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Add ttop example

This commit is contained in:
gizak 2015-10-21 11:11:08 -04:00
parent 9ec1539ccc
commit e62b592964
1 changed files with 47 additions and 47 deletions
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94
example/ttop.go
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@ -3,33 +3,35 @@
package main
import (
"fmt"
"bufio"
"os"
"errors"
"fmt"
"io"
"os"
"regexp"
"strings"
"runtime"
"sort"
"strconv"
"strings"
"time"
"errors"
"runtime"
"github.com/marigs/termui"
"github.com/gizak/termui"
"github.com/gizak/termui/extra"
)
const statFilePath = "/proc/stat"
const meminfoFilePath = "/proc/meminfo"
type CpuStat struct {
user float32
nice float32
system float32
idle float32
user float32
nice float32
system float32
idle float32
}
type CpusStats struct {
stat map[string]CpuStat
proc map[string]CpuStat
stat map[string]CpuStat
proc map[string]CpuStat
}
func NewCpusStats(s map[string]CpuStat) *CpusStats {
@ -45,17 +47,17 @@ func (cs *CpusStats) String() (ret string) {
func subCpuStat(m CpuStat, s CpuStat) CpuStat {
return CpuStat{user: m.user - s.user,
nice: m.nice - s.nice,
system: m.system - s.system,
idle: m.idle - s.idle}
nice: m.nice - s.nice,
system: m.system - s.system,
idle: m.idle - s.idle}
}
func procCpuStat(c CpuStat) CpuStat {
sum := c.user + c.nice + c.system + c.idle
return CpuStat{user: c.user/sum*100,
nice: c.nice/sum*100,
system: c.system/sum*100,
idle: c.idle/sum*100}
return CpuStat{user: c.user / sum * 100,
nice: c.nice / sum * 100,
system: c.system / sum * 100,
idle: c.idle / sum * 100}
}
func (cs *CpusStats) tick(ns map[string]CpuStat) {
@ -80,7 +82,7 @@ func (eip *errIntParser) parse(s string) (ret int64) {
type LineProcessor interface {
process(string) error
finalize() interface {}
finalize() interface{}
}
type CpuLineProcessor struct {
@ -98,9 +100,9 @@ func (clp *CpuLineProcessor) process(line string) (err error) {
}
parser := errIntParser{}
cs := CpuStat{user: float32(parser.parse(tab[1])),
nice: float32(parser.parse(tab[2])),
system: float32(parser.parse(tab[3])),
idle: float32(parser.parse(tab[4]))}
nice: float32(parser.parse(tab[2])),
system: float32(parser.parse(tab[3])),
idle: float32(parser.parse(tab[4]))}
clp.m[tab[0]] = cs
err = parser.err
if err != nil {
@ -110,13 +112,13 @@ func (clp *CpuLineProcessor) process(line string) (err error) {
return
}
func (clp *CpuLineProcessor) finalize() interface {} {
func (clp *CpuLineProcessor) finalize() interface{} {
return clp.m
}
type MemStat struct {
total int64
free int64
total int64
free int64
}
func (ms MemStat) String() (ret string) {
@ -149,11 +151,11 @@ func (ms *MemStat) process(line string) (err error) {
return
}
func (ms *MemStat) finalize() interface {} {
func (ms *MemStat) finalize() interface{} {
return *ms
}
func processFileLines(filePath string, lp LineProcessor) (ret interface {}, err error) {
func processFileLines(filePath string, lp LineProcessor) (ret interface{}, err error) {
var statFile *os.File
statFile, err = os.Open(filePath)
if err != nil {
@ -184,19 +186,19 @@ func processFileLines(filePath string, lp LineProcessor) (ret interface {}, err
}
func getCpusStatsMap() (m map[string]CpuStat, err error) {
var aux interface {}
var aux interface{}
aux, err = processFileLines(statFilePath, &CpuLineProcessor{m: make(map[string]CpuStat)})
return aux.(map[string]CpuStat), err
}
func getMemStats() (ms MemStat, err error) {
var aux interface {}
var aux interface{}
aux, err = processFileLines(meminfoFilePath, &MemStat{})
return aux.(MemStat), err
}
type CpuTabElems struct {
GMap map[string]*termui.Gauge
GMap map[string]*termui.Gauge
LChart *termui.LineChart
}
@ -208,17 +210,16 @@ func NewCpuTabElems(width int) *CpuTabElems {
lc.Mode = "dot"
lc.Border.Label = "CPU"
return &CpuTabElems{GMap: make(map[string]*termui.Gauge),
LChart: lc}
LChart: lc}
}
func (cte *CpuTabElems) AddGauge(key string, Y int, width int) *termui.Gauge {
cte.GMap[key] = termui.NewGauge()
cte.GMap[key].Width = width
cte.GMap[key].Height = 3
cte.GMap[key].Y = Y
cte.GMap[key].Border.Label = key
cte.GMap[key].Percent = 0//int(val.user + val.nice + val.system)
cte.GMap[key].Percent = 0 //int(val.user + val.nice + val.system)
return cte.GMap[key]
}
@ -235,7 +236,7 @@ func (cte *CpuTabElems) Update(cs CpusStats) {
}
type MemTabElems struct {
Gauge *termui.Gauge
Gauge *termui.Gauge
SLines *termui.Sparklines
}
@ -263,7 +264,7 @@ func (mte *MemTabElems) Update(ms MemStat) {
copy(mte.SLines.Lines[0].Data[1:], mte.SLines.Lines[0].Data[0:])
mte.SLines.Lines[0].Data[0] = used
if len(mte.SLines.Lines[0].Data) > mte.SLines.Width-2 {
mte.SLines.Lines[0].Data = mte.SLines.Lines[0].Data[0:mte.SLines.Width-2]
mte.SLines.Lines[0].Data = mte.SLines.Lines[0].Data[0 : mte.SLines.Width-2]
}
}
@ -271,11 +272,11 @@ func main() {
if runtime.GOOS != "linux" {
panic("Currently works only on Linux")
}
err := termui.Init()
if err != nil {
err := termui.Init()
if err != nil {
panic(err)
}
defer termui.Close()
defer termui.Close()
termWidth := 70
@ -287,13 +288,13 @@ func main() {
header.HasBorder = false
header.TextBgColor = termui.ColorBlue
tabCpu := termui.NewTab("CPU")
tabMem := termui.NewTab("MEM")
tabCpu := extra.NewTab("CPU")
tabMem := extra.NewTab("MEM")
tabpane := termui.NewTabpane()
tabpane := extra.NewTabpane()
tabpane.Y = 1
tabpane.Width = 30
tabpane.HasBorder = false
tabpane.Width = 30
tabpane.HasBorder = false
cs, errcs := getCpusStatsMap()
cpusStats := NewCpusStats(cs)
@ -327,9 +328,9 @@ func main() {
tabMem.AddBlocks(memTabElems.Gauge)
tabMem.AddBlocks(memTabElems.SLines)
tabpane.SetTabs(*tabCpu, *tabMem)
tabpane.SetTabs(*tabCpu, *tabMem)
termui.Render(header, tabpane)
termui.Render(header, tabpane)
evt := termui.EventCh()
for {
@ -365,4 +366,3 @@ func main() {
}
}
}