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Version: v2.x

Monitor

Monitor middleware for Fiber that reports server metrics, inspired by express-status-monitor

caution

Monitor is still in beta, API might change in the future!

Signatures

func New() fiber.Handler

Examples

Import the middleware package and assign it to a route.

package main

import (
"log"

"github.com/gofiber/fiber/v2"
"github.com/gofiber/fiber/v2/middleware/monitor"
)

func main() {
app := fiber.New()

app.Get("/metrics", monitor.New(monitor.Config{Title: "MyService Metrics Page"}))

log.Fatal(app.Listen(":3000"))
}

You can also access the API endpoint with curl -X GET -H "Accept: application/json" http://localhost:3000/metrics which returns:

{"pid":{ "cpu":0.4568381746582226, "ram":20516864,   "conns":3 },
"os": { "cpu":8.759124087593099, "ram":3997155328, "conns":44,
"total_ram":8245489664, "load_avg":0.51 }}

Config

// Config defines the config for middleware.
type Config struct {
// Metrics page title
//
// Optional. Default: "Fiber Monitor"
Title string

// Refresh period
//
// Optional. Default: 3 seconds
Refresh time.Duration

// Whether the service should expose only the monitoring API.
//
// Optional. Default: false
APIOnly bool

// Next defines a function to skip this middleware when returned true.
//
// Optional. Default: nil
Next func(c *fiber.Ctx) bool

// Custom HTML Code to Head Section(Before End)
//
// Optional. Default: empty
CustomHead string

// FontURL for specify font resource path or URL . also you can use relative path
//
// Optional. Default: https://fonts.googleapis.com/css2?family=Roboto:wght@400;900&display=swap

FontURL string
// ChartJsURL for specify ChartJS library path or URL . also you can use relative path
//
// Optional. Default: https://cdn.jsdelivr.net/npm/chart.js@2.9/dist/Chart.bundle.min.js

ChartJsURL string

}

Default Config

var ConfigDefault = Config{
Title: "Fiber Monitor",
Refresh: 3 * time.Second,
APIOnly: false,
Next: nil,
CustomHead:"",
FontURL:"https://fonts.googleapis.com/css2?family=Roboto:wght@400;900&display=swap",
ChartJsURL:"https://cdn.jsdelivr.net/npm/chart.js@2.9/dist/Chart.bundle.min.js"

}