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package virtbuf
// mostly just functions related to making STDOUT
// more readable by us humans
// also function shortcuts the do limited formatting (haha, who remembers COBOL?)
// so reporting tables of the status of what droplets and hypervisors
// are in text columns and rows that can be easily read in a terminal
import (
"errors"
"fmt"
"net/http"
"strings"
"time"
"go.wit.com/log"
)
func oldGetDurationStamp(t time.Time) string {
// Get the current time
currentTime := time.Now()
// Calculate the duration between t current time
duration := currentTime.Sub(t)
return FormatDuration(duration)
}
// This isn't for the marketing department
// so this isn't going to use 'MiB' and 'GiB'
func HumanFormatBytes(b int64) string {
if b < 2000 {
return fmt.Sprintf("%d B", b)
}
kb := int(b / 1024)
if kb < 2000 {
return fmt.Sprintf("%d KB", kb)
}
mb := int(b / (1024 * 1024))
if mb < 2000 {
return fmt.Sprintf("%d MB", mb)
}
gb := int(b / (1024 * 1024 * 1024))
if gb < 2000 {
return fmt.Sprintf("%d GB", gb)
}
tb := int(b / (1024 * 1024 * 1024 * 1024))
return fmt.Sprintf("%d TB", tb)
}
func FormatDuration(d time.Duration) string {
result := ""
// check if it's more than a year
years := int(d.Hours()) / (24 * 365)
if years > 0 {
result += fmt.Sprintf("%dy", years)
return result
}
// check if it's more than a day
days := int(d.Hours()) / 24
if days > 0 {
result += fmt.Sprintf("%dd", days)
return result
}
// check if it's more than an hour
hours := int(d.Hours()) % 24
if hours > 0 {
result += fmt.Sprintf("%dh", hours)
return result
}
// check if it's more than a minute
minutes := int(d.Minutes()) % 60
if minutes > 0 {
result += fmt.Sprintf("%dm", minutes)
return result
}
// check if it's more than a second
seconds := int(d.Seconds()) % 60
if seconds > 0 {
result += fmt.Sprintf("%ds", seconds)
return result
}
// report in milliseconds
ms := int(d.Milliseconds())
if ms > 100 {
// todo: print .3s, etc ?
return fmt.Sprintf("%1.2fs", seconds/1000)
}
if ms > 0 {
result += fmt.Sprintf("%dms", ms)
}
// totally not necessary but wth
var t time.Duration
t = time.Duration(ms) * time.Millisecond
nanos := d - t
result += fmt.Sprintf("%dnanos", nanos)
return result
}
func (d *Droplet) SprintHeader() string {
if d.Current == nil {
d.Current = new(Current)
}
header := fmt.Sprintf("%-3.3s %-9.9s %-20.20s", d.Current.State, d.Current.Hypervisor, d.Hostname)
switch d.Current.State {
case DropletState_ON:
var dur string
if d.Current.OnSince != nil {
dur = ""
} else {
t := time.Since(d.Current.OnSince.AsTime()) // time since 'OFF'
dur = FormatDuration(t)
}
header += fmt.Sprintf(" (on :%3s)", dur)
case DropletState_OFF:
var dur string
if d.Current.OffSince != nil {
dur = ""
} else {
t := time.Since(d.Current.OffSince.AsTime()) // time since 'OFF'
dur = FormatDuration(t)
}
header += fmt.Sprintf(" (off:%3s)", dur)
default:
header += fmt.Sprintf(" (?? :%3s)", "")
}
return header
}
func (d *Droplet) SprintDumpHeader() string {
var macs []string
for _, n := range d.Networks {
macs = append(macs, n.Mac)
}
// this line in golang could replace 80 lines of COBOL
header := fmt.Sprintf("%-4.4s%20s %-8s", d.Current.State, strings.Join(macs, " "), d.Current.Hypervisor)
if d.Current == nil {
d.Current = new(Current)
}
switch d.Current.State {
case DropletState_ON:
var dur string
if d.Current.OnSince != nil {
dur = ""
} else {
t := time.Since(d.Current.OnSince.AsTime()) // time since 'ON'
dur = FormatDuration(t)
}
header += fmt.Sprintf(" (on :%3s)", dur)
case DropletState_OFF:
var dur string
if d.Current.OffSince != nil {
dur = ""
} else {
t := time.Since(d.Current.OffSince.AsTime()) // time since 'OFF'
dur = FormatDuration(t)
}
header += fmt.Sprintf(" (off:%3s)", dur)
default:
header += fmt.Sprintf(" (?? :%3s)", "")
}
return header
}
func (d *Droplet) DumpDroplet(w http.ResponseWriter, r *http.Request) (string, error) {
if d == nil {
reason := "DumpDroplet() got d == nil"
log.Warn(reason)
fmt.Fprintln(w, reason)
return "", errors.New(reason)
}
t := d.FormatTEXT()
log.Info(t)
fmt.Fprintln(w, t)
return t, nil
}
func (c *Cluster) DumpDroplet(w http.ResponseWriter, r *http.Request) (string, error) {
hostname := r.URL.Query().Get("hostname")
d := c.FindDropletByName(hostname)
if d == nil {
result := "can not find droplet hostname=" + hostname
log.Info(result)
fmt.Fprintln(w, result)
return result, errors.New(result)
}
return d.DumpDroplet(w, r)
}
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