Asynchronous Error Handling in Flex

Hi,
When going through the Error Handling in Flex from Adobe site, i got confusion in understanding Asynchronous Way of
Error Handling Mechanish in FLEX .
Here the authro Mentiones an example related to File Uploading that is for FileReference class .
I am not quite familiar with File Uploading , so i could not able to gran this concept .
Please let me know what is this Asynchrnous Way of Error Handling in FLEX , because as far is synchronous is concerned it is straight Forward Mechanism .
Please help me in understanding this Concept.

Hi,
This type of error handling means that you will listen for events on the calling instance such as a file reference object. You will use the method addEventListener() and listen for events such as IO_ERROR or whatever event the instance will dispatch on error.
See the documentation for specific error events of each class that acts as a service.
The async part means that the error if thrown will happen after the line and method executes where you called your service.
Mike

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Error handling message: flex.messaging.MessageException: No destination with id '' is registered with any service

Hi,
We are using both Remoting and HttpService calls for our business application.
We were able to communicate with the LCDS server till this point with whatever default settings provided for AMFChannel configuration in services-config.xml through a flex client. Also we have a clustered environment for this servers which works out fine till now.
Now for performance enhancement improvements, we started using Caching Mechanism for our HttpService urls (through some third party service), which will now be cached on the network instead of accessing every time from our clustered servers. But all our AMF calls through Remoting services are still the same.
So after migrating to this Caching environment, we started encountering intermittent issues where some of our AMF calls were failing with falling exception trace :
16:03:40,576 INFO [STDOUT] [Flex] [ERROR] Error handling message: flex.messaging.MessageException: No destination with id '' is registered with any service.
incomingMessage: Flex Message (flex.messaging.messages.CommandMessage)
operation = invalid.12
clientId = D7855C44-810B-64AB-C176-7C38F83DEB2C
correlationId =
destination =
messageId = 2DA6BDB8-859E-8AE1-03A4-57743DE03188
timestamp = 1247007820561
timeToLive = 0
body = {}
hdr(DSId) = D77C6BD2-3808-1512-3984-CCF397428E35
hdr(DSEndpoint) = my-amf
errorReply: Flex Message (flex.messaging.messages.ErrorMessage)
clientId = D7855C44-810B-64AB-C176-7C38F83DEB2C
correlationId = 2DA6BDB8-859E-8AE1-03A4-57743DE03188
destination =
messageId = D7855C64-3E08-466B-96F8-5BAE7D385129
timestamp = 1247007820574
timeToLive = 0
body = null
code = Server.Processing
message = No destination with id '' is registered with any service.
details = null
rootCause = null
body = null
extendedData = null
So i do not understand, most of the times the AMF calls works correctly and some times it fails with above fail trace.
Any suggestions would be appreciated.
Thanks,
FlexPirate

It might be a bit late but replying for anyone who lands on this page facing this same problem.
The solution for "No destination with id '<my dest id>' is registered with any service" problem is that you have to make sure your destination definition is added in your:
C:\ColdFusion9\wwwroot\WEB-INF\flex\messaging-config.xml
Secondly, If you are deploying it on a ColdFusion Server, then you have to make sure exact same definition is added in Server messaging-config.xml file as well.
This should solve this problem.
While we are at it, wanted to point another possible gotcha.
if your Server is using SSL protocol i.e. it has https:// rather than http://, Then within your <destination> definition block in messaging-config.xml, you have to add appropriate secure channels in <channels> section. You can find all available channel definitions in
C:\ColdFusion9\wwwroot\WEB-INF\flex\services-config.xml

Global Error Handling in Flex

Hello All,
I want to know if there is away to do Global Error Handling in Flex so that in case of any error, the pop-up (showing the exception stack trace) on the client machine should not come, instead I would be able to handle the exception in a more subtle manner.
Can I do something at the application level to prevent this ?? or should it be handled in each Flex method individually, code enclosed between try-catch blocks ?
Thanks & Regards,
Agraj

Hi,
Try referring the below links...
http://www.summa-tech.com/blog/2010/01/04/global-error-handling-in-flex/
http://livedocs.adobe.com/flex/3/html/help.html?content=11_Handling_errors_06.html
You have one sample demo with source in first link.
Hope this will be helpful.
If this post answers your question or helps, please kindly mark it as such.
Thanks,
Bhasker Chari

Global Error Handling - Possible?

Hi there!
Does anyone know if it's possible to catch unhandled errors
that occur in a flex application globally?
The Application.error event allows you to capture Error
Events that arise when communication with the outside world fails
for one reason or another, but as much as I've googled I haven't
been able to find anything for capturing coding errors such as
nullpointers etc. at runtime without wrapping every single line of
code with a try-catch.
In an ideal world I would like to catch these errors and
report them for logging on the server. Has anyone managed to
achieve this without resorting to try-catch-spamming?
The Flex-application in question is a central part of an
e-commerse system so it's rather silly that live errors remain
largely untracked...
Your thoughts would be highly appreciated!

Hi,
Try referring the below links...
http://www.summa-tech.com/blog/2010/01/04/global-error-handling-in-flex/
http://livedocs.adobe.com/flex/3/html/help.html?content=11_Handling_errors_06.html
You have one sample demo with source in first link.
Hope this will be helpful.
If this post answers your question or helps, please kindly mark it as such.
Thanks,
Bhasker Chari

IDOC to SOAP asynchronous scenario Error handling

Need an expert!!!!!!!!! advise on error handling for IDOC--PI--
SOAP scenario.This is a asynchronous scenario where PI is calling a Legacy system using SOAP adapter.My question is how i can do error handling in this scenario.If i get an alert in pi with payload variable that would be fine, do i need to use BPM and if that is tthe case what will be steps.
Appreciate your help.
Manish

Hello Manish,
My question is how i can do error handling in this scenario.
Use the standard alert framework. Search on SDN / SAP Help for details.
do i need to use BPM and if that is tthe case what will be steps.
BPM is not required to raise alerts, as this is an async call.
Regards,
Neetesh

Flex bug in global error handling

My application's global error handler (uncaught error handler) works mostly, but I found a case where it doesn't work, but should. Before I filed an official bug report I wanted to post the issue here.
Here is the issue: in a module, ErrorEvents that are not listened for and are dispatched by a Flex component are never caught in the application's uncaught error handler.
I have a sample project that demonstrates this. Here is the module in my test case:
<?xml version="1.0" encoding="utf-8"?>
<s:Module xmlns:fx="http://ns.adobe.com/mxml/2009"
             xmlns:s="library://ns.adobe.com/flex/spark"
             xmlns:mx="library://ns.adobe.com/flex/mx">
<fx:Script>
    <![CDATA[
        private function onClickSparkDispatch():void {
            dispatchEvent( new ErrorEvent( ErrorEvent.ERROR, false, false, "test" ) );   // this isn't caught in the uncaught error handler
        private function onClickNonSparkDispatch():void {
            var nonSparkDispatcher:EventDispatcher = new EventDispatcher();
            nonSparkDispatcher.dispatchEvent( new ErrorEvent( ErrorEvent.ERROR, false, false, "test" ) ); // this is caught in the uncaught error handler
    ]]>
</fx:Script>
    <s:HGroup>
        <s:Button label="Module Spark Dispatch (broken)" click="onClickSparkDispatch()" />
        <s:Button label="Module Non-Spark Dispatch" click="onClickNonSparkDispatch()" />
    </s:HGroup>
</s:Module>
Using Flex 4.6
My application statically links in the Flex SDK ("merged into code" in Flash Builder).
My applications works around these two exsiting bugs:
     https://bugs.adobe.com/jira/browse/SDK-28018
     http://blogs.adobe.com/aharui/2011/04/catching-uncaughterror-in-flex-modules.html
Is this a bug?
Thanks,
Rick

It’s been reported. Here is more information and a workaround. http://blogs.adobe.com/aharui/2011/04/catching-uncaughterror-in-flex-modules.html

Flex and Coldfusion error handling

Hello! I was wondering if someone could point me in the right direction regarding error handling in a Flex app thats using an HTTPSERVICE RPC to a Coldfusion component.
If a user is entering form data in Flex and clicks submit... the data is sent via the HTTPSERVICE send method as XML to the CFC. But what if there is a Coldfusion SQL insert statement error? Say a user enters a character in a number field (now i know the best thing to do would be to have actionscript ensure that the values entered are numbers but lets keep that aside just for this example). How could I alert the user to let them know the CFC encountered a SQL error? Or better yet... alert them that everything went "A" ok and their data was successfully submitted.
I originally thought to put CFTRY and CFCATCH around the CFC code. I could do that fine, but had trouble passing back a message string so that FLEX could use it in an Alert.Show window.
Thanks!
-BosDog

Hey Mike,
Sorry after I posted I thought "this may be a question for CF guys as well".
I definitely use and love RemoteObjects. Its great for binding to datagrids and to run SQL to return data from the server back to Flex. I've struggled with successfully passing variables from Flex to CF using RemoteObject though. Say a dataform with 5 text fields & 2 combo box dropdowns.
I think you may have forgotten to post the link to the article for me to read... i didnt see it in your last post?
Thanks!

SOA 11g- Error handling of Asynchronous composites

Hi,
We are working on Error Handling framework design for both synchronous, asynchrounous composites of SOA 11g.
Any pointers on the same will be helpfull as how to capture errors occuring during asynchronous services calls.
Thanks,
Sowmya

Thanks Naresh.
Can you help me if the below is possbile.
I have a process which takes an input and splits the inputs into multiple requests to some external system in a flow-N activity. There is an invoke activity with-in the flow N activity. And this invoke is an asynchrnous call. If at runtime we have 5 flows for flow-N, with 5 calls to external system, and out of these 4 are successful and one errors out. Can we have an error handler to just resubmit the failed request to the external system. Once we get the response from the resubmission, we want to continue with merging the output of all 5 and sending it back.
Also, let me know if there will be any issue with the call back operation due to resubmission of the invoke. This is an asynchronous invoke with call back mechanism for response.
Thank you so much.
PK

How to activate Forward Error Handling in SRM

Hello Gurus,
I got an requirement to activate Forward Error Handling in SRM. I have searched on SDN but didn't find appropriate answer on it.
Even I found some link: PI/XI: Forward Error Handling (FEH) for asynchronous proxy calls with the use of Error and Conflict Handler (ECH)
It explains me some points like activating FEH from SRM in SPRO. I have activated the same, plz check the screen shot:
It also follows some development for the same.
Here my concern is, should I follow this document? Does it applicable to all to all the scenarios?
Step 8: it assign object id and type what does it mean...
Does any one can explain me in detail..... Please provide me any document to configure the FEH in SRM.
I am trying to implement FEH in my SRM system. So that when even XML fails due to error, I should be able to reprocess/restart it with some editing to the XML.
My receiver interface for XML is PurchaseRequestERPSourcingRequest_In
I think this is standard one and no need to make any custom code for it. SAP has all ready given solution for it with some Configuration.
I have made some configurations like:
The view FEHV_ACTIVE must have the status active.
In transaction /SAPPO/LOGSYS , the logical system must be defined for the software component SRM-EBP-ESA .
As stated in in the link :
http://esworkplace.sap.com/socoview%28bD1lbiZjPTAwMSZkPW1pbg==%29/render.asp?id=2BAABCB0D30111DC2B8D000F20FCB6A9&fragID=…
Also I have made some configuration according to the Note: 1973768 - No reprocess option is available in FEH for failed in XML in SRM
Resulted, the “Process” button get activated in the XML Post Processing screen.
But can I reprocess my XML with edited value from there..?
All the configuration part of PI is already done .
I wanted to know about the FEH Part. what are the steps i am missing or where i am going wrong ?
Please let me help.
Thanks
Regards
Karan

Dear Raz,
I have gone with above mentioned note, it explains about creating Custom Proxy and configuration with PI scenario. Even the link in my previous post, explains about the custom proxies and configuration..
I think I should must be descriptive about my issue.
I am trying to implement FEH in my SRM system. So that when even XML fails due to error, I should be able to reprocess/restart it with some editing to the XML.
My receiver interface for XML is PurchaseRequestERPSourcingRequest_In
I think this is standard one and no need to make any custom code for it. SAP has all ready given solution for it with some Configuration.
I have made some configurations like:
The view FEHV_ACTIVE must have the status active.
In transaction /SAPPO/LOGSYS , the logical system must be defined for the software component SRM-EBP-ESA .
As stated in in the link :
http://esworkplace.sap.com/socoview%28bD1lbiZjPTAwMSZkPW1pbg==%29/render.asp?id=2BAABCB0D30111DC2B8D000F20FCB6A9&fragID=…
Also I have made some configuration according to the Note: 1973768 - No reprocess option is available in FEH for failed in XML in SRM
Resulted, the “Process” button get activated in the XML Post Processing screen.
But can I reprocess my XML with edited value from there..?
Can any one tell me, what are the steps I am missing here. As this is my first time to implement FEH, I am confused.
Please let me help.
Regards,
Chandan

Transaction and Error handling in Mediator 11g

Hi Experts/Gurus/All,
We have following scenario in Mediators :-
For Inbound Interfaces :-
M1-->M2-->M3
M1 calls M2 and M2 calls M3
There are 3 mediators, Mediator#1(M1),Mediator#2(M2) and Mediator#3(M3)
M1 performs a FIle Read and do a ABO-->OAGIS conversion
M2 performs routing
M3 performs a OAGIS -->ABO(JDE E1) conversion.
Now,we are in middle to decide the Fault Handling Mechanism for this case.
M1 is Asynchronous , M2 is Synchronous and M3 is also Synchronous.
Question is :
1. M1 will start a new Transaction,Do M1 will propogate the same transaction to M2 which,as being Synch,propogates the same transaction to M3 ?
2. How will the commit and Roll back will be taken care of?
3. What if M1 errors out?
4. Whatif M2 errors out?
5. What if M3 errors out?
In question 3,4 and 5:
What will happen will the Full Transaction ? If M3 erros out,would the Entire Transaction Propogated by M1 will be roll back?
Also ,How about Error handling in this case:
Do I need to create seperate fault-policy.xml and fault-binding.xml for M1,M2 and M3 ?
Another Scenario is of OUTBOUND interfaces :-
M1-->M2-->M3
M1 calls M2 and M2 calls M3
However , M1,M2 and M3 are all Asynchronous.
In this scenarios how would I handle following :-
1. If M2 Errors out,I need the entire Interface which comprises of M1-->M2-->M3 to roll back?
2. If M3 Errors out,I need the entire Interface which comprises of M1-->M2-->M3 to roll back?
3. Seperate Transactions means I have to create seperate fault-policy.xml and fault-mapping.xml to handle errors?

Hi,
You could create a package, and use the OdiSqlUnload to export the data into a flat file (csv) from snp_check_tab, then amend it. Then create an interface to load the data from the flat file to your tables, either via external tables or SQL Loader.
Question is, why are you amending data going from source to target? there surely has to be something wrong with the Architecture (especially if you are getting errors in production). If you amend data, so that it is different in source as it is in target, then when it comes to regression testing, this will never match.
The errors should go be fixed at source, and either you, or the business should have access to do so.
Cheers
Bos

Error handling in abap proxy

Hi,
In my scenario, I have written code in the execute_synchronous method of the abap proxy in ECC. I want to capture all possible errors that might occur here and for all of them i want to capture the message id and the text and send it out. what kind of possible errors/exceptions can occur and how to handle them. My proxy class simply selects data from multiple tables in ECC and returns the same.
thks

Hi,
for outbound proxies the error handling should be done within R3 itself and there is no need to send errors to XI or receiving system for that matter. You would want someone from R3 side to take a note of it.
For Inbound proxies, you will have to implement the Fault messages
Fault message types are designed for application-specific errors that occur on the inbound side and that are reported back to the sender or persisted in monitoring.
· In the synchronous case, when an application-specific error occurs on the inbound side, instead of sending a response message back to the sender, the application can send a fault message to handle the error.
· The fault message of the application for an asynchronous ABAP server proxy is persisted for monitoring. In the case asynchronous of Java server proxies, the fault message is part of a negative application acknowledgement (see Acknowledgments).
Application-specific means that the application on the inbound side triggers the error itself because, for example, the request message did not contain sufficient information.
For more information on the same.
http://help.sap.com/saphelp_nw04s/helpdata/en/dd/b7623c6369f454e10000000a114084/frameset.htm
In your case, since you said that you are selecting data from some tables, the possibility is that an entry is not found in the DB tables you will have to simply populate the fault message data and raise an expection CX_FM. It also depends on what error handling requirements from the Business .
regards,
Advait.

Error Handling of Sync/Async Bridge

Hello,
does the error handling of an sync/async bridge behave exactly as the error handling of a single sync sender?
Details are the following:
I would like to use the error handling capabilites of a sync step, so that the error handling branch is executed when a permanent pipeline error occurs (this is only possible with a sync send step). However my receiver system can only communicate asynchronously. So the question is, if the first asynchronous send step fails (e.g. error in pipeline processing) normally no error is triggered. Would this be different if the error occurs withing a sync/async bridge?

Hi Abhishek,
Thanks for the immediate reply.
The scenario is
ERP <---WS/SOAP--->PI -----WS /SOAP of 3rd party---> 3rd Party system (X).
PI <------- WS of PI
X posts the data to a backend. THe system X then picks some processed information. This system is not capable of sending the response synchronosly. It can post this data to PI once the data is available. Now PI needs to take this data and post it to the WS request from ERP.
Hope I have provided some clarity on the scenarion..
Thanks again.
Bharathwaj
Edited by: Bharathwaj on Aug 11, 2009 4:59 PM

Global error handling

I need to make sure I am handling all (my code and SDKs) errors in my Flex application. What's a way of global error management in Flex? Thanks

Here is my code:
in main appication:
creationComplete="globalErrorHandler(event)"
protected function globalErrorHandler(event:Event):void
                                        systemManager.loaderInfo.uncaughtErrorEvents.addEventListener(UncaughtErrorEvent.UNCAUGHT _ERROR, onUncaughtError);
                                        systemManager.loaderInfo.addEventListener(IOErrorEvent.IO_ERROR, onUncaughtError);
                                        systemManager.loaderInfo.addEventListener(SecurityErrorEvent.SECURITY_ERROR, onUncaughtError);
Somewhere at the run time I am generating an unhandled error. I see FP's popup error window and the same error goes into flashlog.txt, but I dont see it getting into onUncaughtError function. What am I doing wrong?
Thanks

Error handler for event based messaging framework

I've been very interested in using the event based messaging framework (described here http://forums.ni.com/t5/LabVIEW/Community-Nugget-2009-03-13-An-Event-based-messageing-framework/td-p...) for my next large application.
My main concern is the fact that it seems like typos would be very difficult to debug since you need to ignore unknown commands to make this system work.
To solve this problem I've been considering the idea of having a single message error handler VI which will store all valid commands and check all sent commands to see if they are valid. Each VI would send out a register message on startup with their name and all messages they can send and receive. The message error handler would store these and then check all future messages to be sure it is a valid message, throwing an error if it is not.
My basic problem is this: for this to work the message error handler VI would have to be started before any messages are sent so that it can capture all the register events. If this is a VI that will be continuously running the entire application how can I ensure it starts first since I cannot wait for it to complete? (I.e. the usual method of running an error out wire or using a sequence structure will not work since everything will then wait for it to complete which will not happen until the program is ready to shut down)
I'm assuming the answer might be to use an asynchronous call but I'm not very familiar with this method.
Any help is appreciated. Thanks.

Could you just use the error handler as a subVI inside a case structure that is only called when you have new message to be checked? I'm not sure I understood the exact functionality you are looking for, so sorry if this does not apply.
Zach P.
Product Support Engineer | LabVIEW R&D | National Instruments

Client ABAP proxy error handling. Please help!

Hi Experts,
   I have following scenario:
   SAP ECC (ABAP Client Proxy) -> PI(XI)-->(SOAP) Third party web service System
   This is Asynchronous.
   What will happen when ABAP client Proxy in ECC sends data to PI but PI is down?
   Will the message be queued in ECC? Can the queued message be processed automatically when PI is UP later?
   Please help.
Thanks & Regards
Gopal

Hello Gopal,
Correct, it should be an automatic entry into the queue!
refer below for a detailed understanding!
/people/arulraja.ma/blog/2006/08/18/xi-reliable-messaging-150-eoio-in-abap-proxies     XI: Reliable Messaging u2013 EOIO in ABAP Proxies
/people/krishna.moorthyp/blog/2005/12/23/monitoring-for-processed-xml-messages-in-abap-proxy     Monitoring for Processed XML messages in ABAP Proxy
Weblog to send Response from RFC to File in Asyn Mode Using Proxy [original link is broken]     Weblog to send Response from RFC to File in Asyn Mode Using Proxy
/people/michal.krawczyk2/blog/2009/06/20/pixi-abap-proxies-say-goodbye-to-executeasynchronous-method     PI/XI: ABAP Proxies say goodbye to Execute_Asynchronous method
/people/krishnakumar.ramamoorthy3/blog/2008/11/02/error-handling-framework-for-abap-proxies--part-1     Error handling framework for ABAP proxies - Part 1
/people/krishnakumar.ramamoorthy3/blog/2008/12/19/error-handling-framework-for-abap-proxies--part-2     Error handling framework for ABAP proxies - Part 2
Regards,
Jilan

Asynchronous Error Handling in Flex

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