Overview

This node integrates with Mercure APIs to either subscribe to topics or publish messages to topics. It is useful for real-time communication scenarios where you want to receive updates on specific topics or broadcast messages to subscribers. For example, you can use it to subscribe to live updates on a news feed or publish notifications to multiple clients.

Use Case Examples

1. Subscribe to multiple topics to receive real-time updates on those topics.
2. Publish a message to one or more topics to notify subscribers about an event.

Properties

Output

JSON

• url - The Mercure hub URL for subscriber operation.
• token - The JWT token generated for subscriber authentication.
• topics - The list of topics the subscriber is subscribed to.
• id - The response ID from the publish operation indicating successful message publication.

Dependencies

• Requires Mercure API credentials including host URL and JWT keys for subscriber and publisher authentication.

Troubleshooting

• Ensure the Mercure credentials (host, subscriber JWT key, publisher JWT key) are correctly configured to avoid authentication errors.
• If the node fails on a specific item, check the 'continue on fail' setting to handle errors gracefully.
• Verify that the topics string is correctly formatted as a comma separated list to avoid token generation issues.