Custom adaptor for Tuxedo call in JAVA

Question

I have a typical requirement something like that … I have a oracle tuxedo server with lots of services , now we need to add one microservice layer on that which can talk(In and out) with the tuxedo server , something like a adaptor with can accept call form tuxedo server and can call also to some tuxedo services in REST.

Proposed Design diagram is something like this…

But the problem is that tuxedo server (version 12) , can accept call as REST , but from tuxedo server we did not found any way call our microservices in REST. As per my study tuxedo server can call other services only in its legacy way , with TPC/IP written in C++.

If any one can help me out to implement this design will be highly appreciated …

Solution points

1) Write a adaptor in java , which can accept a tuxedo call from a tuxedo server and can call a tuxedo serve. (call a tuxedo server for services that part is resolved already, sample code in BEA doc , but the other part , accepting a service call from tuxedo in legacy way , we did not found any, is it possible to write something in java for that ? any doc or sample? )

                                **or**

2) In any way from tuxedo server if can call in REST to our Microservices, replacing the proposed adapter direct call from tuxedo server to different micro-services.(may be written in java or c++ and deployed in existing tuxedo server)

Please let me know if any one suggest any other good approach to achieve this.

Answer 1

I think Oracle SALT is what you are looking for: it can both expose Tuxedo services as Web services and call Web services from Tuxedo. See https://docs.oracle.com/cd/E35855_01/salt/docs12c/overview/over.html but it's also an additional product you have to buy from Oracle.

It's also possible to build such adaptor yourself but it will be Tuxedo code (not some Java code that taps into Tuxedo's internals). A Tuxedo server that calls REST services is pretty easy - use something like libcurl in C++ and just transform Tuxedo data types to JSON or XML. It's also possible to write Tuxedo servers in Python (tuxmodule) and Java. To call a Tuxedo service over HTTP from other microservices you can

• use a web server and create endpoints that use https://en.wikipedia.org/wiki/Common_Gateway_Interface or WSGI and tuxmodule to call Tuxedo services. Your code acts as a basic Tuxedo client.
• implement a multi-threaded web server in a Tuxedo server.