jjb
/
jenkins-job-builder
Code Issues Proposed changes

Document template variable default values 

Document the ability to define default values for template variables
within the template definition thus removing the need to always having
to set such values in job definitions.

Change-Id: If4d8bfd898066b8e6350ed22f0c97eb939ae4348
This commit is contained in:
Darragh Bailey 2016-02-20 18:11:58 +00:00
parent 398e28b3c3
commit a54e623dc7
3 changed files with 89 additions and 0 deletions
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20
doc/source/definition.rst
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@ -74,6 +74,26 @@ Sometimes it is useful to have the same job name format used even
where the template contents may vary. `Ids` provide a mechanism to
support such use cases.
Default Values for Template Variables
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
To facilitate reuse of templates with many variables that can be
substituted, but where in most cases the same or no value is needed,
it is possible to specify defaults for the variables within the
templates themselves.
This can be used to provide common settings for particular templates.
For example:
.. literalinclude::
/../..tests/yamlparser/fixtures/template_default_variables.yaml
:language: yaml
To use a default value for a variable used in the name would be
uncommon unless it was in addition to another variable. However you
can use `Ids`_ simplify such use cases.
.. _project:
Project

44
tests/yamlparser/fixtures/template_default_variables.xml Normal file
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@ -0,0 +1,44 @@
<?xml version="1.0" encoding="utf-8"?>
<project>
<actions/>
<description>&lt;!-- Managed by Jenkins Job Builder --&gt;</description>
<keepDependencies>false</keepDependencies>
<disabled>true</disabled>
<blockBuildWhenDownstreamBuilding>false</blockBuildWhenDownstreamBuilding>
<blockBuildWhenUpstreamBuilding>false</blockBuildWhenUpstreamBuilding>
<concurrentBuild>false</concurrentBuild>
<canRoam>true</canRoam>
<properties/>
<scm class="hudson.scm.NullSCM"/>
<builders>
<hudson.tasks.Shell>
<command>echo &quot;Job Name: template-variable-defaults-1-periodic&quot;
echo &quot;Variable: Hello World&quot;
</command>
</hudson.tasks.Shell>
</builders>
<publishers/>
<buildWrappers/>
</project>
<?xml version="1.0" encoding="utf-8"?>
<project>
<actions/>
<description>&lt;!-- Managed by Jenkins Job Builder --&gt;</description>
<keepDependencies>false</keepDependencies>
<blockBuildWhenDownstreamBuilding>false</blockBuildWhenDownstreamBuilding>
<blockBuildWhenUpstreamBuilding>false</blockBuildWhenUpstreamBuilding>
<concurrentBuild>false</concurrentBuild>
<canRoam>true</canRoam>
<properties/>
<scm class="hudson.scm.NullSCM"/>
<builders>
<hudson.tasks.Shell>
<command>echo &quot;Job Name: template-variable-defaults-2-periodic&quot;
echo &quot;Variable: Goodbye World&quot;
</command>
</hudson.tasks.Shell>
</builders>
<publishers/>
<buildWrappers/>
</project>

25
tests/yamlparser/fixtures/template_default_variables.yaml Normal file
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@ -0,0 +1,25 @@
- project:
name: template_variable_defaults
jobs:
- 'template-variable-defaults-{num}':
num: 1
disabled_var: true
- 'template-variable-defaults-{num}':
test_var: Goodbye World
num: 2
- job-template:
# template specific defaults
# empty value causes disabled_var to be ignored internally
disabled_var:
test_var: Hello World
type: periodic
# template settings
name: 'template-variable-defaults-{num}-{type}'
id: 'template-variable-defaults-{num}'
disabled: '{obj:disabled_var}'
builders:
- shell: |
echo "Job Name: template-variable-defaults-{num}-{type}"
echo "Variable: {test_var}"