Merge: * querylog, stats: don't print unnecessary log messages

Close #1039

* commit 'c9b4a0742ffa13d831240b53b67559999b183cf7':
  * querylog, stats: don't print unnecessary log messages

querylog/qlog.go

@@ -62,12 +62,12 @@ func (l *queryLog) Clear() {
 	l.logBufferLock.Unlock()
 
 	err := os.Remove(l.logFile + ".1")
-	if err != nil {
+	if err != nil && !os.IsNotExist(err) {
 		log.Error("file remove: %s: %s", l.logFile+".1", err)
 	}
 
 	err = os.Remove(l.logFile)
-	if err != nil {
+	if err != nil && !os.IsNotExist(err) {
 		log.Error("file remove: %s: %s", l.logFile, err)
 	}
 

stats/stats_http.go

@@ -6,6 +6,7 @@ import (
 	"encoding/json"
 	"fmt"
 	"net/http"
+	"time"
 
 	"github.com/AdguardTeam/golibs/log"
 )
@@ -24,9 +25,10 @@ func (s *statsCtx) handleStats(w http.ResponseWriter, r *http.Request) {
 	if s.limit/24 > 7 {
 		units = Days
 	}
-	counter := log.StartTimer()
+
+	start := time.Now()
 	d := s.getData(units)
-	counter.LogElapsed("Stats: prepared data")
+	log.Debug("Stats: prepared data in %v", time.Since(start))
 
 	if d == nil {
 		httpError(r, w, http.StatusInternalServerError, "Couldn't get statistics data")