public String downloadPresentation(Long stationId, Date timestamp) {
logger.debug("Downloading presentation...");
final Station station = stationDao.getStationById(stationId);
if (station == null || station.getIpAddress() == null) {
logger.error("Invalid station.");
return null;
}
File presentationDir = getPresentationDir();
String sStationId = String.valueOf(stationId);
String sTimestamp = String.valueOf(timestamp.getTime());
final String outputFileName =
ExmUtil.concat(sStationId, separator, sTimestamp, presentationExt);
File outputFile = new File(presentationDir, outputFileName);
final Integer port =
serverPropertyDao.getIntegerProperty(ConfigManager.MASTER_DUPLICATION_PORT);
final String path =
serverPropertyDao.getStringProperty(ConfigManager.MASTER_DUPLICATION_PRESENTATION_PATH);
final String login =
serverPropertyDao.getStringProperty(ConfigManager.MASTER_DUPLICATION_LOGIN);
final String password =
serverPropertyDao.getStringProperty(ConfigManager.MASTER_DUPLICATION_PASSWORD);
final Integer timeout =
serverPropertyDao.getIntegerProperty(ConfigManager.MASTER_DUPLICATION_PRESENTATION_TIMEOUT);
InputStream input = null;
OutputStream output = null;
try {
final URL url = new URL("http", station.getIpAddress(), port, path);
final String loginPassword = ExmUtil.concat(login, ":", password);
final String loginPasswordEnc = new String(Base64.encodeBase64(loginPassword.getBytes()));
URLConnection connection = url.openConnection();
connection.setRequestProperty("Authorization", "Basic " + loginPasswordEnc);
connection.setConnectTimeout(timeout);
// connection.setReadTimeout(timeout);
presentationDir.mkdirs();
input = connection.getInputStream();
output = new FileOutputStream(outputFile);
IOUtils.copy(input, output);
output.close();
input.close();
} catch (MalformedURLException e) {
logger.error("Cannot connect to the station.", e);
} catch (IOException e) {
logger.error("Cannot connect to the station.", e);
} finally {
IOUtils.closeQuietly(input);
IOUtils.closeQuietly(output);
}
return outputFileName;
}
public void sendDownloadRequestsToRoom(Long sourceStationId, String presentationId) {
final Integer port =
serverPropertyDao.getIntegerProperty(ConfigManager.MASTER_DUPLICATION_PORT);
final String presentationPath =
serverPropertyDao.getStringProperty(
ConfigManager.MASTER_DUPLICATION_PRESENTATION_REQUEST_PATH);
final String propertiesPath =
serverPropertyDao.getStringProperty(
ConfigManager.MASTER_DUPLICATION_PROPERTIES_REQUEST_PATH);
final String login =
serverPropertyDao.getStringProperty(ConfigManager.MASTER_DUPLICATION_LOGIN);
final String password =
serverPropertyDao.getStringProperty(ConfigManager.MASTER_DUPLICATION_PASSWORD);
final Integer presentationTimeout =
serverPropertyDao.getIntegerProperty(
ConfigManager.MASTER_DUPLICATION_PRESENTATION_REQUEST_TIMEOUT);
final Integer propertiesTimeout =
serverPropertyDao.getIntegerProperty(
ConfigManager.MASTER_DUPLICATION_PROPERTIES_REQUEST_TIMEOUT);
Set<Station> stations = stationDao.getStationsFromRoom(sourceStationId);
URLConnection connection = null;
InputStream input = null;
Station sourceStation = stationDao.getStationById(sourceStationId);
if (sourceStation == null) {
logger.error("Invalid station: " + sourceStationId);
return;
}
for (Station station : stations) {
if (sourceStationId.equals(station.getId())) {
// If it is a source station - skip.
continue;
}
try {
String fullPath =
ExmUtil.concat(
presentationPath, "?presentationId=", URLEncoder.encode(presentationId, "UTF-8"));
URL url = new URL("http", station.getIpAddress(), port, fullPath);
final String loginPassword = ExmUtil.concat(login, ":", password);
final String loginPasswordEnc = new String(Base64.encodeBase64(loginPassword.getBytes()));
if (logger.isDebugEnabled()) {
logger.debug("Connecting to station: " + station.getIpAddress());
}
connection = url.openConnection();
connection.setRequestProperty("Authorization", "Basic " + loginPasswordEnc);
connection.setConnectTimeout(presentationTimeout);
connection.setReadTimeout(presentationTimeout);
input = connection.getInputStream();
input.close();
input = null;
String sourceAddress =
ExmUtil.concat(sourceStation.getIpAddress(), ":", String.valueOf(port));
fullPath =
ExmUtil.concat(
propertiesPath, "?sourceAddress=", URLEncoder.encode(sourceAddress, "UTF-8"));
url = new URL("http", station.getIpAddress(), port, fullPath);
if (logger.isDebugEnabled()) {
logger.debug("Connecting to station: " + station.getIpAddress());
}
connection = url.openConnection();
connection.setRequestProperty("Authorization", "Basic " + loginPasswordEnc);
connection.setConnectTimeout(propertiesTimeout);
connection.setReadTimeout(propertiesTimeout);
input = connection.getInputStream();
input.close();
input = null;
} catch (MalformedURLException e) {
logger.warn("Cannot connect to the station: " + station.getIpAddress(), e);
} catch (IOException e) {
logger.warn("Cannot connect to the station: " + station.getIpAddress(), e);
} finally {
IOUtils.closeQuietly(input);
}
}
}