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Concepts

In order for sent/received messages to be logged in an IPF implementation, developers must implement a suitable message logger. There is no default logger (though out-of-the-box implementations are available that log to Mongo and Kafka) as every client has different requirements ; some may wish to use a corporate central log, some may wish to use ODS or maybe even a mix depending on the message in question. This section of the documentation contains technical information for developers that allows them to implement message logging for an IPF solution.

A Message Logger in IPF is any class that implements this simple functional interface:

public interface MessageLogger {
    void logMessage(MessageLogEntry var1);
}

A common requirement is to log every message sent to or from a flow and an implementation of the MessageLogger can be provided for that purpose. We provide a logging implementation to a Connector for example.

Connectors are a very common place where a logger is used, and the Connector framework offers the additional option to enrich message data by providing an implementation of the MessageLogEntryEnrichment functional interface:

public interface MessageLogEntryEnricher<T> {
    void enrich(ConnectorMessage<T> connectorMessage, MessageLogEntry messageLogEntry);
}

(see the Connector Message Logging docs)

Before deciding to use a specific logger it’s worth considering where the message and other data logging fits into your overall strategy, especially if implementing ODS. See the Using ODS page for more on this.