61 lines
2.1 KiB
Python
61 lines
2.1 KiB
Python
# 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 microversion_parse as mvp
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from oslo_log import log
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from ironic.api.controllers import base
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from ironic.api.controllers.v1 import versions
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from ironic.common import utils
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LOG = log.getLogger(__name__)
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class JsonExtensionMiddleware(object):
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"""Simplified processing of .json extension.
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Previously Ironic API used the "guess_content_type_from_ext" feature.
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It was never needed, as we never allowed non-JSON content types anyway.
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Now that it is removed, this middleware strips .json extension for
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backward compatibility.
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"""
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def __init__(self, app):
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self.app = app
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def __call__(self, env, start_response):
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path = utils.safe_rstrip(env.get('PATH_INFO'), '/')
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if path and path.endswith('.json'):
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version_string = self.transform_header(base.Version.string)
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minor = None
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request_version = env.get(version_string, '')
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if request_version:
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_, minor = mvp.parse_version_string(request_version)
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env['HAS_JSON_SUFFIX'] = False
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if minor and minor < versions.MINOR_91_DOT_JSON:
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LOG.debug('Stripping .json prefix from %s for compatibility '
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'with pecan', path)
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env['PATH_INFO'] = path[:-5]
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env['HAS_JSON_SUFFIX'] = True
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else:
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env['HAS_JSON_SUFFIX'] = False
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return self.app(env, start_response)
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def transform_header(self, version_string):
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"""Transforms version string to HTTP header format."""
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return 'HTTP_%s' % version_string.replace('-', '_').upper()
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