77 lines
2.5 KiB
Python
77 lines
2.5 KiB
Python
# Copyright (c) 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 yaml
|
|
from yaml import error
|
|
|
|
|
|
class Parser(object):
|
|
"""Mistral DSL parser.
|
|
|
|
Loads a workbook definition in YAML format as described in Mistral DSL
|
|
specification and provides various methods to access DSL entities like
|
|
tasks and actions in a form of dictionary.
|
|
"""
|
|
def __init__(self, workbook_definition):
|
|
try:
|
|
self.doc = yaml.safe_load(workbook_definition)
|
|
except error.YAMLError as exc:
|
|
raise RuntimeError("Definition could not be parsed: %s\n"
|
|
% exc.message)
|
|
|
|
def get_services(self):
|
|
services = []
|
|
for service_name in self.doc["Services"]:
|
|
services.append(self.doc["Services"][service_name])
|
|
return services
|
|
|
|
def get_service(self, service_name):
|
|
return self.doc["Services"][service_name]
|
|
|
|
def get_events(self):
|
|
events_from_doc = self.doc["Workflow"]["events"]
|
|
events = []
|
|
for name in events_from_doc:
|
|
event_dict = {'name': name}
|
|
event_dict.update(events_from_doc[name])
|
|
events.append(event_dict)
|
|
return events
|
|
|
|
def get_tasks(self):
|
|
tasks = self.doc["Workflow"]["tasks"]
|
|
|
|
for task_name, task_dsl in tasks.iteritems():
|
|
task_dsl["service_name"] = task_dsl["action"].split(':')[0]
|
|
|
|
return tasks
|
|
|
|
def get_action(self, task_action_name):
|
|
service_name = task_action_name.split(':')[0]
|
|
action_name = task_action_name.split(':')[1]
|
|
action = self.get_service(service_name)['actions'][action_name]
|
|
return action
|
|
|
|
def get_actions(self, service_name):
|
|
return self.get_service(service_name)['actions']
|
|
|
|
def get_service_names(self):
|
|
names = []
|
|
for name in self.doc['Services']:
|
|
names.append(name)
|
|
return names
|
|
|
|
def get_event_task_name(self, event_name):
|
|
return self.doc["Workflow"]["events"][event_name]['tasks']
|