| /* |
| * Copyright 2014-present Facebook, Inc. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); you may |
| * not use this file except in compliance with the License. You may obtain |
| * a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
| * License for the specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| package com.facebook.buck.cli; |
| |
| import com.facebook.buck.log.ConsoleHandler; |
| import com.google.common.base.Optional; |
| import com.google.common.collect.ImmutableList; |
| |
| import java.util.logging.Handler; |
| import java.util.logging.Logger; |
| |
| public class JavaUtilLogHandlers { |
| // Utility class. Do not instantiate. |
| private JavaUtilLogHandlers() { } |
| |
| public static Optional<ConsoleHandler> getConsoleHandler() { |
| // We can't stop someone from mutating this array, but we can minimize the chance. |
| ImmutableList<Handler> handlers = ImmutableList.copyOf(Logger.getLogger("").getHandlers()); |
| for (Handler handler : handlers) { |
| if (handler instanceof ConsoleHandler) { |
| return Optional.of((ConsoleHandler) handler); |
| } |
| } |
| return Optional.absent(); |
| } |
| } |