Audit Log

Added in version 0.5.

The Audit log (or Audit Trail) is a core system of HARP that stores all transactions passing through the proxy (HTTP requests and responses, whether or not forwarded to a remote backend) in a storage for future inspection.

Turned on by default, it allows to see the transaction content on the HARP dashboard. Transactions are cleaned up by the Janitor application after a configured delay (by default, 2 months).

Enabled by default, it allows viewing transaction content on the HARP dashboard. Transactions are cleaned up by the Janitor Application after a configured delay (default is 2 months).

It is implemented by two applications working together:

• In the Proxy Application, the HttpProxyController dispatches transaction-related events.

• In the Storage Application, the StorageAsyncWorkerQueue reacts to these events and attempts to store them asynchronously in a storage.

Occasionally, high network pressure may cause the background worker to skip storing transaction data to maintain the system’s ability to process requests.