Example of Defining an Event Provider by Writing a Java Class

Example 5–1 Defining an Event Provider by Writing a Java Class

This example shows the definition of the TxManager class. This class defines events for the start and end of transactions that are performed by a transaction manager.

The methods in this class are as follows:

onTxBegin

This method sends an event to indicate the start of a transaction. The name of the event type that is associated with this method is begin. A parameter that is named txId is passed to the method.

onCompletion

This method sends an event to indicate the end of a transaction. The name of the event type that is associated with this method is end. A parameter that is named outcome is passed to the method.

import org.glassfish.external.probe.provider.annotations.Probe;
import org.glassfish.external.probe.provider.annotations.ProbeParam;
import org.glassfish.external.probe.provider.annotations.ProbeProvider;
@ProbeProvider(moduleProviderName="examplecomponent", 
moduleName="transaction", probeProviderName="manager")
public class TxManager {
    
    @Probe("begin")
    public void onTxBegin(
        @ProbeParam("{txId}") String txId
    ){}

    @Probe ("end")
    public void onCompletion(
        @ProbeParam("{outcome}") boolean outcome
    ){}
 }