Immu-Django

Immu-Django is a Django integration for immudb, a lightweight, high-performance immutable database. This integration allows you to easily connect your Django application to an immudb server, providing the benefits of immutability, cryptographic verification, and tamper-proof storage for your application's data.

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Tested on

• Django 4.2
• immudb-py 1.4.0
• Immudb 1.4.1
• Immuclient 1.4.1

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Features

• Seamless integration of immudb with Django.
• Automatic storage of Django model data in immudb.
• Immutable and tamper-proof storage for your application's data.
• Cryptographic verification of data integrity.
• Ability to query historical versions of data.

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Installation

1. Install immudb: Follow the installation instructions provided in the immudb repository's documentation: immudb Installation.

2. Install in your venv using pip:

   pip install immu-django
   

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Optinal Configuration

Define Immu confs inside the settings.py

• IMMU_URL = (str) (default: 'localhost:3322') The url/ip where the immudb is hosted.
• IMMU_DEFAULT_EXPIRE_TIME = (dict) (default: None) The default time for key/value transactions expire.
• IMMU_DEFAULT_DB = (str) (default: 'defaultdb') The default database used for immu models.
• IMMU_USER = (str) (default: 'immudb') The user for login inside the immudb.
• IMMU_PASSWORD = (str) (default: 'immudb') The password for login inside the immudb.
• IMMU_PUBLIC_KEY = (str) (default: None) The public key path for immudb encrypt system.

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Basic Usage

note: if you want to learn all about immu-django library read immu_django.abc_models.py file

Immu model key/value

1. Import the abstract class and the class decorator inside your app models.py:

from immu_django.abc_models import ImmudbKeyField, immu_key_value_class

2. Import the django models:

from django.db import models

3. Create an model class that only hierarchys ImmudbKeyField and have the immu_key_value_class as decorator:

@immu_key_value_class
class ExampleModel(ImmudbKeyField):
    

4. Place model atributes inside the class:

@immu_key_value_class
class ExampleModel(ImmudbKeyField):
    id = models.BigAutoField(primary_key=True)
    name = models.CharField(max_length=255, null=True)
    number = models.IntegerField()

5. Use the class methods for interact with immudb key/value model:

• create = Create an key value row inside the immudb database: ExampleModel.create(key='row_key', name='Jack', number=1) -> None

• create_mult = Create multiples objects inside the immu database in one transaction: ExampleModel.create_mult(obj_list=[{'key': 'row_key', 'values': {'name': 'Jack', 'number': 1}}, ...]) -> None

• set_ref = Set a reference value to a object with the given key: ExampleModel.set_ref(key='row_key', ref_key='ref_key') -> None

• set_score = Set collection and score for a object: ExampleModel.set_score(key='row_key', collection='collection_key', score=10.2) -> None

• delete = Set the object with the given key as deleted: ExampleModel.delete(key='row_key') -> None

• after = Get the verified row after the key and transation id: ExampleModel.after(key='row_key', tx_id=1) -> Dict[key (str), value (dict), tx_id (int), revision (int), verified (bool), timestamp (int), ref_key (str | None)]

• all = Get all objects inside the immu database ExampleModel.all() -> Dict[key (str): value (dict)]

• get = Get all objects inside the immu database: ExampleModel.get(key_or_ref='row_key_or_row_reference') -> Dict[key (str), value (dict), tx_id (int), revision (int)]

• get_score = Get rows based on a collection using scores: ExampleModel.get_score(colection='collection_key') -> List[Dict[key (str), value (dict), tx_id (int), revision (int), score(float)], ...]

• get_tx = Get all rows keys keys that have the given transaction id: ExampleModel.get_tx(tx_id=1) -> List['row_key', ...]

• get_with_tx = Get one only verified row using a key and transtion id: ExampleModel.get_with_tx(key='row_key', tx_id=1) -> Dict[key (str), value (dict), tx_id (int), revision (int), verified (bool), timestamp (int), ref_key (str | None)]

• history = Get the history rows for a key: ExampleModel.history(key='row_key') -> List[Dict[key (str), value (dict), tx_id (int)]]

• starts_with = Get all objects that the key starts with the given prefix: ExampleModel.starts_with(prefix='row_') -> Dict[key (str): value (dict)]

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Immu model sql

1. Import the abstract class and the class decorator inside your app models.py:

from immu_django.abc_models import ImmudbSQL, immu_sql_class

2. Import the django models:

from django.db import models

3. Create an model class that only hierarchys ImmudbSQL and have the immu_sql_class as decorator:

@immu_sql_class
class ExampleModel(ImmudbSQL):
    

4. Place model atributes inside the class:

@immu_sql_class
class ExampleModel(ImmudbSQL):
    id = models.BigAutoField(primary_key=True)
    name = models.CharField(max_length=255, null=True)
    number = models.IntegerField()

5. Use the class methods for interact with immudb key/value model:

• create = Insert an transaction with one object inside this class sql table: ExampleModel.create(name='Jack', number=1) -> SQLModel
• create_mult = Insert an transaction with multiple objects inside this class sql table: ExampleModel.create_mult([{'name':'Jack', 'number':1}, ...]) -> list[SQLModel, ...]
• all = Search an object inside this class sql table: ExampleModel.all() -> list[SQLModel, ...]
• get = Get all objects inside the table: ExampleModel.get(**kwargs) -> SQLModel
• filter = Get all objects inside the table that match given parameters: ExampleModel.filter(**kwargs) -> list[SQLModel, ...]

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