pankajkoti commented on code in PR #22808:
URL: https://github.com/apache/airflow/pull/22808#discussion_r848088855
##########
airflow/providers/google/cloud/example_dags/example_gcs.py:
##########
@@ -37,35 +37,44 @@
from airflow.providers.google.cloud.sensors.gcs import (
GCSObjectExistenceSensor,
GCSObjectsWithPrefixExistenceSensor,
+ GCSObjectUpdateSensor,
+ GCSUploadSessionCompleteSensor,
)
from airflow.providers.google.cloud.transfers.gcs_to_gcs import
GCSToGCSOperator
from airflow.providers.google.cloud.transfers.gcs_to_local import
GCSToLocalFilesystemOperator
from airflow.providers.google.cloud.transfers.local_to_gcs import
LocalFilesystemToGCSOperator
START_DATE = datetime(2021, 1, 1)
-PROJECT_ID = os.environ.get("GCP_PROJECT_ID", "example-id")
-BUCKET_1 = os.environ.get("GCP_GCS_BUCKET_1", "test-gcs-example-bucket")
-GCS_ACL_ENTITY = os.environ.get("GCS_ACL_ENTITY", "allUsers")
+PROJECT_ID = os.getenv("GCP_PROJECT_ID", "example-id")
+BUCKET_1 = os.getenv("GCP_GCS_BUCKET_1", "test-gcs-example-bucket")
+GCS_ACL_ENTITY = os.getenv("GCS_ACL_ENTITY", "allUsers")
GCS_ACL_BUCKET_ROLE = "OWNER"
GCS_ACL_OBJECT_ROLE = "OWNER"
-BUCKET_2 = os.environ.get("GCP_GCS_BUCKET_2", "test-gcs-example-bucket-2")
+BUCKET_2 = os.getenv("GCP_GCS_BUCKET_2", "test-gcs-example-bucket-2")
temp_dir_path = gettempdir()
-PATH_TO_TRANSFORM_SCRIPT = os.environ.get(
+PATH_TO_TRANSFORM_SCRIPT = os.getenv(
"GCP_GCS_PATH_TO_TRANSFORM_SCRIPT", os.path.join(temp_dir_path,
"transform_script.py")
)
-PATH_TO_UPLOAD_FILE = os.environ.get(
+PATH_TO_UPLOAD_FILE = os.getenv(
"GCP_GCS_PATH_TO_UPLOAD_FILE", os.path.join(temp_dir_path,
"test-gcs-example-upload.txt")
)
-PATH_TO_UPLOAD_FILE_PREFIX =
os.environ.get("GCP_GCS_PATH_TO_UPLOAD_FILE_PREFIX", "test-gcs-")
-PATH_TO_SAVED_FILE = os.environ.get(
+PATH_TO_UPLOAD_FILE_PREFIX = os.getenv("GCP_GCS_PATH_TO_UPLOAD_FILE_PREFIX",
"test-gcs-")
+PATH_TO_SAVED_FILE = os.getenv(
"GCP_GCS_PATH_TO_SAVED_FILE", os.path.join(temp_dir_path,
"test-gcs-example-download.txt")
)
BUCKET_FILE_LOCATION = PATH_TO_UPLOAD_FILE.rpartition("/")[-1]
+# Upload 'test-gcs-manual-example-upload.txt' manually in the <BUCKET_1> after
triggering the DAG.
Review Comment:
Right. Since, we are starting in parallel, it may happen that, the upload
task is picked up before the sensor task begins and it may not detect the
change as expected. Hence, added the comment to manually upload the file. :)
Also, the gcs_object_update_sensor_task needs to be activated after
gcs_upload_session_complete_task (and not in parallel with it) as the object is
expected to be detected by sensor and the object_update task is to confirm the
manually upload has happened prior to it.
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