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.

⏎ org/apache/logging/log4j/core/appender/rolling/action/AbstractAction.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.action;

import java.io.IOException;

import org.apache.logging.log4j.Logger;
import org.apache.logging.log4j.status.StatusLogger;


/**
 * Abstract base class for implementations of Action.
 */
public abstract class AbstractAction implements Action {

    /**
     * Allows subclasses access to the status logger without creating another instance.
     */
    protected static final Logger LOGGER = StatusLogger.getLogger();
    /**
     * Is action complete.
     */
    private boolean complete = false;

    /**
     * Is action interrupted.
     */
    private boolean interrupted = false;

    /**
     * Constructor.
     */
    protected AbstractAction() {
    }

    /**
     * Performs action.
     *
     * @return true if successful.
     * @throws IOException if IO error.
     */
    @Override
    public abstract boolean execute() throws IOException;

    /**
     * {@inheritDoc}
     */
    @Override
    public synchronized void run() {
        if (!interrupted) {
            try {
                execute();
            } catch (final RuntimeException | IOException ex) {
                reportException(ex);
            } catch (final Error e) {
                // reportException takes Exception, widening to Throwable would break custom implementations
                // so we wrap Errors in RuntimeException for handling.
                reportException(new RuntimeException(e));
            }

            complete = true;
            interrupted = true;
        }
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public synchronized void close() {
        interrupted = true;
    }

    /**
     * Tests if the action is complete.
     *
     * @return true if action is complete.
     */
    @Override
    public boolean isComplete() {
        return complete;
    }

    public boolean isInterrupted() {
        return interrupted;
    }

    /**
     * Captures exception.
     *
     * @param ex exception.
     */
    protected void reportException(final Exception ex) {
        LOGGER.warn("Exception reported by action '{}'", getClass(), ex);
    }

}

⏎ org/apache/logging/log4j/core/appender/rolling/action/AbstractAction.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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