Examples with ServiceUnavailableException tech.pegasys.teku.api.exceptions.ServiceUnavailableException used on opensource projects

Example 1 with ServiceUnavailableException

use of tech.pegasys.teku.api.exceptions.ServiceUnavailableException in project teku by ConsenSys.

the class PostValidatorLiveness method handle.

@OpenApi(path = ROUTE, method = HttpMethod.GET, summary = "Get Validator Liveness", tags = { TAG_EXPERIMENTAL }, requestBody = @OpenApiRequestBody(content = { @OpenApiContent(from = ValidatorLivenessRequest.class) }), description = "Requests the beacon node to indicate if a validator has been" + "    observed to be live in a given epoch. The beacon node might detect liveness by" + "    observing messages from the validator on the network, in the beacon chain," + "    from its API or from any other source. It is important to note that the" + "    values returned by the beacon node are not canonical; they are best-effort" + "    and based upon a subjective view of the network.", responses = { @OpenApiResponse(status = RES_OK, content = @OpenApiContent(from = PostValidatorLivenessResponse.class)), @OpenApiResponse(status = RES_BAD_REQUEST, description = "Invalid parameter supplied"), @OpenApiResponse(status = RES_INTERNAL_ERROR), @OpenApiResponse(status = RES_SERVICE_UNAVAILABLE, description = SERVICE_UNAVAILABLE) })
@Override
public void handle(Context ctx) throws Exception {
    if (!chainDataProvider.isStoreAvailable() || syncDataProvider.isSyncing()) {
        throw new ServiceUnavailableException();
    }
    try {
        final ValidatorLivenessRequest request = parseRequestBody(ctx.body(), ValidatorLivenessRequest.class);
        SafeFuture<Optional<PostValidatorLivenessResponse>> future = nodeDataProvider.getValidatorLiveness(request, chainDataProvider.getCurrentEpoch());
        handleOptionalResult(ctx, future, this::handleResult, this::handleError, SC_SERVICE_UNAVAILABLE);
    } catch (IllegalArgumentException ex) {
        LOG.trace("Illegal argument in PostValidatorLiveness", ex);
        ctx.status(SC_BAD_REQUEST);
        ctx.json(BadRequest.badRequest(jsonProvider, ex.getMessage()));
    }
}

Example 2 with ServiceUnavailableException

use of tech.pegasys.teku.api.exceptions.ServiceUnavailableException in project teku by ConsenSys.

the class NodeDataProvider method getValidatorLiveness.

public SafeFuture<Optional<PostValidatorLivenessResponse>> getValidatorLiveness(final ValidatorLivenessRequest request, final Optional<UInt64> maybeCurrentEpoch) {
    if (!isLivenessTrackingEnabled) {
        return SafeFuture.failedFuture(new BadRequestException("Validator liveness tracking is not enabled on this beacon node, cannot service request"));
    }
    // if no validator indices were requested, that's a bad request.
    if (request.indices.isEmpty()) {
        return SafeFuture.failedFuture(new BadRequestException("No validator indices posted in validator liveness request"));
    }
    if (maybeCurrentEpoch.isEmpty()) {
        return SafeFuture.failedFuture(new ServiceUnavailableException());
    }
    final UInt64 currentEpoch = maybeCurrentEpoch.get();
    if (currentEpoch.isLessThan(request.epoch)) {
        return SafeFuture.failedFuture(new BadRequestException(String.format("Current node epoch %s, cannot check liveness for a future epoch %s", currentEpoch, request.epoch)));
    } else if (currentEpoch.minusMinZero(TRACKED_EPOCHS).isGreaterThan(request.epoch)) {
        return SafeFuture.failedFuture(new BadRequestException(String.format("Current node epoch %s, cannot check liveness for an epoch (%s) more than %d in the past", currentEpoch, request.epoch, TRACKED_EPOCHS)));
    }
    return activeValidatorChannel.validatorsLiveAtEpoch(request.indices, request.epoch).thenApply(validatorLivenessMap -> {
        final List<ValidatorLivenessAtEpoch> livenessAtEpochs = new ArrayList<>();
        validatorLivenessMap.forEach((validatorIndex, liveness) -> livenessAtEpochs.add(new ValidatorLivenessAtEpoch(validatorIndex, request.epoch, liveness)));
        return Optional.of(new PostValidatorLivenessResponse(livenessAtEpochs));
    });
}