Discarded Messages

The filters will either accept a message or silently discard it. However, instead of discarding unwanted messages, you may want to log them for further analysis. Ideally, such messages should be quarantined for someone (e.g., a support team) to analyze. The framework allows the filter to raise an exception or forward it to another channel when the message doesn’t fit the filter criteria.

To raise an exception, add the throw-exception-on-rejection attribute to the filter element. This is shown as highlighted code in the following snippet:

<int:filter input-channel="all-trades-in-channel"
            output-channel="cancel-trades-out-channel"
            ref="cancelTradeFilter"
            throw-exception-on-rejection="true">
</int:filter>