@Override
public void run() {
while (provider.isRunning()) {
ResponseList<Post> postResponseList;
try {
postResponseList = client.getFeed(id);
Set<Post> update = Sets.newHashSet(postResponseList);
Set<Post> repeats = Sets.intersection(priorPollResult, Sets.newHashSet(update));
Set<Post> entrySet = Sets.difference(update, repeats);
LOGGER.debug(
this.id
+ " response: "
+ update.size()
+ " previous: "
+ repeats.size()
+ " new: "
+ entrySet.size());
for (Post item : entrySet) {
String json = DataObjectFactory.getRawJSON(item);
org.apache.streams.facebook.Post post =
mapper.readValue(json, org.apache.streams.facebook.Post.class);
try {
lock.readLock().lock();
ComponentUtils.offerUntilSuccess(new StreamsDatum(post), providerQueue);
countersCurrent.incrementAttempt();
} finally {
lock.readLock().unlock();
}
}
priorPollResult = update;
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
Thread.sleep(configuration.getPollIntervalMillis());
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
}
}
}
}
void shutdownAndAwaitTermination(ExecutorService pool) {
pool.shutdown(); // Disable new tasks from being submitted
try {
// Wait a while for existing tasks to terminate
if (!pool.awaitTermination(10, TimeUnit.SECONDS)) {
pool.shutdownNow(); // Cancel currently executing tasks
// Wait a while for tasks to respond to being cancelled
if (!pool.awaitTermination(10, TimeUnit.SECONDS))
System.err.println("Pool did not terminate");
}
} catch (InterruptedException ie) {
// (Re-)Cancel if current thread also interrupted
pool.shutdownNow();
// Preserve interrupt status
Thread.currentThread().interrupt();
}
}