Clean-up of google cloud example dags - batch 2 (#19527)

- Use static start_date
- Use catchup=False
- Tidy up the chaining of tasks in some cases
- Remove unnecessary specification of default conn ids

Author: o-nikolas

airflow/providers/google/cloud/example_dags/example_azure_fileshare_to_gcs.py

@@ -37,7 +37,8 @@
         'retry_delay': timedelta(minutes=5),
     },
     schedule_interval='@once',
-    start_date=datetime(2018, 11, 1),
+    start_date=datetime(2021, 1, 1),
+    catchup=False,
     tags=['example'],
 ) as dag:
     # [START howto_operator_azure_fileshare_to_gcs_basic]
@@ -46,8 +47,6 @@
         share_name=AZURE_SHARE_NAME,
         dest_gcs=DEST_GCS_BUCKET,
         directory_name=AZURE_DIRECTORY_NAME,
-        azure_fileshare_conn_id='azure_fileshare_default',
-        gcp_conn_id='google_cloud_default',
         replace=False,
         gzip=True,
         google_impersonation_chain=None,

airflow/providers/google/cloud/example_dags/example_compute.py

@@ -30,14 +30,15 @@
 """
 
 import os
+from datetime import datetime
 
 from airflow import models
+from airflow.models.baseoperator import chain
 from airflow.providers.google.cloud.operators.compute import (
     ComputeEngineSetMachineTypeOperator,
     ComputeEngineStartInstanceOperator,
     ComputeEngineStopInstanceOperator,
 )
-from airflow.utils.dates import days_ago
 
 # [START howto_operator_gce_args_common]
 GCP_PROJECT_ID = os.environ.get('GCP_PROJECT_ID', 'example-project')
@@ -52,7 +53,8 @@
 with models.DAG(
     'example_gcp_compute',
     schedule_interval='@once',  # Override to match your needs
-    start_date=days_ago(1),
+    start_date=datetime(2021, 1, 1),
+    catchup=False,
     tags=['example'],
 ) as dag:
     # [START howto_operator_gce_start]
@@ -96,5 +98,11 @@
     )
     # [END howto_operator_gce_set_machine_type_no_project_id]
 
-    gce_instance_start >> gce_instance_start2 >> gce_instance_stop >> gce_instance_stop2
-    gce_instance_stop2 >> gce_set_machine_type >> gce_set_machine_type2
+    chain(
+        gce_instance_start,
+        gce_instance_start2,
+        gce_instance_stop,
+        gce_instance_stop2,
+        gce_set_machine_type,
+        gce_set_machine_type2,
+    )

airflow/providers/google/cloud/example_dags/example_compute_igm.py

@@ -39,13 +39,14 @@
 """
 
 import os
+from datetime import datetime
 
 from airflow import models
+from airflow.models.baseoperator import chain
 from airflow.providers.google.cloud.operators.compute import (
     ComputeEngineCopyInstanceTemplateOperator,
     ComputeEngineInstanceGroupUpdateManagerTemplateOperator,
 )
-from airflow.utils.dates import days_ago
 
 GCP_PROJECT_ID = os.environ.get('GCP_PROJECT_ID', 'example-project')
 GCE_ZONE = os.environ.get('GCE_ZONE', 'europe-west1-b')
@@ -92,7 +93,8 @@
 with models.DAG(
     'example_gcp_compute_igm',
     schedule_interval='@once',  # Override to match your needs
-    start_date=days_ago(1),
+    start_date=datetime(2021, 1, 1),
+    catchup=False,
     tags=['example'],
 ) as dag:
     # [START howto_operator_gce_igm_copy_template]
@@ -133,5 +135,9 @@
     )
     # [END howto_operator_gce_igm_update_template_no_project_id]
 
-    gce_instance_template_copy >> gce_instance_template_copy2 >> gce_instance_group_manager_update_template
-    gce_instance_group_manager_update_template >> gce_instance_group_manager_update_template2
+    chain(
+        gce_instance_template_copy,
+        gce_instance_template_copy2,
+        gce_instance_group_manager_update_template,
+        gce_instance_group_manager_update_template2,
+    )

airflow/providers/google/cloud/example_dags/example_compute_ssh.py

@@ -16,11 +16,11 @@
 # under the License.
 
 import os
+from datetime import datetime
 
 from airflow import models
 from airflow.providers.google.cloud.hooks.compute_ssh import ComputeEngineSSHHook
 from airflow.providers.ssh.operators.ssh import SSHOperator
-from airflow.utils import dates
 
 # [START howto_operator_gce_args_common]
 GCP_PROJECT_ID = os.environ.get('GCP_PROJECT_ID', 'example-project')
@@ -30,8 +30,9 @@
 
 with models.DAG(
     'example_compute_ssh',
-    default_args=dict(start_date=dates.days_ago(1)),
     schedule_interval='@once',  # Override to match your needs
+    start_date=datetime(2021, 1, 1),
+    catchup=False,
     tags=['example'],
 ) as dag:
     # # [START howto_execute_command_on_remote1]

airflow/providers/google/cloud/example_dags/example_datacatalog.py

@@ -20,6 +20,7 @@
 Example Airflow DAG that interacts with Google Data Catalog service
 """
 import os
+from datetime import datetime
 
 from google.cloud.datacatalog_v1beta1 import FieldType, TagField, TagTemplateField
 
@@ -49,7 +50,6 @@
     CloudDataCatalogUpdateTagTemplateFieldOperator,
     CloudDataCatalogUpdateTagTemplateOperator,
 )
-from airflow.utils.dates import days_ago
 
 PROJECT_ID = os.getenv("GCP_PROJECT_ID")
 BUCKET_ID = os.getenv("GCP_TEST_DATA_BUCKET", "INVALID BUCKET NAME")
@@ -61,7 +61,12 @@
 FIELD_NAME_2 = "second"
 FIELD_NAME_3 = "first-rename"
 
-with models.DAG("example_gcp_datacatalog", schedule_interval='@once', start_date=days_ago(1)) as dag:
+with models.DAG(
+    "example_gcp_datacatalog",
+    schedule_interval='@once',
+    start_date=datetime(2021, 1, 1),
+    catchup=False,
+) as dag:
     # Create
     # [START howto_operator_gcp_datacatalog_create_entry_group]
     create_entry_group = CloudDataCatalogCreateEntryGroupOperator(

airflow/providers/google/cloud/example_dags/example_dataflow.py

@@ -20,6 +20,7 @@
 Example Airflow DAG for Google Cloud Dataflow service
 """
 import os
+from datetime import datetime
 from typing import Callable, Dict, List
 from urllib.parse import urlparse
 
@@ -41,7 +42,8 @@
     DataflowJobStatusSensor,
 )
 from airflow.providers.google.cloud.transfers.gcs_to_local import GCSToLocalFilesystemOperator
-from airflow.utils.dates import days_ago
+
+START_DATE = datetime(2021, 1, 1)
 
 GCS_TMP = os.environ.get('GCP_DATAFLOW_GCS_TMP', 'gs://INVALID BUCKET NAME/temp/')
 GCS_STAGING = os.environ.get('GCP_DATAFLOW_GCS_STAGING', 'gs://INVALID BUCKET NAME/staging/')
@@ -63,7 +65,8 @@
 with models.DAG(
     "example_gcp_dataflow_native_java",
     schedule_interval='@once',  # Override to match your needs
-    start_date=days_ago(1),
+    start_date=START_DATE,
+    catchup=False,
     tags=['example'],
 ) as dag_native_java:
 
@@ -110,7 +113,8 @@
 with models.DAG(
     "example_gcp_dataflow_native_python",
     default_args=default_args,
-    start_date=days_ago(1),
+    start_date=START_DATE,
+    catchup=False,
     schedule_interval='@once',  # Override to match your needs
     tags=['example'],
 ) as dag_native_python:
@@ -145,7 +149,8 @@
 with models.DAG(
     "example_gcp_dataflow_native_python_async",
     default_args=default_args,
-    start_date=days_ago(1),
+    start_date=START_DATE,
+    catchup=False,
     schedule_interval='@once',  # Override to match your needs
     tags=['example'],
 ) as dag_native_python_async:
@@ -246,7 +251,8 @@ def check_autoscaling_event(autoscaling_events: List[dict]) -> bool:
 with models.DAG(
     "example_gcp_dataflow_template",
     default_args=default_args,
-    start_date=days_ago(1),
+    start_date=START_DATE,
+    catchup=False,
     schedule_interval='@once',  # Override to match your needs
     tags=['example'],
 ) as dag_template:

airflow/providers/google/cloud/example_dags/example_dataflow_flex_template.py

@@ -20,10 +20,10 @@
 Example Airflow DAG for Google Cloud Dataflow service
 """
 import os
+from datetime import datetime
 
 from airflow import models
 from airflow.providers.google.cloud.operators.dataflow import DataflowStartFlexTemplateOperator
-from airflow.utils.dates import days_ago
 
 GCP_PROJECT_ID = os.environ.get("GCP_PROJECT_ID", "example-project")
 
@@ -45,7 +45,8 @@
 
 with models.DAG(
     dag_id="example_gcp_dataflow_flex_template_java",
-    start_date=days_ago(1),
+    start_date=datetime(2021, 1, 1),
+    catchup=False,
     schedule_interval='@once',  # Override to match your needs
 ) as dag_flex_template:
     # [START howto_operator_start_template_job]

airflow/providers/google/cloud/example_dags/example_dataflow_sql.py

@@ -20,10 +20,10 @@
 Example Airflow DAG for Google Cloud Dataflow service
 """
 import os
+from datetime import datetime
 
 from airflow import models
 from airflow.providers.google.cloud.operators.dataflow import DataflowStartSqlJobOperator
-from airflow.utils.dates import days_ago
 
 GCP_PROJECT_ID = os.environ.get("GCP_PROJECT_ID", "example-project")
 
@@ -36,7 +36,8 @@
 
 with models.DAG(
     dag_id="example_gcp_dataflow_sql",
-    start_date=days_ago(1),
+    start_date=datetime(2021, 1, 1),
+    catchup=False,
     schedule_interval='@once',  # Override to match your needs
     tags=['example'],
 ) as dag_sql:

airflow/providers/google/cloud/example_dags/example_datafusion.py

@@ -19,6 +19,7 @@
 Example Airflow DAG that shows how to use DataFusion.
 """
 import os
+from datetime import datetime
 
 from airflow import models
 from airflow.operators.bash import BashOperator
@@ -35,7 +36,6 @@
     CloudDataFusionUpdateInstanceOperator,
 )
 from airflow.providers.google.cloud.sensors.datafusion import CloudDataFusionPipelineStateSensor
-from airflow.utils import dates
 from airflow.utils.state import State
 
 # [START howto_data_fusion_env_variables]
@@ -153,7 +153,8 @@
 with models.DAG(
     "example_data_fusion",
     schedule_interval='@once',  # Override to match your needs
-    start_date=dates.days_ago(1),
+    start_date=datetime(2021, 1, 1),
+    catchup=False,
 ) as dag:
     # [START howto_cloud_data_fusion_create_instance_operator]
     create_instance = CloudDataFusionCreateInstanceOperator(

airflow/providers/google/cloud/example_dags/example_dataprep.py

@@ -18,14 +18,14 @@
 Example Airflow DAG that shows how to use Google Dataprep.
 """
 import os
+from datetime import datetime
 
 from airflow import models
 from airflow.providers.google.cloud.operators.dataprep import (
     DataprepGetJobGroupOperator,
     DataprepGetJobsForJobGroupOperator,
     DataprepRunJobGroupOperator,
 )
-from airflow.utils import dates
 
 DATAPREP_JOB_ID = int(os.environ.get('DATAPREP_JOB_ID', 12345677))
 DATAPREP_JOB_RECIPE_ID = int(os.environ.get('DATAPREP_JOB_RECIPE_ID', 12345677))
@@ -53,7 +53,8 @@
 with models.DAG(
     "example_dataprep",
     schedule_interval='@once',
-    start_date=dates.days_ago(1),  # Override to match your needs
+    start_date=datetime(2021, 1, 1),  # Override to match your needs
+    catchup=False,
 ) as dag:
     # [START how_to_dataprep_run_job_group_operator]
     run_job_group = DataprepRunJobGroupOperator(task_id="run_job_group", body_request=DATA)