func grapher() {
g := rrd.NewGrapher()
g.SetTitle("Test")
g.SetVLabel("some variable")
g.SetSize(800, 300)
g.SetWatermark("some watermark")
g.Def("v1", dbfile, "p4p1_in", "AVERAGE")
g.Def("v2", dbfile, "p4p1_out", "AVERAGE")
g.Def("v3", dbfile, "cnt", "AVERAGE")
g.VDef("max1", "v1,MAXIMUM")
g.VDef("avg2", "v2,AVERAGE")
g.VDef("avg3", "v3,AVERAGE") //avg3 是可变无特殊含义
g.Line(1, "v1", "ff0000", "p4p1_in")
g.Line(1, "v2", "0000ff", "p4p1_out")
g.Line(1, "v3", "00ff00", "cnt")
g.GPrintT("max1", "max1 at %c")
g.GPrint("avg2", "avg2=%lf")
g.PrintT("max1", "max1 at %c")
g.Print("avg2", "avg2=%lf")
now := time.Now()
fmt.Println(now.Add(-1800 * time.Second))
i, err := g.SaveGraph("/tmp/test_rrd1.png", now.Add(-1800*time.Second), now)
fmt.Printf("%+v\n", i)
if err != nil {
fmt.Println(err)
// i, buf, err := g.Graph(now.Add(-1800*time.Second), now)
// i, _, err := g.Graph(now.Add(-1800*time.Second), now)
// fmt.Printf("%+v\n", i)
// if err != nil {
// fmt.Println(err)
// }
// err = ioutil.WriteFile("/tmp/test_rrd2.png", buf, 0666)
// if err != nil {
// fmt.Println(err)
// }
}
}
func grapher() {
g := rrd.NewGrapher()
g.SetTitle("Test")
g.SetVLabel("some variable")
g.SetSize(800, 300)
g.SetWatermark("some watermark")
for key, _ := range traffic_in_map {
in_name := key + "_in"
out_name := key + "_out"
max_in_name := key + "_max"
avg_out_name := key + "_avg"
g.Def(in_name, dbfile, in_name, "AVERAGE")
g.Def(out_name, dbfile, out_name, "AVERAGE")
g.VDef(max_in_name, fmt.Sprintf("%s,MAXIMUM", in_name))
g.VDef(avg_out_name, fmt.Sprintf("%s,AVERAGE", out_name))
g.Line(1, in_name, "ff0000", in_name)
g.Line(1, out_name, "0000ff", out_name)
}
// g.GPrintT("max1", "max1 at %c")
// g.GPrint("avg2", "avg2=%lf")
// g.PrintT("max1", "max1 at %c")
// g.Print("avg2", "avg2=%lf")
now := time.Now()
fmt.Println(now.Add(-1800 * time.Second))
i, err := g.SaveGraph("/tmp/test_rrd1.png", now.Add(-1800*time.Second), now)
fmt.Printf("%+v\n", i)
if err != nil {
fmt.Println(err)
// i, buf, err := g.Graph(now.Add(-1800*time.Second), now)
// i, _, err := g.Graph(now.Add(-1800*time.Second), now)
// fmt.Printf("%+v\n", i)
// if err != nil {
// fmt.Println(err)
// }
// err = ioutil.WriteFile("/tmp/test_rrd2.png", buf, 0666)
// if err != nil {
// fmt.Println(err)
// }
}
}