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