179 lines
4.7 KiB
Python
179 lines
4.7 KiB
Python
# Copyright 2013 - Mirantis, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from mistral.db.v2 import api as db_api
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from mistral import exceptions as exc
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from mistral.lang import parser as spec_parser
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from mistral import utils
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from mistral.workflow import states
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from oslo_log import log as logging
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STD_WF_PATH = 'resources/workflows'
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LOG = logging.getLogger(__name__)
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def register_standard_workflows(run_in_tx=True):
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LOG.debug("Registering standard workflows...")
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workflow_paths = utils.get_file_list(STD_WF_PATH)
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for wf_path in workflow_paths:
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workflow_definition = open(wf_path).read()
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create_workflows(
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workflow_definition,
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scope='public',
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is_system=True,
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run_in_tx=run_in_tx,
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namespace=''
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)
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def _clear_system_workflow_db():
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db_api.delete_workflow_definitions(is_system=True)
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def sync_db():
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LOG.debug("Syncing db...")
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with db_api.transaction():
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_clear_system_workflow_db()
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register_standard_workflows(run_in_tx=False)
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def create_workflows(definition, scope='private', is_system=False,
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run_in_tx=True, namespace=''):
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LOG.debug("Creating workflows...")
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wf_list_spec = spec_parser.get_workflow_list_spec_from_yaml(
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definition,
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validate=True
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)
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db_wfs = []
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if run_in_tx:
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with db_api.transaction():
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_append_all_workflows(
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definition,
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is_system,
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scope,
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namespace,
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wf_list_spec,
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db_wfs
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)
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else:
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_append_all_workflows(
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definition,
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is_system,
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scope,
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namespace,
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wf_list_spec,
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db_wfs
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)
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return db_wfs
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def _append_all_workflows(definition, is_system, scope, namespace,
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wf_list_spec, db_wfs):
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for wf_spec in wf_list_spec.get_workflows():
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db_wfs.append(
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_create_workflow(
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wf_spec,
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definition,
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scope,
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namespace,
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is_system
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)
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)
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def update_workflows(definition, scope='private', identifier=None,
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namespace=''):
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LOG.debug("Updating workflows")
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wf_list_spec = spec_parser.get_workflow_list_spec_from_yaml(
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definition, validate=True
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)
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wfs = wf_list_spec.get_workflows()
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if identifier and len(wfs) > 1:
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raise exc.InputException(
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"More than one workflows are not supported for "
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"update with identifier. [identifier: %s]" %
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identifier
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)
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db_wfs = []
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with db_api.transaction():
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for wf_spec in wf_list_spec.get_workflows():
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db_wfs.append(_update_workflow(
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wf_spec,
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definition,
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scope,
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namespace=namespace,
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identifier=identifier
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))
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return db_wfs
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def update_workflow_execution_env(wf_ex, env):
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if not env:
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return wf_ex
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if wf_ex.state not in [states.IDLE, states.PAUSED, states.ERROR]:
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raise exc.NotAllowedException(
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'Updating env to workflow execution is only permitted if '
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'it is in IDLE, PAUSED, or ERROR state.'
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)
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wf_ex.params['env'] = utils.merge_dicts(wf_ex.params['env'], env)
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return wf_ex
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def _get_workflow_values(wf_spec, definition, scope, namespace=None,
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is_system=False):
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values = {
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'name': wf_spec.get_name(),
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'tags': wf_spec.get_tags(),
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'definition': definition,
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'spec': wf_spec.to_dict(),
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'scope': scope,
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'namespace': namespace,
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'is_system': is_system
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}
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return values
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def _create_workflow(wf_spec, definition, scope, namespace, is_system):
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return db_api.create_workflow_definition(
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_get_workflow_values(wf_spec, definition, scope, namespace, is_system)
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)
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def _update_workflow(wf_spec, definition, scope, identifier=None,
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namespace=''):
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values = _get_workflow_values(wf_spec, definition, scope, namespace)
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return db_api.update_workflow_definition(
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identifier if identifier else values['name'],
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values
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)
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