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==========================
Filesystem Storage Backend
==========================
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This addon is a technical addon that allows you to define filesystem like
storage for your data. It's used by other addons to store their data in a
transparent way into different kind of storages.
Through the fs.storage record, you get access to an object that implements
the `fsspec.spec.AbstractFileSystem <https://filesystem-spec.readthedocs.io/en/
latest/api.html#fsspec.spec.AbstractFileSystem>`_ interface and therefore give
you an unified interface to access your data whatever the storage protocol you
decide to use.
The list of supported protocols depends on the installed fsspec implementations.
By default, the addon will install the following protocols:
* LocalFileSystem
* MemoryFileSystem
* ZipFileSystem
* TarFileSystem
* FTPFileSystem
* CachingFileSystem
* WholeFileSystem
* SimplCacheFileSystem
* ReferenceFileSystem
* GenericFileSystem
* DirFileSystem
* DatabricksFileSystem
* GitHubFileSystem
* JupiterFileSystem
* OdooFileSystem
The OdooFileSystem is the one that allows you to store your data into a directory
mounted into your Odoo's storage directory. This is the default FS Storage
when creating a new fs.storage record.
Others protocols are available through the installation of additional
python packages:
* DropboxDriveFileSystem -> `pip install fsspec[dropbox]`
* HTTPFileSystem -> `pip install fsspec[http]`
* HTTPSFileSystem -> `pip install fsspec[http]`
* GCSFileSystem -> `pip install fsspec[gcs]`
* GSFileSystem -> `pip install fsspec[gs]`
* GoogleDriveFileSystem -> `pip install gdrivefs`
* SFTPFileSystem -> `pip install fsspec[sftp]`
* HaddoopFileSystem -> `pip install fsspec[hdfs]`
* S3FileSystem -> `pip install fsspec[s3]`
* WandbFS -> `pip install wandbfs`
* OCIFileSystem -> `pip install fsspec[oci]`
* AsyncLocalFileSystem -> `pip install 'morefs[asynclocalfs]`
* AzureDatalakeFileSystem -> `pip install fsspec[adl]`
* AzureBlobFileSystem -> `pip install fsspec[abfs]`
* DaskWorkerFileSystem -> `pip install fsspec[dask]`
* GitFileSystem -> `pip install fsspec[git]`
* SMBFileSystem -> `pip install fsspec[smb]`
* LibArchiveFileSystem -> `pip install fsspec[libarchive]`
* OSSFileSystem -> `pip install ossfs`
* WebdavFileSystem -> `pip install webdav4`
* DVCFileSystem -> `pip install dvc`
* XRootDFileSystem -> `pip install fsspec-xrootd`
This list of supported protocols is not exhaustive or could change in the future
depending on the fsspec releases. You can find more information about the
supported protocols on the `fsspec documentation
<https://filesystem-spec.readthedocs.io/en/latest/api.html#fsspec.spec.AbstractFileSystem>`_.
**Table of contents**
.. contents::
:local:
Usage
=====
Configuration
~~~~~~~~~~~~~
When you create a new backend, you must specify the following:
* The name of the backend. This is the name that will be used to
identify the backend into Odoo
* The code of the backend. This code will identify the backend into the store_fname
field of the ir.attachment model. This code must be unique. It will be used
as scheme. example of the store_fname field: ``odoofs://abs34Tg11``.
* The protocol used by the backend. The protocol refers to the supported
protocols of the fsspec python package.
* A directory path. This is a root directory from which the filesystem will
be mounted. This directory must exist.
* The protocol options. These are the options that will be passed to the
fsspec python package when creating the filesystem. These options depend
on the protocol used and are described in the fsspec documentation.
* Resolve env vars. This options resolves the protocol options values starting
with $ from environment variables
* Check Connection Method. If set, Odoo will always check the connection before using
a storage and it will remove the fs connection from the cache if the check fails.
* ``Create Marker file`` : create a hidden file on remote and then check it exists with
Use it if you have write access to the remote and if it is not an issue to leave
the marker file in the root directory.
* ``List file`` : list all files from the root directory. You can use it if the directory
path does not contain a big list of files (for performance reasons)
Some protocols defined in the fsspec package are wrappers around other
protocols. For example, the SimpleCacheFileSystem protocol is a wrapper
around any local filesystem protocol. In such cases, you must specify into the
protocol options the protocol to be wrapped and the options to be passed to
the wrapped protocol.
For example, if you want to create a backend that uses the SimpleCacheFileSystem
protocol, after selecting the SimpleCacheFileSystem protocol, you must specify
the protocol options as follows:
.. code-block:: python
{
"directory_path": "/tmp/my_backend",
"target_protocol": "odoofs",
"target_options": {...},
}
In this example, the SimpleCacheFileSystem protocol will be used as a wrapper
around the odoofs protocol.
Server Environment
~~~~~~~~~~~~~~~~~~
To ease the management of the filesystem storages configuration accross the different
environments, the configuration of the filesystem storages can be defined in
environment files or directly in the main configuration file. For example, the
configuration of a filesystem storage with the code `fsprod` can be provided in the
main configuration file as follows:
.. code-block:: ini
[fs_storage.fsprod]
protocol=s3
options={"endpoint_url": "https://my_s3_server/", "key": "KEY", "secret": "SECRET"}
directory_path=my_bucket
To work, a `storage.backend` record must exist with the code `fsprod` into the database.
In your configuration section, you can specify the value for the following fields:
* `protocol`
* `options`
* `directory_path`
Migration from storage_backend
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
The fs_storage addon can be used to replace the storage_backend addon. (It has
been designed to be a drop-in replacement for the storage_backend addon). To
ease the migration, the `fs.storage` model defines the high-level methods
available in the storage_backend model. These methods are:
* `add`
* `get`
* `list_files`
* `find_files`
* `move_files`
* `delete`
These methods are wrappers around the methods of the `fsspec.AbstractFileSystem`
class (see https://filesystem-spec.readthedocs.io/en/latest/api.html#fsspec.spec.AbstractFileSystem).
These methods are marked as deprecated and will be removed in a future version (V18)
of the addon. You should use the methods of the `fsspec.AbstractFileSystem` class
instead since they are more flexible and powerful. You can access the instance
of the `fsspec.AbstractFileSystem` class using the `fs` property of a `fs.storage`
record.
Known issues / Roadmap
======================
* Transactions: fsspec comes with a transactional mechanism that once started,
gathers all the files created during the transaction, and if the transaction
is committed, moves them to their final locations. It would be useful to
bridge this with the transactional mechanism of odoo. This would allow to
ensure that all the files created during a transaction are either all
moved to their final locations, or all deleted if the transaction is rolled
back. This mechanism is only valid for files created during the transaction
by a call to the `open` method of the file system. It is not valid for others
operations, such as `rm`, `mv_file`, ... .
Changelog
=========
16.0.1.2.0 (2024-02-06)
~~~~~~~~~~~~~~~~~~~~~~~
**Features**
- Invalidate FS filesystem object cache when the connection fails, forcing a reconnection. (`#320 <https://github.com/OCA/storage/issues/320>`_)
16.0.1.1.0 (2023-12-22)
~~~~~~~~~~~~~~~~~~~~~~~
**Features**
- Add parameter on storage backend to resolve protocol options values starting with $ from environment variables (`#303 <https://github.com/OCA/storage/issues/303>`_)
16.0.1.0.3 (2023-10-17)
~~~~~~~~~~~~~~~~~~~~~~~
**Bugfixes**
- Fix access to technical models to be able to upload attachments for users with basic access (`#289 <https://github.com/OCA/storage/issues/289>`_)
16.0.1.0.2 (2023-10-09)
~~~~~~~~~~~~~~~~~~~~~~~
**Bugfixes**
- Avoid config error when using the webdav protocol. The auth option is expected
to be a tuple not a list. Since our config is loaded from a json file, we
cannot use tuples. The fix converts the list to a tuple when the config is
related to a webdav protocol and the auth option is into the confix. (`#285 <https://github.com/OCA/storage/issues/285>`_)
Bug Tracker
===========
Bugs are tracked on `GitHub Issues <https://github.com/OCA/storage/issues>`_.
In case of trouble, please check there if your issue has already been reported.
If you spotted it first, help us to smash it by providing a detailed and welcomed
`feedback <https://github.com/OCA/storage/issues/new?body=module:%20fs_storage%0Aversion:%2016.0%0A%0A**Steps%20to%20reproduce**%0A-%20...%0A%0A**Current%20behavior**%0A%0A**Expected%20behavior**>`_.
Do not contact contributors directly about support or help with technical issues.
Credits
=======
Authors
~~~~~~~
* ACSONE SA/NV
Contributors
~~~~~~~~~~~~
* Laurent Mignon <laurent.mignon@acsone.eu>
* Sébastien BEAU <sebastien.beau@akretion.com>
Maintainers
~~~~~~~~~~~
This module is maintained by the OCA.
.. image:: https://odoo-community.org/logo.png
:alt: Odoo Community Association
:target: https://odoo-community.org
OCA, or the Odoo Community Association, is a nonprofit organization whose
mission is to support the collaborative development of Odoo features and
promote its widespread use.
This module is part of the `OCA/storage <https://github.com/OCA/storage/tree/16.0/fs_storage>`_ project on GitHub.
You are welcome to contribute. To learn how please visit https://odoo-community.org/page/Contribute.
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