[DPP v4.0.0] Transfer issue parsing EDR in edc 0.7.3 in migration to /v3 api

[matbmoser]

Current Behavior

Getting all the time digital twin not found because transfer could not be started:

I could change the transfer status from "transfer.process.started" which was giving a "REQUESTED" status in the EDC:

And not callback endpoint was called.

Once I have changed to "transfer.process" I finally got a way forward and received and error:

Problems found:

• Chart in v4.0.0 was incorrectly created, missing correct policy configuration:

digital-product-pass/charts/digital-product-pass/values.yaml

Line 209 in b9122b3

- action: "USE"

Should be "odrl:use"

• Process event shall be changed from transfer.process.started to transfer.process:

digital-product-pass/dpp-backend/digitalproductpass/src/main/java/org/eclipse/tractusx/digitalproductpass/core/services/DataTransferService.java

Line 1428 in b9122b3

List<CallbackAddress> callbackAddresses = List.of(CallbackAddress.builder().transactional(false).uri(receiverEndpoint).events(List.of("transfer.process.started")).build());

It should also be added to the chart configuration...

• AssetId needs to be removed from the transfer process request model, its not needed anymore:
  

  digital-product-pass/dpp-backend/digitalproductpass/src/main/java/org/eclipse/tractusx/digitalproductpass/core/models/negotiation/request/TransferRequest.java

  Lines 47 to 48 in b9122b3

  	@JsonProperty("assetId")
  	String assetId;

• EDR must be adapted:
  https://github.com/eclipse-tractusx/digital-product-pass/blob/v4.0.0/dpp-backend/digitalproductpass/src/main/java/org/eclipse/tractusx/digitalproductpass/core/models/edc/EndpointDataReference.java

Impact and actions

• v4.0.1 Hotfix release is required

[matbmoser]

I have checked it and maybe it looks like the "transfer.process.started" still needs to be in place in order to receive the callback

[matbmoser]

Ok i found that the problem is in the consortia env.
I also found a critical error:

[matbmoser]

This is still a old logic implemented to parse the BPN from providers

[matbmoser]

Ok i have found the problem and solve it. Now there is a new function called buildDspEndpoint that checks for trailling slashes and also concats the dsp endpoint

[matbmoser]

Its solved!