UCS 2.4 - Univention

closed with the string @!@.
14.12 Integrating Python code
In the following example the template /etc/univention/templates/files/etc/issue (from which
the /etc/issue file is created) is expanded with Python code. Before it looks like this:
@!@
if baseConfig[’version/version’] and baseConfig[’version/patchlevel’]:
print ’UCS \%s-\%s \BS\BSn \BS\BSl’ \% \
(baseConfig[’version/version’], \
baseConfig[’version/patchlevel’])
@!@
If the value of a Univention Configuration Registry variable should be queried in Python code, the baseC-
onfig Python object can be used as shown in the example. When using Python code it is important to note
that the variables used in the Python code are specified when creating the package (see Chapter 14.10).
Two Univention Configuration Registry variables, hostname and domainname, are now added outside of
the Python code, while the /etc/univention/templates/files/etc/issue template is edited as
follows:
@!@
if baseConfig[’version/version’] and baseConfig[’version/patchlevel’]:
print ’UCS \%s-\%s \BS\BSn \BS\BSl’ \% \
(baseConfig[’version/version’], \
baseConfig[’version/patchlevel’])
@!@
The host name is: @%@hostname@%@
The domain name is: @%@domainname@%@
The /etc/issue file can now be regenerated from its template using the following command:
univention-config-registry commit /etc/issue
If new variables are introduced, it is important to follow the naming scheme (see Chapter 14.5). The
following example introduces two new variables, my/variable1 and my/variable2:
@!@
if baseConfig[’version/version’] and baseConfig[’version/patchlevel’]:
print ’UCS \%s-\%s \BS\BSn \BS\BSl’ \% \
(baseConfig[’version/version’], \
baseConfig[’version/patchlevel’])
@!@
My first variable: @%@my/variable1@%@
My second variable: @%@my/variable2@%@
To fill the new variables defined in inline Python code with values, the cache file must be deleted once from
Univention Configuration Registry.
rm /var/cache/univention-config/cache
The new variables can then be set as described in Chapter 14.5.
univention-config-registry set my/variable1="foo" set my/variable2="bar"
The /etc/issue file is now regenerated from its template.
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