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# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright 2012 Nebula, 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 logging
from django.core.urlresolvers import NoReverseMatch
from django.core.urlresolvers import reverse
from django.template.defaultfilters import title
from django.utils.html import strip_tags
from django.utils import safestring
from django.utils.translation import ugettext_lazy as _
from horizon import exceptions
from horizon import tables
from openstack_dashboard import api
from openstack_dashboard.api import cinder
LOG = logging.getLogger(__name__)
DELETABLE_STATES = ("available", "error")
class DeleteVolume(tables.DeleteAction):
data_type_singular = _("Volume")
data_type_plural = _("Volumes")
action_past = _("Scheduled deletion of")
def delete(self, request, obj_id):
obj = self.table.get_object_by_id(obj_id)
name = self.table.get_object_display(obj)
try:
cinder.volume_delete(request, obj_id)
except:
msg = _('Unable to delete volume "%s". One or more snapshots '
'depend on it.')
exceptions.check_message(["snapshots", "dependent"], msg % name)
raise
def allowed(self, request, volume=None):
if volume:
return volume.status in DELETABLE_STATES
return True
class CreateVolume(tables.LinkAction):
name = "create"
verbose_name = _("Create Volume")
url = "horizon:project:volumes:create"
classes = ("ajax-modal", "btn-create")
class EditAttachments(tables.LinkAction):
name = "attachments"
verbose_name = _("Edit Attachments")
url = "horizon:project:volumes:attach"
classes = ("ajax-modal", "btn-edit")
def allowed(self, request, volume=None):
return volume.status in ("available", "in-use")
class CreateSnapshot(tables.LinkAction):
name = "snapshots"
verbose_name = _("Create Snapshot")
url = "horizon:project:volumes:create_snapshot"
classes = ("ajax-modal", "btn-camera")
def allowed(self, request, volume=None):
return volume.status == "available"
class UpdateRow(tables.Row):
ajax = True
def get_data(self, request, volume_id):
volume = cinder.volume_get(request, volume_id)
if not volume.display_name:
volume.display_name = volume_id
return volume
def get_size(volume):
return _("%sGB") % volume.size
def get_attachment_name(request, attachment):
server_id = attachment.get("server_id", None)
if "instance" in attachment and attachment['instance']:
name = attachment["instance"].name
else:
try:
server = api.nova.server_get(request, server_id)
name = server.name
except:
name = None
exceptions.handle(request, _("Unable to retrieve "
"attachment information."))
try:
url = reverse("horizon:project:instances:detail", args=(server_id,))
instance = '<a href="%s">%s</a>' % (url, name)
except NoReverseMatch:
instance = name
return instance
class AttachmentColumn(tables.Column):
"""
Customized column class that does complex processing on the attachments
for a volume instance.
"""
def get_raw_data(self, volume):
request = self.table.request
link = _('Attached to %(instance)s on %(dev)s')
attachments = []
# Filter out "empty" attachments which the client returns...
for attachment in [att for att in volume.attachments if att]:
# When a volume is attached it may return the server_id
# without the server name...
instance = get_attachment_name(request, attachment)
vals = {"instance": instance,
"dev": attachment["device"]}
attachments.append(link % vals)
return safestring.mark_safe(", ".join(attachments))
def get_volume_type(volume):
return volume.volume_type if volume.volume_type != "None" else None
class VolumesTableBase(tables.DataTable):
STATUS_CHOICES = (
("in-use", True),
("available", True),
("creating", None),
("error", False),
)
name = tables.Column("display_name",
verbose_name=_("Name"),
link="horizon:project:volumes:detail")
description = tables.Column("display_description",
verbose_name=_("Description"),
truncate=40)
size = tables.Column(get_size,
verbose_name=_("Size"),
attrs={'data-type': 'size'})
status = tables.Column("status",
filters=(title,),
verbose_name=_("Status"),
status=True,
status_choices=STATUS_CHOICES)
def get_object_display(self, obj):
return obj.display_name
class VolumesFilterAction(tables.FilterAction):
def filter(self, table, volumes, filter_string):
""" Naive case-insensitive search. """
q = filter_string.lower()
return [volume for volume in volumes
if q in volume.display_name.lower()]
class VolumesTable(VolumesTableBase):
name = tables.Column("display_name",
verbose_name=_("Name"),
link="horizon:project:volumes:detail")
volume_type = tables.Column(get_volume_type,
verbose_name=_("Type"),
empty_value="-")
attachments = AttachmentColumn("attachments",
verbose_name=_("Attached To"))
class Meta:
name = "volumes"
verbose_name = _("Volumes")
status_columns = ["status"]
row_class = UpdateRow
table_actions = (CreateVolume, DeleteVolume, VolumesFilterAction)
row_actions = (EditAttachments, CreateSnapshot, DeleteVolume)
class DetachVolume(tables.BatchAction):
name = "detach"
action_present = _("Detach")
action_past = _("Detaching") # This action is asynchronous.
data_type_singular = _("Volume")
data_type_plural = _("Volumes")
classes = ('btn-danger', 'btn-detach')
def action(self, request, obj_id):
attachment = self.table.get_object_by_id(obj_id)
api.nova.instance_volume_detach(request,
attachment.get('server_id', None),
obj_id)
def get_success_url(self, request):
return reverse('horizon:project:volumes:index')
class AttachedInstanceColumn(tables.Column):
"""
Customized column class that does complex processing on the attachments
for a volume instance.
"""
def get_raw_data(self, attachment):
request = self.table.request
return safestring.mark_safe(get_attachment_name(request, attachment))
class AttachmentsTable(tables.DataTable):
instance = AttachedInstanceColumn(get_attachment_name,
verbose_name=_("Instance"))
device = tables.Column("device")
def get_object_id(self, obj):
return obj['id']
def get_object_display(self, attachment):
instance_name = get_attachment_name(self.request, attachment)
vals = {"dev": attachment['device'],
"instance_name": strip_tags(instance_name)}
return _("%(dev)s on instance %(instance_name)s") % vals
def get_object_by_id(self, obj_id):
for obj in self.data:
if self.get_object_id(obj) == obj_id:
return obj
raise ValueError('No match found for the id "%s".' % obj_id)
class Meta:
name = "attachments"
table_actions = (DetachVolume,)
row_actions = (DetachVolume,)
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