Skip to content

Middleware for echo v5 to instrument all handlers as metrics

License

Notifications You must be signed in to change notification settings

datum-cloud/echo-prometheus

 
 

Folders and files

NameName
Last commit message
Last commit date

Latest commit

 

History

17 Commits
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Repository files navigation

Echo Prometheus

Middleware for echo v4 to instrument all handlers as metrics

Example of usage

With default config

package main

import (
	"net/http"

	"github.com/labstack/echo/v4"
	"github.com/prometheus/client_golang/prometheus/promhttp"
	echoPrometheus "github.com/globocom/echo-prometheus"
)

func main() {
	e := echo.New()

	e.Use(echoPrometheus.MetricsMiddleware())
	e.GET("/metrics", echo.WrapHandler(promhttp.Handler()))

	e.GET("/", func(c echo.Context) error {
		return c.String(http.StatusOK, "Hello, World!")
	})
	e.Logger.Fatal(e.Start(":1323"))
}

With custom config

package main

import (
	"net/http"

	"github.com/labstack/echo/v4"
	"github.com/prometheus/client_golang/prometheus/promhttp"
	echoPrometheus "github.com/globocom/echo-prometheus"
)

func main() {
	e := echo.New()

	var configMetrics = echoPrometheus.NewConfig()
		configMetrics.Namespace = "namespace"
		configMetrics.Buckets = []float64{
			0.0005, // 0.5ms
			0.001,  // 1ms
			0.005,  // 5ms
			0.01,   // 10ms
			0.05,   // 50ms
			0.1,    // 100ms
			0.5,    // 500ms
			1,      // 1s
			2,      // 2s
	}

	e.Use(echoPrometheus.MetricsMiddlewareWithConfig(configMetrics))
	e.GET("/metrics", echo.WrapHandler(promhttp.Handler()))

	e.GET("/", func(c echo.Context) error {
		return c.String(http.StatusOK, "Hello, World!")
	})
	e.Logger.Fatal(e.Start(":1323"))
}

Gzip middleware

A middleware skipper can be passed to avoid gzip /metrics URL:

e.Use(middleware.GzipWithConfig(middleware.GzipConfig{
  Skipper: func(c echo.Context) bool {
    return c.Path() == "/metrics"
  },
}))

Example output for metric route

# HELP echo_http_request_duration_seconds Spend time by processing a route
# TYPE echo_http_request_duration_seconds histogram
echo_http_request_duration_seconds_bucket{handler="/",method="GET",le="0.0005"} 7
echo_http_request_duration_seconds_bucket{handler="/",method="GET",le="0.001"} 7
echo_http_request_duration_seconds_bucket{handler="/",method="GET",le="0.002"} 7
echo_http_request_duration_seconds_bucket{handler="/",method="GET",le="0.005"} 7
echo_http_request_duration_seconds_bucket{handler="/",method="GET",le="0.01"} 7
echo_http_request_duration_seconds_bucket{handler="/",method="GET",le="0.02"} 7
echo_http_request_duration_seconds_bucket{handler="/",method="GET",le="0.05"} 7
echo_http_request_duration_seconds_bucket{handler="/",method="GET",le="0.1"} 7
echo_http_request_duration_seconds_bucket{handler="/",method="GET",le="0.2"} 7
echo_http_request_duration_seconds_bucket{handler="/",method="GET",le="0.5"} 7
echo_http_request_duration_seconds_bucket{handler="/",method="GET",le="1"} 7
echo_http_request_duration_seconds_bucket{handler="/",method="GET",le="2"} 7
echo_http_request_duration_seconds_bucket{handler="/",method="GET",le="5"} 7
echo_http_request_duration_seconds_bucket{handler="/",method="GET",le="+Inf"} 7
echo_http_request_duration_seconds_sum{handler="/",method="GET"} 7.645099999999999e-05
echo_http_request_duration_seconds_count{handler="/",method="GET"} 7
# HELP echo_http_requests_total Number of HTTP operations
# TYPE echo_http_requests_total counter
echo_http_requests_total{handler="/",method="GET",status="2xx"} 7

Tests

Run the tests

make test

View metrics via Grafana

We built a grafana dashboard for these metrics, lookup at https://grafana.com/grafana/dashboards/10913.

About

Middleware for echo v5 to instrument all handlers as metrics

Resources

License

Code of conduct

Security policy

Stars

Watchers

Forks

Packages

No packages published

Languages

  • Go 99.1%
  • Makefile 0.9%