org.sonarsource.analyzer.commons.ProgressReport Maven / Gradle / Ivy

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/*
 * SonarQube Analyzer Commons
 * Copyright (C) 2009-2018 SonarSource SA
 * mailto:info AT sonarsource DOT com
 *
 * This program 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.
 *
 * This program 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 this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */
package org.sonarsource.analyzer.commons;

import java.util.Iterator;
import org.sonar.api.utils.log.Logger;
import org.sonar.api.utils.log.Loggers;

public class ProgressReport implements Runnable {

  private final long period;
  private final Logger logger;
  private int count;
  private int currentFileNumber = -1;
  private String currentFilename;
  private Iterator it;
  private final Thread thread;
  private final String adjective;
  private boolean success = false;

  public ProgressReport(String threadName, long period, Logger logger, String adjective) {
    this.period = period;
    this.logger = logger;
    this.adjective = adjective;
    thread = new Thread(this);
    thread.setName(threadName);
    thread.setDaemon(true);
  }

  public ProgressReport(String threadName, long period, String adjective) {
    this(threadName, period, Loggers.get(ProgressReport.class), adjective);
  }

  public ProgressReport(String threadName, long period) {
    this(threadName, period, "analyzed");
  }

  @Override
  public void run() {
    while (!Thread.interrupted()) {
      try {
        Thread.sleep(period);
        synchronized (this) {
          log(currentFileNumber + "/" + count + " files " + adjective + ", current file: " + currentFilename);
        }
      } catch (InterruptedException e) {
        Thread.currentThread().interrupt();
        break;
      }
    }
    synchronized (this) {
      if (success) {
        log(count + "/" + count + " source files have been " + adjective);
      }
    }
  }

  public synchronized void start(Iterable filenames) {
    count = size(filenames);
    it = filenames.iterator();

    nextFile();

    log(count + " source files to be " + adjective);
    thread.start();
  }

  public synchronized void nextFile() {
    if (it.hasNext()) {
      currentFileNumber++;
      currentFilename = it.next();
    }
  }

  public synchronized void stop() {
    success = true;
    thread.interrupt();
  }

  public synchronized void cancel() {
    thread.interrupt();
  }

  public void join() throws InterruptedException {
    thread.join();
  }

  private void log(String message) {
    synchronized (logger) {
      logger.info(message);
      logger.notifyAll();
    }
  }

  private static int size(Iterable iterable) {
    int count = 0;
    Iterator iterator = iterable.iterator();
    while (iterator.hasNext()) {
      iterator.next();
      count++;
    }

    return  count;
  }

}