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"""
Example Airflow DAG that show how to use various Dataproc Metastore
operators to manage a service.
"""
import datetime
import os
from google.cloud.metastore_v1 import MetadataImport
from google.protobuf.field_mask_pb2 import FieldMask
from airflow import models
from airflow.models.baseoperator import chain
from airflow.providers.google.cloud.operators.dataproc_metastore import (
DataprocMetastoreCreateBackupOperator,
DataprocMetastoreCreateMetadataImportOperator,
DataprocMetastoreCreateServiceOperator,
DataprocMetastoreDeleteBackupOperator,
DataprocMetastoreDeleteServiceOperator,
DataprocMetastoreExportMetadataOperator,
DataprocMetastoreGetServiceOperator,
DataprocMetastoreListBackupsOperator,
DataprocMetastoreRestoreServiceOperator,
DataprocMetastoreUpdateServiceOperator,
)
[docs]PROJECT_ID = os.environ.get("GCP_PROJECT_ID", "<PROJECT_ID>")
[docs]SERVICE_ID = os.environ.get("GCP_DATAPROC_METASTORE_SERVICE_ID", "dataproc-metastore-system-tests-service-1")
[docs]BACKUP_ID = os.environ.get("GCP_DATAPROC_METASTORE_BACKUP_ID", "dataproc-metastore-system-tests-backup-1")
[docs]REGION = os.environ.get("GCP_REGION", "<REGION>")
[docs]BUCKET = os.environ.get("GCP_DATAPROC_METASTORE_BUCKET", "INVALID BUCKET NAME")
[docs]GCS_URI = os.environ.get("GCS_URI", f"gs://{BUCKET}/data/hive.sql")
[docs]DESTINATION_GCS_FOLDER = f"gs://{BUCKET}/>"
# Service definition
# Docs: https://cloud.google.com/dataproc-metastore/docs/reference/rest/v1/projects.locations.services#Service
# [START how_to_cloud_dataproc_metastore_create_service]
[docs]SERVICE = {
"name": "test-service",
}
# [END how_to_cloud_dataproc_metastore_create_service]
# Update service
# [START how_to_cloud_dataproc_metastore_update_service]
[docs]SERVICE_TO_UPDATE = {
"labels": {
"mylocalmachine": "mylocalmachine",
"systemtest": "systemtest",
}
}
[docs]UPDATE_MASK = FieldMask(paths=["labels"])
# [END how_to_cloud_dataproc_metastore_update_service]
# Backup definition
# [START how_to_cloud_dataproc_metastore_create_backup]
[docs]BACKUP = {
"name": "test-backup",
}
# [END how_to_cloud_dataproc_metastore_create_backup]
# Metadata import definition
# [START how_to_cloud_dataproc_metastore_create_metadata_import]
},
}
)
# [END how_to_cloud_dataproc_metastore_create_metadata_import]
with models.DAG(
"example_gcp_dataproc_metastore", start_date=datetime.datetime(2021, 1, 1), schedule_interval="@once"
) as dag:
# [START how_to_cloud_dataproc_metastore_create_service_operator]
[docs] create_service = DataprocMetastoreCreateServiceOperator(
task_id="create_service",
region=REGION,
project_id=PROJECT_ID,
service=SERVICE,
service_id=SERVICE_ID,
timeout=TIMEOUT,
)
# [END how_to_cloud_dataproc_metastore_create_service_operator]
# [START how_to_cloud_dataproc_metastore_get_service_operator]
get_service_details = DataprocMetastoreGetServiceOperator(
task_id="get_service",
region=REGION,
project_id=PROJECT_ID,
service_id=SERVICE_ID,
)
# [END how_to_cloud_dataproc_metastore_get_service_operator]
# [START how_to_cloud_dataproc_metastore_update_service_operator]
update_service = DataprocMetastoreUpdateServiceOperator(
task_id="update_service",
project_id=PROJECT_ID,
service_id=SERVICE_ID,
region=REGION,
service=SERVICE_TO_UPDATE,
update_mask=UPDATE_MASK,
timeout=TIMEOUT,
)
# [END how_to_cloud_dataproc_metastore_update_service_operator]
# [START how_to_cloud_dataproc_metastore_create_metadata_import_operator]
import_metadata = DataprocMetastoreCreateMetadataImportOperator(
task_id="create_metadata_import",
project_id=PROJECT_ID,
region=REGION,
service_id=SERVICE_ID,
metadata_import=METADATA_IMPORT,
metadata_import_id=METADATA_IMPORT_ID,
timeout=TIMEOUT,
)
# [END how_to_cloud_dataproc_metastore_create_metadata_import_operator]
# [START how_to_cloud_dataproc_metastore_export_metadata_operator]
export_metadata = DataprocMetastoreExportMetadataOperator(
task_id="export_metadata",
destination_gcs_folder=DESTINATION_GCS_FOLDER,
project_id=PROJECT_ID,
region=REGION,
service_id=SERVICE_ID,
timeout=TIMEOUT,
)
# [END how_to_cloud_dataproc_metastore_export_metadata_operator]
# [START how_to_cloud_dataproc_metastore_create_backup_operator]
backup_service = DataprocMetastoreCreateBackupOperator(
task_id="create_backup",
project_id=PROJECT_ID,
region=REGION,
service_id=SERVICE_ID,
backup=BACKUP,
backup_id=BACKUP_ID,
timeout=TIMEOUT,
)
# [END how_to_cloud_dataproc_metastore_create_backup_operator]
# [START how_to_cloud_dataproc_metastore_list_backups_operator]
list_backups = DataprocMetastoreListBackupsOperator(
task_id="list_backups",
project_id=PROJECT_ID,
region=REGION,
service_id=SERVICE_ID,
)
# [END how_to_cloud_dataproc_metastore_list_backups_operator]
# [START how_to_cloud_dataproc_metastore_delete_backup_operator]
delete_backup = DataprocMetastoreDeleteBackupOperator(
task_id="delete_backup",
project_id=PROJECT_ID,
region=REGION,
service_id=SERVICE_ID,
backup_id=BACKUP_ID,
timeout=TIMEOUT,
)
# [END how_to_cloud_dataproc_metastore_delete_backup_operator]
# [START how_to_cloud_dataproc_metastore_restore_service_operator]
restore_service = DataprocMetastoreRestoreServiceOperator(
task_id="restore_metastore",
region=REGION,
project_id=PROJECT_ID,
service_id=SERVICE_ID,
backup_id=BACKUP_ID,
backup_region=REGION,
backup_project_id=PROJECT_ID,
backup_service_id=SERVICE_ID,
timeout=TIMEOUT,
)
# [END how_to_cloud_dataproc_metastore_restore_service_operator]
# [START how_to_cloud_dataproc_metastore_delete_service_operator]
delete_service = DataprocMetastoreDeleteServiceOperator(
task_id="delete_service",
region=REGION,
project_id=PROJECT_ID,
service_id=SERVICE_ID,
timeout=TIMEOUT,
)
# [END how_to_cloud_dataproc_metastore_delete_service_operator]
chain(
create_service,
update_service,
get_service_details,
backup_service,
list_backups,
restore_service,
delete_backup,
export_metadata,
import_metadata,
delete_service,
)
