85cd73ec68
Old names are kept for backward compatibility. Last references to the old NVP plugins are going to be dropped in Juno. Completes blueprint nicira-plugin-renaming Change-Id: Ia1aa4f658891e7ce9469748432c338353195edfd
67 lines
2.6 KiB
Python
67 lines
2.6 KiB
Python
# Copyright 2014 VMware, Inc.
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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 inspect
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from neutron.plugins.vmware.api_client import exception
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DEFAULT_VERSION = -1
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def versioned(func_table):
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def versioned_function(wrapped_func):
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func_name = wrapped_func.__name__
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def dispatch_versioned_function(cluster, *args, **kwargs):
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# Call the wrapper function, in case we need to
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# run validation checks regarding versions. It
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# should return the NSX version
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v = (wrapped_func(cluster, *args, **kwargs) or
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cluster.api_client.get_version())
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func = get_function_by_version(func_table, func_name, v)
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func_kwargs = kwargs
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arg_spec = inspect.getargspec(func)
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if not arg_spec.keywords and not arg_spec.varargs:
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# drop args unknown to function from func_args
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arg_set = set(func_kwargs.keys())
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for arg in arg_set - set(arg_spec.args):
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del func_kwargs[arg]
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# NOTE(salvatore-orlando): shall we fail here if a required
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# argument is not passed, or let the called function raise?
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return func(cluster, *args, **func_kwargs)
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return dispatch_versioned_function
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return versioned_function
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def get_function_by_version(func_table, func_name, ver):
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if ver:
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if ver.major not in func_table[func_name]:
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major = max(func_table[func_name].keys())
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minor = max(func_table[func_name][major].keys())
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if major > ver.major:
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raise NotImplementedError(_("Operation may not be supported"))
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else:
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major = ver.major
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minor = ver.minor
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if ver.minor not in func_table[func_name][major]:
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minor = DEFAULT_VERSION
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return func_table[func_name][major][minor]
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else:
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msg = _('NSX version is not set. Unable to complete request '
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'correctly. Check log for NSX communication errors.')
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raise exception.ServiceUnavailable(message=msg)
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