package io.vertx.core.logging;
import io.vertx.core.spi.logging.LogDelegate;
import io.vertx.core.spi.logging.LogDelegateFactory;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
public class LoggerFactory {
public static final String LOGGER_DELEGATE_FACTORY_CLASS_NAME = "vertx.logger-delegate-factory-class-name";
private static volatile LogDelegateFactory delegateFactory;
private static final ConcurrentMap<String, Logger> loggers = new ConcurrentHashMap<>();
static {
initialise();
}
public static synchronized void initialise() {
LogDelegateFactory delegateFactory;
String className = JULLogDelegateFactory.class.getName();
try {
className = System.getProperty(LOGGER_DELEGATE_FACTORY_CLASS_NAME);
} catch (Exception e) {
}
if (className != null) {
ClassLoader loader = Thread.currentThread().getContextClassLoader();
try {
Class<?> clz = loader.loadClass(className);
delegateFactory = (LogDelegateFactory) clz.newInstance();
} catch (Exception e) {
throw new IllegalArgumentException("Error instantiating transformer class \"" + className + "\"", e);
}
} else {
delegateFactory = new JULLogDelegateFactory();
}
LoggerFactory.delegateFactory = delegateFactory;
}
public static Logger getLogger(final Class<?> clazz) {
String name = clazz.isAnonymousClass() ?
clazz.getEnclosingClass().getCanonicalName() :
clazz.getCanonicalName();
return getLogger(name);
}
public static Logger getLogger(final String name) {
Logger logger = loggers.get(name);
if (logger == null) {
LogDelegate delegate = delegateFactory.createDelegate(name);
logger = new Logger(delegate);
Logger oldLogger = loggers.putIfAbsent(name, logger);
if (oldLogger != null) {
logger = oldLogger;
}
}
return logger;
}
public static void removeLogger(String name) {
loggers.remove(name);
}
}