> This page is for NeMo Relay, version dev.
> For other versions, use one of these documentation indexes:
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> - dev: https://docs.nvidia.com/nemo/relay/dev/llms.txt
> - v0.11.1: https://docs.nvidia.com/nemo/relay/v0.11.1/llms.txt
> - v0.10.4: https://docs.nvidia.com/nemo/relay/v0.10.4/llms.txt
> - v0.9.4: https://docs.nvidia.com/nemo/relay/v0.9.4/llms.txt
> - v0.8.4: https://docs.nvidia.com/nemo/relay/v0.8.4/llms.txt
> - v0.7.3: https://docs.nvidia.com/nemo/relay/v0.7.3/llms.txt

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# Struct Emit Metric Event Params

> Builder parameters for `metric`.

Generated from `cargo doc --no-deps -p nemo-relay-builtins -p nemo-relay-diagnostics -p nemo-relay-logging -p nemo-relay-plugin-host -p nemo-relay-codecs -p nemo-relay -p nemo-relay-runtime -p nemo-relay-model-pricing -p nemo-relay-resource-metrics -p nemo-relay-observability -p nemo-relay-adaptive -p nemo-relay-pii-redaction -p nemo-relay-ffi -p nemo-relay-types -p nemo-relay-plugin -p nemo-relay-worker-proto -p nemo-relay-worker`.

<pre />

Builder parameters for [`metric`](/reference/api/rust-library-reference/nemo-relay/scope/fn-metric).

## Fields

### `name: &'a str`

Mark name to emit for the metric recording operations.

### `measurements: Vec<MetricMeasurement>`

Metric measurements recorded atomically by downstream metric exporters.

### `parent: Option<&'a ScopeHandle>`

Optional explicit parent scope.

### `metadata: Option<Value>`

Optional JSON metadata recorded on the emitted event.

### `timestamp: Option<DateTime<Utc>>`

Optional timestamp recorded on the emitted metric mark.

## Implementations

### `impl<'a> EmitMetricEventParams<'a>`

<pre />

#### `builder`

<pre />

Create a builder for building `EmitMetricEventParams`. On the builder, call `.name(...)`, `.measurements(...)`, `.parent(...)`(optional), `.metadata(...)`(optional), `.timestamp(...)`(optional) to set the values of the fields. Finally, call `.build()` to create the instance of `EmitMetricEventParams`.