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package io.cucumber.core.logging;

import java.util.function.Supplier;

/**
 * Logs messages to {@link java.util.logging.Logger}.
 * 
 * The methods correspond to {@link java.util.logging.Level} in JUL:
 * 

 * {@code error} maps to {@link java.util.logging.Level#SEVERE}
 * {@code warn} maps to {@link java.util.logging.Level#WARNING}
 * {@code info} maps to {@link java.util.logging.Level#INFO}
 * {@code config} maps to {@link java.util.logging.Level#CONFIG}
 * {@code debug} maps to {@link java.util.logging.Level#FINE}
 * {@code trace} maps to {@link java.util.logging.Level#FINER}
 * 
 */
public interface Logger {

    /**
     * Log the {@code message} at error level.
     *
     * @param message The message to log.
     */
    void error(Supplier message);

    /**
     * Log the {@code message} and {@code throwable} at error level.
     *
     * @param throwable The throwable to log.
     * @param message   The message to log.
     */
    void error(Throwable throwable, Supplier message);

    /**
     * Log the {@code message} at warning level.
     *
     * @param message The message to log.
     */
    void warn(Supplier message);

    /**
     * Log the {@code message} and {@code throwable} at warning level.
     *
     * @param throwable The throwable to log.
     * @param message   The message to log.
     */
    void warn(Throwable throwable, Supplier message);

    /**
     * Log the {@code message} at info level.
     *
     * @param message The message to log.
     */
    void info(Supplier message);

    /**
     * Log the {@code message} and {@code throwable} at info level.
     *
     * @param throwable The throwable to log.
     * @param message   The message to log.
     */
    void info(Throwable throwable, Supplier message);

    /**
     * Log the {@code message} at config level.
     *
     * @param message The message to log.
     */
    void config(Supplier message);

    /**
     * Log the {@code message} and {@code throwable} at config level.
     *
     * @param throwable The throwable to log.
     * @param message   The message to log.
     */
    void config(Throwable throwable, Supplier message);

    /**
     * Log the {@code message} at debug level.
     *
     * @param message The message to log.
     */
    void debug(Supplier message);

    /**
     * Log {@code message} and {@code throwable} at debug level.
     *
     * @param throwable The throwable to log.
     * @param message   The message to log.
     */
    void debug(Throwable throwable, Supplier message);

    /**
     * Log the {@code message} at trace level.
     *
     * @param message The message to log.
     */
    void trace(Supplier message);

    /**
     * Log the {@code message} and {@code throwable} at trace level.
     *
     * @param throwable The throwable to log.
     * @param message   The message to log.
     */
    void trace(Throwable throwable, Supplier message);

}