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) -> ReadMetrics

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<(), Error>

Formats the value using the given formatter.

impl Default for ReadMetrics

fn default() -> ReadMetrics

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for ReadMetrics

fn deserialize<__D>( __deserializer: __D, ) -> Result<ReadMetrics, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

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 Serialize for ReadMetrics

fn serialize<__S>( &self, __serializer: __S, ) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for ReadMetrics