Create a custom Common Base Event content handler or template
to automate configuration or values for specific events.
Before you begin
A content handler is an object that automatically
sets the property values of each event based on any arbitrary policies
that you want to use.
The following content handler classes
were added to WebSphere® Application Server to facilitate
the use of the Common Base Event infrastructure:
Class name |
Description |
WsContentHandlerImpl |
This provides an implementation of org.eclipse.hyades.logging.events.cbe.ContentHandler
specifically for use in the WebSphere Application Server
environment. This content handler completes Common Base Events using
information from the WebSphere Application Server
runtime, and it uses the same content handler as is used internally
by the WebSphere Application Server when completing
Common Base Events for logging. |
WsTemplateContentHandlerImpl |
This provides the same function as WsContentHandlerImpl,
but it extends the org.eclipse.hyades.logging.events.cbe.impl.TemplateContentHandlerImpl
class to enable the use of a Common Base Event template. Template
content takes precedence in cases where the template data specifies
values for the same Common Base Event fields as does the WsContentHandlerImpl. |
About this task
In some situations, you might want some event property data
set automatically for every event that you create. This automation
is a way to fill in certain standard values that do not change, such
as the application name, or to set some properties based on information
that is available from the runtime environment, like creation time
or thread information. You can set property data automatically by
creating a content handler.
Procedure
- Use the following code sample to implement the CustomContentHandler
class:
public class CustomContentHandler extends WsContentHandlerImpl {
public CustomContentHandler() {
super();
// TODO Custom initialization code goes here
}
public void completeEvent(CommonBaseEvent cbe) throws CompletionException {
// following code will add WAS content to the Content Base Event
super.completeEvent(cbe);
// TODO Custom content can be added to the Content Base Event here
}
}
- The following shows how to implement the CustomTemplateContentHandler
class:
public class CustomTemplateContentHandler extends WsTemplateContentHandlerImpl {
public CustomTemplateContentHandler() {
super();
// TODO Custom initialization code goes here
}
public void completeEvent(CommonBaseEvent cbe) throws CompletionException {
// following code will add WAS content to the Content Base Event
super.completeEvent(cbe);
// TODO Custom content can be added to the Content Base Event here
}
}
Results
You now have a content handler or a custom content handler
template based on the settings that you specified.