org.apache.jena.atlas.logging.LogCtlLog4j2 Maven / Gradle / Ivy

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This module contains non-RDF library code and the common system runtime.
There is a newer version: 5.2.0
/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.
 */

package org.apache.jena.atlas.logging;

import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;

import org.apache.jena.atlas.io.IO;
import org.apache.jena.atlas.lib.StrUtils;
import org.apache.logging.log4j.Level;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.core.LoggerContext;
import org.apache.logging.log4j.core.config.Configuration;
import org.apache.logging.log4j.core.config.ConfigurationFactory;
import org.apache.logging.log4j.core.config.ConfigurationSource;
import org.apache.logging.log4j.core.config.properties.PropertiesConfigurationFactory;

/**
 * Additional logging control, for Log4j2 as used by jena-cmds.
 * 

 * This class pulls in log4j2.
 * 

 * This class is split out from {@link LogCtl} to decouple the class loading dependencies.
 */
public class LogCtlLog4j2 {
    /**
     * Reset logging (log4j2). log4j2.properties format.
     */
    public static void resetLogging(String configString) {
        // Dispatch name to syntax.
        try (InputStream inputStream = new ByteArrayInputStream(StrUtils.asUTF8bytes(configString))) {
            resetLogging(inputStream, ".properties");
        } catch (IOException ex) {
            IO.exception(ex);
        }
    }

    public static void resetLogging(InputStream inputStream, String syntaxHint) throws IOException {
        ConfigurationSource source = new ConfigurationSource(inputStream);
        ConfigurationFactory factory = ( syntaxHint.endsWith(".properties") )
            ? new PropertiesConfigurationFactory()
            : ConfigurationFactory.getInstance();
        Configuration configuration = factory.getConfiguration(null, source);
        LoggerContext ctx = (LoggerContext) LogManager.getContext(false);
        // This changes existing loggers.
        ctx.setConfiguration(configuration);
    }

    /*package*/ static void setLoggerlevel(String logger, Level level) {
        try {
            if ( !logger.equals("") )
                org.apache.logging.log4j.core.config.Configurator.setLevel(logger, level);
            else
                org.apache.logging.log4j.core.config.Configurator.setRootLevel(level);
        } catch (NoClassDefFoundError ex) {
            Log.warnOnce(LogCtl.class, "Log4j2 Configurator not found", LogCtl.class);
        }
    }

    // basic setup.
    // @formatter:off
    /** A basic logging setup. */
    public static String log4j2setup = StrUtils.strjoinNL
        ( "## Command default log4j2 setup : log4j2 properties syntax."
        , "status = error"
        , "name = JenaLoggingDft"
//        , "filters = threshold"
//        , ""
//        , "filter.threshold.type = ThresholdFilter"
//        , "filter.threshold.level = ALL"
//      , ""
        , "appender.console.type = Console"
        , "appender.console.name = OUT"
        , "appender.console.target = SYSTEM_OUT"
        , "appender.console.layout.type = PatternLayout"
        , "appender.console.layout.pattern = %d{HH:mm:ss} %-5p %-15c{1} :: %m%n"
        , "#appender.console.layout.pattern = [%d{yyyy-MM-dd HH:mm:ss}] %-5p %-15c{1} :: %m%n"

        , "rootLogger.level                  = INFO"
        , "rootLogger.appenderRef.stdout.ref = OUT"

        , "logger.jena.name  = org.apache.jena"
        , "logger.jena.level = INFO"

        , "logger.arq-exec.name  = org.apache.jena.arq.exec"
        , "logger.arq-exec.level = INFO"

        , "logger.riot.name  = org.apache.jena.riot"
        , "logger.riot.level = INFO"

        // If mixed with Fuseki code, and command logging happens, then ensure Jetty is WARN.
        , "logger.jetty.name  = org.eclipse.jetty"
        , "logger.jetty.level = WARN"
        );
    // @formatter:on

//    /** A format for commands using stderr. */
//    public static String log4j2setupCmd = log4j2setup.replace("SYSTEM_OUT", "SYSTEM_ERR");
}