280 lines
10 KiB
Python
280 lines
10 KiB
Python
# Copyright 2011 Andrew Bogott for the Wikimedia Foundation
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# 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, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import urllib
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from oslo_utils import netutils
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import webob
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from nova.api.openstack import common
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from nova.api.openstack.compute.schemas import floating_ip_dns
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from nova.api.openstack import extensions
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from nova.api.openstack import wsgi
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from nova.api import validation
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from nova import exception
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from nova.i18n import _
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from nova import network
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ALIAS = "os-floating-ip-dns"
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authorize = extensions.os_compute_authorizer(ALIAS)
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def _translate_dns_entry_view(dns_entry):
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result = {}
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result['ip'] = dns_entry.get('ip')
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result['id'] = dns_entry.get('id')
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result['type'] = dns_entry.get('type')
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result['domain'] = dns_entry.get('domain')
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result['name'] = dns_entry.get('name')
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return {'dns_entry': result}
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def _translate_dns_entries_view(dns_entries):
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return {'dns_entries': [_translate_dns_entry_view(entry)['dns_entry']
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for entry in dns_entries]}
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def _translate_domain_entry_view(domain_entry):
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result = {}
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result['domain'] = domain_entry.get('domain')
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result['scope'] = domain_entry.get('scope')
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result['project'] = domain_entry.get('project')
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result['availability_zone'] = domain_entry.get('availability_zone')
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return {'domain_entry': result}
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def _translate_domain_entries_view(domain_entries):
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return {'domain_entries':
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[_translate_domain_entry_view(entry)['domain_entry']
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for entry in domain_entries]}
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def _unquote_domain(domain):
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"""Unquoting function for receiving a domain name in a URL.
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Domain names tend to have .'s in them. Urllib doesn't quote dots,
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but Routes tends to choke on them, so we need an extra level of
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by-hand quoting here.
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"""
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return urllib.unquote(domain).replace('%2E', '.')
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def _create_dns_entry(ip, name, domain):
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return {'ip': ip, 'name': name, 'domain': domain}
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def _create_domain_entry(domain, scope=None, project=None, av_zone=None):
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return {'domain': domain, 'scope': scope, 'project': project,
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'availability_zone': av_zone}
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class FloatingIPDNSDomainController(wsgi.Controller):
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"""DNS domain controller for OpenStack API."""
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def __init__(self):
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super(FloatingIPDNSDomainController, self).__init__()
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self.network_api = network.API(skip_policy_check=True)
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@extensions.expected_errors(501)
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def index(self, req):
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"""Return a list of available DNS domains."""
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context = req.environ['nova.context']
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authorize(context)
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try:
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domains = self.network_api.get_dns_domains(context)
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except NotImplementedError:
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common.raise_feature_not_supported()
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domainlist = [_create_domain_entry(domain['domain'],
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domain.get('scope'),
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domain.get('project'),
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domain.get('availability_zone'))
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for domain in domains]
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return _translate_domain_entries_view(domainlist)
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@extensions.expected_errors((400, 501))
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@validation.schema(floating_ip_dns.domain_entry_update)
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def update(self, req, id, body):
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"""Add or modify domain entry."""
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context = req.environ['nova.context']
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authorize(context, action="domain:update")
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fqdomain = _unquote_domain(id)
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entry = body['domain_entry']
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scope = entry['scope']
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project = entry.get('project', None)
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av_zone = entry.get('availability_zone', None)
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if scope == 'private' and project:
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msg = _("you can not pass project if the scope is private")
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raise webob.exc.HTTPBadRequest(explanation=msg)
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if scope == 'public' and av_zone:
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msg = _("you can not pass av_zone if the scope is public")
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raise webob.exc.HTTPBadRequest(explanation=msg)
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if scope == 'private':
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create_dns_domain = self.network_api.create_private_dns_domain
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area_name, area = 'availability_zone', av_zone
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else:
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create_dns_domain = self.network_api.create_public_dns_domain
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area_name, area = 'project', project
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try:
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create_dns_domain(context, fqdomain, area)
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except NotImplementedError:
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common.raise_feature_not_supported()
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return _translate_domain_entry_view({'domain': fqdomain,
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'scope': scope,
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area_name: area})
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@extensions.expected_errors((404, 501))
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@wsgi.response(202)
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def delete(self, req, id):
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"""Delete the domain identified by id."""
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context = req.environ['nova.context']
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authorize(context, action="domain:delete")
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domain = _unquote_domain(id)
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# Delete the whole domain
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try:
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self.network_api.delete_dns_domain(context, domain)
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except NotImplementedError:
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common.raise_feature_not_supported()
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except exception.NotFound as e:
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raise webob.exc.HTTPNotFound(explanation=e.format_message())
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class FloatingIPDNSEntryController(wsgi.Controller):
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"""DNS Entry controller for OpenStack API."""
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def __init__(self):
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super(FloatingIPDNSEntryController, self).__init__()
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self.network_api = network.API(skip_policy_check=True)
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@extensions.expected_errors((404, 501))
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def show(self, req, domain_id, id):
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"""Return the DNS entry that corresponds to domain_id and id."""
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context = req.environ['nova.context']
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authorize(context)
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domain = _unquote_domain(domain_id)
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floating_ip = None
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# Check whether id is a valid ipv4/ipv6 address.
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if netutils.is_valid_ip(id):
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floating_ip = id
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try:
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if floating_ip:
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entries = self.network_api.get_dns_entries_by_address(context,
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floating_ip,
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domain)
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else:
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entries = self.network_api.get_dns_entries_by_name(context,
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id,
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domain)
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except NotImplementedError:
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common.raise_feature_not_supported()
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if not entries:
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explanation = _("DNS entries not found.")
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raise webob.exc.HTTPNotFound(explanation=explanation)
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if floating_ip:
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entrylist = [_create_dns_entry(floating_ip, entry, domain)
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for entry in entries]
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dns_entries = _translate_dns_entries_view(entrylist)
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return wsgi.ResponseObject(dns_entries)
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entry = _create_dns_entry(entries[0], id, domain)
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return _translate_dns_entry_view(entry)
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@extensions.expected_errors(501)
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@validation.schema(floating_ip_dns.dns_entry_update)
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def update(self, req, domain_id, id, body):
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"""Add or modify dns entry."""
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context = req.environ['nova.context']
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authorize(context)
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domain = _unquote_domain(domain_id)
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name = id
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entry = body['dns_entry']
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address = entry['ip']
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dns_type = entry['dns_type']
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try:
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entries = self.network_api.get_dns_entries_by_name(context,
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name, domain)
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if not entries:
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# create!
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self.network_api.add_dns_entry(context, address, name,
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dns_type, domain)
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else:
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# modify!
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self.network_api.modify_dns_entry(context, name,
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address, domain)
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except NotImplementedError:
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common.raise_feature_not_supported()
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return _translate_dns_entry_view({'ip': address,
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'name': name,
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'type': dns_type,
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'domain': domain})
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@extensions.expected_errors((404, 501))
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@wsgi.response(202)
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def delete(self, req, domain_id, id):
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"""Delete the entry identified by req and id."""
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context = req.environ['nova.context']
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authorize(context)
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domain = _unquote_domain(domain_id)
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name = id
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try:
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self.network_api.delete_dns_entry(context, name, domain)
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except NotImplementedError:
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common.raise_feature_not_supported()
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except exception.NotFound as e:
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raise webob.exc.HTTPNotFound(explanation=e.format_message())
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class FloatingIpDns(extensions.V21APIExtensionBase):
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"""Floating IP DNS support."""
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name = "FloatingIpDns"
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alias = ALIAS
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version = 1
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def get_resources(self):
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resources = []
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res = extensions.ResourceExtension(ALIAS,
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controller=FloatingIPDNSDomainController())
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resources.append(res)
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res = extensions.ResourceExtension('entries',
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controller=FloatingIPDNSEntryController(),
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parent={'member_name': 'domain',
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'collection_name': 'os-floating-ip-dns'})
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resources.append(res)
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return resources
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def get_controller_extensions(self):
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"""It's an abstract function V21APIExtensionBase and the extension
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will not be loaded without it.
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"""
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return []
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