I am using BizTalk 2004
I have an orchestration that has exception block that sends out the actual log file it is creating before it hit an exception.
here is the design:
My log file message may contain several record instances, say: (I added "-" in the nodes so you can see the sample)
<-log>
<-record>
<-node1 />
<-node2 />
<-/record>
<-record>
<-node1 />
<-node2 />
<-/record>
<-/log>
I have an overall scope in Long Running Transaction with an exception block that catches System.Exception
Inside the scope is the overall processing of my request message containing several records. The log file is initially constructed with just the header (log), then the log file is updated in a loop for the records, wherein it gets the records from the request which is processed individually to a single xml. It will loop through each individual xml, then adds the record in the log file.
this constructed log file is being sent out successfully after the loop processing. Now I want to send the log file constructed when an exception is hit. As I said, the log file is being updated and constructed in the loop. but when I tried sending the log file inside the exception block, I hit the "Use of Unconstructed Message" thing, so I tried saving the log file in an xmldocument then construct the message inside the exception block with the xmldocument, but I then have the "Use of unconstructed Message" thing for the xmlDocument itself
If you can show me how I can successfully send the log file inside the exception block in a long running transaction scope will be greatly appreciated.
Thanks in advance!
If I understand your description correctly the problem is that you are creating a message in the scope, which you then wish to use in the exception handler of the very same scope.
As far as the compiler is concerns, there cannot be any guarantees that the message would be constructed before an exception is thrown, in which case the exception handler may execute with the message being unconstructed.
This will happen if you have a failure in the scope before, or at, the message construct shape.
To solve this you must construct the message initially before the scope whose exception handler uses the message. you can then go and re-construct the shape inside the scope, but this would guarentee that, when hitting the exception handler, a message will exist, one way or another.
Related
I have a pipeline that is working for a file receive location. This pipeline accepts a csv file and maps it to an XML.
I'm now trying to setup a new email receive location using the same port, pipeline and pipeline settings.
Shouldn't biztalk ignore everything but the attachment if I set the body part index equal to 2? And then it should place the attachment in the pipeline just like with the file location, then the pipeline would output an XML file.
Error:
Microsoft.XLANGs.Core.PersistenceException: Exception occurred when persisting state to the database. ---> Microsoft.BizTalk.XLANGs.BTXEngine.PersistenceItemException: A batch item failed persistence Item-ID 72fbeba9-6bfe-48e0-a0e6-ca5bbd191aa1 OperationType MAIO_CommitBatch Status -1061151998 ErrorInfo The published message could not be routed because no subscribers were found. . ---> Microsoft.BizTalk.XLANGs.BTXEngine.PublishMessageException: Failed to publish (send) a message in the batch. This is usually because there is no one expecting to receive this message. The error was The published message could not be routed because no subscribers were found. with status -1061151998
Pop3 properties:
PipelineConfigurations:
I tried stopping the orchestration and the send port and test both locations.
Testing the email location I got the same error with an email with a .csv attachment.
Testing the file location the data didn't reach the database, but the csv was processed because I could see it in the information logs.
This leads me to the conclusion that the problem is related with the mime decoding and whatever my pipeline is outputing from the email body parts.
Also after researching for a while all solutions seem to point to the necessity of having a pipeline exclusively for email since I need to say which part of the multibody part to decode. I was hoping there was a solution that would allow me to reuse the pipeline I use for the file location.
As #Dijkgraaf mentioned:
It is not failing in the pipeline. It is failing due to there being no Orchestration or Send Port that is expecting the message the Receive Port has published to message box.
That means that the receive worked, that the message has passed the pipeline, and is published in the Messagebox, but there is no matching subscription.
Check for routing failures in the BizTalk management console to find out why. It may be that the message type is not waht you expected, or that one more published properties are not set correctly.
See the suspended message and check which body part is the CSV file. Your config says its it should be the 3rd message BodyPart = 2.
I working on building a simple connection with MS CRM. I am getting this 'Unconstructed message' error only when I add the Exception handler. I referred to another link Use of unconstructed message - which tells that compiler might not be sure of the message being constructed before it is handled.
But I am creating the message in a map(Transform shape) - does that not guarantees that a message is created?
Do I need to add a message assignment shape before the transform and initialize the Request message?
If you are constructing the message inside of the scope to which you have added the exception shape, then that message will be treated as Unconstructed as the exception may occur before or while the transformation occurs.
So no, the transform shape does not guarantee that the message will be constructed at all times.
Usually in this case you are better of using in your exception block the message that is on the initiating receive of your orchestration, or if you are trying to catch an exception after the transformation add a scope that starts after the transform shape and add an exception block to that.
Is there anyway to log message contents when an exception occurs?
I looked at various logging extensions but they are just logging CorrelationId. And message contents are not available.
There is a CurrentMessge property in MessageContext, but that is not available at the time logger writes the exception.
I tried to handle PoisonMessage Event, which allows me to log the message contents.
public static void OnPoisonMessage(IBus bus, ReceivedTransportMessage receivedTransportMessage, Rebus.Bus.PoisonMessageInfo poisonMessageInfo) {
var message = new JsonMessageSerializer().Deserialize(receivedTransportMessage);
Log.Error("{#messageType} failed {#message}", message.Messages[0].GetType(), message);
}
This works great, but now I have two errors in the log one coming from my handler and the other coming from logger.
I am wondering if there is a better way to handle this requirement.
If your requirement is to simply log the message contents as JSON, I think you've found the right way to do it - at least that's the way I would have done it.
I'm curious though as to what problem you're solving by logging the message contents - you are aware of the fact that the failing message will end up in an error queue where you can inspect it?
If you're using MSMQ, you can inspect JSON-serialized messages using Rebus' Snoop-tool, which is a simple MSMQ inspector. It will also allow you to move the message back into the input queue where it failed ("return to source queue")
A good way to monitor your Rebus installation is to set up some kind of alerts when something arrives in an error queue, and then you can look at the message (which event includes the caught exceptions in a special header) and then resolve the situation from there.
Is this possible to handle DeliveryNotificationFailure exception on One-way File Type Send Port?
If yes, how to do this?
I followed the below steps but still not working.
I Kept the send shape in Scope Shape, which is handling by DeliveryFailureException Catch Block.
I did set the property on Send Port "Delivery Notification = Transmitted".
For testing:
On Admin console, I have given the wrong file path, to get message failed. And I have give the wrong Server Instance, Either ways it is not giving the results.
Yes it is possible to catch the Microsoft.XLANGs.BaseTypes.DeliveryFailureException on a One-way File Type send port.
However after catching it you have to ensure that the Orchestration either Suspends, Terminates or has logic to cope after the Catch block.
Debug Orchestration when failed
Debug Orchestration when it succeeds
I want to pull something from the server (no delete), parse the file in the pipeline component, process the file, if everything goes successfully, I want the adapter delete the file.
i am thinking to enlist the parsing into the pipeline context, this way, I am picturing if the file cannot be parsed, the file will not get to the message box, therefore it will be deemed as a failed transaction, question, will the adapter participate in this transaction? in other words, my goal is to instruct the adapter to delete the file from the server ONLY when the pipeline processed successfully (transaction is commited), the file is left untouched on the server if the pipeline failed (transaction is rolled back, no message is commited to msg box)
Is this achievable? thanks in advance
I think a little experiment is in order. BizTalk, as part of it's nature, will not delete anything until it has been peristed to the message box. That being said, persitence might happen before PipeLine execution. So, the receive adapter receives the file, perists it to the message box and deletes the file. The message might subsequently fail in the pipeline. If this is the case, then the message is a bad format and it will have to be subsequently resubmitted by the sender. If you want to keep this message, you'll have to pick it up with Failed Message Routing. You can then write it to a directory and implement a resubmit pattern. Or, you can pick up the file via Failed Message Routing and put it back on the FTP server (this is sort of a compensation step).
On the otherhand, if the pipeline fails and the message isn't deleted fromt he server... you're fine.