Struct mz_service::grpc::GrpcClient

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pub struct GrpcClient<G>{ /* private fields */ }
Expand description

A client to a remote dataflow server using gRPC and protobuf based communication.

The client opens a connection using the proto client stubs that are generated by tonic from a service definition. When the client is connected, it will call automatically the only RPC defined in the service description, encapsulated by the BidiProtoClient trait. This trait bound is not on the Client type parameter here, but it IS on the impl blocks. Bidirectional protobuf RPC sets up two streams that persist after the RPC has returned: A Request (Command) stream (for us, backed by a unbounded mpsc queue) going from this instance to the server and a response stream coming back (represented directly as a Streaming<Response> instance). The recv and send functions interact with the two mpsc channels or the streaming instance respectively.

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impl<G> GrpcClient<G>

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pub async fn connect( addr: String, version: Version, metrics: G::STATS, params: &GrpcClientParameters ) -> Result<Self, Error>

Connects to the server at the given address, announcing the specified client version.

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pub async fn connect_partitioned<C, R>( dests: Vec<(String, G::STATS)>, version: Version, params: &GrpcClientParameters ) -> Result<Partitioned<Self, C, R>, Error>
where (C, R): Partitionable<C, R>,

Like GrpcClient::connect, but for multiple partitioned servers.

Trait Implementations§

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impl<G> Debug for GrpcClient<G>
where G: ProtoServiceTypes + Debug, G::PC: Debug, G::PR: Debug,

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

Formats the value using the given formatter. Read more
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impl<G, C, R> GenericClient<C, R> for GrpcClient<G>
where C: RustType<G::PC> + Send + Sync + 'static, R: RustType<G::PR> + Send + Sync + 'static, G: ProtoServiceTypes,

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fn send<'life0, 'async_trait>( &'life0 mut self, cmd: C ) -> Pin<Box<dyn Future<Output = Result<(), Error>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Sends a command to the dataflow server. Read more
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fn recv<'life0, 'async_trait>( &'life0 mut self ) -> Pin<Box<dyn Future<Output = Result<Option<R>, Error>> + Send + 'async_trait>>
where Self: 'async_trait, 'life0: 'async_trait,

Receives the next response from the dataflow server. Read more
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fn as_stream<'a>( &'a mut self ) -> Pin<Box<dyn Stream<Item = Result<R, Error>> + Send + 'a>>
where R: Send + 'a,

Returns an adapter that treats the client as a stream. Read more

Auto Trait Implementations§

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impl<G> !RefUnwindSafe for GrpcClient<G>

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impl<G> Send for GrpcClient<G>

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impl<G> !Sync for GrpcClient<G>

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impl<G> Unpin for GrpcClient<G>

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impl<G> !UnwindSafe for GrpcClient<G>

Blanket Implementations§

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

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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

Mutably borrows from an owned value. Read more
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impl<T, U> CastInto<U> for T
where U: CastFrom<T>,

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fn cast_into(self) -> U

Performs the cast.
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> FutureExt for T

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

Attaches the provided Context to this type, returning a WithContext wrapper. Read more
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fn with_current_context(self) -> WithContext<Self>

Attaches the current Context to this type, returning a WithContext wrapper. Read more
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impl<T> Instrument for T

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

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

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

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impl<T> IntoRequest<T> for T

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fn into_request(self) -> Request<T>

Wrap the input message T in a tonic::Request
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impl<Unshared, Shared> IntoShared<Shared> for Unshared
where Shared: FromUnshared<Unshared>,

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fn into_shared(self) -> Shared

Creates a shared type from an unshared type.
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impl<T, U> OverrideFrom<Option<&T>> for U
where U: OverrideFrom<T>,

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fn override_from(self, layer: &Option<&T>) -> U

Override the configuration represented by Self with values from the given layer.
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impl<T> Pointable for T

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const ALIGN: usize = _

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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impl<P, R> ProtoType<R> for P
where R: RustType<P>,

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impl<T> PushInto<Vec<T>> for T

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fn push_into(self, target: &mut Vec<T>)

Push self into the target container.
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impl<T> Same for T

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type Output = T

Should always be Self
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<V, T> VZip<V> for T
where V: MultiLane<T>,

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fn vzip(self) -> V

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impl<T> WithSubscriber for T

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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
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fn with_current_subscriber(self) -> WithDispatch<Self>

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