ConsoleLogProvider.java

/**
 * The MIT License
 * Copyright (c) 2014 JMXTrans Team
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
package org.jmxtrans.core.log;

import javax.annotation.Nonnull;

import org.jmxtrans.utils.time.SystemClock;

public class ConsoleLogProvider implements LogProvider {

    public static final String JMXTRANS_LOG_LEVEL_PROP = "org.jmxtrans.log.level";

    private final SystemClock clock = new SystemClock();

    @Nonnull
    @Override
    public Logger getLogger(@Nonnull String name) {
        return new PrintWriterLogger(name, getLogLevel(), clock, System.out);
    }

    @Nonnull
    private Level getLogLevel() {
        String logLevelEnv = System.getProperty(JMXTRANS_LOG_LEVEL_PROP, "WARN");
        if (logLevelEnv == null) {
            return Level.WARN;
        }
        try {
            return Level.valueOf(logLevelEnv.toUpperCase());
        } catch (IllegalArgumentException e) {
            System.err.println("JmxTrans: loglevel is invalid, defaulting to WARN");
            return Level.WARN;
        }
    }

}