root / snf-cyclades-app / synnefo / neutron / subnet_views.py @ 0dae1b9f
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# Copyright 2013 GRNET S.A. All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or
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# without modification, are permitted provided that the following
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# conditions are met:
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#
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# 1. Redistributions of source code must retain the above
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# copyright notice, this list of conditions and the following
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# disclaimer.
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#
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# 2. Redistributions in binary form must reproduce the above
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# copyright notice, this list of conditions and the following
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# disclaimer in the documentation and/or other materials
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# provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
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# OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
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# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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# USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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#
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# The views and conclusions contained in the software and
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# documentation are those of the authors and should not be
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# interpreted as representing official policies, either expressed
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# or implied, of GRNET S.A.
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from logging import getLogger |
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from snf_django.lib import api |
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from snf_django.lib.api import faults |
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from django.http import HttpResponse |
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from django.utils import simplejson as json |
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from snf_django.lib.api import utils |
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from models import Subnet, Network |
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from synnefo.logic import networks |
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from ipaddr import IPv4Network, IPv6Network |
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log = getLogger(__name__) |
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def demux(request): |
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if request.method == 'GET': |
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return list_subnets(request)
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elif request.method == 'POST': |
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return create_subnet(request)
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else:
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return api.api_method_not_allowed(request)
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def subnet_demux(request, sub_id): |
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if request.method == 'GET': |
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return get_subnet(request, sub_id)
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elif request.method == 'DELETE': |
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return delete_subnet(request, sub_id)
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elif request.method == 'PUT': |
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return update_subnet(request, sub_id)
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else:
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return api.api_method_not_allowed(request)
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@api.api_method(http_method='GET', user_required=True, logger=log) |
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def list_subnets(request): |
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'''List all subnets of a user'''
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log.debug('list_subnets')
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user_subnets = Subnet.objects.filter(network__userid=request.user_uniq) |
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subnets_dict = [subnet_to_dict(sub) |
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for sub in user_subnets.order_by('id')] |
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data = json.dumps({'subnets': subnets_dict})
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return HttpResponse(data, status=200) |
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@api.api_method(http_method='POST', user_required=True, logger=log) |
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def create_subnet(request): |
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'''Create a subnet'''
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dictionary = utils.get_request_dict(request) |
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log.info('create subnet %s', dictionary)
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user_id = request.user_uniq |
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try:
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subnet = dictionary['subnet']
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network_id = subnet['network_id']
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cidr = subnet['cidr']
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except KeyError: |
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raise api.faults.BadRequest("Malformed request") |
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try:
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network = Network.objects.get(id=network_id) |
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except Network.DoesNotExist:
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raise api.faults.ItemNotFound("No networks found with that id") |
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if user_id != network.userid:
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raise api.faults.Unauthorized("Unauthorized operation") |
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ipversion = subnet.get('ip_version', 4) |
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if ipversion not in [4, 6]: |
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raise api.faults.BadRequest("Malformed IP version type") |
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dhcp = subnet.get('enable_dhcp', True) |
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if dhcp not in [True, False]: |
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raise api.faults.BadRequest("Malformed request, enable_dhcp must be " |
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"True or False")
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name = subnet.get('name', None) |
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if len(str(name)) > Subnet.SUBNET_NAME_LENGTH: |
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raise api.faults.BadRequest("Subnet name too long") |
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# Returns the first available IP in the subnet
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if ipversion == 6: |
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potential_gateway = IPv6Network(cidr).network + 1
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check_number_of_subnets(network, 6)
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else:
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potential_gateway = IPv4Network(cidr).network + 1
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check_number_of_subnets(network, 4)
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gateway = subnet.get('gateway_ip', potential_gateway)
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networks.validate_network_params(cidr, gateway) |
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# FIX ME
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try:
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sub = Subnet.objects.create(name=name, network=network, cidr=cidr, |
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ipversion=ipversion, gateway=gateway, |
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dhcp=dhcp) |
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except:
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return "Error" |
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return HttpResponse(sub, status=200) |
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@api.api_method(http_method='GET', user_required=True, logger=log) |
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def get_subnet(request, sub_id): |
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'''Show info of a specific subnet'''
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log.debug('get_subnet %s', sub_id)
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user_id = request.user_uniq |
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try:
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subnet = Subnet.objects.get(id=sub_id) |
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except Subnet.DoesNotExist:
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raise api.faults.ItemNotFound("Subnet not found") |
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if subnet.network.userid != user_id:
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raise api.failts.Unauthorized("You're not allowed to view this subnet") |
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subnet_dict = subnet_to_dict(subnet) |
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data = json.dumps({'subnet': subnet_dict})
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return HttpResponse(data, status=200) |
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@api.api_method(http_method='DELETE', user_required=True, logger=log) |
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def delete_subnet(request, sub_id): |
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'''Delete a subnet -- Operation not allowed'''
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raise api.faults.BadRequest("Deletion of a subnet is not supported") |
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@api.api_method(http_method='PUT', user_required=True, logger=log) |
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def update_subnet(request, sub_id): |
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'''Update info of a subnet'''
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def subnet_to_dict(subnet): |
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'''Returns a dictionary containing the info of a subnet'''
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# FIX ME, allocation pools
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dictionary = dict({'id': subnet.id, 'network_id': subnet.network.id, |
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'name': subnet.name, 'tenant_id': subnet.network.userid, |
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'gateway_ip': subnet.gateway,
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'ip_version': subnet.ipversion, 'cidr': subnet.cidr, |
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'enable_dhcp': subnet.dhcp, 'dns_nameservers': [], |
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'host_routes': [], 'allocation_pools': []}) |
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return dictionary
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def check_number_of_subnets(network, version): |
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'''Checks if a user can add a subnet in a network'''
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if network.subnet_set.filter(ipversion=version):
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raise api.faults.BadRequest("Only one subnet of IPv4/IPv6 per " |
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"network is allowed")
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