# CS3Client
`CS3Client` is a Python client for interacting with the CS3 (Cloud Storage Services for Science) API. It allows users to seamlessly communicate with cloud storage services that support CS3 protocols, enabling file management, data transfer, and other cloud-based operations.
## Table of Contents
- [Features](#features)
- [Installation](#installation)
- [Usage](#usage)
- [Configuration](#configuration)
- [Examples](#examples)
- [Documentation](#documentation)
- [License](#license)
## Features
- Simple and easy-to-use API client for CS3 services.
- Support for common file operations (read, write, delete, rename, ...).
- Support for common lock operations (set lock, get lock, unlock, ...).
- Support for common share operations (create share, update share, delete share, ...).
- Support for common user operations (get user, find users, get user groups, ...).
- Support for restoring files through checkpoints (restore file version, list checkpoints).
- Support for applications (open in app, list app providers).
- Authentication and authorization handling.
- Cross-platform compatibility.
- Detailed error handling and logging.
## Installation
To install `cs3client`, you need to have Python 3.7+ installed. You can install the package via `pip`:
```bash
pip install cs3client
```
Alternatively, you can clone this repository and install manually:
```bash
git clone git@github.com:cs3org/cs3-python-client.git
cd cs3-python-client
pip install .
```
## Configuration
`CS3Client` can be configured by passing specific parameters when initializing the client through a ConfigParser instance.
### Parameters:
#### Required
- `host`
#### Optional (parameter - default)
- `chunk_size` - 4194384
- `grpc_timeout` - 10
- `http_timeout` - 10
- `tus_enabled` - False
- `ssl_enabled` - False
- `ssl_client_cert` - None
- `ssl_client_key` - None
- `ssl_ca_cert` - None
- `auth_client_id` - None
- `auth_login_type` - "basic"
- `lock_by_setting_attr` - False
- `lock_not_impl` - False
- `lock_expiration` - 1800
#### Example configuration
```yaml
[cs3client]
# Required
host = localhost:19000
# Optional, defaults to 4194304
chunk_size = 4194304
# Optional, defaults to 10
grpc_timeout = 10
# Optional, defaults to 10
http_timeout = 10
# Optional, defaults to True
tus_enabled = False
# Optional, defaults to True
ssl_enabled = False
# Optional, defaults to True
ssl_verify = False
# Optional, defaults to an empty string
ssl_client_cert = test_client_cert
# Optional, defaults to an empty string
ssl_client_key = test_client_key
# Optional, defaults to an empty string
ssl_ca_cert = test_ca_cert
# Optinal, defaults to an empty string
auth_client_id = einstein
# Optional (can also be set when instansiating the class)
auth_client_secret = relativity
# Optional, defaults to basic
auth_login_type = basic
# Optional, defaults to False
lock_by_setting_attr = False
# Optional, defaults to False
lock_not_impl = False
# Optional, defaults to 1800
lock_expiration = 1800
```
## Usage
To use `cs3client`, you first need to import and configure it. Here's a simple example of how to set up and start using the client. For configuration see [Configuration](#configuration). For more in depth examples see `cs3-python-client/examples/`.
### Initilization and Authentication
```python
import logging
import configparser
from cs3client.cs3client import CS3Client
from cs3client.auth import Auth
config = configparser.ConfigParser()
with open("default.conf") as fdef:
config.read_file(fdef)
log = logging.getLogger(__name__)
client = CS3Client(config, "cs3client", log)
auth = Auth(client)
# Set the client id (can also be set in the config)
auth.set_client_id("<your_client_id_here>")
# Set client secret (can also be set in config)
auth.set_client_secret("<your_client_secret_here>")
# Checks if token is expired if not return ('x-access-token', <token>)
# if expired, request a new token from reva
auth_token = auth.get_token()
# OR if you already have a reva token
# Checks if token is expired if not return (x-access-token', <token>)
# if expired, throws an AuthenticationException (so you can refresh your reva token)
token = "<your_reva_token>"
auth_token = Auth.check_token(token)
```
### File Example
```python
# mkdir
directory_resource = Resource(abs_path=f"/eos/user/r/rwelande/test_directory")
res = client.file.make_dir(auth.get_token(), directory_resource)
# touchfile
touch_resource = Resource(abs_path="/eos/user/r/rwelande/touch_file.txt")
res = client.file.touch_file(auth.get_token(), touch_resource)
# setxattr
resource = Resource(abs_path="/eos/user/r/rwelande/text_file.txt")
res = client.file.set_xattr(auth.get_token(), resource, "iop.wopi.lastwritetime", str(1720696124))
# rmxattr
res = client.file.remove_xattr(auth.get_token(), resource, "iop.wopi.lastwritetime")
# stat
res = client.file.stat(auth.get_token(), resource)
# removefile
res = client.file.remove_file(auth.get_token(), touch_resource)
# rename
rename_resource = Resource(abs_path="/eos/user/r/rwelande/rename_file.txt")
res = client.file.rename_file(auth.get_token(), resource, rename_resource)
# writefile
content = b"Hello World"
size = len(content)
res = client.file.write_file(auth.get_token(), rename_resource, content, size)
# listdir
list_directory_resource = Resource(abs_path="/eos/user/r/rwelande")
res = client.file.list_dir(auth.get_token(), list_directory_resource)
# readfile
file_res = client.file.read_file(auth.get_token(), rename_resource)
```
### Lock Example
```python
WEBDAV_LOCK_PREFIX = 'opaquelocktoken:797356a8-0500-4ceb-a8a0-c94c8cde7eba'
def encode_lock(lock):
'''Generates the lock payload for the storage given the raw metadata'''
if lock:
return WEBDAV_LOCK_PREFIX + ' ' + b64encode(lock.encode()).decode()
return None
resource = Resource(abs_path="/eos/user/r/rwelande/lock_test.txt")
# Set lock
client.file.set_lock(auth_token, resource, app_name="a", lock_id=encode_lock("some_lock"))
# Get lock
res = client.file.get_lock(auth_token, resource)
if res is not None:
lock_id = res["lock_id"]
print(res)
# Unlock
res = client.file.unlock(auth_token, resource, app_name="a", lock_id=lock_id)
# Refresh lock
client.file.set_lock(auth_token, resource, app_name="a", lock_id=encode_lock("some_lock"))
res = client.file.refresh_lock(
auth_token, resource, app_name="a", lock_id=encode_lock("new_lock"), existing_lock_id=lock_id
)
if res is not None:
print(res)
res = client.file.get_lock(auth_token, resource)
if res is not None:
print(res)
```
### Share Example
```python
# Create share #
resource = Resource(abs_path="/eos/user/r/<some_username>/text.txt")
resource_info = client.file.stat(auth.get_token(), resource)
user = client.user.get_user_by_claim("username", "<some_username>")
res = client.share.create_share(auth.get_token(), resource_info, user.id.opaque_id, user.id.idp, "EDITOR", "USER")
# List existing shares #
filter_list = []
filter = client.share.create_share_filter(resource_id=resource_info.id, filter_type="TYPE_RESOURCE_ID")
filter_list.append(filter)
filter = client.share.create_share_filter(share_state="SHARE_STATE_PENDING", filter_type="TYPE_STATE")
filter_list.append(filter)
res, _ = client.share.list_existing_shares(auth.get_token(), )
# Get share #
share_id = "58"
res = client.share.get_share(auth.get_token(), opaque_id=share_id)
# update share #
res = client.share.update_share(auth.get_token(), opaque_id=share_id, role="VIEWER")
# remove share #
res = client.share.remove_share(auth.get_token(), opaque_id=share_id)
# List existing received shares #
filter_list = []
filter = client.share.create_share_filter(share_state="SHARE_STATE_ACCEPTED", filter_type="TYPE_STATE")
filter_list.append(filter)
res, _ = client.share.list_received_existing_shares(auth.get_token())
# get received share #
received_share = client.share.get_received_share(auth.get_token(), opaque_id=share_id)
# update recieved share #
res = client.share.update_received_share(auth.get_token(), received_share=received_share, state="SHARE_STATE_ACCEPTED")
# create public share #
res = client.share.create_public_share(auth.get_token(), resource_info, role="VIEWER")
# list existing public shares #
filter_list = []
filter = client.share.create_public_share_filter(resource_id=resource_info.id, filter_type="TYPE_RESOURCE_ID")
filter_list.append(filter)
res, _ = client.share.list_existing_public_shares(filter_list=filter_list)
res = client.share.get_public_share(auth.get_token(), opaque_id=share_id, sign=True)
# OR token = "<token>"
# res = client.share.get_public_share(token=token, sign=True)
# update public share #
res = client.share.update_public_share(auth.get_token(), type="TYPE_PASSWORD", token=token, role="VIEWER", password="hello")
# remove public share #
res = client.share.remove_public_share(auth.get_token(), token=token)
```
### User Example
```python
# find_user
res = client.user.find_users(auth.get_token(), "rwel")
# get_user
res = client.user.get_user("https://auth.cern.ch/auth/realms/cern", "asdoiqwe")
# get_user_groups
res = client.user.get_user_groups("https://auth.cern.ch/auth/realms/cern", "rwelande")
# get_user_by_claim (mail)
res = client.user.get_user_by_claim("mail", "rasmus.oscar.welander@cern.ch")
# get_user_by_claim (username)
res = client.user.get_user_by_claim("username", "rwelande")
```
### App Example
```python
# list_app_providers
res = client.app.list_app_providers(auth.get_token())
# open_in_app
resource = Resource(abs_path="/eos/user/r/rwelande/collabora.odt")
res = client.app.open_in_app(auth.get_token(), resource)
```
### Checkpoint Example
```python
# list file versions
resource = Resource(abs_path="/eos/user/r/rwelande/test.md")
res = client.checkpoint.list_file_versions(auth.get_token(), resource)
# restore file version
res = client.checkpoint.restore_file_version(auth.get_token(), resource, "1722936250.0569fa2f")
```
## Documentation
The documentation can be generated using sphinx
```bash
pip install sphinx
cd docs
make html
```
## Unit tests
```bash
pytest --cov-report term --cov=serc tests/
```
## License
This project is licensed under the Apache 2.0 License. See the LICENSE file for more details.
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"description": "# CS3Client\n\n`CS3Client` is a Python client for interacting with the CS3 (Cloud Storage Services for Science) API. It allows users to seamlessly communicate with cloud storage services that support CS3 protocols, enabling file management, data transfer, and other cloud-based operations.\n\n## Table of Contents\n\n- [Features](#features)\n- [Installation](#installation)\n- [Usage](#usage)\n- [Configuration](#configuration)\n- [Examples](#examples)\n- [Documentation](#documentation)\n- [License](#license)\n\n\n## Features\n\n- Simple and easy-to-use API client for CS3 services.\n- Support for common file operations (read, write, delete, rename, ...).\n- Support for common lock operations (set lock, get lock, unlock, ...).\n- Support for common share operations (create share, update share, delete share, ...).\n- Support for common user operations (get user, find users, get user groups, ...).\n- Support for restoring files through checkpoints (restore file version, list checkpoints).\n- Support for applications (open in app, list app providers).\n- Authentication and authorization handling.\n- Cross-platform compatibility.\n- Detailed error handling and logging.\n\n## Installation\n\nTo install `cs3client`, you need to have Python 3.7+ installed. You can install the package via `pip`:\n\n```bash\npip install cs3client\n```\nAlternatively, you can clone this repository and install manually:\n```bash\ngit clone git@github.com:cs3org/cs3-python-client.git\ncd cs3-python-client\npip install . \n```\n\n\n## Configuration\n\n`CS3Client` can be configured by passing specific parameters when initializing the client through a ConfigParser instance.\n\n### Parameters:\n\n#### Required\n- `host`\n\n#### Optional (parameter - default)\n- `chunk_size` - 4194384\n- `grpc_timeout` - 10\n- `http_timeout` - 10\n- `tus_enabled` - False\n- `ssl_enabled` - False\n- `ssl_client_cert` - None\n- `ssl_client_key` - None\n- `ssl_ca_cert` - None\n- `auth_client_id` - None\n- `auth_login_type` - \"basic\"\n- `lock_by_setting_attr` - False\n- `lock_not_impl` - False\n- `lock_expiration` - 1800\n\n#### Example configuration\n```yaml\n[cs3client]\n\n# Required\nhost = localhost:19000\n# Optional, defaults to 4194304\nchunk_size = 4194304\n# Optional, defaults to 10\ngrpc_timeout = 10\n# Optional, defaults to 10\nhttp_timeout = 10\n\n# Optional, defaults to True\ntus_enabled = False\n\n# Optional, defaults to True\nssl_enabled = False\n# Optional, defaults to True\nssl_verify = False\n# Optional, defaults to an empty string\nssl_client_cert = test_client_cert\n# Optional, defaults to an empty string\nssl_client_key = test_client_key\n# Optional, defaults to an empty string\nssl_ca_cert = test_ca_cert\n\n# Optinal, defaults to an empty string\nauth_client_id = einstein\n# Optional (can also be set when instansiating the class)\nauth_client_secret = relativity\n# Optional, defaults to basic\nauth_login_type = basic\n\n# Optional, defaults to False\nlock_by_setting_attr = False\n# Optional, defaults to False\nlock_not_impl = False\n# Optional, defaults to 1800\nlock_expiration = 1800\n\n\n```\n\n## Usage\n\nTo use `cs3client`, you first need to import and configure it. Here's a simple example of how to set up and start using the client. For configuration see [Configuration](#configuration). For more in depth examples see `cs3-python-client/examples/`. \n\n### Initilization and Authentication\n```python\nimport logging\nimport configparser\nfrom cs3client.cs3client import CS3Client\nfrom cs3client.auth import Auth\n\nconfig = configparser.ConfigParser()\nwith open(\"default.conf\") as fdef:\n config.read_file(fdef)\nlog = logging.getLogger(__name__)\n\nclient = CS3Client(config, \"cs3client\", log)\nauth = Auth(client)\n# Set the client id (can also be set in the config)\nauth.set_client_id(\"<your_client_id_here>\")\n# Set client secret (can also be set in config)\nauth.set_client_secret(\"<your_client_secret_here>\")\n# Checks if token is expired if not return ('x-access-token', <token>)\n# if expired, request a new token from reva\nauth_token = auth.get_token()\n\n# OR if you already have a reva token\n# Checks if token is expired if not return (x-access-token', <token>)\n# if expired, throws an AuthenticationException (so you can refresh your reva token)\ntoken = \"<your_reva_token>\"\nauth_token = Auth.check_token(token)\n\n```\n\n### File Example\n```python\n# mkdir\ndirectory_resource = Resource(abs_path=f\"/eos/user/r/rwelande/test_directory\")\nres = client.file.make_dir(auth.get_token(), directory_resource)\n\n# touchfile\ntouch_resource = Resource(abs_path=\"/eos/user/r/rwelande/touch_file.txt\")\nres = client.file.touch_file(auth.get_token(), touch_resource)\n\n# setxattr\nresource = Resource(abs_path=\"/eos/user/r/rwelande/text_file.txt\")\nres = client.file.set_xattr(auth.get_token(), resource, \"iop.wopi.lastwritetime\", str(1720696124))\n\n# rmxattr\nres = client.file.remove_xattr(auth.get_token(), resource, \"iop.wopi.lastwritetime\")\n\n# stat\nres = client.file.stat(auth.get_token(), resource)\n\n# removefile\nres = client.file.remove_file(auth.get_token(), touch_resource)\n\n# rename\nrename_resource = Resource(abs_path=\"/eos/user/r/rwelande/rename_file.txt\")\nres = client.file.rename_file(auth.get_token(), resource, rename_resource)\n\n# writefile\ncontent = b\"Hello World\"\nsize = len(content)\nres = client.file.write_file(auth.get_token(), rename_resource, content, size)\n\n# listdir\nlist_directory_resource = Resource(abs_path=\"/eos/user/r/rwelande\")\nres = client.file.list_dir(auth.get_token(), list_directory_resource)\n\n\n# readfile\nfile_res = client.file.read_file(auth.get_token(), rename_resource)\n```\n### Lock Example\n```python\n\nWEBDAV_LOCK_PREFIX = 'opaquelocktoken:797356a8-0500-4ceb-a8a0-c94c8cde7eba'\n\n\ndef encode_lock(lock):\n '''Generates the lock payload for the storage given the raw metadata'''\n if lock:\n return WEBDAV_LOCK_PREFIX + ' ' + b64encode(lock.encode()).decode()\n return None\n\nresource = Resource(abs_path=\"/eos/user/r/rwelande/lock_test.txt\")\n\n# Set lock\nclient.file.set_lock(auth_token, resource, app_name=\"a\", lock_id=encode_lock(\"some_lock\"))\n\n# Get lock\nres = client.file.get_lock(auth_token, resource)\nif res is not None:\n lock_id = res[\"lock_id\"]\n print(res)\n\n# Unlock\nres = client.file.unlock(auth_token, resource, app_name=\"a\", lock_id=lock_id)\n\n# Refresh lock\nclient.file.set_lock(auth_token, resource, app_name=\"a\", lock_id=encode_lock(\"some_lock\"))\nres = client.file.refresh_lock(\n auth_token, resource, app_name=\"a\", lock_id=encode_lock(\"new_lock\"), existing_lock_id=lock_id\n)\n\nif res is not None:\n print(res)\n\nres = client.file.get_lock(auth_token, resource)\nif res is not None:\n print(res)\n\n```\n\n### Share Example\n```python\n# Create share #\nresource = Resource(abs_path=\"/eos/user/r/<some_username>/text.txt\")\nresource_info = client.file.stat(auth.get_token(), resource)\nuser = client.user.get_user_by_claim(\"username\", \"<some_username>\")\nres = client.share.create_share(auth.get_token(), resource_info, user.id.opaque_id, user.id.idp, \"EDITOR\", \"USER\")\n\n# List existing shares #\nfilter_list = []\nfilter = client.share.create_share_filter(resource_id=resource_info.id, filter_type=\"TYPE_RESOURCE_ID\")\nfilter_list.append(filter)\nfilter = client.share.create_share_filter(share_state=\"SHARE_STATE_PENDING\", filter_type=\"TYPE_STATE\")\nfilter_list.append(filter)\nres, _ = client.share.list_existing_shares(auth.get_token(), )\n\n# Get share #\nshare_id = \"58\"\nres = client.share.get_share(auth.get_token(), opaque_id=share_id)\n\n# update share #\nres = client.share.update_share(auth.get_token(), opaque_id=share_id, role=\"VIEWER\")\n\n# remove share #\nres = client.share.remove_share(auth.get_token(), opaque_id=share_id)\n\n# List existing received shares #\nfilter_list = []\nfilter = client.share.create_share_filter(share_state=\"SHARE_STATE_ACCEPTED\", filter_type=\"TYPE_STATE\")\nfilter_list.append(filter)\nres, _ = client.share.list_received_existing_shares(auth.get_token())\n\n# get received share #\nreceived_share = client.share.get_received_share(auth.get_token(), opaque_id=share_id)\n\n# update recieved share #\nres = client.share.update_received_share(auth.get_token(), received_share=received_share, state=\"SHARE_STATE_ACCEPTED\")\n\n# create public share #\nres = client.share.create_public_share(auth.get_token(), resource_info, role=\"VIEWER\")\n\n# list existing public shares #\nfilter_list = []\nfilter = client.share.create_public_share_filter(resource_id=resource_info.id, filter_type=\"TYPE_RESOURCE_ID\")\nfilter_list.append(filter)\nres, _ = client.share.list_existing_public_shares(filter_list=filter_list)\n\nres = client.share.get_public_share(auth.get_token(), opaque_id=share_id, sign=True)\n# OR token = \"<token>\"\n# res = client.share.get_public_share(token=token, sign=True)\n\n# update public share #\nres = client.share.update_public_share(auth.get_token(), type=\"TYPE_PASSWORD\", token=token, role=\"VIEWER\", password=\"hello\")\n\n# remove public share #\nres = client.share.remove_public_share(auth.get_token(), token=token)\n\n```\n\n### User Example\n```python\n# find_user\nres = client.user.find_users(auth.get_token(), \"rwel\")\n\n# get_user\nres = client.user.get_user(\"https://auth.cern.ch/auth/realms/cern\", \"asdoiqwe\")\n\n# get_user_groups\nres = client.user.get_user_groups(\"https://auth.cern.ch/auth/realms/cern\", \"rwelande\")\n\n# get_user_by_claim (mail)\nres = client.user.get_user_by_claim(\"mail\", \"rasmus.oscar.welander@cern.ch\")\n\n# get_user_by_claim (username)\nres = client.user.get_user_by_claim(\"username\", \"rwelande\")\n\n```\n\n### App Example\n```python\n# list_app_providers\nres = client.app.list_app_providers(auth.get_token())\n\n# open_in_app\nresource = Resource(abs_path=\"/eos/user/r/rwelande/collabora.odt\")\nres = client.app.open_in_app(auth.get_token(), resource)\n```\n\n### Checkpoint Example\n```python\n# list file versions\nresource = Resource(abs_path=\"/eos/user/r/rwelande/test.md\")\nres = client.checkpoint.list_file_versions(auth.get_token(), resource)\n\n# restore file version\nres = client.checkpoint.restore_file_version(auth.get_token(), resource, \"1722936250.0569fa2f\")\n```\n\n## Documentation\nThe documentation can be generated using sphinx\n\n```bash\npip install sphinx\ncd docs\nmake html\n```\n\n## Unit tests\n\n```bash\npytest --cov-report term --cov=serc tests/\n```\n\n## License\n\nThis project is licensed under the Apache 2.0 License. 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