41dc7b3fad
Allow DNS be the HA resource in leiu of a VIP when using MAAS 2.0. Added an OCF resource dns Added maas_dns.py as the api script to update a MAAS 2.0 DNS resource record. Charmhelpers sync to pull in DNS HA helpers Change-Id: I0b71feec86a77643892fadc08f2954204b541d01
129 lines
4.2 KiB
Python
129 lines
4.2 KiB
Python
# Copyright 2016 Canonical Ltd
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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,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import logging
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from .apidriver import APIDriver
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log = logging.getLogger('vmaas.main')
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class MAASException(Exception):
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pass
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class MAASDriverException(Exception):
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pass
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class MAASClient(object):
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"""
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A wrapper for the python maas client which makes using the API a bit
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more user friendly.
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"""
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def __init__(self, api_url, api_key, **kwargs):
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self.driver = self._get_driver(api_url, api_key, **kwargs)
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def _get_driver(self, api_url, api_key, **kwargs):
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return APIDriver(api_url, api_key)
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def _validate_maas(self):
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try:
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self.driver.validate_maas()
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logging.info("Validated MAAS API")
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return True
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except Exception as e:
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logging.error("MAAS API validation has failed. "
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"Check maas_url and maas_credentials. Error: {}"
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"".format(e))
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return False
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###########################################################################
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# DNS API - http://maas.ubuntu.com/docs2.0/api.html#dnsresource
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###########################################################################
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def get_dnsresources(self):
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"""
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Get a listing of DNS resources which are currently defined.
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:returns: a list of DNS objects
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DNS object is a dictionary of the form:
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{'fqdn': 'keystone.maas',
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'resource_records': [],
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'address_ttl': None,
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'resource_uri': '/MAAS/api/2.0/dnsresources/1/',
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'ip_addresses': [],
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'id': 1}
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"""
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resp = self.driver.get_dnsresources()
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if resp.ok:
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return resp.data
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return []
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def update_dnsresource(self, rid, fqdn, ip_address):
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"""
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Updates a DNS resource with a new ip_address
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:param rid: The dnsresource_id i.e.
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/api/2.0/dnsresources/{dnsresource_id}/
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:param fqdn: The fqdn address to update
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:param ip_address: The ip address to update the A record to point to
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:returns: True if the DNS object was updated, False otherwise.
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"""
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resp = self.driver.update_dnsresource(rid, fqdn, ip_address)
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if resp.ok:
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return True
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return False
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def create_dnsresource(self, fqdn, ip_address, address_ttl=None):
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"""
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Creates a new DNS resource
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:param fqdn: The fqdn address to update
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:param ip_address: The ip address to update the A record to point to
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:param adress_ttl: DNS time to live
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:returns: True if the DNS object was updated, False otherwise.
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"""
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resp = self.driver.create_dnsresource(fqdn, ip_address, address_ttl)
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if resp.ok:
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return True
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return False
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###########################################################################
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# IP API - http://maas.ubuntu.com/docs2.0/api.html#ip-address
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###########################################################################
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def get_ipaddresses(self):
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"""
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Get a list of ip addresses
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:returns: a list of ip address dictionaries
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"""
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resp = self.driver.get_ipaddresses()
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if resp.ok:
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return resp.data
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return []
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def create_ipaddress(self, ip_address, hostname=None):
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"""
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Creates a new IP resource
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:param ip_address: The ip address to register
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:param hostname: the hostname to register at the same time
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:returns: True if the DNS object was updated, False otherwise.
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"""
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resp = self.driver.create_ipaddress(ip_address, hostname)
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if resp.ok:
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return True
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return False
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