org.elasticsearch.common.logging.log4j.LogConfigurator Maven / Gradle / Ivy

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/*
 * Licensed to ElasticSearch and Shay Banon under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. ElasticSearch 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.elasticsearch.common.logging.log4j;

import com.google.common.collect.ImmutableMap;
import org.apache.log4j.PropertyConfigurator;
import org.elasticsearch.common.collect.MapBuilder;
import org.elasticsearch.common.settings.ImmutableSettings;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.env.Environment;
import org.elasticsearch.env.FailedToResolveConfigException;

import java.util.Map;
import java.util.Properties;

import static org.elasticsearch.common.settings.ImmutableSettings.settingsBuilder;

/**
 *
 */
public class LogConfigurator {

    private static boolean loaded;

    private static ImmutableMap replacements = new MapBuilder()
            .put("console", "org.elasticsearch.common.logging.log4j.ConsoleAppender")
            .put("async", "org.apache.log4j.AsyncAppender")
            .put("dailyRollingFile", "org.apache.log4j.DailyRollingFileAppender")
            .put("externallyRolledFile", "org.apache.log4j.ExternallyRolledFileAppender")
            .put("file", "org.apache.log4j.FileAppender")
            .put("jdbc", "org.apache.log4j.jdbc.JDBCAppender")
            .put("jms", "org.apache.log4j.net.JMSAppender")
            .put("lf5", "org.apache.log4j.lf5.LF5Appender")
            .put("ntevent", "org.apache.log4j.nt.NTEventLogAppender")
            .put("null", "org.apache.log4j.NullAppender")
            .put("rollingFile", "org.apache.log4j.RollingFileAppender")
            .put("smtp", "org.apache.log4j.net.SMTPAppender")
            .put("socket", "org.apache.log4j.net.SocketAppender")
            .put("socketHub", "org.apache.log4j.net.SocketHubAppender")
            .put("syslog", "org.apache.log4j.net.SyslogAppender")
            .put("telnet", "org.apache.log4j.net.TelnetAppender")
                    // layouts
            .put("simple", "org.apache.log4j.SimpleLayout")
            .put("html", "org.apache.log4j.HTMLLayout")
            .put("pattern", "org.apache.log4j.PatternLayout")
            .put("consolePattern", "org.apache.log4j.PatternLayout")
            .put("ttcc", "org.apache.log4j.TTCCLayout")
            .put("xml", "org.apache.log4j.XMLLayout")
            .immutableMap();

    public static void configure(Settings settings) {
        if (loaded) {
            return;
        }
        loaded = true;
        Environment environment = new Environment(settings);
        ImmutableSettings.Builder settingsBuilder = settingsBuilder().put(settings);
        try {
            settingsBuilder.loadFromUrl(environment.resolveConfig("logging.yml"));
        } catch (FailedToResolveConfigException e) {
            // ignore
        } catch (NoClassDefFoundError e) {
            // ignore, no yaml
        }
        try {
            settingsBuilder.loadFromUrl(environment.resolveConfig("logging.json"));
        } catch (FailedToResolveConfigException e) {
            // ignore
        }
        try {
            settingsBuilder.loadFromUrl(environment.resolveConfig("logging.properties"));
        } catch (FailedToResolveConfigException e) {
            // ignore
        }
        settingsBuilder
                .putProperties("elasticsearch.", System.getProperties())
                .putProperties("es.", System.getProperties())
                .replacePropertyPlaceholders();
        Properties props = new Properties();
        for (Map.Entry entry : settingsBuilder.build().getAsMap().entrySet()) {
            String key = "log4j." + entry.getKey();
            String value = entry.getValue();
            if (replacements.containsKey(value)) {
                value = replacements.get(value);
            }
            if (key.endsWith(".value")) {
                props.setProperty(key.substring(0, key.length() - ".value".length()), value);
            } else if (key.endsWith(".type")) {
                props.setProperty(key.substring(0, key.length() - ".type".length()), value);
            } else {
                props.setProperty(key, value);
            }
        }
        PropertyConfigurator.configure(props);
    }
}