| 1 | /** |
| 2 | * Licensed to jclouds, Inc. (jclouds) under one or more |
| 3 | * contributor license agreements. See the NOTICE file |
| 4 | * distributed with this work for additional information |
| 5 | * regarding copyright ownership. jclouds licenses this file |
| 6 | * to you under the Apache License, Version 2.0 (the |
| 7 | * "License"); you may not use this file except in compliance |
| 8 | * with the License. You may obtain a copy of the License at |
| 9 | * |
| 10 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 11 | * |
| 12 | * Unless required by applicable law or agreed to in writing, |
| 13 | * software distributed under the License is distributed on an |
| 14 | * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| 15 | * KIND, either express or implied. See the License for the |
| 16 | * specific language governing permissions and limitations |
| 17 | * under the License. |
| 18 | */ |
| 19 | package org.jclouds.logging; |
| 20 | |
| 21 | import com.google.common.base.Throwables; |
| 22 | |
| 23 | /** |
| 24 | * <tt>Logger</tt> that doesn't do anything. |
| 25 | * <p /> |
| 26 | * Useful to get baseline performance unaffected by logging. |
| 27 | * |
| 28 | * @author Adrian Cole |
| 29 | * |
| 30 | */ |
| 31 | public class NullLogger implements Logger { |
| 32 | |
| 33 | public void debug(String message, Object... args) { |
| 34 | |
| 35 | } |
| 36 | |
| 37 | public void error(String message, Object... args) { |
| 38 | System.err.printf(message + "%n", args); |
| 39 | } |
| 40 | |
| 41 | public void error(Throwable throwable, String message, Object... args) { |
| 42 | System.err.printf(message, args); |
| 43 | System.err.printf("%n%s", Throwables.getStackTraceAsString(throwable)); |
| 44 | } |
| 45 | |
| 46 | public String getCategory() { |
| 47 | |
| 48 | return null; |
| 49 | } |
| 50 | |
| 51 | public void info(String message, Object... args) { |
| 52 | |
| 53 | } |
| 54 | |
| 55 | public boolean isDebugEnabled() { |
| 56 | |
| 57 | return false; |
| 58 | } |
| 59 | |
| 60 | public boolean isErrorEnabled() { |
| 61 | |
| 62 | return true; |
| 63 | } |
| 64 | |
| 65 | public boolean isInfoEnabled() { |
| 66 | |
| 67 | return false; |
| 68 | } |
| 69 | |
| 70 | public boolean isTraceEnabled() { |
| 71 | |
| 72 | return false; |
| 73 | } |
| 74 | |
| 75 | public boolean isWarnEnabled() { |
| 76 | |
| 77 | return false; |
| 78 | } |
| 79 | |
| 80 | public void trace(String message, Object... args) { |
| 81 | |
| 82 | } |
| 83 | |
| 84 | public void warn(String message, Object... args) { |
| 85 | |
| 86 | } |
| 87 | |
| 88 | public void warn(Throwable throwable, String message, Object... args) { |
| 89 | |
| 90 | } |
| 91 | } |