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Posted to dev@ariatosca.apache.org by av...@apache.org on 2017/04/25 14:48:52 UTC
incubator-ariatosca git commit: Improve execution cancelling [Forced
Update!]
Repository: incubator-ariatosca
Updated Branches:
refs/heads/ARIA-143-improve-cancelling-of-workflow-execution 8d68c6b32 -> 884c3915e (forced update)
Improve execution cancelling
Unhandled execution status transitions resulting from cancelling an
execution via the CLI, that we indentified and tried to address:
1. TERMINATED -> CANCELLING
You cancel the execution, but by the time we try to set the status to
CANCELLING, the execution thread had already finished, and therefore, in
SUCCEEDED status.
2. FAILED -> CANCELLING
You cancel the execution, but by the time we try to set the status to
CANCELLING, the execution thread had already encountered an error, and therefore, in
FAILED state.
3. TERMINATED -> CANCELLED
Similar to #1, but with CANCELLED instead of CANCELLING.
4. FAILED -> CANCELLED
Similar to #1, but with CANCELLED instead of CANCELLING.
In all of the above cases (#1-#4), we skip updating the execution status,
and log that the execution already succeeded/failed before we were able
to cancel it.
5. CANCELLING -> STARTED
You cancel the execution while it is still in pending state. Meanwhile,
while the execution status was already set to CANCELLING, we try to set
the execution status
6. CANCELLED -> STARTED
Similar to #5, but after the status is set to CANCELLING, it also gets
set to CANCELLED before attempting to set it to STARTED.
In cases #5-#6, we skip updtating the execution status, and nothing is logged.
Project: http://git-wip-us.apache.org/repos/asf/incubator-ariatosca/repo
Commit: http://git-wip-us.apache.org/repos/asf/incubator-ariatosca/commit/884c3915
Tree: http://git-wip-us.apache.org/repos/asf/incubator-ariatosca/tree/884c3915
Diff: http://git-wip-us.apache.org/repos/asf/incubator-ariatosca/diff/884c3915
Branch: refs/heads/ARIA-143-improve-cancelling-of-workflow-execution
Commit: 884c3915eb3a82c70a6653ae3c7a2f2645050a53
Parents: 1e0a597
Author: Avia Efrat <av...@gigaspaces.com>
Authored: Tue Apr 25 15:00:03 2017 +0300
Committer: Avia Efrat <av...@gigaspaces.com>
Committed: Tue Apr 25 17:01:50 2017 +0300
----------------------------------------------------------------------
aria/cli/commands/executions.py | 4 +--
aria/modeling/orchestration.py | 9 +++--
aria/orchestrator/workflow_runner.py | 1 +
.../workflows/core/events_handler.py | 38 ++++++++++++++------
aria/orchestrator/workflows/events_logging.py | 1 +
tests/modeling/test_models.py | 22 ++++++------
tests/orchestrator/test_workflow_runner.py | 2 +-
.../orchestrator/workflows/core/test_engine.py | 2 +-
8 files changed, 49 insertions(+), 30 deletions(-)
----------------------------------------------------------------------
http://git-wip-us.apache.org/repos/asf/incubator-ariatosca/blob/884c3915/aria/cli/commands/executions.py
----------------------------------------------------------------------
diff --git a/aria/cli/commands/executions.py b/aria/cli/commands/executions.py
index 6a1f02a..10e1b1d 100644
--- a/aria/cli/commands/executions.py
+++ b/aria/cli/commands/executions.py
@@ -178,5 +178,5 @@ def _cancel_execution(workflow_runner, execution_thread, logger, log_iterator):
execution_logging.log_list(log_iterator)
execution_thread.join(1)
except KeyboardInterrupt:
- logger.info('Force-cancelling execution')
- # TODO handle execution (update status etc.) and exit process
+ # TODO think about how to ignore more keyboard interrupt (consider the daemon thing)
+ pass
http://git-wip-us.apache.org/repos/asf/incubator-ariatosca/blob/884c3915/aria/modeling/orchestration.py
----------------------------------------------------------------------
diff --git a/aria/modeling/orchestration.py b/aria/modeling/orchestration.py
index b9a75e9..f163903 100644
--- a/aria/modeling/orchestration.py
+++ b/aria/modeling/orchestration.py
@@ -56,21 +56,20 @@ class ExecutionBase(ModelMixin):
__private_fields__ = ['service_fk',
'service_template']
- TERMINATED = 'terminated'
+ SUCCEEDED = 'succeeded'
FAILED = 'failed'
CANCELLED = 'cancelled'
PENDING = 'pending'
STARTED = 'started'
CANCELLING = 'cancelling'
- FORCE_CANCELLING = 'force_cancelling'
- STATES = (TERMINATED, FAILED, CANCELLED, PENDING, STARTED, CANCELLING, FORCE_CANCELLING)
- END_STATES = (TERMINATED, FAILED, CANCELLED)
+ STATES = (SUCCEEDED, FAILED, CANCELLED, PENDING, STARTED, CANCELLING)
+ END_STATES = (SUCCEEDED, FAILED, CANCELLED)
VALID_TRANSITIONS = {
PENDING: (STARTED, CANCELLED),
STARTED: END_STATES + (CANCELLING,),
- CANCELLING: END_STATES + (FORCE_CANCELLING,)
+ CANCELLING: END_STATES
}
@orm.validates('status')
http://git-wip-us.apache.org/repos/asf/incubator-ariatosca/blob/884c3915/aria/orchestrator/workflow_runner.py
----------------------------------------------------------------------
diff --git a/aria/orchestrator/workflow_runner.py b/aria/orchestrator/workflow_runner.py
index 8f25cce..05471f9 100644
--- a/aria/orchestrator/workflow_runner.py
+++ b/aria/orchestrator/workflow_runner.py
@@ -107,6 +107,7 @@ class WorkflowRunner(object):
def cancel(self):
self._engine.cancel_execution()
+
def _create_execution_model(self, inputs):
execution = models.Execution(
created_at=datetime.utcnow(),
http://git-wip-us.apache.org/repos/asf/incubator-ariatosca/blob/884c3915/aria/orchestrator/workflows/core/events_handler.py
----------------------------------------------------------------------
diff --git a/aria/orchestrator/workflows/core/events_handler.py b/aria/orchestrator/workflows/core/events_handler.py
index 7f61bfa..b5912da 100644
--- a/aria/orchestrator/workflows/core/events_handler.py
+++ b/aria/orchestrator/workflows/core/events_handler.py
@@ -81,6 +81,9 @@ def _task_succeeded(task, *args, **kwargs):
@events.start_workflow_signal.connect
def _workflow_started(workflow_context, *args, **kwargs):
execution = workflow_context.execution
+ # the execution may already be in a cancelling process
+ if execution.status == execution.CANCELLING or execution == execution.CANCELLED:
+ return
execution.status = execution.STARTED
execution.started_at = datetime.utcnow()
workflow_context.execution = execution
@@ -98,7 +101,7 @@ def _workflow_failed(workflow_context, exception, *args, **kwargs):
@events.on_success_workflow_signal.connect
def _workflow_succeeded(workflow_context, *args, **kwargs):
execution = workflow_context.execution
- execution.status = execution.TERMINATED
+ execution.status = execution.SUCCEEDED
execution.ended_at = datetime.utcnow()
workflow_context.execution = execution
@@ -106,22 +109,31 @@ def _workflow_succeeded(workflow_context, *args, **kwargs):
@events.on_cancelled_workflow_signal.connect
def _workflow_cancelled(workflow_context, *args, **kwargs):
execution = workflow_context.execution
- # _workflow_cancelling function may have called this function
- # already
- if execution.status == execution.CANCELLED:
+ status = execution.status
+ # _workflow_cancelling function may have called this function already
+ if status == execution.CANCELLED:
return
- execution.status = execution.CANCELLED
- execution.ended_at = datetime.utcnow()
- workflow_context.execution = execution
+ # the execution may have already been finished
+ elif status == execution.SUCCEEDED or status == execution.FAILED:
+ _log_execution_already_ended(workflow_context, status)
+ else:
+ execution.status = execution.CANCELLED
+ execution.ended_at = datetime.utcnow()
+ workflow_context.execution = execution
@events.on_cancelling_workflow_signal.connect
def _workflow_cancelling(workflow_context, *args, **kwargs):
execution = workflow_context.execution
- if execution.status == execution.PENDING:
+ status = execution.status
+ if status == execution.PENDING:
return _workflow_cancelled(workflow_context=workflow_context)
- execution.status = execution.CANCELLING
- workflow_context.execution = execution
+ # the execution may have already been finished
+ elif status == execution.SUCCEEDED or status == execution.FAILED:
+ _log_execution_already_ended(workflow_context, status)
+ else:
+ execution.status = execution.CANCELLING
+ workflow_context.execution = execution
def _update_node_state_if_necessary(task, is_transitional=False):
@@ -135,3 +147,9 @@ def _update_node_state_if_necessary(task, is_transitional=False):
if state:
node.state = state
task.context.model.node.update(node)
+
+
+def _log_execution_already_ended(workflow_context, status):
+ workflow_context.logger.info(
+ "'{workflow_name}' workflow execution {status} before the cancel request"
+ "was fully processed '".format(workflow_name=workflow_context.workflow_name, status=status))
http://git-wip-us.apache.org/repos/asf/incubator-ariatosca/blob/884c3915/aria/orchestrator/workflows/events_logging.py
----------------------------------------------------------------------
diff --git a/aria/orchestrator/workflows/events_logging.py b/aria/orchestrator/workflows/events_logging.py
index 7d15c81..3ffe18b 100644
--- a/aria/orchestrator/workflows/events_logging.py
+++ b/aria/orchestrator/workflows/events_logging.py
@@ -52,6 +52,7 @@ def _failure_operation_handler(task, traceback, **kwargs):
.format(name=_get_task_name(task), task=task), extra=dict(traceback=traceback)
)
+
@events.start_workflow_signal.connect
def _start_workflow_handler(context, **kwargs):
context.logger.info("Starting '{ctx.workflow_name}' workflow execution".format(ctx=context))
http://git-wip-us.apache.org/repos/asf/incubator-ariatosca/blob/884c3915/tests/modeling/test_models.py
----------------------------------------------------------------------
diff --git a/tests/modeling/test_models.py b/tests/modeling/test_models.py
index d64cdba..2da2154 100644
--- a/tests/modeling/test_models.py
+++ b/tests/modeling/test_models.py
@@ -310,40 +310,40 @@ class TestExecution(object):
Execution.CANCELLED,
Execution.PENDING],
Execution.STARTED: [Execution.FAILED,
- Execution.TERMINATED,
+ Execution.SUCCEEDED,
Execution.CANCELLED,
Execution.CANCELLING,
Execution.STARTED],
Execution.CANCELLING: [Execution.FAILED,
- Execution.TERMINATED,
+ Execution.SUCCEEDED,
Execution.CANCELLED,
Execution.CANCELLING],
Execution.FAILED: [Execution.FAILED],
- Execution.TERMINATED: [Execution.TERMINATED],
+ Execution.SUCCEEDED: [Execution.SUCCEEDED],
Execution.CANCELLED: [Execution.CANCELLED]
}
invalid_transitions = {
Execution.PENDING: [Execution.FAILED,
- Execution.TERMINATED,
+ Execution.SUCCEEDED,
Execution.CANCELLING],
Execution.STARTED: [Execution.PENDING],
Execution.CANCELLING: [Execution.PENDING,
Execution.STARTED],
Execution.FAILED: [Execution.PENDING,
Execution.STARTED,
- Execution.TERMINATED,
+ Execution.SUCCEEDED,
Execution.CANCELLED,
Execution.CANCELLING],
- Execution.TERMINATED: [Execution.PENDING,
- Execution.STARTED,
- Execution.FAILED,
- Execution.CANCELLED,
- Execution.CANCELLING],
+ Execution.SUCCEEDED: [Execution.PENDING,
+ Execution.STARTED,
+ Execution.FAILED,
+ Execution.CANCELLED,
+ Execution.CANCELLING],
Execution.CANCELLED: [Execution.PENDING,
Execution.STARTED,
Execution.FAILED,
- Execution.TERMINATED,
+ Execution.SUCCEEDED,
Execution.CANCELLING],
}
http://git-wip-us.apache.org/repos/asf/incubator-ariatosca/blob/884c3915/tests/orchestrator/test_workflow_runner.py
----------------------------------------------------------------------
diff --git a/tests/orchestrator/test_workflow_runner.py b/tests/orchestrator/test_workflow_runner.py
index 54e940f..7374e50 100644
--- a/tests/orchestrator/test_workflow_runner.py
+++ b/tests/orchestrator/test_workflow_runner.py
@@ -86,7 +86,7 @@ def test_existing_active_executions(request, service, model):
def test_existing_executions_but_no_active_ones(request, service, model):
existing_terminated_execution = models.Execution(
service=service,
- status=models.Execution.TERMINATED,
+ status=models.Execution.SUCCEEDED,
workflow_name='uninstall')
model.execution.put(existing_terminated_execution)
# no active executions exist, so no error should be raised
http://git-wip-us.apache.org/repos/asf/incubator-ariatosca/blob/884c3915/tests/orchestrator/workflows/core/test_engine.py
----------------------------------------------------------------------
diff --git a/tests/orchestrator/workflows/core/test_engine.py b/tests/orchestrator/workflows/core/test_engine.py
index 1a88f13..af9af17 100644
--- a/tests/orchestrator/workflows/core/test_engine.py
+++ b/tests/orchestrator/workflows/core/test_engine.py
@@ -157,7 +157,7 @@ class TestEngine(BaseTest):
execution = workflow_context.execution
assert execution.started_at <= execution.ended_at <= datetime.utcnow()
assert execution.error is None
- assert execution.status == models.Execution.TERMINATED
+ assert execution.status == models.Execution.SUCCEEDED
def test_single_task_successful_execution(self, workflow_context, executor):
@workflow