| Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
| LogFactory |
|
| 1.5;1.5 |
| 1 | /* | |
| 2 | * #%L | |
| 3 | * LogFactory.java - mongodb-async-driver - Allanbank Consulting, Inc. | |
| 4 | * %% | |
| 5 | * Copyright (C) 2011 - 2014 Allanbank Consulting, Inc. | |
| 6 | * %% | |
| 7 | * Licensed under the Apache License, Version 2.0 (the "License"); | |
| 8 | * you may not use this file except in compliance with the License. | |
| 9 | * You may obtain a copy of the License at | |
| 10 | * | |
| 11 | * http://www.apache.org/licenses/LICENSE-2.0 | |
| 12 | * | |
| 13 | * Unless required by applicable law or agreed to in writing, software | |
| 14 | * distributed under the License is distributed on an "AS IS" BASIS, | |
| 15 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
| 16 | * See the License for the specific language governing permissions and | |
| 17 | * limitations under the License. | |
| 18 | * #L% | |
| 19 | */ | |
| 20 | package com.allanbank.mongodb.util.log; | |
| 21 | ||
| 22 | /** | |
| 23 | * LogFactory supports the creation of the Log instances. | |
| 24 | * | |
| 25 | * @api.no This class is <b>NOT</b> part of the drivers API. This class may be | |
| 26 | * mutated in incompatible ways between any two releases of the driver. | |
| 27 | * @copyright 2014, Allanbank Consulting, Inc., All Rights Reserved | |
| 28 | */ | |
| 29 | public abstract class LogFactory { | |
| 30 | ||
| 31 | /** The {@link LogFactory} instance. */ | |
| 32 | private volatile static LogFactory ourInstance; | |
| 33 | ||
| 34 | /** | |
| 35 | * Creates a {@link Log} instance for the provided class. | |
| 36 | * | |
| 37 | * @param clazz | |
| 38 | * The name of the class to create a log instance for. | |
| 39 | * @return The {@link Log} instance for the class. | |
| 40 | */ | |
| 41 | public static Log getLog(final Class<?> clazz) { | |
| 42 | 226 | LogFactory factory = ourInstance; |
| 43 | 226 | if (factory == null) { |
| 44 | try { | |
| 45 | 4 | factory = new Slf4jLogFactory(); |
| 46 | } | |
| 47 | 2 | catch (final RuntimeException e) { |
| 48 | 2 | factory = new JulLogFactory(); |
| 49 | 2 | } |
| 50 | 4 | ourInstance = factory; |
| 51 | } | |
| 52 | 226 | return factory.doGetLog(clazz); |
| 53 | } | |
| 54 | ||
| 55 | /** | |
| 56 | * Resets the logger factory being used. Provided for testing. | |
| 57 | */ | |
| 58 | /* package */static void reset() { | |
| 59 | 58 | ourInstance = null; |
| 60 | 58 | } |
| 61 | ||
| 62 | /** | |
| 63 | * Creates a new {@link LogFactory}. | |
| 64 | */ | |
| 65 | protected LogFactory() { | |
| 66 | 45 | super(); |
| 67 | 45 | } |
| 68 | ||
| 69 | /** | |
| 70 | * Delegate method for the instantiated {@link LogFactory}. | |
| 71 | * | |
| 72 | * @param clazz | |
| 73 | * The name of the class to create a log instance for. | |
| 74 | * @return The {@link Log} instance for the class. | |
| 75 | */ | |
| 76 | protected abstract Log doGetLog(Class<?> clazz); | |
| 77 | } |