Fix many lint warnings found by gometalinter

helpers.go

@@ -5,6 +5,8 @@ import (
 	"errors"
 	"io"
 	"net/http"
+	"path"
+	"runtime"
 	"sort"
 	"strings"
 	"time"
@@ -80,7 +82,7 @@ func generateMapFromStats(stats *periodicStats, start int, end int) map[string]i
 
 	result := map[string]interface{}{
 		"dns_queries":           getReversedSlice(stats.entries[totalRequests], start, end),
-		"blocked_filtering":     getReversedSlice(stats.entries[filteredLists], start, end),
+		"blocked_filtering":     getReversedSlice(stats.entries[filteredTotal], start, end),
 		"replaced_safebrowsing": getReversedSlice(stats.entries[filteredSafebrowsing], start, end),
 		"replaced_safesearch":   getReversedSlice(stats.entries[filteredSafesearch], start, end),
 		"replaced_parental":     getReversedSlice(stats.entries[filteredParental], start, end),
@@ -89,18 +91,6 @@ func generateMapFromStats(stats *periodicStats, start int, end int) map[string]i
 	return result
 }
 
-func produceTop(m map[string]int, top int) map[string]int {
-	toMarshal := map[string]int{}
-	topKeys := sortByValue(m)
-	for i, k := range topKeys {
-		if i == top {
-			break
-		}
-		toMarshal[k] = m[k]
-	}
-	return toMarshal
-}
-
 // -------------------------------------
 // helper functions for querylog parsing
 // -------------------------------------
@@ -206,3 +196,13 @@ func parseParametersFromBody(r io.Reader) (map[string]string, error) {
 
 	return parameters, nil
 }
+
+// ---------------------
+// debug logging helpers
+// ---------------------
+func _Func() string {
+	pc := make([]uintptr, 10) // at least 1 entry needed
+	runtime.Callers(2, pc)
+	f := runtime.FuncForPC(pc[0])
+	return path.Base(f.Name())
+}