• for what
  • dependInfo
• demo
• use middleware lib
  • import
  • gin server status
  • gin server debug
    • vars
    • pprof

for what

• this project used to gin api server status monitor

support check

• health
• Hardware
  • disk
  • cpu
  • ram
• debug
  • run vars
  • pprof

env

• minimum go version: go 1.18
• change go 1.18, ^1.18, 1.18.10 to new go version

libs

lib	url	version
gin	https://github.com/gin-gonic/gin	v1.9.1
gopsutil	https://github.com/shirou/gopsutil/	v3.23.5

demo

make init
make dep
# ensure right then
make exampleDebug
# and open url
# health http://127.0.0.1:38000/status/health
# pprof http://127.0.0.1:38000/debug/pprof/

make exampleStatus
# status http://127.0.0.1:38000/status/hardware/disk
# status http://127.0.0.1:38000/status/hardware/ram
# status http://127.0.0.1:38000/status/hardware/cpu
# status http://127.0.0.1:38000/status/hardware/cpu_info

make examplePprof
# pprof http://127.0.0.1:38000/debug/vars
# pprof http://127.0.0.1:38000/debug/pprof/

use middleware lib

import

# go get
go get -v github.com/bar-counter/monitor/v2

# go mod find out version
go list -mod readonly -m -versions github.com/bar-counter/monitor/v2
# all use awk to get script
echo "go mod edit -require=$(go list -m -versions github.com/bar-counter/monitor | awk '{print $1 "@" $NF}')"
# then use your want version like v2.1.0
go mod edit -require=github.com/bar-counter/monitor/v2@v2.1.0
go mod download -x

gin server status

• use lib https://github.com/shirou/gopsutil for watch system status
• see example statusdemo.go

package main

import (
	"fmt"

	"github.com/bar-counter/monitor/v2"
	"github.com/gin-gonic/gin"
)

func main() {
	r := gin.Default()
	monitorCfg := &monitor.Cfg{
		Status: true,
		//StatusPrefix: "/status",
		StatusHardware: true,
		//StatusHardwarePrefix: "/hardware",
	}
	err := monitor.Register(r, monitorCfg)
	if err != nil {
		fmt.Printf("monitor register err %v\n", err)
		return
	}
	err = r.Run(":38000")
	if err != nil {
		fmt.Printf("run err %v\n", err)
		return
	}
}

and you can use to get status of server or run make exampleStatus

curl 'http://127.0.0.1:38000/status/health' \
  -X GET

curl 'http://127.0.0.1:38000/status/hardware/disk' \
  -X GET

curl 'http://127.0.0.1:38000/status/hardware/ram' \
  -X GET

curl 'http://127.0.0.1:38000/status/hardware/cpu' \
  -X GET

curl 'http://127.0.0.1:38000/status/hardware/cpu_info' \
  -X GET

StatusPrefix default is /status you can change by your self StatusHardwarePrefix default is /hardware

gin server debug

• see example debugdemo.go

vars

package main

import (
	"fmt"

	"github.com/bar-counter/monitor/v2"
	"github.com/gin-gonic/gin"
)

func main() {
	r := gin.Default()
	monitorCfg := &monitor.Cfg{
		Status: true,
		//StatusPrefix: "/status",
		StatusHardware: true,
		//StatusHardwarePrefix: "/hardware",
		Debug: true,
		//DebugPrefix: "/debug",
		DebugMiddleware: gin.BasicAuth(gin.Accounts{
			"admin": "admin",
			"user":  "user",
		}),
	}
	err := monitor.Register(r, monitorCfg)
	if err != nil {
		fmt.Printf("monitor register err %v\n", err)
		return
	}

	err = r.Run(":38000")
	if err != nil {
		fmt.Printf("run err %v\n", err)
		return
	}
}

or run make exampleDebug because use gin.BasicAuth must add --user user:user

curl 'http://127.0.0.1:38000/debug/vars' \
 --user user:user \
 -X GET

DebugPrefix default is /debug

{
  "cgo": 6,
  "cmdline": [
    "/var/folders/79/dw7nb8rx7kgcqty_9qq2nv640000gn/T/go-build2348802398/b001/exe/debugdemo"
  ],
  "gc_pause": 0,
  "go_version": "go1.18.2",
  "goroutine": 5,
  "memstats": {
  },
  "os": "darwin",
  "os_cores": 8,
  "run_time": "8.211807521s"
}

item	doc	desc
cgo	go doc runtime.NumCgoCall
cmdline		server run cmd
cores	go doc runtime.NumCPU
gc_pause		count last gc time
goroutine	go doc runtime.NumGoroutine
memstats	go doc runtime.MemStats
os	go doc runtime.GOOS
os_cores	go doc runtime.NumCPU
run_time		count server run time

more info see go doc expvar

DebugMiddleware can use BasicAuth or other Middleware

pprof

• pprof must Debug open
• see example pprofdemo.go

package main

import (
	"fmt"

	"github.com/bar-counter/monitor/v2"
	"github.com/gin-gonic/gin"
)

func main() {
	r := gin.Default()
	monitorCfg := &monitor.Cfg{
		Status: true,
		//StatusPrefix: "/status",
		StatusHardware: true,
		//StatusHardwarePrefix: "/hardware",
		Debug: true,
		//DebugPrefix: "/debug",
		//DebugMiddleware: gin.BasicAuth(gin.Accounts{
		//	"admin": "admin",
		//	"user":  "user",
		//}),
		PProf: true,
		//PProfPrefix: "/pprof",
	}
	err := monitor.Register(r, monitorCfg)
	if err != nil {
		fmt.Printf("monitor register err %v\n", err)
		return
	}

	err = r.Run(":38000")
	if err != nil {
		fmt.Printf("run err %v\n", err)
		return
	}
}

or run make examplePprof

then see at http://127.0.0.1:38000/debug/pprof/ or use cli to

# cpu
go tool pprof http://localhost:38000/debug/pprof/profile
# mem
go tool pprof http://localhost:38000/debug/pprof/heap
# block
go tool pprof http://localhost:38000/debug/pprof/block

License