99 lines
3.1 KiB
Python
99 lines
3.1 KiB
Python
#!/usr/bin/env python
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# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2013 Red Hat, 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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#
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# Copyright (c) 2013-2014 Wind River Systems, Inc.
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#
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import jsonpatch
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import re
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import wsme
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from oslo_config import cfg
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CONF = cfg.CONF
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JSONPATCH_EXCEPTIONS = (jsonpatch.JsonPatchException,
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jsonpatch.JsonPointerException,
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KeyError)
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def validate_limit(limit):
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if limit and limit < 0:
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raise wsme.exc.ClientSideError(_("Limit must be positive"))
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return min(CONF.api_limit_max, limit) or CONF.api_limit_max
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def validate_sort_dir(sort_dir):
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if sort_dir not in ['asc', 'desc']:
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raise wsme.exc.ClientSideError(_("Invalid sort direction: %s. "
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"Acceptable values are "
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"'asc' or 'desc'") % sort_dir)
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return sort_dir
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def validate_patch(patch):
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"""Performs a basic validation on patch."""
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if not isinstance(patch, list):
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patch = [patch]
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for p in patch:
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path_pattern = re.compile("^/[a-zA-Z0-9-_]+(/[a-zA-Z0-9-_]+)*$")
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if not isinstance(p, dict) or \
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any(key for key in ["path", "op"] if key not in p):
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raise wsme.exc.ClientSideError(_("Invalid patch format: %s")
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% str(p))
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path = p["path"]
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op = p["op"]
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if op not in ["add", "replace", "remove"]:
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raise wsme.exc.ClientSideError(_("Operation not supported: %s")
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% op)
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if not path_pattern.match(path):
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raise wsme.exc.ClientSideError(_("Invalid path: %s") % path)
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if op == "add":
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if path.count('/') == 1:
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raise wsme.exc.ClientSideError(_("Adding an additional "
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"attribute (%s) to the "
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"resource is not allowed")
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% path)
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class ValidTypes(wsme.types.UserType):
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"""User type for validate that value has one of a few types."""
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def __init__(self, *types):
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self.types = types
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def validate(self, value):
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for t in self.types:
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if t is wsme.types.text and isinstance(value, wsme.types.bytes):
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value = value.decode()
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if isinstance(value, t):
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return value
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else:
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raise ValueError("Wrong type. Expected '%s', got '%s'" % (
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self.types, type(value)))
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