private void handleException(Exception e) {
if (INTERRUPTED_EXCEPTION_TYPES.contains(e.getClass())) {
LOG.info("Changes feed was interrupted");
} else {
LOG.error("Caught exception while listening to changes feed:", e);
}
}
public void run() {
try {
String line = reader.readLine();
while (shouldRun && line != null) {
if (line.length() > 0) {
handleChange(line);
} else {
handleHeartbeat();
}
line = reader.readLine();
}
String reason = !shouldRun ? "Cancelled" : "EOF";
LOG.info("Changes feed stopped. Reason: " + reason);
} catch (Exception e) {
handleException(e);
} finally {
sendInterruptMarker();
httpResponse.abort();
try {
reader.close();
} catch (IOException e) {
}
}
}
@edu.umd.cs.findbugs.annotations.SuppressWarnings(value = "RV_RETURN_VALUE_IGNORED_BAD_PRACTICE")
private void sendInterruptMarker() {
LOG.debug("Sending interrupt marker in order to interrupt feed consumer");
changes.offer(INTERRUPT_MARKER);
}
public void cancel() {
LOG.debug("Feed cancelled");
shouldRun = false;
thread.interrupt();
}
private void handleHeartbeat() {
LOG.debug("Got heartbeat from DB");
}