Examples with SingularitySlaveUsageWithId com.hubspot.singularity.SingularitySlaveUsageWithId used on opensource projects

Example 1 with SingularitySlaveUsageWithId

use of com.hubspot.singularity.SingularitySlaveUsageWithId in project Singularity by HubSpot.

the class SingularityMesosOfferScheduler method checkOffers.

public Collection<SingularityOfferHolder> checkOffers(final Collection<Offer> offers) {
    for (SingularityPendingTaskId taskId : taskManager.getPendingTasksMarkedForDeletion()) {
        lock.runWithRequestLock(() -> taskManager.deletePendingTask(taskId), taskId.getRequestId(), String.format("%s#%s", getClass().getSimpleName(), "checkOffers -> pendingTaskDeletes"));
    }
    scheduler.checkForDecomissions();
    scheduler.drainPendingQueue();
    if (offers.isEmpty()) {
        LOG.debug("No offers to check");
        return Collections.emptyList();
    }
    final List<SingularityTaskRequestHolder> sortedTaskRequestHolders = getSortedDueTaskRequests();
    final int numDueTasks = sortedTaskRequestHolders.size();
    final Map<String, SingularityOfferHolder> offerHolders = offers.stream().collect(Collectors.groupingBy((o) -> o.getAgentId().getValue())).entrySet().stream().filter((e) -> e.getValue().size() > 0).map((e) -> {
        List<Offer> offersList = e.getValue();
        String slaveId = e.getKey();
        return new SingularityOfferHolder(offersList, numDueTasks, slaveAndRackHelper.getRackIdOrDefault(offersList.get(0)), slaveId, offersList.get(0).getHostname(), slaveAndRackHelper.getTextAttributes(offersList.get(0)), slaveAndRackHelper.getReservedSlaveAttributes(offersList.get(0)));
    }).collect(Collectors.toMap(SingularityOfferHolder::getSlaveId, Function.identity()));
    if (sortedTaskRequestHolders.isEmpty()) {
        return offerHolders.values();
    }
    final AtomicInteger tasksScheduled = new AtomicInteger(0);
    Map<String, RequestUtilization> requestUtilizations = usageManager.getRequestUtilizations();
    List<SingularityTaskId> activeTaskIds = taskManager.getActiveTaskIds();
    final Map<String, SingularitySlaveUsageWithCalculatedScores> currentSlaveUsagesBySlaveId = usageManager.getCurrentSlaveUsages(offerHolders.values().stream().map(SingularityOfferHolder::getSlaveId).collect(Collectors.toList())).parallelStream().collect(Collectors.toMap(SingularitySlaveUsageWithId::getSlaveId, (usageWithId) -> new SingularitySlaveUsageWithCalculatedScores(usageWithId, configuration.getMesosConfiguration().getScoringStrategy(), configuration.getMesosConfiguration().getScoreUsingSystemLoad(), getMaxProbableUsageForSlave(activeTaskIds, requestUtilizations, offerHolders.get(usageWithId.getSlaveId()).getSanitizedHost()))));
    LOG.trace("Found slave usages {}", currentSlaveUsagesBySlaveId);
    Map<String, Integer> tasksPerOfferHost = new ConcurrentHashMap<>();
    for (SingularityTaskRequestHolder taskRequestHolder : sortedTaskRequestHolders) {
        lock.runWithRequestLock(() -> {
            Map<String, Double> scorePerOffer = new ConcurrentHashMap<>();
            List<SingularityTaskId> activeTaskIdsForRequest = leaderCache.getActiveTaskIdsForRequest(taskRequestHolder.getTaskRequest().getRequest().getId());
            List<CompletableFuture<Void>> scoringFutures = new ArrayList<>();
            AtomicReference<Throwable> scoringException = new AtomicReference<>(null);
            for (SingularityOfferHolder offerHolder : offerHolders.values()) {
                if (!isOfferFull(offerHolder)) {
                    scoringFutures.add(offerScoringSemaphore.call(() -> CompletableFuture.runAsync(() -> {
                        try {
                            double score = calculateScore(offerHolder, currentSlaveUsagesBySlaveId, tasksPerOfferHost, taskRequestHolder, activeTaskIdsForRequest);
                            if (score != 0) {
                                scorePerOffer.put(offerHolder.getSlaveId(), score);
                            }
                        } catch (Throwable t) {
                            LOG.error("Uncaught exception while scoring offers", t);
                            scoringException.set(t);
                        }
                    }, offerScoringExecutor)));
                }
            }
            CompletableFutures.allOf(scoringFutures).join();
            if (scoringException.get() != null) {
                LOG.warn("Exception caught in offer scoring futures, semaphore info: (concurrentRequests: {}, queueSize: {})", offerScoringSemaphore.getConcurrentRequests(), offerScoringSemaphore.getQueueSize());
                // This will be caught by either the LeaderOnlyPoller or resourceOffers uncaught exception code, causing an abort
                throw new RuntimeException(scoringException.get());
            }
            if (!scorePerOffer.isEmpty()) {
                SingularityOfferHolder bestOffer = offerHolders.get(Collections.max(scorePerOffer.entrySet(), Map.Entry.comparingByValue()).getKey());
                LOG.info("Best offer {}/1 is on {}", scorePerOffer.get(bestOffer.getSlaveId()), bestOffer.getSanitizedHost());
                SingularityMesosTaskHolder taskHolder = acceptTask(bestOffer, tasksPerOfferHost, taskRequestHolder);
                tasksScheduled.getAndIncrement();
                bestOffer.addMatchedTask(taskHolder);
                updateSlaveUsageScores(taskRequestHolder, currentSlaveUsagesBySlaveId, bestOffer.getSlaveId(), requestUtilizations);
            }
        }, taskRequestHolder.getTaskRequest().getRequest().getId(), String.format("%s#%s", getClass().getSimpleName(), "checkOffers"));
    }
    LOG.info("{} tasks scheduled, {} tasks remaining after examining {} offers", tasksScheduled, numDueTasks - tasksScheduled.get(), offers.size());
    return offerHolders.values();
}