metrics

Documentation

Index

• Variables
• func InstrumentHandler(handler http.Handler, handlerName string) http.Handler

Variables

var (

	// FunctionExecutionsNum is a counter for number of function executions done in this runtime instance.
	// # of series = 1
	FunctionExecutionsNum = prometheus.NewCounter(
		prometheus.CounterOpts{
			Name: "runtime_function_executions_num",
			Help: "Number of function executions",
		},
	)
	// FunctionExecutionDurationMilliseconds is a histogram of latencies for wasm function executions of user plugins.
	// # of series = # of functions x 49
	FunctionExecutionDurationMilliseconds = prometheus.NewHistogramVec(
		prometheus.HistogramOpts{
			Name: "runtime_function_execution_duration_milliseconds",
			Help: "A histogram of latencies for wasm function executions of user plugins",
			Buckets: []float64{
				10, 15, 20, 30, 40, 60, 80, 100, 125, 150, 175, 200, 225, 250, 275, 300,
				350, 400, 450, 500, 550, 600, 650, 700, 750, 800, 850, 900, 950, 1000,
				1100, 1200, 1300, 1400, 1500, 1600, 1700, 1800, 1900, 2000,
				2500, 3000, 3500, 4000, 5000, 10000, 20000, 40000, 60000,
			},
		},
		[]string{"function_name"},
	)

	// FunctionExecutionDurationMillisecondsSummary is a summary of latencies for wasm function executions of user plugins.
	FunctionExecutionDurationMillisecondsSummary = prometheus.NewSummaryVec(
		prometheus.SummaryOpts{
			Name:       "runtime_function_execution_duration_milliseconds_summary",
			Help:       "A summary of latencies for wasm function executions of user plugins",
			Objectives: map[float64]float64{0.5: 0.05, 0.75: 0.025, 0.9: 0.01, 0.99: 0.001},
		},
		[]string{"function_name"},
	)

	DroppedInferencesNum = prometheus.NewCounter(
		prometheus.CounterOpts{
			Name: "runtime_dropped_inferences_num",
			Help: "Number of dropped inference requests",
		},
	)
)

var (

	// MetricsHandler is the handler for the /metrics endpoint.
	MetricsHandler = promhttp.HandlerFor(runtimePromRegistry, promhttp.HandlerOpts{})
)

Functions

func InstrumentHandler

func InstrumentHandler(handler http.Handler, handlerName string) http.Handler

InstrumentHandler wraps the provided http.Handler with metrics instrumentation.