public IBaseMessage Execute(IPipelineContext pContext, IBaseMessage pInMsg)
{
if (!Enabled)
{
return(pInMsg);
}
string errorMessage;
if (!Validate(out errorMessage))
{
throw new ArgumentException(errorMessage);
}
var contentReader = new ContentReader();
var data = pInMsg.BodyPart.GetOriginalDataStream();
const int bufferSize = 0x280;
const int thresholdSize = 0x100000;
if (!data.CanSeek || !data.CanRead)
{
data = new ReadOnlySeekableStream(data, new VirtualStream(bufferSize, thresholdSize), bufferSize);
pContext.ResourceTracker.AddResource(data);
}
if (contentReader.IsXmlContent(data))
{
var encoding = contentReader.Encoding(data);
string nodeFormat = ShowPropertyInfoAsNodes ?
"<property><name>{0}</name><namespace>{1}</namespace><promoted>{2}</promoted><value>{3}</value></property>"
: "<property name=\"{0}\" namespace=\"{1}\" promoted=\"{2}\">{3}</property>";
string msgctx = "", propName, propNS;
object retval;
if (string.IsNullOrEmpty(SelectedProperties))
{
for (int i = 0; i < pInMsg.Context.CountProperties; i++)
{
retval = pInMsg.Context.ReadAt(i, out propName, out propNS);
msgctx += string.Format(nodeFormat, propName, propNS, pInMsg.Context.IsPromoted(propName, propNS), retval);
}
}
else
{
var selectedProps = SelectedProperties.Split(new char[] { ';' }, StringSplitOptions.RemoveEmptyEntries);
for (int i = 0; i < selectedProps.Length; i++)
{
var property = new ContextProperty(selectedProps[i]);
retval = pInMsg.Context.Read(property);
if (retval != null)
{
msgctx += string.Format(nodeFormat, property.PropertyName, property.PropertyNamespace, pInMsg.Context.IsPromoted(property), retval);
}
}
}
msgctx = "<messagecontext>" + msgctx + "</messagecontext>";
data = new CommentInjector(data, msgctx, encoding);
data = new ReadOnlySeekableStream(data, new VirtualStream(bufferSize, thresholdSize), bufferSize);
pContext.ResourceTracker.AddResource(data);
pInMsg.BodyPart.Data = data;
}
else
{
data.Seek(0, SeekOrigin.Begin);
pInMsg.BodyPart.Data = data;
}
return(pInMsg);
}