# 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.
from django.core.urlresolvers import NoReverseMatch # noqa
from django.core.urlresolvers import reverse
from django.template.defaultfilters import title # noqa
from django.utils import html
from django.utils import safestring
from django.utils.translation import string_concat # noqa
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
from openstack_dashboard import policy
from openstack_dashboard.usage import quotas
DELETABLE_STATES = ("available", "error", "error_extending")
[docs]class DeleteVolume(tables.DeleteAction):
data_type_singular = _("Volume")
data_type_plural = _("Volumes")
action_past = _("Scheduled deletion of %(data_type)s")
policy_rules = (("volume", "volume:delete"),)
[docs] def get_policy_target(self, request, datum=None):
project_id = None
if datum:
project_id = getattr(datum, "os-vol-tenant-attr:tenant_id", None)
return {"project_id": project_id}
[docs] 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 Exception:
msg = _('Unable to delete volume "%s". One or more snapshots '
'depend on it.')
exceptions.check_message(["snapshots", "dependent"], msg % name)
raise
[docs] def allowed(self, request, volume=None):
if volume:
return volume.status in DELETABLE_STATES
return True
[docs]class CreateVolume(tables.LinkAction):
name = "create"
verbose_name = _("Create Volume")
url = "horizon:project:volumes:volumes:create"
classes = ("ajax-modal", "btn-create")
policy_rules = (("volume", "volume:create"),)
[docs] def allowed(self, request, volume=None):
usages = quotas.tenant_quota_usages(request)
if usages['gigabytes']['available'] <= 0 or\
usages['volumes']['available'] <= 0:
if "disabled" not in self.classes:
self.classes = [c for c in self.classes] + ['disabled']
self.verbose_name = string_concat(self.verbose_name, ' ',
_("(Quota exceeded)"))
else:
self.verbose_name = _("Create Volume")
classes = [c for c in self.classes if c != "disabled"]
self.classes = classes
return True
[docs]class ExtendVolume(tables.LinkAction):
name = "extend"
verbose_name = _("Extend Volume")
url = "horizon:project:volumes:volumes:extend"
classes = ("ajax-modal", "btn-extend")
policy_rules = (("volume", "volume:extend"),)
[docs] def get_policy_target(self, request, datum=None):
project_id = None
if datum:
project_id = getattr(datum, "os-vol-tenant-attr:tenant_id", None)
return {"project_id": project_id}
[docs] def allowed(self, request, volume=None):
return volume.status == "available"
[docs]class EditAttachments(tables.LinkAction):
name = "attachments"
verbose_name = _("Edit Attachments")
url = "horizon:project:volumes:volumes:attach"
classes = ("ajax-modal", "btn-edit")
[docs] def allowed(self, request, volume=None):
if volume:
project_id = getattr(volume, "os-vol-tenant-attr:tenant_id", None)
attach_allowed = \
policy.check((("compute", "compute:attach_volume"),),
request,
{"project_id": project_id})
detach_allowed = \
policy.check((("compute", "compute:detach_volume"),),
request,
{"project_id": project_id})
if attach_allowed or detach_allowed:
return volume.status in ("available", "in-use")
return False
[docs]class CreateSnapshot(tables.LinkAction):
name = "snapshots"
verbose_name = _("Create Snapshot")
url = "horizon:project:volumes:volumes:create_snapshot"
classes = ("ajax-modal", "btn-camera")
policy_rules = (("volume", "volume:create_snapshot"),)
[docs] def get_policy_target(self, request, datum=None):
project_id = None
if datum:
project_id = getattr(datum, "os-vol-tenant-attr:tenant_id", None)
return {"project_id": project_id}
[docs] def allowed(self, request, volume=None):
return volume.status in ("available", "in-use")
[docs]class EditVolume(tables.LinkAction):
name = "edit"
verbose_name = _("Edit Volume")
url = "horizon:project:volumes:volumes:update"
classes = ("ajax-modal", "btn-edit")
policy_rules = (("volume", "volume:update"),)
[docs] def get_policy_target(self, request, datum=None):
project_id = None
if datum:
project_id = getattr(datum, "os-vol-tenant-attr:tenant_id", None)
return {"project_id": project_id}
[docs] def allowed(self, request, volume=None):
return volume.status in ("available", "in-use")
[docs]class UpdateRow(tables.Row):
ajax = True
[docs] def get_data(self, request, volume_id):
volume = cinder.volume_get(request, volume_id)
return volume
[docs]def get_size(volume):
return _("%sGB") % volume.size
[docs]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 Exception:
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, html.escape(name))
except NoReverseMatch:
instance = name
return instance
[docs]class AttachmentColumn(tables.Column):
"""Customized column class.
So it that does complex processing on the attachments
for a volume instance.
"""
[docs] 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": html.escape(attachment["device"])}
attachments.append(link % vals)
return safestring.mark_safe(", ".join(attachments))
[docs]def get_volume_type(volume):
return volume.volume_type if volume.volume_type != "None" else None
[docs]class VolumesTableBase(tables.DataTable):
STATUS_CHOICES = (
("in-use", True),
("available", True),
("creating", None),
("error", False),
)
name = tables.Column("name",
verbose_name=_("Name"),
link="horizon:project:volumes:volumes:detail")
description = tables.Column("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)
[docs] def get_object_display(self, obj):
return obj.name
[docs]class VolumesFilterAction(tables.FilterAction):
[docs] 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.name.lower()]
[docs]class VolumesTable(VolumesTableBase):
name = tables.Column("name",
verbose_name=_("Name"),
link="horizon:project:volumes:volumes:detail")
volume_type = tables.Column(get_volume_type,
verbose_name=_("Type"),
empty_value="-")
attachments = AttachmentColumn("attachments",
verbose_name=_("Attached To"))
availability_zone = tables.Column("availability_zone",
verbose_name=_("Availability Zone"))
[docs]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')
policy_rules = (("compute", "compute:detach_volume"),)
[docs] 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)
[docs] def get_success_url(self, request):
return reverse('horizon:project:volumes:index')
[docs]class AttachedInstanceColumn(tables.Column):
"""Customized column class that does complex processing on the attachments
for a volume instance.
"""
[docs] def get_raw_data(self, attachment):
request = self.table.request
return safestring.mark_safe(get_attachment_name(request, attachment))
[docs]class AttachmentsTable(tables.DataTable):
instance = AttachedInstanceColumn(get_attachment_name,
verbose_name=_("Instance"))
device = tables.Column("device",
verbose_name=_("Device"))
[docs] def get_object_id(self, obj):
return obj['id']
[docs] def get_object_display(self, attachment):
instance_name = get_attachment_name(self.request, attachment)
vals = {"dev": attachment['device'],
"instance_name": html.strip_tags(instance_name)}
return _("%(dev)s on instance %(instance_name)s") % vals
[docs] 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)