n8n Workflow: Scheduled Data Retrieval and Conditional Processing

This n8n workflow demonstrates a basic scheduled process that retrieves data, then conditionally routes it based on a simple check. It's a foundational example for building more complex data processing and automation tasks.

What it does

This workflow performs the following steps:

1. Triggers on a Schedule: The workflow starts automatically at predefined intervals using a Cron trigger.
2. Retrieves Data: It makes an HTTP request, likely to an API endpoint, to fetch some data.
3. Applies Conditional Logic: It evaluates the retrieved data using an If node.
4. Routes Data (No Operation):
   • If the condition in the If node evaluates to true, the data is passed to a No Operation, do nothing node, effectively ending that branch of the workflow without further action.
   • If the condition in the If node evaluates to false, the data is passed to an Elasticsearch node, indicating an intention to interact with an Elasticsearch instance.

Prerequisites/Requirements

To use this workflow, you will need:

• n8n Instance: A running n8n instance.
• HTTP Endpoint: An accessible HTTP endpoint that the HTTP Request node can query to retrieve data.
• Elasticsearch Account/Instance: If the If condition evaluates to false, the workflow is configured to interact with an Elasticsearch instance. You would need credentials and configuration for this.

Setup/Usage

1. Import the Workflow:
   • Copy the provided JSON code.
   • In your n8n instance, go to "Workflows" and click "New".
   • Click the "Import from JSON" button and paste the JSON code.
   • Click "Import".
2. Configure the Cron Trigger:
   • Open the Cron node.
   • Adjust the schedule to your desired frequency (e.g., every hour, daily).
3. Configure the HTTP Request Node:
   • Open the HTTP Request node.
   • Set the URL to the API endpoint you wish to query.
   • Configure any necessary Authentication (e.g., API Key, OAuth2) or Headers.
4. Configure the If Node:
   • Open the If node.
   • Define the Conditions based on the data you expect from the HTTP Request node. For example, you might check if a specific field exists or has a certain value.
5. Configure the Elasticsearch Node (if applicable):
   • Open the Elasticsearch node.
   • Select or create an Elasticsearch credential.
   • Configure the desired Operation (e.g., Index, Get, Search) and Index based on your needs.
6. Activate the Workflow:
   • Once configured, save the workflow and activate it by toggling the "Active" switch in the top right corner of the workflow editor.

This workflow provides a flexible starting point for automating tasks that involve scheduled data retrieval, conditional logic, and integration with Elasticsearch.