org.sonar.core.config.Logback.java Source code

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Here is the source code for org.sonar.core.config.Logback.java

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/*
 * Sonar, open source software quality management tool.
 * Copyright (C) 2008-2012 SonarSource
 * mailto:contact AT sonarsource DOT com
 *
 * Sonar is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 3 of the License, or (at your option) any later version.
 *
 * Sonar is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with Sonar; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02
 */
package org.sonar.core.config;

import ch.qos.logback.classic.Level;
import ch.qos.logback.classic.LoggerContext;
import ch.qos.logback.classic.joran.JoranConfigurator;
import ch.qos.logback.core.joran.spi.JoranException;
import ch.qos.logback.core.util.StatusPrinter;
import org.apache.commons.io.FileUtils;
import org.apache.commons.io.IOUtils;
import org.slf4j.LoggerFactory;
import org.sonar.api.BatchComponent;
import org.sonar.api.ServerComponent;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.Map;

/**
 * Configure Logback
 *
 * @since 2.12
 */
public class Logback implements BatchComponent, ServerComponent {

    public static void configure(String classloaderPath, Map<String, String> substitutionVariables) {
        InputStream input = Logback.class.getResourceAsStream(classloaderPath);
        if (input == null) {
            throw new IllegalArgumentException(
                    "Logback configuration not found in classloader: " + classloaderPath);
        }
        configure(input, substitutionVariables);
    }

    public static void configure(File logbackFile, Map<String, String> substitutionVariables) {
        try {
            FileInputStream input = FileUtils.openInputStream(logbackFile);
            configure(input, substitutionVariables);
        } catch (IOException e) {
            throw new IllegalArgumentException("Fail to load the Logback configuration: " + logbackFile, e);
        }
    }

    /**
     * Note that this method closes the input stream
     */
    private static void configure(InputStream input, Map<String, String> substitutionVariables) {
        LoggerContext lc = (LoggerContext) LoggerFactory.getILoggerFactory();
        try {
            JoranConfigurator configurator = new JoranConfigurator();
            configurator.setContext(configureContext(lc, substitutionVariables));
            configurator.doConfigure(input);
        } catch (JoranException e) {
            // StatusPrinter will handle this
        } finally {
            IOUtils.closeQuietly(input);
        }
        StatusPrinter.printInCaseOfErrorsOrWarnings(lc);
    }

    private static LoggerContext configureContext(LoggerContext context,
            Map<String, String> substitutionVariables) {
        context.reset();
        for (Map.Entry<String, String> entry : substitutionVariables.entrySet()) {
            context.putProperty(entry.getKey(), entry.getValue());
        }
        return context;
    }

    public void setLoggerLevel(String loggerName, Level level) {
        ((ch.qos.logback.classic.Logger) LoggerFactory.getLogger(loggerName)).setLevel(level);
    }
}