JarCastingFlexible Appender for extending Log4j functionality
Mix the four separated component of FlexibleAppender to create an appender that makes you happy!
The components:
- Enableable (filter that runs when instantiating an appender)
- LogFilter (filter that runs for every log event)
- LogLineBuilder (constructs a loggable line)
- LogLineOutput (writes the log line into a stream/file/anything)
Maven import from central repository:
<dependencies>
<dependency>
<groupId>com.janosgats.logging</groupId>
<artifactId>flexible-appender</artifactId>
</dependency>
</dependencies>
Factoring common appenders
To quickly create an appender for a common use case, you can use the CommonAppenderFactory class to spare some code in your repository:
@Plugin(name = "LocalDevConsoleAppender", category = "Core", elementType = "appender", printObject = true)
public class LocalDevConsoleAppender extends FlexibleAppender {
public LocalDevConsoleAppender(String name, Filter filter, Layout<? extends Serializable> layout, boolean ignoreExceptions, Property[] properties) {
super(name, filter, layout, ignoreExceptions, properties);
}
@PluginFactory
public static LocalDevConsoleAppender createAppender(
@PluginAttribute("name") String name,
@PluginElement("Layout") Layout<? extends Serializable> layout,
@PluginElement("Filter") final Filter filter,
@PluginAttribute("otherAttribute") String otherAttribute) throws NoSuchMethodException, IllegalAccessException, InvocationTargetException, InstantiationException {
return (LocalDevConsoleAppender) new CommonAppenderFactory<>(LocalDevConsoleAppender.class)
.usePluginFactoryParameters(name, layout, filter, null)
.createForLocalDevConsole("LOGGING_ENABLE_LOCALDEV_CONSOLE_APPENDER","LOGGING_ENABLE_LOCALDEV_CONSOLE_APPENDER");
}
}