n8n Offline Digipin Microservice API Workflow

This n8n workflow provides a basic framework for an API endpoint that can be extended to create an "offline digipin microservice." It listens for incoming HTTP requests, and then, based on the request, it can be configured to perform different actions and respond accordingly.

What it does

This workflow sets up a foundational API endpoint with conditional logic:

1. Listens for incoming requests: An HTTP Webhook node acts as the entry point, waiting for any incoming API calls.
2. Routes based on conditions: A Switch node is positioned to evaluate conditions in the incoming request. This is where you would define different "cases" or "paths" for your microservice (e.g., different API endpoints or commands).
3. Responds to the caller: A "Respond to Webhook" node is included, ready to send a response back to the client that initiated the API call. This node would typically be configured within each branch of the Switch node to send specific data or status codes.
4. Includes a Code node for custom logic: A Code node is available, allowing for the execution of custom JavaScript. This is where you would implement the core logic for generating or processing "digipins," interacting with databases (if applicable), or performing any other necessary computations.
5. Provides a Sticky Note for documentation: A Sticky Note is present for adding internal documentation, explanations, or to-do items directly within the workflow canvas.

Prerequisites/Requirements

• n8n Instance: A running n8n instance (self-hosted or cloud).
• Basic API Knowledge: Understanding of how APIs work (HTTP methods, request/response bodies).

Setup/Usage

1. Import the workflow:
   • In your n8n instance, click "Workflows" in the left sidebar.
   • Click "New Workflow" or import the provided JSON.
2. Activate the Webhook:
   • The "Webhook" node will automatically generate a unique URL when the workflow is activated. This is your API endpoint.
3. Configure the Switch Node:
   • Edit the "Switch" node to define your routing logic. You'll likely want to check for specific parameters in the incoming webhook data (e.g., {{ $json.query.action }} or {{ $json.body.command }}).
   • Add branches (outputs) to the Switch node for each distinct action or "digipin" generation scenario you want to support.
4. Implement Custom Logic (Code Node):
   • Connect the "Code" node to the appropriate branch(es) of your "Switch" node.
   • Edit the "Code" node to write your JavaScript logic for generating, validating, or retrieving "digipins" based on the input.
5. Configure Webhook Responses:
   • Connect "Respond to Webhook" nodes to the end of each logical path.
   • Configure each "Respond to Webhook" node to send back the appropriate data (e.g., the generated digipin, status messages, error codes) as JSON or plain text.
6. Activate the Workflow:
   • Once configured, activate the workflow by toggling the "Active" switch in the top right corner of the n8n editor.
7. Test the API:
   • Use a tool like Postman, Insomnia, curl, or a web browser to send requests to the Webhook URL and test your implemented logic.

This workflow serves as a flexible starting point. You would expand upon the "Code" node and "Switch" logic to build out the specific functionality required for your "offline digipin microservice API for precise location mapping in India."