List of usage examples for javafx.concurrent Task getProgress
@Override public final double getProgress()
From source file:sh.isaac.api.util.DownloadUnzipTask.java
/** * Call./*from w ww.jav a 2 s . c o m*/ * * @return the file * @throws Exception the exception * @see javafx.concurrent.Task#call() */ @Override protected File call() throws Exception { final File dataFile = download(this.url); String calculatedSha1Value = null; String expectedSha1Value = null; ; try { LOG.debug("Attempting to get .sha1 file"); final File sha1File = download(new URL(this.url.toString() + ".sha1")); expectedSha1Value = Files.readAllLines(sha1File.toPath()).get(0); final Task<String> calculateTask = ChecksumGenerator.calculateChecksum("SHA1", dataFile); calculateTask.messageProperty().addListener( (ChangeListener<String>) (observable, oldValue, newValue) -> updateMessage(newValue)); calculateTask.progressProperty().addListener((ChangeListener<Number>) (observable, oldValue, newValue) -> updateProgress(calculateTask.getProgress(), calculateTask.getTotalWork())); WorkExecutors.get().getExecutor().execute(calculateTask); calculatedSha1Value = calculateTask.get(); sha1File.delete(); } catch (final Exception e1) { LOG.debug("Failed to get .sha1 file", e1); } if ((calculatedSha1Value != null) && !calculatedSha1Value.equals(expectedSha1Value)) { if (this.failOnBadCheksum) { throw new RuntimeException("Checksum of downloaded file '" + this.url.toString() + "' does not match the expected value!"); } else { LOG.warn("Checksum of downloaded file '" + this.url.toString() + "' does not match the expected value!"); } } if (this.cancel) { LOG.debug("Download cancelled"); throw new Exception("Cancelled!"); } if (this.unzip) { updateTitle("Unzipping"); try { final ZipFile zipFile = new ZipFile(dataFile); zipFile.setRunInThread(true); zipFile.extractAll(this.targetFolder.getAbsolutePath()); while (zipFile.getProgressMonitor().getState() == ProgressMonitor.STATE_BUSY) { if (this.cancel) { zipFile.getProgressMonitor().cancelAllTasks(); LOG.debug("Download cancelled"); throw new Exception("Cancelled!"); } updateProgress(zipFile.getProgressMonitor().getPercentDone(), 100); updateMessage("Unzipping " + dataFile.getName() + " at " + zipFile.getProgressMonitor().getPercentDone() + "%"); try { // TODO see if there is an API where I don't have to poll for completion Thread.sleep(25); } catch (final InterruptedException e) { // noop } } LOG.debug("Unzip complete"); } catch (final Exception e) { LOG.error("error unzipping", e); throw new Exception("The downloaded file doesn't appear to be a zip file"); } finally { dataFile.delete(); } return this.targetFolder; } else { return dataFile; } }