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# ============LICENSE_START====================================================
# org.onap.ccsdk
# =============================================================================
# Copyright (c) 2018 AT&T Intellectual Property. All rights reserved.
# Copyright (c) 2020 Pantheon.tech. All rights reserved.
# =============================================================================
# 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.
# ============LICENSE_END======================================================
import requests
from cloudify import ctx
from cloudify.decorators import operation
from cloudify.exceptions import NonRecoverableError, RecoverableError
def _check_status(resp, msg):
if resp.status_code >= 300:
if resp.status_code >= 500:
raise RecoverableError(msg)
else:
raise NonRecoverableError(msg)
def _get_auth_info(openstack):
if openstack['auth_url'].endswith('/v2.0'):
(tok, gbls, urls) = _get_auth_info_v2(openstack)
else:
(tok, gbls, urls) = _get_auth_info_v3(openstack)
if len(urls) == 1:
reg = list(urls)[0]
else:
reg = openstack['region']
if reg in urls and 'dns' in urls[reg]:
url = urls[reg]['dns']
elif 'dns' in gbls:
url = gbls['dns']
else:
raise NonRecoverableError('DNS service not found')
return { 'osauth': { 'X-Auth-Token': tok }, 'dns': url }
def _get_auth_info_v3(openstack):
domain = openstack['domain'] if 'domain' in openstack else 'default'
resp = requests.post('{0}/auth/tokens'.format(openstack['auth_url']), json={
'auth': {
'identity': {
'methods': [
'password'
],
'password': {
'user': {
'name': openstack['username'],
'domain': {
'id': domain
},
'password': openstack['password']
}
}
},
'scope': {
'project': {
'name': openstack['tenant_name'],
'domain': {
'id': domain
}
}
}
}
})
_check_status(resp, 'Failed to get authorization token from OpenStack identity service v3')
gbls = {}
urls = {}
for sc in resp.json()['token']['catalog']:
type = sc['type']
for ep in sc['endpoints']:
if 'region' in ep and ep['region'] not in urls:
urls[ep['region']] = {}
if ep['interface'] == 'public' and ep['url'] != '':
if 'region' not in ep:
gbls[type] = ep['url']
else:
urls[ep['region']][type] = ep['url']
return (resp.headers['X-Subject-Token'], gbls, urls)
def _get_auth_info_v2(openstack):
resp = requests.post('{0}/tokens'.format(openstack['auth_url']), json={'auth':{'tenantName':openstack['tenant_name'],'passwordCredentials':{'username':openstack['username'], 'password':openstack['password']}}})
_check_status(resp, 'Failed to get authorization token from OpenStack identity service v2')
respj = resp.json()['access']
gbls = {}
urls = {}
for se in respj['serviceCatalog']:
type = se['type']
for ep in se['endpoints']:
if 'region' in ep and ep['region'] not in urls:
urls[ep['region']] = {}
if 'publicURL' in ep and ep['publicURL'] != '':
if 'region' not in ep:
gbls[type] = ep['publicURL']
else:
urls[ep['region']][type] = ep['publicURL']
return (respj['token']['id'], gbls, urls)
def _dot(fqdn):
"""
Append a dot to a fully qualified domain name.
DNS and Designate expect FQDNs to end with a dot, but human's conventionally don't do that.
"""
return '{0}.'.format(fqdn)
def _get_domain(fqdn):
return fqdn[(fqdn.find('.') + 1):]
def _get_zone_id(fqdn, access):
zn = _dot(_get_domain(fqdn))
resp = requests.get('{0}/v2/zones'.format(access['dns']), headers=access['osauth'])
_check_status(resp, 'Failed to list DNS zones')
respj = resp.json()['zones']
for ae in respj:
if ae['name'] == zn:
return ae['id']
raise NonRecoverableError('DNS zone {0} not available for this tenant'.format(zn))
def _find_recordset(fqdn, type, zid, access):
fqdnd = _dot(fqdn)
resp = requests.get('{0}/v2/zones/{1}/recordsets?limit=1000'.format(access['dns'], zid), headers=access['osauth'])
_check_status(resp, 'Failed to list DNS record sets')
respj = resp.json()['recordsets']
for rs in respj:
if rs['type'] == type and rs['name'] == fqdnd:
return rs
return None
@operation
def aneeded(**kwargs):
"""
Create DNS A record, if not already present. Expect args: ip_addresses: [ ... ]
"""
try:
_doneed('A', kwargs['args']['ip_addresses'])
except (NonRecoverableError, RecoverableError) as nre:
raise nre
except Exception as e:
raise NonRecoverableError(e)
@operation
def anotneeded(**kwargs):
"""
Remove DNS A record, if present
"""
_noneed('A')
@operation
def cnameneeded(**kwargs):
"""
Create DNS CNAME record, if not already present. Expect args: cname: '...'
"""
try:
_doneed('CNAME', [ _dot(kwargs['args']['cname']) ] )
except (NonRecoverableError, RecoverableError) as nre:
raise nre
except Exception as e:
raise NonRecoverableError(e)
@operation
def cnamenotneeded(**kwargs):
"""
Remove DNS CNAME record, if present
"""
_noneed('CNAME')
def _doneed(type, records):
"""
Create DNS entries, if not already present
"""
access = _get_auth_info(ctx.node.properties['openstack'])
fqdn = ctx.node.properties['fqdn']
zid = _get_zone_id(fqdn, access)
rs = _find_recordset(fqdn, type, zid, access)
if not rs:
resp = requests.post('{0}/v2/zones/{1}/recordsets'.format(access['dns'], zid), json={ 'name': _dot(fqdn), 'type': type, 'records': records, 'ttl': ctx.node.properties['ttl'] }, headers=access['osauth'])
_check_status(resp, 'Failed to create DNS record set for {0}'.format(fqdn))
else:
resp = requests.put('{0}/v2/zones/{1}/recordsets/{2}'.format(access['dns'], zid, rs['id']), json={ 'records': records, 'ttl': ctx.node.properties['ttl'] }, headers=access['osauth'])
_check_status(resp, 'Failed to update DNS record set for {0}'.format(fqdn))
def _noneed(type):
"""
Remove DNS entries, if present
"""
try:
fqdn = ctx.node.properties['fqdn']
access = _get_auth_info(ctx.node.properties['openstack'])
zid = _get_zone_id(fqdn, access)
rs = _find_recordset(fqdn, type, zid, access)
if rs:
resp = requests.delete('{0}/v2/zones/{1}/recordsets/{2}'.format(access['dns'], zid, rs['id']), headers=access['osauth'])
_check_status(resp, 'Failed to delete DNS record set for {0}'.format(fqdn))
except (NonRecoverableError, RecoverableError) as nre:
raise nre
except Exception as e:
raise NonRecoverableError(e)
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