IBM DB2 manual Preparing the Python application package, Example 4-34 Code of script pyappinstall

We have assumed that Python is installed on the deployment machine, and that the user has sufficient read and write permissions to install setuptools and driver eggs. We place the egg files setuptools-0.6c7-py2.5.egg and ibm_db-0.2.9-py2.5-linux-x86_64.egg under python_deploy/gem.

You also have to prepare the DB2 driver files. We discuss how to prepare the redistributable driver files in “Preparing the redistributable driver files” on page 159. This procedure can also be applied for preparing the DB2 ODBC and CLI drivers for Python to be deployed along with the application. The script requires a slight modification. In this example, we gather the required DB2 driver files under pythony_deploy/odbcdrv and zip them in a package itso_cli.tar.gz.

Preparing the Python application package

The application is usually under some type of library control system and can be gathered easily. In our example, we only have a simple Python application file itso_pyapp.py for demonstration purpose. We place it under /python_deploy/bin.

Preparing the deployment package

To automate the application deployment as much as we can, we create a deployment script, python_app_install. The script copies the application file to

specified path and installs the gem file. It also extracts ODBC and CLI driver files to specified path and performs environmental configuration.

Example 4-27shows the deployment script. There are two command line options for the script:

￿The flag -p specifies the location where application to be deployed.

￿The flag -r registers required system variables.

Example 4-34 Code of script py_app_install

#!/usr/bin/ksh

##########################################################################

#

#Deploy application and ODBC CLI driver files to target path

#py_app_install -p <installpath> -r

#

#-p specify the location where application and ODBC drv files to be deployed

#-r specify to configure system variable for ODBC and CLI driver

#

#example: py_app_install -p /home/db2app/myapp -r"

##########################################################################

#set -x

#Define variables

DIR_DRV=odbcdrv	#	directory	for	odbc and cli	driver files
DIR_APP=bin	#	directory	for	applications

194DB2 Deployment Guide