airflow.providers.presto.transfers.gcs_to_presto¶
This module contains Google Cloud Storage to Presto operator.
Module Contents¶
Classes¶
Loads a csv file from Google Cloud Storage into a Presto table. |
- class airflow.providers.presto.transfers.gcs_to_presto.GCSToPrestoOperator(*, source_bucket, source_object, presto_table, presto_conn_id='presto_default', gcp_conn_id='google_cloud_default', schema_fields=None, schema_object=None, impersonation_chain=None, **kwargs)[source]¶
Bases:
airflow.models.BaseOperatorLoads a csv file from Google Cloud Storage into a Presto table.
Assumptions: 1. CSV file should not have headers 2. Presto table with requisite columns is already created 3. Optionally, a separate JSON file with headers or list of headers can be provided
- Parameters
source_bucket (str) – Source GCS bucket that contains the csv
source_object (str) – csv file including the path
presto_table (str) – presto table to upload the data
presto_conn_id (str) – destination presto connection
gcp_conn_id (str) – (Optional) The connection ID used to connect to Google Cloud and interact with the Google Cloud Storage service.
impersonation_chain (str | collections.abc.Sequence[str] | None) – Optional service account to impersonate using short-term credentials, or chained list of accounts required to get the access_token of the last account in the list, which will be impersonated in the request. If set as a string, the account must grant the originating account the Service Account Token Creator IAM role. If set as a sequence, the identities from the list must grant Service Account Token Creator IAM role to the directly preceding identity, with first account from the list granting this role to the originating account.
- template_fields: collections.abc.Sequence[str] = ('source_bucket', 'source_object', 'presto_table')[source]¶