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# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright 2012 United States Government as represented by the
# Administrator of the National Aeronautics and Space Administration.
# All Rights Reserved.
#
# 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.
"""
Views for managing instances.
"""
import logging
from django.core.urlresolvers import reverse
from django.core.urlresolvers import reverse_lazy
from django import http
from django import shortcuts
from django.utils.datastructures import SortedDict
from django.utils.translation import ugettext_lazy as _
from horizon import exceptions
from horizon import tables
from horizon import tabs
from horizon import workflows
from openstack_dashboard import api
from openstack_dashboard.dashboards.project.instances.tables import \
InstancesTable
from openstack_dashboard.dashboards.project.instances.tabs import \
InstanceDetailTabs
from openstack_dashboard.dashboards.project.instances.workflows import \
LaunchInstance
from openstack_dashboard.dashboards.project.instances.workflows import \
ResizeInstance
from openstack_dashboard.dashboards.project.instances.workflows import \
UpdateInstance
LOG = logging.getLogger(__name__)
class IndexView(tables.DataTableView):
table_class = InstancesTable
template_name = 'project/instances/index.html'
def has_more_data(self, table):
return self._more
def get_data(self):
marker = self.request.GET.get(
InstancesTable._meta.pagination_param, None)
# Gather our instances
try:
instances, self._more = api.nova.server_list(
self.request,
search_opts={'marker': marker,
'paginate': True})
except:
self._more = False
instances = []
exceptions.handle(self.request,
_('Unable to retrieve instances.'))
# Gather our flavors and correlate our instances to them
if instances:
try:
flavors = api.nova.flavor_list(self.request)
except:
flavors = []
exceptions.handle(self.request, ignore=True)
full_flavors = SortedDict([(str(flavor.id), flavor)
for flavor in flavors])
# Loop through instances to get flavor info.
for instance in instances:
try:
flavor_id = instance.flavor["id"]
if flavor_id in full_flavors:
instance.full_flavor = full_flavors[flavor_id]
else:
# If the flavor_id is not in full_flavors list,
# get it via nova api.
instance.full_flavor = api.nova.flavor_get(
self.request, flavor_id)
except:
msg = _('Unable to retrieve instance size information.')
exceptions.handle(self.request, msg)
return instances
class LaunchInstanceView(workflows.WorkflowView):
workflow_class = LaunchInstance
def get_initial(self):
initial = super(LaunchInstanceView, self).get_initial()
initial['project_id'] = self.request.user.tenant_id
initial['user_id'] = self.request.user.id
return initial
def console(request, instance_id):
try:
# TODO(jakedahn): clean this up once the api supports tailing.
tail = request.GET.get('length', None)
data = api.nova.server_console_output(request,
instance_id,
tail_length=tail)
except:
data = _('Unable to get log for instance "%s".') % instance_id
exceptions.handle(request, ignore=True)
response = http.HttpResponse(mimetype='text/plain')
response.write(data)
response.flush()
return response
def vnc(request, instance_id):
try:
console = api.nova.server_vnc_console(request, instance_id)
instance = api.nova.server_get(request, instance_id)
return shortcuts.redirect(console.url +
("&title=%s(%s)" % (instance.name, instance_id)))
except:
redirect = reverse("horizon:project:instances:index")
msg = _('Unable to get VNC console for instance "%s".') % instance_id
exceptions.handle(request, msg, redirect=redirect)
def spice(request, instance_id):
try:
console = api.nova.server_spice_console(request, instance_id)
instance = api.nova.server_get(request, instance_id)
return shortcuts.redirect(console.url +
("&title=%s(%s)" % (instance.name, instance_id)))
except:
redirect = reverse("horizon:project:instances:index")
msg = _('Unable to get SPICE console for instance "%s".') % instance_id
exceptions.handle(request, msg, redirect=redirect)
class UpdateView(workflows.WorkflowView):
workflow_class = UpdateInstance
success_url = reverse_lazy("horizon:project:instances:index")
def get_context_data(self, **kwargs):
context = super(UpdateView, self).get_context_data(**kwargs)
context["instance_id"] = self.kwargs['instance_id']
return context
def get_object(self, *args, **kwargs):
if not hasattr(self, "_object"):
instance_id = self.kwargs['instance_id']
try:
self._object = api.nova.server_get(self.request, instance_id)
except:
redirect = reverse("horizon:project:instances:index")
msg = _('Unable to retrieve instance details.')
exceptions.handle(self.request, msg, redirect=redirect)
return self._object
def get_initial(self):
initial = super(UpdateView, self).get_initial()
initial.update({'instance_id': self.kwargs['instance_id'],
'name': getattr(self.get_object(), 'name', '')})
return initial
class DetailView(tabs.TabView):
tab_group_class = InstanceDetailTabs
template_name = 'project/instances/detail.html'
def get_context_data(self, **kwargs):
context = super(DetailView, self).get_context_data(**kwargs)
context["instance"] = self.get_data()
return context
def get_data(self):
if not hasattr(self, "_instance"):
try:
instance_id = self.kwargs['instance_id']
instance = api.nova.server_get(self.request, instance_id)
instance.volumes = api.nova.instance_volumes_list(self.request,
instance_id)
# Sort by device name
instance.volumes.sort(key=lambda vol: vol.device)
instance.full_flavor = api.nova.flavor_get(
self.request, instance.flavor["id"])
instance.security_groups = api.network.server_security_groups(
self.request, instance_id)
except:
redirect = reverse('horizon:project:instances:index')
exceptions.handle(self.request,
_('Unable to retrieve details for '
'instance "%s".') % instance_id,
redirect=redirect)
self._instance = instance
return self._instance
def get_tabs(self, request, *args, **kwargs):
instance = self.get_data()
return self.tab_group_class(request, instance=instance, **kwargs)
class ResizeView(workflows.WorkflowView):
workflow_class = ResizeInstance
success_url = reverse_lazy("horizon:project:instances:index")
def get_context_data(self, **kwargs):
context = super(ResizeView, self).get_context_data(**kwargs)
context["instance_id"] = self.kwargs['instance_id']
return context
def get_object(self, *args, **kwargs):
if not hasattr(self, "_object"):
instance_id = self.kwargs['instance_id']
try:
self._object = api.nova.server_get(self.request, instance_id)
flavor_id = self._object.flavor['id']
flavors = self.get_flavors()
if flavor_id in flavors:
self._object.flavor_name = flavors[flavor_id].name
else:
flavor = api.nova.flavor_get(self.request, flavor_id)
self._object.flavor_name = flavor.name
except:
redirect = reverse("horizon:project:instances:index")
msg = _('Unable to retrieve instance details.')
exceptions.handle(self.request, msg, redirect=redirect)
return self._object
def get_flavors(self, *args, **kwargs):
if not hasattr(self, "_flavors"):
try:
flavors = api.nova.flavor_list(self.request)
self._flavors = SortedDict([(str(flavor.id), flavor)
for flavor in flavors])
except:
redirect = reverse("horizon:project:instances:index")
exceptions.handle(self.request,
_('Unable to retrieve flavors.'), redirect=redirect)
return self._flavors
def get_initial(self):
initial = super(ResizeView, self).get_initial()
_object = self.get_object()
if _object:
initial.update({'instance_id': self.kwargs['instance_id'],
'old_flavor_id': _object.flavor['id'],
'old_flavor_name': getattr(_object, 'flavor_name', ''),
'flavors': self.get_flavors()})
return initial
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