Source Code for Apache Log4j Core Implementation

Apache Log4j Core Implementation provides the functional components of the logging system. Users are free to create their own plugins and include them in the logging configuration. Apache Log4j Core is a required module to use Apache Log4j.

Bytecode (Java 8) for Apache Log4j Core Implementation is provided in a separate JAR file like log4j-core-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 Core Implementation 2.14.1 below.

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org/apache/logging/log4j/core/appender/rolling/SizeBasedTriggeringPolicy.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.core.appender.rolling;

import org.apache.logging.log4j.core.Core;
import org.apache.logging.log4j.core.LogEvent;
import org.apache.logging.log4j.core.config.plugins.Plugin;
import org.apache.logging.log4j.core.config.plugins.PluginAttribute;
import org.apache.logging.log4j.core.config.plugins.PluginFactory;

/**
 *
 */
@Plugin(name = "SizeBasedTriggeringPolicy", category = Core.CATEGORY_NAME, printObject = true)
public class SizeBasedTriggeringPolicy extends AbstractTriggeringPolicy {

    /**
     * Rollover threshold size in bytes.
     */
    private static final long MAX_FILE_SIZE = 10 * 1024 * 1024; // let 10 MB the default max size

    private final long maxFileSize;

    private RollingFileManager manager;

    /**
     * Constructs a new instance.
     */
    protected SizeBasedTriggeringPolicy() {
        this.maxFileSize = MAX_FILE_SIZE;
    }

    /**
     * Constructs a new instance.
     *
     * @param maxFileSize rollover threshold size in bytes.
     */
    protected SizeBasedTriggeringPolicy(final long maxFileSize) {
        this.maxFileSize = maxFileSize;
    }

    public long getMaxFileSize() {
        return maxFileSize;
    }

    /**
     * Initialize the TriggeringPolicy.
     * @param aManager The RollingFileManager.
     */
    @Override
    public void initialize(final RollingFileManager aManager) {
        this.manager = aManager;
    }


    /**
     * Returns true if a rollover should occur.
     * @param event   A reference to the currently event.
     * @return true if a rollover should take place, false otherwise.
     */
    @Override
    public boolean isTriggeringEvent(final LogEvent event) {
        final boolean triggered = manager.getFileSize() > maxFileSize;
        if (triggered) {
            manager.getPatternProcessor().updateTime();
        }
        return triggered;
    }

    @Override
    public String toString() {
        return "SizeBasedTriggeringPolicy(size=" + maxFileSize + ')';
    }

    /**
     * Create a SizeBasedTriggeringPolicy.
     * @param size The size of the file before rollover is required.
     * @return A SizeBasedTriggeringPolicy.
     */
    @PluginFactory
    public static SizeBasedTriggeringPolicy createPolicy(@PluginAttribute("size") final String size) {

        final long maxSize = size == null ? MAX_FILE_SIZE : FileSize.parse(size, MAX_FILE_SIZE);
        return new SizeBasedTriggeringPolicy(maxSize);
    }

}

org/apache/logging/log4j/core/appender/rolling/SizeBasedTriggeringPolicy.java

 

Or download all of them as a single archive file:

File name: log4j-core-2.14.1-sources.jar
File size: 1281358 bytes
Release date: 2021-03-06
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