KafkaConsumer<Bytes, Bytes> offsetConsumer;
EndlessConsumer<K, V> endlessConsumer;
Map<TopicPartition, Long> oldOffsets;
- Map<TopicPartition, Long> newOffsets;
+ Map<TopicPartition, Long> seenOffsets;
Set<ConsumerRecord<K, V>> receivedRecords;
.untilAsserted(() ->
{
checkSeenOffsetsForProgress();
- compareToCommitedOffsets(newOffsets);
+ assertSeenOffsetsEqualCommittedOffsets(seenOffsets);
});
assertThatExceptionOfType(IllegalStateException.class)
.until(() -> !endlessConsumer.running());
checkSeenOffsetsForProgress();
- compareToCommitedOffsets(newOffsets);
+ assertSeenOffsetsEqualCommittedOffsets(seenOffsets);
endlessConsumer.start();
await("Consumer failed")
.until(() -> !endlessConsumer.running());
checkSeenOffsetsForProgress();
- compareToCommitedOffsets(newOffsets);
+ assertSeenOffsetsEqualCommittedOffsets(seenOffsets);
assertThat(receivedRecords.size())
.describedAs("Received not all sent events")
.isLessThan(numberOfGeneratedMessages);
.until(() -> !endlessConsumer.running());
checkSeenOffsetsForProgress();
- compareToCommitedOffsets(oldOffsets);
+ assertSeenOffsetsAreBehindCommittedOffsets(seenOffsets);
endlessConsumer.start();
await("Consumer failed")
.pollInterval(Duration.ofSeconds(1))
.until(() -> !endlessConsumer.running());
- checkSeenOffsetsForProgress();
- compareToCommitedOffsets(oldOffsets);
- assertThat(receivedRecords.size())
- .describedAs("Received not all sent events")
- .isLessThan(numberOfGeneratedMessages);
+ assertSeenOffsetsAreBehindCommittedOffsets(seenOffsets);
assertThatNoException()
.describedAs("Consumer should not be running")
/** Helper methods for the verification of expectations */
- void compareToCommitedOffsets(Map<TopicPartition, Long> offsetsToCheck)
+ void assertSeenOffsetsEqualCommittedOffsets(Map<TopicPartition, Long> offsetsToCheck)
{
doForCurrentOffsets((tp, offset) ->
{
Long expected = offsetsToCheck.get(tp) + 1;
- log.debug("Checking, if the offset for {} is {}", tp, expected);
+ log.debug("Checking, if the offset {} for {} is exactly {}", offset, tp, expected);
assertThat(offset)
.describedAs("Committed offset corresponds to the offset of the consumer")
.isEqualTo(expected);
});
}
+ void assertSeenOffsetsAreBehindCommittedOffsets(Map<TopicPartition, Long> offsetsToCheck)
+ {
+ List<Boolean> isOffsetBehindSeen = new LinkedList<>();
+
+ doForCurrentOffsets((tp, offset) ->
+ {
+ Long expected = offsetsToCheck.get(tp) + 1;
+ log.debug("Checking, if the offset {} for {} is at most {}", offset, tp, expected);
+ assertThat(offset)
+ .describedAs("Committed offset corresponds to the offset of the consumer")
+ .isLessThanOrEqualTo(expected);
+ isOffsetBehindSeen.add(offset < expected);
+ });
+
+ assertThat(isOffsetBehindSeen.stream().reduce(false, (result, next) -> result | next))
+ .describedAs("Committed offsets are behind seen offsets")
+ .isTrue();
+ }
+
void checkSeenOffsetsForProgress()
{
// Be sure, that some messages were consumed...!
partitions().forEach(tp ->
{
Long oldOffset = oldOffsets.get(tp) + 1;
- Long newOffset = newOffsets.get(tp) + 1;
+ Long newOffset = seenOffsets.get(tp) + 1;
if (!oldOffset.equals(newOffset))
{
log.debug("Progress for {}: {} -> {}", tp, oldOffset, newOffset);
seekToEnd();
oldOffsets = new HashMap<>();
- newOffsets = new HashMap<>();
+ seenOffsets = new HashMap<>();
receivedRecords = new HashSet<>();
doForCurrentOffsets((tp, offset) ->
{
oldOffsets.put(tp, offset - 1);
- newOffsets.put(tp, offset - 1);
+ seenOffsets.put(tp, offset - 1);
});
Consumer<ConsumerRecord<K, V>> captureOffsetAndExecuteTestHandler =
record ->
{
- newOffsets.put(
+ seenOffsets.put(
new TopicPartition(record.topic(), record.partition()),
record.offset());
receivedRecords.add(record);