/usr/lib/python3/dist-packages/jenkins_jobs/parser.py is in python3-jenkins-job-builder 1.3.0+2015.12.15.git136.959eb4b909-1.
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# Copyright (C) 2015 OpenStack, LLC.
#
# 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.
# Manage JJB yaml feature implementation
import copy
import fnmatch
import io
import itertools
import logging
import pkg_resources
import jenkins_jobs.local_yaml as local_yaml
from jenkins_jobs.constants import MAGIC_MANAGE_STRING
from jenkins_jobs.errors import JenkinsJobsException
from jenkins_jobs.registry import ModuleRegistry
from jenkins_jobs.formatter import deep_format
from jenkins_jobs import utils
from jenkins_jobs.xml_config import XmlJob
logger = logging.getLogger(__name__)
def matches(what, glob_patterns):
"""
Checks if the given string, ``what``, matches any of the glob patterns in
the iterable, ``glob_patterns``
:arg str what: String that we want to test if it matches a pattern
:arg iterable glob_patterns: glob patterns to match (list, tuple, set,
etc.)
"""
return any(fnmatch.fnmatch(what, glob_pattern)
for glob_pattern in glob_patterns)
class YamlParser(object):
def __init__(self, config=None, plugins_info=None):
self.data = {}
self.jobs = []
self.xml_jobs = []
self.config = config
self.registry = ModuleRegistry(self.config, plugins_info)
self.path = ["."]
if self.config:
if config.has_section('job_builder') and \
config.has_option('job_builder', 'include_path'):
self.path = config.get('job_builder',
'include_path').split(':')
self.keep_desc = self.get_keep_desc()
def get_keep_desc(self):
keep_desc = False
if self.config and self.config.has_section('job_builder') and \
self.config.has_option('job_builder', 'keep_descriptions'):
keep_desc = self.config.getboolean('job_builder',
'keep_descriptions')
return keep_desc
def parse_fp(self, fp):
# wrap provided file streams to ensure correct encoding used
data = local_yaml.load(utils.wrap_stream(fp), search_path=self.path)
if data:
if not isinstance(data, list):
raise JenkinsJobsException(
"The topmost collection in file '{fname}' must be a list,"
" not a {cls}".format(fname=getattr(fp, 'name', fp),
cls=type(data)))
for item in data:
cls, dfn = next(iter(item.items()))
group = self.data.get(cls, {})
if len(item.items()) > 1:
n = None
for k, v in item.items():
if k == "name":
n = v
break
# Syntax error
raise JenkinsJobsException("Syntax error, for item "
"named '{0}'. Missing indent?"
.format(n))
name = dfn['name']
if name in group:
self._handle_dups("Duplicate entry found in '{0}: '{1}' "
"already defined".format(fp.name, name))
group[name] = dfn
self.data[cls] = group
def parse(self, fn):
with io.open(fn, 'r', encoding='utf-8') as fp:
self.parse_fp(fp)
def _handle_dups(self, message):
if not (self.config and self.config.has_section('job_builder') and
self.config.getboolean('job_builder', 'allow_duplicates')):
logger.error(message)
raise JenkinsJobsException(message)
else:
logger.warn(message)
def getJob(self, name):
job = self.data.get('job', {}).get(name, None)
if not job:
return job
return self.applyDefaults(job)
def getJobGroup(self, name):
return self.data.get('job-group', {}).get(name, None)
def getJobTemplate(self, name):
job = self.data.get('job-template', {}).get(name, None)
if not job:
return job
return self.applyDefaults(job)
def applyDefaults(self, data, override_dict=None):
if override_dict is None:
override_dict = {}
whichdefaults = data.get('defaults', 'global')
defaults = copy.deepcopy(self.data.get('defaults',
{}).get(whichdefaults, {}))
if defaults == {} and whichdefaults != 'global':
raise JenkinsJobsException("Unknown defaults set: '{0}'"
.format(whichdefaults))
for key in override_dict.keys():
if key in defaults.keys():
defaults[key] = override_dict[key]
newdata = {}
newdata.update(defaults)
newdata.update(data)
return newdata
def formatDescription(self, job):
if self.keep_desc:
description = job.get("description", None)
else:
description = job.get("description", '')
if description is not None:
job["description"] = description + \
self.get_managed_string().lstrip()
def expandYaml(self, jobs_glob=None):
changed = True
while changed:
changed = False
for module in self.registry.modules:
if hasattr(module, 'handle_data'):
if module.handle_data(self):
changed = True
for job in self.data.get('job', {}).values():
if jobs_glob and not matches(job['name'], jobs_glob):
logger.debug("Ignoring job {0}".format(job['name']))
continue
logger.debug("Expanding job '{0}'".format(job['name']))
job = self.applyDefaults(job)
self.formatDescription(job)
self.jobs.append(job)
for project in self.data.get('project', {}).values():
logger.debug("Expanding project '{0}'".format(project['name']))
# use a set to check for duplicate job references in projects
seen = set()
for jobspec in project.get('jobs', []):
if isinstance(jobspec, dict):
# Singleton dict containing dict of job-specific params
jobname, jobparams = next(iter(jobspec.items()))
if not isinstance(jobparams, dict):
jobparams = {}
else:
jobname = jobspec
jobparams = {}
job = self.getJob(jobname)
if job:
# Just naming an existing defined job
if jobname in seen:
self._handle_dups("Duplicate job '{0}' specified "
"for project '{1}'".format(
jobname, project['name']))
seen.add(jobname)
continue
# see if it's a job group
group = self.getJobGroup(jobname)
if group:
for group_jobspec in group['jobs']:
if isinstance(group_jobspec, dict):
group_jobname, group_jobparams = \
next(iter(group_jobspec.items()))
if not isinstance(group_jobparams, dict):
group_jobparams = {}
else:
group_jobname = group_jobspec
group_jobparams = {}
job = self.getJob(group_jobname)
if job:
if group_jobname in seen:
self._handle_dups(
"Duplicate job '{0}' specified for "
"project '{1}'".format(group_jobname,
project['name']))
seen.add(group_jobname)
continue
template = self.getJobTemplate(group_jobname)
# Allow a group to override parameters set by a project
d = {}
d.update(project)
d.update(jobparams)
d.update(group)
d.update(group_jobparams)
# Except name, since the group's name is not useful
d['name'] = project['name']
if template:
self.expandYamlForTemplateJob(d, template,
jobs_glob)
continue
# see if it's a template
template = self.getJobTemplate(jobname)
if template:
d = {}
d.update(project)
d.update(jobparams)
self.expandYamlForTemplateJob(d, template, jobs_glob)
else:
raise JenkinsJobsException("Failed to find suitable "
"template named '{0}'"
.format(jobname))
# check for duplicate generated jobs
seen = set()
# walk the list in reverse so that last definition wins
for job in self.jobs[::-1]:
if job['name'] in seen:
self._handle_dups("Duplicate definitions for job '{0}' "
"specified".format(job['name']))
self.jobs.remove(job)
seen.add(job['name'])
def expandYamlForTemplateJob(self, project, template, jobs_glob=None):
dimensions = []
template_name = template['name']
# reject keys that are not useful during yaml expansion
for k in ['jobs']:
project.pop(k)
for (k, v) in project.items():
tmpk = '{{{0}}}'.format(k)
if tmpk not in template_name:
continue
if type(v) == list:
dimensions.append(zip([k] * len(v), v))
# XXX somewhat hackish to ensure we actually have a single
# pass through the loop
if len(dimensions) == 0:
dimensions = [(("", ""),)]
for values in itertools.product(*dimensions):
params = copy.deepcopy(project)
params = self.applyDefaults(params, template)
expanded_values = {}
for (k, v) in values:
if isinstance(v, dict):
inner_key = next(iter(v))
expanded_values[k] = inner_key
expanded_values.update(v[inner_key])
else:
expanded_values[k] = v
params.update(expanded_values)
params = deep_format(params, params)
allow_empty_variables = self.config \
and self.config.has_section('job_builder') \
and self.config.has_option(
'job_builder', 'allow_empty_variables') \
and self.config.getboolean(
'job_builder', 'allow_empty_variables')
for key in template.keys():
if key not in params:
params[key] = template[key]
params['template-name'] = template_name
expanded = deep_format(template, params, allow_empty_variables)
job_name = expanded.get('name')
if jobs_glob and not matches(job_name, jobs_glob):
continue
self.formatDescription(expanded)
self.jobs.append(expanded)
def get_managed_string(self):
# The \n\n is not hard coded, because they get stripped if the
# project does not otherwise have a description.
return "\n\n" + MAGIC_MANAGE_STRING
def generateXML(self):
for job in self.jobs:
self.xml_jobs.append(self.getXMLForJob(job))
def getXMLForJob(self, data):
kind = data.get('project-type', 'freestyle')
for ep in pkg_resources.iter_entry_points(
group='jenkins_jobs.projects', name=kind):
Mod = ep.load()
mod = Mod(self.registry)
xml = mod.root_xml(data)
self.gen_xml(xml, data)
job = XmlJob(xml, data['name'])
return job
def gen_xml(self, xml, data):
for module in self.registry.modules:
if hasattr(module, 'gen_xml'):
module.gen_xml(self, xml, data)
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