Struct mz_txn_wal::operator::DataSubscribe

source ·
pub struct DataSubscribe {
    pub(crate) as_of: u64,
    pub(crate) worker: Worker<Thread>,
    data: ProbeHandle<u64>,
    txns: ProbeHandle<u64>,
    capture: Receiver<Event<u64, Vec<(String, u64, i64)>>>,
    output: Vec<(String, u64, i64)>,
    _tokens: Vec<PressOnDropButton>,
}
Expand description

A helper for subscribing to a data shard using the timely operators.

This could instead be a wrapper around a Subscribe, but it’s only used in tests and maelstrom, so do it by wrapping the timely operators to get additional coverage. For the same reason, hardcode the K, V, T, D types.

Fields§

§as_of: u64§worker: Worker<Thread>§data: ProbeHandle<u64>§txns: ProbeHandle<u64>§capture: Receiver<Event<u64, Vec<(String, u64, i64)>>>§output: Vec<(String, u64, i64)>§_tokens: Vec<PressOnDropButton>

Implementations§

source§

impl DataSubscribe

source

pub fn new( name: &str, client: PersistClient, txns_id: ShardId, data_id: ShardId, as_of: u64, until: Antichain<u64>, use_global_txn_cache: bool, ) -> Self

Creates a new DataSubscribe.

source

pub fn progress(&self) -> u64

Returns the exclusive progress of the dataflow.

source

pub fn step(&mut self)

Steps the dataflow, capturing output.

source

pub(crate) fn capture_output(&mut self)

source

pub fn output(&self) -> &Vec<(String, u64, i64)>

Returns captured output.

Trait Implementations§

source§

impl Debug for DataSubscribe

source§

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more

Auto Trait Implementations§

Blanket Implementations§

source§

impl<T> Any for T
where T: 'static + ?Sized,

source§

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
source§

impl<T> Borrow<T> for T
where T: ?Sized,

source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
source§

impl<T> BorrowMut<T> for T
where T: ?Sized,

source§

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
source§

impl<T, U> CastInto<U> for T
where U: CastFrom<T>,

source§

fn cast_into(self) -> U

Performs the cast.
source§

impl<T> From<T> for T

source§

fn from(t: T) -> T

Returns the argument unchanged.

source§

impl<T> FutureExt for T

source§

fn with_context(self, otel_cx: Context) -> WithContext<Self>

Attaches the provided Context to this type, returning a WithContext wrapper. Read more
source§

fn with_current_context(self) -> WithContext<Self>

Attaches the current Context to this type, returning a WithContext wrapper. Read more
source§

impl<T> Instrument for T

source§

fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
source§

fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
source§

impl<T, U> Into<U> for T
where U: From<T>,

source§

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

source§

impl<T> IntoRequest<T> for T

source§

fn into_request(self) -> Request<T>

Wrap the input message T in a tonic::Request
source§

impl<Unshared, Shared> IntoShared<Shared> for Unshared
where Shared: FromUnshared<Unshared>,

source§

fn into_shared(self) -> Shared

Creates a shared type from an unshared type.
source§

impl<T> Pointable for T

source§

const ALIGN: usize = _

The alignment of pointer.
§

type Init = T

The type for initializers.
source§

unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
source§

unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
source§

unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
source§

unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
source§

impl<P, R> ProtoType<R> for P
where R: RustType<P>,

source§

impl<T> Same for T

§

type Output = T

Should always be Self
source§

impl<'a, S, T> Semigroup<&'a S> for T
where T: Semigroup<S>,

source§

fn plus_equals(&mut self, rhs: &&'a S)

The method of std::ops::AddAssign, for types that do not implement AddAssign.
source§

impl<T, U> TryFrom<U> for T
where U: Into<T>,

§

type Error = Infallible

The type returned in the event of a conversion error.
source§

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
source§

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

§

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
source§

impl<V, T> VZip<V> for T
where V: MultiLane<T>,

source§

fn vzip(self) -> V

source§

impl<T> WithSubscriber for T

source§

fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
source§

fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more