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Adding jenkins_plugin module (#1730)

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reviewable/pr18780/r1
Jiri Tyr 8 years ago committed by Matt Clay
parent cfff23fa4a
commit f25bf01053
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web_infrastructure/jenkins_plugin.py
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#!/usr/bin/python
# encoding: utf-8
# (c) 2016, Jiri Tyr <jiri.tyr@gmail.com>
#
# This file is part of Ansible
#
# Ansible is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Ansible is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Ansible. If not, see <http://www.gnu.org/licenses/>.
from ansible.module_utils.basic import AnsibleModule
from ansible.module_utils.pycompat24 import get_exception
from ansible.module_utils.urls import fetch_url
from ansible.module_utils.urls import url_argument_spec
import base64
import hashlib
import json
import os
import tempfile
import time
import urllib
DOCUMENTATION = '''
---
module: jenkins_plugin
author: Jiri Tyr (@jtyr)
version_added: '2.2'
short_description: Add or remove Jenkins plugin
description:
- Ansible module which helps to manage Jenkins plugins.
options:
group:
required: false
default: jenkins
description:
- Name of the Jenkins group on the OS.
jenkins_home:
required: false
default: /var/lib/jenkins
description:
- Home directory of the Jenkins user.
mode:
required: false
default: '0664'
description:
- File mode applied on versioned plugins.
name:
required: true
description:
- Plugin name.
owner:
required: false
default: jenkins
description:
- Name of the Jenkins user on the OS.
params:
required: false
default: null
description:
- Option used to allow the user to overwrite any of the other options. To
remove an option, set the value of the option to C(null).
state:
required: false
choices: [absent, present, pinned, unpinned, enabled, disabled, latest]
default: present
description:
- Desired plugin state.
- If the C(latest) is set, the check for new version will be performed
every time. This is suitable to keep the plugin up-to-date.
timeout:
required: false
default: 30
description:
- Server connection timeout in secs.
updates_expiration:
required: false
default: 86400
description:
- Number of seconds after which a new copy of the I(update-center.json)
file is downloaded. This is used to avoid the need to download the
plugin to calculate its checksum when C(latest) is specified.
- Set it to C(0) if no cache file should be used. In that case, the
plugin file will always be downloaded to calculate its checksum when
C(latest) is specified.
updates_url:
required: false
default: https://updates.jenkins-ci.org
description:
- URL of the Update Centre.
- Used as the base URL to download the plugins and the
I(update-center.json) JSON file.
url:
required: false
default: http://localhost:8080
description:
- URL of the Jenkins server.
version:
required: false
default: null
description:
- Plugin version number.
- If this option is specified, all plugin dependencies must be installed
manually.
- It might take longer to verify that the correct version is installed.
This is especially true if a specific version number is specified.
with_dependencies:
required: false
choices: ['yes', 'no']
default: 'yes'
description:
- Defines whether to install plugin dependencies.
notes:
- Plugin installation shoud be run under root or the same user which owns
the plugin files on the disk. Only if the plugin is not installed yet and
no version is specified, the API installation is performed which requires
only the Web UI credentials.
- It's necessary to notify the handler or call the I(service) module to
restart the Jenkins service after a new plugin was installed.
- Pinning works only if the plugin is installed and Jenkis service was
successfully restarted after the plugin installation.
- It is not possible to run the module remotely by changing the I(url)
parameter to point to the Jenkins server. The module must be used on the
host where Jenkins runs as it needs direct access to the plugin files.
'''
EXAMPLES = '''
- name: Install plugin
jenkins_plugin:
name: build-pipeline-plugin
- name: Install plugin without its dependencies
jenkins_plugin:
name: build-pipeline-plugin
with_dependencies: no
- name: Make sure the plugin is always up-to-date
jenkins_plugin:
name: token-macro
state: latest
- name: Install specific version of the plugin
jenkins_plugin:
name: token-macro
version: 1.15
- name: Pin the plugin
jenkins_plugin:
name: token-macro
state: pinned
- name: Unpin the plugin
jenkins_plugin:
name: token-macro
state: unpinned
- name: Enable the plugin
jenkins_plugin:
name: token-macro
state: enabled
- name: Disable the plugin
jenkins_plugin:
name: token-macro
state: disabled
- name: Uninstall plugin
jenkins_plugin:
name: build-pipeline-plugin
state: absent
#
# Example of how to use the params
#
# Define a variable and specify all default parameters you want to use across
# all jenkins_plugin calls:
#
# my_jenkins_params:
# url_username: admin
# url_password: p4ssw0rd
# url: http://localhost:8888
#
- name: Install plugin
jenkins_plugin:
name: build-pipeline-plugin
params: "{{ my_jenkins_params }}"
#
# Example of a Play which handles Jenkins restarts during the state changes
#
- name: Jenkins Master play
hosts: jenkins-master
vars:
my_jenkins_plugins:
token-macro:
enabled: yes
build-pipeline-plugin:
version: 1.4.9
pinned: no
enabled: yes
tasks:
- name: Install plugins without a specific version
jenkins_plugin:
name: "{{ item.key }}"
register: my_jenkins_plugin_unversioned
when: >
'version' not in item.value
with_dict: my_jenkins_plugins
- name: Install plugins with a specific version
jenkins_plugin:
name: "{{ item.key }}"
version: "{{ item.value['version'] }}"
register: my_jenkins_plugin_versioned
when: >
'version' in item.value
with_dict: my_jenkins_plugins
- name: Initiate the fact
set_fact:
jenkins_restart_required: no
- name: Check if restart is required by any of the versioned plugins
set_fact:
jenkins_restart_required: yes
when: item.changed
with_items: my_jenkins_plugin_versioned.results
- name: Check if restart is required by any of the unversioned plugins
set_fact:
jenkins_restart_required: yes
when: item.changed
with_items: my_jenkins_plugin_unversioned.results
- name: Restart Jenkins if required
service:
name: jenkins
state: restarted
when: jenkins_restart_required
# Requires python-httplib2 to be installed on the guest
- name: Wait for Jenkins to start up
uri:
url: http://localhost:8080
status_code: 200
timeout: 5
register: jenkins_service_status
# Keep trying for 5 mins in 5 sec intervals
retries: 60
delay: 5
until: >
'status' in jenkins_service_status and
jenkins_service_status['status'] == 200
when: jenkins_restart_required
- name: Reset the fact
set_fact:
jenkins_restart_required: no
when: jenkins_restart_required
- name: Plugin pinning
jenkins_plugin:
name: "{{ item.key }}"
state: "{{ 'pinned' if item.value['pinned'] else 'unpinned'}}"
when: >
'pinned' in item.value
with_dict: my_jenkins_plugins
- name: Plugin enabling
jenkins_plugin:
name: "{{ item.key }}"
state: "{{ 'enabled' if item.value['enabled'] else 'disabled'}}"
when: >
'enabled' in item.value
with_dict: my_jenkins_plugins
'''
RETURN = '''
plugin:
description: plugin name
returned: success
type: string
sample: build-pipeline-plugin
state:
description: state of the target, after execution
returned: success
type: string
sample: "present"
'''
class JenkinsPlugin(object):
def __init__(self, module):
# To be able to call fail_json
self.module = module
# Shortcuts for the params
self.params = self.module.params
self.url = self.params['url']
self.timeout = self.params['timeout']
# Crumb
self.crumb = {}
if self._csrf_enabled():
self.crumb = self._get_crumb()
# Get list of installed plugins
self._get_installed_plugins()
def _csrf_enabled(self):
csrf_data = self._get_json_data(
"%s/%s" % (self.url, "api/json"), 'CSRF')
return csrf_data["useCrumbs"]
def _get_json_data(self, url, what, **kwargs):
# Get the JSON data
r = self._get_url_data(url, what, **kwargs)
# Parse the JSON data
try:
json_data = json.load(r)
except Exception:
e = get_exception()
self.module.fail_json(
msg="Cannot parse %s JSON data." % what,
details=e.message)
return json_data
def _get_url_data(
self, url, what=None, msg_status=None, msg_exception=None,
**kwargs):
# Compose default messages
if msg_status is None:
msg_status = "Cannot get %s" % what
if msg_exception is None:
msg_exception = "Retrieval of %s failed." % what
# Get the URL data
try:
response, info = fetch_url(
self.module, url, timeout=self.timeout, **kwargs)
if info['status'] != 200:
self.module.fail_json(msg=msg_status, details=info['msg'])
except Exception:
e = get_exception()
self.module.fail_json(msg=msg_exception, details=e.message)
return response
def _get_crumb(self):
crumb_data = self._get_json_data(
"%s/%s" % (self.url, "crumbIssuer/api/json"), 'Crumb')
if 'crumbRequestField' in crumb_data and 'crumb' in crumb_data:
ret = {
crumb_data['crumbRequestField']: crumb_data['crumb']
}
else:
self.module.fail_json(
msg="Required fields not found in the Crum response.",
details=crumb_data)
return ret
def _get_installed_plugins(self):
plugins_data = self._get_json_data(
"%s/%s" % (self.url, "pluginManager/api/json?depth=1"),
'list of plugins')
# Check if we got valid data
if 'plugins' not in plugins_data:
self.module.fail_json(msg="No valid plugin data found.")
# Create final list of installed/pined plugins
self.is_installed = False
self.is_pinned = False
self.is_enabled = False
for p in plugins_data['plugins']:
if p['shortName'] == self.params['name']:
self.is_installed = True
if p['pinned']:
self.is_pinned = True
if p['enabled']:
self.is_enabled = True
break
def install(self):
changed = False
plugin_file = (
'%s/plugins/%s.jpi' % (
self.params['jenkins_home'],
self.params['name']))
if not self.is_installed and self.params['version'] is None:
if not self.module.check_mode:
# Install the plugin (with dependencies)
install_script = (
'd = Jenkins.instance.updateCenter.getPlugin("%s")'
'.deploy(); d.get();' % self.params['name'])
if self.params['with_dependencies']:
install_script = (
'Jenkins.instance.updateCenter.getPlugin("%s")'
'.getNeededDependencies().each{it.deploy()}; %s' % (
self.params['name'], install_script))
script_data = {
'script': install_script
}
script_data.update(self.crumb)
data = urllib.urlencode(script_data)
# Send the installation request
r = self._get_url_data(
"%s/scriptText" % self.url,
msg_status="Cannot install plugin.",
msg_exception="Plugin installation has failed.",
data=data)
changed = True
else:
# Check if the plugin directory exists
if not os.path.isdir(self.params['jenkins_home']):
self.module.fail_json(
msg="Jenkins home directory doesn't exist.")
md5sum_old = None
if os.path.isfile(plugin_file):
# Make the checksum of the currently installed plugin
md5sum_old = hashlib.md5(
open(plugin_file, 'rb').read()).hexdigest()
if self.params['version'] in [None, 'latest']:
# Take latest version
plugin_url = (
"%s/latest/%s.hpi" % (
self.params['updates_url'],
self.params['name']))
else:
# Take specific version
plugin_url = (
"{0}/download/plugins/"
"{1}/{2}/{1}.hpi".format(
self.params['updates_url'],
self.params['name'],
self.params['version']))
if (
self.params['updates_expiration'] == 0 or
self.params['version'] not in [None, 'latest'] or
md5sum_old is None):
# Download the plugin file directly
r = self._download_plugin(plugin_url)
# Write downloaded plugin into file if checksums don't match
if md5sum_old is None:
# No previously installed plugin
if not self.module.check_mode:
self._write_file(plugin_file, r)
changed = True
else:
# Get data for the MD5
data = r.read()
# Make new checksum
md5sum_new = hashlib.md5(data).hexdigest()
# If the checksum is different from the currently installed
# plugin, store the new plugin
if md5sum_old != md5sum_new:
if not self.module.check_mode:
self._write_file(plugin_file, data)
changed = True
else:
# Check for update from the updates JSON file
plugin_data = self._download_updates()
try:
sha1_old = hashlib.sha1(open(plugin_file, 'rb').read())
except Exception:
e = get_exception()
self.module.fail_json(
msg="Cannot calculate SHA1 of the old plugin.",
details=e.message)
sha1sum_old = base64.b64encode(sha1_old.digest())
# If the latest version changed, download it
if sha1sum_old != plugin_data['sha1']:
if not self.module.check_mode:
r = self._download_plugin(plugin_url)
self._write_file(plugin_file, r)
changed = True
# Change file attributes if needed
if os.path.isfile(plugin_file):
params = {
'dest': plugin_file
}
params.update(self.params)
file_args = self.module.load_file_common_arguments(params)
if not self.module.check_mode:
# Not sure how to run this in the check mode
changed = self.module.set_fs_attributes_if_different(
file_args, changed)
else:
# See the comment above
changed = True
return changed
def _download_updates(self):
updates_filename = 'jenkins-plugin-cache.json'
updates_dir = os.path.expanduser('~/.ansible/tmp')
updates_file = "%s/%s" % (updates_dir, updates_filename)
download_updates = True
# Check if we need to download new updates file
if os.path.isfile(updates_file):
# Get timestamp when the file was changed last time
ts_file = os.stat(updates_file).st_mtime
ts_now = time.time()
if ts_now - ts_file < self.params['updates_expiration']:
download_updates = False
updates_file_orig = updates_file
# Download the updates file if needed
if download_updates:
url = "%s/update-center.json" % self.params['updates_url']
# Get the data
r = self._get_url_data(
url,
msg_status="Remote updates not found.",
msg_exception="Updates download failed.")
# Write the updates file
updates_file = tempfile.mktemp()
try:
fd = open(updates_file, 'wb')
except IOError:
e = get_exception()
self.module.fail_json(
msg="Cannot open the tmp updates file %s." % updates_file,
details=str(e))
fd.write(r.read())
try:
fd.close()
except IOError:
e = get_exception()
self.module.fail_json(
msg="Cannot close the tmp updates file %s." % updates_file,
detail=str(e))
# Open the updates file
try:
f = open(updates_file)
except IOError:
e = get_exception()
self.module.fail_json(
msg="Cannot open temporal updates file.",
details=str(e))
i = 0
for line in f:
# Read only the second line
if i == 1:
try:
data = json.loads(line)
except Exception:
e = get_exception()
self.module.fail_json(
msg="Cannot load JSON data from the tmp updates file.",
details=e.message)
break
i += 1
# Move the updates file to the right place if we could read it
if download_updates:
# Make sure the destination directory exists
if not os.path.isdir(updates_dir):
try:
os.makedirs(updates_dir, int('0700', 8))
except OSError:
e = get_exception()
self.module.fail_json(
msg="Cannot create temporal directory.",
details=e.message)
self.module.atomic_move(updates_file, updates_file_orig)
# Check if we have the plugin data available
if 'plugins' not in data or self.params['name'] not in data['plugins']:
self.module.fail_json(
msg="Cannot find plugin data in the updates file.")
return data['plugins'][self.params['name']]
def _download_plugin(self, plugin_url):
# Download the plugin
r = self._get_url_data(
plugin_url,
msg_status="Plugin not found.",
msg_exception="Plugin download failed.")
return r
def _write_file(self, f, data):
# Store the plugin into a temp file and then move it
tmp_f = tempfile.mktemp()
try:
fd = open(tmp_f, 'wb')
except IOError:
e = get_exception()
self.module.fail_json(
msg='Cannot open the temporal plugin file %s.' % tmp_f,
details=str(e))
if isinstance(data, str):
d = data
else:
d = data.read()
fd.write(d)
try:
fd.close()
except IOError:
e = get_exception()
self.module.fail_json(
msg='Cannot close the temporal plugin file %s.' % tmp_f,
details=str(e))
# Move the file onto the right place
self.module.atomic_move(tmp_f, f)
def uninstall(self):
changed = False
# Perform the action
if self.is_installed:
if not self.module.check_mode:
self._pm_query('doUninstall', 'Uninstallation')
changed = True
return changed
def pin(self):
return self._pinning('pin')
def unpin(self):
return self._pinning('unpin')
def _pinning(self, action):
changed = False
# Check if the plugin is pinned/unpinned
if (
action == 'pin' and not self.is_pinned or
action == 'unpin' and self.is_pinned):
# Perform the action
if not self.module.check_mode:
self._pm_query(action, "%sning" % action.capitalize())
changed = True
return changed
def enable(self):
return self._enabling('enable')
def disable(self):
return self._enabling('disable')
def _enabling(self, action):
changed = False
# Check if the plugin is pinned/unpinned
if (
action == 'enable' and not self.is_enabled or
action == 'disable' and self.is_enabled):
# Perform the action
if not self.module.check_mode:
self._pm_query(
"make%sd" % action.capitalize(),
"%sing" % action[:-1].capitalize())
changed = True
return changed
def _pm_query(self, action, msg):
url = "%s/pluginManager/plugin/%s/%s" % (
self.params['url'], self.params['name'], action)
data = urllib.urlencode(self.crumb)
# Send the request
self._get_url_data(
url,
msg_status="Plugin not found. %s" % url,
msg_exception="%s has failed." % msg,
data=data)
def main():
# Module arguments
argument_spec = url_argument_spec()
argument_spec.update(
group=dict(default='jenkins'),
jenkins_home=dict(default='/var/lib/jenkins'),
mode=dict(default='0644', type='raw'),
name=dict(required=True),
owner=dict(default='jenkins'),
params=dict(type='dict'),
state=dict(
choices=[
'present',
'absent',
'pinned',
'unpinned',
'enabled',
'disabled',
'latest'],
default='present'),
timeout=dict(default=30, type="int"),
updates_expiration=dict(default=86400, type="int"),
updates_url=dict(default='https://updates.jenkins-ci.org'),
url=dict(default='http://localhost:8080'),
url_password=dict(no_log=True),
version=dict(),
with_dependencies=dict(default=True, type='bool'),
)
# Module settings
module = AnsibleModule(
argument_spec=argument_spec,
add_file_common_args=True,
supports_check_mode=True,
)
# Update module parameters by user's parameters if defined
if 'params' in module.params and isinstance(module.params['params'], dict):
module.params.update(module.params['params'])
# Remove the params
module.params.pop('params', None)
# Force basic authentication
module.params['force_basic_auth'] = True
# Convert timeout to float
try:
module.params['timeout'] = float(module.params['timeout'])
except ValueError:
e = get_exception()
module.fail_json(
msg='Cannot convert %s to float.' % module.params['timeout'],
details=str(e))
# Set version to latest if state is latest
if module.params['state'] == 'latest':
module.params['state'] = 'present'
module.params['version'] = 'latest'
# Create some shortcuts
name = module.params['name']
state = module.params['state']
# Initial change state of the task
changed = False
# Instantiate the JenkinsPlugin object
jp = JenkinsPlugin(module)
# Perform action depending on the requested state
if state == 'present':
changed = jp.install()
elif state == 'absent':
changed = jp.uninstall()
elif state == 'pinned':
changed = jp.pin()
elif state == 'unpinned':
changed = jp.unpin()
elif state == 'enabled':
changed = jp.enable()
elif state == 'disabled':
changed = jp.disable()
# Print status of the change
module.exit_json(changed=changed, plugin=name, state=state)
if __name__ == '__main__':
main()
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