SLF4J API is a simple API that allows to plug in any desired logging library at deployment time.

Here is the source code for SLF4J API 2.0.4. You can download its pre-compiled version slf4j-api-2.0.4.jar at SLF4J Download Website.

⏎ org/slf4j/event/LoggingEvent.java

package org.slf4j.event;

import java.util.List;

import org.slf4j.Marker;

/**
 * The minimal interface sufficient for the restitution of data passed
 * by the user to the SLF4J API.
 * 
 * @author Ceki Gülcü
 * @since 1.7.15
 */
public interface LoggingEvent {

    Level getLevel();

    String getLoggerName();

    String getMessage();

    List<Object> getArguments();

    Object[] getArgumentArray();

    List<Marker> getMarkers();

    List<KeyValuePair> getKeyValuePairs();

    Throwable getThrowable();

    long getTimeStamp();

    String getThreadName();
 
    /**
     * Returns the presumed caller boundary provided by the logging library (not the user of the library). 
     * Null by default.
     *  
     * @return presumed caller, null by default.
     */
    default String getCallerBoundary() {
        return null;
    }
}

⏎ org/slf4j/event/LoggingEvent.java

Or download all of them as a single archive file:

File name: slf4j-api-2.0.4-sources.jar
File size: 70304 bytes
Release date: 2022-11-17
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