Open the synapse.properties file in the SYNAPSE_HOME/repository/conf directory
using a text editor and uncomment the line which defines the simple logging
Synapse observer.
synapse.observers=samples.userguide.SimpleLoggingObserver
Open the log4j.properties file in the SYNAPSE_HOME/lib directory and
uncomment the line which sets the INFO log level to the samples.userguide
package.
log4j.category.samples.userguide=INFO
Start Synapse using any of the sample configurations. The SimpleLoggingObserver
will capture events that occur while constructing the Synapse configuration
and log them on the console as follows.
2009-08-06 14:30:24,578 [-] [main] INFO SimpleLoggingObserver Simple logging observer initialized...Capturing Synapse events...
2009-08-06 14:30:24,604 [-] [main] INFO SimpleLoggingObserver Endpoint : a3 was added to the Synapse configuration successfully
2009-08-06 14:30:24,605 [-] [main] INFO SimpleLoggingObserver Endpoint : a2 was added to the Synapse configuration successfully
2009-08-06 14:30:24,606 [-] [main] INFO SimpleLoggingObserver Endpoint : null was added to the Synapse configuration successfully
2009-08-06 14:30:24,611 [-] [main] INFO SimpleLoggingObserver Local entry : a1 was added to the Synapse configuration successfully
2009-08-06 14:30:24,649 [-] [main] INFO SimpleLoggingObserver Proxy service : StockQuoteProxy2 was added to the Synapse configuration successfully
2009-08-06 14:30:24,661 [-] [main] INFO SimpleLoggingObserver Proxy service : StockQuoteProxy1 was added to the Synapse configuration successfully
2009-08-06 14:30:24,664 [-] [main] INFO SimpleLoggingObserver Sequence : main was added to the Synapse configuration successfully
2009-08-06 14:30:24,701 [-] [main] INFO SimpleLoggingObserver Sequence : fault was added to the Synapse configuration successfully
The SimpleLoggingObserver is implemented as follows. It does not override any of the event handler implementations
in the AbstractSynapseObserver class. The AbstractSynapseObserver logs all the received events by default.
package samples.userguide;
import org.apache.synapse.config.AbstractSynapseObserver;
public class SimpleLoggingObserver extends AbstractSynapseObserver {
public SimpleLoggingObserver() {
super();
log.info("Simple logging observer initialized...Capturing Synapse events...");
}
}