mistral/mistral/api/controllers/resource.py

95 lines
2.3 KiB
Python

# -*- coding: utf-8 -*-
#
# Copyright 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 json
from wsme import types as wtypes
class Resource(wtypes.Base):
"""REST API Resource."""
_wsme_attributes = []
def to_dict(self):
d = {}
for attr in self._wsme_attributes:
attr_val = getattr(self, attr.name)
if not isinstance(attr_val, wtypes.UnsetType):
d[attr.name] = attr_val
return d
@classmethod
def from_dict(cls, d):
obj = cls()
for key, val in d.items():
if hasattr(obj, key):
setattr(obj, key, val)
return obj
def __str__(self):
"""WSME based implementation of __str__."""
res = "%s [" % type(self).__name__
first = True
for attr in self._wsme_attributes:
if not first:
res += ', '
else:
first = False
res += "%s='%s'" % (attr.name, getattr(self, attr.name))
return res + "]"
def to_string(self):
return json.dumps(self.to_dict())
class ResourceList(Resource):
"""Resource containing the list of other resources."""
def to_dict(self):
d = {}
for attr in self._wsme_attributes:
attr_val = getattr(self, attr.name)
if isinstance(attr_val, list):
if isinstance(attr_val[0], Resource):
d[attr.name] = [v.to_dict() for v in attr_val]
elif not isinstance(attr_val, wtypes.UnsetType):
d[attr.name] = attr_val
return d
class Link(Resource):
"""Web link."""
href = wtypes.text
target = wtypes.text
@classmethod
def sample(cls):
return cls(href='http://example.com/here',
target='here')