/// <summary>
/// Helper function to read an XML element (not a full document)
/// representing a cloud execution request.
/// </summary>
/// <remarks>
/// Note that the XmlReader is expected to be positioned in the XML
/// document such that the current node is a request element.
/// </remarks>
/// <param name="xr">The XmlReader object to read from.</param>
/// <returns>
/// A new request corresponding to the XML representation read.
/// </returns>
public static CloudExecutionRequest ReadXml(XmlReader xr)
{
Util.Assert(xr.Name.Equals(CloudExecutionRequest.XmlTag));
string versionText = xr.GetAttribute(CloudExecutionRequest.XmlVersionAttribute);
int version = int.Parse(versionText, CultureInfo.InvariantCulture);
string reportQueue = "reports";
string identifier = string.Empty;
Operation operation = Operation.RunExecutable;
string executable = string.Empty;
string arguments = string.Empty;
bool inInputFileMappings = false;
List <BuildObjectValuePointer> inputFileMappings = new List <BuildObjectValuePointer>();
bool inOutputFiles = false;
List <BuildObject> outputFiles = new List <BuildObject>();
while (xr.Read())
{
if (xr.NodeType == XmlNodeType.Element)
{
switch (xr.Name)
{
case XmlReportQueueElement:
reportQueue = xr.ReadElementContentAsString();
break;
case XmlIdentifierElement:
identifier = xr.ReadElementContentAsString();
break;
case XmlOperationElement:
operation = (Operation)Enum.Parse(typeof(Operation), xr.ReadElementContentAsString());
break;
case XmlExecutableElement:
executable = xr.ReadElementContentAsString();
break;
case XmlArgumentsElement:
arguments = xr.ReadElementContentAsString();
break;
case XmlInputFileMappingsElement:
inInputFileMappings = true;
break;
case BuildObjectValuePointer.XmlTag:
Util.Assert(inInputFileMappings);
inputFileMappings.Add(BuildObjectValuePointer.ReadXml(xr));
break;
case XmlOutputFilesElement:
inOutputFiles = true;
break;
case BuildObject.XmlTag:
Util.Assert(inOutputFiles);
outputFiles.Add(BuildObject.ReadXml(xr));
break;
}
}
else if (xr.NodeType == XmlNodeType.EndElement)
{
if (xr.Name.Equals(CloudExecutionRequest.XmlTag))
{
break; // All done.
}
switch (xr.Name)
{
case XmlInputFileMappingsElement:
inInputFileMappings = false;
break;
case XmlOutputFilesElement:
inOutputFiles = false;
break;
}
}
}
// REVIEW: Require presence of (some/all) elements? Sanity check things here?
return(new CloudExecutionRequest(
version,
reportQueue,
identifier,
operation,
executable,
arguments,
inputFileMappings,
outputFiles));
}
