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community.general/library/cloud/rax_clb
Matt Martz 772fbb8d0a Updates to rax_clb module
2013-11-07 10:42:15 -06:00

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#!/usr/bin/python -tt
# 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/>.
DOCUMENTATION = '''
---
module: rax_clb
short_description: create / delete a load balancer in Rackspace Public Cloud
description:
- creates / deletes a Rackspace Public Cloud load balancer.
version_added: "1.4"
options:
algorithm:
description:
- algorithm for the balancer being created
choices: ['RANDOM', 'LEAST_CONNECTIONS', 'ROUND_ROBIN', 'WEIGHTED_LEAST_CONNECTIONS', 'WEIGHTED_ROUND_ROBIN']
default: LEAST_CONNECTIONS
api_key:
description:
- Rackspace API key (overrides C(credentials))
credentials:
description:
- File to find the Rackspace credentials in (ignored if C(api_key) and
C(username) are provided)
default: null
aliases: ['creds_file']
meta:
description:
- A hash of metadata to associate with the instance
default: null
name:
description:
- Name to give the load balancer
default: null
port:
description:
- Port for the balancer being created
default: 80
protocol:
description:
- Protocol for the balancer being created
choices: ['DNS_TCP', 'DNS_UDP' ,'FTP', 'HTTP', 'HTTPS', 'IMAPS', 'IMAPv4', 'LDAP', 'LDAPS', 'MYSQL', 'POP3', 'POP3S', 'SMTP', 'TCP', 'TCP_CLIENT_FIRST', 'UDP', 'UDP_STREAM', 'SFTP']
default: HTTP
region:
description:
- Region to create the load balancer in
default: DFW
state:
description:
- Indicate desired state of the resource
choices: ['present', 'absent']
default: present
timeout:
description:
- timeout for communication between the balancer and the node
default: 30
type:
description:
- type of interface for the balancer being created
choices: ['PUBLIC', 'SERVICENET']
default: PUBLIC
username:
description:
- Rackspace username (overrides C(credentials))
wait:
description:
- wait for the balancer to be in state 'running' before returning
default: "no"
choices: [ "yes", "no" ]
wait_timeout:
description:
- how long before wait gives up, in seconds
default: 300
requirements: [ "pyrax" ]
author: Christopher H. Laco, Matt Martz
notes:
- The following environment variables can be used, C(RAX_USERNAME),
C(RAX_API_KEY), C(RAX_CREDS_FILE), C(RAX_CREDENTIALS), C(RAX_REGION).
- C(RAX_CREDENTIALS) and C(RAX_CREDS_FILE) points to a credentials file
appropriate for pyrax. See U(https://github.com/rackspace/pyrax/blob/master/docs/getting_started.md#authenticating)
- C(RAX_USERNAME) and C(RAX_API_KEY) obviate the use of a credentials file
- C(RAX_REGION) defines a Rackspace Public Cloud region (DFW, ORD, LON, ...)
'''
EXAMPLES = '''
- name: Build a Load Balancer
gather_facts: False
hosts: local
connection: local
tasks:
- name: Load Balancer create request
local_action:
module: rax_clb
credentials: ~/.raxpub
name: my-lb
port: 8080
protocol: HTTP
type: SERVICENET
timeout: 30
region: DFW
wait: yes
state: present
meta:
app: my-cool-app
register: my_lb
'''
import sys
import os
from types import NoneType
try:
import pyrax
except ImportError:
print("failed=True msg='pyrax required for this module'")
sys.exit(1)
NON_CALLABLES = (basestring, bool, dict, int, list, NoneType)
ALGORITHMS = ['RANDOM', 'LEAST_CONNECTIONS', 'ROUND_ROBIN',
'WEIGHTED_LEAST_CONNECTIONS', 'WEIGHTED_ROUND_ROBIN']
PROTOCOLS = ['DNS_TCP', 'DNS_UDP', 'FTP', 'HTTP', 'HTTPS', 'IMAPS', 'IMAPv4',
'LDAP', 'LDAPS', 'MYSQL', 'POP3', 'POP3S', 'SMTP', 'TCP',
'TCP_CLIENT_FIRST', 'UDP', 'UDP_STREAM', 'SFTP']
def cloud_load_balancer(module, state, name, meta, algorithm, port, protocol,
vip_type, timeout, wait, wait_timeout):
for arg in (state, name, port, protocol, vip_type):
if not arg:
module.fail_json(msg='%s is required for rax_clb' % arg)
if int(timeout) < 30:
module.fail_json(msg='"timeout" must be greater than or equal to 30')
changed = False
balancers = []
clb = pyrax.cloud_loadbalancers
for balancer in clb.list():
if name != balancer.name and name != balancer.id:
continue
balancers.append(balancer)
if len(balancers) > 1:
module.fail_json(msg='Multiple Load Balancers were matched by name, '
'try using the Load Balancer ID instead')
if state == 'present':
if isinstance(meta, dict):
metadata = [dict(key=k, value=v) for k, v in meta.items()]
if not balancers:
try:
virtual_ips = [clb.VirtualIP(type=vip_type)]
balancer = clb.create(name, metadata=metadata, port=port,
algorithm=algorithm, protocol=protocol,
timeout=timeout, virtual_ips=virtual_ips)
changed = True
except Exception, e:
module.fail_json(msg='%s' % e.message)
else:
balancer = balancers[0]
setattr(balancer, 'metadata',
[dict(key=k, value=v) for k, v in
balancer.get_metadata().items()])
atts = {
'name': name,
'algorithm': algorithm,
'port': port,
'protocol': protocol,
'timeout': timeout
}
for att, value in atts.iteritems():
current = getattr(balancer, att)
if current != value:
changed = True
if changed:
balancer.update(**atts)
if balancer.metadata != metadata:
balancer.set_metadata(meta)
changed = True
virtual_ips = [clb.VirtualIP(type=vip_type)]
current_vip_types = set([v.type for v in balancer.virtual_ips])
vip_types = set([v.type for v in virtual_ips])
if current_vip_types != vip_types:
module.fail_json(msg='Load balancer Virtual IP type cannot '
'be changed')
if wait:
attempts = wait_timeout / 5
print attempts
pyrax.utils.wait_for_build(balancer, interval=5, attempts=attempts)
balancer.get()
instance = {}
for key, value in vars(balancer).iteritems():
if key == 'virtual_ips':
virtual_ips = []
instance[key] = []
for vip in value:
vip_dict = {}
for vip_key, vip_value in vars(vip).iteritems():
if isinstance(vip_value, NON_CALLABLES):
vip_dict[vip_key] = vip_value
instance[key].append(vip_dict)
elif (isinstance(value, NON_CALLABLES) and
not key.startswith('_')):
instance[key] = value
result = dict(changed=changed, balancer=instance)
if balancer.status == 'ERROR':
result['msg'] = '%s failed to build' % balancer.id
elif wait and balancer.status not in ('ACTIVE', 'ERROR'):
result['msg'] = 'Timeout waiting on %s' % balancer.id
if 'msg' in result:
module.fail_json(**result)
else:
module.exit_json(**result)
elif state == 'absent':
if balancers:
balancer = balancers[0]
try:
balancer.delete()
changed = True
except Exception, e:
module.fail_json(msg='%s' % e.message)
instance = {}
for key, value in vars(balancer).iteritems():
if key == 'virtual_ips':
virtual_ips = []
instance[key] = []
for vip in value:
vip_dict = {}
for vip_key, vip_value in vars(vip).iteritems():
if isinstance(vip_value, NON_CALLABLES):
vip_dict[vip_key] = vip_value
instance[key].append(vip_dict)
elif (isinstance(value, NON_CALLABLES) and
not key.startswith('_')):
instance[key] = value
if wait:
attempts = wait_timeout / 5
pyrax.utils.wait_until(balancer, 'status', ('DELETED'),
interval=5, attempts=attempts)
module.exit_json(changed=changed, balancer=instance)
def main():
module = AnsibleModule(
argument_spec=dict(
algorithm=dict(choices=ALGORITHMS, default='LEAST_CONNECTIONS'),
api_key=dict(),
credentials=dict(aliases=['creds_file']),
meta=dict(type='dict', default={}),
name=dict(),
port=dict(type='int', default=80),
protocol=dict(choices=PROTOCOLS, default='HTTP'),
region=dict(),
state=dict(default='present', choices=['present', 'absent']),
timeout=dict(type='int', default=30),
type=dict(choices=['PUBLIC', 'SERVICENET'], default='PUBLIC'),
username=dict(),
wait=dict(type='bool'),
wait_timeout=dict(default=300),
),
)
algorithm = module.params.get('algorithm')
api_key = module.params.get('api_key')
credentials = module.params.get('credentials')
meta = module.params.get('meta')
name = module.params.get('name')
port = module.params.get('port')
protocol = module.params.get('protocol')
region = module.params.get('region')
state = module.params.get('state')
timeout = int(module.params.get('timeout'))
username = module.params.get('username')
vip_type = module.params.get('type')
wait = module.params.get('wait')
wait_timeout = int(module.params.get('wait_timeout'))
try:
username = username or os.environ.get('RAX_USERNAME')
api_key = api_key or os.environ.get('RAX_API_KEY')
credentials = (credentials or os.environ.get('RAX_CREDENTIALS') or
os.environ.get('RAX_CREDS_FILE'))
region = region or os.environ.get('RAX_REGION')
except KeyError, e:
module.fail_json(msg='Unable to load %s' % e.message)
try:
pyrax.set_setting('identity_type', 'rackspace')
if api_key and username:
pyrax.set_credentials(username, api_key=api_key, region=region)
elif credentials:
credentials = os.path.expanduser(credentials)
pyrax.set_credential_file(credentials, region=region)
else:
raise Exception('No credentials supplied!')
except Exception, e:
module.fail_json(msg='%s' % e.message)
cloud_load_balancer(module, state, name, meta, algorithm, port, protocol,
vip_type, timeout, wait, wait_timeout)
from ansible.module_utils.basic import *
main()
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