bbb5413331
DNS module passes additional parameters to Stats module. This allows Stats to handle HTTP requests by itself - completely removing all stats-related code from outside.
108 lines
2.5 KiB
Go
108 lines
2.5 KiB
Go
// HTTP request handlers for accessing statistics data and configuration settings
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package stats
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import (
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"encoding/json"
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"fmt"
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"net/http"
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"github.com/AdguardTeam/golibs/log"
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)
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func httpError(r *http.Request, w http.ResponseWriter, code int, format string, args ...interface{}) {
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text := fmt.Sprintf(format, args...)
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log.Info("Stats: %s %s: %s", r.Method, r.URL, text)
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http.Error(w, text, code)
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}
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// Return data
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func (s *statsCtx) handleStats(w http.ResponseWriter, r *http.Request) {
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units := Hours
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if s.limit/24 > 7 {
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units = Days
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}
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counter := log.StartTimer()
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d := s.getData(units)
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counter.LogElapsed("Stats: prepared data")
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if d == nil {
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httpError(r, w, http.StatusInternalServerError, "Couldn't get statistics data")
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return
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}
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data, err := json.Marshal(d)
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if err != nil {
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httpError(r, w, http.StatusInternalServerError, "json encode: %s", err)
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return
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}
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w.Write(data)
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}
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type config struct {
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IntervalDays uint32 `json:"interval"`
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}
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// Get configuration
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func (s *statsCtx) handleStatsInfo(w http.ResponseWriter, r *http.Request) {
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resp := config{}
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resp.IntervalDays = s.limit / 24
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data, err := json.Marshal(resp)
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if err != nil {
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httpError(r, w, http.StatusInternalServerError, "json encode: %s", err)
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return
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}
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w.Header().Set("Content-Type", "application/json")
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_, err = w.Write(data)
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if err != nil {
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httpError(r, w, http.StatusInternalServerError, "http write: %s", err)
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}
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}
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// Set configuration
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func (s *statsCtx) handleStatsConfig(w http.ResponseWriter, r *http.Request) {
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reqData := config{}
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err := json.NewDecoder(r.Body).Decode(&reqData)
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if err != nil {
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httpError(r, w, http.StatusBadRequest, "json decode: %s", err)
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return
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}
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if !checkInterval(reqData.IntervalDays) {
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httpError(r, w, http.StatusBadRequest, "Unsupported interval")
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return
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}
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s.setLimit(int(reqData.IntervalDays))
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s.conf.ConfigModified()
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}
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// Reset data
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func (s *statsCtx) handleStatsReset(w http.ResponseWriter, r *http.Request) {
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s.clear()
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}
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// Register web handlers
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func (s *statsCtx) initWeb() {
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if s.conf.HTTPRegister == nil {
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return
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}
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s.conf.HTTPRegister("GET", "/control/stats", func(w http.ResponseWriter, r *http.Request) {
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s.handleStats(w, r)
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})
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s.conf.HTTPRegister("POST", "/control/stats_reset", func(w http.ResponseWriter, r *http.Request) {
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s.handleStatsReset(w, r)
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})
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s.conf.HTTPRegister("POST", "/control/stats_config", func(w http.ResponseWriter, r *http.Request) {
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s.handleStatsConfig(w, r)
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})
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s.conf.HTTPRegister("GET", "/control/stats_info", func(w http.ResponseWriter, r *http.Request) {
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s.handleStatsInfo(w, r)
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})
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}
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