89 lines
3.1 KiB
Python
89 lines
3.1 KiB
Python
# Copyright 2012 OpenStack LLC.
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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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from glance.api.v2 import base
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from glance.common import exception
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from glance.common import wsgi
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import glance.registry.db.api
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import glance.store
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import glance.store.filesystem
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import glance.store.http
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import glance.store.rbd
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import glance.store.s3
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import glance.store.swift
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class ImageDataController(base.Controller):
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def __init__(self, conf, db_api=None, store_api=None):
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super(ImageDataController, self).__init__(conf)
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self.db_api = db_api or glance.registry.db.api
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self.db_api.configure_db(conf)
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self.store_api = store_api or glance.store
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self.store_api.create_stores(conf)
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def _get_image(self, context, image_id):
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try:
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return self.db_api.image_get(context, image_id)
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except exception.NotFound:
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raise webob.exc.HTTPNotFound(_("Image does not exist"))
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def upload(self, req, image_id, data, size):
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self._get_image(req.context, image_id)
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try:
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location, size, checksum = self.store_api.add_to_backend(
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'file', image_id, data, size)
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except exception.Duplicate:
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raise webob.exc.HTTPConflict()
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values = {'location': location, 'size': size}
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self.db_api.image_update(req.context, image_id, values)
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def download(self, req, image_id):
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image = self._get_image(req.context, image_id)
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location = image['location']
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if location:
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image_data, image_size = self.store_api.get_from_backend(location)
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return {'data': image_data, 'size': image_size}
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else:
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raise webob.exc.HTTPNotFound(_("No image data could be found"))
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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, result):
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response.headers['Content-Length'] = result['size']
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response.headers['Content-Type'] = 'application/octet-stream'
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response.app_iter = result['data']
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def create_resource(conf):
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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(conf)
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return wsgi.Resource(controller, deserializer, serializer)
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