2eca0d1166
When passing job names as arguments to 'update', the command is supposed
to only retain this jobs. Due to the job being a dict, the filter would
never match and the none of the job would be updated.
This has apparently always been broken since the feature got introduced
in 85cf7a41. Using job.['name'] fix it up.
Change-Id: Icf4d5b0bb68777f7faff91ade04451d4c8501c6a
Reviewed-on: https://review.openstack.org/34197
Reviewed-by: Clark Boylan <clark.boylan@gmail.com>
Approved: James E. Blair <corvus@inaugust.com>
Reviewed-by: James E. Blair <corvus@inaugust.com>
Tested-by: Jenkins
452 lines
16 KiB
Python
452 lines
16 KiB
Python
#!/usr/bin/env python
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# Copyright (C) 2012 OpenStack, LLC.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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# Manage jobs in Jenkins server
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import os
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import hashlib
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import yaml
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import json
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import xml.etree.ElementTree as XML
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from xml.dom import minidom
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import jenkins
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import re
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import pkg_resources
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import logging
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import copy
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import itertools
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from jenkins_jobs.errors import JenkinsJobsException
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logger = logging.getLogger(__name__)
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def deep_format(obj, paramdict):
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"""Apply the paramdict via str.format() to all string objects found within
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the supplied obj. Lists and dicts are traversed recursively."""
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# YAML serialisation was originally used to achieve this, but that places
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# limitations on the values in paramdict - the post-format result must
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# still be valid YAML (so substituting-in a string containing quotes, for
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# example, is problematic).
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if isinstance(obj, str):
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ret = obj.format(**paramdict)
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elif isinstance(obj, list):
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ret = []
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for item in obj:
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ret.append(deep_format(item, paramdict))
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elif isinstance(obj, dict):
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ret = {}
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for item in obj:
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ret[item] = deep_format(obj[item], paramdict)
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else:
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ret = obj
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return ret
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class YamlParser(object):
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def __init__(self, config=None):
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self.registry = ModuleRegistry(config)
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self.data = {}
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self.jobs = []
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def parse(self, fn):
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data = yaml.load(open(fn))
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for item in data:
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cls, dfn = item.items()[0]
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group = self.data.get(cls, {})
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if len(item.items()) > 1:
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n = None
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for k, v in item.items():
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if k == "name":
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n = v
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break
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# Syntax error
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raise JenkinsJobsException("Syntax error, for item named "
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"'{0}'. Missing indent?".format(n))
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name = dfn['name']
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group[name] = dfn
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self.data[cls] = group
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def getJob(self, name):
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job = self.data.get('job', {}).get(name, None)
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if not job:
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return job
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return self.applyDefaults(job)
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def getJobGroup(self, name):
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return self.data.get('job-group', {}).get(name, None)
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def getJobTemplate(self, name):
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job = self.data.get('job-template', {}).get(name, None)
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if not job:
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return job
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return self.applyDefaults(job)
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def applyDefaults(self, data):
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whichdefaults = data.get('defaults', 'global')
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defaults = self.data.get('defaults', {}).get(whichdefaults, {})
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newdata = {}
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newdata.update(defaults)
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newdata.update(data)
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return newdata
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def generateXML(self, jobs_filter=None):
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changed = True
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while changed:
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changed = False
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for module in self.registry.modules:
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if hasattr(module, 'handle_data'):
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if module.handle_data(self):
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changed = True
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for job in self.data.get('job', {}).values():
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if jobs_filter and job['name'] not in jobs_filter:
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continue
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logger.debug("XMLifying job '{0}'".format(job['name']))
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job = self.applyDefaults(job)
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self.getXMLForJob(job)
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for project in self.data.get('project', {}).values():
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logger.debug("XMLifying project '{0}'".format(project['name']))
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for jobspec in project.get('jobs', []):
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if isinstance(jobspec, dict):
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# Singleton dict containing dict of job-specific params
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jobname, jobparams = jobspec.items()[0]
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else:
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jobname = jobspec
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jobparams = {}
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job = self.getJob(jobname)
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if job:
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# Just naming an existing defined job
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continue
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# see if it's a job group
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group = self.getJobGroup(jobname)
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if group:
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for group_jobname in group['jobs']:
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job = self.getJob(group_jobname)
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if job:
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continue
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template = self.getJobTemplate(group_jobname)
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# Allow a group to override parameters set by a project
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d = {}
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d.update(project)
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d.update(jobparams)
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d.update(group)
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# Except name, since the group's name is not useful
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d['name'] = project['name']
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if template:
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self.getXMLForTemplateJob(d, template, jobs_filter)
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continue
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# see if it's a template
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template = self.getJobTemplate(jobname)
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if template:
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d = {}
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d.update(project)
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d.update(jobparams)
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self.getXMLForTemplateJob(d, template, jobs_filter)
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def getXMLForTemplateJob(self, project, template, jobs_filter=None):
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dimensions = []
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for (k, v) in project.items():
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if type(v) == list and k not in ['jobs']:
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dimensions.append(zip([k] * len(v), v))
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# XXX somewhat hackish to ensure we actually have a single
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# pass through the loop
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if len(dimensions) == 0:
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dimensions = [(("", ""),)]
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checksums = set([])
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for values in itertools.product(*dimensions):
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params = copy.deepcopy(project)
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params.update(values)
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expanded = deep_format(template, params)
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# Keep track of the resulting expansions to avoid
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# regenerating the exact same job. Whenever a project has
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# different values for a parameter and that parameter is not
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# used in the template, we ended up regenerating the exact
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# same job.
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# To achieve that we serialize the expanded template making
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# sure the dict keys are always in the same order. Then we
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# record the checksum in an unordered unique set which let
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# us guarantee a group of parameters will not be added a
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# second time.
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uniq = json.dumps(expanded, sort_keys=True)
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checksum = hashlib.md5(uniq).hexdigest()
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# Lookup the checksum
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if checksum not in checksums:
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# We also want to skip XML generation whenever the user did
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# not ask for that job.
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job_name = expanded.get('name')
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if jobs_filter and job_name not in jobs_filter:
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continue
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logger.debug("Generating XML for template job {0}"
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" (params {1})".format(
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template['name'], params))
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self.getXMLForJob(expanded)
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checksums.add(checksum)
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def getXMLForJob(self, data):
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kind = data.get('project-type', 'freestyle')
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for ep in pkg_resources.iter_entry_points(
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group='jenkins_jobs.projects', name=kind):
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Mod = ep.load()
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mod = Mod(self.registry)
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xml = mod.root_xml(data)
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self.gen_xml(xml, data)
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job = XmlJob(xml, data['name'])
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self.jobs.append(job)
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break
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def gen_xml(self, xml, data):
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for module in self.registry.modules:
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if hasattr(module, 'gen_xml'):
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module.gen_xml(self, xml, data)
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class ModuleRegistry(object):
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def __init__(self, config):
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self.modules = []
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self.modules_by_component_type = {}
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self.handlers = {}
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self.global_config = config
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for entrypoint in pkg_resources.iter_entry_points(
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group='jenkins_jobs.modules'):
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Mod = entrypoint.load()
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mod = Mod(self)
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self.modules.append(mod)
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self.modules.sort(lambda a, b: cmp(a.sequence, b.sequence))
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if mod.component_type is not None:
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self.modules_by_component_type[mod.component_type] = mod
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def registerHandler(self, category, name, method):
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cat_dict = self.handlers.get(category, {})
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if not cat_dict:
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self.handlers[category] = cat_dict
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cat_dict[name] = method
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def getHandler(self, category, name):
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return self.handlers[category][name]
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def dispatch(self, component_type,
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parser, xml_parent,
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component, template_data={}):
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"""This is a method that you can call from your implementation of
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Base.gen_xml or component. It allows modules to define a type
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of component, and benefit from extensibility via Python
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entry points and Jenkins Job Builder :ref:`Macros <macro>`.
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:arg string component_type: the name of the component
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(e.g., `builder`)
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:arg YAMLParser parser: the global YMAL Parser
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:arg Element xml_parent: the parent XML element
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:arg dict template_data: values that should be interpolated into
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the component definition
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See :py:class:`jenkins_jobs.modules.base.Base` for how to register
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components of a module.
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See the Publishers module for a simple example of how to use
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this method.
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"""
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if component_type not in self.modules_by_component_type:
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raise JenkinsJobsException("Unknown component type: "
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"'{0}'.".format(component_type))
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component_list_type = self.modules_by_component_type[component_type] \
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.component_list_type
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if isinstance(component, dict):
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# The component is a sigleton dictionary of name: dict(args)
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name, component_data = component.items()[0]
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if template_data:
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# Template data contains values that should be interpolated
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# into the component definition
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s = yaml.dump(component_data, default_flow_style=False)
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s = s.format(**template_data)
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component_data = yaml.load(s)
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else:
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# The component is a simple string name, eg "run-tests"
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name = component
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component_data = {}
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# Look for a component function defined in an entry point
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for ep in pkg_resources.iter_entry_points(
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group='jenkins_jobs.{0}'.format(component_list_type), name=name):
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func = ep.load()
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func(parser, xml_parent, component_data)
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else:
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# Otherwise, see if it's defined as a macro
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component = parser.data.get(component_type, {}).get(name)
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if component:
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for b in component[component_list_type]:
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# Pass component_data in as template data to this function
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# so that if the macro is invoked with arguments,
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# the arguments are interpolated into the real defn.
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self.dispatch(component_type,
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parser, xml_parent, b, component_data)
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class XmlJob(object):
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def __init__(self, xml, name):
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self.xml = xml
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self.name = name
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def md5(self):
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return hashlib.md5(self.output()).hexdigest()
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# Pretty printing ideas from
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# http://stackoverflow.com/questions/749796/pretty-printing-xml-in-python
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pretty_text_re = re.compile('>\n\s+([^<>\s].*?)\n\s+</', re.DOTALL)
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def output(self):
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out = minidom.parseString(XML.tostring(self.xml))
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out = out.toprettyxml(indent=' ')
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return self.pretty_text_re.sub('>\g<1></', out)
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class CacheStorage(object):
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def __init__(self, jenkins_url):
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cache_dir = self.get_cache_dir()
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# One cache per remote Jenkins URL:
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host_vary = re.sub('[^A-Za-z0-9\-\~]', '_', jenkins_url)
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self.cachefilename = os.path.join(
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cache_dir, 'cache-host-jobs-' + host_vary + '.yml')
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try:
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yfile = file(self.cachefilename, 'r')
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except IOError:
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self.data = {}
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return
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self.data = yaml.load(yfile)
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logger.debug("Using cache: '{0}'".format(self.cachefilename))
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yfile.close()
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@staticmethod
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def get_cache_dir():
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home = os.path.expanduser('~')
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if home == '~':
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raise OSError('Could not locate home folder')
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xdg_cache_home = os.environ.get('XDG_CACHE_HOME') or \
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os.path.join(home, '.cache')
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path = os.path.join(xdg_cache_home, 'jenkins_jobs')
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if not os.path.isdir(path):
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os.makedirs(path)
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return path
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def set(self, job, md5):
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self.data[job] = md5
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yfile = file(self.cachefilename, 'w')
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yaml.dump(self.data, yfile)
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yfile.close()
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def is_cached(self, job):
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if job in self.data:
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return True
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return False
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def has_changed(self, job, md5):
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if job in self.data and self.data[job] == md5:
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return False
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return True
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class Jenkins(object):
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def __init__(self, url, user, password):
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self.jenkins = jenkins.Jenkins(url, user, password)
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def update_job(self, job_name, xml):
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if self.is_job(job_name):
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logger.info("Reconfiguring jenkins job {0}".format(job_name))
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self.jenkins.reconfig_job(job_name, xml)
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else:
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logger.info("Creating jenkins job {0}".format(job_name))
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self.jenkins.create_job(job_name, xml)
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def is_job(self, job_name):
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return self.jenkins.job_exists(job_name)
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def get_job_md5(self, job_name):
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xml = self.jenkins.get_job_config(job_name)
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return hashlib.md5(xml).hexdigest()
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def delete_job(self, job_name):
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if self.is_job(job_name):
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self.jenkins.delete_job(job_name)
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def get_jobs(self):
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return self.jenkins.get_jobs()
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class Builder(object):
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def __init__(self, jenkins_url, jenkins_user, jenkins_password,
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config=None):
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self.jenkins = Jenkins(jenkins_url, jenkins_user, jenkins_password)
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self.cache = CacheStorage(jenkins_url)
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self.global_config = config
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def delete_job(self, name):
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self.jenkins.delete_job(name)
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if(self.cache.is_cached(name)):
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self.cache.set(name, '')
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def delete_all_jobs(self):
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jobs = self.jenkins.get_jobs()
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for job in jobs:
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self.delete_job(job['name'])
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def update_job(self, fn, names=None, output_dir=None):
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if os.path.isdir(fn):
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files_to_process = [os.path.join(fn, f)
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for f in os.listdir(fn)
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if (f.endswith('.yml') or f.endswith('.yaml'))]
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else:
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files_to_process = [fn]
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parser = YamlParser(self.global_config)
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for in_file in files_to_process:
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logger.debug("Parsing YAML file {0}".format(in_file))
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parser.parse(in_file)
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if names:
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logger.debug("Will filter out jobs not in %s" % names)
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parser.generateXML(names)
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parser.jobs.sort(lambda a, b: cmp(a.name, b.name))
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for job in parser.jobs:
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if names and job.name not in names:
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continue
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if output_dir:
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if names:
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print job.output()
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continue
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fn = os.path.join(output_dir, job.name)
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logger.debug("Writing XML to '{0}'".format(fn))
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f = open(fn, 'w')
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f.write(job.output())
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f.close()
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continue
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md5 = job.md5()
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if (self.jenkins.is_job(job.name)
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and not self.cache.is_cached(job.name)):
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old_md5 = self.jenkins.get_job_md5(job.name)
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self.cache.set(job.name, old_md5)
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if self.cache.has_changed(job.name, md5):
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self.jenkins.update_job(job.name, job.output())
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self.cache.set(job.name, md5)
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else:
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logger.debug("'{0}' has not changed".format(job.name))
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