func plotLine(xy plotter.XYs) (image.Image, error) {
p, err := plot.New()
if err != nil {
return nil, err
}
p.HideAxes()
p.BackgroundColor = &color.RGBA{0, 0, 0, 255}
//s, err := NewSparkLines(xy)
s, err := plotter.NewLine(xy)
if err != nil {
return nil, err
}
s.Color = &color.RGBA{0, 255, 0, 128}
p.Add(s)
// Draw the plot to an in-memory image.
// _, rows, _ := terminal.GetSize(0)
charWidth := optCharWidth
charHeight := optCharHeight
//width := cols * charWidth
height := optRows * charHeight
img := image.NewRGBA(image.Rect(0, 0, 5+(len(xy)*charWidth), height))
canvas := vgimg.NewImage(img)
da := plot.MakeDrawArea(canvas)
p.Draw(da)
return img, nil
}
func main() {
rand.Seed(int64(0))
p, err := plot.New()
if err != nil {
panic(err)
}
p.Title.Text = "Plotutil example"
p.X.Label.Text = "X"
p.Y.Label.Text = "Y"
err = plotutil.AddLinePoints(p,
"First", randomPoints(15))
if err != nil {
panic(err)
}
cnvs, err := vgximg.New(4*96, 4*96, "Example")
if err != nil {
panic(err)
}
p.Draw(plot.MakeDrawArea(cnvs))
cnvs.Paint()
time.Sleep(5 * time.Second)
err = plotutil.AddLinePoints(p,
"Second", randomPoints(15),
"Third", randomPoints(15))
if err != nil {
panic(err)
}
p.Draw(plot.MakeDrawArea(cnvs))
cnvs.Paint()
time.Sleep(10 * time.Second)
// Save the plot to a PNG file.
// if err := p.Save(4, 4, "points.png"); err != nil {
// panic(err)
// }
}
// drawPlots draws the plots to an image.
func drawPlots(img draw.Image) {
c := vgimg.NewImage(img)
da := plot.MakeDrawArea(c)
textAreaSize := vg.Points(12)
da.Min.Y += textAreaSize
da.Size.Y -= textAreaSize
left := da
left.Size.X /= 2
ps[0].plot.Draw(left)
ps[0].dataArea = ps[0].plot.DataDrawArea(left)
right := da
right.Min.X = left.Min.X + left.Size.X
right.Size.X /= 2
ps[1].plot.Draw(right)
ps[1].dataArea = ps[1].plot.DataDrawArea(right)
}
// Report builds up a plot of the response times of the requests
// in SVG format and writes it to out
func (r *TimingsPlotReporter) Report(out io.Writer) error {
timestamps := make([]time.Time, 0)
timings := make([]time.Duration, 0)
for e := r.responses.Front(); e != nil; e = e.Next() {
r := e.Value.(*result)
timestamps = append(timestamps, r.timestamp)
timings = append(timings, r.timing)
}
p, err := plot.New()
if err != nil {
return err
}
pts := make(plotter.XYs, len(timestamps))
for i := 0; i < len(pts); i++ {
pts[i].X = timestamps[i].Sub(timestamps[0]).Seconds()
pts[i].Y = timings[i].Seconds() * 1000
}
line, err := plotter.NewLine(pts)
if err != nil {
return err
}
line.Color = plotutil.Color(1)
p.Add(line)
p.X.Padding = vg.Length(3.0)
p.X.Label.Text = "Time elapsed"
p.Y.Padding = vg.Length(3.0)
p.Y.Label.Text = "Latency (ms)"
w, h := vg.Millimeters(float64(len(timestamps))), vg.Centimeters(12.0)
canvas := vgsvg.New(w, h)
p.Draw(plot.MakeDrawArea(canvas))
_, err = canvas.WriteTo(out)
return err
}
func drawPng(b *bytes.Buffer, p *plot.Plot, width, height float64) {
w, h := vg.Inches(width), vg.Inches(height)
c := vgimg.PngCanvas{Canvas: vgimg.New(w, h)}
p.Draw(plot.MakeDrawArea(c))
c.WriteTo(b)
}
func boxplot(path string, sets []set) error {
var (
fiveEnds = make([]plotter.Values, len(sets))
threeEnds = make([]plotter.Values, len(sets))
err error
ln int
)
for i := range sets {
fiveEnds[i], err = plotter.CopyValues(&normalised{vals: sets[i].fiveEnd})
if err != nil {
return err
}
threeEnds[i], err = plotter.CopyValues(&normalised{vals: sets[i].threeEnd})
if err != nil {
return err
}
if i == 0 {
ln = fiveEnds[i].Len()
}
if fiveEnds[i].Len() != threeEnds[i].Len() || fiveEnds[i].Len() != ln {
return errors.New("missing values")
}
}
font, err := vg.MakeFont("Helvetica", 10)
if err != nil {
return err
}
titleFont, err := vg.MakeFont("Helvetica", 12)
if err != nil {
return err
}
style := plot.TextStyle{Color: color.Gray{0}, Font: font}
p, err := plot.New()
if err != nil {
return err
}
p.Title.Text = titles[filter]
p.Title.TextStyle = plot.TextStyle{Color: color.Gray{0}, Font: titleFont}
p.X.Label.Text = "Length Offset"
p.Y.Label.Text = "Relative Frequency"
p.X.Label.TextStyle = style
p.Y.Label.TextStyle = style
p.X.Tick.Label = style
p.Y.Tick.Label = style
p.Legend.TextStyle = style
type boxPair struct{ five, three *plotter.BoxPlot }
var boxes []boxPair
for i := 0; i < ln; i++ {
fiveEnd := make(plotter.Values, len(sets))
threeEnd := make(plotter.Values, len(sets))
for j := range sets {
fiveEnd[j] = fiveEnds[j][i]
threeEnd[j] = threeEnds[j][i]
}
boxFivePrime, err := plotter.NewBoxPlot(1, float64(i), fiveEnd) // A non-zero width is required to prevent the creation failing.
if err != nil {
return err
}
boxFivePrime.MedianStyle.Width = 0.5
boxFivePrime.BoxStyle.Width = 0.75
boxFivePrime.BoxStyle.Color = plotutil.Color(0)
boxThreePrime, err := plotter.NewBoxPlot(1, float64(i), threeEnd) // A non-zero width is required to prevent the creation failing.
if err != nil {
return err
}
boxThreePrime.MedianStyle.Width = 0.5
boxThreePrime.BoxStyle.Width = 0.75
boxThreePrime.BoxStyle.Color = plotutil.Color(1)
boxes = append(boxes, boxPair{boxFivePrime, boxThreePrime})
p.Add(boxFivePrime, boxThreePrime)
}
p.Legend.Add("5'-end", &plotter.BarChart{Color: plotutil.Color(0)})
p.Legend.Add("3'-end", &plotter.BarChart{Color: plotutil.Color(1)})
p.Legend.Top = true
p.NominalX(func() []string {
n := make([]string, ln)
for i := 0; i < ln; i++ {
if v := i - maxLength; v%5 == 0 {
n[i] = fmt.Sprint(v)
}
}
return n
}()...)
p.X.Width = 0.5
p.X.Tick.Width = 0.5
p.X.Tick.Length = 8
p.Add(&plotter.Grid{Vertical: plotter.DefaultGridLineStyle})
c := vgsvg.New(vg.Centimeters(19), vg.Centimeters(10))
da := plot.MakeDrawArea(c)
trX, _ := p.Transforms(&da)
w := ((trX(float64(2*maxLength)) - trX(float64(0))) / vg.Length(2*maxLength)) / 3
for _, b := range boxes {
b.five.Width = w
b.five.Offset = -w / 2
b.three.Width = w
b.three.Offset = w / 2
}
p.Draw(da)
f, err := os.Create(decorate(path, "boxplot.svg", filter))
if err != nil {
return err
}
defer f.Close()
_, err = c.WriteTo(f)
return err
}
func barchart(path string, data set) error {
font, err := vg.MakeFont("Helvetica", 10)
if err != nil {
return err
}
titleFont, err := vg.MakeFont("Helvetica", 12)
if err != nil {
return err
}
style := plot.TextStyle{Color: color.Gray{0}, Font: font}
p, err := plot.New()
if err != nil {
return err
}
p.Title.Text = titles[filter]
p.Title.TextStyle = plot.TextStyle{Color: color.Gray{0}, Font: titleFont}
p.X.Label.Text = "Length Offset"
p.Y.Label.Text = "Relative Frequency"
p.X.Label.TextStyle = style
p.Y.Label.TextStyle = style
p.X.Tick.Label = style
p.Y.Tick.Label = style
p.Legend.TextStyle = style
barsFivePrime, err := plotter.NewBarChart(&normalised{vals: data.fiveEnd}, 1) // A non-zero width is required to prevent the creation failing.
if err != nil {
return err
}
barsFivePrime.LineStyle.Width = vg.Length(0)
barsFivePrime.Color = plotutil.Color(0)
barsThreePrime, err := plotter.NewBarChart(&normalised{vals: data.threeEnd}, 1) // A non-zero width is required to prevent the creation failing.
if err != nil {
return err
}
barsThreePrime.LineStyle.Width = vg.Length(0)
barsThreePrime.Color = plotutil.Color(1)
p.Add(barsFivePrime, barsThreePrime)
p.Legend.Add("5'-end", barsFivePrime)
p.Legend.Add("3'-end", barsThreePrime)
p.Legend.Top = true
p.NominalX(func() []string {
n := make([]string, len(data.fiveEnd))
for i := range data.fiveEnd {
if v := i - maxLength; v%5 == 0 {
n[i] = fmt.Sprint(v)
}
}
return n
}()...)
c := vgsvg.New(vg.Centimeters(19), vg.Centimeters(10))
da := plot.MakeDrawArea(c)
trX, _ := p.Transforms(&da)
w := ((trX(float64(2*maxLength)) - trX(float64(0))) / vg.Length(2*maxLength)) / 3
barsFivePrime.Width = w
barsFivePrime.Offset = -w / 2
barsThreePrime.Width = w
barsThreePrime.Offset = w / 2
p.Draw(da)
f, err := os.Create(decorate(path, "barchart.svg", filter))
if err != nil {
return err
}
defer f.Close()
_, err = c.WriteTo(f)
return err
}
func HandleStats(process string, db *mgo.Database, w http.ResponseWriter, r *http.Request) error {
r.ParseForm()
amount := 2
chartwidth := 800
chartheight := 600
if r.Form.Get("amount") != "" {
pamount, err := strconv.ParseInt(r.Form.Get("amount"), 10, 16)
if err == nil {
amount = int(pamount)
}
}
if r.Form.Get("chartwidth") != "" {
pchartwidth, err := strconv.ParseInt(r.Form.Get("chartwidth"), 10, 16)
if err == nil {
chartwidth = int(pchartwidth)
}
}
if r.Form.Get("chartheight") != "" {
pchartheight, err := strconv.ParseInt(r.Form.Get("chartheight"), 10, 16)
if err == nil {
chartheight = int(pchartheight)
}
}
if chartwidth < 40 {
chartwidth = 40
}
if chartheight < 40 {
chartheight = 40
}
q := &info.StatsQuery{
Process: process,
Data: info.SplitParams(r.Form.Get("data")),
Period: r.Form.Get("period"),
Filters: make(map[string]string),
Groups: info.SplitParams(r.Form.Get("group")),
Amount: amount,
App: r.Form.Get("app"),
}
output := r.Form.Get("output") // json, chart
// filters
for fname, _ := range r.Form {
if strings.HasPrefix(fname, "f_") {
q.Filters[strings.TrimPrefix(fname, "f_")] = r.Form.Get(fname)
}
}
res, err := info.QueryStats(db, q)
if err != nil {
return err
}
if output == "chart" {
// output chart
p, err := plot.New()
if err != nil {
return err
}
p.Title.Text = fmt.Sprintf("Chart %s - %s", r.Form.Get("data"), q.Period)
p.X.Label.Text = fmt.Sprintf("Day (%s to %s)", res.StartDate.String(), res.EndDate.String())
//p.X.Tick.Marker = plot.ConstantTicks(res.Ticks())
for didx, ditem := range q.Data {
if resinfo, ok := res.Result.(*info.InfoResult); ok {
resinfo.SetPlotItem(ditem)
err = InfoAddLinePoints(p, didx, ditem, resinfo)
if err != nil {
return err
}
} else if resgroup, ok := res.Result.(*info.InfoResultGroup); ok {
for rgidx, rg := range resgroup.Group {
rg.SetPlotItem(ditem)
err = InfoAddLinePoints(p, didx*len(resgroup.Group)+rgidx, ditem+" - "+rg.GroupId, rg)
if err != nil {
return err
}
}
}
}
w.Header().Add("Content-Type", "image/png")
width := vg.Length(chartwidth)
height := vg.Length(chartheight)
c := vgimg.PngCanvas{vgimg.New(width, height)}
p.Draw(plot.MakeDrawArea(c))
c.WriteTo(w)
} else if output == "table" || output == "atable" {
w.Header().Add("Content-Type", "text/html; charset=utf-8")
w.Write([]byte("<table border=\"1\">"))
for _, ditem := range q.Data {
w.Write([]byte("<tr>"))
w.Write([]byte(fmt.Sprintf("<td><b>%s</b></td>", html.EscapeString(ditem))))
if resinfo, ok := res.Result.(*info.InfoResult); ok {
resinfo.SetPlotItem(ditem)
for ridx, rdata := range resinfo.List {
var dvalue string
if output == "atable" {
_, dd := resinfo.XY(ridx)
if dd != 0 {
dvalue = fmt.Sprintf("%.1f", dd)
} else {
dvalue = "0"
}
} else {
dvalue = fmt.Sprintf("%v", rdata[ditem])
}
if dvalue == "0" {
dvalue = "-"
}
w.Write([]byte(fmt.Sprintf("<td align=\"center\">%s</td>", html.EscapeString(dvalue))))
}
w.Write([]byte("</tr>"))
} else if resgroup, ok := res.Result.(*info.InfoResultGroup); ok {
w.Write([]byte("</tr>"))
for _, rg := range resgroup.Group {
w.Write([]byte(fmt.Sprintf("<tr><td>%s</td>", rg.GroupId)))
rg.SetPlotItem(ditem)
for ridx, rdata := range rg.List {
var dvalue string
if output == "atable" {
_, dd := rg.XY(ridx)
if dd != 0 {
dvalue = fmt.Sprintf("%.1f", dd)
} else {
dvalue = "0"
}
} else {
dvalue = fmt.Sprintf("%v", rdata[ditem])
}
if dvalue == "0" {
dvalue = "-"
}
w.Write([]byte(fmt.Sprintf("<td align=\"center\">%s</td>", html.EscapeString(dvalue))))
}
w.Write([]byte("</tr>"))
}
}
}
w.Write([]byte("</table>"))
} else {
// output json data
stenc, err := json.Marshal(InfoResponse{ErrorCode: 0, Data: res.Result})
if err != nil {
return fmt.Errorf("Error encoding json data: %s", err)
}
w.Header().Add("Content-Type", "application/json; charset=utf-8")
w.Write(stenc)
}
return nil
}
func RunServer(config *Config) {
// manually load fonts from resource
for _, fontasset := range AssetNames() {
if strings.HasPrefix(fontasset, "res/fonts/") {
fontname := strings.TrimSuffix(path.Base(fontasset), path.Ext(fontasset))
fontbytes, err := Asset(fontasset)
if err != nil {
panic(err)
}
fontreader := bytes.NewReader(fontbytes)
vg.LoadFont(fontname, fontreader)
}
}
// create memory caches
homeCache := cache.New(10*time.Minute, 5*time.Minute)
categoryCache := cache.New(30*time.Minute, 30*time.Minute)
detailCache := cache.New(15*time.Minute, 10*time.Minute)
initialCheck := func(w http.ResponseWriter, r *http.Request) bool {
// clear cache if requested
nocache := r.Form.Get("nocache")
if nocache == "1" {
homeCache.Flush()
categoryCache.Flush()
detailCache.Flush()
}
return true
}
http.HandleFunc("/favicon.ico", func(w http.ResponseWriter, r *http.Request) {
http.Error(w, "Not found", 404)
})
http.HandleFunc("/favicon.png", func(w http.ResponseWriter, r *http.Request) {
http.Error(w, "Not found", 404)
})
http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
//config.Logger.Printf("Connection: %s\n", r.URL.String())
var err error
r.ParseForm()
if !initialCheck(w, r) {
return
}
csession := config.Session.Clone()
defer csession.Close()
cat := r.Form.Get("category")
chart := r.Form.Get("chart")
p_page := r.Form.Get("pg")
page := 1
if p_page != "" {
t_page, err := strconv.ParseInt(p_page, 10, 32)
if err != nil {
http.Error(w, err.Error(), 500)
return
}
page = int(t_page)
}
if page < 1 {
page = 1
}
i := fstopinfo.NewInfo(config.Logger, csession)
i.Database = config.Database
// load categories
var c fstopinfo.FSCategoryList
catcache, catfound := categoryCache.Get("category")
if catfound {
c = catcache.(fstopinfo.FSCategoryList)
}
if c == nil {
c, err = i.Categories()
if err != nil {
http.Error(w, err.Error(), 500)
return
}
if c != nil {
categoryCache.Set("category", c, 0)
}
}
if c == nil {
http.Error(w, "Could not load categories", 500)
return
}
// load home
var d fstopimp.FSTopStatsList
var dcache interface{}
var dfound bool
var dname string
if cat == "" {
dname = "index"
} else {
// check if category exists
if !c.Exists(cat) {
http.Error(w, "Category not found", 404)
return
}
dname = cat
}
dcache, dfound = homeCache.Get(dname)
if dfound {
d = dcache.(fstopimp.FSTopStatsList)
}
// data not on cache, load
if d == nil {
if cat == "" {
d, err = i.Top(config.TopId)
} else {
d, err = i.TopCategory(config.TopId, cat)
}
if err != nil {
http.Error(w, err.Error(), 500)
return
}
if len(d) > 0 {
homeCache.Set(dname, d, 0)
}
}
pagecount := d.PageCount(config.PageSize)
d = d.Paged(page, config.PageSize)
w.Header().Add("Content-Type", "text/html; charset=utf-8")
var body *bytes.Buffer = new(bytes.Buffer)
tmpldata := map[string]interface{}{
"Title": config.Title,
"page": page,
"categories": c,
}
fmt.Fprintln(body, "<table class=\"main\">")
fmt.Fprintln(body, "<tr><th>Chart</th><th>Title</th><th width=\"8%\">Added</th><th width=\"5%\">Score</th><th width=\"5%\">Count</th><th width=\"5%\">Comm.</th></tr>")
for _, ii := range d {
fmt.Fprintf(body, "<tr>\n")
if chart == "" {
fmt.Fprintf(body, "<td><img style=\"height: 107px;\" src=\"/chart?id=%s&size=short\"></td>",
ii.Id)
}
fmt.Fprintf(body, "<td><a href=\"%s\">%s</a> <a href=\"/view?id=%s\">[data]</a> <a href=\"/chart?id=%s\">[chart]</a></td>"+
"<td align=\"center\" style=\"%s\">%s</td>"+
"<td align=\"right\">%d</td><td align=\"center\">%d</td><td align=\"center\">%d</td>\n",
ii.Link, ii.Title, ii.Id, ii.Id,
StyleAddDate(ii.Last.AddDate), FormatAddDate(ii.Last.AddDate), ii.Score, ii.Count, ii.Last.Comments)
fmt.Fprintf(body, "</tr>\n")
if chart == "1" {
fmt.Fprintf(body, "<tr><td colspan=\"5\" align=\"center\"><img src=\"/chart?id=%s&size=small\"/></td></tr>\n", ii.Id)
}
}
fmt.Fprintln(body, "</table>")
pageparams := url.Values{}
if cat != "" {
pageparams.Add("category", cat)
}
if page > 1 {
pageparams.Set("pg", "1")
tmpldata["page_first"] = fmt.Sprintf("/?%s", pageparams.Encode())
}
if page > 1 {
pageparams.Set("pg", strconv.Itoa(page-1))
tmpldata["page_prev"] = fmt.Sprintf("/?%s", pageparams.Encode())
}
if len(d) > 0 && page < pagecount {
pageparams.Set("pg", strconv.Itoa(page+1))
tmpldata["page_next"] = fmt.Sprintf("/?%s", pageparams.Encode())
}
if page != pagecount {
pageparams.Set("pg", strconv.Itoa(pagecount))
tmpldata["page_last"] = fmt.Sprintf("/?%s", pageparams.Encode())
}
tmpl := LoadTemplates("index")
tmpldata["Body"] = template.HTML(body.String())
err = tmpl.ExecuteTemplate(w, "index", tmpldata)
if err != nil {
http.Error(w, "Error processing template", 500)
return
}
})
http.HandleFunc("/view", func(w http.ResponseWriter, r *http.Request) {
r.ParseForm()
if !initialCheck(w, r) {
return
}
csession := config.Session.Clone()
defer csession.Close()
w.Header().Add("Content-Type", "text/html; charset=utf-8")
id := r.Form.Get("id")
if id == "" {
http.Error(w, "ID not sent", 500)
return
}
i := fstopinfo.NewInfo(config.Logger, csession)
i.Database = config.Database
var d []*fstopinfo.FSInfoHistory
var err error
dcache, found := detailCache.Get(id)
if found {
d = dcache.([]*fstopinfo.FSInfoHistory)
}
if d == nil {
d, err = i.History(id, config.HistoryDays)
if err != nil {
http.Error(w, err.Error(), 500)
return
}
if d != nil {
detailCache.Set(id, d, 0)
}
}
if d == nil {
http.Error(w, "Not found", 500)
return
}
var body *bytes.Buffer = new(bytes.Buffer)
fmt.Fprintln(body, "<table class=\"main\" border=\"1\">")
fmt.Fprintln(body, "<tr><th>Date</th><th>Hour</th><th>Seeders</th><th>Leechers</th><th>Complete</th><th>Comments</th></tr>")
var last *fstopinfo.FSInfoHistory
first := true
for _, ii := range d {
//if ii.Item != nil {
if ii.Item != nil && first {
fmt.Fprintf(body, "<tr><td colspan=\"7\">%s <a href=\"%s\">[goto]</a></td></tr>", strings.TrimSpace(ii.Item.Title), ii.Item.Link)
first = false
}
if last != nil {
if ii.Item != nil && last.Item != nil {
//fmt.Printf("%s - [%d] [%d] [%d]\n", item.Title, pi.Seeders-item.Last.Seeders,
//pi.Leechers-item.Last.Leechers, pi.Complete-item.Last.Complete)
seeders := int64(ii.Item.Seeders - last.Item.Seeders)
leechers := int64(ii.Item.Leechers - last.Item.Leechers)
complete := int64(ii.Item.Complete - last.Item.Complete)
comments := int64(ii.Item.Comments - last.Item.Comments)
fmt.Fprintf(body, "<tr><td>%s</td><td>%d</td><td>%d (%d)</td><td>%d (%d)</td><td>%d (%d)</td><td>%d (%d)</td></tr>",
ii.Date, ii.Hour,
ii.Item.Seeders, seeders,
ii.Item.Leechers, leechers,
ii.Item.Complete, complete,
ii.Item.Comments, comments)
} else if ii.Item != nil && last.Item == nil {
fmt.Fprintf(body, "<tr><td>%s</td><td>%d</td><td>%d (-)</td><td>%d (-)</td><td>%d (-)</td><td>%d (-)</td></tr>",
ii.Date, ii.Hour,
ii.Item.Seeders,
ii.Item.Leechers,
ii.Item.Complete,
ii.Item.Comments)
} else {
fmt.Fprintf(body, "<tr><td>%s</td><td>%d</td></tr>",
ii.Date, ii.Hour)
}
}
last = ii
//}
}
fmt.Fprintln(body, "</table>")
tmpl := LoadTemplates("base")
tmpldata := map[string]interface{}{
"Title": config.Title,
"Body": template.HTML(body.String()),
}
err = tmpl.ExecuteTemplate(w, "base", tmpldata)
if err != nil {
http.Error(w, "Error processing template", 500)
return
}
})
http.HandleFunc("/chart", func(w http.ResponseWriter, r *http.Request) {
r.ParseForm()
if !initialCheck(w, r) {
return
}
csession := config.Session.Clone()
defer csession.Close()
id := r.Form.Get("id")
if id == "" {
w.Header().Add("Content-Type", "text/html; charset=utf-8")
http.Error(w, "ID not sent", 500)
return
}
size := r.Form.Get("size")
i := fstopinfo.NewInfo(config.Logger, csession)
i.Database = config.Database
var d []*fstopinfo.FSInfoHistory
var err error
dcache, found := detailCache.Get(id)
if found {
d = dcache.([]*fstopinfo.FSInfoHistory)
}
if d == nil {
d, err = i.History(id, config.HistoryDays)
if err != nil {
w.Header().Add("Content-Type", "text/html; charset=utf-8")
http.Error(w, err.Error(), 500)
return
}
if d != nil {
detailCache.Set(id, d, 0)
}
}
if d == nil {
w.Header().Add("Content-Type", "text/html; charset=utf-8")
http.Error(w, "Not found", 500)
return
}
p, err := plot.New()
if err != nil {
panic(err)
}
p.Title.Text = "Chart"
p.X.Label.Text = "Time"
p.Y.Label.Text = "Amount"
c_seeders := make(plotter.XYs, 0)
c_leechers := make(plotter.XYs, 0)
c_complete := make(plotter.XYs, 0)
c_comments := make(plotter.XYs, 0)
var last *fstopinfo.FSInfoHistory
first := true
cttotal := int32(0)
for _, ii := range d {
if ii.Item != nil {
cttotal++
if first {
p.Title.Text = strings.TrimSpace(ii.Item.Title)
first = false
}
if last != nil && last.Item != nil {
c_seeders = append(c_seeders, struct{ X, Y float64 }{float64(cttotal), float64(ii.Item.Seeders)})
c_leechers = append(c_leechers, struct{ X, Y float64 }{float64(cttotal), float64(ii.Item.Leechers)})
c_complete = append(c_complete, struct{ X, Y float64 }{float64(cttotal), float64(ii.Item.Complete - last.Item.Complete)})
c_comments = append(c_comments, struct{ X, Y float64 }{float64(cttotal), float64(ii.Item.Comments)})
}
last = ii
}
}
w.Header().Add("Content-Type", "image/png")
pl_seeders, err := plotter.NewLine(c_seeders)
if err != nil {
http.Error(w, err.Error(), 500)
return
}
pl_seeders.LineStyle.Width = vg.Length(1)
pl_seeders.LineStyle.Color = color.RGBA{R: 255, A: 255}
p.Add(pl_seeders)
p.Legend.Add("Seeders", pl_seeders)
pl_leechers, err := plotter.NewLine(c_leechers)
if err != nil {
http.Error(w, err.Error(), 500)
return
}
pl_leechers.LineStyle.Width = vg.Length(1)
pl_leechers.LineStyle.Color = color.RGBA{G: 255, A: 255}
p.Add(pl_leechers)
p.Legend.Add("Leechers", pl_leechers)
pl_complete, err := plotter.NewLine(c_complete)
if err != nil {
http.Error(w, err.Error(), 500)
return
}
pl_complete.LineStyle.Width = vg.Length(1)
pl_complete.LineStyle.Color = color.RGBA{B: 255, A: 255}
p.Add(pl_complete)
p.Legend.Add("@Complete", pl_complete)
pl_comments, err := plotter.NewLine(c_comments)
if err != nil {
http.Error(w, err.Error(), 500)
return
}
pl_comments.LineStyle.Width = vg.Length(1)
pl_comments.LineStyle.Color = color.RGBA{R: 255, B: 255, A: 255}
p.Add(pl_comments)
p.Legend.Add("Comments", pl_comments)
width := vg.Length(640)
height := vg.Length(480)
if size == "small" {
width = vg.Length(640)
height = vg.Length(160)
} else if size == "short" {
width = vg.Length(200)
height = vg.Length(80)
p.Title.Text = ""
p.X.Label.Text = ""
p.Y.Label.Text = ""
}
c := vgimg.PngCanvas{vgimg.New(width, height)}
p.Draw(plot.MakeDrawArea(c))
c.WriteTo(w)
})
http.HandleFunc("/res/", func(w http.ResponseWriter, r *http.Request) {
p := strings.Replace(path.Clean(r.URL.Path), "/res/", "res/files/", 1)
d, err := Asset(p)
if err != nil {
http.Error(w, "Error loading resource", 500)
return
}
w.Header().Add("Content-Type", mime.TypeByExtension(path.Ext(p)))
w.Write(d)
//fmt.Fprintf(w, "RES %s\n", p)
})
http.ListenAndServe(fmt.Sprintf("localhost:%d", config.Port), nil)
}
func marshalPNG(r *http.Request, results []*metricData) []byte {
p, err := plot.New()
if err != nil {
panic(err)
}
// set bg/fg colors
bgcolor := string2Color(getString(r.FormValue("bgcolor"), "black"))
p.BackgroundColor = bgcolor
fgcolorstr := getString(r.FormValue("fgcolor"), "white")
fgcolor := string2Color(fgcolorstr)
p.Title.Color = fgcolor
p.X.LineStyle.Color = fgcolor
p.Y.LineStyle.Color = fgcolor
p.X.Tick.LineStyle.Color = fgcolor
p.Y.Tick.LineStyle.Color = fgcolor
p.X.Tick.Label.Color = fgcolor
p.Y.Tick.Label.Color = fgcolor
p.X.Label.Color = fgcolor
p.Y.Label.Color = fgcolor
p.Legend.Color = fgcolor
// set grid
grid := plotter.NewGrid()
grid.Vertical.Color = fgcolor
grid.Horizontal.Color = fgcolor
p.Add(grid)
// line mode (ikruglow) TODO check values
lineMode := getString(r.FormValue("lineMode"), "slope")
// width and height
width := getInt(r.FormValue("width"), 330)
height := getInt(r.FormValue("height"), 250)
// need different timeMarker's based on step size
p.Title.Text = r.FormValue("title")
p.X.Tick.Marker = makeTimeMarker(results[0].GetStepTime())
hideLegend := getBool(r.FormValue("hideLegend"), false)
graphOnly := getBool(r.FormValue("graphOnly"), false)
if graphOnly {
p.HideAxes()
}
if len(results) == 1 && results[0].color == "" {
results[0].color = fgcolorstr
}
var lines []plot.Plotter
for i, r := range results {
l := NewResponsePlotter(r)
l.LineStyle.Color = fgcolor
// consolidate datapoints
l.maybeConsolidateData(width)
if r.drawAsInfinite {
l.lineMode = "drawAsInfinite"
} else {
l.lineMode = lineMode
}
if r.color != "" {
l.Color = string2Color(r.color)
} else {
l.Color = plotutil.Color(i)
}
lines = append(lines, l)
if !graphOnly && !hideLegend {
p.Legend.Add(r.GetName(), l)
}
}
p.Add(lines...)
p.Y.Max *= 1.05
p.Y.Min *= 0.95
// Draw the plot to an in-memory image.
img := image.NewRGBA(image.Rect(0, 0, width, height))
da := plot.MakeDrawArea(vgimg.NewImage(img))
p.Draw(da)
var b bytes.Buffer
if err := png.Encode(&b, img); err != nil {
panic(err)
}
return b.Bytes()
}