def add_fuse_directory_markers_to_cloud_storage(client, bucket_name, root_path="", pbar=True):
"""
Create gcsfuse directory markers from a bucket and root path
Parameters
-----------
client : google.cloud.storage.Client
See the [google.cloud.storage.Client](https://googleapis.dev/python/storage/latest/client.html) docs for help setting this up.
bucket_name : str
name of the bucket on gcs
root_path : str, optional
prefix of "directories" below which to create the directory markers
Examples
---------
The following will create directory markers for all directories within gs://my-bucket/path/to/root,
where directories are indicated by the presence of blobs with directory separators (`'/'`) in the
path. Empty directories will not be created, since these cannot exist on google cloud storage.
.. code-block:: python
>>> client = google.cloud.storage.Client.from_service_account_json('/path/to/cred.json')
>>> add_fuse_directory_markers_to_cloud_storage(client, 'my-bucket', 'path/to/root/')
"""
blobs = bucket.list_blobs(prefix=root_path)
pages = blobs.pages
if pbar:
progress_bar = tqdm(pages)
total_items = 0
directories = set()
for page in pages:
if pbar:
total_items += page.num_items
progress_bar.total = total_items
progress_bar.refresh()
for blob in page:
if pbar:
progress_bar.update()
dirname = os.path.dirname(blob.name).rstrip("\\/") + "/"
if dirname not in directories:
dir_blob = bucket.blob(dirname)
if not dir_blob.exists():
dir_blob.upload_from_string(b"")
directories.add(dirname)
if pbar:
progress_bar.close()
