ru.yandex.clickhouse.util.LogProxy Maven / Gradle / Ivy
package ru.yandex.clickhouse.util;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.lang.reflect.InvocationHandler;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.lang.reflect.Proxy;
import java.util.Arrays;
public class LogProxy implements InvocationHandler {
private static final Logger log = LoggerFactory.getLogger(LogProxy.class);
private final T object;
private final Class clazz;
public static T wrap(Class interfaceClass, T object) {
if (log.isTraceEnabled()) {
LogProxy proxy = new LogProxy(interfaceClass, object);
return proxy.getProxy();
}
return object;
}
private LogProxy(Class interfaceClass, T object) {
if (!interfaceClass.isInterface()) {
throw new IllegalStateException("Class " + interfaceClass.getName() + " is not an interface");
}
clazz = interfaceClass;
this.object = object;
}
@SuppressWarnings("unchecked")
public T getProxy() {
//xnoinspection x
// unchecked
return (T) Proxy.newProxyInstance(clazz.getClassLoader(), new Class[]{clazz}, this);
}
@Override
public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
String msg =
"Call class: " + object.getClass().getName() +
"\nMethod: " + method.getName() +
"\nObject: " + object +
"\nArgs: " + Arrays.toString(args) +
"\nInvoke result: ";
try {
final Object invokeResult = method.invoke(object, args);
msg += invokeResult;
return invokeResult;
} catch (InvocationTargetException e) {
msg += e.getMessage();
throw e.getTargetException();
} finally {
msg = "==== ClickHouse JDBC trace begin ====\n" + msg + "\n==== ClickHouse JDBC trace end ====";
log.trace(msg);
}
}
}