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"""This file contains Google Drive operators"""
import os
from pathlib import Path
from typing import TYPE_CHECKING, List, Optional, Sequence, Union
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 be deleted after upload (optional)
.. 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
: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, then don't fail even if all files
can't be uploaded.
:param chunk_size: File will be uploaded in chunks of this many bytes. Only
used if resumable=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
:return: Remote file ids after upload
:rtype: Sequence[str]
"""
[docs] template_fields = (
'local_paths',
'drive_folder',
)
def __init__(
self,
local_paths: Union[Sequence[Path], Sequence[str]],
drive_folder: Union[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: Optional[str] = None,
impersonation_chain: Optional[Union[str, Sequence[str]]] = None,
**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
[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,
)
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
