AdGuardHome/stats/stats_http.go

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// HTTP request handlers for accessing statistics data and configuration settings
package stats
import (
"encoding/json"
"fmt"
"net/http"
"time"
"github.com/AdguardTeam/golibs/log"
)
func httpError(r *http.Request, w http.ResponseWriter, code int, format string, args ...interface{}) {
text := fmt.Sprintf(format, args...)
log.Info("Stats: %s %s: %s", r.Method, r.URL, text)
http.Error(w, text, code)
}
// Return data
func (s *statsCtx) handleStats(w http.ResponseWriter, r *http.Request) {
units := Hours
if s.limit/24 > 7 {
units = Days
}
start := time.Now()
d := s.getData(units)
log.Debug("Stats: prepared data in %v", time.Since(start))
if d == nil {
httpError(r, w, http.StatusInternalServerError, "Couldn't get statistics data")
return
}
data, err := json.Marshal(d)
if err != nil {
httpError(r, w, http.StatusInternalServerError, "json encode: %s", err)
return
}
w.Write(data)
}
type config struct {
IntervalDays uint32 `json:"interval"`
}
// Get configuration
func (s *statsCtx) handleStatsInfo(w http.ResponseWriter, r *http.Request) {
resp := config{}
resp.IntervalDays = s.limit / 24
data, err := json.Marshal(resp)
if err != nil {
httpError(r, w, http.StatusInternalServerError, "json encode: %s", err)
return
}
w.Header().Set("Content-Type", "application/json")
_, err = w.Write(data)
if err != nil {
httpError(r, w, http.StatusInternalServerError, "http write: %s", err)
}
}
// Set configuration
func (s *statsCtx) handleStatsConfig(w http.ResponseWriter, r *http.Request) {
reqData := config{}
err := json.NewDecoder(r.Body).Decode(&reqData)
if err != nil {
httpError(r, w, http.StatusBadRequest, "json decode: %s", err)
return
}
if !checkInterval(reqData.IntervalDays) {
httpError(r, w, http.StatusBadRequest, "Unsupported interval")
return
}
s.setLimit(int(reqData.IntervalDays))
s.conf.ConfigModified()
}
// Reset data
func (s *statsCtx) handleStatsReset(w http.ResponseWriter, r *http.Request) {
s.clear()
}
// Register web handlers
func (s *statsCtx) initWeb() {
if s.conf.HTTPRegister == nil {
return
}
s.conf.HTTPRegister("GET", "/control/stats", func(w http.ResponseWriter, r *http.Request) {
s.handleStats(w, r)
})
s.conf.HTTPRegister("POST", "/control/stats_reset", func(w http.ResponseWriter, r *http.Request) {
s.handleStatsReset(w, r)
})
s.conf.HTTPRegister("POST", "/control/stats_config", func(w http.ResponseWriter, r *http.Request) {
s.handleStatsConfig(w, r)
})
s.conf.HTTPRegister("GET", "/control/stats_info", func(w http.ResponseWriter, r *http.Request) {
s.handleStatsInfo(w, r)
})
}