| // |
| // ======================================================================== |
| // Copyright (c) 1995-2017 Mort Bay Consulting Pty. Ltd. |
| // ------------------------------------------------------------------------ |
| // All rights reserved. This program and the accompanying materials |
| // are made available under the terms of the Eclipse Public License v1.0 |
| // and Apache License v2.0 which accompanies this distribution. |
| // |
| // The Eclipse Public License is available at |
| // http://www.eclipse.org/legal/epl-v10.html |
| // |
| // The Apache License v2.0 is available at |
| // http://www.opensource.org/licenses/apache2.0.php |
| // |
| // You may elect to redistribute this code under either of these licenses. |
| // ======================================================================== |
| // |
| |
| package org.eclipse.jetty.util.log; |
| |
| /** |
| * A try-with-resources compatible layer for {@link StdErrLog#setHideStacks(boolean) hiding stacktraces} within the scope of the <code>try</code> block when |
| * logging with {@link StdErrLog} implementation. |
| * <p> |
| * Use of other logging implementation cause no effect when using this class |
| * <p> |
| * Example: |
| * |
| * <pre> |
| * try (StacklessLogging scope = new StacklessLogging(EventDriver.class,Noisy.class)) |
| * { |
| * doActionThatCausesStackTraces(); |
| * } |
| * </pre> |
| */ |
| public class StacklessLogging implements AutoCloseable |
| { |
| private final Class<?> clazzes[]; |
| |
| public StacklessLogging(Class<?>... classesToSquelch) |
| { |
| this.clazzes = classesToSquelch; |
| hideStacks(true); |
| } |
| |
| @Override |
| public void close() throws Exception |
| { |
| hideStacks(false); |
| } |
| |
| private void hideStacks(boolean hide) |
| { |
| for (Class<?> clazz : clazzes) |
| { |
| Logger log = Log.getLogger(clazz); |
| if (log == null) |
| { |
| // not interested in classes without loggers |
| continue; |
| } |
| if (log instanceof StdErrLog) |
| { |
| // only operate on loggers that are of type StdErrLog |
| ((StdErrLog)log).setHideStacks(hide); |
| } |
| } |
| } |
| } |