private final Lock lock = new ReentrantLock();
private final Condition condition = lock.newCondition();
private boolean running = false;
+ private Exception exception;
private long consumed = 0;
private KafkaConsumer<String, String> consumer = null;
- private final Map<Integer, Map<String, Integer>> seen = new HashMap<>();
+ private final Map<Integer, Map<String, Long>> seen = new HashMap<>();
+ private final Map<Integer, Long> offsets = new HashMap<>();
public EndlessConsumer(
{
partitions.forEach(tp ->
{
- log.info("{} - removing partition: {}", id, tp);
- Map<String, Integer> removed = seen.remove(tp.partition());
+ Integer partition = tp.partition();
+ Long newOffset = consumer.position(tp);
+ Long oldOffset = offsets.remove(partition);
+ log.info(
+ "{} - removing partition: {}, consumed {} records (offset {} -> {})",
+ id,
+ partition,
+ newOffset - oldOffset,
+ oldOffset,
+ newOffset);
+ Map<String, Long> removed = seen.remove(partition);
for (String key : removed.keySet())
{
log.info(
"{} - Seen {} messages for partition={}|key={}",
id,
removed.get(key),
- tp.partition(),
+ partition,
key);
}
});
{
partitions.forEach(tp ->
{
- log.info("{} - adding partition: {}", id, tp);
- seen.put(tp.partition(), new HashMap<>());
+ Integer partition = tp.partition();
+ Long offset = consumer.position(tp);
+ log.info("{} - adding partition: {}, offset={}", id, partition, offset);
+ offsets.put(partition, offset);
+ seen.put(partition, new HashMap<>());
});
}
});
Integer partition = record.partition();
String key = record.key() == null ? "NULL" : record.key();
- Map<String, Integer> byKey = seen.get(partition);
+ Map<String, Long> byKey = seen.get(partition);
if (!byKey.containsKey(key))
- byKey.put(key, 0);
+ byKey.put(key, 0l);
- int seenByKey = byKey.get(key);
+ long seenByKey = byKey.get(key);
seenByKey++;
byKey.put(key, seenByKey);
}
catch(Exception e)
{
log.error("{} - Unexpected error: {}", id, e.toString(), e);
- shutdown();
+ shutdown(e);
}
finally
{
}
private void shutdown()
+ {
+ shutdown(null);
+ }
+
+ private void shutdown(Exception e)
{
lock.lock();
try
{
running = false;
+ exception = e;
condition.signal();
}
finally
}
}
- public Map<Integer, Map<String, Integer>> getSeen()
+ public Map<Integer, Map<String, Long>> getSeen()
{
return seen;
}
log.info("{} - Starting - consumed {} messages before", id, consumed);
running = true;
+ exception = null;
executor.submit(this);
}
finally
log.info("{}: Consumed {} messages in total, exiting!", id, consumed);
}
}
+
+ public boolean running()
+ {
+ lock.lock();
+ try
+ {
+ return running;
+ }
+ finally
+ {
+ lock.unlock();
+ }
+ }
+
+ public Optional<Exception> exitStatus()
+ {
+ lock.lock();
+ try
+ {
+ if (running)
+ throw new IllegalStateException("No exit-status available: Consumer instance " + id + " is running!");
+
+ return Optional.ofNullable(exception);
+ }
+ finally
+ {
+ lock.unlock();
+ }
+ }
}