Source code for openstack_dashboard.dashboards.project.volumes.volumes.tables

# 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.conf import settings
from django.core.urlresolvers import NoReverseMatch  # noqa
from django.core.urlresolvers import reverse
from django.http import HttpResponse  # noqa
from django.template import defaultfilters as filters
from django.utils import html
from django.utils.http import urlencode
from django.utils import safestring
from django.utils.translation import pgettext_lazy
from django.utils.translation import string_concat  # noqa
from django.utils.translation import ugettext_lazy as _
from django.utils.translation import ungettext_lazy

from horizon import exceptions
from horizon import messages
from horizon import tables

from openstack_dashboard import api
from openstack_dashboard.api import cinder
from openstack_dashboard import policy


DELETABLE_STATES = ("available", "error", "error_extending")


[docs]class VolumePolicyTargetMixin(policy.PolicyTargetMixin): policy_target_attrs = (("project_id", 'os-vol-tenant-attr:tenant_id'),)
[docs]class LaunchVolume(tables.LinkAction): name = "launch_volume" verbose_name = _("Launch as Instance") url = "horizon:project:instances:launch" classes = ("ajax-modal", "btn-launch") icon = "cloud-upload" policy_rules = (("compute", "compute:create"),)
[docs] def allowed(self, request, volume=None): if getattr(volume, 'bootable', '') == 'true': return volume.status == "available" return False
[docs]class LaunchVolumeNG(LaunchVolume): name = "launch_volume_ng" verbose_name = _("Launch as Instance") url = "horizon:project:volumes:index" classes = ("btn-launch", ) ajax = False def __init__(self, attrs=None, **kwargs): kwargs['preempt'] = True super(LaunchVolume, self).__init__(attrs, **kwargs)
[docs]class DeleteVolume(VolumePolicyTargetMixin, tables.DeleteAction): @staticmethod
[docs] def action_present(count): return ungettext_lazy( u"Delete Volume", u"Delete Volumes", count )
@staticmethod
[docs] def action_past(count): return ungettext_lazy( u"Scheduled deletion of Volume", u"Scheduled deletion of Volumes", count )
policy_rules = (("volume", "volume:delete"),)
[docs] def delete(self, request, obj_id): cinder.volume_delete(request, obj_id)
[docs] def allowed(self, request, volume=None): if volume: return (volume.status in DELETABLE_STATES and not getattr(volume, 'has_snapshot', False)) return True
[docs]class CreateVolume(tables.LinkAction): name = "create" verbose_name = _("Create Volume") url = "horizon:project:volumes:volumes:create" classes = ("ajax-modal", "btn-create") icon = "plus" policy_rules = (("volume", "volume:create"),) ajax = True def __init__(self, attrs=None, **kwargs): kwargs['preempt'] = True super(CreateVolume, self).__init__(attrs, **kwargs)
[docs] def allowed(self, request, volume=None): limits = api.cinder.tenant_absolute_limits(request) gb_available = (limits.get('maxTotalVolumeGigabytes', float("inf")) - limits.get('totalGigabytesUsed', 0)) volumes_available = (limits.get('maxTotalVolumes', float("inf")) - limits.get('totalVolumesUsed', 0)) if gb_available <= 0 or 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] def single(self, table, request, object_id=None): self.allowed(request, None) return HttpResponse(self.render(is_table_action=True))
[docs]class ExtendVolume(VolumePolicyTargetMixin, 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 allowed(self, request, volume=None): return volume.status == "available"
[docs]class EditAttachments(tables.LinkAction): name = "attachments" verbose_name = _("Manage Attachments") url = "horizon:project:volumes:volumes:attach" classes = ("ajax-modal",) icon = "pencil"
[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(VolumePolicyTargetMixin, tables.LinkAction): name = "snapshots" verbose_name = _("Create Snapshot") url = "horizon:project:volumes:volumes:create_snapshot" classes = ("ajax-modal",) icon = "camera" policy_rules = (("volume", "volume:create_snapshot"),)
[docs] def allowed(self, request, volume=None): try: limits = api.cinder.tenant_absolute_limits(request) except Exception: exceptions.handle(request, _('Unable to retrieve tenant limits.')) limits = {} snapshots_available = (limits.get('maxTotalSnapshots', float("inf")) - limits.get('totalSnapshotsUsed', 0)) if snapshots_available <= 0 and "disabled" not in self.classes: self.classes = [c for c in self.classes] + ['disabled'] self.verbose_name = string_concat(self.verbose_name, ' ', _("(Quota exceeded)")) return volume.status in ("available", "in-use")
[docs]class CreateTransfer(VolumePolicyTargetMixin, tables.LinkAction): name = "create_transfer" verbose_name = _("Create Transfer") url = "horizon:project:volumes:volumes:create_transfer" classes = ("ajax-modal",) policy_rules = (("volume", "volume:create_transfer"),)
[docs] def allowed(self, request, volume=None): return volume.status == "available"
[docs]class CreateBackup(VolumePolicyTargetMixin, tables.LinkAction): name = "backups" verbose_name = _("Create Backup") url = "horizon:project:volumes:volumes:create_backup" classes = ("ajax-modal",) policy_rules = (("volume", "backup:create"),)
[docs] def allowed(self, request, volume=None): return (cinder.volume_backup_supported(request) and volume.status == "available")
[docs]class UploadToImage(VolumePolicyTargetMixin, tables.LinkAction): name = "upload_to_image" verbose_name = _("Upload to Image") url = "horizon:project:volumes:volumes:upload_to_image" classes = ("ajax-modal",) icon = "cloud-upload" policy_rules = (("volume", "volume:upload_to_image"),)
[docs] def allowed(self, request, volume=None): has_image_service_perm = \ request.user.has_perm('openstack.services.image') return (volume.status in ("available", "in-use") and has_image_service_perm)
[docs]class EditVolume(VolumePolicyTargetMixin, tables.LinkAction): name = "edit" verbose_name = _("Edit Volume") url = "horizon:project:volumes:volumes:update" classes = ("ajax-modal",) icon = "pencil" policy_rules = (("volume", "volume:update"),)
[docs] def allowed(self, request, volume=None): return volume.status in ("available", "in-use")
[docs]class RetypeVolume(VolumePolicyTargetMixin, tables.LinkAction): name = "retype" verbose_name = _("Change Volume Type") url = "horizon:project:volumes:volumes:retype" classes = ("ajax-modal",) icon = "pencil" policy_rules = (("volume", "volume:retype"),)
[docs] def allowed(self, request, volume=None): return volume.status in ("available", "in-use")
[docs]class AcceptTransfer(tables.LinkAction): name = "accept_transfer" verbose_name = _("Accept Transfer") url = "horizon:project:volumes:volumes:accept_transfer" classes = ("ajax-modal",) icon = "exchange" policy_rules = (("volume", "volume:accept_transfer"),) ajax = True
[docs] def single(self, table, request, object_id=None): return HttpResponse(self.render())
[docs]class DeleteTransfer(VolumePolicyTargetMixin, tables.Action): # This class inherits from tables.Action instead of the more obvious # tables.DeleteAction due to the confirmation message. When the delete # is successful, DeleteAction automatically appends the name of the # volume to the message, e.g. "Deleted volume transfer 'volume'". But # we are deleting the volume *transfer*, whose name is different. name = "delete_transfer" verbose_name = _("Cancel Transfer") policy_rules = (("volume", "volume:delete_transfer"),) classes = ('btn-danger',) help_text = _("This action cannot be undone.")
[docs] def allowed(self, request, volume): return (volume.status == "awaiting-transfer" and getattr(volume, 'transfer', None))
[docs] def single(self, table, request, volume_id): volume = table.get_object_by_id(volume_id) try: cinder.transfer_delete(request, volume.transfer.id) if volume.transfer.name: msg = _('Successfully deleted volume transfer "%s"' ) % volume.transfer.name else: msg = _("Successfully deleted volume transfer") messages.success(request, msg) except Exception: exceptions.handle(request, _("Unable to delete volume transfer."))
[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 _("%sGiB") % 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 = html.escape(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.get("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]def get_encrypted_value(volume): if not hasattr(volume, 'encrypted') or volume.encrypted is None: return _("-") elif volume.encrypted is False: return _("No") else: return _("Yes")
[docs]class VolumesTableBase(tables.DataTable): STATUS_CHOICES = ( ("in-use", True), ("available", True), ("creating", None), ("error", False), ("error_extending", False), ("maintenance", False), ) STATUS_DISPLAY_CHOICES = ( ("available", pgettext_lazy("Current status of a Volume", u"Available")), ("in-use", pgettext_lazy("Current status of a Volume", u"In-use")), ("error", pgettext_lazy("Current status of a Volume", u"Error")), ("creating", pgettext_lazy("Current status of a Volume", u"Creating")), ("error_extending", pgettext_lazy("Current status of a Volume", u"Error Extending")), ("extending", pgettext_lazy("Current status of a Volume", u"Extending")), ("attaching", pgettext_lazy("Current status of a Volume", u"Attaching")), ("detaching", pgettext_lazy("Current status of a Volume", u"Detaching")), ("deleting", pgettext_lazy("Current status of a Volume", u"Deleting")), ("error_deleting", pgettext_lazy("Current status of a Volume", u"Error deleting")), ("backing-up", pgettext_lazy("Current status of a Volume", u"Backing Up")), ("restoring-backup", pgettext_lazy("Current status of a Volume", u"Restoring Backup")), ("error_restoring", pgettext_lazy("Current status of a Volume", u"Error Restoring")), ("maintenance", pgettext_lazy("Current status of a Volume", u"Maintenance")), ) 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", verbose_name=_("Status"), status=True, status_choices=STATUS_CHOICES, display_choices=STATUS_DISPLAY_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")) attachments = AttachmentColumn("attachments", verbose_name=_("Attached To")) availability_zone = tables.Column("availability_zone", verbose_name=_("Availability Zone")) bootable = tables.Column('is_bootable', verbose_name=_("Bootable"), filters=(filters.yesno, filters.capfirst)) encryption = tables.Column(get_encrypted_value, verbose_name=_("Encrypted"), link="horizon:project:volumes:" "volumes:encryption_detail")
[docs] class Meta(object): name = "volumes" verbose_name = _("Volumes") status_columns = ["status"] row_class = UpdateRow table_actions = (CreateVolume, AcceptTransfer, DeleteVolume, VolumesFilterAction) launch_actions = () if getattr(settings, 'LAUNCH_INSTANCE_LEGACY_ENABLED', False): launch_actions = (LaunchVolume,) + launch_actions if getattr(settings, 'LAUNCH_INSTANCE_NG_ENABLED', True): launch_actions = (LaunchVolumeNG,) + launch_actions row_actions = ((EditVolume, ExtendVolume,) + launch_actions + (EditAttachments, CreateSnapshot, CreateBackup, RetypeVolume, UploadToImage, CreateTransfer, DeleteTransfer, DeleteVolume))
[docs]class DetachVolume(tables.BatchAction): name = "detach" classes = ('btn-danger', 'btn-detach') policy_rules = (("compute", "compute:detach_volume"),) help_text = _("The data will remain in the volume and another instance" " will be able to access the data if you attach" " this volume to it.") @staticmethod
[docs] def action_present(count): return ungettext_lazy( u"Detach Volume", u"Detach Volumes", count ) # This action is asynchronous.
@staticmethod
[docs] def action_past(count): return ungettext_lazy( u"Detaching Volume", u"Detaching Volumes", count )
[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 = {"volume_name": attachment['volume_name'], "instance_name": html.strip_tags(instance_name)} return _("Volume %(volume_name)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)
[docs] class Meta(object): name = "attachments" verbose_name = _("Attachments") table_actions = (DetachVolume,) row_actions = (DetachVolume,)

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