Github user mxmrlv commented on a diff in the pull request:
https://github.com/apache/incubator-ariatosca/pull/159#discussion_r123895688
--- Diff: aria/orchestrator/workflows/core/compile.py ---
@@ -18,99 +18,105 @@
from .. import executor, api
-def create_execution_tasks(ctx, task_graph, default_executor):
- execution = ctx.execution
- _construct_execution_tasks(execution, task_graph, default_executor)
- ctx.model.execution.update(execution)
- return execution.tasks
-
-
-def _construct_execution_tasks(execution,
- task_graph,
- default_executor,
-
stub_executor=executor.base.StubTaskExecutor,
- start_stub_type=models.Task.START_WORKFLOW,
- end_stub_type=models.Task.END_WORKFLOW,
- depends_on=()):
- """
- Translates the user graph to the execution graph
- :param task_graph: The user's graph
- :param start_stub_type: internal use
- :param end_stub_type: internal use
- :param depends_on: internal use
- """
- depends_on = list(depends_on)
-
- # Insert start marker
- start_task = models.Task(execution=execution,
- dependencies=depends_on,
- _api_id=_start_graph_suffix(task_graph.id),
- _stub_type=start_stub_type,
- _executor=stub_executor)
-
- for task in task_graph.topological_order(reverse=True):
- operation_dependencies = _get_tasks_from_dependencies(
- execution, task_graph.get_dependencies(task), [start_task])
-
- if isinstance(task, api.task.OperationTask):
- models.Task.from_api_task(api_task=task,
- executor=default_executor,
- dependencies=operation_dependencies)
-
- elif isinstance(task, api.task.WorkflowTask):
- # Build the graph recursively while adding start and end
markers
- _construct_execution_tasks(
- execution=execution,
- task_graph=task,
- default_executor=default_executor,
- stub_executor=stub_executor,
- start_stub_type=models.Task.START_SUBWROFKLOW,
- end_stub_type=models.Task.END_SUBWORKFLOW,
- depends_on=operation_dependencies
- )
- elif isinstance(task, api.task.StubTask):
- models.Task(execution=execution,
- dependencies=operation_dependencies,
- _api_id=task.id,
- _executor=stub_executor,
- _stub_type=models.Task.STUB,
- )
- else:
- raise RuntimeError('Undefined state')
-
- # Insert end marker
- models.Task(dependencies=_get_non_dependent_tasks(execution) or
[start_task],
- execution=execution,
- _api_id=_end_graph_suffix(task_graph.id),
- _executor=stub_executor,
- _stub_type=end_stub_type)
-
-
-def _start_graph_suffix(api_id):
- return '{0}-Start'.format(api_id)
-
-
-def _end_graph_suffix(api_id):
- return '{0}-End'.format(api_id)
-
-
-def _get_non_dependent_tasks(execution):
- tasks_with_dependencies = set()
- for task in execution.tasks:
- tasks_with_dependencies.update(task.dependencies)
- return list(set(execution.tasks) - set(tasks_with_dependencies))
-
-
-def _get_tasks_from_dependencies(execution, dependencies, default=()):
- """
- Returns task list from dependencies.
- """
- tasks = []
- for dependency in dependencies:
- if getattr(dependency, 'actor', False):
- # This is
- dependency_name = dependency.id
- else:
- dependency_name = _end_graph_suffix(dependency.id)
- tasks.extend(task for task in execution.tasks if task._api_id ==
dependency_name)
- return tasks or default
+# TODO: is class really needed?
--- End diff --
remove
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