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Source Code for Apache Log4j API
Apache Log4j API
provides the interface that applications should code to and provides the adapter
components required for implementers to create a logging implementation.
Apache Log4j API is a required module to use Apache Log4j.
Bytecode (Java 8) for Apache Log4j API is provided in a separate JAR file like log4j-api-2.14.1.jar.
Source Code files for Apache Log4j API are provided in both binary packge like apache-log4j-2.14.1-bin.zip and source package like apache-log4j-2.14.1-src.zip. You can download them at Apache Log4j Website.
You can also browse Source Code files for Apache Log4j API 2.14.1 below.
✍: FYIcenter.com
⏎ org/apache/logging/log4j/util/SystemPropertiesPropertySource.java
/* * 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.util; import java.util.Objects; import java.util.Properties; /** * PropertySource backed by the current system properties. Other than having a * higher priority over normal properties, this follows the same rules as * {@link PropertiesPropertySource}. * * @since 2.10.0 */ public class SystemPropertiesPropertySource implements PropertySource { private static final int DEFAULT_PRIORITY = 100; private static final String PREFIX = "log4j2."; @Override public int getPriority() { return DEFAULT_PRIORITY; } @Override public void forEach(final BiConsumer<String, String> action) { Properties properties; try { properties = System.getProperties(); } catch (final SecurityException e) { // (1) There is no status logger. // (2) LowLevelLogUtil also consults system properties ("line.separator") to // open a BufferedWriter, so this may fail as well. Just having a hard reference // in this code to LowLevelLogUtil would cause a problem. // (3) We could log to System.err (nah) or just be quiet as we do now. return; } // Lock properties only long enough to get a thread-safe SAFE snapshot of its // current keys, an array. final Object[] keySet; synchronized (properties) { keySet = properties.keySet().toArray(); } // Then traverse for an unknown amount of time. // Some keys may now be absent, in which case, the value is null. for (final Object key : keySet) { final String keyStr = Objects.toString(key, null); action.accept(keyStr, properties.getProperty(keyStr)); } } @Override public CharSequence getNormalForm(final Iterable<? extends CharSequence> tokens) { return PREFIX + Util.joinAsCamelCase(tokens); } }
⏎ org/apache/logging/log4j/util/SystemPropertiesPropertySource.java
Or download all of them as a single archive file:
File name: log4j-api-2.14.1-sources.jar File size: 264773 bytes Release date: 2021-03-06 Download
⇒ Source Code for Apache Log4j Core Implementation
⇐ Downloading Apache Log4j Binary Package
2015-11-17, 38452👍, 0💬
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