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.