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

Chapter 5: Developing Servers and Clients

We developed our first to upper Tuxedo application early in Chapter 2, Building Our First Tuxedo Application, of the book and then deep dived into the architecture and implementation of Tuxedo and typed buffers. There is one final topic we have to explore in depth in order to fully understand the first Tuxedo application: developing Tuxedo clients and servers themselves.

In this chapter, we will cover the following topics:

  • Writing to ULOG
  • Understanding server lifetime
  • Advertising services
  • Receiving inputs in a service
  • Returning outputs from a service
  • Understanding client lifetime
  • Calling a service
  • Joining the application

By the end of this chapter, you will know how to develop Tuxedo servers. You will know several ways to expose services to clients and how they interact with different configuration modes of Tuxedo servers. You will know how to develop Tuxedo clients to consume services in synchronous...