Enum HotPathError 

#[repr(u16)]
pub enum HotPathError {
    LateEvent = 1,
    StateKeyMissing = 2,
    Backpressure = 3,
    SerializationOverflow = 4,
    SchemaMismatch = 5,
    AggregateStateCorruption = 6,
    QueueFull = 7,
    ChannelClosed = 8,
}

Ring 0 error — no heap allocation, no formatting on construction.

Only formatted when actually displayed (which happens outside Ring 0). Uses Copy and repr(u16) for zero-cost error reporting via counters.

Variants

LateEvent = 1

Event arrived after watermark — dropped.

StateKeyMissing = 2

State store key not found.

Backpressure = 3

Downstream backpressure — event buffered.

SerializationOverflow = 4

Serialization buffer overflow.

SchemaMismatch = 5

Record batch schema does not match expected.

AggregateStateCorruption = 6

Aggregate state corruption detected.

QueueFull = 7

Queue is full — cannot push event.

ChannelClosed = 8

Channel is closed/disconnected.

Implementations

impl HotPathError

pub const fn message(self) -> &'static str

Returns a static error message. Cost: one match. No allocation.

pub const fn code(self) -> u16

Numeric code for metrics counters. Zero-cost.

pub const fn ldb_code(self) -> &'static str

Returns the LDB-NNNN error code string for this hot path error.

Trait Implementations

impl Clone for HotPathError

fn clone(&self) -> HotPathError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for HotPathError

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

Formats the value using the given formatter.

impl Display for HotPathError

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

Formats the value using the given formatter.

impl Error for HotPathError

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 PartialEq for HotPathError

fn eq(&self, other: &HotPathError) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for HotPathError

impl Eq for HotPathError

impl StructuralPartialEq for HotPathError