/
tables.py
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/
tables.py
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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 import template
from django.template.defaultfilters import title
from django.utils.datastructures import SortedDict
from django.utils.translation import ugettext_lazy as _
from horizon import api
from horizon import tables
from horizon.templatetags import sizeformat
LOG = logging.getLogger(__name__)
ACTIVE_STATES = ("ACTIVE",)
POWER_STATES = {
0: "NO STATE",
1: "RUNNING",
2: "BLOCKED",
3: "PAUSED",
4: "SHUTDOWN",
5: "SHUTOFF",
6: "CRASHED",
7: "SUSPENDED",
8: "FAILED",
9: "BUILDING",
}
PAUSE = 0
UNPAUSE = 1
SUSPEND = 0
RESUME = 1
class TerminateInstance(tables.BatchAction):
name = "terminate"
action_present = _("Terminate")
action_past = _("Terminated")
data_type_singular = _("Instance")
data_type_plural = _("Instances")
classes = ('btn-danger', 'btn-terminate')
def action(self, request, obj_id):
api.server_delete(request, obj_id)
class RebootInstance(tables.BatchAction):
name = "reboot"
action_present = _("Reboot")
action_past = _("Rebooted")
data_type_singular = _("Instance")
data_type_plural = _("Instances")
classes = ('btn-danger', 'btn-reboot')
def allowed(self, request, instance=None):
return instance.status in ACTIVE_STATES or instance.status == 'SHUTOFF'
def action(self, request, obj_id):
api.server_reboot(request, obj_id)
class TogglePause(tables.BatchAction):
name = "pause"
action_present = (_("Pause"), _("Unpause"))
action_past = (_("Paused"), _("Unpaused"))
data_type_singular = _("Instance")
data_type_plural = _("Instances")
classes = ("btn-pause")
def allowed(self, request, instance=None):
self.paused = False
if not instance:
return self.paused
self.paused = instance.status == "PAUSED"
if self.paused:
self.current_present_action = UNPAUSE
else:
self.current_present_action = PAUSE
return instance.status in ACTIVE_STATES or self.paused
def action(self, request, obj_id):
if self.paused:
api.server_unpause(request, obj_id)
self.current_past_action = UNPAUSE
else:
api.server_pause(request, obj_id)
self.current_past_action = PAUSE
class ToggleSuspend(tables.BatchAction):
name = "suspend"
action_present = (_("Suspend"), _("Resume"))
action_past = (_("Suspended"), _("Resumed"))
data_type_singular = _("Instance")
data_type_plural = _("Instances")
classes = ("btn-suspend")
def allowed(self, request, instance=None):
self.suspended = False
if not instance:
self.suspended
self.suspended = instance.status == "SUSPENDED"
if self.suspended:
self.current_present_action = RESUME
else:
self.current_present_action = SUSPEND
return instance.status in ACTIVE_STATES or self.suspended
def action(self, request, obj_id):
if self.suspended:
api.server_resume(request, obj_id)
self.current_past_action = RESUME
else:
api.server_suspend(request, obj_id)
self.current_past_action = SUSPEND
class LaunchLink(tables.LinkAction):
name = "launch"
verbose_name = _("Launch Instance")
url = "horizon:nova:images_and_snapshots:index"
classes = ("btn-launch",)
class EditInstance(tables.LinkAction):
name = "edit"
verbose_name = _("Edit Instance")
url = "horizon:nova:instances_and_volumes:instances:update"
classes = ("ajax-modal", "btn-edit")
class SnapshotLink(tables.LinkAction):
name = "snapshot"
verbose_name = _("Snapshot")
url = "horizon:nova:images_and_snapshots:snapshots:create"
classes = ("ajax-modal", "btn-camera")
def allowed(self, request, instance=None):
return instance.status in ACTIVE_STATES
class ConsoleLink(tables.LinkAction):
name = "console"
verbose_name = _("VNC Console")
url = "horizon:nova:instances_and_volumes:instances:vnc"
classes = ("btn-console",)
def allowed(self, request, instance=None):
return instance.status in ACTIVE_STATES
class LogLink(tables.LinkAction):
name = "log"
verbose_name = _("View Log")
url = "horizon:nova:instances_and_volumes:instances:console"
classes = ("btn-log",)
def allowed(self, request, instance=None):
return instance.status in ACTIVE_STATES
class UpdateRow(tables.Row):
ajax = True
def get_data(self, request, instance_id):
instance = api.server_get(request, instance_id)
flavors = api.flavor_list(request)
keyed_flavors = [(str(flavor.id), flavor) for flavor in flavors]
instance.full_flavor = SortedDict(keyed_flavors)[instance.flavor["id"]]
return instance
def get_ips(instance):
template_name = 'nova/instances_and_volumes/instances/_instance_ips.html'
context = {"instance": instance}
return template.loader.render_to_string(template_name, context)
def get_size(instance):
if hasattr(instance, "full_flavor"):
size_string = _("%(RAM)s RAM | %(VCPU)s VCPU | %(disk)s Disk")
vals = {'RAM': sizeformat.mbformat(instance.full_flavor.ram),
'VCPU': instance.full_flavor.vcpus,
'disk': sizeformat.diskgbformat(instance.full_flavor.disk)}
return size_string % vals
return _("Not available")
def get_power_state(instance):
return POWER_STATES.get(getattr(instance, "OS-EXT-STS:power_state", 0), '')
def replace_underscores(string):
return string.replace("_", " ")
class InstancesTable(tables.DataTable):
TASK_STATUS_CHOICES = (
(None, True),
("none", True)
)
STATUS_CHOICES = (
("active", True),
("suspended", True),
("paused", True),
("error", False),
)
name = tables.Column("name", link="horizon:nova:instances_and_volumes:" \
"instances:detail",
verbose_name=_("Instance Name"))
ip = tables.Column(get_ips, verbose_name=_("IP Address"))
size = tables.Column(get_size, verbose_name=_("Size"))
status = tables.Column("status",
filters=(title, replace_underscores),
verbose_name=_("Status"),
status=True,
status_choices=STATUS_CHOICES)
task = tables.Column("OS-EXT-STS:task_state",
verbose_name=_("Task"),
filters=(title, replace_underscores),
status=True,
status_choices=TASK_STATUS_CHOICES)
state = tables.Column(get_power_state,
filters=(title, replace_underscores),
verbose_name=_("Power State"))
class Meta:
name = "instances"
verbose_name = _("Instances")
status_columns = ["status", "task"]
row_class = UpdateRow
table_actions = (LaunchLink, TerminateInstance)
row_actions = (EditInstance, ConsoleLink, LogLink, SnapshotLink,
TogglePause, ToggleSuspend, RebootInstance,
TerminateInstance)