metrics

README

Metrics component

We use Prometheus monitoring system and time series database for collecting and store metrics.

Package metrics is based on Prometheus golang client. It contains metrics collectors of entire project. Component starts http server on http://0.0.0.0:8080/metrics by default(can be changed in configuration)

If you want to add metrics in your component code, you need to describe it as global collector variable in this package. Each global collector must be registered in constructor NewMetrics()

When you creating collector, you need to fill Opts structure. You should to read this guide before choosing Opts.Name

Collector types

• Counter
• Gauge
• Summary
• Histogram

Labels

Labels is used to create query with filters. For example, when we count total number of sent packets, then we can make query with filter by packet type in report. Generally, You don't need to use Opts.ConstLabels. This field is used for labels, which not be changed in runtime(e. g. for app version).

You should create a metricVec using specific method for particular collector type.

// NetworkPacketSentTotal is total number of sent packets metric
var NetworkPacketSentTotal = prometheus.NewCounterVec(prometheus.CounterOpts{
	Name:      "packet_sent_total",
	Help:      "Total number of sent packets",
	Namespace: insolarNamespace,
	Subsystem: "network",
}, []string{"packetType"})

Using collectors in your code

Collectors are thread safe, you can manipulate with it from any goroutine.

// labeled counter usage example
metrics.NetworkPacketSentTotal.WithLabelValues(packet.Type.String()).Inc()

Documentation

Overview

Package metrics is a gateway for Prometheus monitoring system, it based on Prometheus golang client. Package contains metrics collectors descriptions of entire project. Component starts http server on http://0.0.0.0:8080/metrics by default(can be changed in configuration)

Example:

	// starts metrics server
	cfg := configuration.NewMetrics()
	m, _ := NewMetrics(cfg)
    m.Start(nil)

    // manipulate with network metrics
	NetworkMessageSentTotal.Inc()
	NetworkPacketSentTotal.WithLabelValues("ping").Add(55)

Index

• Variables
• func GetInsgorundRegistry() *prometheus.Registry
• func GetInsolarRegistry(nodeRole string) *prometheus.Registry
• func IsAddrInUse(err error) bool
• type Metrics
  • func NewMetrics(cfg configuration.Metrics, registry *prometheus.Registry, nodeRole string) *Metrics
  • func (m *Metrics) Handler() http.Handler
  • func (m *Metrics) Init(ctx context.Context) error
  • func (m *Metrics) Start(ctx context.Context) error
  • func (m *Metrics) Stop(ctx context.Context) error

Variables

var APIContractExecutionTime = prometheus.NewSummaryVec(prometheus.SummaryOpts{
	Name:       "contract_execution_time",
	Help:       "Time spent on execution contract, measured from API",
	Namespace:  insolarNamespace,
	Subsystem:  "API",
	Objectives: map[float64]float64{0.5: 0.05, 0.9: 0.01, 0.95: 0.005, 0.99: 0.001},
}, []string{"method", "success"})

var ErrBind = errors.New("Failed to bind")

ErrBind special case for Start method. We can use it for easier check in metrics creation code.

var InsgorundCallsTotal = prometheus.NewCounter(prometheus.CounterOpts{
	Name:      "call_contract_method_total",
	Help:      "Total number of calls contracts methods",
	Namespace: insgorundNamespace,
})

var InsgorundContractExecutionTime = prometheus.NewSummaryVec(prometheus.SummaryOpts{
	Name:       "contract_execution_time",
	Help:       "Time spent on execution contract",
	Namespace:  insgorundNamespace,
	Objectives: map[float64]float64{0.5: 0.05, 0.9: 0.01, 0.95: 0.005, 0.99: 0.001},
}, []string{"method"})

var NetworkConnections = prometheus.NewGauge(prometheus.GaugeOpts{
	Name:      "connections",
	Help:      "Connections count in connection pool",
	Namespace: insolarNamespace,
	Subsystem: "network",
})

NetworkConnections is current network transport connections count metric

var NetworkFutures = prometheus.NewCounterVec(prometheus.CounterOpts{
	Name:      "futures",
	Help:      "Current network transport futures count",
	Namespace: insolarNamespace,
	Subsystem: "network",
}, []string{"packetType"})

NetworkFutures is current network transport futures count metric

var NetworkPacketReceivedTotal = prometheus.NewCounterVec(prometheus.CounterOpts{
	Name:      "packet_received_total",
	Help:      "Total number of received packets",
	Namespace: insolarNamespace,
	Subsystem: "network",
}, []string{"packetType"})

NetworkPacketReceivedTotal is is total number of received packets metric

var NetworkPacketSentTotal = prometheus.NewCounterVec(prometheus.CounterOpts{
	Name:      "packet_sent_total",
	Help:      "Total number of sent packets",
	Namespace: insolarNamespace,
	Subsystem: "network",
}, []string{"packetType"})

NetworkPacketSentTotal is total number of sent packets metric

var NetworkPacketTimeoutTotal = prometheus.NewCounterVec(prometheus.CounterOpts{
	Name:      "packet_timeout_total",
	Help:      "Total number of timed out packets",
	Namespace: insolarNamespace,
	Subsystem: "network",
}, []string{"packetType"})

NetworkPacketTimeoutTotal is is total number of timed out packets metric

var NetworkRecvSize = prometheus.NewSummary(prometheus.SummaryOpts{
	Name:      "recv_bytes",
	Help:      "Received by transport",
	Namespace: insolarNamespace,
	Subsystem: "network",
})

NetworkRecvSize is total received bytes

var NetworkSentSize = prometheus.NewSummary(prometheus.SummaryOpts{
	Name:      "sent_bytes",
	Help:      "Sent by transport",
	Namespace: insolarNamespace,
	Subsystem: "network",
})

NetworkSentSize is total sent bytes

Functions

func GetInsgorundRegistry

func GetInsgorundRegistry() *prometheus.Registry

func GetInsolarRegistry

func GetInsolarRegistry(nodeRole string) *prometheus.Registry

GetInsolarRegistry creates and registers Insolar global metrics

func IsAddrInUse

func IsAddrInUse(err error) bool

IsAddrInUse checks error text for well known phrase.

Types

type Metrics

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

Metrics is a component which serve metrics data to Prometheus.

func NewMetrics

func NewMetrics(
	cfg configuration.Metrics,
	registry *prometheus.Registry,
	nodeRole string,
) *Metrics

NewMetrics creates new Metrics instance.

func (*Metrics) Handler

func (m *Metrics) Handler() http.Handler

Handler returns http handler, created on initialization stage.

func (*Metrics) Init

func (m *Metrics) Init(ctx context.Context) error

Init inits metrics instance. Creates and registers all handlers.

func (*Metrics) Start

func (m *Metrics) Start(ctx context.Context) error

Start is implementation of insolar.Component interface.

func (*Metrics) Stop

func (m *Metrics) Stop(ctx context.Context) error

Stop is implementation of insolar.Component interface.