dediregistry

DeDi Registry Plugin

A registry type plugin for Beckn-ONIX that integrates with DeDi (Decentralized Digital Infrastructure) registry services via the new DeDi Wrapper API.

Overview

The DeDi Registry plugin implements the RegistryLookup interface to retrieve public keys and participant information from DeDi registry services. It's used by the KeyManager for signature validation of incoming requests from other network participants.

Configuration

registry:
  id: dediregistry
  config:
    url: "https://dedi-wrapper.example.com/dedi"
    registryName: "subscribers.beckn.one"
    timeout: 30

Configuration Parameters

API Integration

DeDi Wrapper API Format

GET {url}/lookup/{subscriber_id}/{registryName}/{key_id}

Example: https://dedi-wrapper.com/dedi/lookup/bpp.example.com/subscribers.beckn.one/key-1

Authentication

No authentication required - DeDi wrapper API is public.

Expected Response Format

{
  "message": "Record retrieved from registry cache",
  "data": {
    "record_id": "76EU8vY9TkuJ9T62Sc3FyQLf5Kt9YAVgbZhryX6mFi56ipefkP9d9a",
    "details": {
      "url": "http://dev.np2.com/beckn/bap",
      "type": "BAP",
      "domain": "energy",
      "subscriber_id": "dev.np2.com",
      "signing_public_key": "384qqkIIpxo71WaJPsWqQNWUDGAFnfnJPxuDmtuBiLo=",
      "encr_public_key": "test-encr-key"
    },
    "created_at": "2025-10-27T11:45:27.963Z",
    "updated_at": "2025-10-27T11:46:23.563Z"
  }
}

Usage Context

Signature Validation Flow

1. External ONIX → Request with Authorization header
2. ONIX Receiver → parseHeader() extracts subscriberID/keyID  
3. validateSign step → KeyManager.LookupNPKeys()
4. KeyManager → DeDiRegistry.Lookup() with extracted values
5. DeDi Registry → GET {url}/lookup/{subscriberID}/{registryName}/{keyID}
6. DeDi Wrapper → Returns participant public keys
7. SignValidator → Validates signature using retrieved public key

Module Configuration Example

modules:
  - name: bppTxnReceiver
    handler:
      plugins:
        registry:
          id: dediregistry
          config:
            url: "https://dedi-wrapper.example.com/dedi"
            registryName: "subscribers.beckn.one"
            timeout: 30
      steps:
        - validateSign  # Required for registry lookup
        - addRoute

Field Mapping

Features

• No Authentication Required: DeDi wrapper API doesn't require API keys
• GET Request Format: Simple URL-based parameter passing
• Comprehensive Error Handling: Validates required fields and HTTP responses
• Simplified Response: Focuses on public key retrieval for signature validation
• Retry Support: Built-in retry mechanism for network resilience

Testing

Run the test suite:

go test ./pkg/plugin/implementation/dediregistry -v

The tests cover:

• URL construction validation
• Response parsing for new API format
• Error handling scenarios
• Configuration validation
• Plugin provider functionality

Migration Notes

This plugin replaces direct DeDi API integration with the new DeDi Wrapper API format:

• Removed: API key authentication, namespaceID parameters
• Added: Configurable registryName parameter
• Changed: POST requests → GET requests
• Updated: Response structure parsing (data.details object)
• Added: New URL path parameter format

Dependencies

• github.com/hashicorp/go-retryablehttp: HTTP client with retry logic
• Standard Go libraries for HTTP and JSON handling

Error Handling

• Configuration Errors: Missing url or registryName
• Network Errors: Connection failures, timeouts
• HTTP Errors: Non-200 status codes from DeDi wrapper
• Data Errors: Missing required fields in response
• Validation Errors: Empty subscriber ID or key ID in request