Interface Request<R extends Response>

    • Method Detail

      • id

        long id()
        Holds a unique ID for each request that is assigned automatically.
        the unique request ID.
      • response

        CompletableFuture<R> response()
        Holds the response which eventually completes.
        the future containing the response, eventually.
      • succeed

        void succeed​(R result)
        Completes this request successfully.
        result - the result to complete with.
      • fail

        void fail​(Throwable error)
        Fails this request and completes it.
        error - the error to fail this request with.
      • cancel

        void cancel​(CancellationReason reason,
                    Function<Throwable,​Throwable> exceptionTranslator)
        Cancels this request, allowing the caller to customize the exception.
        exceptionTranslator - A typical function might create a new custom exception using the argument as the cause.
      • timeoutRegistration

        void timeoutRegistration​( registration)
        Sets the timeout registration used to cancel when complete.
        registration - the registration for the timeout timer.
      • context

        RequestContext context()
        If attached, returns the context for this request.
        the request context if attached.
      • timeout

        Duration timeout()
        Returns the timeout for this request.
        the timeout for this request.
      • timeoutElapsed

        boolean timeoutElapsed()
        Returns true if the timeout elapsed.
      • completed

        boolean completed()
        Allows to check if this request is completed already.
        true if completed, failed or cancelled.
      • succeeded

        boolean succeeded()
        Allows to check if this request has been successfully completed.
        true if succeeded, false otherwise.
      • failed

        boolean failed()
        Allows to check if this request has been completed but with an exception.
        true if failed, false otherwise.
      • cancelled

        boolean cancelled()
        Allows to check if this request has been cancelled before it got a chance to be either failed or succeeded.
        true if cancelled, false otherwise.
      • cancellationReason

        CancellationReason cancellationReason()
        If the request is cancelled(), this returns the reason why.
        the cancellation reason if cancelled, null otherwise.
      • serviceType

        ServiceType serviceType()
        The service type of this request.
        the service type for this request.
      • bucket

        default String bucket()
        Returns the name of the bucket this request is scoped to, or null if not scoped to a bucket.
      • target

        default NodeIdentifier target()
        Returns the node that should service this request, or null to let the service locator decide.
      • serviceContext

        Map<String,​Object> serviceContext()
        Returns contextual information for each individual service.
        the service context.
      • retryStrategy

        RetryStrategy retryStrategy()
        The retry strategy for this particular request.
        the retry strategy for this request.
      • requestSpan

        RequestSpan requestSpan()
        Holds the internal span for this request.
        the internal span used for the request.
      • createdAt

        long createdAt()
        Holds the nanoTime when the request got created.
        the time when the request got created.
      • absoluteTimeout

        long absoluteTimeout()
        The absolute timestamp when the request should time out.
        the absolute timeout in nanoseconds.
      • idempotent

        default boolean idempotent()
        Returns if the given request is idempotent or not.

        By default, this method always returns false for data consistency reasons. Only specific idempotent operations should override this default since it impacts retry handling quite a bit. DO NOT SET THIS TO TRUE ON MUTATING OPERATIONS!

        true if idempotent.
      • operationId

        default String operationId()
        Returns a potentially non-unique identifier that is useful for tracing output.

        Note: might be null! It depends on the type of operation. It is also different from the unqiue operation ID that increments to provide additional context (i.e in query the context uuid, in kv the opaque value).

        if present, the operation id. Null otherwise.
      • name

        default String name()
        The unique name of the request, usually related to the type but not necessarily.

        The default implementation is derived from the class name (i.e. FooRequest => foo), but if that does not match up it should be overridden in the actual class.

        the name of the request type.