def _add_benchmarks(self, task_group):
with TaskGroup(task_group, prefix_group_id=True,
dag=self.dag) as benchmarks:
benchmark_tasks = self._get_e2e_benchmarks(
task_group).get_benchmarks()
chain(*benchmark_tasks)
return benchmarks
def test_chain_not_support_type(self):
dag = DAG(dag_id='test_chain', start_date=datetime.now())
[op1, op2] = [
DummyOperator(task_id='t{i}'.format(i=i), dag=dag)
for i in range(1, 3)
]
with self.assertRaises(TypeError):
chain([op1, op2], 1) # noqa
def test_chain_different_length_iterable(self):
dag = DAG(dag_id='test_chain', start_date=datetime.now())
[op1, op2, op3, op4, op5] = [
DummyOperator(task_id='t{i}'.format(i=i), dag=dag)
for i in range(1, 6)
]
with self.assertRaises(AirflowException):
chain([op1, op2], [op3, op4, op5])
def test_chain(self):
dag = DAG(dag_id='test_chain', start_date=datetime.now())
[op1, op2, op3, op4, op5, op6] = [DummyOperator(task_id=f't{i}', dag=dag) for i in range(1, 7)]
chain(op1, [op2, op3], [op4, op5], op6)
assert {op2, op3} == set(op1.get_direct_relatives(upstream=False))
assert [op4] == op2.get_direct_relatives(upstream=False)
assert [op5] == op3.get_direct_relatives(upstream=False)
assert {op4, op5} == set(op6.get_direct_relatives(upstream=True))
def build(self):
installer = self._get_openshift_installer()
install_cluster = installer.get_install_task()
with TaskGroup("benchmarks", prefix_group_id=False, dag=self.dag) as benchmarks:
benchmark_tasks = self._get_e2e_benchmarks().get_benchmarks()
chain(*benchmark_tasks)
if self.config.cleanup_on_success:
cleanup_cluster = installer.get_cleanup_task()
install_cluster >> benchmarks >> cleanup_cluster
else:
install_cluster >> benchmarks
def test_chain(self):
dag = DAG(dag_id='test_chain', start_date=datetime.now())
[op1, op2, op3, op4, op5, op6] = [
DummyOperator(task_id='t{i}'.format(i=i), dag=dag)
for i in range(1, 7)
]
chain(op1, [op2, op3], [op4, op5], op6)
self.assertCountEqual([op2, op3], op1.get_direct_relatives(upstream=False))
self.assertEqual([op4], op2.get_direct_relatives(upstream=False))
self.assertEqual([op5], op3.get_direct_relatives(upstream=False))
self.assertCountEqual([op4, op5], op6.get_direct_relatives(upstream=True))
def build(self):
installer = self._get_openshift_installer()
install_cluster = installer.get_install_task()
connect_to_platform = self._get_platform_connector().get_task()
final_status=final_dag_status.get_task(self.dag)
with TaskGroup("benchmarks", prefix_group_id=False, dag=self.dag) as benchmarks:
benchmark_tasks = self._get_e2e_benchmarks().get_benchmarks()
chain(*benchmark_tasks)
if self.config.cleanup_on_success:
cleanup_cluster = installer.get_cleanup_task()
install_cluster >> connect_to_platform >> benchmarks >> cleanup_cluster >> final_status
else:
install_cluster >> connect_to_platform >> benchmarks
def build(self):
installer = self._get_openshift_installer()
initialize_cluster = installer.initialize_cluster_task()
connect_to_platform = self._get_platform_connector().get_task()
with TaskGroup("utils", prefix_group_id=False, dag=self.dag) as utils:
utils_tasks = self._get_scale_ci_diagnosis().get_utils()
chain(*utils_tasks)
with TaskGroup("benchmarks", prefix_group_id=False, dag=self.dag) as benchmarks:
benchmark_tasks = self._get_e2e_benchmarks().get_benchmarks()
chain(*benchmark_tasks)
initialize_cluster >> connect_to_platform >> benchmarks >> utils
def build(self):
installer = self._get_openshift_installer()
install_cluster = installer.get_install_task()
connect_to_platform = self._get_platform_connector().get_task()
with TaskGroup("benchmarks", prefix_group_id=False,
dag=self.dag) as benchmarks:
benchmark_tasks = self._get_e2e_benchmarks().get_benchmarks()
chain(*benchmark_tasks)
rosa_post_installation = self._get_rosa_postinstall_setup(
)._get_rosa_postinstallation()
if self.config.cleanup_on_success:
cleanup_cluster = installer.get_cleanup_task()
install_cluster >> rosa_post_installation >> connect_to_platform >> benchmarks >> cleanup_cluster
else:
install_cluster >> rosa_post_installation >> connect_to_platform >> benchmarks
# [END howto_operator_gcp_transfer_wait_operation]
# [START howto_operator_gcp_transfer_cancel_operation]
cancel_operation = CloudDataTransferServiceCancelOperationOperator(
task_id="cancel_operation",
operation_name="{{task_instance.xcom_pull("
"'wait_for_second_operation_to_start', key='sensed_operations')[0]['name']}}",
)
# [END howto_operator_gcp_transfer_cancel_operation]
# [START howto_operator_gcp_transfer_delete_job]
delete_transfer_from_aws_job = CloudDataTransferServiceDeleteJobOperator(
task_id="delete_transfer_from_aws_job",
job_name=
"{{task_instance.xcom_pull('create_transfer_job_from_aws')['name']}}",
project_id=GCP_PROJECT_ID,
)
# [END howto_operator_gcp_transfer_delete_job]
chain(
create_transfer_job_from_aws,
wait_for_operation_to_start,
pause_operation,
list_operations,
get_operation,
resume_operation,
wait_for_operation_to_end,
cancel_operation,
delete_transfer_from_aws_job,
)
"sourceFormat": "DATASTORE_BACKUP",
"compression": "NONE",
"csvOptions": {
"skipLeadingRows": 1
},
},
},
)
# [END howto_operator_create_external_table_multiple_types]
read_data_from_gcs_multiple_types = BigQueryInsertJobOperator(
task_id="execute_query",
configuration={
"query": {
"query":
f"SELECT COUNT(*) FROM `{GCP_PROJECT_ID}.{DATASET_NAME}.firestore_data`",
"useLegacySql": False,
}
},
)
chain(
# Firestore
export_database_to_gcs,
# BigQuery
create_dataset,
create_external_table_multiple_types,
read_data_from_gcs_multiple_types,
delete_dataset,
)
dag_id=DAG_ID,
default_args=default_args,
description=
"An example DAG demonstrating lineage emission within an Airflow DAG.",
schedule_interval=None,
start_date=days_ago(1),
catchup=False,
dagrun_timeout=timedelta(minutes=5),
tags=["datahub demo"],
) as dag:
emit_lineage_task = DatahubEmitterOperator(
task_id="emit_lineage",
datahub_conn_id="datahub_rest",
mces=[
builder.make_lineage_mce(upstream_urns=[
builder.make_dataset_urn("glue", "mydb.tableA"),
builder.make_dataset_urn("glue", "mydb.tableB"),
],
downstream_urn=builder.make_dataset_urn(
"glue",
"mydb.tableC",
))
],
)
get_airflow_cfg_operator = PythonOperator(
task_id="get_airflow_cfg_task", python_callable=print_airflow_cfg)
get_print_env_vars_operator = PythonOperator(
task_id="get_print_env_vars_task", python_callable=print_env_vars)
chain(emit_lineage_task, get_airflow_cfg_operator, get_print_env_vars_operator)
'type': 'video',
'fields': 'items/id/videoId',
},
google_api_response_via_xcom='video_ids_response',
s3_destination_key=f'{S3_BUCKET_NAME}/youtube_search.json',
s3_overwrite=True,
)
# [END howto_transfer_google_api_youtube_search_to_s3]
task_transform_video_ids = transform_video_ids()
# [START howto_transfer_google_api_youtube_list_to_s3]
task_video_data_to_s3 = GoogleApiToS3Operator(
task_id='video_data_to_s3',
google_api_service_name='youtube',
google_api_service_version='v3',
google_api_endpoint_path='youtube.videos.list',
google_api_endpoint_params={
'part': YOUTUBE_VIDEO_PARTS,
'maxResults': 50,
'fields': YOUTUBE_VIDEO_FIELDS,
},
google_api_endpoint_params_via_xcom='video_ids',
s3_destination_key=f'{S3_BUCKET_NAME}/youtube_videos.json',
s3_overwrite=True,
)
# [END howto_transfer_google_api_youtube_list_to_s3]
chain(task_video_ids_to_s3, task_transform_video_ids,
task_video_data_to_s3)
zone=GCE_ZONE,
resource_id=GCE_INSTANCE,
body={
'machineType':
f'zones/{GCE_ZONE}/machineTypes/{GCE_SHORT_MACHINE_TYPE_NAME}'
},
task_id='gcp_compute_set_machine_type',
)
# [END howto_operator_gce_set_machine_type]
# Duplicate set machine type for idempotence testing
# [START howto_operator_gce_set_machine_type_no_project_id]
gce_set_machine_type2 = ComputeEngineSetMachineTypeOperator(
zone=GCE_ZONE,
resource_id=GCE_INSTANCE,
body={
'machineType':
f'zones/{GCE_ZONE}/machineTypes/{GCE_SHORT_MACHINE_TYPE_NAME}'
},
task_id='gcp_compute_set_machine_type2',
)
# [END howto_operator_gce_set_machine_type_no_project_id]
chain(
gce_instance_start,
gce_instance_start2,
gce_instance_stop,
gce_instance_stop2,
gce_set_machine_type,
gce_set_machine_type2,
)
)
# [START howto_operator_emr_add_steps]
step_adder = EmrAddStepsOperator(
task_id='add_steps',
job_flow_id=cluster_creator.output,
steps=SPARK_STEPS,
)
# [END howto_operator_emr_add_steps]
# [START howto_sensor_emr_step_sensor]
step_checker = EmrStepSensor(
task_id='watch_step',
job_flow_id=cluster_creator.output,
step_id="{{ task_instance.xcom_pull(task_ids='add_steps', key='return_value')[0] }}",
)
# [END howto_sensor_emr_step_sensor]
# [START howto_operator_emr_terminate_job_flow]
cluster_remover = EmrTerminateJobFlowOperator(
task_id='remove_cluster',
job_flow_id=cluster_creator.output,
)
# [END howto_operator_emr_terminate_job_flow]
chain(
step_adder,
step_checker,
cluster_remover,
)
)
# [END howto_operator_glue_crawler]
# [START howto_sensor_glue_crawler]
wait_for_crawl = GlueCrawlerSensor(task_id='wait_for_crawl', crawler_name=GLUE_CRAWLER_NAME)
# [END howto_sensor_glue_crawler]
# [START howto_operator_glue]
job_name = 'example_glue_job'
submit_glue_job = GlueJobOperator(
task_id='submit_glue_job',
job_name=job_name,
wait_for_completion=False,
script_location=f's3://{GLUE_EXAMPLE_S3_BUCKET}/etl_script.py',
s3_bucket=GLUE_EXAMPLE_S3_BUCKET,
iam_role_name=GLUE_CRAWLER_ROLE.split('/')[-1],
create_job_kwargs={'GlueVersion': '3.0', 'NumberOfWorkers': 2, 'WorkerType': 'G.1X'},
)
# [END howto_operator_glue]
# [START howto_sensor_glue]
wait_for_job = GlueJobSensor(
task_id='wait_for_job',
job_name=job_name,
# Job ID extracted from previous Glue Job Operator task
run_id=submit_glue_job.output,
)
# [END howto_sensor_glue]
chain(setup_upload_artifacts_to_s3, crawl_s3, wait_for_crawl, submit_glue_job, wait_for_job)
SNS_TOPIC_ARN = getenv("SNS_TOPIC_ARN",
"arn:aws:sns:<region>:<account number>:MyTopic")
RDS_DB_IDENTIFIER = getenv("RDS_DB_IDENTIFIER", "database-identifier")
with DAG(
dag_id='example_rds_event',
schedule_interval=None,
start_date=datetime(2021, 1, 1),
tags=['example'],
catchup=False,
) as dag:
# [START howto_operator_rds_create_event_subscription]
create_subscription = RdsCreateEventSubscriptionOperator(
task_id='create_subscription',
subscription_name=SUBSCRIPTION_NAME,
sns_topic_arn=SNS_TOPIC_ARN,
source_type='db-instance',
source_ids=[RDS_DB_IDENTIFIER],
event_categories=['availability'],
)
# [END howto_operator_rds_create_event_subscription]
# [START howto_operator_rds_delete_event_subscription]
delete_subscription = RdsDeleteEventSubscriptionOperator(
task_id='delete_subscription',
subscription_name=SUBSCRIPTION_NAME,
)
# [END howto_operator_rds_delete_event_subscription]
chain(create_subscription, delete_subscription)
delete_task = DmsDeleteTaskOperator(
task_id='delete_task',
replication_task_arn=create_task.output,
trigger_rule='all_done',
)
# [END howto_operator_dms_delete_task]
delete_db_instance = RdsDeleteDbInstanceOperator(
task_id='delete_db_instance',
db_instance_identifier=RDS_INSTANCE_NAME,
rds_kwargs={
"SkipFinalSnapshot": True,
},
trigger_rule='all_done',
)
chain(
create_db_instance,
create_sample_table(),
create_dms_assets(),
create_task,
start_task,
describe_tasks,
await_task_start,
stop_task,
await_task_stop,
delete_task,
delete_dms_assets(),
delete_db_instance,
)
with DAG(
dag_id='example_ec2',
start_date=datetime(2021, 1, 1),
tags=['example'],
catchup=False,
) as dag:
# [START howto_operator_ec2_start_instance]
start_instance = EC2StartInstanceOperator(
task_id="ec2_start_instance",
instance_id=INSTANCE_ID,
)
# [END howto_operator_ec2_start_instance]
# [START howto_sensor_ec2_instance_state]
instance_state = EC2InstanceStateSensor(
task_id="ec2_instance_state",
instance_id=INSTANCE_ID,
target_state="running",
)
# [END howto_sensor_ec2_instance_state]
# [START howto_operator_ec2_stop_instance]
stop_instance = EC2StopInstanceOperator(
task_id="ec2_stop_instance",
instance_id=INSTANCE_ID,
)
# [END howto_operator_ec2_stop_instance]
chain(start_instance, instance_state, stop_instance)
source=SOURCE_NAME,
flow_name=FLOW_NAME,
source_field="LastModifiedDate",
filter_date="3000-01-01", # Future date, so no records to dump
)
# [END howto_operator_appflow_run_after]
# [START howto_operator_appflow_shortcircuit]
campaign_dump_short_circuit = AppflowRecordsShortCircuitOperator(
task_id="campaign_dump_short_circuit",
flow_name=FLOW_NAME,
appflow_run_task_id=
"campaign_dump_after", # Should shortcircuit, no records expected
)
# [END howto_operator_appflow_shortcircuit]
should_be_skipped = BashOperator(
task_id="should_be_skipped",
bash_command="echo 1",
)
chain(
campaign_dump,
campaign_dump_full,
campaign_dump_daily,
campaign_dump_before,
campaign_dump_after,
campaign_dump_short_circuit,
should_be_skipped,
)
},
}
# [END howto_operator_emr_eks_config]
with DAG(
dag_id='example_emr_eks',
start_date=datetime(2021, 1, 1),
tags=['example'],
catchup=False,
) as dag:
# [START howto_operator_emr_container]
job_starter = EmrContainerOperator(
task_id="start_job",
virtual_cluster_id=VIRTUAL_CLUSTER_ID,
execution_role_arn=JOB_ROLE_ARN,
release_label="emr-6.3.0-latest",
job_driver=JOB_DRIVER_ARG,
configuration_overrides=CONFIGURATION_OVERRIDES_ARG,
name="pi.py",
wait_for_completion=False,
)
# [END howto_operator_emr_container]
# [START howto_sensor_emr_container]
job_waiter = EmrContainerSensor(task_id="job_waiter",
virtual_cluster_id=VIRTUAL_CLUSTER_ID,
job_id=str(job_starter.output))
# [END howto_sensor_emr_container]
chain(job_starter, job_waiter)
update_queue = CloudTasksQueueUpdateOperator(
task_queue=Queue(stackdriver_logging_config=dict(sampling_ratio=1)),
location=LOCATION,
queue_name=QUEUE_ID,
update_mask={"paths": ["stackdriver_logging_config.sampling_ratio"]},
task_id="update_queue",
)
list_queue = CloudTasksQueuesListOperator(location=LOCATION,
task_id="list_queue")
chain(
create_queue,
update_queue,
pause_queue,
resume_queue,
purge_queue,
get_queue,
list_queue,
delete_queue,
)
# Tasks operations
create_task = CloudTasksTaskCreateOperator(
location=LOCATION,
queue_name=QUEUE_ID,
task=TASK,
task_name=TASK_NAME,
retry=Retry(maximum=10.0),
timeout=5,
task_id="create_task_to_run",
)
configuration={
"query": {
"query": f"SELECT COUNT(*) FROM `{GCP_PROJECT_ID}.{DATASET_NAME}.{TABLE_NAME}`",
"useLegacySql": False,
}
},
)
delete_bucket = GCSDeleteBucketOperator(
task_id="delete_bucket",
bucket_name=GCS_BUCKET,
)
delete_dataset = BigQueryDeleteDatasetOperator(
task_id="delete_dataset",
project_id=GCP_PROJECT_ID,
dataset_id=DATASET_NAME,
delete_contents=True,
)
chain(
create_bucket,
create_dataset,
create_table,
run_operator,
load_csv,
read_data_from_gcs_many_chunks,
delete_bucket,
delete_dataset,
)
args = {"owner": "airflow", "start_date": START_DATE}
for dag_no in range(1, DAG_COUNT + 1):
dag = DAG(
dag_id=safe_dag_id("__".join([
DAG_PREFIX,
f"SHAPE={SHAPE.name.lower()}",
f"DAGS_COUNT={dag_no}_of_{DAG_COUNT}",
f"TASKS_COUNT=${TASKS_COUNT}",
f"START_DATE=${START_DATE_ENV}",
f"SCHEDULE_INTERVAL=${SCHEDULE_INTERVAL_ENV}",
])),
is_paused_upon_creation=False,
default_args=args,
schedule_interval=SCHEDULE_INTERVAL,
)
tasks = [
BashOperator(task_id="__".join(["tasks", f"{i}_of_{TASKS_COUNT}"]),
bash_command='echo test"',
dag=dag) for i in range(1, TASKS_COUNT + 1)
]
if SHAPE == DagShape.NO_STRUCTURE:
# Do nothing
pass
elif SHAPE == DagShape.LINEAR:
chain(*tasks)
globals()[f"dag_{dag_no}"] = dag
python_callable=load_users_data)
load_tweets_data = PythonOperator(task_id="load_tweets_data",
python_callable=load_tweets_data)
load_mentions_data = PythonOperator(task_id="load_mentions_data",
python_callable=load_mentions_data)
load_hashtags_data = PythonOperator(task_id="load_hashtags_data",
python_callable=load_hashtags_data)
load_urls_data = PythonOperator(task_id="load_urls_data",
python_callable=load_urls_data)
load_medias_data = PythonOperator(task_id="load_medias_data",
python_callable=load_medias_data)
load_scores_data = PythonOperator(task_id="load_scores_data",
python_callable=load_scores_data)
chain(parse_tweets_data, score_users, [
transform_users_data, transform_tweets_data, transform_entities_data,
transform_scores_data
], [
load_users_data, load_tweets_data,
[
load_mentions_data, load_hashtags_data, load_medias_data,
load_urls_data
], load_scores_data
])
# [START howto_operator_get_build_trigger]
get_build_trigger = CloudBuildGetBuildTriggerOperator(
task_id="get_build_trigger",
project_id=GCP_PROJECT_ID,
trigger_id=create_build_trigger.output['id'],
)
# [END howto_operator_get_build_trigger]
# [START howto_operator_delete_build_trigger]
delete_build_trigger = CloudBuildDeleteBuildTriggerOperator(
task_id="delete_build_trigger",
project_id=GCP_PROJECT_ID,
trigger_id=create_build_trigger.output['id'],
)
# [END howto_operator_delete_build_trigger]
# [START howto_operator_list_build_triggers]
list_build_triggers = CloudBuildListBuildTriggersOperator(
task_id="list_build_triggers", project_id=GCP_PROJECT_ID, location="global", page_size=5
)
# [END howto_operator_list_build_triggers]
chain(
create_build_trigger,
run_build_trigger,
update_build_trigger,
get_build_trigger,
delete_build_trigger,
list_build_triggers,
)
from airflow.utils import dates
args = {
'owner': 'airflow',
}
dag = DAG(
dag_id='example_short_circuit_operator',
default_args=args,
start_date=dates.days_ago(2),
tags=['example'],
)
cond_true = ShortCircuitOperator(
task_id='condition_is_True',
python_callable=lambda: True,
dag=dag,
)
cond_false = ShortCircuitOperator(
task_id='condition_is_False',
python_callable=lambda: False,
dag=dag,
)
ds_true = [DummyOperator(task_id='true_' + str(i), dag=dag) for i in [1, 2]]
ds_false = [DummyOperator(task_id='false_' + str(i), dag=dag) for i in [1, 2]]
chain(cond_true, *ds_true)
chain(cond_false, *ds_false)
update_tag_template = BashOperator(task_id="update_tag_template",
bash_command="echo update_tag_template")
update_tag_template_field = BashOperator(
task_id="update_tag_template_field",
bash_command="echo update_tag_template_field")
# Create
create_tasks = [
create_entry_group,
create_entry_gcs,
create_tag_template,
create_tag_template_field,
create_tag,
]
chain(*create_tasks)
create_entry_group >> delete_entry_group
create_entry_group >> create_entry_group_result
create_entry_group >> create_entry_group_result2
create_entry_gcs >> delete_entry
create_entry_gcs >> create_entry_gcs_result
create_entry_gcs >> create_entry_gcs_result2
create_tag_template >> delete_tag_template_field
create_tag_template >> create_tag_template_result
create_tag_template >> create_tag_template_result2
create_tag_template_field >> delete_tag_template_field
create_tag_template_field >> create_tag_template_field_result
# [END howto_transfer_dynamodb_to_s3]
# [START howto_transfer_dynamodb_to_s3_segmented]
# Segmenting allows the transfer to be parallelized into {segment} number of parallel tasks.
backup_db_segment_1 = DynamoDBToS3Operator(
task_id='backup-1',
dynamodb_table_name=TABLE_NAME,
s3_bucket_name=BUCKET_NAME,
# Max output file size in bytes. If the Table is too large, multiple files will be created.
file_size=1000,
dynamodb_scan_kwargs={
"TotalSegments": 2,
"Segment": 0,
},
)
backup_db_segment_2 = DynamoDBToS3Operator(
task_id="backup-2",
dynamodb_table_name=TABLE_NAME,
s3_bucket_name=BUCKET_NAME,
# Max output file size in bytes. If the Table is too large, multiple files will be created.
file_size=1000,
dynamodb_scan_kwargs={
"TotalSegments": 2,
"Segment": 1,
},
)
# [END howto_transfer_dynamodb_to_s3_segmented]
chain(backup_db, [backup_db_segment_1, backup_db_segment_2])
# [START howto_operator_s3_delete_objects]
delete_objects = S3DeleteObjectsOperator(
task_id="s3_delete_objects",
bucket=BUCKET_NAME_2,
keys=KEY_2,
)
# [END howto_operator_s3_delete_objects]
# [START howto_operator_s3_delete_bucket]
delete_bucket = S3DeleteBucketOperator(task_id='s3_delete_bucket',
bucket_name=BUCKET_NAME,
force_delete=True)
# [END howto_operator_s3_delete_bucket]
chain(
create_bucket,
put_tagging,
get_tagging,
delete_tagging,
create_object,
list_prefixes,
list_keys,
[sensor_one_key, sensor_two_keys, sensor_key_with_function],
copy_object,
transforms_file,
sensor_keys_unchanged,
delete_objects,
delete_bucket,
)