jenkins-job-builder/jenkins_jobs/modules/base.py

87 lines
3.1 KiB
Python

# Copyright 2012 Hewlett-Packard Development Company, L.P.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
# Base class for a jenkins_jobs module
import xml.etree.ElementTree as XML
def add_nonblank_xml_subelement(parent, tag, value):
"""
Adds an XML SubElement with the name tag to parent if value is a non-empty
string
"""
if value is not None and value != '':
XML.SubElement(parent, tag).text = value
class Base(object):
"""
A base class for a Jenkins Job Builder Module.
The module is initialized before any YAML is parsed.
:arg ModuleRegistry registry: the global module registry.
"""
#: The sequence number for the module. Modules are invoked in the
#: order of their sequence number in order to produce consistently
#: ordered XML output.
sequence = 10
#: The component type for components of this module. This will be
#: used to look for macros (they are defined singularly, and should
#: not be plural).
#: Set both component_type and component_list_type to None if module
#: doesn't have components.
component_type = None
#: The component list type will be used to look up possible
#: implementations of the component type via entry points (entry
#: points provide a list of components, so it should be plural).
#: Set both component_type and component_list_type to None if module
#: doesn't have components.
component_list_type = None
def __init__(self, registry):
self.registry = registry
def handle_data(self, job_data):
"""This method is called before any XML is generated. By
overriding this method, a module may arbitrarily modify a data
structure which will probably be the JJB YamlParser's intermediate data
representation. If it has changed the data structure at all, it must
return ``True``, otherwise, it must return ``False``.
:arg dict job_data: the intermediate representation of job data
loaded from JJB Yaml files without variables interpolation or other
yaml expansions.
:rtype: boolean
"""
return False
def gen_xml(self, xml_parent, data):
"""Update the XML element tree based on YAML data. Override
this method to add elements to the XML output. Create new
Element objects and add them to the xml_parent. The YAML data
structure must not be modified.
:arg YAMLParser parser: the global YAML Parser
:arg Element xml_parent: the parent XML element
:arg dict data: the YAML data structure
"""
pass