Struct ReadMetrics 

pub struct ReadMetrics {
    pub count: u64,
    pub backlog: Option<u64>,
    pub pending: Option<Microseconds>,
    pub rate: Option<f64>,
}

Metrics for reading from a topic (subscription/consumer).

Fields

count: u64

Number of messages successfully read.

backlog: Option<u64>

Number of messages waiting to be read (backlog/lag).

pending: Option<Microseconds>

How long the consumer has been waiting for a message.

If set, indicates the consumer is blocked waiting for messages. This helps identify slow producers or idle consumers.

rate: Option<f64>

Messages read per second (computed over a window).

Implementations

impl ReadMetrics

pub fn new(count: u64) -> Self

Create new read metrics with a count.

pub fn builder() -> ReadMetricsBuilder

Create a builder for read metrics.

pub fn is_healthy(&self, max_backlog: u64, max_pending: Microseconds) -> bool

Check if this read stream appears healthy.

Returns false if there’s a significant backlog or long pending time.

Trait Implementations

impl Clone for ReadMetrics

fn clone(&self) -> ReadMetrics

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ReadMetrics

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

Formats the value using the given formatter.

impl Default for ReadMetrics

fn default() -> ReadMetrics

Returns the “default value” for a type.

impl PartialEq for ReadMetrics

fn eq(&self, other: &ReadMetrics) -> 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 StructuralPartialEq for ReadMetrics