# -*- coding: utf-8 -*-
from __future__ import unicode_literals
from django.shortcuts import render
from django.http import HttpResponseRedirect
from django.shortcuts import render, get_object_or_404
from django.utils.translation import ugettext_lazy as _
from django.core.urlresolvers import reverse
from django.contrib.auth.decorators import login_required
from computes.models import Compute
from vrtManager import util
from vrtManager.nwfilters import wvmNWFilters, wvmNWFilter
from vrtManager.instance import wvmInstances, wvmInstance
from libvirt import libvirtError
from logs.views import addlogmsg
@login_required
def nwfilters(request, compute_id):
"""
:param request:
:return:
"""
if not request.user.is_superuser:
return HttpResponseRedirect(reverse('index'))
error_messages = []
nwfilters_all = []
compute = get_object_or_404(Compute, pk=compute_id)
try:
conn = wvmNWFilters(compute.hostname,
compute.login,
compute.password,
compute.type)
if request.method == 'POST':
if 'create_nwfilter' in request.POST:
xml = request.POST.get('nwfilter_xml', '')
if xml:
try:
util.etree.fromstring(xml)
name = util.get_xml_path(xml, '/filter/@name')
uuid = util.get_xml_path(xml, '/filter/uuid')
except util.etree.ParseError:
name = None
for nwf in nwfilters:
if name == nwf.name():
error_msg = _("A network filter with this name already exists")
raise Exception(error_msg)
if uuid == nwf.UUIDString():
error_msg = _("A network filter with this uuid already exists")
raise Exception(error_msg)
else:
try:
msg = _("Creating NWFilter: %s" % name)
conn.create_nwfilter(xml)
addlogmsg(request.user.username, compute.hostname, msg)
except libvirtError as lib_err:
error_messages.append(lib_err.message)
addlogmsg(request.user.username, compute.hostname, lib_err.message)
if 'del_nwfilter' in request.POST:
name = request.POST.get('nwfiltername','')
msg = _("Deleting NWFilter: %s" % name)
in_use = False
nwfilter = conn.get_nwfilter(name)
is_conn = wvmInstances(compute.hostname, compute.login, compute.password, compute.type)
instances = is_conn.get_instances()
for inst in instances:
# if in_use: break
i_conn = wvmInstance(compute.hostname, compute.login, compute.password, compute.type, inst)
dom_filterrefs = i_conn.get_filterrefs()
if name in dom_filterrefs:
in_use = True
msg = _("NWFilter is in use by %s. Cannot be deleted." % inst)
error_messages.append(msg)
addlogmsg(request.user.username, compute.hostname, msg)
i_conn.close()
break
is_conn.close()
if nwfilter and not in_use:
nwfilter.undefine()
addlogmsg(request.user.username, compute.hostname, msg)
if 'cln_nwfilter' in request.POST:
name = request.POST.get('nwfiltername','')
cln_name = request.POST.get('cln_name', name + '-clone')
conn.clone_nwfilter(name,cln_name)
msg = _("Cloning NWFilter %s as %s" % (name, cln_name))
addlogmsg(request.user.username, compute.hostname, msg)
for nwf in conn.get_nwfilters():
nwfilters_all.append(conn.get_nwfilter_info(nwf))
conn.close()
except libvirtError as lib_err:
error_messages.append(lib_err)
addlogmsg(request.user.username, compute.hostname, lib_err)
except Exception as err:
error_messages.append(err)
addlogmsg(request.user.username, compute.hostname, err)
return render(request, 'nwfilters.html', {'error_messages': error_messages,
'nwfilters': nwfilters_all,
'compute': compute})
@login_required
def nwfilter(request, compute_id, nwfltr):
error_messages = []
nwfilters_all = []
compute = get_object_or_404(Compute, pk=compute_id)
try:
nwfilter = wvmNWFilter(compute.hostname,
compute.login,
compute.password,
compute.type,
nwfltr)
conn = wvmNWFilters(compute.hostname,
compute.login,
compute.password,
compute.type)
for nwf in conn.get_nwfilters():
nwfilters_all.append(conn.get_nwfilter_info(nwf))
uuid = nwfilter.get_uuid()
name = nwfilter.get_name()
xml = nwfilter.get_xml()
rules = nwfilter.get_rules()
refs = nwfilter.get_filter_refs()
if request.method == 'POST':
if 'edit_nwfilter' in request.POST:
new_xml = request.POST.get('edit_xml', '')
if new_xml:
nwfilter.delete()
try:
conn.create_nwfilter(new_xml)
except libvirtError as lib_err:
conn.create_nwfilter(xml)
raise libvirtError(lib_err)
if 'del_nwfilter_rule' in request.POST:
action = request.POST.get('action', '')
direction = request.POST.get('direction', '')
priority = request.POST.get('priority', '')
new_xml = nwfilter.delete_rule(action, direction, priority)
nwfilter.delete()
try:
conn.create_nwfilter(new_xml)
except libvirtError as lib_err:
conn.create_nwfilter(xml)
raise libvirtError(lib_err)
if 'del_nwfilter_ref' in request.POST:
ref_name = request.POST.get('ref')
new_xml = nwfilter.delete_ref(ref_name)
nwfilter.delete()
try:
conn.create_nwfilter(new_xml)
except libvirtError as lib_err:
conn.create_nwfilter(xml)
raise libvirtError(lib_err)
if 'add_nwfilter_rule' in request.POST:
rule_xml = request.POST.get('nwfilterrule_xml', '')
if not rule_xml:
return HttpResponseRedirect(request.get_full_path())
new_xml = nwfilter.add_rule(rule_xml)
nwfilter.delete()
try:
conn.create_nwfilter(new_xml)
except libvirtError as lib_err:
conn.create_nwfilter(xml)
raise libvirtError(lib_err)
if 'add_nwfilter_ref' in request.POST:
ref_name = request.POST.get('nwfilters_select', '')
if not ref_name:
return HttpResponseRedirect(request.get_full_path())
new_xml = nwfilter.add_ref(ref_name)
nwfilter.delete()
try:
conn.create_nwfilter(new_xml)
except libvirtError as lib_err:
conn.create_nwfilter(xml)
raise libvirtError(lib_err)
return HttpResponseRedirect(request.get_full_path())
conn.close()
nwfilter.close()
except libvirtError as lib_err:
error_messages.append(lib_err)
except Exception as error_msg:
error_messages.append(error_msg)
return render(request, 'nwfilter.html', locals())