# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright 2012 Nebula, Inc.
# All rights reserved.
"""
Views for managing Nova volumes.
"""
import logging
from django import shortcuts
from django.contrib import messages
from django.utils.translation import ugettext_lazy as _
from horizon import api
from horizon import forms
from horizon import exceptions
from novaclient import exceptions as novaclient_exceptions
from ..instances.tables import ACTIVE_STATES
LOG = logging.getLogger(__name__)
[docs]class CreateForm(forms.SelfHandlingForm):
name = forms.CharField(max_length="255", label="Volume Name")
description = forms.CharField(widget=forms.Textarea,
label=_("Description"), required=False)
size = forms.IntegerField(min_value=1, label="Size (GB)")
[docs] def handle(self, request, data):
try:
api.volume_create(request, data['size'], data['name'],
data['description'])
message = 'Creating volume "%s"' % data['name']
LOG.info(message)
messages.info(request, message)
except novaclient_exceptions.ClientException, e:
LOG.exception("ClientException in CreateVolume")
messages.error(request,
_('Error Creating Volume: %s') % e.message)
return shortcuts.redirect("horizon:nova:instances_and_volumes:index")
[docs]class AttachForm(forms.SelfHandlingForm):
instance = forms.ChoiceField(label="Attach to Instance",
help_text=_("Select an instance to "
"attach to."))
device = forms.CharField(label="Device Name", initial="/dev/vdc")
def __init__(self, *args, **kwargs):
super(AttachForm, self).__init__(*args, **kwargs)
# populate volume_id
volume_id = kwargs.get('initial', {}).get('volume_id', [])
self.fields['volume_id'] = forms.CharField(widget=forms.HiddenInput(),
initial=volume_id)
# Populate instance choices
instance_list = kwargs.get('initial', {}).get('instances', [])
instances = []
for instance in instance_list:
if instance.status in ACTIVE_STATES:
instances.append((instance.id, '%s (%s)' % (instance.name,
instance.id)))
if instances:
instances.insert(0, ("", _("Select an instance")))
else:
instances = (("", _("No instances available")),)
self.fields['instance'].choices = instances
[docs] def handle(self, request, data):
try:
api.volume_attach(request,
data['volume_id'],
data['instance'],
data['device'])
vol_name = api.volume_get(request, data['volume_id']).display_name
message = (_('Attaching volume %(vol)s to instance '
'%(inst)s at %(dev)s') %
{"vol": vol_name, "inst": data['instance'],
"dev": data['device']})
LOG.info(message)
messages.info(request, message)
except novaclient_exceptions.ClientException, e:
LOG.exception("ClientException in AttachVolume")
messages.error(request,
_('Error attaching volume: %s') % e.message)
return shortcuts.redirect(
"horizon:nova:instances_and_volumes:index")
[docs]class CreateSnapshotForm(forms.SelfHandlingForm):
name = forms.CharField(max_length="255", label=_("Snapshot Name"))
description = forms.CharField(widget=forms.Textarea,
label=_("Description"), required=False)
def __init__(self, *args, **kwargs):
super(CreateSnapshotForm, self).__init__(*args, **kwargs)
# populate volume_id
volume_id = kwargs.get('initial', {}).get('volume_id', [])
self.fields['volume_id'] = forms.CharField(widget=forms.HiddenInput(),
initial=volume_id)
[docs] def handle(self, request, data):
try:
api.volume_snapshot_create(request,
data['volume_id'],
data['name'],
data['description'])
message = _('Creating volume snapshot "%s"') % data['name']
LOG.info(message)
messages.info(request, message)
except:
exceptions.handle(request,
_('Error Creating Volume Snapshot: %(exc)s'))
return shortcuts.redirect("horizon:nova:images_and_snapshots:index")