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• cosmos-log-service
• 0.4.2
• source code
• LogLevel.java

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/*-
 * #%L
 * Cosmos
 * %%
 * Copyright (C) 2012 - 2021 Andreas Veithen
 * %%
 * Licensed 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.
 * #L%
 */
package com.github.veithen.cosmos.osgi.service.log;

import org.slf4j.Logger;

abstract class LogLevel {
    static final LogLevel TRACE =
            new LogLevel() {
                @Override
                boolean isEnabled(Logger logger) {
                    return logger.isTraceEnabled();
                }

                @Override
                void log(Logger logger, String msg, Throwable t) {
                    logger.trace(msg, t);
                }

                @Override
                void log(Logger logger, String format, Object... arguments) {
                    logger.trace(format, arguments);
                }
            };

    static final LogLevel DEBUG =
            new LogLevel() {
                @Override
                boolean isEnabled(Logger logger) {
                    return logger.isDebugEnabled();
                }

                @Override
                void log(Logger logger, String msg, Throwable t) {
                    logger.debug(msg, t);
                }

                @Override
                void log(Logger logger, String format, Object... arguments) {
                    logger.debug(format, arguments);
                }
            };

    static final LogLevel INFO =
            new LogLevel() {
                @Override
                boolean isEnabled(Logger logger) {
                    return logger.isInfoEnabled();
                }

                @Override
                void log(Logger logger, String msg, Throwable t) {
                    logger.info(msg, t);
                }

                @Override
                void log(Logger logger, String format, Object... arguments) {
                    logger.info(format, arguments);
                }
            };

    static final LogLevel WARN =
            new LogLevel() {
                @Override
                boolean isEnabled(Logger logger) {
                    return logger.isWarnEnabled();
                }

                @Override
                void log(Logger logger, String msg, Throwable t) {
                    logger.warn(msg, t);
                }

                @Override
                void log(Logger logger, String format, Object... arguments) {
                    logger.warn(format, arguments);
                }
            };

    static final LogLevel ERROR =
            new LogLevel() {
                @Override
                boolean isEnabled(Logger logger) {
                    return logger.isErrorEnabled();
                }

                @Override
                void log(Logger logger, String msg, Throwable t) {
                    logger.error(msg, t);
                }

                @Override
                void log(Logger logger, String format, Object... arguments) {
                    logger.error(format, arguments);
                }
            };

    private LogLevel() {}

    abstract boolean isEnabled(Logger logger);

    abstract void log(Logger logger, String msg, Throwable t);

    abstract void log(Logger logger, String format, Object... arguments);
}