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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 django.conf.urls.defaults import patterns
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from django.db import transaction
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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 import api
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from snf_django.lib.api import faults, utils
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from synnefo.api import util
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from synnefo import quotas
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from synnefo.db.models import Network, FloatingIP
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from logging import getLogger
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log = getLogger(__name__)
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urlpatterns = patterns(
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'synnefo.api.floating_ips',
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(r'^(?:/|.json|.xml)?$', 'demux'),
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(r'^/(\w+)(?:.json|.xml)?$', 'floating_ip_demux'),
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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_floating_ips(request)
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elif request.method == 'POST':
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return allocate_floating_ip(request)
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else:
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return api.method_not_allowed(request)
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def floating_ip_demux(request, floating_ip_id):
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if request.method == 'GET':
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return get_floating_ip(request, floating_ip_id)
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elif request.method == 'DELETE':
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return release_floating_ip(request, floating_ip_id)
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else:
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return api.method_not_allowed(request)
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def ip_to_dict(floating_ip):
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machine_id = floating_ip.machine_id
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return {"fixed_ip": None,
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"id": str(floating_ip.id),
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"instance_id": str(machine_id) if machine_id else None,
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"ip": floating_ip.ipv4,
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"pool": str(floating_ip.network_id)}
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@api.api_method(http_method="GET", user_required=True, logger=log)
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def list_floating_ips(request):
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"""Return user reserved floating IPs"""
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log.debug("list_floating_ips")
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userid = request.user_uniq
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floating_ips = FloatingIP.objects.filter(userid=userid, deleted=False)\
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.order_by("id")
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floating_ips = map(ip_to_dict, floating_ips)
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request.serialization = "json"
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data = json.dumps({"floating_ips": floating_ips})
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return HttpResponse(data, status=200)
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@api.api_method(http_method="GET", user_required=True, logger=log)
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def get_floating_ip(request, floating_ip_id):
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"""Return information for a floating IP."""
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userid = request.user_uniq
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try:
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floating_ip = FloatingIP.objects.get(id=floating_ip_id,
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deleted=False,
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userid=userid)
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except FloatingIP.DoesNotExist:
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raise faults.ItemNotFound("Floating IP '%s' does not exist" %
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floating_ip_id)
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request.serialization = "json"
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data = json.dumps({"floating_ip": ip_to_dict(floating_ip)})
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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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@transaction.commit_manually
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def allocate_floating_ip(request):
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"""Allocate a floating IP."""
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req = utils.get_request_dict(request)
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log.info('allocate_floating_ip %s', req)
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userid = request.user_uniq
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try:
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pool = req['pool']
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except KeyError:
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raise faults.BadRequest("Malformed request. Missing"
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" 'pool' attribute")
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try:
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network = Network.objects.get(public=True, deleted=False, id=pool)
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except Network.DoesNotExist:
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raise faults.ItemNotFound("Pool '%s' does not exist." % pool)
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try:
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address = util.get_network_free_address(network)
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floating_ip = FloatingIP.objects.create(ipv4=address, network=network,
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userid=userid)
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quotas.issue_and_accept_commission(floating_ip)
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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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log.info("User '%s' allocated floating IP '%s", userid, floating_ip)
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request.serialization = "json"
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data = json.dumps({"floating_ip": ip_to_dict(floating_ip)})
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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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@transaction.commit_on_success
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def release_floating_ip(request, floating_ip_id):
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"""Release a floating IP."""
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userid = request.user_uniq
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log.info("release_floating_ip '%s'. User '%s'.", floating_ip_id, userid)
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try:
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floating_ip = FloatingIP.objects.select_for_update()\
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.get(id=floating_ip_id,
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deleted=False,
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userid=userid)
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except FloatingIP.DoesNotExist:
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raise faults.ItemNotFound("Floating IP '%s' does not exist" %
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floating_ip_id)
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if floating_ip.in_use():
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msg = "Floating IP '%s' is used" % floating_ip.id
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raise faults.Conflict(message=msg)
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try:
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floating_ip.network.release_address(floating_ip.ipv4)
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floating_ip.deleted = True
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quotas.issue_and_accept_commission(floating_ip, delete=True)
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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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floating_ip.delete()
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transaction.commit()
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log.info("User '%s' released IP '%s", userid, floating_ip)
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return HttpResponse(status=204)
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