/// <summary>
/// Creates message (sequential) handler instance depend on parameter value (could be get
/// from config).
/// </summary>
/// <param name="messageHandlerElement">Element from XML config.</param>
/// <returns>Fully initialized instance of message handler class.</returns>
/// <exception cref="ArgumentOutOfRangeException">
/// <paramref name="messageHandlerElement" /> isn't specified in XML config.
/// </exception>
/// <exception cref="ArgumentNullException">
/// <paramref name="messageHandlerElement" /> or its attribute with handler name is
/// <c>null</c>.
/// </exception>
public Communication.IMessageHandler CreateMessageHandler(XElement messageHandlerElement)
{
messageHandlerElement.ThrowIfNull(nameof(messageHandlerElement));
var handlerElement = messageHandlerElement.Attribute(_messageHandlerTypeParameterName);
handlerElement.ThrowIfNull(nameof(handlerElement));
switch (handlerElement.Value)
{
case _consoleMessageHandlerParameterName:
{
var messageHandlerParametersElement = XDocumentParser.FindSubelement(
messageHandlerElement, _setUnicodeParameterName
);
var setUnicode = XDocumentParser.GetElementValue <bool>(
messageHandlerParametersElement
);
return(new Communication.ConsoleMessageHandler(setUnicode));
}
default:
{
var ex = new ArgumentOutOfRangeException(
nameof(messageHandlerElement), messageHandlerElement,
"Couldn't recognize message handler type specified in XML config."
);
_logger.Error(ex, "Passed incorrect data to method: " +
$"{handlerElement.Value}");
throw ex;
}
}
}
/// <summary>
/// Creates message (sequential) handler instance depend on parameter value (could be get
/// from config).
/// </summary>
/// <param name="messageHandlerElement">Element from XML config.</param>
/// <returns>Fully initialized instance of message handler class.</returns>
/// <exception cref="ArgumentOutOfRangeException">
/// <paramref name="messageHandlerElement" /> isn't specified in XML config.
/// </exception>
/// <exception cref="ArgumentNullException">
/// <paramref name="messageHandlerElement" /> or its attribute with handler name is
/// <c>null</c>.
/// </exception>
public Communication.IMessageHandler CreateMessageHandler(XElement messageHandlerElement)
{
messageHandlerElement.ThrowIfNull(nameof(messageHandlerElement));
_logger.Info("Creating message handler.");
var handlerElement = messageHandlerElement.Attribute(_messageHandlerTypeParameterName);
handlerElement.ThrowIfNull(nameof(handlerElement));
switch (handlerElement.Value)
{
case _consoleMessageHandlerParameterName:
{
XElement?messageHandlerParametersElement = XDocumentParser.FindSubelement(
messageHandlerElement, _setUnicodeParameterName
);
if (messageHandlerParametersElement is null)
{
throw new ArgumentException(
"Invalid structure of XML document: cannot find message handler " +
"parameters block.",
nameof(messageHandlerElement)
);
}
var setUnicode = XDocumentParser.GetElementValue <bool>(
messageHandlerParametersElement
);
return(new Communication.ConsoleMessageHandler(setUnicode));
}
default:
{
throw new ArgumentOutOfRangeException(
nameof(messageHandlerElement), messageHandlerElement,
"Couldn't recognize message handler type specified in XML config."
);
}
}
}