public StatisticAggregator(CouchDbDaoFactory daoFactory, StatisticDao statisticDao) {
_statisticDao = statisticDao;
_packageDao = daoFactory.getPackageDao();
_productDao = daoFactory.getProductDao();
_productCategoryDao = daoFactory.getProductCategoryDao();
_shopCategoryDao = daoFactory.getShopCategoryDao();
_shopDao = daoFactory.getShopDao();
_unitDao = daoFactory.getUnitDao();
}
public void run() {
_stopFlag = false;
long seqNr = 0;
while (!_stopFlag) {
try {
seqNr = Math.max(seqNr, _statisticDao.getMaxSequenceNr());
CouchDbConfig configuration = CouchDbDaoFactory.getConfiguration();
String host = configuration.getCouchHost();
String userInfo = null;
if (configuration.getCouchUser() != null || configuration.getCouchPassword() != null) {
userInfo = configuration.getCouchUser() + ":" + configuration.getCouchPassword();
}
int port = configuration.getCouchPort();
String path = "/" + configuration.getCouchDatabase() + "/_changes";
String query = "feed=continuous&include_docs=true&since=" + seqNr;
_client = new DefaultHttpClient();
URI uri = new URI("http", userInfo, host, port, path, query, null);
_getRequest = new HttpGet(uri);
HttpResponse response = _client.execute(_getRequest);
HttpEntity entity = response.getEntity();
if (entity != null) {
InputStream inputStream = entity.getContent();
BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));
String line;
while ((line = reader.readLine()) != null) {
if (line.length() > 0) {
seqNr = Math.max(seqNr, parseLine(line));
}
}
}
} catch (Throwable e) {
Log.error("Exception in StatisticAggregator caught: " + e.getMessage(), e);
}
// make sure we won't hang in a CPU eating loop if there is an error
try {
sleep(5000);
} catch (InterruptedException e) {
// ignore it
}
}
}