Examples with PARTITION_NOT_FOUND org.zalando.nakadi.exceptions.runtime.InvalidCursorOperation.Reason.PARTITION_NOT_FOUND used on opensource projects

Example 1 with PARTITION_NOT_FOUND

use of org.zalando.nakadi.exceptions.runtime.InvalidCursorOperation.Reason.PARTITION_NOT_FOUND in project nakadi by zalando.

the class CursorOperationsService method cursorsLag.

public List<NakadiCursorLag> cursorsLag(final String eventTypeName, final List<NakadiCursor> cursors) throws InvalidCursorOperation {
    try {
        final List<Timeline> timelines = timelineService.getActiveTimelinesOrdered(eventTypeName);
        // Next 2 calls could be optimized to 1 storage call, instead of possible 2 calls.
        // But it is simpler not to do anything, cause timelines are not switched every day and almost all the time
        // (except retention time after switch) there will be only 1 active timeline, and this option is covered.
        final List<PartitionStatistics> oldestStats = getStatsForTimeline(timelines.get(0));
        final List<PartitionStatistics> newestStats = timelines.size() == 1 ? oldestStats : getStatsForTimeline(timelines.get(timelines.size() - 1));
        return cursors.stream().map(c -> {
            final PartitionStatistics oldestStat = oldestStats.stream().filter(item -> item.getPartition().equalsIgnoreCase(c.getPartition())).findAny().orElseThrow(() -> new InvalidCursorOperation(PARTITION_NOT_FOUND));
            NakadiCursor newestPosition = newestStats.stream().filter(item -> item.getPartition().equalsIgnoreCase(c.getPartition())).map(PartitionEndStatistics::getLast).findAny().orElseThrow(() -> new InvalidCursorOperation(PARTITION_NOT_FOUND));
            // it
            while (numberOfEventsBeforeCursor(newestPosition) == -1) {
                final int prevOrder = newestPosition.getTimeline().getOrder() - 1;
                final Timeline prevTimeline = timelines.stream().filter(t -> t.getOrder() == prevOrder).findAny().orElse(null);
                if (null == prevTimeline) {
                    break;
                }
                // We moved back, so timeline definitely have latest position set
                newestPosition = prevTimeline.getLatestPosition().toNakadiCursor(prevTimeline, newestPosition.getPartition());
            }
            // calls (in case of kafka)
            return new NakadiCursorLag(oldestStat.getFirst(), newestPosition, calculateDistance(c, newestPosition));
        }).collect(Collectors.toList());
    } catch (final NakadiException e) {
        throw new MyNakadiRuntimeException1("error", e);
    }
}