| package geode.kafka.source; |
| |
| import org.apache.geode.cache.query.CqEvent; |
| import org.apache.geode.cache.query.CqStatusListener; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import java.util.concurrent.BlockingQueue; |
| import java.util.concurrent.TimeUnit; |
| |
| class GeodeKafkaSourceListener implements CqStatusListener { |
| |
| private static final Logger logger = LoggerFactory.getLogger(GeodeKafkaSourceListener.class); |
| |
| public String regionName; |
| private BlockingQueue<GeodeEvent> eventBuffer; |
| private boolean initialResultsLoaded; |
| |
| public GeodeKafkaSourceListener(BlockingQueue<GeodeEvent> eventBuffer, String regionName) { |
| this.eventBuffer = eventBuffer; |
| this.regionName = regionName; |
| initialResultsLoaded = false; |
| } |
| |
| @Override |
| public void onEvent(CqEvent aCqEvent) { |
| while (!initialResultsLoaded) { |
| Thread.yield(); |
| } |
| try { |
| eventBuffer.offer(new GeodeEvent(regionName, aCqEvent), 2, TimeUnit.SECONDS); |
| } catch (InterruptedException e) { |
| |
| while (true) { |
| try { |
| if (!eventBuffer.offer(new GeodeEvent(regionName, aCqEvent), 2, TimeUnit.SECONDS)) |
| break; |
| } catch (InterruptedException ex) { |
| ex.printStackTrace(); |
| } |
| logger.info("GeodeKafkaSource Queue is full"); |
| } |
| } |
| } |
| |
| @Override |
| public void onError(CqEvent aCqEvent) { |
| |
| } |
| |
| @Override |
| public void onCqDisconnected() { |
| //we should probably redistribute or reconnect |
| } |
| |
| @Override |
| public void onCqConnected() { |
| |
| } |
| |
| public void signalInitialResultsLoaded() { |
| initialResultsLoaded = true; |
| } |
| } |