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# Copyright 2014 Rackspace Hosting
# All Rights Reserved.
#
# 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 troveclient import base
class MetadataResource(base.Resource):
def __getitem__(self, item):
return self.__dict__[item]
def __contains__(self, item):
if item in self.__dict__:
return True
else:
return False
class Metadata(base.Manager):
resource_class = MetadataResource
def list(self, instance_id):
return self._get('/instances/%s/metadata' % instance_id, 'metadata')
def show(self, instance_id, key):
return self._get('/instances/%s/metadata/%s' % (instance_id, key),
'metadata')
def create(self, instance_id, key, value):
body = {
'metadata': {
'value': self._parse_value(value)
}
}
return self._create(
'/instances/%s/metadata/%s' % (instance_id, key), body, 'metadata')
def update(self, instance_id, key, newkey, value):
body = {
'metadata': {
'key': newkey,
'value': self._parse_value(value)
}
}
return self._update(
'/instances/%s/metadata/%s' % (instance_id, key), body)
def edit(self, instance_id, key, value):
body = {
'metadata': {
'value': self._parse_value(value)
}
}
return self._edit(
'/instances/%s/metadata/%s' % (instance_id, key), body)
def delete(self, instance_id, key):
return self._delete('/instances/%s/metadata/%s' % (instance_id, key))
@staticmethod
def _parse_value(value):
"""This method is used to parse if a string was passed to any of the
methods we should first try to deserialize it using json.loads. This
is needed to facilitate users passing serialized structures from the
cli.
:param value: A value of type dict, list, tuple, int, float, str
:returns value:
"""
# NOTE(imsplitbit): if you give _parse_value invalid json you get
# the string passed back to you.
if isinstance(value, str):
try:
value = json.loads(value)
except ValueError:
# the value passed in was a string but not json
pass
return value
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