Enum Error 

pub enum Error {
    Core(Error),
    Io(Error),
    Connect {
        addr: String,
        source: Error,
    },
    Broker {
        op: &'static str,
        code: i16,
        disposition: Disposition,
    },
    NoLeader {
        topic: String,
        partition: i32,
    },
    Producer(ProducerError),
    Timeout {
        op: ApiKey,
        addr: String,
    },
    Sasl(String),
    Missing(&'static str),
    ConnectionBusy {
        op: ApiKey,
        addr: String,
        in_flight: usize,
    },
}

Variants

Core(Error)

Io(Error)

Connect

Fields

addr: String

source: Error

Broker

A broker error code, with what the client should do about it. Carrying the Disposition means a caller can react without re-deriving the taxonomy — and cannot accidentally retry something fatal.

Fields

op: &'static str

code: i16

disposition: Disposition

NoLeader

The partition has no leader even after a metadata refresh — what a partition mid-election looks like. Separate from Self::Broker so a caller can back off and retry rather than treat it as fatal.

Fields

topic: String

partition: i32

Producer(ProducerError)

A misuse of the producer, caught by the state machine rather than by a broker — producing outside a transaction, to an unenrolled partition, or after being fenced.

Timeout

A request outlived its deadline. The connection is dropped with it — see Cluster::call_at.

Fields

op: ApiKey

addr: String

Sasl(String)

Authentication failed, or the broker does not offer the mechanism.

Missing(&'static str)

ConnectionBusy

A request/response call was attempted on a connection that already has requests in flight.

This is a bug in this client, surfaced rather than suffered. Kafka answers a connection’s requests in order, so a call on a busy connection reads the previous request’s response — a fetch decoded as an offset commit, or worse, a response that happens to parse. Anything pipelining deliberately uses send/recv and manages the order itself; anything else must leave the connection idle first.

Fields

op: ApiKey

addr: String

in_flight: usize

Trait Implementations

impl Debug for Error

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

Formats the value using the given formatter.

impl Display for Error

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

Formats the value using the given formatter.

impl Error for Error

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl From<Error> for Error

fn from(source: Error) -> Self

Converts to this type from the input type.

impl From<Error> for Error

fn from(source: Error) -> Self

Converts to this type from the input type.

impl From<ProducerError> for Error

fn from(source: ProducerError) -> Self

Converts to this type from the input type.