll // the settings just go into a hashtable to communicate to the values to the diagnostics code in System.dll Hashtable parentConfig = (Hashtable)parent; Hashtable config; if (parentConfig == null) config = new Hashtable(); else config = (Hashtable)parentConfig.Clone(); foreach (XmlNode child in section.ChildNodes) { if (HandlerBase.IsIgnorableAlsoCheckForNonElement(child)) continue; switch (child.Name) { case "switches": if (foundSwitches) throw new ConfigurationErrorsException(SR.GetString(SR.ConfigSectionsUnique, "switches")); foundSwitches = true; HandleSwitches(config, child, configContext); break; case "assert": if (foundAssert) throw new ConfigurationErrorsException(SR.GetString(SR.ConfigSectionsUnique, "assert")); foundAssert = true; HandleAssert(config, child, configContext); break; case "trace": if (foundTrace) throw new ConfigurationErrorsException(SR.GetString(SR.ConfigSectionsUnique, "trace")); foundTrace = true; HandleTrace(config, child, configContext); break; case "performanceCounters": if (foundCounters) throw new ConfigurationErrorsException(SR.GetString(SR.ConfigSectionsUnique, "performanceCounters")); foundCounters = true; HandleCounters((Hashtable)parent, config, child, configContext); break; default: HandlerBase.ThrowUnrecognizedElement(child); break; } // switch(child.Name) HandlerBase.CheckForUnrecognizedAttributes(child); } return config; } private static void HandleSwitches(Hashtable config, XmlNode switchesNode, object context) { Hashtable switches = (Hashtable) new SwitchesDictionarySectionHandler().Create(config["switches"], context, switchesNode); IDictionaryEnumerator en = switches.GetEnumerator(); while (en.MoveNext()) { try { Int32.Parse((string) en.Value, CultureInfo.InvariantCulture); } catch { throw new ConfigurationErrorsException(SR.GetString(SR.Value_must_be_numeric, en.Key)); } } config["switches"] = switches; } private static void HandleAssert(Hashtable config, XmlNode assertNode, object context) { bool assertuienabled = false; if (HandlerBase.GetAndRemoveBooleanAttribute(assertNode, "assertuienabled", ref assertuienabled) != null) config["assertuienabled"] = assertuienabled; string logfilename = null; if (HandlerBase.GetAndRemoveStringAttribute(assertNode, "logfilename", ref logfilename) != null) config["logfilename"] = logfilename; HandlerBase.CheckForChildNodes(assertNode); } private static void HandleCounters(Hashtable parent, Hashtable config, XmlNode countersNode, object context) { int filemappingsize = 0; if (HandlerBase.GetAndRemoveIntegerAttribute(countersNode, "filemappingsize", ref filemappingsize) != null) { //Should only be handled at machine config level if (parent == null) config["filemappingsize"] = filemappingsize; } HandlerBase.CheckForChildNodes(countersNode); } private static void HandleTrace(Hashtable config, XmlNode traceNode, object context) { bool foundListeners = false; bool autoflush = false; if (HandlerBase.GetAndRemoveBooleanAttribute(traceNode, "autoflush", ref autoflush) != null) config["autoflush"] = autoflush; int indentsize = 0; if (HandlerBase.GetAndRemoveIntegerAttribute(traceNode, "indentsize", ref indentsize) != null) config["indentsize"] = indentsize; foreach (XmlNode traceChild in traceNode.ChildNodes) { if (HandlerBase.IsIgnorableAlsoCheckForNonElement(traceChild)) continue; if (traceChild.Name == "listeners") { if (foundListeners) throw new ConfigurationErrorsException(SR.GetString(SR.ConfigSectionsUnique, "listeners")); foundListeners = true; HandleListeners(config, traceChild, context); } else { HandlerBase.ThrowUnrecognizedElement(traceChild); } } } private static void HandleListeners(Hashtable config, XmlNode listenersNode, object context) { HandlerBase.CheckForUnrecognizedAttributes(listenersNode); foreach (XmlNode listenersChild in listenersNode.ChildNodes) { if (HandlerBase.IsIgnorableAlsoCheckForNonElement(listenersChild)) continue; string name = null, className = null, initializeData = null; string op = listenersChild.Name; switch (op) { case "add": case "remove": case "clear": break; default: HandlerBase.ThrowUnrecognizedElement(listenersChild); break; } HandlerBase.GetAndRemoveStringAttribute(listenersChild, "name", ref name); HandlerBase.GetAndRemoveStringAttribute(listenersChild, "type", ref className); HandlerBase.GetAndRemoveStringAttribute(listenersChild, "initializeData", ref initializeData); HandlerBase.CheckForUnrecognizedAttributes(listenersChild); HandlerBase.CheckForChildNodes(listenersChild); TraceListener newListener = null; if (className != null) { Type t = Type.GetType(className); if (t == null) throw new ConfigurationErrorsException(SR.GetString(SR.Could_not_find_type, className)); if (!typeof(TraceListener).IsAssignableFrom(t)) throw new ConfigurationErrorsException(SR.GetString(SR.Type_isnt_tracelistener, className)); // create a listener with parameterless constructor if (initializeData == null) { ConstructorInfo ctorInfo = t.GetConstructor(new Type[] {}); if (ctorInfo == null) throw new ConfigurationErrorsException(SR.GetString(SR.Could_not_get_constructor, className)); newListener = (TraceListener)(ctorInfo.Invoke(new object[] {})); } // create a listener with a one-string constructor else { ConstructorInfo ctorInfo = t.GetConstructor(new Type[] { typeof(string) }); if (ctorInfo == null) throw new ConfigurationErrorsException(SR.GetString(SR.Could_not_get_constructor, className)); newListener = (TraceListener)(ctorInfo.Invoke(new object[] { initializeData })); } if (name != null) { newListener.Name = name; } } // we already verified above that we only have "add", "remove", or "clear", so we can // switch on the first char here for perf. switch (op[0]) { case 'a': if (newListener == null) throw new ConfigurationErrorsException(SR.GetString(SR.Could_not_create_listener, name)); Trace.Listeners.Add(newListener); break; case 'r': if (newListener == null) { // no type specified, we'll have to delete by name // if no name is specified we can't do anything if (name == null) throw new ConfigurationErrorsException(SR.GetString(SR.Cannot_remove_with_null)); Trace.Listeners.Remove(name); } else { // remove by listener Trace.Listeners.Remove(newListener); } break; case 'c': Trace.Listeners.Clear(); break; default: HandlerBase.ThrowUnrecognizedElement(listenersChild); break; } } } } internal class SwitchesDictionarySectionHandler : DictionarySectionHandler { protected override string KeyAttributeName { get { return "name";} } internal override bool ValueRequired { get { return true; } } } } #endif
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