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# 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
from django.utils import encoding
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
from openstack_dashboard.dashboards.project.instances \
import utils as instance_utils
from openstack_dashboard.dashboards.project.instances.workflows \
import create_instance
class SetFlavorChoiceAction(workflows.Action):
old_flavor_id = forms.CharField(required=False, widget=forms.HiddenInput())
old_flavor_name = forms.CharField(
label=_("Old Flavor"),
widget=forms.TextInput(attrs={'readonly': 'readonly'}),
required=False,
)
flavor = forms.ThemableChoiceField(
label=_("New Flavor"),
help_text=_("Choose the flavor to launch."))
class Meta(object):
name = _("Flavor Choice")
slug = 'flavor_choice'
help_text_template = ("project/instances/"
"_flavors_and_quotas.html")
def populate_flavor_choices(self, request, context):
old_flavor_name = context.get('old_flavor_name')
flavors = context.get('flavors').values()
# Remove current flavor from the list of flavor choices
flavors = [flavor for flavor in flavors
if flavor.name != old_flavor_name]
if flavors:
if len(flavors) > 1:
flavors = instance_utils.sort_flavor_list(request, flavors)
else:
flavor = flavors[0]
flavors = [(flavor.id, flavor.name)]
flavors.insert(0, ("", _("Select a New Flavor")))
else:
flavors.insert(0, ("", _("No flavors available")))
return flavors
def get_help_text(self, extra_context=None):
extra = {} if extra_context is None else dict(extra_context)
try:
extra['usages'] = api.nova.tenant_absolute_limits(self.request,
reserved=True)
extra['usages_json'] = json.dumps(extra['usages'])
flavors = json.dumps([f._info for f in
instance_utils.flavor_list(self.request)])
extra['flavors'] = flavors
extra['resize_instance'] = True
except Exception:
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", "name")
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 = _('Request for resizing of instance "%s" '
'has been submitted.')
failure_message = _('Unable to resize instance "%s".')
success_url = "horizon:project:instances:index"
default_steps = (SetFlavorChoice, create_instance.SetAdvanced)
def format_status_message(self, message):
if "%s" in message:
return message % self.context.get('name', 'unknown instance')
else:
return message
@sensitive_variables('context')
def handle(self, request, context):
instance_id = context.get('instance_id', None)
flavor = context.get('flavor', None)
disk_config = context.get('disk_config', None)
try:
api.nova.server_resize(request, instance_id, flavor, disk_config)
return True
except Exception as e:
self.failure_message = encoding.force_text(e)
return False
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