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/jmx/AsyncAppenderAdminMBean.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.jmx;

/**
 * The MBean interface for monitoring and managing an {@code AsyncAppender}.
 */
public interface AsyncAppenderAdminMBean {
    /**
     * ObjectName pattern ({@value} ) for AsyncAppenderAdmin MBeans. This
     * pattern contains two variables, where the first is the name of the
     * context, the second is the name of the instrumented appender.
     * <p>
     * You can find all registered AsyncAppenderAdmin MBeans like this:
     * </p>
     *
     * <pre>
     * MBeanServer mbs = ManagementFactory.getPlatformMBeanServer();
     * String pattern = String.format(AsyncAppenderAdminMBean.PATTERN, &quot;*&quot;, &quot;*&quot;);
     * Set&lt;ObjectName&gt; appenderNames = mbs.queryNames(new ObjectName(pattern), null);
     * </pre>
     * <p>
     * Some characters are not allowed in ObjectNames. The logger context name
     * and appender name may be quoted. When AsyncAppenderAdmin MBeans are
     * registered, their ObjectNames are created using this pattern as follows:
     * </p>
     *
     * <pre>
     * String ctxName = Server.escape(loggerContext.getName());
     * String appenderName = Server.escape(appender.getName());
     * String name = String.format(PATTERN, ctxName, appenderName);
     * ObjectName objectName = new ObjectName(name);
     * </pre>
     *
     * @see Server#escape(String)
     */
    String PATTERN = Server.DOMAIN + ":type=%s,component=AsyncAppenders,name=%s";

    /**
     * Returns the name of the instrumented {@code AsyncAppender}.
     *
     * @return the name of the AsyncAppender
     */
    String getName();

    /**
     * Returns the result of calling {@code toString} on the {@code Layout}
     * object of the instrumented {@code AsyncAppender}.
     *
     * @return the {@code Layout} of the instrumented {@code AsyncAppender} as a
     *         string
     */
    String getLayout();

    /**
     * Returns how exceptions thrown on the instrumented {@code AsyncAppender}
     * are handled.
     *
     * @return {@code true} if any exceptions thrown by the AsyncAppender will
     *         be logged or {@code false} if such exceptions are re-thrown.
     */
    boolean isIgnoreExceptions();

    /**
     * Returns the result of calling {@code toString} on the error handler of
     * this appender, or {@code "null"} if no error handler was set.
     *
     * @return result of calling {@code toString} on the error handler of this
     *         appender, or {@code "null"}
     */
    String getErrorHandler();

    /**
     * Returns a string description of all filters configured for the
     * instrumented {@code AsyncAppender}.
     *
     * @return a string description of all configured filters for this appender
     */
    String getFilter();

    /**
     * Returns a String array with the appender refs configured for the
     * instrumented {@code AsyncAppender}.
     *
     * @return the appender refs for the instrumented {@code AsyncAppender}.
     */
    String[] getAppenderRefs();

    /**
     * Returns {@code true} if this AsyncAppender will take a snapshot of the
     * stack with every log event to determine the class and method where the
     * logging call was made.
     *
     * @return {@code true} if location is included with every event,
     *         {@code false} otherwise
     */
    boolean isIncludeLocation();

    /**
     * Returns {@code true} if this AsyncAppender will block when the queue is
     * full, or {@code false} if events are dropped when the queue is full.
     *
     * @return whether this AsyncAppender will block or drop events when the
     *         queue is full.
     */
    boolean isBlocking();

    /**
     * Returns the name of the appender that any errors are logged to or {@code null}.
     * @return the name of the appender that any errors are logged to or {@code null}
     */
    String getErrorRef();

    int getQueueCapacity();

    int getQueueRemainingCapacity();
}

⏎ org/apache/logging/log4j/core/jmx/AsyncAppenderAdminMBean.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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