Examples with ServiceTemporarilyUnavailableException org.zalando.nakadi.exceptions.runtime.ServiceTemporarilyUnavailableException used on opensource projects

Example 1 with ServiceTemporarilyUnavailableException

use of org.zalando.nakadi.exceptions.runtime.ServiceTemporarilyUnavailableException in project nakadi by zalando.

the class AbstractZkSubscriptionClient method loadDataAsync.

protected <K, V> Map<K, V> loadDataAsync(final Collection<K> keys, final Function<K, String> keyConverter, final BiFunction<K, byte[], V> valueConverter) throws ServiceTemporarilyUnavailableException, NakadiRuntimeException {
    final Map<K, V> result = new HashMap<>();
    final CountDownLatch latch = new CountDownLatch(keys.size());
    try {
        for (final K key : keys) {
            final String zkKey = keyConverter.apply(key);
            getCurator().getData().inBackground((client, event) -> {
                try {
                    if (event.getResultCode() == KeeperException.Code.OK.intValue()) {
                        final V value = valueConverter.apply(key, event.getData());
                        synchronized (result) {
                            result.put(key, value);
                        }
                    } else {
                        getLog().error("Failed to get {} data from zk. status code: {}", zkKey, event.getResultCode());
                    }
                } catch (RuntimeException ex) {
                    getLog().error("Failed to memorize {} key value", key, ex);
                } finally {
                    latch.countDown();
                }
            }).forPath(zkKey);
        }
    } catch (Exception ex) {
        throw new NakadiRuntimeException(ex);
    }
    try {
        if (!latch.await(MAX_ZK_RESPONSE_SECONDS, TimeUnit.SECONDS)) {
            throw new ServiceTemporarilyUnavailableException("Failed to wait for zk response", null);
        }
    } catch (InterruptedException ex) {
        Thread.currentThread().interrupt();
        throw new ServiceTemporarilyUnavailableException("Failed to wait for zk response", ex);
    }
    if (result.size() != keys.size()) {
        throw new ServiceTemporarilyUnavailableException("Failed to wait for keys " + keys.stream().filter(v -> !result.containsKey(v)).map(String::valueOf).collect(Collectors.joining(", ")) + " to be in response", null);
    }
    return result;
}

Example 2 with ServiceTemporarilyUnavailableException

use of org.zalando.nakadi.exceptions.runtime.ServiceTemporarilyUnavailableException in project nakadi by zalando.

the class AbstractZkSubscriptionClient method listSessions.

@Override
public final Collection<Session> listSessions() throws SubscriptionNotInitializedException, NakadiRuntimeException, ServiceTemporarilyUnavailableException {
    getLog().info("fetching sessions information");
    final List<String> zkSessions;
    try {
        zkSessions = getCurator().getChildren().forPath(getSubscriptionPath("/sessions"));
    } catch (final KeeperException.NoNodeException e) {
        throw new SubscriptionNotInitializedException(getSubscriptionId());
    } catch (Exception ex) {
        throw new NakadiRuntimeException(ex);
    }
    return loadDataAsync(zkSessions, key -> getSubscriptionPath("/sessions/" + key), this::deserializeSession).values();
}

Example 3 with ServiceTemporarilyUnavailableException

use of org.zalando.nakadi.exceptions.runtime.ServiceTemporarilyUnavailableException in project nakadi by zalando.

the class EventTypeService method update.

public void update(final String eventTypeName, final EventTypeBase eventTypeBase) throws TopicConfigException, InconsistentStateException, NakadiRuntimeException, ServiceTemporarilyUnavailableException, UnableProcessException, DbWriteOperationsBlockedException {
    if (featureToggleService.isFeatureEnabled(FeatureToggleService.Feature.DISABLE_DB_WRITE_OPERATIONS)) {
        throw new DbWriteOperationsBlockedException("Cannot update event type: write operations on DB " + "are blocked by feature flag.");
    }
    Closeable updatingCloser = null;
    try {
        updatingCloser = timelineSync.workWithEventType(eventTypeName, nakadiSettings.getTimelineWaitTimeoutMs());
        final EventType original = eventTypeRepository.findByName(eventTypeName);
        authorizationValidator.authorizeEventTypeAdmin(original);
        authorizationValidator.validateAuthorization(original, eventTypeBase);
        validateName(eventTypeName, eventTypeBase);
        validateSchema(eventTypeBase);
        partitionResolver.validate(eventTypeBase);
        final EventType eventType = schemaEvolutionService.evolve(original, eventTypeBase);
        eventType.setDefaultStatistic(validateStatisticsUpdate(original.getDefaultStatistic(), eventType.getDefaultStatistic()));
        updateRetentionTime(original, eventType);
    } catch (final InterruptedException e) {
        Thread.currentThread().interrupt();
        throw new ServiceTemporarilyUnavailableException("Event type is currently in maintenance, please repeat request", e);
    } catch (final TimeoutException e) {
        LOG.error("Failed to wait for timeline switch", e);
        throw new ServiceTemporarilyUnavailableException("Event type is currently in maintenance, please repeat request", e);
    } catch (final NakadiException e) {
        LOG.error("Unable to update event type", e);
        throw new NakadiRuntimeException(e);
    } finally {
        try {
            if (updatingCloser != null) {
                updatingCloser.close();
            }
        } catch (final IOException e) {
            LOG.error("Exception occurred when releasing usage of event-type", e);
        }
    }
    nakadiKpiPublisher.publish(etLogEventType, () -> new JSONObject().put("event_type", eventTypeName).put("status", "updated").put("category", eventTypeBase.getCategory()).put("authz", identifyAuthzState(eventTypeBase)).put("compatibility_mode", eventTypeBase.getCompatibilityMode()));
}

Example 4 with ServiceTemporarilyUnavailableException

use of org.zalando.nakadi.exceptions.runtime.ServiceTemporarilyUnavailableException in project nakadi by zalando.

the class EventTypeService method delete.

public void delete(final String eventTypeName) throws EventTypeDeletionException, AccessDeniedException, NoEventTypeException, ConflictException, ServiceTemporarilyUnavailableException, DbWriteOperationsBlockedException {
    if (featureToggleService.isFeatureEnabled(FeatureToggleService.Feature.DISABLE_DB_WRITE_OPERATIONS)) {
        throw new DbWriteOperationsBlockedException("Cannot delete event type: write operations on DB " + "are blocked by feature flag.");
    }
    Closeable deletionCloser = null;
    final EventType eventType;
    Multimap<TopicRepository, String> topicsToDelete = null;
    try {
        deletionCloser = timelineSync.workWithEventType(eventTypeName, nakadiSettings.getTimelineWaitTimeoutMs());
        final Optional<EventType> eventTypeOpt = eventTypeRepository.findByNameO(eventTypeName);
        if (!eventTypeOpt.isPresent()) {
            throw new NoEventTypeException("EventType \"" + eventTypeName + "\" does not exist.");
        }
        eventType = eventTypeOpt.get();
        authorizationValidator.authorizeEventTypeAdmin(eventType);
        final List<Subscription> subscriptions = subscriptionRepository.listSubscriptions(ImmutableSet.of(eventTypeName), Optional.empty(), 0, 1);
        if (!subscriptions.isEmpty()) {
            throw new ConflictException("Can't remove event type " + eventTypeName + ", as it has subscriptions");
        }
        topicsToDelete = transactionTemplate.execute(action -> deleteEventType(eventTypeName));
    } catch (final InterruptedException e) {
        Thread.currentThread().interrupt();
        LOG.error("Failed to wait for timeline switch", e);
        throw new EventTypeUnavailableException("Event type " + eventTypeName + " is currently in maintenance, please repeat request");
    } catch (final TimeoutException e) {
        LOG.error("Failed to wait for timeline switch", e);
        throw new EventTypeUnavailableException("Event type " + eventTypeName + " is currently in maintenance, please repeat request");
    } catch (final NakadiException e) {
        LOG.error("Error deleting event type " + eventTypeName, e);
        throw new EventTypeDeletionException("Failed to delete event type " + eventTypeName);
    } finally {
        try {
            if (deletionCloser != null) {
                deletionCloser.close();
            }
        } catch (final IOException e) {
            LOG.error("Exception occurred when releasing usage of event-type", e);
        }
    }
    if (topicsToDelete != null) {
        for (final TopicRepository topicRepository : topicsToDelete.keySet()) {
            for (final String topic : topicsToDelete.get(topicRepository)) {
                try {
                    topicRepository.deleteTopic(topic);
                } catch (TopicDeletionException e) {
                    // If a timeline was marked as deleted, then the topic does not exist, and we should proceed.
                    LOG.info("Could not delete topic " + topic, e);
                }
            }
        }
    }
    nakadiKpiPublisher.publish(etLogEventType, () -> new JSONObject().put("event_type", eventTypeName).put("status", "deleted").put("category", eventType.getCategory()).put("authz", identifyAuthzState(eventType)).put("compatibility_mode", eventType.getCompatibilityMode()));
}

Example 5 with ServiceTemporarilyUnavailableException

use of org.zalando.nakadi.exceptions.runtime.ServiceTemporarilyUnavailableException in project nakadi by zalando.

the class SubscriptionService method createSubscriptionStat.

private List<SubscriptionEventTypeStats> createSubscriptionStat(final Subscription subscription) throws InconsistentStateException, ServiceTemporarilyUnavailableException {
    final List<EventType> eventTypes = subscription.getEventTypes().stream().map(Try.wrap(eventTypeRepository::findByName)).map(Try::getOrThrow).sorted(Comparator.comparing(EventType::getName)).collect(Collectors.toList());
    final List<PartitionEndStatistics> topicPartitions;
    try {
        topicPartitions = loadPartitionEndStatistics(eventTypes);
    } catch (final ServiceUnavailableException ex) {
        throw new ServiceTemporarilyUnavailableException(ex);
    }
    final ZkSubscriptionClient subscriptionClient;
    try {
        subscriptionClient = subscriptionClientFactory.createClient(subscription, "subscription." + subscription.getId() + ".stats");
    } catch (final InternalNakadiException | NoSuchEventTypeException e) {
        throw new ServiceTemporarilyUnavailableException(e);
    }
    final Optional<ZkSubscriptionNode> zkSubscriptionNode = subscriptionClient.getZkSubscriptionNodeLocked();
    return loadStats(eventTypes, zkSubscriptionNode, subscriptionClient, topicPartitions);
}