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ContentTransferMode in DFS Object Service

david.matheson

I'm trying to write a pure WSDL client (i.e. no productivity layer) to the DFS Object Service using JAX-WS 2.1.3. It seems like whenever I set the transfer mode to UCF or MTOM that the Object Service gives an error. If I don't set this property, everything seems to work fine (although it seems to default to UCF). Has anyone else experienced this? Code sample:

ContentTransferProfile contentTransferProfile = new ContentTransferProfile();

if (MTOM.equals(contentTransfer)) {

BindingProvider bindingProvider = (BindingProvider)objectServicePort;

SOAPBinding binding = (SOAPBinding)bindingProvider.getBinding();

binding.setMTOMEnabled(true);

// contentTransferProfile.setTransferMode(ContentTransferMode.MTOM); <-- This causes trouble if uncommented

contentTransferProfile.setGeolocation("");

} else if (UCF.equals(contentTransfer)) {

// contentTransferProfile.setTransferMode(ContentTransferMode.UCF); <-- This causes trouble if uncommented

// contentTransferProfile.setGeolocation("");

}

serviceContext.getProfiles().add(contentTransferProfile);

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Oleg

My pleasure.

You have to make sure your subsequent requests maintain the JSESSIONID, as the UCF connection is linked to the HTTP session used to create it. In other words, the subsequent requests must have the same JSESSIONID as the one returned by the connection object (ucfConnection.getJsessionId()). You can try the following:

<![CDATA[
Map<String, List> headers = new HashMap();
headers.put("Cookie", Collections.singletonList("JSESSIONID=" + ucfConnection.getJsessionId()));

((BindingProvider) servicePort).getRequestContext().put(MessageContext.HTTP_REQUEST_HEADERS, headers);
]]>

All comments

david.matheson

OK, so I have two seperate issues:

When I was using UCF, I didn't have a UCF client jar on the client machine. That's fine, I can fix this.
When I use MTOM, I am using a version of sjsxp which results in an NPE (see ).

The version of sjsxp is 1.0 or 1.0.1 (Maven will use sjsxp-1.0 if you specify JAX-WS 2.1.3 and sjsxp-1.0.1 if you specify JAX-WS 2.1.4). Is anyone else facing this latter problem? The main part of the exception is:

Caused by: java.lang.NullPointerException

at com.sun.xml.stream.writers.XMLStreamWriterImpl.getProperty(XMLStreamWriterImpl.java:440)

at com.sun.xml.ws.util.xml.XMLStreamWriterFilter.getProperty(XMLStreamWriterFilter.java:139)

at com.sun.xml.ws.streaming.XMLStreamWriterUtil.getOutputStream(XMLStreamWriterUtil.java:77)

david.matheson

OK, switched the dependency from sjsxp to woodstox to get rid of the NPE, but it still doesn't give me the MTOM encoded replies. I get UrlContent objects in the DataObject object. Should the ContentTransferProfile be set with MTOM in the OperationOptions of the method call, or in the ServiceContext when I register the context, or both?

Dave

david.matheson

Ok, so the UrlContent object problem is caused by a bug in DFS (bug #156554) that I can resolve by shutting off ACS (great solution...). I'm now having a problem with UCF transfer. I try to follow the sample code, create a UcfConnection object:

UcfConnection ucfConnection = new UcfConnection(new URL(fullUrl));

activityInfo.setSessionId(ucfConnection.getJsessionId());

activityInfo.setInitiatorSessionId(null);

activityInfo.setActivityId(ucfConnection.getUid());

activityInfo.setAutoCloseConnection(true);

...

contentTransferProfile.setTransferMode(ContentTransferMode.UCF);

contentTransferProfile.setGeolocation("Johnston");

contentTransferProfile.setActivityInfo(activityInfo);

But I get an exception client side:

com.emc.documentum.fs.services.core.SerializableException: Operation output generation failed: could not retrieve data for identity: 090f1aac800113ff.

And server side

Caused by: com.emc.documentum.fs.rt.impl.ResourceLookupException: Session is not found.

at com.emc.documentum.fs.rt.context.impl.UcfSessionManagerServer.getUcfSession(UcfSessionManagerServer.java:48)

at com.emc.documentum.fs.rt.context.impl.UcfSessionManagerServer.getUcfSession(UcfSessionManagerServer.java:1)

at com.emc.documentum.fs.rt.impl.ucf.server.ServerPackageProcessorFactory.<![CDATA[<init>]]>(ServerPackageProcessorFactory.java:33)

at com.emc.documentum.fs.rt.impl.ucf.UcfPackageProcessorFactory.getInstance(UcfPackageProcessorFactory.java:53)

at com.emc.documentum.fs.services.core.impl.result.ContentLoader.exportUCFContent(ContentLoader.java:310)

Dave

mszurap

As far as I know, UCF content transer mechanism also relies on ACS, so it tries to stream the content to the client through ACS. In Webtop it is solved, that after a failure (if ACS is not accessible) it falls back to download (getFile) the content to the app server and stream it from there. I don't know every detail of that...

Have you tried to set the ContentTransferProfile on OperationOption object when calling the specific ObjectService operation? This must override any ContentTransfeProfile set in the ServiceContext.

For me UCF and MTOM mode worked only when I set the UCF mode on the service context and UCF or MTOM mode on the ObjectService operation.

Mike

aashishpatil

David,

Thanks for keeping us all updated on your situation.

Thanks,

Aashish

Oleg

Hi David,

A few questions for me to better understand your environment:

What DFS version are you using?
How many services are involved in the operation?Do you have one consumer invoking a service or your service is invoking other services in turn, thus creating a service chain?
Does your call succeed if you comment out the following line: "contentTransferProfile.setActivityInfo(activityInfo);"

david.matheson

1. 6.5.

2. One consumer invoking a service.

3. No.

Thanks for your help Oleg! I've tried putting different jars on the classpath, but nothing seems to change the result, so I run the unit test with just ucf-connection.jar on the classpath. Should I be running with other settings?

Oleg

"ucf-connection.jar" is enough.

As far as I can understand you are writing a WSDL-only consumer. Are you registering the service context? If yes, please provide the SOAP header dump (so that it's not too verbose) of the "register" method. If not, please provide the SOAP header only (so that it's not too verbose, again) created during the actual method invocation. I would like to make sure you are properly sending the UCF connection id to the service.

Please also make sure that the "fullURL" you use to instantiate UcfConnection is the same URL you use to invoke your service (i.e. you establish a UCF connection to the right service).

david.matheson

Correct, I am writing a WSDL-only consumer. I am registering the service context. You are asking for the header dump of the ContextRegistry.register request? The header is empty. I thought that the header is not used until you get a token (which I get), which you use on subsequent calls. In what request should I be setting the UCF connection ID in the header, and how? I thought that the UCF connection ID was sent to the service via the ActivityInfo object, which is in the body.

Oleg

Yes, I meant the body of the "register" call.

The UCF id is sent as part of the ActivityInfo in ContentTransferProfile ("contentTransferProfile.setActivityInfo(activityInfo);"). I guess it would be easier to debug if you don't register the ServiceContext for now. You should be sending the ServiceContext in the SOAP header with your call in this case and it should contain the ContentTransferProfile, ActivityInfo and UCF id. It would be useful for me to see the SOAP header dump for this request and also the URL you used to build the UcfConnection.

david.matheson

My test is set up to register context. I tried briefly to marshal the context into the header directly without the ContextRegistry service, but it gives me a different error. For now, I will provide both requests.

<![CDATA[
<?xml version="1.0" encoding="UTF-8"?>









http://johnjavax01:8080/emc-dfs



]]>

This succeeds and gives me a token.

Object request:

<![CDATA[
<?xml version="1.0" encoding="UTF-8"?>



            JOHNJAVAX01/10.2.8.52-1222972723302--444799313799172511-16            











                    title
                    object_name
                    r_object_type





]]>

This fails with the error I've discussed above. The fullUrl variable is set to "http://johnjavax01:8080/emc-dfs/services/core" (it gets past the UcfConnection constructor without exception). I did notice that the first request gives me the following before the SOAP payload in the response:

Set-cookie: JSESSIONID=0A9DF717704B61423145D3251AB95D8A; Path=/emc-dfs

This is different than the session ID I pass in through the ActivityInfo. I'm not sure if this is just a red herring. Anyway, thanks for your help, Oleg!

Oleg

My pleasure.

<![CDATA[
Map<String, List> headers = new HashMap();
headers.put("Cookie", Collections.singletonList("JSESSIONID=" + ucfConnection.getJsessionId()));

((BindingProvider) servicePort).getRequestContext().put(MessageContext.HTTP_REQUEST_HEADERS, headers);
]]>

david.matheson

That did it, Oleg! Why do you have to set this in the ActivityInfo object as well as the HTTP header?

Oleg

The one in the HTTP header might be different from the one you have to use in case of a service chain, when you are opening the UCF connection to the last node in the chain directly. But it might be useful to pick up the one in the HTTP header if there is none provided in the ActivityInfo, agree. Filing a feature request.

Niranjan_Kanchugar

Hi Oleg,

I am getting a similar problem but am using .NET productivity layer.

It will be great if you can give some pointers on the same:

The following is the error trace for me

Caused by: com.emc.documentum.fs.services.core.impl.execution.proto.dfc.DfcOperationException: Create contentful action with identity: "[TestDocumentNiranjan.gif] [id =null] PROPERTIES [object_name=TestDocumentNiranjan.gif|title=test document creation|a_content_type=tiff]" failed.
... 65 more
Caused by: com.emc.documentum.fs.rt.impl.ResourceLookupException: Session is not found.
at com.emc.documentum.fs.rt.context.impl.UcfSessionManagerServer.getUcfSession(UcfSessionManagerServer.java:48)

Thanks and Regards,

Niranjan