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/util/Source.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.util;

import java.io.File;
import java.net.URI;
import java.util.Objects;

import org.apache.logging.log4j.core.config.ConfigurationSource;

/**
 * Represents the source for the logging configuration.
 */
public class Source {

    /**
     * Captures a URI or File.
     */

    private final File file;
    private final URI uri;
    private final String location;

    /**
     * Constructs a Source from a ConfigurationSource.
     * @param source The ConfigurationSource.
     */
    public Source(ConfigurationSource source) {
        this.file = source.getFile();
        this.uri = source.getURI();
        this.location = source.getLocation();
    }

    /**
     * Constructs a new {@code Source} with the specified file.
     * file.
     *
     * @param file the file where the input stream originated
     */
    public Source(final File file) {
        this.file = Objects.requireNonNull(file, "file is null");
        this.location = file.getAbsolutePath();
        this.uri = null;
    }

    /**
     * Constructs a new {@code Source} from the specified URI.
     *
     * @param uri the URL where the input stream originated
     */
    public Source(final URI uri, final long lastModified) {
        this.uri = Objects.requireNonNull(uri, "URI is null");
        this.location = uri.toString();
        this.file = null;
    }

    /**
     * Returns the file configuration source, or {@code null} if this configuration source is based on an URL or has
     * neither a file nor an URL.
     *
     * @return the configuration source file, or {@code null}
     */
    public File getFile() {
        return file;
    }

    /**
     * Returns the configuration source URL, or {@code null} if this configuration source is based on a file or has
     * neither a file nor an URL.
     *
     * @return the configuration source URL, or {@code null}
     */
    public URI getURI() {
        return uri;
    }

    /**
     * Returns a string describing the configuration source file or URL, or {@code null} if this configuration source
     * has neither a file nor an URL.
     *
     * @return a string describing the configuration source file or URL, or {@code null}
     */
    public String getLocation() {
        return location;
    }

    @Override
    public String toString() {
        return location;
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) {
            return true;
        }
        if (!(o instanceof Source)) {
            return false;
        }
        Source source = (Source) o;
        return Objects.equals(location, source.location);
    }

    @Override
    public int hashCode() {
        return 31 + Objects.hashCode(location);
    }
}

⏎ org/apache/logging/log4j/core/util/Source.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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