deb-mistral/mistral/workbook/parser.py
Renat Akhmerov e30415ef37 Making action controller able to handler multiple actions
* Added action service similar to workflow service
* Added ActionListSpec to represent a top level action list
* Changed action controller to call action service properly
* Added required unit tests
* Other minor changes

Change-Id: Iebbefab6168cdc167e5c2d9ad7fe806d431f0cef
2014-09-23 18:51:55 +04:00

143 lines
3.6 KiB
Python

# Copyright 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
from mistral import exceptions as exc
from mistral.workbook.v1 import actions as actions_v1
from mistral.workbook.v1 import namespaces as ns_v1
from mistral.workbook.v1 import tasks as tasks_v1
from mistral.workbook.v1 import workbook as wb_v1
from mistral.workbook.v1 import workflow as wf_v1
from mistral.workbook.v2 import actions as actions_v2
from mistral.workbook.v2 import tasks as tasks_v2
from mistral.workbook.v2 import workbook as wb_v2
from mistral.workbook.v2 import workflows as wf_v2
V1_0 = '1.0'
V2_0 = '2.0'
ALL_VERSIONS = [V1_0, V2_0]
def parse_yaml(text):
"""Loads a text in YAML format as dictionary object.
:param text: YAML text.
:return: Parsed YAML document as dictionary.
"""
try:
return yaml.safe_load(text)
except error.YAMLError as e:
raise RuntimeError("Definition could not be parsed: %s\n" % e)
def _get_spec_version(spec_dict):
# If version is not specified it will '1.0' by default.
ver = V1_0
if 'version' in spec_dict:
ver = spec_dict['version']
if str(ver) not in ALL_VERSIONS:
raise exc.DSLParsingException('Unsupported DSL version: %s' % ver)
return ver
# Factory methods to get specifications either from raw YAML formatted text or
# from dictionaries parsed from YAML formatted text.
def get_workbook_spec(spec_dict):
if _get_spec_version(spec_dict) == V1_0:
return wb_v1.WorkbookSpec(spec_dict)
else:
return wb_v2.WorkbookSpec(spec_dict)
def get_workbook_spec_from_yaml(text):
spec_dict = parse_yaml(text)
return get_workbook_spec(spec_dict)
def get_namespace_spec(spec_dict):
if _get_spec_version(spec_dict) == V1_0:
return ns_v1.NamespaceSpec(spec_dict)
else:
return None
def get_action_spec(spec_dict):
if _get_spec_version(spec_dict) == V1_0:
return actions_v1.ActionSpec(spec_dict)
else:
return actions_v2.ActionSpec(spec_dict)
def get_action_spec_from_yaml(text, action_name):
spec_dict = parse_yaml(text)
spec_dict['name'] = action_name
return get_action_spec(spec_dict)
def get_action_list_spec(spec_dict):
return actions_v2.ActionListSpec(spec_dict)
def get_action_list_spec_from_yaml(text):
spec_dict = parse_yaml(text)
return get_action_list_spec(spec_dict)
def get_workflow_spec(spec_dict):
if _get_spec_version(spec_dict) == V1_0:
return wf_v1.WorkflowSpec(spec_dict)
else:
return wf_v2.WorkflowSpec(spec_dict)
def get_workflow_list_spec(spec_dict):
return wf_v2.WorkflowListSpec(spec_dict)
def get_workflow_spec_from_yaml(text):
spec_dict = parse_yaml(text)
return get_workflow_spec(spec_dict)
def get_workflow_list_spec_from_yaml(text):
spec_dict = parse_yaml(text)
return get_workflow_list_spec(spec_dict)
def get_task_spec(spec_dict):
if _get_spec_version(spec_dict) == V1_0:
return tasks_v1.TaskSpec(spec_dict)
else:
return tasks_v2.TaskSpec(spec_dict)
def get_trigger_spec(spec_dict):
# TODO(rakhmerov): Implement.
pass