C# NLogXmlElement.GetOptionalAttribute方法代码示例

        /// <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>
        /// 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;
                }
            }
        }

        private void ParseNLogElement(NLogXmlElement nlogElement, string baseDirectory)
        {
            InternalLogger.Trace("ParseNLogElement");
            nlogElement.AssertName("nlog");

            this.AutoReload = nlogElement.GetOptionalBooleanAttribute("autoReload", false);
            LogManager.ThrowExceptions = nlogElement.GetOptionalBooleanAttribute("throwExceptions", LogManager.ThrowExceptions);
            InternalLogger.LogToConsole = nlogElement.GetOptionalBooleanAttribute("internalLogToConsole", InternalLogger.LogToConsole);
#if !NET_CF
            InternalLogger.LogToConsoleError = nlogElement.GetOptionalBooleanAttribute("internalLogToConsoleError", InternalLogger.LogToConsoleError);
#endif
            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));

            foreach (var el in nlogElement.Children)
            {
                switch (el.LocalName.ToUpper(CultureInfo.InvariantCulture))
                {
                    case "EXTENSIONS":
                        this.ParseExtensionsElement(el, baseDirectory);
                        break;

                    case "INCLUDE":
                        this.ParseIncludeElement(el, baseDirectory);
                        break;

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

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

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

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

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

            // if property exists
            if (PropertyHelper.TryGetPropertyInfo(o, name, out targetPropertyInfo))
            {
                // and is a Layout
                if (typeof(Layout).IsAssignableFrom(targetPropertyInfo.PropertyType))
                {
                    string layoutTypeName = StripOptionalNamespacePrefix(layoutElement.GetOptionalAttribute("type", null));

                    // and 'type' attribute has been specified
                    if (layoutTypeName != null)
                    {
                        // configure it from current element
                        Layout layout = this.ConfigurationItemFactory.Layouts.CreateInstance(this.ExpandSimpleVariables(layoutTypeName));
                        this.ConfigureObjectFromAttributes(layout, layoutElement, true);
                        this.ConfigureObjectFromElement(layout, layoutElement);
                        targetPropertyInfo.SetValue(o, layout, null);
                        return true;
                    }
                }
            }

            return false;
        }

        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));
        }