func EntityTail(query *entities.Query) server.Handler {
return server.Handler(
func(req *wcg.Request) response.Response {
result := query.MustExecute(req)
return response.NewJSONResponse(result.Tail())
})
}
func execStatsQuery(req *wcg.Request, query *entities.Query) response.Response {
now := lib.Now()
until := wcg.ParseDateTimeOr(req.Query("until"), now)
if until.After(now) {
until = now
}
sinceDefault := until.Add(StatsQueryDefaultTimeWindow)
sinceMin := until.Add(StatsQueryMaxTimeWindow)
since := wcg.ParseDateTimeOr(req.Query("since"), until.Add(-24*time.Hour))
if since.After(until) {
since = sinceDefault
} else if sinceMin.After(since) {
since = sinceMin
}
query = query.Filter("Timestamp >=", since).Filter("Timestamp <", until)
if req.Query("device") != "" {
query = query.Filter("Device =", req.Query("device"))
}
return response.NewJSONResponse(query.MustExecute(req).Data)
}