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"""This file contains Google Drive operators."""
from __future__ import annotations
import os
from pathlib import Path
from typing import TYPE_CHECKING, Sequence
from airflow.exceptions import AirflowFailException
from airflow.models import BaseOperator
from airflow.providers.google.suite.hooks.drive import GoogleDriveHook
if TYPE_CHECKING:
from airflow.utils.context import Context
[docs]class LocalFilesystemToGoogleDriveOperator(BaseOperator):
"""Upload a list of files to a Google Drive folder.
This operator uploads a list of local files to a Google Drive folder.
The local files can optionally be deleted after upload.
.. seealso::
For more information on how to use this operator, take a look at the guide:
:ref:`howto/operator:LocalFilesystemToGoogleDriveOperator`
:param local_paths: Python list of local file paths
:param drive_folder: path of the Drive folder, if *folder_id* is given,
*drive_folder* is a sub path of the folder.
:param gcp_conn_id: Airflow Connection ID for GCP.
:param delete: Should the local files be deleted after upload?
:param ignore_if_missing: If *True*, don't fail even if some files can't be
uploaded.
:param chunk_size: File will be uploaded in chunks of this many bytes. Only
used when *resumable* is set to *True*. Pass in a value of -1 if the
file is to be uploaded as a single chunk. Note that Google App Engine
has a 5MB limit on request size, so you should never set your chunk size
larger than 5MB, or to -1.
:param resumable: True if this is a resumable upload. False means upload
in a single request.
:param delegate_to: The account to impersonate using domain-wide delegation
of authority, if any. For this to work, the service account making the
request must have domain-wide delegation enabled.
:param impersonation_chain: 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
:param folder_id: The base/root folder id for each local path in the Drive
folder.
:param show_full_target_path: If true then it reveals full available file
path in the logs.
:return: Remote file ids after upload.
"""
[docs] template_fields = (
"local_paths",
"drive_folder",
)
def __init__(
self,
local_paths: Sequence[Path] | Sequence[str],
drive_folder: Path | str,
gcp_conn_id: str = "google_cloud_default",
delete: bool = False,
ignore_if_missing: bool = False,
chunk_size: int = 100 * 1024 * 1024,
resumable: bool = False,
delegate_to: str | None = None,
impersonation_chain: str | Sequence[str] | None = None,
folder_id: str = "root",
show_full_target_path: bool = True,
**kwargs,
) -> None:
super().__init__(**kwargs)
self.local_paths = local_paths
self.drive_folder = drive_folder
self.gcp_conn_id = gcp_conn_id
self.delete = delete
self.ignore_if_missing = ignore_if_missing
self.chunk_size = chunk_size
self.resumable = resumable
self.delegate_to = delegate_to
self.impersonation_chain = impersonation_chain
self.folder_id = folder_id
self.show_full_target_path = show_full_target_path
[docs] def execute(self, context: Context) -> list[str]:
hook = GoogleDriveHook(
gcp_conn_id=self.gcp_conn_id,
delegate_to=self.delegate_to,
impersonation_chain=self.impersonation_chain,
)
remote_file_ids = []
for local_path in self.local_paths:
self.log.info("Uploading file to Google Drive: %s", local_path)
try:
remote_file_id = hook.upload_file(
local_location=str(local_path),
remote_location=str(Path(self.drive_folder) / Path(local_path).name),
chunk_size=self.chunk_size,
resumable=self.resumable,
folder_id=self.folder_id,
show_full_target_path=self.show_full_target_path,
)
remote_file_ids.append(remote_file_id)
if self.delete:
os.remove(local_path)
self.log.info("Deleted local file: %s", local_path)
except FileNotFoundError:
self.log.warning("File can't be found: %s", local_path)
except OSError:
self.log.warning("An OSError occurred for file: %s", local_path)
if not self.ignore_if_missing and len(remote_file_ids) < len(self.local_paths):
raise AirflowFailException("Some files couldn't be uploaded")
return remote_file_ids
