C# Config.NLogXmlElement类代码示例

        private void ConfigureObjectFromAttributes(object targetObject, NLogXmlElement element, bool ignoreType)
        {
            var attributeValues = element.AttributeValues.ToList();
            foreach (var kvp in attributeValues)
            {
                string childName = kvp.Key;
                string childValue = kvp.Value;

                if (ignoreType && childName.Equals("type", StringComparison.OrdinalIgnoreCase))
                {
                    continue;
                }
                try
                {
                    PropertyHelper.SetPropertyFromString(targetObject, childName, this.ExpandSimpleVariables(childValue), this.ConfigurationItemFactory);
                }
                catch (NLogConfigurationException)
                {
                    InternalLogger.Warn("Error when setting '{0}' on attibute '{1}'", childValue, childName);
                    throw;
                }

            }
        }

        private void ParseIncludeElement(NLogXmlElement includeElement, string baseDirectory, bool autoReloadDefault)
        {
            includeElement.AssertName("include");

            string newFileName = includeElement.GetRequiredAttribute("file");

            try
            {
                newFileName = this.ExpandSimpleVariables(newFileName);
                newFileName = SimpleLayout.Evaluate(newFileName);
                if (baseDirectory != null)
                {
                    newFileName = Path.Combine(baseDirectory, newFileName);
                }

#if SILVERLIGHT
                newFileName = newFileName.Replace("\\", "/");
                if (Application.GetResourceStream(new Uri(newFileName, UriKind.Relative)) != null)
#else
                if (File.Exists(newFileName))
#endif
                {
                    InternalLogger.Debug("Including file '{0}'", newFileName);
                    this.ConfigureFromFile(newFileName, autoReloadDefault);
                }
                else
                {
                    throw new FileNotFoundException("Included file not found: " + newFileName);
                }
            }
            catch (Exception exception)
            {
                if (exception.MustBeRethrown())
                {
                    throw;
                }

                InternalLogger.Error("Error when including '{0}' {1}", newFileName, exception);

                if (includeElement.GetOptionalBooleanAttribute("ignoreErrors", false))
                {
                    return;
                }

                throw new NLogConfigurationException("Error when including: " + newFileName, exception);
            }
        }

        private void SetPropertyFromElement(object o, NLogXmlElement element)
        {
            if (this.AddArrayItemFromElement(o, element))
            {
                return;
            }

            if (this.SetLayoutFromElement(o, element))
            {
                return;
            }

            PropertyHelper.SetPropertyFromString(o, element.LocalName, this.ExpandSimpleVariables(element.Value), this.ConfigurationItemFactory);
        }

        private void ParseVariableElement(NLogXmlElement variableElement)
        {
            variableElement.AssertName("variable");

            string name = variableElement.GetRequiredAttribute("name");
            string value = this.ExpandSimpleVariables(variableElement.GetRequiredAttribute("value"));

            this.Variables[name] = value;
        }

        private void ParseTargetElement(Target target, NLogXmlElement targetElement)
        {
            var compound = target as CompoundTargetBase;
            var wrapper = target as WrapperTargetBase;

            this.ConfigureObjectFromAttributes(target, targetElement, true);

            foreach (var childElement in targetElement.Children)
            {
                string name = childElement.LocalName;

                if (compound != null)
                {
                    if (IsTargetRefElement(name))
                    {
                        string targetName = childElement.GetRequiredAttribute("name");
                        Target newTarget = this.FindTargetByName(targetName);
                        if (newTarget == null)
                        {
                            throw new NLogConfigurationException("Referenced target '" + targetName + "' not found.");
                        }

                        compound.Targets.Add(newTarget);
                        continue;
                    }

                    if (IsTargetElement(name))
                    {
                        string type = StripOptionalNamespacePrefix(childElement.GetRequiredAttribute("type"));

                        Target newTarget = this.ConfigurationItemFactory.Targets.CreateInstance(type);
                        if (newTarget != null)
                        {
                            this.ParseTargetElement(newTarget, childElement);
                            if (newTarget.Name != null)
                            {
                                // if the new target has name, register it
                                AddTarget(newTarget.Name, newTarget);
                            }

                            compound.Targets.Add(newTarget);
                        }

                        continue;
                    }
                }

                if (wrapper != null)
                {
                    if (IsTargetRefElement(name))
                    {
                        string targetName = childElement.GetRequiredAttribute("name");
                        Target newTarget = this.FindTargetByName(targetName);
                        if (newTarget == null)
                        {
                            throw new NLogConfigurationException("Referenced target '" + targetName + "' not found.");
                        }

                        wrapper.WrappedTarget = newTarget;
                        continue;
                    }

                    if (IsTargetElement(name))
                    {
                        string type = StripOptionalNamespacePrefix(childElement.GetRequiredAttribute("type"));

                        Target newTarget = this.ConfigurationItemFactory.Targets.CreateInstance(type);
                        if (newTarget != null)
                        {
                            this.ParseTargetElement(newTarget, childElement);
                            if (newTarget.Name != null)
                            {
                                // if the new target has name, register it
                                AddTarget(newTarget.Name, newTarget);
                            }

                            if (wrapper.WrappedTarget != null)
                            {
                                throw new NLogConfigurationException("Wrapped target already defined.");
                            }

                            wrapper.WrappedTarget = newTarget;
                        }

                        continue;
                    }
                }

                this.SetPropertyFromElement(target, childElement);
            }
        }

        /// <summary>
        /// Parse {NLog} xml element.
        /// </summary>
        /// <param name="nlogElement"></param>
        /// <param name="filePath">path to config file.</param>
        /// <param name="autoReloadDefault">The default value for the autoReload option.</param>
        private void ParseNLogElement(NLogXmlElement nlogElement, string filePath, bool autoReloadDefault)
        {
            InternalLogger.Trace("ParseNLogElement");
            nlogElement.AssertName("nlog");

            if (nlogElement.GetOptionalBooleanAttribute("useInvariantCulture", false))
            {
                this.DefaultCultureInfo = CultureInfo.InvariantCulture;
            }
#pragma warning disable 618
            this.ExceptionLoggingOldStyle = nlogElement.GetOptionalBooleanAttribute("exceptionLoggingOldStyle", false);
#pragma warning restore 618

            bool autoReload = nlogElement.GetOptionalBooleanAttribute("autoReload", autoReloadDefault);
            if (filePath != null)
                this.fileMustAutoReloadLookup[GetFileLookupKey(filePath)] = autoReload;
            
            LogManager.ThrowExceptions = nlogElement.GetOptionalBooleanAttribute("throwExceptions", LogManager.ThrowExceptions);
            InternalLogger.LogToConsole = nlogElement.GetOptionalBooleanAttribute("internalLogToConsole", InternalLogger.LogToConsole);
            InternalLogger.LogToConsoleError = nlogElement.GetOptionalBooleanAttribute("internalLogToConsoleError", InternalLogger.LogToConsoleError);
            InternalLogger.LogFile = nlogElement.GetOptionalAttribute("internalLogFile", InternalLogger.LogFile);
            InternalLogger.LogLevel = LogLevel.FromString(nlogElement.GetOptionalAttribute("internalLogLevel", InternalLogger.LogLevel.Name));
            LogManager.GlobalThreshold = LogLevel.FromString(nlogElement.GetOptionalAttribute("globalThreshold", LogManager.GlobalThreshold.Name));

            var children = nlogElement.Children;

            //first load the extensions, as the can be used in other elements (targets etc)
            var extensionsChilds = children.Where(child => child.LocalName.Equals("EXTENSIONS", StringComparison.InvariantCultureIgnoreCase));
            foreach (var extensionsChild in extensionsChilds)
            {
                this.ParseExtensionsElement(extensionsChild, Path.GetDirectoryName(filePath));
            }

            //parse all other direct elements
            foreach (var child in children)
            {
                switch (child.LocalName.ToUpper(CultureInfo.InvariantCulture))
                {
                    case "EXTENSIONS":
                        //already parsed
                        break;

                    case "INCLUDE":
                        this.ParseIncludeElement(child, Path.GetDirectoryName(filePath), autoReloadDefault: autoReload);
                        break;

                    case "APPENDERS":
                    case "TARGETS":
                        this.ParseTargetsElement(child);
                        break;

                    case "VARIABLE":
                        this.ParseVariableElement(child);
                        break;

                    case "RULES":
                        this.ParseRulesElement(child, this.LoggingRules);
                        break;

                    case "TIME":
                        this.ParseTimeElement(child);
                        break;

                    default:
                        InternalLogger.Warn("Skipping unknown node: {0}", child.LocalName);
                        break;
                }
            }
        }

        /// <summary>
        /// Parse {Logger} xml element
        /// </summary>
        /// <param name="loggerElement"></param>
        /// <param name="rulesCollection">Rules are added to this parameter.</param>
        private void ParseLoggerElement(NLogXmlElement loggerElement, IList<LoggingRule> rulesCollection)
        {
            loggerElement.AssertName("logger");

            var namePattern = loggerElement.GetOptionalAttribute("name", "*");
            var enabled = loggerElement.GetOptionalBooleanAttribute("enabled", true);
            if (!enabled)
            {
                InternalLogger.Debug("The logger named '{0}' are disabled");
                return;
            }

            var rule = new LoggingRule();
            string appendTo = loggerElement.GetOptionalAttribute("appendTo", null);
            if (appendTo == null)
            {
                appendTo = loggerElement.GetOptionalAttribute("writeTo", null);
            }

            rule.LoggerNamePattern = namePattern;
            if (appendTo != null)
            {
                foreach (string t in appendTo.Split(','))
                {
                    string targetName = t.Trim();
                    Target target = FindTargetByName(targetName);

                    if (target != null)
                    {
                        rule.Targets.Add(target);
                    }
                    else
                    {
                        throw new NLogConfigurationException("Target " + targetName + " not found.");
                    }
                }
            }

            rule.Final = loggerElement.GetOptionalBooleanAttribute("final", false);

            string levelString;

            if (loggerElement.AttributeValues.TryGetValue("level", out levelString))
            {
                LogLevel level = LogLevel.FromString(levelString);
                rule.EnableLoggingForLevel(level);
            }
            else if (loggerElement.AttributeValues.TryGetValue("levels", out levelString))
            {
                levelString = CleanSpaces(levelString);

                string[] tokens = levelString.Split(',');
                foreach (string s in tokens)
                {
                    if (!string.IsNullOrEmpty(s))
                    {
                        LogLevel level = LogLevel.FromString(s);
                        rule.EnableLoggingForLevel(level);
                    }
                }
            }
            else
            {
                int minLevel = 0;
                int maxLevel = LogLevel.MaxLevel.Ordinal;
                string minLevelString;
                string maxLevelString;

                if (loggerElement.AttributeValues.TryGetValue("minLevel", out minLevelString))
                {
                    minLevel = LogLevel.FromString(minLevelString).Ordinal;
                }

                if (loggerElement.AttributeValues.TryGetValue("maxLevel", out maxLevelString))
                {
                    maxLevel = LogLevel.FromString(maxLevelString).Ordinal;
                }

                for (int i = minLevel; i <= maxLevel; ++i)
                {
                    rule.EnableLoggingForLevel(LogLevel.FromOrdinal(i));
                }
            }

            foreach (var child in loggerElement.Children)
            {
                switch (child.LocalName.ToUpper(CultureInfo.InvariantCulture))
                {
                    case "FILTERS":
                        this.ParseFilters(rule, child);
                        break;

                    case "LOGGER":
                        this.ParseLoggerElement(child, rule.ChildRules);
                        break;
//.........这里部分代码省略.........

        /// <summary>
        /// Initializes the configuration.
        /// </summary>
        /// <param name="reader"><see cref="XmlReader"/> containing the configuration section.</param>
        /// <param name="fileName">Name of the file that contains the element (to be used as a base for including other files).</param>
        /// <param name="ignoreErrors">Ignore any errors during configuration.</param>
        private void Initialize(XmlReader reader, string fileName, bool ignoreErrors)
        {
            try
            {
                reader.MoveToContent();
                var content = new NLogXmlElement(reader);
                if (fileName != null)
                {
                    InternalLogger.Info("Configuring from an XML element in {0}...", fileName);
#if SILVERLIGHT
                    string key = fileName;
#else
                    string key = Path.GetFullPath(fileName);
#endif
                    this.visitedFile[key] = true;

                    this.originalFileName = fileName;
                    this.ParseTopLevel(content, Path.GetDirectoryName(fileName));
                }
                else
                {
                    this.ParseTopLevel(content, null);
                }
            }
            catch (Exception exception)
            {
                if (exception.MustBeRethrown())
                {
                    throw;
                }

                InternalLogger.Error("Error {0}...", exception);
                if (!ignoreErrors)
                {
                    throw new NLogConfigurationException("Exception occurred when loading configuration from " + fileName, exception);
                }
            }
        }

        private void ParseTopLevel(NLogXmlElement content, string baseDirectory)
        {
            content.AssertName("nlog", "configuration");

            switch (content.LocalName.ToUpper(CultureInfo.InvariantCulture))
            {
                case "CONFIGURATION":
                    this.ParseConfigurationElement(content, baseDirectory);
                    break;

                case "NLOG":
                    this.ParseNLogElement(content, baseDirectory);
                    break;
            }
        }

        private bool SetItemFromElement(object o, NLogXmlElement element)
        {
            if (element.Value != null)
                return false;

            string name = element.LocalName;

            PropertyInfo propInfo;
            if (!PropertyHelper.TryGetPropertyInfo(o, name, out propInfo))
            {
                return false;
            }

            object item = propInfo.GetValue(o, null);
            this.ConfigureObjectFromAttributes(item, element, true);
            this.ConfigureObjectFromElement(item, element);
            return true;
        }

        private Layout TryCreateLayoutInstance(NLogXmlElement element, Type type)
        {
            // Check if it is a Layout
            if (!typeof(Layout).IsAssignableFrom(type))
                return null;

            string layoutTypeName = StripOptionalNamespacePrefix(element.GetOptionalAttribute("type", null));

            // Check if the 'type' attribute has been specified
            if (layoutTypeName == null)
                return null;

            return this.ConfigurationItemFactory.Layouts.CreateInstance(this.ExpandSimpleVariables(layoutTypeName));
        }

        private bool SetLayoutFromElement(object o, NLogXmlElement layoutElement)
        {
            PropertyInfo targetPropertyInfo;
            string name = layoutElement.LocalName;

            // if property exists
            if (PropertyHelper.TryGetPropertyInfo(o, name, out targetPropertyInfo))
            {
                Layout layout = TryCreateLayoutInstance(layoutElement, targetPropertyInfo.PropertyType);

                // and is a Layout and 'type' attribute has been specified
                if (layout != null)
                {
                    this.ConfigureObjectFromAttributes(layout, layoutElement, true);
                    this.ConfigureObjectFromElement(layout, layoutElement);
                    targetPropertyInfo.SetValue(o, layout, null);
                    return true;
                }
            }

            return false;
        }

 /// <summary>
 /// Checks whether any error during XML configuration parsing has occured.
 /// If there are any and <c>ThrowConfigExceptions</c> or <c>ThrowExceptions</c>
 /// setting is enabled - throws <c>NLogConfigurationException</c>, otherwise
 /// just write an internal log at Warn level.
 /// </summary>
 /// <param name="rootContentElement">Root NLog configuration xml element</param>
 private void CheckParsingErrors(NLogXmlElement rootContentElement)
 {
     var parsingErrors = rootContentElement.GetParsingErrors().ToArray();
     if(parsingErrors.Any())
     {
         if (LogManager.ThrowConfigExceptions ?? LogManager.ThrowExceptions)
         {
             string exceptionMessage = string.Join(Environment.NewLine, parsingErrors);
             throw new NLogConfigurationException(exceptionMessage);
         }
         else
         {
             foreach (var parsingError in parsingErrors)
             {
                 InternalLogger.Log(LogLevel.Warn, parsingError);
             }
         }
     }
 }

        /// <summary>
        /// Initializes the configuration.
        /// </summary>
        /// <param name="reader"><see cref="XmlReader"/> containing the configuration section.</param>
        /// <param name="fileName">Name of the file that contains the element (to be used as a base for including other files).</param>
        /// <param name="ignoreErrors">Ignore any errors during configuration.</param>
        private void Initialize(XmlReader reader, string fileName, bool ignoreErrors)
        {
            try
            {
                InitializeSucceeded = null;
                reader.MoveToContent();
                var content = new NLogXmlElement(reader);
                if (fileName != null)
                {
                    this.originalFileName = fileName;
                    this.ParseTopLevel(content, fileName, autoReloadDefault: false);

                    InternalLogger.Info("Configured from an XML element in {0}...", fileName);
                }
                else
                {
                    this.ParseTopLevel(content, null, autoReloadDefault: false);
                }
                InitializeSucceeded = true;
                this.CheckParsingErrors(content);
                this.CheckUnusedTargets();

            }
            catch (Exception exception)
            {
                InitializeSucceeded = false;
                if (exception.MustBeRethrownImmediately())
                {
                    throw;
                }

                var configurationException = new NLogConfigurationException(exception, "Exception when parsing {0}. ", fileName);
                InternalLogger.Error(configurationException, "Parsing configuration from {0} failed.", fileName);

                if (!ignoreErrors)
                {
                    if (configurationException.MustBeRethrown())
                    {
                        throw configurationException;
                    }
                }

            }
        }

        /// <summary>
        /// Parse the root
        /// </summary>
        /// <param name="content"></param>
        /// <param name="filePath">path to config file.</param>
        /// <param name="autoReloadDefault">The default value for the autoReload option.</param>
        private void ParseTopLevel(NLogXmlElement content, string filePath, bool autoReloadDefault)
        {
            content.AssertName("nlog", "configuration");

            switch (content.LocalName.ToUpper(CultureInfo.InvariantCulture))
            {
                case "CONFIGURATION":
                    this.ParseConfigurationElement(content, filePath, autoReloadDefault);
                    break;

                case "NLOG":
                    this.ParseNLogElement(content, filePath, autoReloadDefault);
                    break;
            }
        }