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# 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.
"""
Views for managing backups.
"""
import operator
from django.urls import reverse
from django.utils.translation import gettext_lazy as _
from horizon import exceptions
from horizon import forms
from horizon import messages
from openstack_dashboard import api
from openstack_dashboard.dashboards.project.containers \
import utils as containers_utils
class CreateBackupForm(forms.SelfHandlingForm):
name = forms.CharField(max_length=255, label=_("Backup Name"))
description = forms.CharField(widget=forms.Textarea(attrs={'rows': 4}),
label=_("Description"),
required=False)
container_name = forms.CharField(
max_length=255,
label=_("Container Name"),
validators=[containers_utils.no_slash_validator],
required=False)
volume_id = forms.CharField(widget=forms.HiddenInput())
snapshot_id = forms.ThemableChoiceField(label=_("Backup Snapshot"),
required=False)
incremental = forms.BooleanField(
label=_("Incremental"),
required=False,
help_text=_("By default, a backup is created as a full backup. "
"Check this to do an incremental backup from latest "
"backup. Only available if a prior backup exists."))
def __init__(self, request, *args, **kwargs):
super().__init__(request, *args, **kwargs)
search_opts = {"volume_id": kwargs['initial']['volume_id'],
"status": "available"}
try:
if not api.cinder.volume_backup_list(request,
search_opts=search_opts):
self.fields.pop('incremental')
except Exception:
# Do not include incremental if list of prior backups fails
self.fields.pop('incremental')
msg = _('Unable to retrieve volume backup list '
'for volume "%s", so incremental '
'backup is disabled.') % search_opts['volume_id']
exceptions.handle(self.request, msg)
if kwargs['initial'].get('snapshot_id'):
snap_id = kwargs['initial']['snapshot_id']
try:
snapshot = api.cinder.volume_snapshot_get(request, snap_id)
self.fields['snapshot_id'].choices = [(snapshot.id,
snapshot.name)]
self.fields['snapshot_id'].initial = snap_id
except Exception:
redirect = reverse('horizon:project:snapshots:index')
exceptions.handle(request, _('Unable to fetch snapshot'),
redirect=redirect)
else:
try:
sop = {'volume_id': kwargs['initial']['volume_id']}
snapshots = api.cinder.volume_snapshot_list(request,
search_opts=sop)
snapshots.sort(key=operator.attrgetter('id', 'created_at'))
snapshotChoices = [[snapshot.id, snapshot.name]
for snapshot in snapshots]
if not snapshotChoices:
snapshotChoices.insert(0, ('',
_("No snapshot for this volume")))
else:
snapshotChoices.insert(
0, ('',
_("Select snapshot to backup (Optional)")))
self.fields['snapshot_id'].choices = snapshotChoices
except Exception:
redirect = reverse('horizon:project:volumes:index')
exceptions.handle(request, _('Unable to fetch snapshots'),
redirect=redirect)
def handle(self, request, data):
try:
volume = api.cinder.volume_get(request, data['volume_id'])
snapshot_id = data['snapshot_id'] or None
force = False
incremental = data.get('incremental', False)
if volume.status == 'in-use':
force = True
backup = api.cinder.volume_backup_create(
request, data['volume_id'],
data['container_name'], data['name'],
data['description'], force=force,
incremental=incremental,
snapshot_id=snapshot_id
)
message = _('Creating volume backup "%s"') % data['name']
messages.info(request, message)
return backup
except Exception:
redirect = reverse('horizon:project:volumes:index')
exceptions.handle(request,
_('Unable to create volume backup.'),
redirect=redirect)
class RestoreBackupForm(forms.SelfHandlingForm):
volume_id = forms.ThemableChoiceField(label=_('Select Volume'),
required=False)
backup_id = forms.CharField(widget=forms.HiddenInput())
backup_name = forms.CharField(widget=forms.HiddenInput())
redirect_url = 'horizon:project:backups:index'
def __init__(self, request, *args, **kwargs):
super().__init__(request, *args, **kwargs)
try:
search_opts = {'status': 'available'}
volumes = api.cinder.volume_list(request, search_opts)
except Exception:
msg = _('Unable to lookup volume or backup information.')
redirect = reverse(self.redirect_url)
exceptions.handle(request, msg, redirect=redirect)
raise exceptions.Http302(redirect)
volumes.sort(key=operator.attrgetter('name', 'created_at'))
choices = [('', _('Create a New Volume'))]
choices.extend((volume.id, volume.name) for volume in volumes)
self.fields['volume_id'].choices = choices
def handle(self, request, data):
backup_id = data['backup_id']
backup_name = data['backup_name'] or None
volume_id = data['volume_id'] or None
try:
restore = api.cinder.volume_backup_restore(request,
backup_id,
volume_id)
# Needed for cases when a new volume is created.
volume_id = restore.volume_id
message = _('Request for restoring backup %(backup_name)s '
'to volume with id: %(volume_id)s '
'has been submitted.')
messages.info(request, message % {'backup_name': backup_name,
'volume_id': volume_id})
return restore
except Exception:
msg = _('Unable to restore backup.')
redirect = reverse(self.redirect_url)
exceptions.handle(request, msg, redirect=redirect)
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