def init_app(self, app):
"""Initializes the extension for a flask application. This will create
a *GC3Pie* engine and start it in the background using the "gevent"
scheduler.
Parameters
----------
app: flask.Flask
flask application
See also
--------
:class:`tmserver.extensions.gc3pie.engine.BGEngine`
"""
logger.info('initialize GC3Pie extension')
logger.debug('create GC3Pie engine')
store = create_gc3pie_sql_store()
engine = create_gc3pie_engine(store)
bgengine = BgEngine('gevent', engine)
logger.debug('start GC3Pie engine in the background')
bgengine.start(10)
app.extensions['gc3pie'] = {
'engine': bgengine,
'store': store,
}
def submit(self, monitoring_depth, monitoring_interval, force=False):
'''Creates a workflow, submits it to the cluster and monitors its
progress.
Parameters
----------
monitoring_depth: int
number of child tasks that should be monitored
monitoring_interval: int
query status of jobs every `monitoring_interval` seconds
force: bool, opional
whether inactivated stages and steps should be submitted anyways
'''
self._print_logo()
logger.info('submit workflow')
submission_id, user_name = self.register_submission()
with tm.utils.ExperimentSession(self.experiment_id) as session:
experiment = session.query(tm.Experiment).get(self.experiment_id)
workflow_description = experiment.workflow_description
if force:
for stage in workflow_description.stages:
stage.active = True
for step in stage.steps:
step.active = True
workflow = Workflow(
experiment_id=self.experiment_id,
verbosity=self.verbosity,
submission_id=submission_id,
user_name=user_name,
description=workflow_description
)
store = create_gc3pie_sql_store()
store.save(workflow)
self.update_submission(workflow)
engine = create_gc3pie_engine(store)
logger.info('submit and monitor jobs')
try:
self.submit_jobs(
workflow, engine,
monitoring_depth=monitoring_depth,
monitoring_interval=monitoring_interval
)
except KeyboardInterrupt:
logger.info('processing interrupted')
logger.info('killing jobs')
while True:
engine.kill(workflow)
engine.progress()
if workflow.is_terminated:
break
except:
raise
def resubmit(self, monitoring_depth, stage):
'''Resumits a previously created workflow to the cluster and monitors
its status.
Parameters
----------
monitoring_depth: int
number of child tasks that should be monitored
stage: str
stage at which workflow should be submitted
'''
self._print_logo()
store = create_gc3pie_sql_store()
task_id = self.get_task_id_of_last_submission()
with tm.utils.ExperimentSession(self.experiment_id) as session:
experiment = session.query(tm.Experiment).get(self.experiment_id)
workflow_description = experiment.workflow_description
workflow = store.load(task_id)
workflow.update_description(workflow_description)
stage_names = [s.name for s in workflow.description.stages]
try:
start_index = stage_names.index(stage)
workflow.update_stage(start_index)
except IndexError:
raise WorkflowDescriptionError('Unknown stage "%s".' % stage)
logger.info('resubmit workflow at stage #%d "%s"', start_index, stage)
engine = create_gc3pie_engine(store)
logger.info('resubmit and monitor jobs')
try:
self.submit_jobs(
workflow, engine, start_index=start_index,
monitoring_depth=monitoring_depth
)
except KeyboardInterrupt:
logger.info('processing interrupted')
logger.info('killing jobs')
while True:
engine.kill(workflow)
engine.progress()
if workflow.is_terminated:
break
except:
raise
def submit(self, monitoring_depth, monitoring_interval):
self._print_logo()
submission_id, user_name = self.register_submission()
api = self.api_instance
jobs = IndependentJobCollection(api.step_name, submission_id)
run_job_collection = api.create_run_phase(submission_id,
jobs.persistent_id)
run_jobs = api.create_run_jobs(user_name,
run_job_collection,
self.verbosity,
duration=self._submission_args.duration,
memory=self._submission_args.memory,
cores=self._submission_args.cores)
jobs.add(run_jobs)
if api.has_collect_phase:
collect_job_collection = api.create_collect_phase(
submission_id, jobs.persistent_id)
collect_job = api.create_collect_job(user_name,
collect_job_collection,
self.verbosity)
jobs.add(collect_job)
store = create_gc3pie_sql_store()
store.save(jobs)
self.update_submission(jobs)
engine = create_gc3pie_engine(store)
logger.info('submit and monitor jobs')
try:
self.submit_jobs(jobs,
engine,
monitoring_depth=monitoring_depth,
monitoring_interval=monitoring_interval)
except KeyboardInterrupt:
logger.info('processing interrupted')
logger.info('killing jobs')
while True:
engine.kill(jobs)
engine.progress()
if jobs.is_terminated:
break
except Exception:
raise
def resubmit(self, monitoring_depth, monitoring_interval):
self._print_logo()
api = self.api_instance
store = create_gc3pie_sql_store()
job_id = self.get_task_id_of_last_submission()
jobs = store.load(job_id)
engine = create_gc3pie_engine(store)
logger.info('resubmit and monitor jobs')
try:
self.submit_jobs(jobs,
engine,
monitoring_depth=monitoring_depth,
monitoring_interval=monitoring_interval)
except KeyboardInterrupt:
logger.info('processing interrupted')
logger.info('killing jobs')
while True:
engine.kill(jobs)
engine.progress()
if jobs.is_terminated:
break
except Exception:
raise