Struct mz_storage::source::SourceMessage

source · [−]

pub struct SourceMessage<Key, Value, Diff> {
    pub partition: PartitionId,
    pub offset: MzOffset,
    pub upstream_time_millis: Option<i64>,
    pub key: Key,
    pub value: Value,
    pub headers: Option<Vec<(String, Option<Vec<u8>>)>>,
    pub specific_diff: Diff,
}

Expand description

Source-agnostic wrapper for messages. Each source must implement a conversion to Message.

Fields

partition: PartitionId

Partition from which this message originates

offset: MzOffset

Materialize offset of the message (1-indexed)

upstream_time_millis: Option<i64>

The time that an external system first observed the message

Milliseconds since the unix epoch

key: Key

The message key

value: Value

The message value

headers: Option<Vec<(String, Option<Vec<u8>>)>>

Headers, if the source is configured to pass them along. If it is, but there are none, it passes Some([])

specific_diff: Diff

Allow sources to optionally output a specific differential diff value. Defaults to +1.

Only supported with SourceEnvelope::None

Trait Implementations

impl Debug for SourceMessage<(), Option<Vec<u8>>, ()>

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

Formats the value using the given formatter. Read more

impl Debug for SourceMessage<Option<Vec<u8>>, Option<Vec<u8>>, ()>

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

Formats the value using the given formatter. Read more

Auto Trait Implementations

impl<Key, Value, Diff> RefUnwindSafe for SourceMessage<Key, Value, Diff> where
    Diff: RefUnwindSafe,
    Key: RefUnwindSafe,
    Value: RefUnwindSafe,

impl<Key, Value, Diff> Send for SourceMessage<Key, Value, Diff> where
    Diff: Send,
    Key: Send,
    Value: Send,

impl<Key, Value, Diff> Sync for SourceMessage<Key, Value, Diff> where
    Diff: Sync,
    Key: Sync,
    Value: Sync,

impl<Key, Value, Diff> Unpin for SourceMessage<Key, Value, Diff> where
    Diff: Unpin,
    Key: Unpin,
    Value: Unpin,

impl<Key, Value, Diff> UnwindSafe for SourceMessage<Key, Value, Diff> where
    Diff: UnwindSafe,
    Key: UnwindSafe,
    Value: UnwindSafe,

Blanket Implementations

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

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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

const: unstable · source

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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

const: unstable · source

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

Mutably borrows from an owned value. Read more

impl<T> From<T> for T

const: unstable · source

fn from(t: T) -> T

Returns the argument unchanged.

impl<T> FutureExt for T

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

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

fn with_current_context(self) -> WithContext<Self>

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

impl<T> Instrument for T

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

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

fn in_current_span(self) -> Instrumented<Self>

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

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

const: unstable · 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.

impl<T> IntoRequest<T> for T

fn into_request(self) -> Request<T>

Wrap the input message T in a tonic::Request

impl<T> Pointable for T

const ALIGN: usize = mem::align_of::()

The alignment of pointer.

type Init = T

The type for initializers.

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

Initializes a with the given initializer. Read more

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

Dereferences the given pointer. Read more

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

Mutably dereferences the given pointer. Read more

unsafe fn drop(ptr: usize)

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

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

fn into_rust(self) -> Result<R, TryFromProtoError>

See RustType::from_proto.

fn from_rust(rust: &R) -> P

See RustType::into_proto.

impl<T> Same<T> for T

type Output = T

Should always be Self

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

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

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

Performs the conversion.

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.

const: unstable · source

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

Performs the conversion.

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

fn vzip(self) -> V

impl<T> WithSubscriber for T

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

fn with_current_subscriber(self) -> WithDispatch<Self>

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