Source code for openstack_dashboard.dashboards.admin.hypervisors.compute.forms

# Licensed under the Apache License, Version 2.0 (the "License"); you may
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#     http://www.apache.org/licenses/LICENSE-2.0
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from django.core.urlresolvers import reverse
from django.utils.translation import ugettext_lazy as _

from horizon import exceptions
from horizon import forms
from horizon import messages

from openstack_dashboard import api


[docs]class EvacuateHostForm(forms.SelfHandlingForm): current_host = forms.CharField(label=_("Current Host"), widget=forms.TextInput( attrs={'readonly': 'readonly'})) target_host = forms.ChoiceField(label=_("Target Host"), help_text=_("Choose a Host to evacuate servers to.")) on_shared_storage = forms.BooleanField(label=_("Shared Storage"), initial=False, required=False) def __init__(self, request, *args, **kwargs): super(EvacuateHostForm, self).__init__(request, *args, **kwargs) initial = kwargs.get('initial', {}) self.fields['target_host'].choices = \ self.populate_host_choices(request, initial)
[docs] def populate_host_choices(self, request, initial): hosts = initial.get('hosts') current_host = initial.get('current_host') host_list = sorted([(host, host) for host in hosts if host != current_host]) if host_list: host_list.insert(0, ("", _("Select a target host"))) else: host_list.insert(0, ("", _("No other hosts available."))) return host_list
[docs] def handle(self, request, data): try: current_host = data['current_host'] target_host = data['target_host'] on_shared_storage = data['on_shared_storage'] api.nova.evacuate_host(request, current_host, target_host, on_shared_storage) msg = _('Starting evacuation from %(current)s to %(target)s.') % \ {'current': current_host, 'target': target_host} messages.success(request, msg) return True except Exception: redirect = reverse('horizon:admin:hypervisors:index') msg = _('Failed to evacuate host: %s.') % data['current_host'] exceptions.handle(request, message=msg, redirect=redirect) return False