"Fossies" - the Fresh Open Source Software Archive

Member "horizon-16.0.0/openstack_dashboard/dashboards/admin/networks/agents/forms.py" (16 Oct 2019, 3471 Bytes) of package /linux/misc/openstack/horizon-16.0.0.tar.gz:

    1 # Copyright 2014 Kylincloud
    2 #
    3 #    Licensed under the Apache License, Version 2.0 (the "License"); you may
    4 #    not use this file except in compliance with the License. You may obtain
    5 #    a copy of the License at
    6 #
    7 #         http://www.apache.org/licenses/LICENSE-2.0
    8 #
    9 #    Unless required by applicable law or agreed to in writing, software
   10 #    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
   11 #    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
   12 #    License for the specific language governing permissions and limitations
   13 #    under the License.
   14 
   15 from django.urls import reverse
   16 from django.utils.translation import ugettext_lazy as _
   17 
   18 from horizon import exceptions
   19 from horizon import forms
   20 from horizon import messages
   21 
   22 from openstack_dashboard import api
   23 
   24 
   25 class AddDHCPAgent(forms.SelfHandlingForm):
   26     network_id = forms.CharField(widget=forms.HiddenInput())
   27     network_name = forms.CharField(label=_("Network Name"),
   28                                    widget=forms.TextInput(
   29                                    attrs={'readonly': 'readonly'}))
   30     agent = forms.ThemableChoiceField(
   31         label=_("New DHCP Agent"),
   32         help_text=_("Choose an DHCP Agent to attach to."))
   33 
   34     def __init__(self, request, *args, **kwargs):
   35         super(AddDHCPAgent, self).__init__(request, *args, **kwargs)
   36         initial = kwargs.get('initial', {})
   37         self.fields['agent'].choices = self._populate_agent_choices(request,
   38                                                                     initial)
   39 
   40     def _populate_agent_choices(self, request, initial):
   41         network_id = initial.get('network_id')
   42         agents = initial.get('agents')
   43         try:
   44             exist_agents = [agent.id for agent in
   45                             api.neutron.list_dhcp_agent_hosting_networks(
   46                                 request, network_id)]
   47             agent_list = [(agent.id, agent.host) for agent in agents
   48                           if agent.id not in exist_agents]
   49             if agent_list:
   50                 agent_list.insert(0, ("", _("Select a new agent")))
   51             else:
   52                 agent_list.insert(0, ("", _("No other agents available.")))
   53             return agent_list
   54         except Exception:
   55             redirect = reverse('horizon:admin:networks:detail',
   56                                args=(network_id,))
   57             msg = _('Unable to list dhcp agents hosting network.')
   58             exceptions.handle(request, msg, redirect=redirect)
   59 
   60     def handle(self, request, data):
   61         # Get the agent name for message
   62         agent_name = data['agent']
   63         for choice in self.fields['agent'].choices:
   64             if choice[0] == data['agent']:
   65                 agent_name = choice[1]
   66         try:
   67             api.neutron.add_network_to_dhcp_agent(request, data['agent'],
   68                                                   data['network_id'])
   69             msg = _('Agent %s was successfully added.') % agent_name
   70             messages.success(request, msg)
   71             return True
   72         except Exception:
   73             redirect = reverse('horizon:admin:networks:detail',
   74                                args=(data['network_id'],))
   75             msg = _('Failed to add agent %(agent_name)s for '
   76                     'network %(network)s.') \
   77                 % {'agent_name': agent_name,
   78                    'network': data['network_name']}
   79             exceptions.handle(request, msg, redirect=redirect)