basic monitoring golang

basic-mon.go

package main

import (
	"fmt"
	"sort"
	"time"

	"github.com/shirou/gopsutil/disk"
	"github.com/shirou/gopsutil/host"
	"github.com/shirou/gopsutil/process"
)

func GetStatsD() (string, error) {
	ret := ""

	// Uptime
	uptime, err := host.Uptime()
	if err != nil {
		return ret, err
	}
	ret = ret + fmt.Sprintf("System Uptime: %v seconds\n", uptime)

	// Time
	ret = ret + fmt.Sprintf("Current Date and Time: %v\n", time.Now().Format("2006-01-02 15:04:05"))

	// Disk usage
	usage, err := disk.Usage("/")
	if err != nil {
		return ret, err
	}
	ret = ret + fmt.Sprintf("Total Disk: %v bytes\n", usage.Total)
	ret = ret + fmt.Sprintf("Used Disk: %v bytes\n", usage.Used)
	ret = ret + fmt.Sprintf("Free Disk: %v bytes\n", usage.Free)

	// Top 10 heavy-ram processes
	processes, err := process.Processes()
	if err != nil {
		return ret, err
	}

	type ProcessRAM struct {
		Pid  int32
		Name string
		RAM  uint64
	}

	var procRAMs []ProcessRAM

	for _, proc := range processes {
		memInfo, err := proc.MemoryInfo()
		if err != nil {
			continue
		}

		name, err := proc.Name()
		if err != nil {
			continue
		}

		procRAMs = append(procRAMs, ProcessRAM{
			Pid:  proc.Pid,
			Name: name,
			RAM:  memInfo.RSS,
		})
	}

	sort.Slice(procRAMs, func(i, j int) bool {
		return procRAMs[i].RAM > procRAMs[j].RAM
	})

	ret = ret + fmt.Sprintf("Top 10 RAM Consuming Processes:\n")
	for i, proc := range procRAMs {
		if i >= 10 {
			break
		}
		ret = ret + fmt.Sprintf("%d. PID: %d, Name: %s, RAM: %d bytes\n", i+1, proc.Pid, proc.Name, proc.RAM)
	}

	return ret, nil
}

func main() {
	s, err := GetStatsD()
	fmt.Println(err)
	fmt.Println(s)
}