Brian Waldon f0445a1b44 Rewrite link parsing for finding v2 schemas
What we called 'links' are no longer returned in a container of
objects, they are top-level entity attribtues. This fixes the
parsing of the entities to look in the correct place when trying
to locate a specific schema.

Add a helper for printing to stderr and exiting with a non-zero
exit code.

Map 'name' to 'Attribute' when explaining a schema.

Related to bp glance-client-v2

Change-Id: Ib98e912a7af0bb570b4fd738733edd9b837d1a05
2012-07-13 18:38:40 -07:00

59 lines
1.9 KiB
Python

# Copyright 2012 OpenStack LLC.
# 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.
from glanceclient import exc
class SchemaProperty(object):
def __init__(self, name, **kwargs):
self.name = name
self.description = kwargs.get('description')
def translate_schema_properties(schema_properties):
"""Parse the properties dictionary of a schema document
:returns list of SchemaProperty objects
"""
properties = []
for (name, prop) in schema_properties.items():
properties.append(SchemaProperty(name, **prop))
return properties
class Schema(object):
def __init__(self, raw_schema):
self._raw_schema = raw_schema
self.name = raw_schema['name']
raw_properties = raw_schema['properties']
self.properties = translate_schema_properties(raw_properties)
class Controller(object):
def __init__(self, http_client):
self.http_client = http_client
def get(self, schema_name):
uri = self._find_schema_uri(schema_name)
_, raw_schema = self.http_client.json_request('GET', uri)
return Schema(raw_schema)
def _find_schema_uri(self, schema_name):
_, schema_index = self.http_client.json_request('GET', '/v2/schemas')
try:
return schema_index[schema_name]
except KeyError:
raise exc.SchemaNotFound(schema_name)