Adding Magnum plugin

Adding Magnum plugin with support for creating, updating,
and deleting Cluster Templates

Change-Id: I6e158001acf9b6d6f924a5459142ee87eba09ff2
This commit is contained in:
Chris Hultin 2016-09-27 15:54:40 -05:00
parent 544adfe686
commit 18bbe27c1a

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#!/usr/bin/env python
# Copyright 2016, Rackspace US, Inc.
#
# 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.
from magnumclient import client as magnum_client
from ansible.module_utils.basic import *
DOCUMENTATION = """
---
module: magnum
version_added: "1.9.4"
short_description:
- Manage OpenStack Magnum Cluster Templates
description:
- Manage OpenStack Magnum Cluster Templates
options:
action:
description:
- Indicate the desired state of the resource
choices: ['template-present', 'template-absent']
required: true
name:
description:
- Name of the resource
required: true
openrc_path:
description:
- Path to OpenRC file
required: true
insecure:
description:
- Explicitly allow client to perform "insecure" TLS
choices:
- false
- true
default: false
keypair:
description:
- Keypair for Cluster Template
required: false
image:
description:
- Image for Cluster Template
required: false
external_network:
description:
- External Network for Cluster Template
required: false
dns_nameserver:
description:
- DNS Nameserver for Cluster Template
required: false
flavor:
description:
- Flavor for Cluster Template
required: false
docker_volume_size:
description:
- Volume size (in GB) for Cluster Template
required: false
coe:
description:
- Container Orchestration Engine for Cluster Template
required: false
public:
description:
- Whether or not Cluster Template should be visible to all users
required: false
requirements: [ python-magnumclient ]
author: Christopher Hultin
"""
EXAMPLES = """
#Create Swarm Template
- magnum:
action: 'template-present'
name: 'swarm-dev-test'
openrc_path: '/root/openrc'
insecure: True
keypair: 'testkey'
image: 'fedora-atomic-latest'
external_network: 'public'
dns_nameserver: '8.8.8.8'
flavor: 'm1.small'
docker_volume_size: 5
coe: 'swarm'
public: 'false'
#Change the DNS Nameserver
- magnum:
action: 'template-present'
name: 'swarm-dev-test'
openrc_path: '/root/openrc'
insecure: True
keypair: 'testkey'
image: 'fedora-atomic-latest'
external_network: 'public'
dns_nameserver: '8.8.4.4'
flavor: 'm1.small'
docker_volume_size: 5
coe: 'swarm'
public: 'false'
#Delete Template
- magnum:
action: 'template-absent'
name: 'swarm-dev-test'
openrc_path: '/root/openrc'
insecure: True
"""
COMMAND_MAP = {
'template-present': 'template_present',
'template-absent': 'template_absent',
}
class ManageMagnum(object):
def __init__(self, module):
self.state_change = False
self.magnum = None
self.module = module
try:
self._init_magnum()
except Exception as e:
self.module.fail_json(
err="Initialisation Error: %s" % e,
rc=2, msg=str(e))
def _parse_openrc(self):
"""Get credentials from an openrc file."""
openrc_path = self.module.params['openrc_path']
line_re = re.compile('^export (?P<key>OS_\w*)=(?P<value>[^\n]*)')
with open(openrc_path) as openrc:
matches = [line_re.match(l) for l in openrc]
return dict(
(g.groupdict()['key'], g.groupdict()['value'])
for g in matches if g
)
def _init_magnum(self):
openrc = self._parse_openrc()
self.magnum = magnum_client.Client(
username=openrc['OS_USERNAME'],
password=openrc['OS_PASSWORD'],
project_name=openrc['OS_PROJECT_NAME'],
auth_url=openrc['OS_AUTH_URL'],
service_type='container-infra',
insecure=self.module.params['insecure'],
user_domain_name=openrc['OS_USER_DOMAIN_NAME'],
project_domain_name=openrc['OS_PROJECT_DOMAIN_NAME']
)
def route(self):
"""Run the command specified by the command parameter."""
getattr(self, COMMAND_MAP[self.module.params['action']])()
def template_present(self):
p = self.module.params
template_name = p['name']
template_opts = dict(
name=template_name,
image_id=p['image'],
keypair_id=p['keypair'],
external_network_id=p['external_network'],
dns_nameserver=p['dns_nameserver'],
flavor_id=p['flavor'],
docker_volume_size=p['docker_volume_size'],
coe=p['coe'],
public=p['public']
)
template_found = False
updates = []
for template in self.magnum.cluster_templates.list(detail=True):
if template.name == template_name:
template_found = True
if not template_found:
try:
self.magnum.cluster_templates.create(**template_opts)
except Exception as e:
self.module.fail_json(
msg="Failed to create template: {}".format(e)
)
self.state_change = True
self.module.exit_json(
changed=self.state_change
)
else:
try:
for opt, val in template_opts.iteritems():
if (val != getattr(template, opt) and
val is not None):
updates.append({opt: val})
except Exception as e:
self.module.fail_json(
msg="Error: Parameters are undefined: {}".format(e)
)
if len(updates) >= 1:
try:
self.magnum.cluster_templates.update(template_name, updates)
except Exception as e:
self.module.fail_json(
msg="Failed to update template: {}".format(e)
)
self.state_change = True
else:
self.state_change = False
self.module.exit_json(
changed=self.state_change
)
def template_absent(self):
p = self.module.params
template_name = p['name']
for template in self.magnum.cluster_templates.list(detail=True):
if template.name == template_name:
try:
self.magnum.cluster_templates.delete(template_name)
except Exception as e:
self.module.fail_json(
msg="Failed to delete template: {}".format(e)
)
self.state_change = True
self.module.exit_json(
changed=self.state_change
)
def main():
module = AnsibleModule(
argument_spec={
"name": {"required": True, "type": "str"},
"image": {"required": False, "type": "str"},
"keypair": {"required": False, "type": "str"},
"external_network": {"required": False, "type": "str"},
"dns_nameserver": {"required": False, "type": "str"},
"flavor": {"required": False, "type": "str"},
"docker_volume_size": {"required": False, "type": "int"},
"coe": {"required": False, "type": "str"},
"public": {"required": False, "type": "bool"},
"openrc_path": {"required": True, "type": "str"},
"insecure": {"required": False, "default": False, "type": "bool"},
"action": {
"choices": ['template-present', 'template-absent',
'cluster-present', 'cluster-absent'],
"type": "str"
},
},
supports_check_mode=False
)
mg = ManageMagnum(module)
mg.route()
if __name__ == '__main__':
main()