deb-murano/murano/common/engine.py
Stan Lagun 35979b1e02 Preliminary support for HOT packages
Adds support for packages consisting of single HOT template.
Most of HOT features are supported with exception of
environments, attachments and JSON parameter type.

Implements: blueprint hot-packages

Change-Id: I927af0e96f1613e8843ac47844e9c19fa00fdaa6
2014-05-30 12:27:01 +04:00

103 lines
3.7 KiB
Python

# Copyright (c) 2014 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 uuid
import anyjson
from oslo import messaging
from oslo.messaging import target
from murano.common import config
from murano.common.helpers import token_sanitizer
from murano.common import rpc
from murano.dsl import executor
from murano.dsl import results_serializer
from murano.engine import environment
from murano.engine import package_class_loader
from murano.engine import package_loader
from murano.engine.system import status_reporter
import murano.engine.system.system_objects as system_objects
from murano.openstack.common.gettextutils import _ # noqa
from murano.openstack.common import log as logging
RPC_SERVICE = None
LOG = logging.getLogger(__name__)
class TaskProcessingEndpoint(object):
@staticmethod
def handle_task(context, task):
s_task = token_sanitizer.TokenSanitizer().sanitize(task)
LOG.info(_('Starting processing task: {task_desc}').format(
task_desc=anyjson.dumps(s_task)))
env = environment.Environment()
env.token = task['token']
env.tenant_id = task['tenant_id']
LOG.debug('Processing new task: {0}'.format(task))
try:
with package_loader.ApiPackageLoader(env.token, env.tenant_id) as \
pkg_loader:
class_loader = package_class_loader.PackageClassLoader(
pkg_loader)
system_objects.register(class_loader, pkg_loader)
exc = executor.MuranoDslExecutor(class_loader, env)
obj = exc.load(task['model'])
try:
if obj is not None:
obj.type.invoke('deploy', exc, obj, {})
except Exception as e:
reporter = status_reporter.StatusReporter()
reporter.initialize(obj)
reporter.report_error(obj, '{0}'.format(e))
finally:
s_res = results_serializer.serialize(obj, exc)
rpc.api().process_result(s_res)
except Exception as e:
# TODO(gokrokve) report error here
# TODO(slagun) code below needs complete rewrite and redesign
LOG.exception("Error during task execution for tenant %s",
env.tenant_id)
if task['model']['Objects']:
msg_env = Environment(task['model']['Objects']['?']['id'])
reporter = status_reporter.StatusReporter()
reporter.initialize(msg_env)
reporter.report_error(msg_env, '{0}'.format(e))
rpc.api().process_result(task['model'])
def _prepare_rpc_service(server_id):
endpoints = [TaskProcessingEndpoint()]
transport = messaging.get_transport(config.CONF)
s_target = target.Target('murano', 'tasks', server=server_id)
return messaging.get_rpc_server(transport, s_target, endpoints, 'eventlet')
def get_rpc_service():
global RPC_SERVICE
if RPC_SERVICE is None:
RPC_SERVICE = _prepare_rpc_service(str(uuid.uuid4()))
return RPC_SERVICE
class Environment:
def __init__(self, object_id):
self.object_id = object_id