public LauncherVersion fetchRemoteVersion() {
try {
String versionJson = Downloader.create(removeVersionURL).downloadToString();
return LauncherVersion.fromJson(versionJson);
} catch (Throwable e) {
Logger.warning("Unable to fetch remote version: %s", e.getMessage());
e.printStackTrace();
}
return null;
}
public static void main(String args[]) throws Exception {
if (args.length < 2) {
System.out.println("Invalid usage!");
return;
}
final File currentPath = PlatformUtils.getApplicationPath("mualauncher");
Logger.initialize(new File(currentPath, "updater.log"));
File tempFile = new File(args[0]);
File launcherFile = new File(args[1]);
try {
Logger.info("Removing old version");
if (!launcherFile.delete()) {
throw new IOException("Unable to remove old file " + launcherFile);
}
Logger.info("Copying new launcher from %s", tempFile.getAbsolutePath());
FileUtils.copyFile(tempFile, launcherFile);
} catch (IOException e) {
Logger.info("Autoupdate failed: %s ", e.getMessage());
}
// Start launcher
Logger.info("Starting launcher %s", launcherFile.getAbsolutePath());
PlatformUtils.launchJavaApplication(
launcherFile.getAbsolutePath(), Launcher.class.getCanonicalName(), "updated");
Logger.info("Update done!");
System.exit(0);
}
public void updateLauncher() {
Logger.info("Checking lastest version");
LauncherVersion localVersion = LauncherVersion.getLocalVersion();
Logger.info("Local version is %s", localVersion);
LauncherVersion remoteVersion = fetchRemoteVersion();
Logger.info("Remote version is %s", remoteVersion);
if (localVersion.compareTo(remoteVersion) >= 0) { // already lastest version
Logger.info("Already lastest version (%s/%s", localVersion, remoteVersion);
return;
}
Logger.info("Performing update to %s", remoteVersion);
try {
File localBinary = getLocalFile();
String format = getExtension(localBinary);
Logger.info("Local file: %s", localBinary.getAbsolutePath());
Logger.info("Downloading update");
File tempUpdater = downloadUpdate(remoteVersion, format);
Logger.info("Downloaded update to %s", tempUpdater.getAbsolutePath());
Logger.info("Launching self-updater");
String updater = tempUpdater.getAbsolutePath();
PlatformUtils.launchJavaApplication(
updater,
LauncherUpdater.class.getCanonicalName(),
updater,
localBinary.getAbsolutePath());
Logger.info("Now exiting to unlock file");
System.exit(0);
Logger.info("If you are watching this you are pretty much a pirate now!");
} catch (IOException e) {
Logger.error("Error during launcher update: ", e.getMessage());
}
}