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# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright 2013 CentRin Data, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import json
import logging
from django.utils.translation import ugettext_lazy as _
from django.views.decorators.debug import sensitive_variables
from horizon import exceptions
from horizon import forms
from horizon import workflows
from openstack_dashboard import api
LOG = logging.getLogger(__name__)
class SetFlavorChoiceAction(workflows.Action):
old_flavor_id = forms.CharField(required=False, widget=forms.HiddenInput())
old_flavor_name = forms.CharField(label=_("Old Flavor"),
required=False,
widget=forms.TextInput(
attrs={'readonly': 'readonly'}
))
flavor = forms.ChoiceField(label=_("New Flavor"),
required=True,
help_text=_("Choose the flavor to launch."))
class Meta:
name = _("Flavor Choice")
slug = 'flavor_choice'
help_text_template = ("project/instances/"
"_flavors_and_quotas.html")
def clean(self):
cleaned_data = super(SetFlavorChoiceAction, self).clean()
flavor = cleaned_data.get('flavor', None)
if flavor is None or flavor == cleaned_data['old_flavor_id']:
raise forms.ValidationError(_('Please choose a new flavor that '
'can not be same as the old one.'))
return cleaned_data
def populate_flavor_choices(self, request, context):
flavors = context.get('flavors')
flavor_list = [(flavor.id, '%s' % flavor.name)
for flavor in flavors.values()]
if flavor_list:
flavor_list.insert(0, ("", _("Select an New Flavor")))
else:
flavor_list.insert(0, ("", _("No flavors available.")))
return sorted(flavor_list)
def get_help_text(self):
extra = {}
try:
extra['usages'] = api.nova.tenant_absolute_limits(self.request)
extra['usages_json'] = json.dumps(extra['usages'])
flavors = json.dumps([f._info for f in
api.nova.flavor_list(self.request)])
extra['flavors'] = flavors
except:
exceptions.handle(self.request,
_("Unable to retrieve quota information."))
return super(SetFlavorChoiceAction, self).get_help_text(extra)
class SetFlavorChoice(workflows.Step):
action_class = SetFlavorChoiceAction
depends_on = ("instance_id",)
contributes = ("old_flavor_id", "old_flavor_name", "flavors", "flavor")
class ResizeInstance(workflows.Workflow):
slug = "resize_instance"
name = _("Resize Instance")
finalize_button_name = _("Resize")
success_message = _('Resized instance "%s".')
failure_message = _('Unable to resize instance "%s".')
success_url = "horizon:project:instances:index"
default_steps = (SetFlavorChoice,)
def format_status_message(self, message):
return message % self.context.get('name', 'unknown instance')
@sensitive_variables('context')
def handle(self, request, context):
instance_id = context.get('instance_id', None)
flavor = context.get('flavor', None)
try:
api.nova.server_resize(request, instance_id, flavor)
return True
except:
exceptions.handle(request)
return False
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