root / snf-cyclades-app / synnefo / api / networks.py @ 9ae613af
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# Copyright 2011-2012 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 django.conf.urls.defaults import patterns |
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from django.conf import settings |
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from django.db.models import Q |
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from django.db import transaction |
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from django.http import HttpResponse |
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from django.template.loader import render_to_string |
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from django.utils import simplejson as json |
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from synnefo.api import util |
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from synnefo.api.actions import network_actions |
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from synnefo.api.common import method_not_allowed |
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from synnefo.api.faults import (ServiceUnavailable, BadRequest, Forbidden, |
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NetworkInUse, OverLimit) |
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from synnefo import quotas |
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from synnefo.db.models import Network |
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from synnefo.db.pools import EmptyPool |
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from synnefo.logic import backend |
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log = getLogger('synnefo.api')
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urlpatterns = patterns( |
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'synnefo.api.networks',
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(r'^(?:/|.json|.xml)?$', 'demux'), |
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(r'^/detail(?:.json|.xml)?$', 'list_networks', {'detail': True}), |
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(r'^/(\w+)(?:.json|.xml)?$', 'network_demux'), |
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(r'^/(\w+)/action(?:.json|.xml)?$', 'network_action'), |
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) |
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def demux(request): |
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if request.method == 'GET': |
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return list_networks(request)
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elif request.method == 'POST': |
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return create_network(request)
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else:
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return method_not_allowed(request)
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def network_demux(request, network_id): |
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if request.method == 'GET': |
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return get_network_details(request, network_id)
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elif request.method == 'PUT': |
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return update_network_name(request, network_id)
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elif request.method == 'DELETE': |
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return delete_network(request, network_id)
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else:
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return method_not_allowed(request)
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def network_to_dict(network, user_id, detail=True): |
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d = {'id': str(network.id), 'name': network.name} |
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if detail:
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d['cidr'] = network.subnet
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d['cidr6'] = network.subnet6
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d['gateway'] = network.gateway
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d['gateway6'] = network.gateway6
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d['dhcp'] = network.dhcp
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d['type'] = network.flavor
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d['updated'] = util.isoformat(network.updated)
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d['created'] = util.isoformat(network.created)
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d['status'] = network.state
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d['public'] = network.public
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attachments = [util.construct_nic_id(nic) |
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for nic in network.nics.filter(machine__userid=user_id) |
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.order_by('machine')]
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d['attachments'] = {'values': attachments} |
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return d
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def render_network(request, networkdict, status=200): |
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if request.serialization == 'xml': |
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data = render_to_string('network.xml', {'network': networkdict}) |
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else:
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data = json.dumps({'network': networkdict})
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return HttpResponse(data, status=status)
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@util.api_method('GET') |
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def list_networks(request, detail=False): |
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# Normal Response Codes: 200, 203
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# Error Response Codes: computeFault (400, 500),
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# serviceUnavailable (503),
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# unauthorized (401),
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# badRequest (400),
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# overLimit (413)
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log.debug('list_networks detail=%s', detail)
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since = util.isoparse(request.GET.get('changes-since'))
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user_networks = Network.objects.filter(Q(userid=request.user_uniq) | |
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Q(public=True))
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if since:
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user_networks = user_networks.filter(updated__gte=since) |
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if not user_networks: |
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return HttpResponse(status=304) |
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else:
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user_networks = user_networks.filter(deleted=False)
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networks = [network_to_dict(network, request.user_uniq, detail) |
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for network in user_networks.order_by('id')] |
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if request.serialization == 'xml': |
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data = render_to_string('list_networks.xml', {
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'networks': networks,
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'detail': detail})
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else:
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data = json.dumps({'networks': {'values': networks}}) |
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return HttpResponse(data, status=200) |
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@util.api_method('POST') |
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@quotas.uses_commission
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@transaction.commit_manually
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def create_network(serials, request): |
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# Normal Response Code: 202
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# Error Response Codes: computeFault (400, 500),
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# serviceUnavailable (503),
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# unauthorized (401),
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# badMediaType(415),
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# badRequest (400),
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# forbidden (403)
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# overLimit (413)
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try:
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req = util.get_request_dict(request) |
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log.info('create_network %s', req)
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try:
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d = req['network']
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name = d['name']
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# TODO: Fix this temp values:
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subnet = d.get('cidr', '192.168.1.0/24') |
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subnet6 = d.get('cidr6', None) |
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gateway = d.get('gateway', None) |
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gateway6 = d.get('gateway6', None) |
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flavor = d.get('type', 'MAC_FILTERED') |
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public = d.get('public', False) |
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dhcp = d.get('dhcp', True) |
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except (KeyError, ValueError): |
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raise BadRequest('Malformed request.') |
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if public:
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raise Forbidden('Can not create a public network.') |
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if flavor not in Network.FLAVORS.keys(): |
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raise BadRequest("Invalid network flavors %s" % flavor) |
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if flavor not in settings.API_ENABLED_NETWORK_FLAVORS: |
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raise Forbidden("Can not create %s network" % flavor) |
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# Check that user provided a valid subnet
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util.validate_network_params(subnet, gateway, subnet6, gateway6) |
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user_id = request.user_uniq |
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serial = quotas.issue_network_commission(user_id) |
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serials.append(serial) |
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# Make the commission accepted, since in the end of this
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# transaction the Network will have been created in the DB.
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serial.accepted = True
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serial.save() |
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try:
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mode, link, mac_prefix, tags = util.values_from_flavor(flavor) |
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network = Network.objects.create( |
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name=name, |
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userid=user_id, |
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subnet=subnet, |
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subnet6=subnet6, |
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gateway=gateway, |
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gateway6=gateway6, |
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dhcp=dhcp, |
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flavor=flavor, |
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mode=mode, |
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link=link, |
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mac_prefix=mac_prefix, |
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tags=tags, |
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action='CREATE',
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state='PENDING',
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serial=serial) |
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except EmptyPool:
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log.error("Failed to allocate resources for network of type: %s",
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flavor) |
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raise ServiceUnavailable("Failed to allocate network resources") |
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# Create BackendNetwork entries for each Backend
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network.create_backend_network() |
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except:
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transaction.rollback() |
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raise
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else:
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transaction.commit() |
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# Create the network in the actual backends
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backend.create_network(network) |
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networkdict = network_to_dict(network, request.user_uniq) |
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response = render_network(request, networkdict, status=202)
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return response
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@util.api_method('GET') |
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def get_network_details(request, network_id): |
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# Normal Response Codes: 200, 203
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# Error Response Codes: computeFault (400, 500),
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# serviceUnavailable (503),
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# unauthorized (401),
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# badRequest (400),
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# itemNotFound (404),
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# overLimit (413)
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log.debug('get_network_details %s', network_id)
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net = util.get_network(network_id, request.user_uniq) |
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netdict = network_to_dict(net, request.user_uniq) |
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return render_network(request, netdict)
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@util.api_method('PUT') |
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def update_network_name(request, network_id): |
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# Normal Response Code: 204
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# Error Response Codes: computeFault (400, 500),
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# serviceUnavailable (503),
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# unauthorized (401),
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# badRequest (400),
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# forbidden (403)
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# badMediaType(415),
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# itemNotFound (404),
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# overLimit (413)
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req = util.get_request_dict(request) |
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log.info('update_network_name %s', network_id)
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try:
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name = req['network']['name'] |
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except (TypeError, KeyError): |
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raise BadRequest('Malformed request.') |
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net = util.get_network(network_id, request.user_uniq) |
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if net.public:
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raise Forbidden('Can not rename the public network.') |
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if net.deleted:
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raise Network.DeletedError
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net.name = name |
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net.save() |
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return HttpResponse(status=204) |
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@util.api_method('DELETE') |
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@transaction.commit_on_success
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def delete_network(request, network_id): |
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# Normal Response Code: 204
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# Error Response Codes: computeFault (400, 500),
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# serviceUnavailable (503),
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# unauthorized (401),
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# forbidden (403)
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# itemNotFound (404),
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# overLimit (413)
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log.info('delete_network %s', network_id)
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net = util.get_network(network_id, request.user_uniq, for_update=True)
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if net.public:
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raise Forbidden('Can not delete the public network.') |
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if net.deleted:
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raise Network.DeletedError
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if net.machines.all(): # Nics attached on network |
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raise NetworkInUse('Machines are connected to network.') |
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net.action = 'DESTROY'
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net.save() |
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backend.delete_network(net) |
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return HttpResponse(status=204) |
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@util.api_method('POST') |
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def network_action(request, network_id): |
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req = util.get_request_dict(request) |
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log.debug('network_action %s %s', network_id, req)
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if len(req) != 1: |
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raise BadRequest('Malformed request.') |
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net = util.get_network(network_id, request.user_uniq) |
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if net.public:
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raise Forbidden('Can not modify the public network.') |
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if net.deleted:
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raise Network.DeletedError
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try:
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key = req.keys()[0]
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val = req[key] |
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assert isinstance(val, dict) |
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return network_actions[key](request, net, req[key])
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except KeyError: |
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raise BadRequest('Unknown action.') |
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except AssertionError: |
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raise BadRequest('Invalid argument.') |