Overview

This node interacts with the NATS JetStream messaging system. Specifically, for the 'Acknowledge a Message' operation, it acknowledges a message from the stream consumer that was received earlier in the workflow by a NATS - JetStream Trigger node. This is useful in scenarios where message processing confirmation is required to ensure messages are not re-delivered or lost, such as in event-driven architectures or message queue workflows.

Use Case Examples

1. Acknowledging a message after successful processing to prevent re-delivery.
2. Confirming receipt of a message in a workflow that processes streaming data from NATS JetStream.

Properties

Output

JSON

• json - The acknowledged message data passed through the workflow.

Dependencies

• NATS JetStream service and credentials for API access

Troubleshooting

• If the node fails to acknowledge a message, ensure the NATS JetStream Trigger node earlier in the workflow correctly receives and passes the message.
• Errors related to authentication indicate issues with the provided NATS API credentials; verify and update them as needed.
• If the operation is not recognized, confirm the 'operation' parameter is set to 'acknowledge'.