private ConcurrentHashMap<Long, Book> seedData() {
ConcurrentHashMap<Long, Book> bookMap = new ConcurrentHashMap<Long, Book>();
Book book = new Book();
book.setIsbn(1);
book.setCategory("computer");
book.setTitle("Java Concurrency in Practice");
try {
book.setCoverimage(new URL("http://goo.gl/N96GJN"));
} catch (MalformedURLException e) {
// eat the exception
}
bookMap.put(book.getIsbn(), book);
book = new Book();
book.setIsbn(2);
book.setCategory("computer");
book.setTitle("Restful Web Services");
try {
book.setCoverimage(new URL("http://goo.gl/ZGmzoJ"));
} catch (MalformedURLException e) {
// eat the exception
}
bookMap.put(book.getIsbn(), book);
return bookMap;
}
public Runnable listener() throws JMSException {
long isbn;
String bookTitle;
String bookCategory;
String webURL;
Book tempBook = new Book();
ArrayList<String> arrivals = new ArrayList<String>();
StompJmsConnectionFactory factory = new StompJmsConnectionFactory();
factory.setBrokerURI("tcp://" + apolloHost + ":" + apolloPort);
System.currentTimeMillis();
// System.out.println("Waiting for messages...");
while (true) {
Connection connection = factory.createConnection(apolloUser, apolloPassword);
connection.start();
Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
Destination dest = new StompJmsDestination(stompTopic);
MessageConsumer consumer = session.createConsumer(dest);
while (true) {
Message msg = consumer.receive(500);
if (msg == null) break;
if (msg instanceof TextMessage) {
String body = ((TextMessage) msg).getText();
arrivals.add(body);
} else {
System.out.println("Unexpected message type: " + msg.getClass());
}
}
connection.close();
if (!arrivals.isEmpty()) {
for (String arrival : arrivals) {
isbn = Long.parseLong(arrival.split(":")[0]);
bookTitle = arrival.split(":")[1].replaceAll("^\"|\"$", "");
bookCategory = arrival.split(":")[2].replaceAll("^\"|\"$", "");
webURL = arrival.split(":\"")[3];
webURL = webURL.substring(0, webURL.length() - 1);
tempBook = bookRepository.getBookByISBN(isbn);
// System.out.println("tempBook is "+tempBook);
// System.out.println("dummyBook is "+dummyBook);
if (tempBook.getIsbn() == 0) {
// System.out.println("reachable");
tempBook.setIsbn(isbn);
tempBook.setCategory(bookCategory);
tempBook.setTitle(bookTitle);
try {
tempBook.setCoverimage(new URL(webURL));
} catch (MalformedURLException e) {
e.printStackTrace();
}
bookRepository.addBook(tempBook);
} else {
// System.out.println("reachable, changing to available");
tempBook.setStatus(Status.available);
}
}
arrivals.clear();
}
}
}
