def resume_workflow(self, execution_id):
try:
with db_api.transaction():
# Must be before loading the object itself (see method doc).
self._lock_workflow_execution(execution_id)
wf_ex = db_api.get_workflow_execution(execution_id)
if wf_ex.state != states.PAUSED:
return
wf_handler.set_execution_state(wf_ex, states.RUNNING)
wf_ctrl = wf_base.WorkflowController.get_controller(wf_ex)
# Calculate commands to process next.
cmds = wf_ctrl.continue_workflow()
# When resuming a workflow we need to ignore all 'pause'
# commands because workflow controller takes tasks that
# completed within the period when the workflow was pause.
cmds = filter(
lambda c: not isinstance(c, commands.PauseWorkflow),
cmds
)
# Since there's no explicit task causing the operation
# we need to mark all not processed tasks as processed
# because workflow controller takes only completed tasks
# with flag 'processed' equal to False.
for t_ex in wf_ex.task_executions:
if states.is_completed(t_ex.state) and not t_ex.processed:
t_ex.processed = True
self._dispatch_workflow_commands(wf_ex, cmds)
if not cmds:
if not wf_utils.find_incomplete_tasks(wf_ex):
wf_handler.succeed_workflow(
wf_ex,
wf_ctrl.evaluate_workflow_final_context()
)
return wf_ex
except Exception as e:
LOG.error(
"Failed to resume execution id=%s: %s\n%s",
execution_id, e, traceback.format_exc()
)
self._fail_workflow(execution_id, e)
raise e
def resume_workflow(self, execution_id):
try:
with db_api.transaction():
# Must be before loading the object itself (see method doc).
self._lock_workflow_execution(execution_id)
wf_ex = db_api.get_workflow_execution(execution_id)
if wf_ex.state != states.PAUSED:
return wf_ex
wf_handler.set_execution_state(wf_ex, states.RUNNING)
wf_ctrl = wf_base.WorkflowController.get_controller(wf_ex)
# Calculate commands to process next.
cmds = wf_ctrl.continue_workflow()
# When resuming a workflow we need to ignore all 'pause'
# commands because workflow controller takes tasks that
# completed within the period when the workflow was pause.
cmds = filter(
lambda c: not isinstance(c, commands.PauseWorkflow), cmds)
# Since there's no explicit task causing the operation
# we need to mark all not processed tasks as processed
# because workflow controller takes only completed tasks
# with flag 'processed' equal to False.
for t_ex in wf_ex.task_executions:
if states.is_completed(t_ex.state) and not t_ex.processed:
t_ex.processed = True
self._dispatch_workflow_commands(wf_ex, cmds)
if not cmds:
if not wf_utils.find_incomplete_tasks(wf_ex):
wf_handler.succeed_workflow(
wf_ex, wf_ctrl.evaluate_workflow_final_context())
return wf_ex
except Exception as e:
LOG.error("Failed to resume execution id=%s: %s\n%s", execution_id,
e, traceback.format_exc())
self._fail_workflow(execution_id, e)
raise e
def _check_workflow_completion(wf_ex, action_ex, wf_ctrl):
if states.is_paused_or_completed(wf_ex.state):
return
if wf_utils.find_incomplete_tasks(wf_ex):
return
if wf_ctrl.all_errors_handled():
wf_handler.succeed_workflow(
wf_ex, wf_ctrl.evaluate_workflow_final_context())
else:
result_str = (str(action_ex.output.get('result', 'Unknown'))
if action_ex.output else 'Unknown')
state_info = ("Failure caused by error in task '%s': %s" %
(action_ex.task_execution.name, result_str))
wf_handler.fail_workflow(wf_ex, state_info)
def _check_workflow_completion(wf_ex, action_ex, wf_ctrl):
if states.is_paused_or_completed(wf_ex.state):
return
if wf_utils.find_incomplete_tasks(wf_ex):
return
if wf_ctrl.all_errors_handled():
wf_handler.succeed_workflow(
wf_ex,
wf_ctrl.evaluate_workflow_final_context()
)
else:
result_str = str(action_ex.output.get('result', "Unknown"))
state_info = (
"Failure caused by error in task '%s': %s" %
(action_ex.task_execution.name, result_str)
)
wf_handler.fail_workflow(wf_ex, state_info)