|
|
| (7 intermediate revisions by the same user not shown) |
| Line 1: |
Line 1: |
| Build a Python CRUD interface for the Solid server at https://solidcommunity.net (managed by the Open Data Institute) allowing structured programmatic interaction with Solid Pods and demonstrating decentralized data principles in action.
| |
|
| |
|
| Below is a structured work plan focusing on clarity, security, and reusability.
| |
|
| |
| ==🧭 Objective==
| |
|
| |
| Develop a Python-based CRUD (Create, Read, Update, Delete) interface for interacting with user data stored on Solid Pods hosted at https://solidcommunity.net.
| |
|
| |
| '''The interface will:'''
| |
|
| |
| Authenticate via Solid OIDC (OpenID Connect)
| |
|
| |
| Perform RDF-based data operations (read/write triples)
| |
|
| |
| Be modular and reusable in scripts or web apps
| |
|
| |
| ==🧩 1. Background & Setup==
| |
|
| |
| '''1.1. Understand the Solid Protocol'''
| |
|
| |
| Review [https://solidproject.org/TR/protocol Solid Protocol] and [https://solidproject.org/for_developers Solid API].
| |
|
| |
| Understand:
| |
|
| |
| *WebID: User identity (https://username.solidcommunity.net/profile/card#me)
| |
| *Pod: Personal data store (https://username.solidcommunity.net/public/)
| |
| *Access control: Uses WAC or ACP
| |
| *Authentication: OIDC using solidcommunity.net as the issuer
| |
|
| |
|
| |
| '''1.2. Development Environment'''
| |
|
| |
| Install dependencies:
| |
| python3 -m venv venv
| |
| source venv/bin/activate
| |
| pip install requests rdflib solid-auth-client
| |
|
| |
|
| |
| (We’ll use requests for HTTP, rdflib for RDF parsing, and a Python OIDC client for authentication.)
| |
|
| |
| ==🧠 2. Authentication Module==
| |
| 2.1. Register an App with solidcommunity.net
| |
|
| |
| Visit: https://solidcommunity.net/registerApp
| |
|
| |
| Obtain:
| |
|
| |
| client_id
| |
|
| |
| client_secret
| |
|
| |
| redirect_uri
| |
|
| |
| 2.2. Implement OIDC Flow
| |
|
| |
| Use solid_oidc or a generic OIDC library like requests-oauthlib:
| |
|
| |
| from requests_oauthlib import OAuth2Session
| |
|
| |
| authorization_base_url = "https://solidcommunity.net/.well-known/openid-configuration"
| |
| token_url = "https://solidcommunity.net/token"
| |
|
| |
| solid = OAuth2Session(client_id, redirect_uri=redirect_uri)
| |
| authorization_url, state = solid.authorization_url(authorization_base_url)
| |
| print("Visit:", authorization_url)
| |
|
| |
| # After user grants access, use callback URL
| |
| token = solid.fetch_token(token_url, client_secret=client_secret, authorization_response=callback_url)
| |
|
| |
|
| |
| ✅ Deliverable: Authenticated access token for use in CRUD operations.
| |
|
| |
| ==🧱 3. Core CRUD Functions==
| |
|
| |
| Define a class SolidPodClient:
| |
|
| |
| import requests
| |
| from rdflib import Graph
| |
|
| |
| class SolidPodClient:
| |
| def __init__(self, base_url, access_token):
| |
| self.base_url = base_url.rstrip('/')
| |
| self.headers = {"Authorization": f"Bearer {access_token}"}
| |
|
| |
| def read(self, path):
| |
| url = f"{self.base_url}/{path.lstrip('/')}"
| |
| r = requests.get(url, headers=self.headers)
| |
| g = Graph()
| |
| g.parse(data=r.text, format='turtle')
| |
| return g
| |
|
| |
| def create(self, path, data, content_type="text/turtle"):
| |
| url = f"{self.base_url}/{path.lstrip('/')}"
| |
| r = requests.put(url, headers={**self.headers, "Content-Type": content_type}, data=data)
| |
| return r.status_code
| |
|
| |
| def update(self, path, data, content_type="text/turtle"):
| |
| return self.create(path, data, content_type)
| |
|
| |
| def delete(self, path):
| |
| url = f"{self.base_url}/{path.lstrip('/')}"
| |
| return requests.delete(url, headers=self.headers).status_code
| |
|
| |
|
| |
| ✅ Deliverable: A reusable Python module that can:
| |
|
| |
| Read RDF data from the Pod
| |
|
| |
| Write (create/update) new resources
| |
|
| |
| Delete resources
| |
|
| |
| ==⚙️ 4. Testing and Verification==
| |
| 4.1. Test Environment
| |
|
| |
| Use a test Pod at https://yourusername.solidcommunity.net/public/test/.
| |
|
| |
| 4.2. Example Operations
| |
| # Example: Create a resource
| |
| data = """
| |
| @prefix schema: <http://schema.org/> .
| |
| <> a schema:Event ;
| |
| schema:name "Cully Community Meeting" ;
| |
| schema:startDate "2025-11-10" .
| |
| """
| |
| client.create("public/test/event.ttl", data)
| |
|
| |
| # Example: Read resource
| |
| graph = client.read("public/test/event.ttl")
| |
| for s, p, o in graph:
| |
| print(s, p, o)
| |
|
| |
| ==🔐 5. Access Control (Optional Extension)==
| |
| 5.1. Web Access Control (WAC)
| |
|
| |
| Solid allows .acl files to specify access:
| |
|
| |
| @prefix acl: <http://www.w3.org/ns/auth/acl#> .
| |
| <#owner>
| |
| a acl:Authorization ;
| |
| acl:agent <https://yourusername.solidcommunity.net/profile/card#me> ;
| |
| acl:accessTo <./event.ttl> ;
| |
| acl:mode acl:Read, acl:Write, acl:Control .
| |
|
| |
| 5.2. Automate ACL Management
| |
|
| |
| Add an optional set_permissions() function to your client.
| |
|
| |
| ==🚀 6. Packaging and Distribution==
| |
|
| |
| *Organize your code as a Python package:
| |
|
| |
| solid_client/</code>
| |
| ├── __init__.py</code>
| |
| ├── auth.py</code>
| |
| ├── client.py</code>
| |
| ├── utils.py</code>
| |
|
| |
| *Add a <code>setup.py</code> and <code>README.md</code>
| |
| *Optional: Publish to PyPI as solid-crud-client
| |
|
| |
| ==📘 7. Future Enhancements==
| |
|
| |
|
| |
|
| |
| {|
| |
| | style="width: 20px"|
| |
| | style="width: 100px"|'''Feature'''
| |
| | style="width: 300px"|'''Description'''
| |
| |-
| |
| |
| |
| |🧩 JSON-LD Support
| |
| |Parse/write JSON-LD data natively
| |
| |-
| |
| |
| |
| |🔄 SPARQL Queries
| |
| |Support querying via SPARQL endpoints
| |
| |-
| |
| |
| |
| |🔒 DID/VC Authentication
| |
| |Integrate W3C DIDs and Verifiable Credentials
| |
| |-
| |
| |
| |
| |🌐 Web Interface
| |
| |Build a lightweight Streamlit or Flask UI
| |
| |-
| |
| |
| |
| |📊 Integration
| |
| |Connect with Semantic MediaWiki or Linked Data dashboards
| |
| |-
| |
| |
| |
| |🗂️
| |
| |Summary Timeline
| |
| |}
| |
|
| |
|
| |
|
| |
| {|
| |
| |'''Week'''
| |
| |'''Task'''
| |
| |-
| |
| |1
| |
| |Study Solid protocol and register app
| |
| |-
| |
| |2
| |
| |Implement authentication and token retrieval
| |
| |-
| |
| |3
| |
| |Build SolidPodClient CRUD module
| |
| |-
| |
| |4
| |
| |Test against solidcommunity.net Pods
| |
| |-
| |
| |5
| |
| |Add ACL and RDF utilities
| |
| |-
| |
| |6
| |
| |Package and document
| |
| |}
| |
|
| |
| Would you like me to generate a starter Python repository (with full file structure and working code for authentication + CRUD) so you can clone and start from it?
| |