/// <summary>
/// The current version of the NetStandard build of log4net does not replace environment variables.
/// We will use the same functionality to replace the environment variables before we pass the xml
/// into the standard XmlConfigurator
/// </summary>
/// <param name="xDocument"></param>
private void ReplaceEnvironmentVariables(XDocument xDocument)
{
var environmentVariables = new Hashtable(Environment.GetEnvironmentVariables(), StringComparer.OrdinalIgnoreCase);
var valueAttributes = xDocument
.Descendants()
.Select(x => x.Attribute("value"))
.Where(x => x != null);
foreach (var attribute in valueAttributes)
{
attribute.Value = OptionConverter.SubstituteVariables(attribute.Value, environmentVariables);
}
}
/// <summary>
/// Sets a parameter on an object.
/// </summary>
/// <param name="element">The parameter element.</param>
/// <param name="target">The object to set the parameter on.</param>
/// <remarks>
/// The parameter name must correspond to a writable property
/// on the object. The value of the parameter is a string,
/// therefore this function will attempt to set a string
/// property first. If unable to set a string property it
/// will inspect the property and its argument type. It will
/// attempt to call a static method called <c>Parse</c> on the
/// type of the property. This method will take a single
/// string argument and return a value that can be used to
/// set the property.
/// </remarks>
protected void SetParameter(XmlElement element, object target)
{
// Get the property name
string name = element.GetAttribute(NAME_ATTR);
// If the name attribute does not exist then use the name of the element
if (element.LocalName != PARAM_TAG || name == null || name.Length == 0)
{
name = element.LocalName;
}
// Look for the property on the target object
Type targetType = target.GetType();
Type propertyType = null;
PropertyInfo propInfo = null;
MethodInfo methInfo = null;
// Try to find a writable property
propInfo = targetType.GetProperty(name, BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.IgnoreCase);
if (propInfo != null && propInfo.CanWrite)
{
// found a property
propertyType = propInfo.PropertyType;
}
else
{
propInfo = null;
// look for a method with the signature Add<property>(type)
methInfo = FindMethodInfo(targetType, name);
if (methInfo != null)
{
propertyType = methInfo.GetParameters()[0].ParameterType;
}
}
if (propertyType == null)
{
LogLog.Error(declaringType, "XmlHierarchyConfigurator: Cannot find Property [" + name + "] to set object on [" + target.ToString() + "]");
}
else
{
string propertyValue = null;
if (element.GetAttributeNode(VALUE_ATTR) != null)
{
propertyValue = element.GetAttribute(VALUE_ATTR);
}
else if (element.HasChildNodes)
{
// Concatenate the CDATA and Text nodes together
foreach (XmlNode childNode in element.ChildNodes)
{
if (childNode.NodeType == XmlNodeType.CDATA || childNode.NodeType == XmlNodeType.Text)
{
if (propertyValue == null)
{
propertyValue = childNode.InnerText;
}
else
{
propertyValue += childNode.InnerText;
}
}
}
}
if (propertyValue != null)
{
#if !NETCF
try
{
// Expand environment variables in the string.
propertyValue = OptionConverter.SubstituteVariables(propertyValue, Environment.GetEnvironmentVariables());
}
catch (System.Security.SecurityException)
{
// This security exception will occur if the caller does not have
// unrestricted environment permission. If this occurs the expansion
// will be skipped with the following warning message.
LogLog.Debug(declaringType, "Security exception while trying to expand environment variables. Error Ignored. No Expansion.");
}
#endif
Type parsedObjectConversionTargetType = null;
// Check if a specific subtype is specified on the element using the 'type' attribute
string subTypeString = element.GetAttribute(TYPE_ATTR);
if (subTypeString != null && subTypeString.Length > 0)
{
// Read the explicit subtype
try
{
Type subType = SystemInfo.GetTypeFromString(subTypeString, true, true);
LogLog.Debug(declaringType, "Parameter [" + name + "] specified subtype [" + subType.FullName + "]");
if (!propertyType.IsAssignableFrom(subType))
{
// Check if there is an appropriate type converter
if (OptionConverter.CanConvertTypeTo(subType, propertyType))
{
// Must re-convert to the real property type
parsedObjectConversionTargetType = propertyType;
// Use sub type as intermediary type
propertyType = subType;
}
else
{
LogLog.Error(declaringType, "subtype [" + subType.FullName + "] set on [" + name + "] is not a subclass of property type [" + propertyType.FullName + "] and there are no acceptable type conversions.");
}
}
else
{
// The subtype specified is found and is actually a subtype of the property
// type, therefore we can switch to using this type.
propertyType = subType;
}
}
catch (Exception ex)
{
LogLog.Error(declaringType, "Failed to find type [" + subTypeString + "] set on [" + name + "]", ex);
}
}
// Now try to convert the string value to an acceptable type
// to pass to this property.
object convertedValue = ConvertStringTo(propertyType, propertyValue);
// Check if we need to do an additional conversion
if (convertedValue != null && parsedObjectConversionTargetType != null)
{
LogLog.Debug(declaringType, "Performing additional conversion of value from [" + convertedValue.GetType().Name + "] to [" + parsedObjectConversionTargetType.Name + "]");
convertedValue = OptionConverter.ConvertTypeTo(convertedValue, parsedObjectConversionTargetType);
}
if (convertedValue != null)
{
if (propInfo != null)
{
// Got a converted result
LogLog.Debug(declaringType, "Setting Property [" + propInfo.Name + "] to " + convertedValue.GetType().Name + " value [" + convertedValue.ToString() + "]");
try
{
// Pass to the property
propInfo.SetValue(target, convertedValue, BindingFlags.SetProperty, null, null, CultureInfo.InvariantCulture);
}
catch (TargetInvocationException targetInvocationEx)
{
LogLog.Error(declaringType, "Failed to set parameter [" + propInfo.Name + "] on object [" + target + "] using value [" + convertedValue + "]", targetInvocationEx.InnerException);
}
}
else if (methInfo != null)
{
// Got a converted result
LogLog.Debug(declaringType, "Setting Collection Property [" + methInfo.Name + "] to " + convertedValue.GetType().Name + " value [" + convertedValue.ToString() + "]");
try
{
// Pass to the property
methInfo.Invoke(target, BindingFlags.InvokeMethod, null, new object[] { convertedValue }, CultureInfo.InvariantCulture);
}
catch (TargetInvocationException targetInvocationEx)
{
LogLog.Error(declaringType, "Failed to set parameter [" + name + "] on object [" + target + "] using value [" + convertedValue + "]", targetInvocationEx.InnerException);
}
}
}
else
{
LogLog.Warn(declaringType, "Unable to set property [" + name + "] on object [" + target + "] using value [" + propertyValue + "] (with acceptable conversion types)");
}
}
else
{
object createdObject = null;
if (propertyType == typeof(string) && !HasAttributesOrElements(element))
{
// If the property is a string and the element is empty (no attributes
// or child elements) then we special case the object value to an empty string.
// This is necessary because while the String is a class it does not have
// a default constructor that creates an empty string, which is the behavior
// we are trying to simulate and would be expected from CreateObjectFromXml
createdObject = "";
}
else
{
// No value specified
Type defaultObjectType = null;
if (IsTypeConstructible(propertyType))
{
defaultObjectType = propertyType;
}
createdObject = CreateObjectFromXml(element, defaultObjectType, propertyType);
}
if (createdObject == null)
{
LogLog.Error(declaringType, "Failed to create object to set param: " + name);
}
else
{
if (propInfo != null)
{
// Got a converted result
LogLog.Debug(declaringType, "Setting Property [" + propInfo.Name + "] to object [" + createdObject + "]");
try
{
// Pass to the property
propInfo.SetValue(target, createdObject, BindingFlags.SetProperty, null, null, CultureInfo.InvariantCulture);
}
catch (TargetInvocationException targetInvocationEx)
{
LogLog.Error(declaringType, "Failed to set parameter [" + propInfo.Name + "] on object [" + target + "] using value [" + createdObject + "]", targetInvocationEx.InnerException);
}
}
else if (methInfo != null)
{
// Got a converted result
LogLog.Debug(declaringType, "Setting Collection Property [" + methInfo.Name + "] to object [" + createdObject + "]");
try
{
// Pass to the property
methInfo.Invoke(target, BindingFlags.InvokeMethod, null, new object[] { createdObject }, CultureInfo.InvariantCulture);
}
catch (TargetInvocationException targetInvocationEx)
{
LogLog.Error(declaringType, "Failed to set parameter [" + methInfo.Name + "] on object [" + target + "] using value [" + createdObject + "]", targetInvocationEx.InnerException);
}
}
}
}
}
}
protected void SetParameter(XmlElement element, object target)
{
string attribute = element.GetAttribute("name");
if ((element.LocalName != "param") || ((attribute == null) || (attribute.Length == 0)))
{
attribute = element.LocalName;
}
Type targetType = target.GetType();
Type objA = null;
PropertyInfo property = null;
MethodInfo info2 = null;
property = targetType.GetProperty(attribute, BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Instance | BindingFlags.IgnoreCase);
if ((property != null) && property.CanWrite)
{
objA = property.PropertyType;
}
else
{
property = null;
info2 = this.FindMethodInfo(targetType, attribute);
if (info2 != null)
{
objA = info2.GetParameters()[0].ParameterType;
}
}
if (objA == null)
{
string[] textArray1 = new string[] { "XmlHierarchyConfigurator: Cannot find Property [", attribute, "] to set object on [", target.ToString(), "]" };
LogLog.Error(declaringType, string.Concat(textArray1));
}
else
{
string str2 = null;
if (element.GetAttributeNode("value") != null)
{
str2 = element.GetAttribute("value");
}
else if (element.HasChildNodes)
{
IEnumerator enumerator = element.ChildNodes.GetEnumerator();
try
{
while (enumerator.MoveNext())
{
XmlNode current = (XmlNode)enumerator.Current;
if ((current.NodeType == XmlNodeType.CDATA) || (current.NodeType == XmlNodeType.Text))
{
str2 = (str2 != null) ? (str2 + current.InnerText) : current.InnerText;
}
}
}
finally
{
IDisposable disposable = enumerator as IDisposable;
if (disposable != null)
{
disposable.Dispose();
}
}
}
if (str2 == null)
{
object obj3 = null;
if (ReferenceEquals(objA, typeof(string)) && !this.HasAttributesOrElements(element))
{
obj3 = string.Empty;
}
else
{
Type defaultTargetType = null;
if (IsTypeConstructible(objA))
{
defaultTargetType = objA;
}
obj3 = this.CreateObjectFromXml(element, defaultTargetType, objA);
}
if (obj3 == null)
{
LogLog.Error(declaringType, "Failed to create object to set param: " + attribute);
}
else if (property != null)
{
object[] objArray5 = new object[] { "Setting Property [", property.Name, "] to object [", obj3, "]" };
LogLog.Debug(declaringType, string.Concat(objArray5));
try
{
property.SetValue(target, obj3, BindingFlags.SetProperty, null, null, CultureInfo.InvariantCulture);
}
catch (TargetInvocationException exception4)
{
object[] objArray6 = new object[] { "Failed to set parameter [", property.Name, "] on object [", target, "] using value [", obj3, "]" };
LogLog.Error(declaringType, string.Concat(objArray6), exception4.InnerException);
}
}
else if (info2 != null)
{
object[] objArray7 = new object[] { "Setting Collection Property [", info2.Name, "] to object [", obj3, "]" };
LogLog.Debug(declaringType, string.Concat(objArray7));
try
{
object[] parameters = new object[] { obj3 };
info2.Invoke(target, BindingFlags.InvokeMethod, null, parameters, CultureInfo.InvariantCulture);
}
catch (TargetInvocationException exception5)
{
object[] objArray9 = new object[] { "Failed to set parameter [", info2.Name, "] on object [", target, "] using value [", obj3, "]" };
LogLog.Error(declaringType, string.Concat(objArray9), exception5.InnerException);
}
}
}
else
{
try
{
IDictionary environmentVariables = Environment.GetEnvironmentVariables();
if (this.HasCaseInsensitiveEnvironment)
{
environmentVariables = this.CreateCaseInsensitiveWrapper(environmentVariables);
}
str2 = OptionConverter.SubstituteVariables(str2, environmentVariables);
}
catch (SecurityException)
{
LogLog.Debug(declaringType, "Security exception while trying to expand environment variables. Error Ignored. No Expansion.");
}
Type type3 = null;
string typeName = element.GetAttribute("type");
if ((typeName != null) && (typeName.Length > 0))
{
try
{
Type c = SystemInfo.GetTypeFromString(typeName, true, true);
string[] textArray2 = new string[] { "Parameter [", attribute, "] specified subtype [", c.FullName, "]" };
LogLog.Debug(declaringType, string.Concat(textArray2));
if (objA.IsAssignableFrom(c))
{
objA = c;
}
else if (OptionConverter.CanConvertTypeTo(c, objA))
{
type3 = objA;
objA = c;
}
else
{
string[] textArray3 = new string[] { "subtype [", c.FullName, "] set on [", attribute, "] is not a subclass of property type [", objA.FullName, "] and there are no acceptable type conversions." };
LogLog.Error(declaringType, string.Concat(textArray3));
}
}
catch (Exception exception)
{
string[] textArray4 = new string[] { "Failed to find type [", typeName, "] set on [", attribute, "]" };
LogLog.Error(declaringType, string.Concat(textArray4), exception);
}
}
object sourceInstance = this.ConvertStringTo(objA, str2);
if ((sourceInstance != null) && (type3 != null))
{
string[] textArray5 = new string[] { "Performing additional conversion of value from [", sourceInstance.GetType().Name, "] to [", type3.Name, "]" };
LogLog.Debug(declaringType, string.Concat(textArray5));
sourceInstance = OptionConverter.ConvertTypeTo(sourceInstance, type3);
}
if (sourceInstance == null)
{
object[] objArray4 = new object[] { "Unable to set property [", attribute, "] on object [", target, "] using value [", str2, "] (with acceptable conversion types)" };
LogLog.Warn(declaringType, string.Concat(objArray4));
}
else if (property != null)
{
string[] textArray6 = new string[] { "Setting Property [", property.Name, "] to ", sourceInstance.GetType().Name, " value [", sourceInstance.ToString(), "]" };
LogLog.Debug(declaringType, string.Concat(textArray6));
try
{
property.SetValue(target, sourceInstance, BindingFlags.SetProperty, null, null, CultureInfo.InvariantCulture);
}
catch (TargetInvocationException exception2)
{
object[] objArray1 = new object[] { "Failed to set parameter [", property.Name, "] on object [", target, "] using value [", sourceInstance, "]" };
LogLog.Error(declaringType, string.Concat(objArray1), exception2.InnerException);
}
}
else if (info2 != null)
{
string[] textArray7 = new string[] { "Setting Collection Property [", info2.Name, "] to ", sourceInstance.GetType().Name, " value [", sourceInstance.ToString(), "]" };
LogLog.Debug(declaringType, string.Concat(textArray7));
try
{
object[] parameters = new object[] { sourceInstance };
info2.Invoke(target, BindingFlags.InvokeMethod, null, parameters, CultureInfo.InvariantCulture);
}
catch (TargetInvocationException exception3)
{
object[] objArray3 = new object[] { "Failed to set parameter [", attribute, "] on object [", target, "] using value [", sourceInstance, "]" };
LogLog.Error(declaringType, string.Concat(objArray3), exception3.InnerException);
}
}
}
}
}