def test_generate_dummy_dag_code(self):
generator = DAGGenerator()
workflow = TestDAGGenerator.create_workflow()
dag = generator.generator(workflow)
self.assertIsNotNone(dag)
self.assertFalse('DummyOperator' in dag)
self.assertFalse('SendEventOperator' in dag)
def test_generate_bash_dag_code(self):
from datetime import datetime, timedelta
default_args = {
'owner': 'airflow',
'depends_on_past': False,
'start_date': datetime(2015, 12, 1),
'email': ['*****@*****.**'],
'email_on_failure': False,
'email_on_retry': False,
'retries': 1,
'retry_delay': timedelta(minutes=5),
'schedule_interval': None,
}
generator = DAGGenerator()
workflow = TestDAGGenerator.create_bash_workflow()
dag = generator.generator(workflow, 'aa', default_args)
print("\n\n")
print(dag)
def test_generate_bash_dag_code(self):
from datetime import datetime, timedelta
default_args = {
'owner': 'airflow',
'depends_on_past': False,
'start_date': datetime(2015, 12, 1),
'email': ['*****@*****.**'],
'email_on_failure': False,
'email_on_retry': False,
'retries': 1,
'retry_delay': timedelta(minutes=5),
'schedule_interval': None,
}
generator = DAGGenerator()
workflow = TestDAGGenerator.create_bash_workflow()
dag = generator.generator(workflow, 'aa', default_args)
self.assertIsNotNone(dag)
for i in range(3):
self.assertTrue(
"BashOperator(task_id='{0}_job', dag=dag, bash_command='echo \"{0} hello word!\"')".format(i) in dag)
def test_generate_dummy_dag_code(self):
generator = DAGGenerator()
workflow = TestDAGGenerator.create_workflow()
dag = generator.generator(workflow)
print("\n\n")
print(dag)
def test_generate_simple_bash_dag_code(self):
generator = DAGGenerator()
workflow = TestDAGGenerator.create_simple_bash_workflow()
dag = generator.generator(workflow)
self.assertIsNotNone(dag)
print(dag)
class AirFlowScheduler(AbstractScheduler):
def __init__(self, config: SchedulerConfig):
super().__init__(config)
self.dag_generator = DAGGenerator()
self._airflow_client = None
@classmethod
def airflow_dag_id(cls, namespace, workflow_name):
return '{}.{}'.format(namespace, workflow_name)
@classmethod
def dag_id_to_namespace_workflow(cls, dag_id: Text):
tmp = dag_id.split('.')
return tmp[0], tmp[1]
@classmethod
def parse_namespace_workflow_name(cls, dag_id: Text):
index = dag_id.find('.')
return dag_id[0:index - 1], dag_id[index + 1:]
@classmethod
def airflow_state_to_state(cls, state):
if State.SUCCESS == state:
return job_meta.State.FINISHED
elif State.FAILED == state:
return job_meta.State.FAILED
elif State.RUNNING == state:
return job_meta.State.RUNNING
elif State.KILLING == state:
return job_meta.State.KILLING
elif State.KILLED == state or State.SHUTDOWN == state:
return job_meta.State.KILLED
else:
return job_meta.State.INIT
@classmethod
def dag_exist(cls, dag_id):
with create_session() as session:
dag = session.query(DagModel).filter(
DagModel.dag_id == dag_id).first()
if dag is None:
return False
else:
return True
@classmethod
def dagrun_exist(cls, run_id):
with create_session() as session:
dag_run = session.query(DagRun).filter(
DagRun.run_id == run_id).first()
if dag_run is None:
return False
else:
return True
@property
def airflow_client(self):
if self._airflow_client is None:
self._airflow_client = EventSchedulerClient(
server_uri=self.config.notification_service_uri(),
namespace=SCHEDULER_NAMESPACE)
return self._airflow_client
def submit_workflow(self,
workflow: Workflow,
project_desc: ProjectDesc,
args: Dict = None) -> WorkflowInfo:
workflow_name = workflow.workflow_name
dag_id = self.airflow_dag_id(project_desc.project_name,
workflow.workflow_name)
code_text = self.dag_generator.generator(workflow, dag_id, args)
workflow.workflow_name = workflow_name
deploy_path = self.config.properties().get('airflow_deploy_path')
if deploy_path is None:
raise Exception("airflow_deploy_path config not set!")
if not os.path.exists(deploy_path):
os.makedirs(deploy_path)
airflow_file_path = os.path.join(deploy_path, dag_id + '.py')
if os.path.exists(airflow_file_path):
os.remove(airflow_file_path)
with NamedTemporaryFile(mode='w+t',
prefix=dag_id,
suffix='.py',
dir='/tmp',
delete=False) as f:
f.write(code_text)
os.rename(f.name, airflow_file_path)
self.airflow_client.trigger_parse_dag(airflow_file_path)
return WorkflowInfo(namespace=project_desc.project_name,
workflow_name=workflow.workflow_name)
def delete_workflow(self, project_name: Text,
workflow_name: Text) -> Optional[WorkflowInfo]:
dag_id = self.airflow_dag_id(project_name, workflow_name)
if not self.dag_exist(dag_id):
return None
deploy_path = self.config.properties().get('airflow_deploy_path')
if deploy_path is None:
raise Exception("airflow_deploy_path config not set!")
airflow_file_path = os.path.join(deploy_path, dag_id + '.py')
if os.path.exists(airflow_file_path):
os.remove(airflow_file_path)
# stop all workflow executions
self.kill_all_workflow_execution(project_name, workflow_name)
# clean db meta
with create_session() as session:
dag = session.query(DagModel).filter(
DagModel.dag_id == dag_id).first()
session.query(DagTag).filter(DagTag.dag_id == dag_id).delete()
session.query(DagModel).filter(DagModel.dag_id == dag_id).delete()
session.query(DagCode).filter(
DagCode.fileloc_hash == DagCode.dag_fileloc_hash(
dag.fileloc)).delete()
session.query(SerializedDagModel).filter(
SerializedDagModel.dag_id == dag_id).delete()
session.query(DagRun).filter(DagRun.dag_id == dag_id).delete()
session.query(TaskState).filter(
TaskState.dag_id == dag_id).delete()
session.query(TaskInstance).filter(
TaskInstance.dag_id == dag_id).delete()
session.query(TaskExecution).filter(
TaskExecution.dag_id == dag_id).delete()
return WorkflowInfo(namespace=project_name,
workflow_name=workflow_name)
def pause_workflow_scheduling(self, project_name: Text,
workflow_name: Text) -> WorkflowInfo:
dag_id = self.airflow_dag_id(project_name, workflow_name)
DagModel.get_dagmodel(dag_id=dag_id).set_is_paused(is_paused=True)
return WorkflowInfo(namespace=project_name,
workflow_name=workflow_name)
def resume_workflow_scheduling(self, project_name: Text,
workflow_name: Text) -> WorkflowInfo:
dag_id = self.airflow_dag_id(project_name, workflow_name)
DagModel.get_dagmodel(dag_id=dag_id).set_is_paused(is_paused=False)
return WorkflowInfo(namespace=project_name,
workflow_name=workflow_name)
def get_workflow(self, project_name: Text,
workflow_name: Text) -> Optional[WorkflowInfo]:
dag_id = self.airflow_dag_id(project_name, workflow_name)
with create_session() as session:
dag = session.query(DagModel).filter(
DagModel.dag_id == dag_id).first()
if dag is None:
return None
else:
return WorkflowInfo(namespace=project_name,
workflow_name=workflow_name)
def list_workflows(self, project_name: Text) -> List[WorkflowInfo]:
with create_session() as session:
dag_list = session.query(DagModel).filter(
DagModel.dag_id.startswith('{}.'.format(project_name))).all()
if dag_list is None:
return []
else:
result = []
for dag in dag_list:
ns, workflow_name = self.parse_namespace_workflow_name(
dag.dag_id)
result.append(
WorkflowInfo(namespace=project_name,
workflow_name=workflow_name))
return result
def start_new_workflow_execution(
self, project_name: Text,
workflow_name: Text) -> Optional[WorkflowExecutionInfo]:
dag_id = self.airflow_dag_id(project_name, workflow_name)
deploy_path = self.config.properties().get('airflow_deploy_path')
if deploy_path is None:
raise Exception("airflow_deploy_path config not set!")
if not self.dag_exist(dag_id):
return None
context: ExecutionContext = self.airflow_client.schedule_dag(dag_id)
return WorkflowExecutionInfo(workflow_info=WorkflowInfo(
namespace=project_name, workflow_name=workflow_name),
execution_id=context.dagrun_id,
state=job_meta.State.INIT)
def kill_all_workflow_execution(
self, project_name: Text,
workflow_name: Text) -> List[WorkflowExecutionInfo]:
workflow_execution_list = self.list_workflow_executions(
project_name, workflow_name)
for we in workflow_execution_list:
if we.state == job_meta.State.RUNNING:
self.kill_workflow_execution(we.execution_id)
return workflow_execution_list
def kill_workflow_execution(
self, execution_id: Text) -> Optional[WorkflowExecutionInfo]:
with create_session() as session:
dag_run = session.query(DagRun).filter(
DagRun.run_id == execution_id).first()
if dag_run is None:
return None
project_name, workflow_name = self.dag_id_to_namespace_workflow(
dag_run.dag_id)
context: ExecutionContext = ExecutionContext(execution_id)
current_context = self.airflow_client.stop_dag_run(
dag_run.dag_id, context)
return WorkflowExecutionInfo(
workflow_info=WorkflowInfo(namespace=project_name,
workflow_name=workflow_name),
execution_id=current_context.dagrun_id,
state=job_meta.State.KILLING)
def get_workflow_execution(
self, execution_id: Text) -> Optional[WorkflowExecutionInfo]:
with create_session() as session:
dag_run = session.query(DagRun).filter(
DagRun.run_id == execution_id).first()
if dag_run is None:
return None
else:
state = self.airflow_state_to_state(dag_run.state)
project_name, workflow_name = self.dag_id_to_namespace_workflow(
dag_run.dag_id)
return WorkflowExecutionInfo(workflow_info=WorkflowInfo(
namespace=project_name, workflow_name=workflow_name),
execution_id=dag_run.run_id,
state=state)
def list_workflow_executions(
self, project_name: Text,
workflow_name: Text) -> List[WorkflowExecutionInfo]:
dag_id = self.airflow_dag_id(project_name, workflow_name)
with create_session() as session:
dagrun_list = session.query(DagRun).filter(
DagRun.dag_id == dag_id).all()
if dagrun_list is None:
return []
else:
result = []
for dagrun in dagrun_list:
state = self.airflow_state_to_state(dagrun.state)
result.append(
WorkflowExecutionInfo(workflow_info=WorkflowInfo(
namespace=project_name,
workflow_name=workflow_name),
execution_id=dagrun.run_id,
state=state))
return result
def start_job(self, job_name: Text,
execution_id: Text) -> Optional[JobInfo]:
with create_session() as session:
dag_run = session.query(DagRun).filter(
DagRun.run_id == execution_id).first()
if dag_run is None:
return None
if dag_run.state != State.RUNNING:
raise Exception(
'execution: {} state: {} can not trigger job.'.format(
execution_id, dag_run.state))
task = dag_run.get_task_instance(job_name, session)
if task is None:
return None
if task.state in State.unfinished:
raise Exception('job:{} state: {} can not start!'.format(
job_name, task.state))
self.airflow_client.schedule_task(
dag_id=dag_run.dag_id,
task_id=job_name,
action=SchedulingAction.START,
context=ExecutionContext(dagrun_id=dag_run.run_id))
project_name, workflow_name = self.dag_id_to_namespace_workflow(
dag_run.dag_id)
return JobInfo(
job_name=job_name,
state=self.airflow_state_to_state(task.state),
workflow_execution=WorkflowExecutionInfo(
workflow_info=WorkflowInfo(namespace=project_name,
workflow_name=workflow_name),
execution_id=dag_run.run_id,
state=self.airflow_state_to_state(dag_run.state)))
def stop_job(self, job_name: Text,
execution_id: Text) -> Optional[JobInfo]:
with create_session() as session:
dag_run = session.query(DagRun).filter(
DagRun.run_id == execution_id).first()
if dag_run is None:
return None
if dag_run.state != State.RUNNING:
raise Exception(
'execution: {} state: {} can not trigger job.'.format(
execution_id, dag_run.state))
task = dag_run.get_task_instance(job_name, session)
if task is None:
return None
if task.state != State.RUNNING:
raise Exception('job:{} state: {} can not stop!'.format(
job_name, task.state))
self.airflow_client.schedule_task(
dag_id=dag_run.dag_id,
task_id=job_name,
action=SchedulingAction.STOP,
context=ExecutionContext(dagrun_id=dag_run.run_id))
project_name, workflow_name = self.dag_id_to_namespace_workflow(
dag_run.dag_id)
return JobInfo(
job_name=job_name,
state=self.airflow_state_to_state(task.state),
workflow_execution=WorkflowExecutionInfo(
workflow_info=WorkflowInfo(namespace=project_name,
workflow_name=workflow_name),
execution_id=dag_run.run_id,
state=self.airflow_state_to_state(dag_run.state)))
def restart_job(self, job_name: Text,
execution_id: Text) -> Optional[JobInfo]:
with create_session() as session:
dag_run = session.query(DagRun).filter(
DagRun.run_id == execution_id).first()
if dag_run is None:
return None
if dag_run.state != State.RUNNING:
raise Exception(
'execution: {} state: {} can not trigger job.'.format(
execution_id, dag_run.state))
task = dag_run.get_task_instance(job_name, session)
if task is None:
return None
self.airflow_client.schedule_task(
dag_id=dag_run.dag_id,
task_id=job_name,
action=SchedulingAction.RESTART,
context=ExecutionContext(dagrun_id=dag_run.run_id))
project_name, workflow_name = self.dag_id_to_namespace_workflow(
dag_run.dag_id)
return JobInfo(
job_name=job_name,
state=self.airflow_state_to_state(task.state),
workflow_execution=WorkflowExecutionInfo(
workflow_info=WorkflowInfo(namespace=project_name,
workflow_name=workflow_name),
execution_id=dag_run.run_id,
state=self.airflow_state_to_state(dag_run.state)))
def get_job(self, job_name: Text, execution_id: Text) -> Optional[JobInfo]:
with create_session() as session:
dag_run = session.query(DagRun).filter(
DagRun.run_id == execution_id).first()
if dag_run is None:
return None
task = session.query(TaskInstance).filter(
TaskInstance.dag_id == dag_run.dag_id,
TaskInstance.execution_date == dag_run.execution_date,
TaskInstance.task_id == job_name).first()
if task is None:
return None
else:
project_name, workflow_name = self.dag_id_to_namespace_workflow(
dag_run.dag_id)
return JobInfo(job_name=job_name,
state=self.airflow_state_to_state(task.state),
workflow_execution=WorkflowExecutionInfo(
workflow_info=WorkflowInfo(
namespace=project_name,
workflow_name=workflow_name),
execution_id=dag_run.run_id,
state=self.airflow_state_to_state(
dag_run.state)))
def list_jobs(self, execution_id: Text) -> List[JobInfo]:
with create_session() as session:
dag_run = session.query(DagRun).filter(
DagRun.run_id == execution_id).first()
if dag_run is None:
return None
task_list = session.query(TaskInstance).filter(
TaskInstance.dag_id == dag_run.dag_id,
TaskInstance.execution_date == dag_run.execution_date).all()
if task_list is None:
return []
else:
result = []
project_name, workflow_name = self.dag_id_to_namespace_workflow(
dag_run.dag_id)
for task in task_list:
job = JobInfo(
job_name=task.task_id,
state=self.airflow_state_to_state(task.state),
workflow_execution=WorkflowExecutionInfo(
workflow_info=WorkflowInfo(
namespace=project_name,
workflow_name=workflow_name),
execution_id=dag_run.run_id,
state=self.airflow_state_to_state(dag_run.state)))
result.append(job)
return result