HowTo get the callback from an asynchronous BPEL process to an ESB?

Hi,
I have deployed an asynchronous BPEL-process which is called from an ESB. So far no problems. But I want to receive the callboack fromt this BPEL process on the ESB, too.
How is this possible?
Note: I have created the BPEL-Process before I created the ESB. So I cannot add the ESB as a partner link in the BPEL Process. Or is this the only way?
Message was edited by:
user636134

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How to get the callback from an asynchronous BPEL?

Hi, I have deployed an asynchronous BPEL on Oracle Application Server as a Web Service. The BPEL is named CreditRatingBPEL. The input is a social security number (Ssn) and the output is a credit rating.
Now I have some troubles in consuming BPEL with Axis1.4. I have generated the client stubs by WSDL2Java tools. I have initiated the asynchronous BPEL successfully. Now I want to get the callback from the BPEL, but I don't know how to do it.Here are some Java snippets:
public static void main(String[] args) throws ServiceException, RemoteException {
// TODO Auto-generated method stub
CreditRatingBPEL_Service service = new CreditRatingBPEL_ServiceLocator();
CreditRatingBPEL_PortType requestPortType = service.getCreditRatingBPELPort();
CreditRatingBPELProcessRequest request = new CreditRatingBPELProcessRequest();
request.setSsn("31060931");
// asynchronous invoke
requestPortType.initiate(request);
// how can I get the callback from the web service?
I will be very appreciated if you can give me some suggestions. Best regards!

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How to get response from an asynchronous BPEL process in Java

I'm experimenting with BPEL and doesn't seem to be able to get response from an asynchronous BPEL process. Here's the deal:
I have a BPEL process that takes a string as input, and gives another string as output. This is a asyncronous process.
I want to initiate this BPEL process as a web service so I generate a Webservice Proxy in JDeveloper 10g (10.1.3.0.4). The function to call the process is now called "initiate" and takes three arguments: the input string, a "org.xmlsoap.schemas.ws._2003._03.addressing.EndpointReferenceType replyTo" and a
"org.xmlsoap.schemas.ws._2003._03.addressing.AttributedURI messageID".
HTTP-Analyzer shows that invoking the BPEL process with initiate("somestring", null, null) results in sending a SOAP message to the BPEL process, which returns a "202 Accepted". How do I get the response from the process? My intuition tells me that I have to use that second argument, that EnpointReferenceType thing. How do I use that?
Another question: If a asynchronous BPEL process does not exists (so the endpoint does not exist) the Java proxy does not throw an error when runned. It does not even sends a message. It exits with status 0! (This happens for example when deploying a new version of a process and when the "old" version is undeployed). Calling a non-existing synchronous BPEL process, the Java proxy DOES throw an error.

Clemens,
That all sounds logical. But somehow it is still a mystery for me ... Somehow I don't see what should be done.
To call the async BPEL process I have the following procedure:
initiate(String input, org.xmlsoap.schemas.ws._2003._03.addressing.EndpointReferenceType replyTo, org.xmlsoap.schemas.ws._2003._03.addressing.AttributedURI messageID)
The first argument is the input for my BPEL process. The second is the address to a webservice that should handle the callback, right? The third is a messageID (makes sense, but why of the type AttributedURI?).
Here lies my problem. It is not clear to me how these EndpointReferenceType & AttributedURI work. I can't find anything on the net about it. The AXIS examples as where mentioned earlier use other types (namely the "org.xmlsoap.schemas.ws.addressing.MessageID" and "org.xmlsoap.schemas.ws.addressing.ReplyTo") which are completely different.
What I did so far:
- I created an webservice proxy that listens on the onResult endpoint of the BPEL process.
- I created an webservice proxy that calls the BPEL process through the initiate procedure, but it is not completely clear to me how to construct the EndPointreferenceType replyTo, and the MessageID. I did something like this:
EndpointReferenceType replyTo = new EndpointReferenceType();
// callback service running on local machine
// This URI class is the java.net's version
URI replyToURI = new URI("http://vaccinatie:8988/syncro-callback-context-root/stringconcatCallbackBindingPort");
// This AttributedURI is the org.xmlsoap.schemas.ws._2003._03.addressing's version
AttributedURI address = new AttributedURI();
// the only public methos that made sense to me:
address.set_value(replyToURI);
replyTo.setAddress(address);
// call the BPEL process
myPort.initiate("test123", replyTo, address);
But the above doesn't work (largely because I don't know what I'm doing here prob.:-) ) It does send the "test123" message, and the BPEL process does process it, but I don't seem to get the callback right.
I hope this makes my problems somewhat clearer. I hope someone can help me, because I'm just a beginner in this whole "web service area" and seems to do something terribly wrong here, because it should be very simple. Thx.

Throwing a fault from an asynchronous bpel process

Hi,
can anyone please let me know how i can throw a fault to the calling client from an asynchronous bpel process?
(synchronous bpel uses the fault of the reply activity to do the same - i want a similar thing in a callback-invoke of an asynchronous process or any other way to do it if at all)
please let me know if it is possible becoz it was a requirement put forward by a customer and i just want to develop a proof of concept to the same.
regards,
pavan.

Hi,
I'm using BPEL process manager for calling a asynchronous web service,I can invoke the service from BPEL and the service is invoked correctly,but when I view the business process flow in BPEL Console my process is stopped at receive state and doesn't pass it.
Could anybody tell me if any thing should be set to receive a callback from an asynchronous web service to BPEL process?
Is it true that BPEL process receives a callback automatically (using a callback operation which I defined in my web service WSDL) on the same port type that normally receives the requested information, with an invoke activity?
So what could be wrong with my process or invoked web service that the BPEL process doesn't get any reply from my web service and remains in receive activity?
Thnx in advance,
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DBAdapter polling for new or changed records not issuing callback within an asynchronous BPEL process?

Hi,
I have a requirement to poll a database table withing an asynchronous process. The reason I want to use a receive within an asynchronous BPEL is because the process needs to be notified many times thru polling. So might need many receive activities.
I have developed a process as described below :-
1. Created an asynchronous process.
2. Created a Database adapter for polling a table. Logical delete strategy is being used.
3. Have put a receive activity from the DB Adapter created.
4. Created a correlation set consisting of a single property(String)
5. Created a property alias to refer to
a. the input string of the asynchronous process. (unique for this process)
b. the input from the database adapter (unique for this process)
I initiate this process from the console. Then I inserted a record the table with proper inputs.
But the BPEL waits indefinitely at the receive activity.
When I try to poll the table from an empty BPEL process, it works perfectly fine.
Regards
Kabir

Hi Kabir,
Please refer the following sample for your usecase.
Though Please be aware that one instance of BPEL process will correlate with only one message if you have one receive activity. Not all the messages tht DBAdapter polls.
bpel-305-InboundCorrelationShows how to perform message correlation within BPEL
Also Refer the following in Developer guide.
http://docs.oracle.com/cd/E28280_01/dev.1111/e10224/bp_correlate.htm#CHDFHAAE
If you want to keep polling and receiving the messages in the same BPEL process you might have to put the receive activity in a while loop construct. But as a design this is not a good design.
Can you elaborate your requirement to understand better and suggest better solution.

Implement callback for an asynchronous BPEL process through Java

Hi ,
I am trying to implement a callback functionality for an asynchronous BPEL process through java.
I found the code in the samples folder of SOA suite installation folder .
<SOA_HOME>\bpel\samples\tutorials\102.InvokingProcesses\rmi\com\otn\samples\async.
There is an AsyncInstanceWatchdog object which registers a callback object(in this case an object of AsyncCallbackImpl class) for a specific CONVERSATION_ID.
String convId = GUIDGenerator.generateGUID();
nm.setProperty(NormalizedMessage.CONVERSATION_ID, convId);
deliveryService.post(proc_name, "initiate", nm);
// register the callback
watchdog.registerAsyncCallback(convId, testAsyncHandler,
locator.getDomainAuth());
// start it
watchdog.start();
There is no problem till the last line. But once the BPEL process returns the control( does a callback), it throws the following error.
May 25, 2010 3:36:06 PM oracle.j2ee.rmi.RMIMessages EXCEPTION_ORIGINATES_FROM_THE_REMOTE_SERVER
WARNING: Exception returned by remote server: {0}
ORABPEL-02118
Variant not found.
The variant "output" has not been declared in the current scope. All variants must be declared in the scope before being accessed.
Please check that the variant "output" is properly declared; otherwise there may be a misspelling in the name of the variant.
at com.collaxa.cube.engine.core.Scope.getVariantRV(Scope.java:535)
at com.collaxa.cube.engine.CubeEngine.getFieldValue(CubeEngine.java:2668)
For your reference the variable output is declared in the definition of AsyncCallbackImpl (which implements the IAsyncInstanceCallback interface).
There are 2 methods defined in the AsyncCallbackImpl class.
public void onResult(Map pResultMessage) {
System.out.println("called back! ");
Iterator iTest = pResultMessage.keySet().iterator();
while (iTest.hasNext()) {
String key = (String)iTest.next();
System.out.println(XMLHelper.elementToString((Element)pResultMessage.get(key)));
public String getVariableName() {
return "output";
The variable name is same given in the sample code. And the BPEL process returns variable named output. So the name should not be a problem.
Is it because of the scope of the variable.. If so, how do I change it.
Any help would be appreciated.
Edited by: saptarishi on May 25, 2010 4:24 PM
Edited by: saptarishi on May 26, 2010 4:45 PM

Solved it by some googling .... :)
Here is the link:-
[http://abhishek-soablog.blogspot.com/2008/09/orabpel-02118.html]
or
[http://beautifulwaste.blogspot.com/2008/04/calling-asynchronous-bpel-process.html]
Both gives the same solution..
In pre 10.1.3.3 release the default behaviour were to keep global variable information along with the instance information for completed BPEL processes.
In 10.1.3.3 or later, this behaviour changed for performance reasons so that the default behaviour is now, not to keep any global variables for a BPEL process once the BPEL process has completed.
You can configure this behaviour on a process level basis by using the parameter keepGlobalVariables in the bpel.xml file for the specific process:
<BPELSuitcase>
<BPELProcess src=".........." id="...........">
<configurations>
<property name="keepGlobalVariables">true</property>
</configurations>
</BPELProcess>
</BPELSuitcase>
Thanks
saptarishi

Any java API to get the metadata for a deployed bpel process in soa/bpm11g?

Hi,
Just wonder if this is possible, that there is some existing java api to retrieve the metadata (containing activities, isSynchrous, version information etc) for a deployed bpel process? If not, is there any other way to achieve this goal ( or example query database table directly)?
I can only find this link for soa11g java api. I am able to invoke the bpel process using this API(direct binding) from java client.
http://download.oracle.com/docs/cd/E14571_01/apirefs.1111/e10659/index.html?overview-tree.html
Any help will be greatly appreciated.
Thanks,
Bin

What I find so far:
1. can get some process property values from ComponentInstance class, see its api.
http://download.oracle.com/docs/cd/E14571_01/apirefs.1111/e10659/oracle/soa/management/facade/ComponentInstance.html
Please refer http://blogs.oracle.com/soabpm/2009/07/soa_suite_11g_api_tricks_part.html of how to get the component instance (contain the bpel process) from a composite object
2. in dev_soainfra database schema, the CUBE_INSTANCE table contains most of soa bpel components information. The BPM_CUBE_PROCESS table seems to contain only the process defined in a bpm application. This sounds a little confused, if we want to develop a bpel application, should it be put in soa or bpm application and what is the difference?
Please feel free to correct any mistakes here.

Retrieving Status/Results from Asynchronous BPEL Processes

Hi,
I'm trying to poll the results of an asynchronous BPEL process with Java RMI. I managed to get the state of my instance, but i could not get the results of the process.
When I use the method getResult I only get an empty Object[]. (see my attached code)
I'm working with the tutorial 101.HelloWorld process.
How can I acess the results of this process by using RMI?
Thank youf for replies.
Marc
Properties props = new java.util.Properties();
java.net.URL url = ClassLoader.getSystemResource("context.properties");
props.load(url.openStream());
Locator locator = new Locator("default", "bpel", props);
IInstanceHandle handle = locator.lookupInstance("myInstance");
if (handle.getState() == IInstanceConstants.STATE_CLOSED_COMPLETED)
System.err.println(handle.getResult());
}

Hi,
I am having exactly the same problem.
Was this bug ever solved ?
Thanks,
Claudio.

Database polling adapter within an asynchronous BPEL process

Hi,
I have a requirement to poll a database table withing an asynchronous process. The reason I want to use a receive within an asynchronous BPEL is because the process needs to be notified many times thru polling. So might need many receive activities.
I have developed a process as described below :-
1. Created an asynchronous process.
2. Created a Database adapter for polling a table. Logical delete strategy is being used.
3. Have put a receive activity from the DB Adapter created.
4. Created a correlation set consisting of a single property(String)
5. Created a property alias to refer to
a. the input string of the asynchronous process. (unique for this process)
b. the input from the database adapter (unique for this process)
I initiate this process from the console. Then I inserted a record the table with proper inputs.
But the BPEL waits indefinitely at the receive activity.
When I try to poll the table from an empty BPEL process, it works perfectly fine.
Could someone please help me here.
Thanks in advance
Saptarishi

Hi,
Could someone pls answer this query.
Regards,
Saptarishi

Unable to get callback from Asynchronous BPEL process to work (AXIS Client)

Hello,
I am calling an Asynchronous BPEL process from an AXIS client, and I am unable to get the callback functionality to work. The AXIS client code has been generated from WSDL2Java using the BPEL process' WSDL file.
I CAN insert an invoke node in the BPEL process and invoke my Callback web service using that, but obviously that means the BPEL process is limited to only responding to one pre-determined client, which won't work.
My questions:
- How does the BPEL process know what endpoint to use to make the callback?
- Do I need to modify the generated code to create a SOAP Envelope and invoke the process with the envelope, intead of the invokeOneWay call?
- If I do need to create a SOAP Envelope with a replyto element, what is the structure of a typical BPEL envelope? Is there an example somewhere?
I have looked at the examples in the interop directory, specifically the AXIS calling Async BPEL, but I would like to try to keep the client code as independent as possible (I don't really want to have a dependency on the OTN library).
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Thank you.
-Ryan

Please have a look at the Binding in the WSDL. Axis must provide the ReplyTo and
MessageId information there. As far as I see, this must be done by an Axis-Handler,
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I was able to generate the JavaClasses by using the "WSDL2Java -a" option, but
I still do not see how to use them in a handler and how to register the handler.
Maybe someone can give me a hint.

Asynchronous BPEL Process called from an empty BPEL process getting lost.

Hi
I have an empty BPEL process calling an asynchronous BPEL process. The empty process is triggered by a read file activity. It finishes successfully and even calls the asynchronous process. There is no error thrown but the called asynchronous process does not show up in the dashboard.
When this asynchronous process is manually run from the console I get the page stating 'Cannot find the specified instance'.
I am using Jdev 10.1.3.2 and SOA Suit 10.1.3.1.
Any suggestion as to why this is happening and what is the remedy?
Buddhadev.

Check your log as soon as you find that the parent process has found its way into the console. More information on logging can be found here - http://download-uk.oracle.com/docs/cd/B31017_01/integrate.1013/b28982/logging.htm
Not quite sure why its so, but since 10.1.3, I've observed that the console simply doesn't show errored processes at times. So, checking the log can be a starting point in diagnosing the real issue.
HTH
Antony

How to call a Asynchronous bpel process from a PLSQL procedure?

How to call a Asynchronous bpel process from a PLSQL procedure?

Hi,
You could do something smart and technical very spiffy with soap-stacks in the database and/or dbms_ws/dbms_http. But I allways find AQ with AQ-adapter the simplest. Let Pl/sql enqueue a message on an aq-queue and subscribe an aq-adapter process on it. That can call your async-bpel process. If you want to get answer back in pl/sql, let the aq-adapter process enqueue a response message on another queue or on the same queue with another consumer name. Give it a correlation-id that you provided in the payload of your request message. Your pl/sql process can then do a dequeue on that correlation-id. It will sit and wait until a message with that correlation id is enqueued on the queue.
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Unable to get the response from dynamic partnerlink

Hi
I used dynamic partnerlink, in this i am able to invoke the services dynamcially but i am unable to get the response from the services which i had invoked dynamically. In my dynamic partnerlink wsdl i had included callback binding and call back service in the wsdl you can see them below
<binding name="LoanServiceCallbackBinding" type="tns:LoanServiceCallback">
<soap:binding style="document" transport="http://schemas.xmlsoap.org/soap/http"/>
<operation name="onResult">
<soap:operation soapAction="onResult" style="document"/>
<input>
<soap:header message="tns:RelatesToHeader" part="RelatesTo" use="literal" required="false"/>
<soap:body use="literal"/>
</input>
</operation>
</binding>
<service name="LoanServiceCallbackService">
<port name="LoanServiceCallbackPort" binding="tns:LoanServiceCallbackBinding">
<soap:address location="http://openuri.org"/>
</port>
</service>
please help me on this
thanks
Srikanth

Hi, thanks for the input
Actually My partnerLink had two messageTypes one for Input message request and the other for the Output message request and for the input message i had used the operation as initiate also for the output messsage type operation as result.For both of them binding is defined.
With these am passing the values from myBPELl to the service which am nvoking dynamically but unable to capture the response the variables are local to myBPEL.

Getting the payload from a faulted process

I'm using the fault framework and I need to know how to get the payload from the faulted process. I have a custom java logger that uses the locator API, but I'm finding out that this will only work if the process has been persisted to the dehydration store. Is there another way to get the payload? I know I can use checkpoint/wait within the bpel process to force dehydration but I'm looking for another alternative

The problem is the cube instance table has not been populated yet for the instance. So from a faulted instance that has NOT been dehydrated to cube instance, how will I get to the invoke_message table, or how will I get the payload from the faulted instance.
I'm able to get the document fine when the cube_instance table is populated, my problem is sometimes the instance has not been dehydrated and cube_instance is not available. So from a faulted instance how will I get to the invoke_message table without using the cube_instance table

Invoking asynchronous BPEL process from java ui

Hi,
I am invoking an asynchronous BPEL process from java ui.
I read somewhere that i can obtain an instance handler uing the lookupInstance() method of class Locator using the conversation id provided by the class NormalizedMessage.
My code looks like this
// Connect to Oracle BPEL server
Locator locator = new Locator("default","bpel");
IDeliveryService deliveryService = (IDeliveryService)locator.lookupService(IDeliveryService.SERVICE_NAME );
// Construct a normalized message and send to Oracle BPEL Process Manager
NormalizedMessage nm = new NormalizedMessage();
nm.addPart("payload", xml);
// Initiate the BPEL process
deliveryService.post("MyLoanFlow", "initiate", nm);
//Obtain the instance handler
IInstanceHandle handle = locator.lookupInstance(NormalizedMessage.CONVERSATION_ID);
But this is giving the error - can not find any instance with conversation id 'conversationId'.
Also, if i try to obtain a list of instance handles associated with a process , it does not contain the most recently created instance
IBPELProcessHandle ph = locator.lookupProcess("MyLoanFlow");
IInstanceHandle[] iHandler = ph.listInstances();
out.println(iHandler.length + "<br>");
if i invoke the process for the first time the output is 0.
can you please help me. it is urgent.

Hi Sudipto,
Regarding your second question,
deliveryService.post("MyLoanFlow", "initiate", nm);
IBPELProcessHandle ph = locator.lookupProcess("MyLoanFlow");
IInstanceHandle[] iHandler = ph.listInstances();
out.println(iHandler.length + "<br>");
---- returns 0 ---
This is because MyLoanFlow is an asynchronous process in your case. So the control is returned to your java block immediately after the request for a new instance is posted. And your second line of code(querying for the list of instances) is executed even before the instance is created on the server side. You can verify this in two ways:
1. try creating an instance of a synchronous process using IDeliveryService.request - this will always result in the increment since the current thread is blocked till the new instance is created.
2. for your case, you can try
Thread.currentThread().sleep(500); - just allow the server some time for completing the instance before you query it for the list of instances..
and wrt question 1,
//Obtain the instance handler
IInstanceHandle handle = locator.lookupInstance(NormalizedMessage.CONVERSATION_ID);
But this is giving the error - can not find any instance with conversation id 'conversationId'.
For setting the conversationId, you could do so by including the following inside your .bpel file
<bpelx:exec name="test-setConversationId" language="java" version="1.4">
<![CDATA[
setConversationId("conversationId");
]]>
</bpelx:exec>
The code:
IInstanceHandle ins = locator.lookupInstanceByConversationId(NormalizedMessage.CONVERSATION_ID);
should fetch you the required instance in this case.
HTH,
Anuj

HowTo get the callback from an asynchronous BPEL process to an ESB?

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