Examples with TRINO_PAGES io.trino.TrinoMediaTypes.TRINO_PAGES used on opensource projects

Example 1 with TRINO_PAGES

use of io.trino.TrinoMediaTypes.TRINO_PAGES in project trino by trinodb.

the class TaskResource method getResults.

@ResourceSecurity(INTERNAL_ONLY)
@GET
@Path("{taskId}/results/{bufferId}/{token}")
@Produces(TRINO_PAGES)
public void getResults(@PathParam("taskId") TaskId taskId, @PathParam("bufferId") OutputBufferId bufferId, @PathParam("token") long token, @HeaderParam(TRINO_MAX_SIZE) DataSize maxSize, @Suspended AsyncResponse asyncResponse) {
    requireNonNull(taskId, "taskId is null");
    requireNonNull(bufferId, "bufferId is null");
    if (injectFailure(taskManager.getTraceToken(taskId), taskId, RequestType.GET_RESULTS, asyncResponse)) {
        return;
    }
    TaskState state = taskManager.getTaskStatus(taskId).getState();
    boolean taskFailed = state == TaskState.ABORTED || state == TaskState.FAILED;
    long start = System.nanoTime();
    ListenableFuture<BufferResult> bufferResultFuture = taskManager.getTaskResults(taskId, bufferId, token, maxSize);
    Duration waitTime = randomizeWaitTime(DEFAULT_MAX_WAIT_TIME);
    bufferResultFuture = addTimeout(bufferResultFuture, () -> BufferResult.emptyResults(taskManager.getTaskInstanceId(taskId), token, false), waitTime, timeoutExecutor);
    ListenableFuture<Response> responseFuture = Futures.transform(bufferResultFuture, result -> {
        List<Slice> serializedPages = result.getSerializedPages();
        GenericEntity<?> entity = null;
        Status status;
        if (serializedPages.isEmpty()) {
            status = Status.NO_CONTENT;
        } else {
            entity = new GenericEntity<>(serializedPages, new TypeToken<List<Slice>>() {
            }.getType());
            status = Status.OK;
        }
        return Response.status(status).entity(entity).header(TRINO_TASK_INSTANCE_ID, result.getTaskInstanceId()).header(TRINO_PAGE_TOKEN, result.getToken()).header(TRINO_PAGE_NEXT_TOKEN, result.getNextToken()).header(TRINO_BUFFER_COMPLETE, result.isBufferComplete()).header(TRINO_TASK_FAILED, taskFailed).build();
    }, directExecutor());
    // For hard timeout, add an additional time to max wait for thread scheduling contention and GC
    Duration timeout = new Duration(waitTime.toMillis() + ADDITIONAL_WAIT_TIME.toMillis(), MILLISECONDS);
    bindAsyncResponse(asyncResponse, responseFuture, responseExecutor).withTimeout(timeout, Response.status(Status.NO_CONTENT).header(TRINO_TASK_INSTANCE_ID, taskManager.getTaskInstanceId(taskId)).header(TRINO_PAGE_TOKEN, token).header(TRINO_PAGE_NEXT_TOKEN, token).header(TRINO_BUFFER_COMPLETE, false).header(TRINO_TASK_FAILED, taskFailed).build());
    responseFuture.addListener(() -> readFromOutputBufferTime.add(Duration.nanosSince(start)), directExecutor());
    asyncResponse.register((CompletionCallback) throwable -> resultsRequestTime.add(Duration.nanosSince(start)));
}