func (this *Ext) Collect() {
for {
now := time.Now()
timeDelta := now.Sub(this.timestamp)
timeCondition := (this.timestamp.Before(now) && timeDelta > this.period)
if timeCondition || this.init {
this.init = false
logging.Info(fmt.Sprintf("GET %s", this.url))
resp, err := http.Get(this.url)
if err != nil {
logging.Error(err)
return
}
payload, err := ioutil.ReadAll(resp.Body)
if err != nil {
logging.Error(err)
return
}
this.dataCh <- payload
}
select {
case <-time.After(this.period):
continue
case <-this.quitCh:
return
}
}
}
func (this *Manager) CacheHandler(w http.ResponseWriter, r *http.Request) {
this.logAccess(r)
latestItem, err := this.cache.Get()
if err != nil {
logging.Error(err)
w.WriteHeader(500)
return
}
response, err := latestItem.JSON()
if err != nil {
logging.Error(err)
w.WriteHeader(500)
return
}
w.Header().Set("Content-Type", "application/json")
w.WriteHeader(200)
w.Write(response)
}