| /* |
| * Copyright (C) 2007 Google 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.google.common.io; |
| |
| import java.io.Flushable; |
| import java.io.IOException; |
| import java.util.logging.Level; |
| import java.util.logging.Logger; |
| |
| /** |
| * Utility methods for working with {@link Flushable} objects. |
| * |
| * @author Michael Lancaster |
| * @since 2009.09.15 <b>tentative</b> |
| */ |
| public final class Flushables { |
| private static final Logger logger |
| = Logger.getLogger(Flushables.class.getName()); |
| |
| private Flushables() {} |
| |
| /** |
| * Flush a {@link Flushable}, with control over whether an |
| * {@code IOException} may be thrown. |
| * |
| * <p>If {@code swallowIOException} is true, then we don't rethrow |
| * {@code IOException}, but merely log it. |
| * |
| * @param flushable the {@code Flushable} object to be flushed. |
| * @param swallowIOException if true, don't propagate IO exceptions |
| * thrown by the {@code flush} method |
| * @throws IOException if {@code swallowIOException} is false and |
| * {@link Flushable#flush} throws an {@code IOException}. |
| * @see Closeables#close |
| */ |
| public static void flush(Flushable flushable, boolean swallowIOException) |
| throws IOException { |
| try { |
| flushable.flush(); |
| } catch (IOException e) { |
| logger.log(Level.WARNING, |
| "IOException thrown while flushing Flushable.", e); |
| if (!swallowIOException) { |
| throw e; |
| } |
| } |
| } |
| |
| /** |
| * Equivalent to calling {@code flush(flushable, true)}, but with no |
| * {@code IOException} in the signature. |
| * |
| * @param flushable the {@code Flushable} object to be flushed. |
| */ |
| public static void flushQuietly(Flushable flushable) { |
| try { |
| flush(flushable, true); |
| } catch (IOException e) { |
| logger.log(Level.SEVERE, "IOException should not have been thrown.", e); |
| } |
| } |
| } |