Book Image

Modernizing Oracle Tuxedo Applications with Python

By : Aivars Kalvans
Book Image

Modernizing Oracle Tuxedo Applications with Python

By: Aivars Kalvans

Overview of this book

Despite being developed in the 1980s, Oracle Tuxedo still runs a significant part of critical infrastructure and is not going away any time soon. Modernizing Oracle Tuxedo Applications with Python will help you get to grips with the most important Tuxedo concepts by writing Python code. The book starts with an introduction to Oracle Tuxedo and guides you in installing its latest version and Python bindings for Tuxedo on Linux. You'll then learn how to build your first server and client, configure Tuxedo, and start running an application. As you advance, you'll understand load balancing and work with the BBL server, which is at the heart of a Tuxedo application. This Tuxedo book will also cover Boolean expressions and different ways to export Tuxedo buffers for storage and transmission, before showing you how to implement servers and clients and use the management information base to change the configuration dynamically. Once you've learned how to configure Tuxedo for transactions and control them in application code, you'll discover how to use the store-and-forward functionality to reach destinations and use an Oracle database from a Tuxedo application. By the end of this Oracle Tuxedo book, you'll be able to perform common Tuxedo programming tasks with Python and integrate Tuxedo applications with other parts of modern infrastructure.
Table of Contents (18 chapters)
1
Section 1: The Basics
6
Section 2: The Good Bits
12
Section 3: Integrations

Creating a client

Create a client.py file with the following content:

import tuxedo as t
_, _, res = t.tpcall("TOUPPER", "Hello, world!")
print(res)

The Tuxedo client code is even simpler: just import the tuxedo module.

Then, use the synchronous remote procedure (service) call with the tpcall function and specify that we are calling the TOUPPER service and the string we want to convert to uppercase.

As a result of the service call, we get all tree values the service returned by using the tpreturn function. We will learn about each of these in Chapter 5, Developing Servers and Clients, of this book, but right now, we will use just the third one, containing a string converted to uppercase. Therefore, we will use an underscore for the first two values, which is a standard Python way of indicating values that have been ignored.