334 lines
13 KiB
Python
334 lines
13 KiB
Python
# Copyright (c) 2019 Rackspace, 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 copy
|
|
import falcon
|
|
from oslo_log import log as logging
|
|
import six
|
|
|
|
from zaqar.common import decorators
|
|
from zaqar.i18n import _
|
|
from zaqar.storage import errors as storage_errors
|
|
from zaqar.transport import acl
|
|
from zaqar.transport import utils
|
|
from zaqar.transport import validation
|
|
from zaqar.transport.wsgi import errors as wsgi_errors
|
|
from zaqar.transport.wsgi import utils as wsgi_utils
|
|
|
|
LOG = logging.getLogger(__name__)
|
|
|
|
|
|
def _get_reserved_metadata(validate):
|
|
_reserved_metadata = ['max_messages_post_size', 'default_message_ttl',
|
|
'default_message_delay']
|
|
reserved_metadata = {
|
|
'_%s' % meta:
|
|
validate.get_limit_conf_value(meta)
|
|
for meta in _reserved_metadata
|
|
}
|
|
|
|
return reserved_metadata
|
|
|
|
|
|
class ItemResource(object):
|
|
|
|
__slots__ = ('_validate', '_topic_controller', '_message_controller',
|
|
'_reserved_metadata')
|
|
|
|
def __init__(self, validate, topic_controller, message_controller):
|
|
self._validate = validate
|
|
self._topic_controller = topic_controller
|
|
self._message_controller = message_controller
|
|
|
|
@decorators.TransportLog("Topics item")
|
|
@acl.enforce("topics:get")
|
|
def on_get(self, req, resp, project_id, topic_name):
|
|
try:
|
|
resp_dict = self._topic_controller.get(topic_name,
|
|
project=project_id)
|
|
for meta, value in _get_reserved_metadata(self._validate).items():
|
|
if not resp_dict.get(meta):
|
|
resp_dict[meta] = value
|
|
except storage_errors.DoesNotExist as ex:
|
|
LOG.debug(ex)
|
|
raise wsgi_errors.HTTPNotFound(six.text_type(ex))
|
|
|
|
except Exception as ex:
|
|
LOG.exception(ex)
|
|
description = _(u'Topic metadata could not be retrieved.')
|
|
raise wsgi_errors.HTTPServiceUnavailable(description)
|
|
|
|
resp.body = utils.to_json(resp_dict)
|
|
# status defaults to 200
|
|
|
|
@decorators.TransportLog("Topics item")
|
|
@acl.enforce("topics:create")
|
|
def on_put(self, req, resp, project_id, topic_name):
|
|
try:
|
|
# Place JSON size restriction before parsing
|
|
self._validate.queue_metadata_length(req.content_length)
|
|
# Deserialize Topic metadata
|
|
metadata = None
|
|
if req.content_length:
|
|
document = wsgi_utils.deserialize(req.stream,
|
|
req.content_length)
|
|
metadata = wsgi_utils.sanitize(document)
|
|
self._validate.queue_metadata_putting(metadata)
|
|
except validation.ValidationFailed as ex:
|
|
LOG.debug(ex)
|
|
raise wsgi_errors.HTTPBadRequestAPI(six.text_type(ex))
|
|
|
|
try:
|
|
created = self._topic_controller.create(topic_name,
|
|
metadata=metadata,
|
|
project=project_id)
|
|
|
|
except storage_errors.FlavorDoesNotExist as ex:
|
|
LOG.exception(ex)
|
|
raise wsgi_errors.HTTPBadRequestAPI(six.text_type(ex))
|
|
except Exception as ex:
|
|
LOG.exception(ex)
|
|
description = _(u'Topic could not be created.')
|
|
raise wsgi_errors.HTTPServiceUnavailable(description)
|
|
|
|
resp.status = falcon.HTTP_201 if created else falcon.HTTP_204
|
|
resp.location = req.path
|
|
|
|
@decorators.TransportLog("Topics item")
|
|
@acl.enforce("topics:delete")
|
|
def on_delete(self, req, resp, project_id, topic_name):
|
|
LOG.debug(u'Topic item DELETE - topic: %(topic)s, '
|
|
u'project: %(project)s',
|
|
{'topic': topic_name, 'project': project_id})
|
|
try:
|
|
self._topic_controller.delete(topic_name, project=project_id)
|
|
|
|
except Exception as ex:
|
|
LOG.exception(ex)
|
|
description = _(u'Topic could not be deleted.')
|
|
raise wsgi_errors.HTTPServiceUnavailable(description)
|
|
|
|
resp.status = falcon.HTTP_204
|
|
|
|
@decorators.TransportLog("Topics item")
|
|
@acl.enforce("topics:update")
|
|
def on_patch(self, req, resp, project_id, topic_name):
|
|
"""Allows one to update a topic's metadata.
|
|
|
|
This method expects the user to submit a JSON object. There is also
|
|
strict format checking through the use of
|
|
jsonschema. Appropriate errors are returned in each case for
|
|
badly formatted input.
|
|
|
|
:returns: HTTP | 200,400,409,503
|
|
"""
|
|
LOG.debug(u'PATCH topic - name: %s', topic_name)
|
|
|
|
try:
|
|
# Place JSON size restriction before parsing
|
|
self._validate.queue_metadata_length(req.content_length)
|
|
except validation.ValidationFailed as ex:
|
|
LOG.debug(ex)
|
|
raise wsgi_errors.HTTPBadRequestBody(six.text_type(ex))
|
|
|
|
# NOTE(flwang): See below link to get more details about draft 10,
|
|
# tools.ietf.org/html/draft-ietf-appsawg-json-patch-10
|
|
content_types = {
|
|
'application/openstack-messaging-v2.0-json-patch': 10,
|
|
}
|
|
|
|
if req.content_type not in content_types:
|
|
headers = {'Accept-Patch':
|
|
', '.join(sorted(content_types.keys()))}
|
|
msg = _("Accepted media type for PATCH: %s.")
|
|
LOG.debug(msg, headers)
|
|
raise wsgi_errors.HTTPUnsupportedMediaType(msg % headers)
|
|
|
|
if req.content_length:
|
|
try:
|
|
changes = utils.read_json(req.stream, req.content_length)
|
|
changes = wsgi_utils.sanitize(changes, doctype=list)
|
|
except utils.MalformedJSON as ex:
|
|
LOG.debug(ex)
|
|
description = _(u'Request body could not be parsed.')
|
|
raise wsgi_errors.HTTPBadRequestBody(description)
|
|
|
|
except utils.OverflowedJSONInteger as ex:
|
|
LOG.debug(ex)
|
|
description = _(u'JSON contains integer that is too large.')
|
|
raise wsgi_errors.HTTPBadRequestBody(description)
|
|
|
|
except Exception as ex:
|
|
# Error while reading from the network/server
|
|
LOG.exception(ex)
|
|
description = _(u'Request body could not be read.')
|
|
raise wsgi_errors.HTTPServiceUnavailable(description)
|
|
else:
|
|
msg = _("PATCH body could not be empty for update.")
|
|
LOG.debug(msg)
|
|
raise wsgi_errors.HTTPBadRequestBody(msg)
|
|
|
|
try:
|
|
changes = self._validate.queue_patching(req, changes)
|
|
|
|
# NOTE(Eva-i): using 'get_metadata' instead of 'get', so
|
|
# QueueDoesNotExist error will be thrown in case of non-existent
|
|
# queue.
|
|
metadata = self._topic_controller.get_metadata(topic_name,
|
|
project=project_id)
|
|
reserved_metadata = _get_reserved_metadata(self._validate)
|
|
for change in changes:
|
|
change_method_name = '_do_%s' % change['op']
|
|
change_method = getattr(self, change_method_name)
|
|
change_method(req, metadata, reserved_metadata, change)
|
|
|
|
self._validate.queue_metadata_putting(metadata)
|
|
|
|
self._topic_controller.set_metadata(topic_name,
|
|
metadata,
|
|
project_id)
|
|
except storage_errors.DoesNotExist as ex:
|
|
LOG.debug(ex)
|
|
raise wsgi_errors.HTTPNotFound(six.text_type(ex))
|
|
except validation.ValidationFailed as ex:
|
|
LOG.debug(ex)
|
|
raise wsgi_errors.HTTPBadRequestBody(six.text_type(ex))
|
|
except wsgi_errors.HTTPConflict as ex:
|
|
raise ex
|
|
except Exception as ex:
|
|
LOG.exception(ex)
|
|
description = _(u'Topic could not be updated.')
|
|
raise wsgi_errors.HTTPServiceUnavailable(description)
|
|
for meta, value in _get_reserved_metadata(self._validate).items():
|
|
if not metadata.get(meta):
|
|
metadata[meta] = value
|
|
resp.body = utils.to_json(metadata)
|
|
|
|
def _do_replace(self, req, metadata, reserved_metadata, change):
|
|
path = change['path']
|
|
path_child = path[1]
|
|
value = change['value']
|
|
if path_child in metadata or path_child in reserved_metadata:
|
|
metadata[path_child] = value
|
|
else:
|
|
msg = _("Can't replace non-existent object %s.")
|
|
raise wsgi_errors.HTTPConflict(msg % path_child)
|
|
|
|
def _do_add(self, req, metadata, reserved_metadata, change):
|
|
path = change['path']
|
|
path_child = path[1]
|
|
value = change['value']
|
|
metadata[path_child] = value
|
|
|
|
def _do_remove(self, req, metadata, reserved_metadata, change):
|
|
path = change['path']
|
|
path_child = path[1]
|
|
if path_child in metadata:
|
|
metadata.pop(path_child)
|
|
elif path_child not in reserved_metadata:
|
|
msg = _("Can't remove non-existent object %s.")
|
|
raise wsgi_errors.HTTPConflict(msg % path_child)
|
|
|
|
|
|
class CollectionResource(object):
|
|
|
|
__slots__ = ('_topic_controller', '_validate', '_reserved_metadata')
|
|
|
|
def __init__(self, validate, topic_controller):
|
|
self._topic_controller = topic_controller
|
|
self._validate = validate
|
|
|
|
def _topic_list(self, project_id, path, kfilter, **kwargs):
|
|
try:
|
|
self._validate.queue_listing(**kwargs)
|
|
results = self._topic_controller.list(project=project_id,
|
|
kfilter=kfilter, **kwargs)
|
|
|
|
# Buffer list of topics
|
|
topics = list(next(results))
|
|
|
|
except validation.ValidationFailed as ex:
|
|
LOG.debug(ex)
|
|
raise wsgi_errors.HTTPBadRequestAPI(six.text_type(ex))
|
|
|
|
except Exception as ex:
|
|
LOG.exception(ex)
|
|
description = _(u'Topics could not be listed.')
|
|
raise wsgi_errors.HTTPServiceUnavailable(description)
|
|
|
|
# Got some. Prepare the response.
|
|
kwargs['marker'] = next(results) or kwargs.get('marker', '')
|
|
reserved_metadata = _get_reserved_metadata(self._validate).items()
|
|
for each_topic in topics:
|
|
each_topic['href'] = path + '/' + each_topic['name']
|
|
if kwargs.get('detailed'):
|
|
for meta, value in reserved_metadata:
|
|
if not each_topic.get('metadata', {}).get(meta):
|
|
each_topic['metadata'][meta] = value
|
|
|
|
return topics, kwargs['marker']
|
|
|
|
def _on_get_with_kfilter(self, req, resp, project_id, kfilter={}):
|
|
kwargs = {}
|
|
|
|
# NOTE(kgriffs): This syntax ensures that
|
|
# we don't clobber default values with None.
|
|
req.get_param('marker', store=kwargs)
|
|
req.get_param_as_int('limit', store=kwargs)
|
|
req.get_param_as_bool('detailed', store=kwargs)
|
|
req.get_param('name', store=kwargs)
|
|
|
|
topics, marker = self._topic_list(project_id,
|
|
req.path, kfilter, **kwargs)
|
|
|
|
links = []
|
|
kwargs['marker'] = marker
|
|
if topics:
|
|
links = [
|
|
{
|
|
'rel': 'next',
|
|
'href': req.path + falcon.to_query_str(kwargs)
|
|
}
|
|
]
|
|
|
|
response_body = {
|
|
'topics': topics,
|
|
'links': links
|
|
}
|
|
|
|
resp.body = utils.to_json(response_body)
|
|
# status defaults to 200
|
|
|
|
@decorators.TransportLog("Topics collection")
|
|
@acl.enforce("topics:get_all")
|
|
def on_get(self, req, resp, project_id):
|
|
field = ('marker', 'limit', 'detailed', 'name')
|
|
kfilter = copy.deepcopy(req.params)
|
|
|
|
for key in req.params.keys():
|
|
if key in field:
|
|
kfilter.pop(key)
|
|
|
|
kfilter = kfilter if len(kfilter) > 0 else {}
|
|
for key in kfilter.keys():
|
|
# Since we get the filter value from URL, so need to
|
|
# turn the string to integer if using integer filter value.
|
|
try:
|
|
kfilter[key] = int(kfilter[key])
|
|
except ValueError:
|
|
continue
|
|
self._on_get_with_kfilter(req, resp, project_id, kfilter)
|
|
# status defaults to 200
|