prometheus

type Bucket struct {
	// UpperBound is the upper bound of the bucket.
	// The lower bound of the bucket is the largest UpperBound within other Histogram Buckets that
	// is smaller than this bucket's UpperBound.
	// The bucket with the smallest UpperBound within a Histogram implicitly has -Inf as lower bound.
	// This should be set to +Inf to mark the "last" bucket.
	UpperBound Number `json:"le"`

	// Samples is the number of samples in the bucket.
	// Note: When exported to Prometheus, they are exported cumulatively, i.e. the count of samples
	// exported in Bucket i is actually sum(histogram.Buckets[j].Samples for 0 <= j <= i).
	Samples uint64 `json:"n,omitempty"`
}

type Data struct {
	// Metric is the metric for which the value is being reported.
	Metric *Metric `json:"metric"`

	// Labels is a key-value pair representing the labels set on this metric.
	// This may be merged with other labels during export.
	Labels map[string]string `json:"labels,omitempty"`

	// Number is used for all numerical types.
	Number *Number `json:"val,omitempty"`

	// Histogram is used for histogram-typed metrics.
	HistogramValue *Histogram `json:"histogram,omitempty"`
}

type ExportOptions struct {
	// CommentHeader is prepended as a comment before any metric data is exported.
	CommentHeader string

	// MetricsWritten memoizes written metric preambles (help/type comments)
	// by metric name.
	// If specified, this map can be used to avoid duplicate preambles across multiple snapshots.
	// Note that this map is modified in-place during the writing process.
	MetricsWritten map[string]bool
}

type Histogram struct {
	// Total is the sum of sample values across all buckets.
	Total Number `json:"total"`
	// Buckets contains per-bucket data.
	// A distribution with n finite-boundary buckets should have n+2 entries here.
	// The 0th entry is the underflow bucket (i.e. the one with -inf as lower bound),
	// and the last aka (n+1)th entry is the overflow bucket (i.e. the one with +inf as upper bound).
	Buckets []Bucket `json:"buckets,omitempty"`
}

type Metric struct {
	// Name is the Prometheus metric name.
	Name string `json:"name"`

	// Type is the type of the metric.
	Type Type `json:"type"`

	// Help is an optional helpful string explaining what the metric is about.
	Help string `json:"help"`
}

type Number struct {
	// Float is the float value of this number.
	// Mutually exclusive with Int.
	Float float64 `json:"float,omitempty"`

	// Int is the integer value of this number.
	// Mutually exclusive with Float.
	Int int64 `json:"int,omitempty"`
}

type Snapshot struct {
	// When is the timestamp at which the snapshot was taken.
	// Note that Prometheus ultimately encodes timestamps as millisecond-precision int64s from epoch.
	When time.Time `json:"when,omitempty"`

	// Data is the whole snapshot data.
	// Each Data must be a unique combination of (Metric, Labels) within a Snapshot.
	Data []*Data `json:"data,omitempty"`
}

type SnapshotExportOptions struct {
	// ExporterPrefix is prepended to all metric names.
	ExporterPrefix string

	// ExtraLabels is added as labels for all metric values.
	ExtraLabels map[string]string
}

type Type int

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