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# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements. See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You 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.
"""
TSOCA normative lifecycle workflows.
"""
from ... import workflow
from ..api import task
NORMATIVE_STANDARD_INTERFACE = 'Standard' # 'tosca.interfaces.node.lifecycle.Standard'
NORMATIVE_CONFIGURE_INTERFACE = 'Configure' # 'tosca.interfaces.relationship.Configure'
NORMATIVE_CREATE = 'create'
NORMATIVE_CONFIGURE = 'configure'
NORMATIVE_START = 'start'
NORMATIVE_STOP = 'stop'
NORMATIVE_DELETE = 'delete'
NORMATIVE_PRE_CONFIGURE_SOURCE = 'pre_configure_source'
NORMATIVE_PRE_CONFIGURE_TARGET = 'pre_configure_target'
NORMATIVE_POST_CONFIGURE_SOURCE = 'post_configure_source'
NORMATIVE_POST_CONFIGURE_TARGET = 'post_configure_target'
NORMATIVE_ADD_SOURCE = 'add_source'
NORMATIVE_ADD_TARGET = 'add_target'
NORMATIVE_REMOVE_TARGET = 'remove_target'
NORMATIVE_REMOVE_SOURCE = 'remove_source'
NORMATIVE_TARGET_CHANGED = 'target_changed'
__all__ = (
'NORMATIVE_STANDARD_INTERFACE',
'NORMATIVE_CONFIGURE_INTERFACE',
'NORMATIVE_CREATE',
'NORMATIVE_START',
'NORMATIVE_STOP',
'NORMATIVE_DELETE',
'NORMATIVE_CONFIGURE',
'NORMATIVE_PRE_CONFIGURE_SOURCE',
'NORMATIVE_PRE_CONFIGURE_TARGET',
'NORMATIVE_POST_CONFIGURE_SOURCE',
'NORMATIVE_POST_CONFIGURE_TARGET',
'NORMATIVE_ADD_SOURCE',
'NORMATIVE_ADD_TARGET',
'NORMATIVE_REMOVE_SOURCE',
'NORMATIVE_REMOVE_TARGET',
'NORMATIVE_TARGET_CHANGED',
'install_node',
'uninstall_node',
'start_node',
'stop_node',
)
@workflow(suffix_template='{node.name}')
def install_node(graph, node, **kwargs):
# Create
sequence = [task.create_task(node, NORMATIVE_STANDARD_INTERFACE, NORMATIVE_CREATE)]
# Configure
sequence += task.create_relationships_tasks(node,
NORMATIVE_CONFIGURE_INTERFACE,
NORMATIVE_PRE_CONFIGURE_SOURCE,
NORMATIVE_PRE_CONFIGURE_TARGET)
sequence.append(task.create_task(node, NORMATIVE_STANDARD_INTERFACE, NORMATIVE_CONFIGURE))
sequence += task.create_relationships_tasks(node,
NORMATIVE_CONFIGURE_INTERFACE,
NORMATIVE_POST_CONFIGURE_SOURCE,
NORMATIVE_POST_CONFIGURE_TARGET)
# Start
sequence += _create_start_tasks(node)
graph.sequence(*sequence)
@workflow(suffix_template='{node.name}')
def uninstall_node(graph, node, **kwargs):
# Stop
sequence = _create_stop_tasks(node)
# Delete
sequence.append(task.create_task(node, NORMATIVE_STANDARD_INTERFACE, NORMATIVE_DELETE))
graph.sequence(*sequence)
@workflow(suffix_template='{node.name}')
def start_node(graph, node, **kwargs):
graph.sequence(*_create_start_tasks(node))
@workflow(suffix_template='{node.name}')
def stop_node(graph, node, **kwargs):
graph.sequence(*_create_stop_tasks(node))
def _create_start_tasks(node):
sequence = [task.create_task(node, NORMATIVE_STANDARD_INTERFACE, NORMATIVE_START)]
sequence += task.create_relationships_tasks(node,
NORMATIVE_CONFIGURE_INTERFACE,
NORMATIVE_ADD_SOURCE, NORMATIVE_ADD_TARGET)
return sequence
def _create_stop_tasks(node):
sequence = [task.create_task(node, NORMATIVE_STANDARD_INTERFACE, NORMATIVE_STOP)]
sequence += task.create_relationships_tasks(node,
NORMATIVE_CONFIGURE_INTERFACE,
NORMATIVE_REMOVE_SOURCE, NORMATIVE_REMOVE_TARGET)
return sequence
def create_node_task_dependencies(graph, tasks_and_nodes, reverse=False):
"""
Creates dependencies between tasks if there is a relationship (outbound) between their nodes.
"""
def get_task(node_name):
for api_task, task_node in tasks_and_nodes:
if task_node.name == node_name:
return api_task
return None
for api_task, node in tasks_and_nodes:
dependencies = []
for relationship in node.outbound_relationships:
dependency = get_task(relationship.target_node.name)
if dependency:
dependencies.append(dependency)
if dependencies:
if reverse:
for dependency in dependencies:
graph.add_dependency(dependency, api_task)
else:
graph.add_dependency(api_task, dependencies)
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