165 lines
6.3 KiB
Python
165 lines
6.3 KiB
Python
# Copyright 2012 OpenStack Foundation.
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# All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import webob.exc
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import glance.api.common
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import glance.api.policy
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from glance.common import exception
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from glance.common import utils
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from glance.common import wsgi
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import glance.db
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import glance.domain
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import glance.gateway
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import glance.notifier
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import glance.openstack.common.log as logging
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import glance.store
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LOG = logging.getLogger(__name__)
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class ImageDataController(object):
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def __init__(self, db_api=None, store_api=None,
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policy_enforcer=None, notifier=None,
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gateway=None):
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if gateway is None:
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db_api = db_api or glance.db.get_api()
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db_api.setup_db_env()
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store_api = store_api or glance.store
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policy = policy_enforcer or glance.api.policy.Enforcer()
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notifier = notifier or glance.notifier.Notifier()
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gateway = glance.gateway.Gateway(db_api, store_api,
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notifier, policy)
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self.gateway = gateway
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@utils.mutating
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def upload(self, req, image_id, data, size):
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image_repo = self.gateway.get_repo(req.context)
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try:
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image = image_repo.get(image_id)
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image.status = 'saving'
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image_repo.save(image)
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image.set_data(data, size)
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image_repo.save(image)
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except ValueError as e:
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LOG.debug("Cannot save data for image %s: %s", image_id, e)
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raise webob.exc.HTTPBadRequest(explanation=unicode(e))
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except exception.Duplicate as e:
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msg = (_("Unable to upload duplicate image data for image: %s") %
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image_id)
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LOG.debug(msg)
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raise webob.exc.HTTPConflict(explanation=msg, request=req)
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except exception.Forbidden as e:
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msg = (_("Not allowed to upload image data for image %s") %
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image_id)
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LOG.debug(msg)
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raise webob.exc.HTTPForbidden(explanation=msg, request=req)
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except exception.NotFound as e:
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raise webob.exc.HTTPNotFound(explanation=unicode(e))
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except exception.StorageFull as e:
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msg = _("Image storage media is full: %s") % e
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LOG.error(msg)
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raise webob.exc.HTTPRequestEntityTooLarge(explanation=msg,
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request=req)
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except exception.StorageFull as e:
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msg = _("Image storage media is full: %s") % e
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LOG.error(msg)
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raise webob.exc.HTTPRequestEntityTooLarge(explanation=msg,
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request=req)
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except exception.StorageQuotaFull as e:
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msg = _("Image exceeds the storage quota: %s") % e
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LOG.error(msg)
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raise webob.exc.HTTPRequestEntityTooLarge(explanation=msg,
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request=req)
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except exception.ImageSizeLimitExceeded as e:
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msg = _("The incoming image is too large: %") % e
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LOG.error(msg)
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raise webob.exc.HTTPRequestEntityTooLarge(explanation=msg,
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request=req)
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except exception.StorageWriteDenied as e:
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msg = _("Insufficient permissions on image storage media: %s") % e
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LOG.error(msg)
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raise webob.exc.HTTPServiceUnavailable(explanation=msg,
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request=req)
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except webob.exc.HTTPError as e:
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LOG.error(_("Failed to upload image data due to HTTP error"))
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raise
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except Exception as e:
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LOG.exception(_("Failed to upload image data due to "
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"internal error"))
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raise
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def download(self, req, image_id):
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image_repo = self.gateway.get_repo(req.context)
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try:
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image = image_repo.get(image_id)
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except exception.NotFound as e:
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raise webob.exc.HTTPNotFound(explanation=unicode(e))
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except exception.Forbidden as e:
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raise webob.exc.HTTPForbidden(explanation=unicode(e))
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if not image.locations:
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reason = _("No image data could be found")
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raise webob.exc.HTTPNotFound(reason)
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return image
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class RequestDeserializer(wsgi.JSONRequestDeserializer):
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def upload(self, request):
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try:
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request.get_content_type('application/octet-stream')
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except exception.InvalidContentType:
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raise webob.exc.HTTPUnsupportedMediaType()
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image_size = request.content_length or None
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return {'size': image_size, 'data': request.body_file}
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class ResponseSerializer(wsgi.JSONResponseSerializer):
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def download(self, response, image):
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response.headers['Content-Type'] = 'application/octet-stream'
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# NOTE(markwash): filesystem store (and maybe others?) cause a problem
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# with the caching middleware if they are not wrapped in an iterator
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# very strange
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response.app_iter = iter(image.get_data())
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#NOTE(saschpe): "response.app_iter = ..." currently resets Content-MD5
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# (https://github.com/Pylons/webob/issues/86), so it should be set
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# afterwards for the time being.
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if image.checksum:
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response.headers['Content-MD5'] = image.checksum
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#NOTE(markwash): "response.app_iter = ..." also erroneously resets the
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# content-length
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response.headers['Content-Length'] = str(image.size)
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def upload(self, response, result):
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response.status_int = 204
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def create_resource():
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"""Image data resource factory method"""
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deserializer = RequestDeserializer()
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serializer = ResponseSerializer()
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controller = ImageDataController()
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return wsgi.Resource(controller, deserializer, serializer)
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