* implementation.
 *
 * @since 3.1.0
 */
public interface Slf4jConfiguration {
    /**
     * Level
     */
    enum Level {
        DEBUG,
        INFO,
        ERROR
    }

    /**
     * Set root logging level.
     *
     * @param level the level
     */
    void setRootLoggerLevel(Level level);

    /**
     * Activate logging implementation configuration (if necessary).
     */

    @Override
    public void setRootLoggerLevel(Level level) {
        ch.qos.logback.classic.Level value;
        switch (level) {
            case DEBUG:
                value = ch.qos.logback.classic.Level.DEBUG;
                break;

            case INFO:
                value = ch.qos.logback.classic.Level.INFO;
                break;

            default:

     * The stack trace for this exception will be output when this error level is enabled.
     *
     * @param error
     */
    void info(Throwable error);

    /**
     * @return true if the <b>warn</b> error level is enabled
     */
    boolean isWarnEnabled();

    /**
     * Send a message to the user in the <b>warn</b> error level.
     *
     * @param content
     */

    }

    /**
     * A simple implementation which always logs messages of level ERROR
     * according to the format outlined above.
     */
    @Override
    public void error(String msg) {
        super.error(msg);
        logLevelRecorder.record(Level.ERROR);
    }

    /**
     * Perform single parameter substitution before logging the message of level
     * ERROR according to the format outlined above.

    /**
     * {@return true if the <b>debug</b> error level is enabled}.
     */
    boolean isDebugEnabled();

    /**
     * Sends a message to the user in the <b>debug</b> error level.
     *
     * @param content the message to log
     */
    void debug(CharSequence content);

    /**
     * Sends a message (and accompanying exception) to the user in the <b>debug</b> error level.

import java.util.Map;

import org.slf4j.event.Level;

/**
 * Responsible for keeping state of whether the threshold of the --fail-on-severity flag has been hit.
 */
public class LogLevelRecorder {
    private static final Map<String, Level> ACCEPTED_LEVELS = new HashMap<>();

    static {
        ACCEPTED_LEVELS.put("WARN", Level.WARN);
        ACCEPTED_LEVELS.put("WARNING", Level.WARN);

 The Maven Team
 -----

Configuration levels in maven

 In maven configuration control happens on four differ levels: the site level, the group level,
 the project level, and the user level. On the site level you can configure maven for all users
 utilizing the local installation, the group level allows configuration management for all the projects
 that belong to the same group, the project level allows configuration management at

     */
    String getMessage();

    /**
     * Gets the severity level of this problem.
     *
     * @return The severity level of this problem, never {@code null}.
     */
    Severity getSeverity();

    /**
     * Gets the applicable maven version/validation level of this problem
     * @return The version, never {@code null}.
     */
    Version getVersion();

 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.maven.logwrapper;

import org.junit.jupiter.api.Test;
import org.slf4j.event.Level;

import static org.hamcrest.CoreMatchers.containsString;
import static org.hamcrest.MatcherAssert.assertThat;
import static org.junit.jupiter.api.Assertions.assertThrows;

/**
 * Configuration for slf4j-log4j2.
 *
 * @since 3.1.0
 */
public class Log4j2Configuration extends BaseSlf4jConfiguration {
    @Override
    public void setRootLoggerLevel(Level level) {
        String value;
        switch (level) {
            case DEBUG:
                value = "debug";
                break;

            case INFO:
                value = "info";
                break;