// 非法值: ts=0,value无意义
func GetLast(endpoint, counter string) *cmodel.RRDData {
dsType, step, exists := index.GetTypeAndStep(endpoint, counter)
if !exists {
return cmodel.NewRRDData(0, 0.0)
}
if dsType == g.GAUGE {
return GetLastRaw(endpoint, counter)
}
if dsType == g.COUNTER || dsType == g.DERIVE {
md5 := cutils.Md5(endpoint + "/" + counter)
items := store.GetAllItems(md5)
if len(items) < 2 {
return cmodel.NewRRDData(0, 0.0)
}
f0 := items[0]
f1 := items[1]
delta_ts := f0.Timestamp - f1.Timestamp
delta_v := f0.Value - f1.Value
if delta_ts != int64(step) || delta_ts <= 0 {
return cmodel.NewRRDData(0, 0.0)
}
if delta_v < 0 {
// when cnt restarted, new cnt value would be zero, so fix it here
delta_v = 0
}
return cmodel.NewRRDData(f0.Timestamp, delta_v/float64(delta_ts))
}
return cmodel.NewRRDData(0, 0.0)
}
func configProcRoutes() {
// counter
http.HandleFunc("/counter/all", func(w http.ResponseWriter, r *http.Request) {
RenderDataJson(w, proc.GetAll())
})
// TO BE DISCARDed
http.HandleFunc("/statistics/all", func(w http.ResponseWriter, r *http.Request) {
RenderDataJson(w, proc.GetAll())
})
// items.history
http.HandleFunc("/history/", func(w http.ResponseWriter, r *http.Request) {
urlParam := r.URL.Path[len("/history/"):]
args := strings.Split(urlParam, "/")
argsLen := len(args)
endpoint := args[0]
metric := args[1]
tags := make(map[string]string)
if argsLen > 2 {
tagVals := strings.Split(args[2], ",")
for _, tag := range tagVals {
tagPairs := strings.Split(tag, "=")
if len(tagPairs) == 2 {
tags[tagPairs[0]] = tagPairs[1]
}
}
}
RenderDataJson(w, store.GetAllItems(cutils.Checksum(endpoint, metric, tags)))
})
http.HandleFunc("/v2/history", func(w http.ResponseWriter, r *http.Request) {
r.ParseForm()
if !(len(r.Form["e"]) > 0 && len(r.Form["m"]) > 0) {
RenderDataJson(w, "bad args")
return
}
endpoint := r.Form["e"][0]
metric := r.Form["m"][0]
tags := make(map[string]string)
if len(r.Form["t"]) > 0 {
tagstr := r.Form["t"][0]
tagVals := strings.Split(tagstr, ",")
for _, tag := range tagVals {
tagPairs := strings.Split(tag, "=")
if len(tagPairs) == 2 {
tags[tagPairs[0]] = tagPairs[1]
}
}
}
RenderDataJson(w, store.GetAllItems(cutils.Checksum(endpoint, metric, tags)))
})
// items.last
http.HandleFunc("/last/", func(w http.ResponseWriter, r *http.Request) {
urlParam := r.URL.Path[len("/last/"):]
args := strings.Split(urlParam, "/")
argsLen := len(args)
endpoint := args[0]
metric := args[1]
tags := make(map[string]string)
if argsLen > 2 {
tagVals := strings.Split(args[2], ",")
for _, tag := range tagVals {
tagPairs := strings.Split(tag, "=")
if len(tagPairs) == 2 {
tags[tagPairs[0]] = tagPairs[1]
}
}
}
RenderDataJson(w, store.GetLastItem(cutils.Checksum(endpoint, metric, tags)))
})
http.HandleFunc("/v2/last", func(w http.ResponseWriter, r *http.Request) {
r.ParseForm()
if !(len(r.Form["e"]) > 0 && len(r.Form["m"]) > 0) {
RenderDataJson(w, "bad args")
return
}
endpoint := r.Form["e"][0]
metric := r.Form["m"][0]
tags := make(map[string]string)
if len(r.Form["t"]) > 0 {
tagstr := r.Form["t"][0]
tagVals := strings.Split(tagstr, ",")
for _, tag := range tagVals {
tagPairs := strings.Split(tag, "=")
if len(tagPairs) == 2 {
tags[tagPairs[0]] = tagPairs[1]
}
}
}
RenderDataJson(w, store.GetLastItem(cutils.Checksum(endpoint, metric, tags)))
})
}