ACS URL Documentum 16.4 using Rest service

Srihari S · 2021-05-04T10:33:55+00:00

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We need to get the ACS URL for a document to view it in client application. But the request will not have objectId(r_object_id) which we will fetch it in the Documentum DB(DQL) based on the parameter value(mapping is set for it in Documentum DB during object creation in Documentum) in the request and get the ACS URL and send it back in response to open the document.

Need to implement this in change using Rest Service by overriding the getContentURL method.

Please correct me if I am wrong with the method name. I searched in the materials but haven't found any help related to this.

I just need how to implement it(class and the method name if the above is wrong). I can write the code.

We deploy this as a war file in Tomcat server..

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Comments

DCTM_Guru

I'm not sure if you can override the default ACS url. Is there any reason why you cant modify your app to call the REST services directly?

Srihari S

Hi DCTM_Guru,

User will click on the document link to view it in the client application(Pega Application) which has only UUID, and pass it in the request.

Using this, we need to get the r_object_id for the document and get the ACS URL.

Is there any reason why you cant modify your app to call the REST services directly?---> From Pega end, there are multiple calls to Documentum Rest to get the ACS URL and there might be some performance issue.

So, Implementing at Documentum side. Are you saying it is not possible to implement? If yes, could you tell me the method name and how to implement it...

Thanks..

DCTM_Guru

AFAIK, ACS is not customizable its part of Content Server. BTW - do you have sample of what the ACS url looks like (I dont recall where object ID comes into play)?

Srihari S

Hi DCTM_Guru,

Thanks for your response..Generally If we hit the below URL, then we get the ACS URL:

http://<host>:<port>/dctm-rest/repositories/{repositoryName}/objects/{r_object_id}/contents/content

ACS URL:

http://<<host>>:9080/ACS/servlet/ACS?command=read&version=2.3&docbaseid=50fa87&objectid=0950fa878002fddb&cacheid=dFAEAgA%3D%3Dm5UAgA%3D%3D&format=pdf&pagenum=0&signature=TyXsrNCGy6TTDbY3Megq5JD3BsCP9SNbdJcN8F6JqqFbSKZlc2FJFlnRdO6R%2F2OwQMYtXcrDc6NtLlW152KXOFjsNDKZmhn%2BVKiaPfRzjk%2BGS8ULXZNVsxk1NDzMRSuyu72SKGJpO6KgyVwebGwtHjgsWcfc2H9Xwucv0DBF2wg%3D&servername=n074cassvr5f560c8738a2ACS1&mode=3&timestamp=1617704987&length=3028&mime_type=application%2Fpdf&parallel_streaming=true&encryption_mode=require&expire_delta=360

Actually, we are not customizing ACS URL, it remains the same. If we pass the r_object_id directly, then we can get the ACS URL as response.

But, when user clicks on the document in client application, there is no r_object_id available, they only have an identifier, and they pass it. We need to get the r_object_id based on the identifier from Documentum DB(mapping is available in DB) and hit the url with r_object_id and send the ACS URL back as response to View the document.

To acheive this, I want to customize the getContentURL method(if not wrong) and write the logic and send the ACS URL back.

Thanks..

Hicham Bahi

No need to override. Implement your own resource which will accept your UUID, retrieve the document, get ACS URL and return it. There are examples in the SDK for how to extend Documentum REST.

Srihari S

Hi Bacham3,

As you mentioned I have written the code referring to some examples. But I am facing Issue with it.

When I hit the below URL in PostMan, the request is not going to the controller class.

http://localhost:8080/repositories/CDDM/

I have written code in model class(guess not required in my case), controller and persistence(for Documentum DB connectivity tasks)

model, persistence, resource, web

Below is the controller class code. I have compiled it and created a war file and deployed it in application server. There are no errors in the tomcat console after the war extraction.

//Controller Name

@Controller("ics-viewattachment-controller")

//URL definition for the REST service

@RequestMapping("/repositories/CDDM")

public class ViewAttachmentController extends AbstractController {

@RequestMapping(method = RequestMethod.GET, produces = {

SupportedMediaTypes.APPLICATION_VND_DCTM_JSON_STRING,

MediaType.APPLICATION_ATOM_XML_VALUE,

MediaType.APPLICATION_JSON_VALUE,

MediaType.APPLICATION_XML_VALUE

})

@ResponseBody

//@ResponseStatus(HttpStatus.OK)

public static String getACSUrl(@PathVariable("repositoryName") final String repositoryName,

@PathVariable("param.uuid") final String UUID) throws Exception {

GetDocumentId getDocumentId = new GetDocumentId();

String documentId = getDocumentId.getObjectId(UUID);

System.out.println("repositoryName::" + repositoryName);

System.out.println("objectId::" + documentId);

return "This is test response";

}

Could you please tell me if I am missing something here. When I hit the URL, if the request comes to controller class, then I can proceed from there. Need help urgently on this.

In the war file, I could see the model, resource and persistence project specific jar file.

Hicham Bahi

Your request mapping is wrong. You cannot map it to http://localhost:8080/repositories/CDDM/ since this is needed by Documentum REST: CDDM is the repository name. You need to map it further down.

There is an example in the SDK that defines a new resource for managing alias sets. I suggest you try to deploy it and then try to access it. Then, add your new resource on the same model (but you are correct in that you don't need to implement the model and persistence classes).