| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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 org.apache.logging.log4j.core.config; |
| |
| import org.apache.logging.log4j.core.util.Loader; |
| import org.apache.logging.log4j.status.StatusLogger; |
| import org.apache.logging.log4j.util.PropertiesUtil; |
| |
| /** |
| * Factory for ReliabilityStrategies. |
| */ |
| public final class ReliabilityStrategyFactory { |
| private ReliabilityStrategyFactory() { |
| } |
| |
| /** |
| * Returns a new {@code ReliabilityStrategy} instance based on the value of system property |
| * {@code log4j.ReliabilityStrategy}. If not value was specified this method returns a new |
| * {@code AwaitUnconditionallyReliabilityStrategy}. |
| * <p> |
| * Valid values for this system property are {@code "AwaitUnconditionally"} (use |
| * {@code AwaitUnconditionallyReliabilityStrategy}), {@code "Locking"} (use {@code LockingReliabilityStrategy}) and |
| * {@code "AwaitCompletion"} (use the default {@code AwaitCompletionReliabilityStrategy}). |
| * <p> |
| * Users may also use this system property to specify the fully qualified class name of a class that implements the |
| * {@code ReliabilityStrategy} and has a constructor that accepts a single {@code LoggerConfig} argument. |
| * |
| * @param loggerConfig the LoggerConfig the resulting {@code ReliabilityStrategy} is associated with |
| * @return a ReliabilityStrategy that helps the specified LoggerConfig to log events reliably during or after a |
| * configuration change |
| */ |
| public static ReliabilityStrategy getReliabilityStrategy(final LoggerConfig loggerConfig) { |
| |
| final String strategy = PropertiesUtil.getProperties().getStringProperty("log4j.ReliabilityStrategy", |
| "AwaitCompletion"); |
| if ("AwaitCompletion".equals(strategy)) { |
| return new AwaitCompletionReliabilityStrategy(loggerConfig); |
| } |
| if ("AwaitUnconditionally".equals(strategy)) { |
| return new AwaitUnconditionallyReliabilityStrategy(loggerConfig); |
| } |
| if ("Locking".equals(strategy)) { |
| return new LockingReliabilityStrategy(loggerConfig); |
| } |
| try { |
| final Class<? extends ReliabilityStrategy> cls = Loader.loadClass(strategy).asSubclass( |
| ReliabilityStrategy.class); |
| return cls.getConstructor(LoggerConfig.class).newInstance(loggerConfig); |
| } catch (final Exception dynamicFailed) { |
| StatusLogger.getLogger().warn( |
| "Could not create ReliabilityStrategy for '{}', using default AwaitCompletionReliabilityStrategy: {}", strategy, dynamicFailed); |
| return new AwaitCompletionReliabilityStrategy(loggerConfig); |
| } |
| } |
| } |