deb-sahara/sahara/utils/api.py
Trevor McKay d39024a207 Move the savanna subdir to sahara
Rename the subdirectory and replace all instances
of "import savanna" with "import sahara" and all
instances of "from savanna" with "from sahara".

* Replaced mock patches like mock.patch('savanna...
* Updated config generator script
* Renamed entry points in setup.cfg
* Hacking checks also fixed
* Manual renaming in alembic scripts to force work migrations
* Fix doc building
* Renamed itests directories
* Some changes in gitignore
* Removed locale dir after rebase

Co-Authored-By: Alexander Ignatov <aignatov@mirantis.com>

Change-Id: Ia77252c24046c3e7283c0a7b96d11636020b949c
Partially implements: blueprint savanna-renaming-service
2014-03-18 16:38:36 +04:00

252 lines
7.5 KiB
Python

# Copyright (c) 2013 Mirantis 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 traceback
import flask
from werkzeug import datastructures
from sahara import context
from sahara import exceptions as ex
from sahara.openstack.common import log as logging
from sahara.openstack.common import wsgi
LOG = logging.getLogger(__name__)
class Rest(flask.Blueprint):
def get(self, rule, status_code=200):
return self._mroute('GET', rule, status_code)
def post(self, rule, status_code=202):
return self._mroute('POST', rule, status_code)
def post_file(self, rule, status_code=202):
return self._mroute('POST', rule, status_code, file_upload=True)
def put(self, rule, status_code=202):
return self._mroute('PUT', rule, status_code)
def put_file(self, rule, status_code=202):
return self._mroute('PUT', rule, status_code, file_upload=True)
def delete(self, rule, status_code=204):
return self._mroute('DELETE', rule, status_code)
def _mroute(self, methods, rule, status_code=None, **kw):
if type(methods) is str:
methods = [methods]
return self.route(rule, methods=methods, status_code=status_code, **kw)
def route(self, rule, **options):
status = options.pop('status_code', None)
file_upload = options.pop('file_upload', False)
def decorator(func):
endpoint = options.pop('endpoint', func.__name__)
def handler(**kwargs):
context.set_ctx(None)
LOG.debug("Rest.route.decorator.handler, kwargs=%s", kwargs)
_init_resp_type(file_upload)
# update status code
if status:
flask.request.status_code = status
kwargs.pop("tenant_id")
ctx = context.Context(
flask.request.headers['X-User-Id'],
flask.request.headers['X-Tenant-Id'],
flask.request.headers['X-Auth-Token'],
flask.request.headers['X-Service-Catalog'],
flask.request.headers['X-User-Name'],
flask.request.headers['X-Tenant-Name'],
flask.request.headers['X-Roles'].split(','))
context.set_ctx(ctx)
if flask.request.method in ['POST', 'PUT']:
kwargs['data'] = request_data()
try:
return func(**kwargs)
except ex.SaharaException as e:
return bad_request(e)
except Exception as e:
return internal_error(500, 'Internal Server Error', e)
f_rule = "/<tenant_id>" + rule
self.add_url_rule(f_rule, endpoint, handler, **options)
self.add_url_rule(f_rule + '.json', endpoint, handler, **options)
self.add_url_rule(f_rule + '.xml', endpoint, handler, **options)
return func
return decorator
RT_JSON = datastructures.MIMEAccept([("application/json", 1)])
RT_XML = datastructures.MIMEAccept([("application/xml", 1)])
def _init_resp_type(file_upload):
"""Extracts response content type."""
# get content type from Accept header
resp_type = flask.request.accept_mimetypes
# url /foo.xml
if flask.request.path.endswith('.xml'):
resp_type = RT_XML
# url /foo.json
if flask.request.path.endswith('.json'):
resp_type = RT_JSON
flask.request.resp_type = resp_type
# set file upload flag
flask.request.file_upload = file_upload
def render(res=None, resp_type=None, status=None, **kwargs):
if not res:
res = {}
if type(res) is dict:
res.update(kwargs)
elif kwargs:
# can't merge kwargs into the non-dict res
abort_and_log(500, "Non-dict and non-empty kwargs passed to render")
status_code = getattr(flask.request, 'status_code', None)
if status:
status_code = status
if not status_code:
status_code = 200
if not resp_type:
resp_type = getattr(flask.request, 'resp_type', RT_JSON)
if not resp_type:
resp_type = RT_JSON
serializer = None
if "application/json" in resp_type:
resp_type = RT_JSON
serializer = wsgi.JSONDictSerializer()
elif "application/xml" in resp_type:
resp_type = RT_XML
serializer = wsgi.XMLDictSerializer()
else:
abort_and_log(400, "Content type '%s' isn't supported" % resp_type)
body = serializer.serialize(res)
resp_type = str(resp_type)
return flask.Response(response=body, status=status_code,
mimetype=resp_type)
def request_data():
if hasattr(flask.request, 'parsed_data'):
return flask.request.parsed_data
if not flask.request.content_length > 0:
LOG.debug("Empty body provided in request")
return dict()
if flask.request.file_upload:
return flask.request.data
deserializer = None
content_type = flask.request.mimetype
if not content_type or content_type in RT_JSON:
deserializer = wsgi.JSONDeserializer()
elif content_type in RT_XML:
abort_and_log(400, "XML requests are not supported yet")
# deserializer = XMLDeserializer()
else:
abort_and_log(400, "Content type '%s' isn't supported" % content_type)
# parsed request data to avoid unwanted re-parsings
parsed_data = deserializer.deserialize(flask.request.data)['body']
flask.request.parsed_data = parsed_data
return flask.request.parsed_data
def get_request_args():
return flask.request.args
def abort_and_log(status_code, descr, exc=None):
LOG.error("Request aborted with status code %s and message '%s'",
status_code, descr)
if exc is not None:
LOG.error(traceback.format_exc())
flask.abort(status_code, description=descr)
def render_error_message(error_code, error_message, error_name):
message = {
"error_code": error_code,
"error_message": error_message,
"error_name": error_name
}
resp = render(message)
resp.status_code = error_code
return resp
def internal_error(status_code, descr, exc=None):
LOG.error("Request aborted with status code %s and message '%s'",
status_code, descr)
if exc is not None:
LOG.error(traceback.format_exc())
error_code = "INTERNAL_SERVER_ERROR"
if status_code == 501:
error_code = "NOT_IMPLEMENTED_ERROR"
return render_error_message(status_code, descr, error_code)
def bad_request(error):
error_code = 400
LOG.debug("Validation Error occurred: "
"error_code=%s, error_message=%s, error_name=%s",
error_code, error.message, error.code)
return render_error_message(error_code, error.message, error.code)
def not_found(error):
error_code = 404
LOG.debug("Not Found exception occurred: "
"error_code=%s, error_message=%s, error_name=%s",
error_code, error.message, error.code)
return render_error_message(error_code, error.message, error.code)