* querylog: move code to a separate package

+ config: "querylog_interval" setting
/control/querylog_config, /control/querylog_info
+ POST /control/querylog_clear

querylog/querylog_test.go

@@ -0,0 +1,43 @@
+package querylog
+
+import (
+	"net"
+	"testing"
+
+	"github.com/AdguardTeam/AdGuardHome/dnsfilter"
+	"github.com/miekg/dns"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestQueryLog(t *testing.T) {
+	conf := Config{
+		Interval: 1,
+	}
+	l := New(conf)
+
+	q := dns.Msg{}
+	q.Question = append(q.Question, dns.Question{
+		Name:   "example.org.",
+		Qtype:  dns.TypeA,
+		Qclass: dns.ClassINET,
+	})
+
+	a := dns.Msg{}
+	a.Question = append(a.Question, q.Question[0])
+	answer := new(dns.A)
+	answer.Hdr = dns.RR_Header{
+		Name:   q.Question[0].Name,
+		Rrtype: dns.TypeA,
+		Class:  dns.ClassINET,
+	}
+	answer.A = net.IP{1, 2, 3, 4}
+	a.Answer = append(a.Answer, answer)
+
+	res := dnsfilter.Result{}
+	l.Add(&q, &a, &res, 0, nil, "upstream")
+
+	d := l.GetData()
+	m := d[0]
+	mq := m["question"].(map[string]interface{})
+	assert.True(t, mq["host"].(string) == "example.org")
+}