mapper

type ActionType string

type CacheMetrics struct {
	CacheLength    prometheus.Gauge
	CacheGetsTotal prometheus.Counter
	CacheHitsTotal prometheus.Counter
}

type HistogramOptions struct {
	Buckets                     []float64 `yaml:"buckets"`
	NativeHistogramBucketFactor float64   `yaml:"native_histogram_bucket_factor"`
	NativeHistogramMaxBuckets   uint32    `yaml:"native_histogram_max_buckets"`
}

type MapperConfigDefaults struct {
	ObserverType        ObserverType     `yaml:"observer_type"`
	MatchType           MatchType        `yaml:"match_type"`
	GlobDisableOrdering bool             `yaml:"glob_disable_ordering"`
	Ttl                 time.Duration    `yaml:"ttl"`
	SummaryOptions      SummaryOptions   `yaml:"summary_options"`
	HistogramOptions    HistogramOptions `yaml:"histogram_options"`
}

type MatchType string

type MaybeFloat64 struct {
	Set bool
	Val float64
}

type MetricMapper struct {
	Registerer prometheus.Registerer
	Defaults   MapperConfigDefaults `yaml:"defaults"`
	Mappings   []MetricMapping      `yaml:"mappings"`
	FSM        *fsm.FSM

	MappingsCount prometheus.Gauge

	Logger *slog.Logger
	// contains filtered or unexported fields
}

type MetricMapperCache interface {
	// Get a cached result
	Get(metricKey string) (interface{}, bool)
	// Add a statsd MetricMapperResult to the cache
	Add(metricKey string, result interface{}) // Add an item to the cache
	// Reset clears the cache for config reloads
	Reset()
}

type MetricMapperCacheResult struct {
	Mapping *MetricMapping
	Matched bool
	Labels  prometheus.Labels
}

type MetricMapping struct {
	Match string `yaml:"match"`
	Name  string `yaml:"name"`

	Labels      prometheus.Labels `yaml:"labels"`
	HonorLabels bool              `yaml:"honor_labels"`

	ObserverType     ObserverType      `yaml:"observer_type"`
	TimerType        ObserverType      `yaml:"timer_type,omitempty"` // DEPRECATED - field only present to preserve backwards compatibility in configs. Always empty
	LegacyBuckets    []float64         `yaml:"buckets"`
	LegacyQuantiles  []MetricObjective `yaml:"quantiles"`
	MatchType        MatchType         `yaml:"match_type"`
	HelpText         string            `yaml:"help"`
	Action           ActionType        `yaml:"action"`
	MatchMetricType  MetricType        `yaml:"match_metric_type"`
	Ttl              time.Duration     `yaml:"ttl"`
	SummaryOptions   *SummaryOptions   `yaml:"summary_options"`
	HistogramOptions *HistogramOptions `yaml:"histogram_options"`
	Scale            MaybeFloat64      `yaml:"scale"`
	// contains filtered or unexported fields
}

type MetricObjective struct {
	Quantile float64 `yaml:"quantile"`
	Error    float64 `yaml:"error"`
}

type MetricType string

type ObserverType string

type SummaryOptions struct {
	Quantiles  []MetricObjective `yaml:"quantiles"`
	MaxAge     time.Duration     `yaml:"max_age"`
	AgeBuckets uint32            `yaml:"age_buckets"`
	BufCap     uint32            `yaml:"buf_cap"`
}