Initial immudb_wrapper implementation #1

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# immudb_wrapper
The wrapper around binary `immuclient` from project Codenotary.
The wrapper around the SDK client `immudb-py` from project Codenotary, which expands the functionality of the original client with additional functions.
## Table of Contents
- [Requirements](#requirements)
- [Installation](#installation)
- [Usage](#usage)
- [Contribution](#contribution)
## Requirements
- python >= 3.7
- immudb-py >= 1.4.0
- GitPython >= 3.1.20
## Installation
You can easily install `immudb_wrapper` into your environment with the following command:
```
pip install git+https://git.almalinux.org/danfimov/immudb_wrapper.git@<tag|branch>#egg=immudb_wrapper
```
To run the `immudb` instance locally, you can use the options from `immudb` [documentation](https://docs.immudb.io/master/running/download.html).
If you want to use the `immudb` in `docker-compose.yml`, you can add the following in your compose file:
```
immudb:
image: codenotary/immudb:latest
ports:
- 3322:3322
- 9497:9497
volumes:
- "../volumes/immudb/data:/var/lib/immudb"
- "../volumes/immudb/config:/etc/immudb"
- "../volumes/immudb/logs:/var/log/immudb"
```
## Usage
### Client initialization
```python3
client = ImmudbWrapper(
username="user",
password="password",
database="database",
)
```
### File notarization
This method calculates the file hash and file size and inserts them with the user's metadata (if provided), into the database.
```python3
response = client.notarize_file(
"./hello_world.sh",
user_metadata={
"foo": "bar",
},
)
print(response)
{
'id': 1,
'key': '4db5767d4bf4221a5656b163ef1bae833095255f80d1ad5be21dfef84caf4126',
'value': {
'Name': 'hello_world.sh',
'Kind': 'file',
'Size': '2.62 KB',
'Hash': '4db5767d4bf4221a5656b163ef1bae833095255f80d1ad5be21dfef84caf4126',
'Metadata': {
'sbom_api_ver': '0.2',
'foo': 'bar',
},
},
'timestamp': 1690794033,
'verified': True,
'refkey': None,
'revision': 1,
}
```
### Git repo notarization
This method extracts the git metadata from a provided git directory, calculates the hash of the extracted metadata and inserts that metadata with the user's metadata (if provided), into the database. Falls with a `InvalidGitRepositoryError` when accepting non-git directories.
```python3
response = client.notarize_git_repo(
"./immudb_wrapper/",
user_metadata={
"foo": "bar",
},
)
print(response)
{
'id': 2,
'key': 'a87f7a948900e04812c095fb457e994926fc28c2a789471521fcc076cc4d8658',
'value': {
'Name': 'git@git.almalinux.org:danfimov/immudb_wrapper.git@c093e0f',
'Kind': 'git',
'Size': '30.52 KB',
'Hash': 'a87f7a948900e04812c095fb457e994926fc28c2a789471521fcc076cc4d8658',
'Metadata': {
'git': {
'Author': {
'Email': 'anfimovdan@gmail.com',
'Name': 'Daniil Anfimov',
'When': '2023-07-22T12:53:22+0200',
},
'Commit': 'c093e0f468c2810f76d4c09c340c58380bd965b1',
'Committer': {
'Email': 'anfimovdan@gmail.com',
'Name': 'Daniil Anfimov',
'When': '2023-07-22T12:53:22+0200',
},
'Message': 'Initial commit\n',
'PGPSignature': '',
'Parents': [],
'Tree': '4526550b9c6b77e7e10f6e57dfecfe0504c5166f',
},
'sbom_api_ver': '0.2',
'foo': 'bar',
},
},
'timestamp': 1690794260,
'verified': True,
'refkey': None,
'revision': 1,
}
```
### Git repo authentication
This method extracts the git metadata from a provided git directory, calculates the hash of the extracted metadata, and looks up the metadata of that hash in the database. Returns a dict with an error if metadata doesn't exist in the database.
```python3
response = client.authenticate_git_repo("./immudb_wrapper/")
print(response)
{
'id': 2,
'key': 'a87f7a948900e04812c095fb457e994926fc28c2a789471521fcc076cc4d8658',
'value': {
'Name': 'git@git.almalinux.org:danfimov/immudb_wrapper.git@c093e0f',
'Kind': 'git',
'Size': '30.52 KB',
'Hash': 'a87f7a948900e04812c095fb457e994926fc28c2a789471521fcc076cc4d8658',
'Metadata': {
'git': {
'Author': {
'Email': 'anfimovdan@gmail.com',
'Name': 'Daniil Anfimov',
'When': '2023-07-22T12:53:22+0200',
},
'Commit': 'c093e0f468c2810f76d4c09c340c58380bd965b1',
'Committer': {
'Email': 'anfimovdan@gmail.com',
'Name': 'Daniil Anfimov',
'When': '2023-07-22T12:53:22+0200',
},
'Message': 'Initial commit\n',
'PGPSignature': '',
'Parents': [],
'Tree': '4526550b9c6b77e7e10f6e57dfecfe0504c5166f',
},
'sbom_api_ver': '0.2',
'foo': 'bar',
},
},
'timestamp': 1690794260,
'verified': True,
'refkey': None,
'revision': 1,
}
response = client.authenticate_git_repo("./immudb_wrapper_foobar/")
print(response)
{'error': 'Traceback (most recent call last):\n'
' File "/code/env/bin/immudb_wrapper.py", line 247, in '
'verified_get\n'
' self.verifiedGet(\n'
' File "/code/env/lib/python3.9/site-packages/immudb/client.py", '
'line 667, in verifiedGet\n'
' return verifiedGet.call(self._stub, self._rs, key, '
'verifying_key=self._vk, atRevision=atRevision)\n'
' File '
'"/code/env/lib/python3.9/site-packages/immudb/handler/verifiedGet.py", '
'line 30, in call\n'
' ventry = service.VerifiableGet(req)\n'
' File '
'"/code/env/lib64/python3.9/site-packages/grpc/_interceptor.py", '
'line 247, in __call__\n'
' response, ignored_call = self._with_call(request,\n'
' File '
'"/code/env/lib64/python3.9/site-packages/grpc/_interceptor.py", '
'line 290, in _with_call\n'
' return call.result(), call\n'
' File "/code/env/lib64/python3.9/site-packages/grpc/_channel.py", '
'line 379, in result\n'
' raise self\n'
' File '
'"/code/env/lib64/python3.9/site-packages/grpc/_interceptor.py", '
'line 274, in continuation\n'
' response, call = self._thunk(new_method).with_call(\n'
' File "/code/env/lib64/python3.9/site-packages/grpc/_channel.py", '
'line 1043, in with_call\n'
' return _end_unary_response_blocking(state, call, True, None)\n'
' File "/code/env/lib64/python3.9/site-packages/grpc/_channel.py", '
'line 910, in _end_unary_response_blocking\n'
' raise _InactiveRpcError(state) # pytype: '
'disable=not-instantiable\n'
'grpc._channel._InactiveRpcError: <_InactiveRpcError of RPC that '
'terminated with:\n'
'\tstatus = StatusCode.UNKNOWN\n'
'\tdetails = "tbtree: key not found"\n'
'\tdebug_error_string = "UNKNOWN:Error received from peer '
'ipv4:172.18.0.2:3322 {grpc_message:"tbtree: key not found", '
'grpc_status:2, '
'created_time:"2023-07-31T09:13:55.947555151+00:00"}"\n'
'>\n'}
```
### File authentication
This method calculates the file hash of the provided file and looks up the metadata of that hash in the database. Returns a dict with an error if metadata doesn't exist in the database.
```python3
response = client.authenticate_file("./hello_world.sh")
print(response)
{
'id': 1,
'key': '4db5767d4bf4221a5656b163ef1bae833095255f80d1ad5be21dfef84caf4126',
'value': {
'Name': 'hello_world.sh',
'Kind': 'file',
'Size': '2.62 KB',
'Hash': '4db5767d4bf4221a5656b163ef1bae833095255f80d1ad5be21dfef84caf4126',
'Metadata': {
'sbom_api_ver': '0.2',
'foo': 'bar',
},
},
'timestamp': 1690794033,
'verified': True,
'refkey': None,
'revision': 1,
}
response = client.authenticate_file("./hello_world1.sh")
print(response)
{'error': 'Traceback (most recent call last):\n'
' File "/code/env/bin/immudb_wrapper.py", line 247, in '
'verified_get\n'
' self.verifiedGet(\n'
' File "/code/env/lib/python3.9/site-packages/immudb/client.py", '
'line 667, in verifiedGet\n'
' return verifiedGet.call(self._stub, self._rs, key, '
'verifying_key=self._vk, atRevision=atRevision)\n'
' File '
'"/code/env/lib/python3.9/site-packages/immudb/handler/verifiedGet.py", '
'line 30, in call\n'
' ventry = service.VerifiableGet(req)\n'
' File '
'"/code/env/lib64/python3.9/site-packages/grpc/_interceptor.py", '
'line 247, in __call__\n'
' response, ignored_call = self._with_call(request,\n'
' File '
'"/code/env/lib64/python3.9/site-packages/grpc/_interceptor.py", '
'line 290, in _with_call\n'
' return call.result(), call\n'
' File "/code/env/lib64/python3.9/site-packages/grpc/_channel.py", '
'line 379, in result\n'
' raise self\n'
' File '
'"/code/env/lib64/python3.9/site-packages/grpc/_interceptor.py", '
'line 274, in continuation\n'
' response, call = self._thunk(new_method).with_call(\n'
' File "/code/env/lib64/python3.9/site-packages/grpc/_channel.py", '
'line 1043, in with_call\n'
' return _end_unary_response_blocking(state, call, True, None)\n'
' File "/code/env/lib64/python3.9/site-packages/grpc/_channel.py", '
'line 910, in _end_unary_response_blocking\n'
' raise _InactiveRpcError(state) # pytype: '
'disable=not-instantiable\n'
'grpc._channel._InactiveRpcError: <_InactiveRpcError of RPC that '
'terminated with:\n'
'\tstatus = StatusCode.UNKNOWN\n'
'\tdetails = "tbtree: key not found"\n'
'\tdebug_error_string = "UNKNOWN:Error received from peer '
'ipv4:172.18.0.2:3322 {grpc_message:"tbtree: key not found", '
'grpc_status:2, '
'created_time:"2023-07-31T09:13:55.947555151+00:00"}"\n'
'>\n'}
```
## Contribution
If you wish to contribute to `immudb_wrapper`, just create a fork and make a PR.

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import hashlib
import json
import logging
import os
import re
from dataclasses import asdict
from pathlib import Path
from traceback import format_exc
from typing import IO, Any, Dict, Optional, Union
from urllib.parse import urlparse
from git import Repo
from grpc import RpcError
from immudb import ImmudbClient
from immudb.datatypes import SafeGetResponse
from immudb.rootService import RootService
Dict = Dict[str, Any]
class ImmudbWrapper(ImmudbClient):
def __init__(
self,
username: str = 'immudb',
password: str = 'immudb',
database: str = 'defaultdb',
immudb_address: Optional[str] = 'localhost:3322',
root_service: Optional[RootService] = None,
public_key_file: Optional[str] = None,
timeout: Optional[int] = None,
max_grpc_message_length: Optional[int] = None,
logger: Optional[logging.Logger] = None,
):
"""
The wrapper around binary `immuclient` from Codenotary.
Args:
username (str): Immudb username to log in (default: "immudb").
password (str): Immudb password to log in (default: "immudb").
database (str): Immudb database to be used (default: "defaultdb").
immudb_address (str, optional): url in format ``host:port``
(e.g. ``localhost:3322``) of your immudb instance.
Defaults to ``localhost:3322`` when no value is set.
root_service (RootService, optional): object that implements
RootService, allowing requests to be verified. Optional.
By default in-memory RootService instance will be created
public_key_file (str, optional): path of the public key to use
for authenticating requests. Optional.
timeout (int, optional): global timeout for GRPC requests. Requests
will hang until the server responds if no timeout is set.
max_grpc_message_length (int, optional): maximum size of message
the server should send. The default (4Mb) is used if no
value is set.
logger (logging.Logger, optional): Logger to be used
"""
self.username = username
self.password = password
self.database = database
if not logger:
self._logger = logging.getLogger()
super().__init__(
immudUrl=immudb_address,
rs=root_service,
publicKeyFile=public_key_file,
timeout=timeout,
max_grpc_message_length=max_grpc_message_length,
)
self.login(
username=self.username,
password=self.password,
)
self.useDatabase(self.encode(self.database))
@classmethod
def get_version(cls) -> str:
return "0.1.0"
def encode(
self,
value: Union[str, bytes, dict],
) -> bytes:
if isinstance(value, str):
result = value.encode()
elif isinstance(value, bytes):
result = value
elif isinstance(value, dict):
result = json.dumps(value).encode()
else:
raise ValueError(
"Cannot encode value that isn't str, bytes or dict."
)
return result
def to_dict(
self,
response: SafeGetResponse,
) -> Dict:
result = asdict(response)
result['key'] = result['key'].decode()
result['value'] = json.loads(result['value'].decode())
return result
def get_size_format(
self,
value: int,
factor: int = 1024,
suffix: str = "B",
Review

I guess better to move the list of keys to a separate var and use them in the loop

I guess better to move the list of keys to a separate var and use them in the loop
) -> str:
"""
Scale bytes to its proper byte format
e.g:
1253656 => '1.20 MB'
1253656678 => '1.17 GB'
"""
for unit in [
"",
"K",
"M",
"G",
"T",
"P",
"E",
"Z",
]:
if value < factor:
return f"{value:.2f} {unit}{suffix}"
value /= factor
return f"{value:.2f} Y{suffix}"
def get_directory_size(self, path: Union[str, os.PathLike]) -> int:
return sum(file.stat().st_size for file in Path(path).rglob('*'))
def get_file_size(self, file_path: Union[str, os.PathLike]) -> int:
Review
For the future https://pypi.org/project/humanize/
return Path(file_path).stat().st_size
def get_hasher(self, checksum_type: str = 'sha256'):
"""
Returns a corresponding hashlib hashing function for the specified
checksum type.
Parameters
----------
checksum_type : str
Checksum type (e.g. sha1, sha256).
Returns
-------
hashlib._Hash
Hashlib hashing function.
"""
return hashlib.new(checksum_type)
def hash_file(
self,
file_path: Union[str, IO],
hash_type: str = 'sha256',
buff_size: int = 1048576,
hasher=None,
) -> str:
"""
Returns checksum (hexadecimal digest) of the file.
Parameters
----------
file_path : str or file-like
File to hash. It could be either a path or a file descriptor.
hash_type : str
Hash type (e.g. sha1, sha256).
buff_size : int
Number of bytes to read at once.
hasher : hashlib._Hash
Any hash algorithm from hashlib.
Returns
-------
str
Checksum (hexadecimal digest) of the file.
"""
if hasher is None:
hasher = self.get_hasher(hash_type)
def feed_hasher(_fd):
buff = _fd.read(buff_size)
while len(buff):
if not isinstance(buff, bytes):
buff = buff.encode()
hasher.update(buff)
buff = _fd.read(buff_size)
if isinstance(file_path, str):
with open(file_path, "rb") as fd:
feed_hasher(fd)
else:
file_path.seek(0)
feed_hasher(file_path)
Review

Why didn't you use utf-8?

Why didn't you use utf-8?
return hasher.hexdigest()
def hash_content(
self,
content: Union[str, bytes],
) -> str:
hasher = self.get_hasher()
if isinstance(content, str):
content = content.encode()
hasher.update(content)
return hasher.hexdigest()
@staticmethod
def extract_git_metadata(
repo_path: Union[str, os.PathLike],
) -> Dict:
with Repo(repo_path) as repo:
url = urlparse(repo.remote().url)
commit = repo.commit()
name = (
f'git@{url.netloc}'
f'{re.sub(r"^/", ":", url.path)}'
f'@{commit.hexsha[:7]}'
)
return {
'Name': name,
'git': {
'Author': {
'Email': commit.author.email,
'Name': commit.author.name,
'When': commit.authored_datetime.strftime(
'%Y-%m-%dT%H:%M:%S%z',
),
},
'Commit': commit.hexsha,
'Committer': {
'Email': commit.committer.email,
'Name': commit.committer.name,
'When': commit.committed_datetime.strftime(
'%Y-%m-%dT%H:%M:%S%z',
),
},
'Message': commit.message,
'PGPSignature': commit.gpgsig,
'Parents': [
parent.hexsha for parent in commit.iter_parents()
],
'Tree': commit.tree.hexsha,
},
}
@property
def default_metadata(self) -> Dict:
return {
'sbom_api_ver': '0.2',
}
def verified_get(
self,
key: Union[str, bytes],
revision: Optional[int] = None,
) -> Dict:
try:
return self.to_dict(
self.verifiedGet(
key=self.encode(key),
atRevision=revision,
),
)
except RpcError:
return {'error': format_exc()}
def verified_set(
self,
key: Union[str, bytes],
value: Union[str, bytes, Dict],
) -> Dict:
try:
return asdict(
self.verifiedSet(
key=self.encode(key),
value=self.encode(value),
),
)
except RpcError:
return {'error': format_exc()}
def notarize(
self,
key: str,
value: Union[str, bytes, Dict],
) -> Dict:
result = self.verified_set(key, value)
if 'error' in result:
return result
return self.verified_get(key)
def notarize_file(
self,
file: str,
user_metadata: Optional[Dict] = None,
) -> Dict:
"""
This method calculates the file hash and file size and inserts them
with the user's metadata (if provided), into the database.
"""
if not user_metadata:
user_metadata = {}
hash_file = self.hash_file(file)
payload = {
'Name': Path(file).name,
'Kind': 'file',
'Size': self.get_size_format(self.get_file_size(file)),
'Hash': hash_file,
'Metadata': {
**self.default_metadata,
**user_metadata,
},
}
return self.notarize(
key=hash_file,
value=payload,
)
def notarize_git_repo(
self,
repo_path: Union[str, os.PathLike],
user_metadata: Optional[Dict] = None,
) -> Dict:
"""
This method extracts the git metadata from a provided git directory,
calculates the hash of the extracted metadata and inserts that
metadata with the user's metadata (if provided), into the database.
Falls with a `InvalidGitRepositoryError` when
accepting non-git directories.
"""
if not user_metadata:
user_metadata = {}
git_metadata = self.extract_git_metadata(repo_path)
metadata_hash = self.hash_content(json.dumps(git_metadata['git']))
payload = {
'Name': git_metadata['Name'],
'Kind': 'git',
'Size': self.get_size_format(self.get_directory_size(repo_path)),
'Hash': metadata_hash,
'Metadata': {
'git': git_metadata['git'],
**self.default_metadata,
**user_metadata,
},
}
return self.notarize(
key=metadata_hash,
value=payload,
)
def authenticate(
self,
key: Union[str, bytes],
) -> Dict:
return self.verified_get(key)
def authenticate_file(self, file: str) -> Dict:
"""
This method calculates the file hash of the provided file
and looks up the metadata of that hash in the database.
Returns a dict with an error if metadata doesn't exist in the database.
"""
return self.authenticate(self.hash_file(file))
def authenticate_git_repo(
self,
repo_path: Union[str, os.PathLike],
) -> Dict:
"""
This method extracts the git metadata from a provided git directory,
calculates the hash of the extracted metadata, and looks up
the metadata of that hash in the database.
Returns a dict with an error if metadata doesn't exist in the database.
"""
metadata_hash = self.hash_content(
json.dumps(
self.extract_git_metadata(repo_path)['git'],
),
)
return self.authenticate(metadata_hash)

26
setup.py Normal file
View File

@ -0,0 +1,26 @@
from setuptools import setup
setup(
name='immudb_wrapper',
version='0.1.0',
author='Daniil Anfimov',
author_email='anfimovdan@gmail.com',
description='The wrapper around binary `immudbclient` from Codenotary.',
url='https://git.almalinux.org/almalinux/immudb_wrapper',
project_urls={
'Bug Tracker': 'https://git.almalinux.org/almalinux/immudb_wrapper/issues',
},
classifiers=[
'Programming Language :: Python :: 3',
'License :: OSI Approved :: '
'GNU General Public License v3 or later (GPLv3+)',
'Operating System :: OS Independent',
],
py_modules=['immudb_wrapper'],
scripts=['immudb_wrapper.py'],
install_requires=[
'GitPython>=3.1.20',
'immudb-py>=1.4.0'
],
python_requires='>=3.6',
)