Struct rdkafka::message::BorrowedHeaders

pub struct BorrowedHeaders;

A zero-copy collection of Kafka message headers.

Provides a read-only access to headers owned by a Kafka consumer or producer or by an OwnedHeaders struct.

Implementations

impl BorrowedHeaders

pub fn detach(&self) -> OwnedHeaders

Clones the content of BorrowedHeaders and returns an OwnedHeaders that can outlive the consumer.

This operation requires memory allocation and can be expensive.

Trait Implementations

impl Headers for BorrowedHeaders

fn count(&self) -> usize

Returns the number of contained headers.

fn get(&self, idx: usize) -> Option<(&str, &[u8])>

Gets the specified header, where the first header corresponds to index 0. If the index is out of bounds, returns None.

fn get_as<V: FromBytes + ?Sized>(
    &self,
    idx: usize
) -> Option<(&str, Result<&V, V::Error>)>

Like Headers::get, but the value of the header will be converted to the specified type. If the conversion fails, returns an error.