Examples with UNAVAILABLE org.zalando.nakadi.domain.CursorError.UNAVAILABLE used on opensource projects

Example 1 with UNAVAILABLE

use of org.zalando.nakadi.domain.CursorError.UNAVAILABLE in project nakadi by zalando.

the class KafkaTopicRepository method convertToKafkaCursors.

private Map<NakadiCursor, KafkaCursor> convertToKafkaCursors(final List<NakadiCursor> cursors) throws ServiceUnavailableException, InvalidCursorException {
    final List<Timeline> timelines = cursors.stream().map(NakadiCursor::getTimeline).distinct().collect(toList());
    final List<PartitionStatistics> statistics = loadTopicStatistics(timelines);
    final Map<NakadiCursor, KafkaCursor> result = new HashMap<>();
    for (final NakadiCursor position : cursors) {
        validateCursorForNulls(position);
        final Optional<PartitionStatistics> partition = statistics.stream().filter(t -> Objects.equals(t.getPartition(), position.getPartition())).filter(t -> Objects.equals(t.getTimeline().getTopic(), position.getTopic())).findAny();
        if (!partition.isPresent()) {
            throw new InvalidCursorException(PARTITION_NOT_FOUND, position);
        }
        final KafkaCursor toCheck = position.asKafkaCursor();
        // Checking oldest position
        final KafkaCursor oldestCursor = KafkaCursor.fromNakadiCursor(partition.get().getBeforeFirst());
        if (toCheck.compareTo(oldestCursor) < 0) {
            throw new InvalidCursorException(UNAVAILABLE, position);
        }
        // checking newest position
        final KafkaCursor newestPosition = KafkaCursor.fromNakadiCursor(partition.get().getLast());
        if (toCheck.compareTo(newestPosition) > 0) {
            throw new InvalidCursorException(UNAVAILABLE, position);
        } else {
            result.put(position, toCheck);
        }
    }
    return result;
}