Custom pipeline component creates the folder name to archive messages

Question

Hi 
I have an requirement that a BizTalk application is receiving untyped messages and at the receive location the pipeline have to archive the incoming message with the specifications:
suppose I have an xml like
      <PurchaseOrder>
        <OrderId>1001</OrderId>
        <OrderSource>XYZ</OrderSource>
        <Code>O01</Code>
      </PartyType>
In the pipeline component it has to read this xml and have to use OrderSource value 'XYZ' to create a archival folder and the message have to archive with file name '%MessageId%'
It has to be done by writing custom pipeline component where I am not familiar with c# coding, Can anyone please how to implement mechanism.
Thanks In Advance
Regards
Arun
ArunReddy

Answer 1

Hi Arun,
Use
BizTalk Server Pipeline Component Wizard to create a decode pipeline component for receive. Install this wizard. This shall help you to create the template project for your pipeline component stage.
Use the following code in the Execute method of the pipeline component code. This code archives the file based with name of the file name received.
public Microsoft.BizTalk.Message.Interop.IBaseMessage Execute(Microsoft.BizTalk.Component.Interop.IPipelineContext pc, Microsoft.BizTalk.Message.Interop.IBaseMessage inmsg)
MemoryStream tmpStream = new MemoryStream();
try
string strReceivedFilename = null;
DateTime d = DateTime.Now;
try
//Get the file name
strReceivedFilename = inmsg.Context.Read("ReceivedFileName", "http://schemas.microsoft.com/BizTalk/2003/file-properties").ToString();
if (strReceivedFilename.Contains("\\"))
strReceivedFilename = strReceivedFilename.Substring(strReceivedFilename.LastIndexOf("\\") + 1, strReceivedFilename.Length - strReceivedFilename.LastIndexOf("\\") - 1);
catch
strReceivedFilename = System.Guid.NewGuid().ToString();
originalStream = inmsg.BodyPart.GetOriginalDataStream();
int readCount;
byte[] buffer = new byte[1024];
// Copy the entire stream into a tmpStream, so that it can be seakable.
while ((readCount = originalStream.Read(buffer, 0, 1024)) > 0)
tmpStream.Write(buffer, 0, readCount);
tmpStream.Seek(0, SeekOrigin.Begin);
//ToDo for you..
//Access the receive message content using standard XPathReader to access values of OrderSource and construct file pathAccess the receive message content using standard XPathReader to acceess values of OrderSource and contruct the file path
string strFilePath = //Hold the value of the file path with the value of OrderSource
string strCurrentTime = d.ToString("HH_mm_ss.ffffff");
strFilePath += "\\" + strReceivedFilename + "_";
FileStream fileStream = null;
try
System.Threading.Thread.Sleep(1);
fileStream = new FileStream(strFilePath + strCurrentTime + ".dat", FileMode.CreateNew);
catch (System.IO.IOException e)
// Handle the exception, it must be 'File already exists error'
// Wait for 10ms, change the file name and try creating the file again
// If the second 'file create' also fails, it must be a genuine error, it'll be thrown to BTS engine
System.Threading.Thread.Sleep(10);
strCurrentTime = d.ToString("HH_mm_ss.ffffff"); // get current time again
string dtcurrentTime = DateTime.Now.ToString("yyyy-MM-ddHH_mm_ss.ffffff");
fileStream = new FileStream(strFilePath + strCurrentTime + ".dat", FileMode.CreateNew);
while ((readCount = tmpStream.Read(buffer, 0, 1024)) > 0)
fileStream.Write(buffer, 0, readCount);
if (fileStream != null)
fileStream.Close();
fileStream.Dispose();
if (originalStream.CanSeek)
originalStream.Seek(0, SeekOrigin.Begin);
else
ReadOnlySeekableStream seekableStream = new ReadOnlySeekableStream(originalStream);
seekableStream.Position = 0;
inmsg.BodyPart.Data = seekableStream;
tmpStream.Dispose();
catch (Exception ex)
System.Diagnostics.EventLog.WriteEntry("Archive Pipeline Error", string.Format("MessageArchiver failed: {0}", ex.Message));
finally
if (tmpStream != null)
tmpStream.Flush();
tmpStream.Close();
if (originalStream.CanSeek)
originalStream.Seek(0, SeekOrigin.Begin);
return inmsg;
In the above code, you have do a section of code which will access the receive message content using standard XPathReader to access values of OrderSource and construct the file path. I have
commented the place where you have to do the same. You can read the XPathReader about here..http://blogs.msdn.com/b/momalek/archive/2011/12/21/streamed-xpath-extraction-using-hidden-biztalk-class-xpathreader.aspx
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