def on_post(self, req, resp):
sequencer_task = Status.get_status(self.session, 'SEQUENCER_TASK_ID')
if sequencer_task.value is None:
# 3. IF NOT RUNNING: set task id is status table
sequencer_task.value = "123"
sequencer_task.save(self.session)
harvester = PolkascanHarvesterService(
db_session=self.session,
type_registry=TYPE_REGISTRY,
type_registry_file=TYPE_REGISTRY_FILE
)
result = harvester.start_sequencer()
sequencer_task.value = None
sequencer_task.save(self.session)
# 4. IF RUNNING: check if task id is active
else:
# task_result = AsyncResult(sequencer_task)
# task_result = {'status': task_result.status, 'result': task_result.result}
sequencer_task.value = None
sequencer_task.save(self.session)
result = 'Busy'
self.session.commit()
resp.media = {
'result': result
}
def start_sequencer(self):
sequencer_task = Status.get_status(self.session, 'SEQUENCER_TASK_ID')
if sequencer_task.value:
task_result = AsyncResult(sequencer_task.value)
if not task_result or task_result.ready():
sequencer_task.value = None
sequencer_task.save(self.session)
if sequencer_task.value is None:
sequencer_task.value = self.request.id
sequencer_task.save(self.session)
harvester = PolkascanHarvesterService(
db_session=self.session,
type_registry=TYPE_REGISTRY,
type_registry_file=TYPE_REGISTRY_FILE)
try:
result = harvester.start_sequencer()
except BlockIntegrityError as e:
result = {'result': str(e)}
sequencer_task.value = None
sequencer_task.save(self.session)
self.session.commit()
# Check if analytics data need to be generated
#start_generate_analytics.delay()
return result
else:
return {'result': 'Sequencer already running'}
