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package zio.telemetry.opentelemetry.metrics
import zio._
import zio.telemetry.opentelemetry.metrics.internal.Instrument
/**
* Provides instruments used to record measurements which are aggregated to metrics.
*
* @see
* Instrument
* Selection Guidelines
*/
trait Meter {
/**
* Constructs a Counter instrument.
*
* @param name
* the name of the Counter. Instrument names must consist of 255 or fewer characters including alphanumeric, _, .,
* -, and start with a letter
* @param unit
* instrument units must be 63 or fewer ASCII characters
* @param description
* description is an optional free-form text provided by the author of the instrument. The API MUST treat it as an
* opaque string
*/
def counter(
name: String,
unit: Option[String] = None,
description: Option[String] = None
)(implicit trace: Trace): UIO[Counter[Long]]
/**
* Constructs a UpDownCounter instrument.
*
* @param name
* the name of the Counter. Instrument names must consist of 255 or fewer characters including alphanumeric, _, .,
* -, and start with a letter
* @param unit
* instrument units must be 63 or fewer ASCII characters
* @param description
* description is an optional free-form text provided by the author of the instrument. The API MUST treat it as an
* opaque string
*/
def upDownCounter(
name: String,
unit: Option[String] = None,
description: Option[String] = None
)(implicit trace: Trace): UIO[UpDownCounter[Long]]
/**
* Constructs a Historgram instrument.
*
* @param name
* the name of the Counter. Instrument names must consist of 255 or fewer characters including alphanumeric, _, .,
* -, and start with a letter
* @param unit
* instrument units must be 63 or fewer ASCII characters
* @param description
* description is an optional free-form text provided by the author of the instrument. The API MUST treat it as an
* opaque string
* @param boundaries
* the explicit bucket boundaries advice
*/
def histogram(
name: String,
unit: Option[String] = None,
description: Option[String] = None,
boundaries: Option[Chunk[Double]] = None
)(implicit trace: Trace): UIO[Histogram[Double]]
/**
* Builds an Asynchronous Counter instrument with the given callback.
*
* @param name
* the name of the Counter. Instrument names must consist of 255 or fewer characters including alphanumeric, _, .,
* -, and start with a letter
* @param unit
* instrument units must be 63 or fewer ASCII characters
* @param description
* description is an optional free-form text provided by the author of the instrument. The API MUST treat it as an
* opaque string
* @param callback
* callback which observes measurements when invoked
*/
def observableCounter(
name: String,
unit: Option[String] = None,
description: Option[String] = None
)(callback: ObservableMeasurement[Long] => Task[Unit])(implicit trace: Trace): RIO[Scope, Unit]
/**
* Builds an Asynchronous UpDownCounter instrument with the given callback.
*
* @param name
* the name of the Counter. Instrument names must consist of 255 or fewer characters including alphanumeric, _, .,
* -, and start with a letter
* @param unit
* instrument units must be 63 or fewer ASCII characters
* @param description
* description is an optional free-form text provided by the author of the instrument. The API MUST treat it as an
* opaque string
* @param callback
* callback which observes measurements when invoked
*/
def observableUpDownCounter(
name: String,
unit: Option[String] = None,
description: Option[String] = None
)(callback: ObservableMeasurement[Long] => Task[Unit])(implicit trace: Trace): RIO[Scope, Unit]
/**
* Builds an Asynchronous Gauge instrument with the given callback.
*
* @param name
* the name of the Counter. Instrument names must consist of 255 or fewer characters including alphanumeric, _, .,
* -, and start with a letter
* @param unit
* instrument units must be 63 or fewer ASCII characters
* @param description
* description is an optional free-form text provided by the author of the instrument. The API MUST treat it as an
* opaque string
* @param callback
* callback which observes measurements when invoked
*/
def observableGauge(
name: String,
unit: Option[String] = None,
description: Option[String] = None
)(callback: ObservableMeasurement[Double] => Task[Unit])(implicit trace: Trace): RIO[Scope, Unit]
}
object Meter {
def live: URLayer[Instrument.Builder, Meter] =
ZLayer(
for {
builder <- ZIO.service[Instrument.Builder]
} yield new Meter {
private val unsafeRuntime =
Runtime.default.unsafe
override def counter(
name: String,
unit: Option[String] = None,
description: Option[String] = None
)(implicit trace: Trace): UIO[Counter[Long]] =
ZIO.succeed(builder.counter(name, unit, description))
override def upDownCounter(
name: String,
unit: Option[String] = None,
description: Option[String] = None
)(implicit trace: Trace): UIO[UpDownCounter[Long]] =
ZIO.succeed(builder.upDownCounter(name, unit, description))
override def histogram(
name: String,
unit: Option[String] = None,
description: Option[String] = None,
boundaries: Option[Chunk[Double]] = None
)(implicit trace: Trace): UIO[Histogram[Double]] =
ZIO.succeed(builder.histogram(name, unit, description, boundaries))
override def observableCounter(
name: String,
unit: Option[String] = None,
description: Option[String] = None
)(callback: ObservableMeasurement[Long] => Task[Unit])(implicit trace: Trace): RIO[Scope, Unit] =
ZIO
.fromAutoCloseable(
ZIO.attempt {
builder.observableCounter(name, unit, description) { om =>
Unsafe.unsafe { implicit unsafe =>
unsafeRuntime.run(callback(om)).getOrThrowFiberFailure()
}
}
}
)
.unit
override def observableUpDownCounter(
name: String,
unit: Option[String] = None,
description: Option[String] = None
)(callback: ObservableMeasurement[Long] => Task[Unit])(implicit trace: Trace): RIO[Scope, Unit] =
ZIO
.fromAutoCloseable(
ZIO.attempt {
builder.observableUpDownCounter(name, unit, description) { om =>
Unsafe.unsafe { implicit unsafe =>
unsafeRuntime.run(callback(om)).getOrThrowFiberFailure()
}
}
}
)
.unit
override def observableGauge(
name: String,
unit: Option[String] = None,
description: Option[String] = None
)(callback: ObservableMeasurement[Double] => Task[Unit])(implicit trace: Trace): RIO[Scope, Unit] =
ZIO
.fromAutoCloseable(
ZIO.attempt {
builder.observableGauge(name, unit, description) { om =>
Unsafe.unsafe { implicit unsafe =>
unsafeRuntime.run(callback(om)).getOrThrowFiberFailure()
}
}
}
)
.unit
}
)
}
