metric

type Aggregation interface {
	// contains filtered or unexported methods
}

type AggregationBase2ExponentialHistogram struct {
	// MaxSize is the maximum number of buckets to use for the histogram.
	MaxSize int32
	// MaxScale is the maximum resolution scale to use for the histogram.
	//
	// MaxScale has a maximum value of 20. Using a value of 20 means the
	// maximum number of buckets that can fit within the range of a
	// signed 32-bit integer index could be used.
	//
	// MaxScale has a minimum value of -10. Using a value of -10 means only
	// two buckets will be used.
	MaxScale int32

	// NoMinMax indicates whether to not record the min and max of the
	// distribution. By default, these extrema are recorded.
	//
	// Recording these extrema for cumulative data is expected to have little
	// value, they will represent the entire life of the instrument instead of
	// just the current collection cycle. It is recommended to set this to true
	// for that type of data to avoid computing the low-value extrema.
	NoMinMax bool
}

type AggregationDefault struct{} // AggregationDefault has no parameters.

type AggregationDrop struct{} // AggregationDrop has no parameters.

type AggregationExplicitBucketHistogram struct {
	// Boundaries are the increasing bucket boundary values. Boundary values
	// define bucket upper bounds. Buckets are exclusive of their lower
	// boundary and inclusive of their upper bound (except at positive
	// infinity). A measurement is defined to fall into the greatest-numbered
	// bucket with a boundary that is greater than or equal to the
	// measurement. As an example, boundaries defined as:
	//
	// []float64{0, 5, 10, 25, 50, 75, 100, 250, 500, 1000}
	//
	// Will define these buckets:
	//
	// (-∞, 0], (0, 5.0], (5.0, 10.0], (10.0, 25.0], (25.0, 50.0],
	// (50.0, 75.0], (75.0, 100.0], (100.0, 250.0], (250.0, 500.0],
	// (500.0, 1000.0], (1000.0, +∞)
	Boundaries []float64
	// NoMinMax indicates whether to not record the min and max of the
	// distribution. By default, these extrema are recorded.
	//
	// Recording these extrema for cumulative data is expected to have little
	// value, they will represent the entire life of the instrument instead of
	// just the current collection cycle. It is recommended to set this to true
	// for that type of data to avoid computing the low-value extrema.
	NoMinMax bool
}

type AggregationLastValue struct{} // AggregationLastValue has no parameters.

type AggregationSelector func(InstrumentKind) Aggregation

type AggregationSum struct{} // AggregationSum has no parameters.

type Exporter interface {
	// Temporality returns the Temporality to use for an instrument kind.
	//
	// This method needs to be concurrent safe with itself and all the other
	// Exporter methods.
	Temporality(InstrumentKind) metricdata.Temporality

	// Aggregation returns the Aggregation to use for an instrument kind.
	//
	// This method needs to be concurrent safe with itself and all the other
	// Exporter methods.
	Aggregation(InstrumentKind) Aggregation

	// Export serializes and transmits metric data to a receiver.
	//
	// This is called synchronously, there is no concurrency safety
	// requirement. Because of this, it is critical that all timeouts and
	// cancellations of the passed context be honored.
	//
	// All retry logic must be contained in this function. The SDK does not
	// implement any retry logic. All errors returned by this function are
	// considered unrecoverable and will be reported to a configured error
	// Handler.
	//
	// The passed ResourceMetrics may be reused when the call completes. If an
	// exporter needs to hold this data after it returns, it needs to make a
	// copy.
	Export(context.Context, *metricdata.ResourceMetrics) error

	// ForceFlush flushes any metric data held by an exporter.
	//
	// The deadline or cancellation of the passed context must be honored. An
	// appropriate error should be returned in these situations.
	//
	// This method needs to be concurrent safe.
	ForceFlush(context.Context) error

	// Shutdown flushes all metric data held by an exporter and releases any
	// held computational resources.
	//
	// The deadline or cancellation of the passed context must be honored. An
	// appropriate error should be returned in these situations.
	//
	// After Shutdown is called, calls to Export will perform no operation and
	// instead will return an error indicating the shutdown state.
	//
	// This method needs to be concurrent safe.
	Shutdown(context.Context) error
}

type Instrument struct {
	// Name is the human-readable identifier of the instrument.
	Name string
	// Description describes the purpose of the instrument.
	Description string
	// Kind defines the functional group of the instrument.
	Kind InstrumentKind
	// Unit is the unit of measurement recorded by the instrument.
	Unit string
	// Scope identifies the instrumentation that created the instrument.
	Scope instrumentation.Scope
	// contains filtered or unexported fields
}

type InstrumentKind uint8

type ManualReader struct {
	// contains filtered or unexported fields
}

type ManualReaderOption interface {
	// contains filtered or unexported methods
}

type MeterProvider struct {
	embedded.MeterProvider
	// contains filtered or unexported fields
}

type Option interface {
	// contains filtered or unexported methods
}

type PeriodicReader struct {
	// contains filtered or unexported fields
}

type PeriodicReaderOption interface {
	// contains filtered or unexported methods
}

type Producer interface {

	// Produce returns aggregated metrics from an external source.
	//
	// This method should be safe to call concurrently.
	Produce(context.Context) ([]metricdata.ScopeMetrics, error)
}

type Reader interface {

	// Collect gathers and returns all metric data related to the Reader from
	// the SDK and stores it in out. An error is returned if this is called
	// after Shutdown or if out is nil.
	//
	// This method needs to be concurrent safe, and the cancellation of the
	// passed context is expected to be honored.
	Collect(ctx context.Context, rm *metricdata.ResourceMetrics) error

	// Shutdown flushes all metric measurements held in an export pipeline and releases any
	// held computational resources.
	//
	// This deadline or cancellation of the passed context are honored. An appropriate
	// error will be returned in these situations. There is no guaranteed that all
	// telemetry be flushed or all resources have been released in these
	// situations.
	//
	// After Shutdown is called, calls to Collect will perform no operation and instead will return
	// an error indicating the shutdown state.
	//
	// This method needs to be concurrent safe.
	Shutdown(context.Context) error
	// contains filtered or unexported methods
}

type ReaderOption interface {
	PeriodicReaderOption
	ManualReaderOption
}

type Stream struct {
	// Name is the human-readable identifier of the stream.
	Name string
	// Description describes the purpose of the data.
	Description string
	// Unit is the unit of measurement recorded.
	Unit string
	// Aggregation the stream uses for an instrument.
	Aggregation Aggregation
	// AttributeFilter is an attribute Filter applied to the attributes
	// recorded for an instrument's measurement. If the filter returns false
	// the attribute will not be recorded, otherwise, if it returns true, it
	// will record the attribute.
	//
	// Use NewAllowKeysFilter from "go.opentelemetry.io/otel/attribute" to
	// provide an allow-list of attribute keys here.
	AttributeFilter attribute.Filter
}

type TemporalitySelector func(InstrumentKind) metricdata.Temporality

type View func(Instrument) (Stream, bool)