Fix go report errors and updated README with new metric

README.md

@@ -129,3 +129,4 @@ scrape_configs:
 | adguard_top_blocked_domains       | This represent the top blocked domains                               |
 | adguard_top_clients               | This represent the top clients                                       |
 | adguard_top_queried_domains       | This represent the top domains that are queried                      |
+| adguard_query_types               | This represent the types of DNS queries                              |

internal/adguard/client.go

@@ -131,8 +131,8 @@ func (c *Client) setLogMetrics(logdata *LogData) {
 		logstats := logdata.Data[i]
 		if logstats.DNS != nil {
 			for j := range logstats.DNS {
-				dns_type := logstats.DNS[j].Type
-				m[dns_type] += 1
+				dnsType := logstats.DNS[j].Type
+				m[dnsType] += 1
 			}
 		}
 	}

internal/adguard/model.go

@@ -15,26 +15,26 @@ type Stats struct {
 	TopClients            []map[string]int `json:"top_clients"`
 }
 
-// DNS answer struct in the log
+// DNSAnswer struct from LogStats
 type DNSAnswer struct {
 	Ttl   float64 `json:"ttl"`
 	Type  string  `json:"type"`
 	Value string  `json:"value"`
 }
 
-// DNS query struct in the log
+// DNSQuery struct from LogStats
 type DNSQuery struct {
 	Class string `json:"class"`
 	Host  string `json:"host"`
 	Type  string `json:"type"`
 }
 
-// LogStats struct for the Adguard log statistics JSON API corresponding model.
+// LogStats struct, sub struct of LogData to collect the dns stats from the log
 type LogStats struct {
 	DNS          []DNSAnswer `json:"answer"`
 	DNSSec       bool        `json:"answer_dnssec"`
 	Client       string      `json:"client"`
-	Client_proto string      `json:"client_proto"`
+	ClientProto  string      `json:"client_proto"`
 	Elapsed      string      `json:"elapsedMs"`
 	Question     DNSQuery    `json:"question"`
 	Reason       string      `json:"reason"`
@@ -43,6 +43,7 @@ type LogStats struct {
 	Upstream     string      `json:"upstream"`
 }
 
+// LogData struct for the Adguard log statistics JSON API corresponding model.
 type LogData struct {
 	Data   []LogStats `json:"data"`
 	Oldest string     `json:"oldest"`

internal/metrics/metrics.go

@@ -97,7 +97,7 @@ var (
 		[]string{"hostname", "client"},
 	)
 
-	// Answer
+	// QueryTypes - The type of DNS Queries (A, AAAA...)
 	QueryTypes = prometheus.NewGaugeVec(
 		prometheus.GaugeOpts{
 			Name:      "query_types",