Struct IngestHeader 

#[repr(C)]
pub struct IngestHeader {
    pub batch_id: u64,
    pub timestamp_ns: u64,
    pub record_count: u32,
    pub payload_length: u32,
    pub payload_crc: u32,
    pub topic_id: u32,
}

Zero-copy ingest header per Architecture §13.3.

#[repr(C)] ensures deterministic field layout matching the wire format. zerocopy::{FromBytes, IntoBytes} enables zero-copy casting from network buffers without per-field deserialization.

Fields

batch_id: u64

timestamp_ns: u64

record_count: u32

payload_length: u32

payload_crc: u32

topic_id: u32

Implementations

impl IngestHeader

pub const SIZE: usize = 32

pub fn new( batch_id: u64, timestamp_ns: u64, record_count: u32, payload_length: u32, payload_crc: u32, ) -> Self

pub fn with_topic( batch_id: u64, timestamp_ns: u64, record_count: u32, payload_length: u32, payload_crc: u32, topic_id: u32, ) -> Self

pub fn parse(buf: &[u8]) -> Result<Self>

Zero-copy parse: reinterpret a byte slice as an IngestHeader.

On little-endian architectures this is a simple pointer cast with no field-by-field deserialization. On big-endian it falls back to the per-field path (compile-time).

pub fn encode_into(&self, buf: &mut [u8])

Zero-copy encode: write struct bytes directly into buffer.

On little-endian architectures this is a single memcpy.

pub fn validate_payload(&self, payload: &[u8]) -> Result<()>

Trait Implementations

impl Clone for IngestHeader

fn clone(&self) -> IngestHeader

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for IngestHeader

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

Formats the value using the given formatter.

impl Default for IngestHeader

fn default() -> IngestHeader

Returns the “default value” for a type.

impl FromBytes for IngestHeader

where u64: FromBytes, u32: FromBytes,

fn read_from_bytes(source: &[u8]) -> Result<Self, SizeError<&[u8], Self>>

where Self: Sized,

Reads a copy of Self from the given source.

fn read_from_prefix( source: &[u8], ) -> Result<(Self, &[u8]), SizeError<&[u8], Self>>

where Self: Sized,

Reads a copy of Self from the prefix of the given source.

fn read_from_suffix( source: &[u8], ) -> Result<(&[u8], Self), SizeError<&[u8], Self>>

where Self: Sized,

Reads a copy of Self from the suffix of the given source.

impl FromZeros for IngestHeader

where u64: FromZeros, u32: FromZeros,

fn zero(&mut self)

Overwrites self with zeros.

fn new_zeroed() -> Self

where Self: Sized,

Creates an instance of Self from zeroed bytes.

impl IntoBytes for IngestHeader

where u64: IntoBytes, u32: IntoBytes, (): PaddingFree<Self, { _ }>,

fn as_bytes(&self) -> &[u8]

where Self: Immutable,

Gets the bytes of this value.

fn as_mut_bytes(&mut self) -> &mut [u8]

where Self: FromBytes,

Gets the bytes of this value mutably.

fn write_to(&self, dst: &mut [u8]) -> Result<(), SizeError<&Self, &mut [u8]>>

where Self: Immutable,

Writes a copy of self to dst.

fn write_to_prefix( &self, dst: &mut [u8], ) -> Result<(), SizeError<&Self, &mut [u8]>>

where Self: Immutable,

Writes a copy of self to the prefix of dst.

fn write_to_suffix( &self, dst: &mut [u8], ) -> Result<(), SizeError<&Self, &mut [u8]>>

where Self: Immutable,

Writes a copy of self to the suffix of dst.

impl TryFromBytes for IngestHeader

where u64: TryFromBytes, u32: TryFromBytes,

fn try_read_from_bytes( source: &[u8], ) -> Result<Self, ConvertError<Infallible, SizeError<&[u8], Self>, ValidityError<&[u8], Self>>>

where Self: Sized,

Attempts to read the given source as a Self.

fn try_read_from_prefix( source: &[u8], ) -> Result<(Self, &[u8]), ConvertError<Infallible, SizeError<&[u8], Self>, ValidityError<&[u8], Self>>>

where Self: Sized,

Attempts to read a Self from the prefix of the given source.

fn try_read_from_suffix( source: &[u8], ) -> Result<(&[u8], Self), ConvertError<Infallible, SizeError<&[u8], Self>, ValidityError<&[u8], Self>>>

where Self: Sized,

Attempts to read a Self from the suffix of the given source.

impl Copy for IngestHeader

impl Immutable for IngestHeader

where u64: Immutable, u32: Immutable,