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/net/SocketAddress.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.net;

import java.net.InetAddress;
import java.net.InetSocketAddress;

import org.apache.logging.log4j.core.config.Node;
import org.apache.logging.log4j.core.config.plugins.Plugin;
import org.apache.logging.log4j.core.config.plugins.PluginBuilderAttribute;
import org.apache.logging.log4j.core.config.plugins.PluginBuilderFactory;
import org.apache.logging.log4j.core.config.plugins.validation.constraints.ValidHost;
import org.apache.logging.log4j.core.config.plugins.validation.constraints.ValidPort;

/**
 * Plugin to hold a hostname and port (socket address).
 *
 * @since 2.8
 */
@Plugin(name = "SocketAddress", category = Node.CATEGORY, printObject = true)
public class SocketAddress {

    /**
     * Creates a SocketAddress corresponding to {@code localhost:0}.
     *
     * @return a SocketAddress for {@code localhost:0}
     */
    public static SocketAddress getLoopback() {
        return new SocketAddress(InetAddress.getLoopbackAddress(), 0);
    }

    // never null
    private final InetSocketAddress socketAddress;

    private SocketAddress(final InetAddress host, final int port) {
        this.socketAddress = new InetSocketAddress(host, port);
    }

    public InetSocketAddress getSocketAddress() {
        return socketAddress;
    }

    public int getPort() {
        return socketAddress.getPort();
    }

    public InetAddress getAddress() {
        return socketAddress.getAddress();
    }

    public String getHostName() {
        return socketAddress.getHostName();
    }

    @PluginBuilderFactory
    public static Builder newBuilder() {
        return new Builder();
    }

    public static class Builder implements org.apache.logging.log4j.core.util.Builder<SocketAddress> {

        @PluginBuilderAttribute
        @ValidHost
        private InetAddress host;

        @PluginBuilderAttribute
        @ValidPort
        private int port;

        public Builder setHost(final InetAddress host) {
            this.host = host;
            return this;
        }

        public Builder setPort(final int port) {
            this.port = port;
            return this;
        }

        @Override
        public SocketAddress build() {
            return new SocketAddress(host, port);
        }
    }

    @Override
    public String toString() {
        return socketAddress.toString();
    }

}

⏎ org/apache/logging/log4j/core/net/SocketAddress.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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