Struct UsageSnapshot 

pub struct UsageSnapshot {
    pub records_read: u64,
    pub records_written: u64,
    pub bytes_read: u64,
    pub bytes_written: u64,
    pub source_roundtrips: BTreeMap<String, u64>,
    pub sink_roundtrips: BTreeMap<String, u64>,
    pub signals: Vec<CostSignal>,
    pub throttled: u64,
    pub throttle_wait_secs: f64,
    pub source_retries: BTreeMap<String, u64>,
}

The counters a run accumulated, frozen for reporting and storage.

Fields

records_read: u64

Records the source yielded.

records_written: u64

Records the sink accepted.

bytes_read: u64

Estimated serialized bytes read.

bytes_written: u64

Estimated serialized bytes written.

source_roundtrips: BTreeMap<String, u64>

Source backend round trips by op (page, get, list, …).

sink_roundtrips: BTreeMap<String, u64>

Sink backend round trips by op (insert, put, merge, …).

signals: Vec<CostSignal>

Backend-reported usage figures.

throttled: u64

Rate-limit responses (HTTP 429 and equivalents) the source received.

throttle_wait_secs: f64

Seconds the source actually slept because of those responses.

source_retries: BTreeMap<String, u64>

Source-side retries by retry class (rate_limited, http_5xx, connection, timeout).

Implementations

impl UsageSnapshot

pub fn roundtrips(&self, side: UsageSide) -> u64

Total round trips on side.

pub fn merge(&mut self, other: &UsageSnapshot)

Fold another snapshot into this one (sums; signals concatenated).

Trait Implementations

impl Clone for UsageSnapshot

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for UsageSnapshot

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

Formats the value using the given formatter.

impl Default for UsageSnapshot

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for UsageSnapshot

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl JsonSchema for UsageSnapshot

fn schema_name() -> Cow<'static, str>

The name of the generated JSON Schema.

fn schema_id() -> Cow<'static, str>

Returns a string that uniquely identifies the schema produced by this type.

fn json_schema(generator: &mut SchemaGenerator) -> Schema

Generates a JSON Schema for this type.

fn inline_schema() -> bool

Whether JSON Schemas generated for this type should be included directly in parent schemas, rather than being re-used where possible using the $ref keyword.

impl PartialEq for UsageSnapshot

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for UsageSnapshot

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for UsageSnapshot