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