Skip to main content

FetchWriteOp

Enum FetchWriteOp 

Source
pub enum FetchWriteOp {
    Inline(Bytes),
    Records(RecordsPayload),
}
Expand description

One ordered segment of a FetchResponse write-plan.

The broker drains these in order: Inline bytes are written from userspace; a Records segment carries the partition’s records payload, which the broker resolves to a vectored write_all (any payload kind) or — on Linux plaintext for RecordsPayload::FileRegions — a sendfile.

The Records op holds the RecordsPayload itself (a cheap refcounted clone for Raw/FileRegions) rather than pre-encoded bytes so the broker can choose its drain strategy. The records length prefix (INT32 for non-flex, unsigned-varint for flex) is part of the preceding Inline segment, exactly as the wire format requires; Records is the raw payload region only.

Variants§

§

Inline(Bytes)

Userspace bytes — response header fragment, partition metadata, records length prefixes, tagged-field trailers, array prefixes, etc.

§

Records(RecordsPayload)

A partition’s records payload region (no length prefix). Drained by the broker via vectored write or sendfile.

Implementations§

Source§

impl FetchWriteOp

Source

pub fn len(&self) -> usize

Byte length this op contributes to the frame body.

Source

pub fn is_empty(&self) -> bool

true when this op contributes zero bytes.

Trait Implementations§

Source§

impl Clone for FetchWriteOp

Source§

fn clone(&self) -> FetchWriteOp

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
Source§

impl Debug for FetchWriteOp

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<ST, DT> CastableFrom<ST, Initialized, Initialized> for DT
where ST: ?Sized, DT: ?Sized,

Source§

impl<ST, DT> CastableFrom<ST, Uninit, Uninit> for DT
where ST: ?Sized, DT: ?Sized,

Source§

impl<T> CloneToUninit for T
where T: Clone,

Source§

unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
Source§

impl<T> From<T> for T

Source§

fn from(t: T) -> T

Returns the argument unchanged.

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> Read<Exclusive, BecauseExclusive> for T
where T: ?Sized,

Source§

impl<T> ToOwned for T
where T: Clone,

Source§

type Owned = T

The resulting type after obtaining ownership.
Source§

fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
Source§

fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
Source§

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

Source§

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>,

Source§

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.