OpenStack Orchestration (Heat)
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# vim: tabstop=4 shiftwidth=4 softtabstop=4
# Copyright 2010-2011 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.
"""
Client classes for callers of a heat system
"""
import errno
import httplib
import json
import logging
import os
import socket
import sys
import heat.api.v1
from heat.common import client as base_client
from heat.common import exception
from heat.common import utils
logger = logging.getLogger(__name__)
SUPPORTED_PARAMS = heat.api.v1.SUPPORTED_PARAMS
class V1Client(base_client.BaseClient):
"""Main client class for accessing heat resources"""
DEFAULT_PORT = 8000
DEFAULT_DOC_ROOT = "/v1"
def _insert_common_parameters(self, params):
params['Version'] = '2010-05-15'
params['SignatureVersion'] = '2'
params['SignatureMethod'] = 'HmacSHA256'
def list_stacks(self, **kwargs):
params = self._extract_params({}, SUPPORTED_PARAMS)
self._insert_common_parameters(params)
res = self.do_request("GET", "/ListStacks", params=params)
data = json.loads(res.read())
return data
def show_stack(self, **kwargs):
params = self._extract_params(kwargs, SUPPORTED_PARAMS)
self._insert_common_parameters(params)
res = self.do_request("GET", "/DescribeStacks", params=params)
data = json.loads(res.read())
return data
def create_stack(self, **kwargs):
params = self._extract_params(kwargs, SUPPORTED_PARAMS)
self._insert_common_parameters(params)
res = self.do_request("POST", "/CreateStack", params=params)
data = json.loads(res.read())
return data
def update_stack(self, **kwargs):
return
def delete_stack(self, **kwargs):
self._insert_common_parameters(params)
params = self._extract_params(kwargs, SUPPORTED_PARAMS)
self.do_request("DELETE", "/DeleteStack", params)
return True
Client = V1Client
def get_client(host, port=None, username=None,
password=None, tenant=None,
auth_url=None, auth_strategy=None,
auth_token=None, region=None,
is_silent_upload=False, insecure=False):
"""
Returns a new client heat client object based on common kwargs.
If an option isn't specified falls back to common environment variable
defaults.
"""
if auth_url or os.getenv('OS_AUTH_URL'):
force_strategy = 'keystone'
else:
force_strategy = None
creds = dict(username=username or
os.getenv('OS_AUTH_USER', os.getenv('OS_USERNAME')),
password=password or
os.getenv('OS_AUTH_KEY', os.getenv('OS_PASSWORD')),
tenant=tenant or
os.getenv('OS_AUTH_TENANT',
os.getenv('OS_TENANT_NAME')),
auth_url=auth_url or os.getenv('OS_AUTH_URL'),
strategy=force_strategy or auth_strategy or
os.getenv('OS_AUTH_STRATEGY', 'noauth'),
region=region or os.getenv('OS_REGION_NAME'),
)
if creds['strategy'] == 'keystone' and not creds['auth_url']:
msg = ("--auth_url option or OS_AUTH_URL environment variable "
"required when keystone authentication strategy is enabled\n")
raise exception.ClientConfigurationError(msg)
use_ssl = (creds['auth_url'] is not None and
creds['auth_url'].find('https') != -1)
client = Client
return client(host=host,
port=port,
use_ssl=use_ssl,
auth_tok=auth_token or
os.getenv('OS_TOKEN'),
creds=creds,
insecure=insecure)