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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 Swift containers.
"""
import logging
import os
from django import http
from django.core.urlresolvers import reverse
from django.utils.translation import ugettext_lazy as _
from horizon import api
from horizon import exceptions
from horizon import forms
from horizon import tables
from .forms import CreateContainer, UploadObject, CopyObject
from .tables import ContainersTable, ObjectsTable,\
ContainerSubfoldersTable
LOG = logging.getLogger(__name__)
class IndexView(tables.DataTableView):
table_class = ContainersTable
template_name = 'nova/containers/index.html'
def has_more_data(self, table):
return self._more
def get_data(self):
containers = []
self._more = None
marker = self.request.GET.get('marker', None)
try:
containers, self._more = api.swift_get_containers(self.request,
marker=marker)
except:
msg = _('Unable to retrieve container list.')
exceptions.handle(self.request, msg)
return containers
class CreateView(forms.ModalFormView):
form_class = CreateContainer
template_name = 'nova/containers/create.html'
def get_initial(self):
initial = super(CreateView, self).get_initial()
initial['parent'] = self.kwargs['container_name']
return initial
class ObjectIndexView(tables.MultiTableView):
table_classes = (ObjectsTable, ContainerSubfoldersTable)
template_name = 'nova/objects/index.html'
def has_more_data(self, table):
return self._more
@property
def objects(self):
""" Returns a list of objects given the subfolder's path.
The path is from the kwargs of the request
"""
if not hasattr(self, "_objects"):
objects = []
self._more = None
marker = self.request.GET.get('marker', None)
container_name = self.kwargs['container_name']
subfolders = self.kwargs['subfolder_path']
if subfolders:
prefix = subfolders.rstrip("/")
else:
prefix = None
try:
objects, self._more = api.swift_get_objects(self.request,
container_name,
marker=marker,
path=prefix)
except:
objects = []
msg = _('Unable to retrieve object list.')
exceptions.handle(self.request, msg)
self._objects = objects
return self._objects
def get_objects_data(self):
""" Returns the objects within the in the current folder.
These objects are those whose names don't contain '/' after
striped the path out
"""
filtered_objects = [item for item in self.objects if
item.content_type != "application/directory"]
return filtered_objects
def get_subfolders_data(self):
""" Returns a list of subfolders given the current folder path.
"""
filtered_objects = [item for item in self.objects if
item.content_type == "application/directory"]
return filtered_objects
def get_context_data(self, **kwargs):
context = super(ObjectIndexView, self).get_context_data(**kwargs)
context['container_name'] = self.kwargs["container_name"]
context['subfolder_path'] = self.kwargs["subfolder_path"]
return context
class UploadView(forms.ModalFormView):
form_class = UploadObject
template_name = 'nova/objects/upload.html'
def get_initial(self):
return {"container_name": self.kwargs["container_name"],
"path": self.kwargs['subfolder_path']}
def get_context_data(self, **kwargs):
context = super(UploadView, self).get_context_data(**kwargs)
context['container_name'] = self.kwargs["container_name"]
return context
def object_download(request, container_name, object_path):
obj = api.swift.swift_get_object(request, container_name, object_path)
# Add the original file extension back on if it wasn't preserved in the
# name given to the object.
filename = object_path.rsplit("/")[-1]
if not os.path.splitext(obj.name)[1]:
name, ext = os.path.splitext(obj.metadata.get('orig-filename', ''))
filename = "%s%s" % (filename, ext)
try:
object_data = api.swift_get_object_data(request,
container_name,
object_path)
except:
redirect = reverse("horizon:nova:containers:index")
exceptions.handle(request,
_("Unable to retrieve object."),
redirect=redirect)
response = http.HttpResponse()
safe_name = filename.replace(",", "").encode('utf-8')
response['Content-Disposition'] = 'attachment; filename=%s' % safe_name
response['Content-Type'] = 'application/octet-stream'
for data in object_data:
response.write(data)
return response
class CopyView(forms.ModalFormView):
form_class = CopyObject
template_name = 'nova/objects/copy.html'
def get_form_kwargs(self):
kwargs = super(CopyView, self).get_form_kwargs()
try:
containers = api.swift_get_containers(self.request)
except:
redirect = reverse("horizon:nova:containers:index")
exceptions.handle(self.request,
_('Unable to list containers.'),
redirect=redirect)
kwargs['containers'] = [(c.name, c.name) for c in containers[0]]
return kwargs
def get_initial(self):
path = self.kwargs["subfolder_path"]
orig = "%s%s" % (path or '', self.kwargs["object_name"])
return {"new_container_name": self.kwargs["container_name"],
"orig_container_name": self.kwargs["container_name"],
"orig_object_name": orig,
"path": path,
"new_object_name": "%s copy" % self.kwargs["object_name"]}
def get_context_data(self, **kwargs):
context = super(CopyView, self).get_context_data(**kwargs)
context['container_name'] = self.kwargs["container_name"]
context['object_name'] = self.kwargs["object_name"]
return context
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