PI 7.31 - How to set an Async/Sync with multi mapping?

[RafaelVieira]

Hi experts,

I need to setup a scenario File -> REST -> Multiple Files.

Initially I though I could use simple async/sync bridge:

File (async) --> XI --> REST (sync request)

REST (sync response) --> XI --> 0..N Files (async)

However I'm not sure how I could design it with 2 operation mappings, as the 2nd Op Mapping would have to be designed for multi mapping.

Anyone would please share how I could design this scenario if it's possible with async/sync or would it be done only by using BPM?

Tks!

[former_member190293 · Accepted solution]

Hi Rafael!

You can do it right as you said. As far as you change response message type from sync to async and replace interface to async with adapter modules you can use multimapping in second OM as it acts in async mode.

Regards, Evgeniy.

[RafaelVieira · Accepted solution]

Hi Evgeniy,

Can you please elaborate a bit more how would the ESR objects be?

Thanks!!

[former_member190293 · Accepted solution]

Hi Rafael!

First ICo:

Async interface for sender (File) with message type.

Sync receiver interface with request/response/fault message types (Rest).

Message mapping (if needed) to transform sender message to Rest request.

Operation mapping with request mapping only assigned to it (as response mapping will be processed by second ICo).

Second ICo:

Async interface for Rest response (Sender) with response message type.

Async receiver interface for your multiple files.

Message and operation mappings for Rest response transformation to multimessage structure (0..unbounded).

In receiver communication channel use adapter modules to build async-sync bridge. Take a look at screenshot above for example.

Refer to this blog to learn more:

http://scn.sap.com/community/pi-and-soa-middleware/blog/2014/01/28/generic-pi-async-sync-bridge-conf...

Regards, Evgeniy.

[RafaelVieira · Accepted solution]

Tks Evgenily!

Very clear now.

Just one question: still in 1st ICO, how can I map an Async interface to a Sync one? It would throw an error in operation mapping.

[former_member190293 · Accepted solution]

Hi Rafael!

No, it won't . It will just warn you about that. And RequestResponseBean/ResponseOneWayBean in module configuration will do the rest.

Regards, Evgeniy.

[RafaelVieira · Accepted solution]

It worked as you described.

Tks Evgeniy!

[markangelo_dihiansan]

Hi Rafael,

You can use a UDF to do the REST call. However, take note that if anything fails in the pipeline, the message will be persisted and will be executed 3 times (you don't want that to happen).

BPM would be the clean solution though.

Regards,

Mark