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# Copyright 2014 Rackspace
#
# 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 oslo_log import log as logging
from proboscis.asserts import assert_equal
from proboscis.asserts import assert_true
from proboscis.asserts import fail
from trove.dns import driver
LOG = logging.getLogger(__name__)
ENTRIES = {}
class FakeDnsDriver(driver.DnsDriver):
def create_entry(self, entry, content):
"""Pretend to create a DNS entry somewhere.
Since nothing else tests that this works, there's nothing more to do
here.
"""
entry.content = content
assert_true(entry.name not in ENTRIES)
LOG.debug("Adding fake DNS entry for hostname %s.", entry.name)
ENTRIES[entry.name] = entry
def delete_entry(self, name, type, dns_zone=None):
LOG.debug("Deleting fake DNS entry for hostname %s", name)
ENTRIES.pop(name, None)
class FakeDnsInstanceEntryFactory(driver.DnsInstanceEntryFactory):
def create_entry(self, instance_id):
# Construct hostname using pig-latin.
hostname = "%s-lay" % instance_id
LOG.debug("Mapping instance_id %(id)s to hostname %(host)s",
{'id': instance_id, 'host': hostname})
return driver.DnsEntry(name=hostname, content=None,
type="A", ttl=42, dns_zone=None)
class FakeDnsChecker(object):
"""Used by tests to make sure a DNS record was written in fake mode."""
def __call__(self, mgmt_instance):
"""
Given an instance ID and ip address, confirm that the proper DNS
record was stored in Designate or some other DNS system.
"""
entry = FakeDnsInstanceEntryFactory().create_entry(mgmt_instance.id)
# Confirm DNS entry shown to user is what we expect.
assert_equal(entry.name, mgmt_instance.hostname)
hostname = entry.name
for i in ENTRIES:
print(i)
print("\t%s" % ENTRIES[i])
assert_true(hostname in ENTRIES,
"Hostname %s not found in DNS entries!" % hostname)
entry = ENTRIES[hostname]
# See if the ip address assigned to the record is what we expect.
# This isn't perfect, but for Fake Mode its good enough. If we
# really want to know exactly what it should be then we should restore
# the ability to return the IP from the API as well as a hostname,
# since that lines up to the DnsEntry's content field.
ip_addresses = mgmt_instance.server['addresses']
for network_name, ip_list in ip_addresses.items():
for ip in ip_list:
if entry.content == ip['addr']:
return
fail("Couldn't find IP address %s among these values: %s"
% (entry.content, ip_addresses))
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