def _task_listener(state, details):
"""Store the result of the task under the given flow in the log
book so that it can be retrieved later.
"""
runner = details['runner']
flow = details['flow']
LOG.debug("Recording %s of %s has finished state %s",
runner, flow, state)
metadata = {}
flow_details = self._logbook[flow.uuid]
if state in (states.SUCCESS, states.FAILURE):
metadata['result'] = runner.result
if runner.uuid not in flow_details:
metadata['states'] = [state]
metadata['version'] = runner.version
flow_details.add_task(runner.uuid, metadata)
else:
details = flow_details[runner.uuid]
immediate_version = runner.version
recorded_version = details.metadata.get('version')
if recorded_version is not None:
if not utils.is_version_compatible(recorded_version,
immediate_version):
LOG.warn("Updating a task with a different version"
" than the one being listened to (%s != %s)",
recorded_version, immediate_version)
past_states = details.metadata.get('states', [])
if state not in past_states:
past_states.append(state)
details.metadata['states'] = past_states
if metadata:
details.metadata.update(metadata)
def _get_details(self, flow_details, runner):
if runner.uuid not in flow_details:
return (False, None)
details = flow_details[runner.uuid]
has_completed = False
for state in details.metadata.get('states', []):
if state in (states.SUCCESS, states.FAILURE):
has_completed = True
break
if not has_completed:
return (False, None)
immediate_version = runner.version
recorded_version = details.metadata.get('version')
if recorded_version is not None:
if not utils.is_version_compatible(recorded_version,
immediate_version):
LOG.warn("Fetching runner metadata from a task with"
" a different version from the one being"
" processed (%s != %s)", recorded_version,
immediate_version)
details = self._reconcile_versions(immediate_version, details)
return (True, details)