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package sql
import (
"fmt"
"net"
"reflect"
"strings"
"sync"
"testing"
"time"
)
type rowCount struct {
table string
rows int
}
var tests = []struct {
question string
qtype uint16
hijacked bool
answers []string
t time.Time
remoteAddr net.IP
rowCounts []rowCount
}{
{"foo.example.com", 1, false, []string{"192.0.2.1"}, time.Date(2019, 6, 15, 22, 15, 10, 0, time.UTC), net.IPv4(192, 0, 2, 100),
[]rowCount{{"rr_question", 1}, {"rr_answer", 1}, {"log", 1}, {"rr_type", 1}, {"remote_addr", 1}}},
{"foo.example.com", 1, true, []string{"192.0.2.1"}, time.Date(2019, 6, 15, 22, 16, 20, 0, time.UTC), net.IPv4(192, 0, 2, 100),
[]rowCount{{"rr_question", 1}, {"rr_answer", 1}, {"log", 2}, {"rr_type", 1}, {"remote_addr", 1}}},
{"bar.example.com", 1, false, []string{"192.0.2.2"}, time.Date(2019, 6, 15, 22, 17, 30, 0, time.UTC), net.IPv4(192, 0, 2, 101),
[]rowCount{{"rr_question", 2}, {"rr_answer", 2}, {"log", 3}, {"rr_type", 1}, {"remote_addr", 2}}},
{"bar.example.com", 1, false, []string{"192.0.2.2"}, time.Date(2019, 6, 15, 22, 18, 40, 0, time.UTC), net.IPv4(192, 0, 2, 102),
[]rowCount{{"rr_question", 2}, {"rr_answer", 2}, {"log", 4}, {"rr_type", 1}, {"remote_addr", 3}}},
{"bar.example.com", 28, false, []string{"2001:db8::1"}, time.Date(2019, 6, 15, 23, 4, 40, 0, time.UTC), net.IPv4(192, 0, 2, 102),
[]rowCount{{"rr_question", 2}, {"rr_answer", 3}, {"log", 5}, {"rr_type", 2}, {"remote_addr", 3}}},
{"bar.example.com", 28, false, []string{"2001:db8::2", "2001:db8::3"}, time.Date(2019, 6, 15, 23, 35, 0, 0, time.UTC), net.IPv4(192, 0, 2, 102),
[]rowCount{{"rr_question", 2}, {"rr_answer", 5}, {"log", 6}, {"rr_type", 2}, {"remote_addr", 3}}},
{"baz.example.com", 28, false, []string{"2001:db8::4"}, time.Date(2019, 6, 15, 23, 35, 0, 0, time.UTC), net.IPv4(192, 0, 2, 102),
[]rowCount{{"rr_question", 3}, {"rr_answer", 6}, {"log", 7}, {"rr_type", 2}, {"remote_addr", 3}}},
{"baz.example.com", 28, false, nil, time.Date(2019, 6, 16, 1, 5, 0, 0, time.UTC), net.IPv4(192, 0, 2, 102),
[]rowCount{{"rr_question", 3}, {"rr_answer", 6}, {"log", 8}, {"rr_type", 2}, {"remote_addr", 3}}},
}
func testClient() *Client {
c, err := New(":memory:")
if err != nil {
panic(err)
}
return c
}
func count(t *testing.T, client *Client, query string, args ...interface{}) int {
rows := 0
if err := client.db.Get(&rows, query, args...); err != nil {
t.Fatalf("query failed: %s: %s", query, err)
}
return rows
}
func writeTests(c *Client, t *testing.T) {
for i, tt := range tests {
if err := c.writeLog(tt.t, tt.remoteAddr, tt.hijacked, tt.qtype, tt.question, tt.answers...); err != nil {
t.Errorf("#%d: WriteLog(%q, %s, %t, %d, %q, %q) = %s, want nil", i, tt.t, tt.remoteAddr.String(), tt.hijacked, tt.qtype, tt.question, tt.answers, err)
}
}
}
func TestWriteLog(t *testing.T) {
c := testClient()
for i, tt := range tests {
if err := c.writeLog(tt.t, tt.remoteAddr, tt.hijacked, tt.qtype, tt.question, tt.answers...); err != nil {
t.Errorf("#%d: WriteLog(%q, %s, %t, %d, %q, %q) = %s, want nil", i, tt.t, tt.remoteAddr.String(), tt.hijacked, tt.qtype, tt.question, tt.answers, err)
}
for _, rowCount := range tt.rowCounts {
rows := count(t, c, "SELECT COUNT(*) FROM "+rowCount.table+" LIMIT 1")
if rows != rowCount.rows {
t.Errorf("#%d: got %d rows in %s, want %d", i, rows, rowCount.table, rowCount.rows)
}
}
}
}
func TestReadLog(t *testing.T) {
c := testClient()
writeTests(c, t)
allEntries := [][]logEntry{
{{ID: 8, Question: "baz.example.com", Qtype: 28, Time: 1560647100, RemoteAddr: net.IPv4(192, 0, 2, 102)}},
{{ID: 7, Question: "baz.example.com", Qtype: 28, Answer: "2001:db8::4", Time: 1560641700, RemoteAddr: net.IPv4(192, 0, 2, 102)}},
{
{ID: 6, Question: "bar.example.com", Qtype: 28, Answer: "2001:db8::3", Time: 1560641700, RemoteAddr: net.IPv4(192, 0, 2, 102)},
{ID: 6, Question: "bar.example.com", Qtype: 28, Answer: "2001:db8::2", Time: 1560641700, RemoteAddr: net.IPv4(192, 0, 2, 102)},
},
{{ID: 5, Question: "bar.example.com", Qtype: 28, Answer: "2001:db8::1", Time: 1560639880, RemoteAddr: net.IPv4(192, 0, 2, 102)}},
{{ID: 4, Question: "bar.example.com", Qtype: 1, Answer: "192.0.2.2", Time: 1560637120, RemoteAddr: net.IPv4(192, 0, 2, 102)}},
{{ID: 3, Question: "bar.example.com", Qtype: 1, Answer: "192.0.2.2", Time: 1560637050, RemoteAddr: net.IPv4(192, 0, 2, 101)}},
{{ID: 2, Question: "foo.example.com", Qtype: 1, Answer: "192.0.2.1", Time: 1560636980, RemoteAddr: net.IPv4(192, 0, 2, 100), Hijacked: true}},
{{ID: 1, Question: "foo.example.com", Qtype: 1, Answer: "192.0.2.1", Time: 1560636910, RemoteAddr: net.IPv4(192, 0, 2, 100)}},
}
for n := 1; n <= len(allEntries); n++ {
var want []logEntry
for _, entries := range allEntries[:n] {
want = append(want, entries...)
}
got, err := c.readLog(n)
if len(got) != len(want) {
t.Errorf("len(got) = %d, want %d", len(got), len(want))
}
if err != nil || !reflect.DeepEqual(got, want) {
var sb1 strings.Builder
for _, e := range got {
sb1.WriteString(fmt.Sprintf(" %+v\n", e))
}
var sb2 strings.Builder
for _, e := range want {
sb2.WriteString(fmt.Sprintf(" %+v\n", e))
}
t.Errorf("ReadLog(%d) = (\n%s, %v),\nwant (\n%s, %v)", n, sb1.String(), err, sb2.String(), nil)
}
}
}
func TestDeleteLogBefore(t *testing.T) {
c := testClient()
writeTests(c, t)
u := tests[1].t.Add(time.Second)
if err := c.deleteLogBefore(u); err != nil {
t.Fatalf("DeleteBefore(%s) = %v, want %v", u, err, nil)
}
want := []logEntry{
{ID: 8, Question: "baz.example.com", Qtype: 28, Time: 1560647100, RemoteAddr: net.IPv4(192, 0, 2, 102)},
{ID: 7, Question: "baz.example.com", Qtype: 28, Answer: "2001:db8::4", Time: 1560641700, RemoteAddr: net.IPv4(192, 0, 2, 102)},
{ID: 6, Question: "bar.example.com", Qtype: 28, Answer: "2001:db8::3", Time: 1560641700, RemoteAddr: net.IPv4(192, 0, 2, 102)},
{ID: 6, Question: "bar.example.com", Qtype: 28, Answer: "2001:db8::2", Time: 1560641700, RemoteAddr: net.IPv4(192, 0, 2, 102)},
{ID: 5, Question: "bar.example.com", Qtype: 28, Answer: "2001:db8::1", Time: 1560639880, RemoteAddr: net.IPv4(192, 0, 2, 102)},
{ID: 4, Question: "bar.example.com", Qtype: 1, Answer: "192.0.2.2", Time: 1560637120, RemoteAddr: net.IPv4(192, 0, 2, 102)},
{ID: 3, Question: "bar.example.com", Qtype: 1, Answer: "192.0.2.2", Time: 1560637050, RemoteAddr: net.IPv4(192, 0, 2, 101)},
}
n := 10
got, err := c.readLog(n)
if err != nil || !reflect.DeepEqual(got, want) {
t.Errorf("ReadLog(%d) = (%+v, %v), want (%+v, %v)", n, got, err, want, nil)
}
question := "foo.example.com"
if want, got := 0, count(t, c, "SELECT COUNT(*) FROM rr_question WHERE name = $1", question); got != want {
t.Errorf("got %d rows for question %q, want %d", got, question, want)
}
answer := "192.0.2.1"
if want, got := 0, count(t, c, "SELECT COUNT(*) FROM rr_answer WHERE name = $1", answer); got != want {
t.Errorf("got %d rows for answer %q, want %d", got, question, want)
}
// Delete logs in the far past which matches 0 entries.
oneYear := time.Hour * 8760
if err := c.deleteLogBefore(u.Add(-oneYear)); err != nil {
t.Fatal(err)
}
}
func TestInterleavedRW(t *testing.T) {
c := testClient()
var wg sync.WaitGroup
wg.Add(1)
ch := make(chan bool, 10)
var err error
go func() {
defer wg.Done()
for range ch {
err = c.writeLog(time.Now(), net.IPv4(127, 0, 0, 1), false, 1, "example.com.", "192.0.2.1")
}
}()
ch <- true
close(ch)
if _, err := c.readLog(1); err != nil {
t.Fatal(err)
}
wg.Wait()
if err != nil {
t.Fatal(err)
}
}
func TestReadLogStats(t *testing.T) {
c := testClient()
got, err := c.readLogStats()
if err != nil {
t.Fatal(err)
}
want := logStats{}
if !reflect.DeepEqual(got, want) {
t.Errorf("readLogStats() = (%+v, _), want (%+v, _)", got, want)
}
writeTests(c, t)
got, err = c.readLogStats()
if err != nil {
t.Fatal(err)
}
want = logStats{
Since: 1560636910,
Hijacked: 1,
Total: 8,
Events: []logEvent{
{Time: 1560636910, Count: 1},
{Time: 1560636980, Count: 1},
{Time: 1560637050, Count: 1},
{Time: 1560637120, Count: 1},
{Time: 1560639880, Count: 1},
{Time: 1560641700, Count: 2},
{Time: 1560647100, Count: 1},
},
}
if !reflect.DeepEqual(got, want) {
t.Errorf("readLogStats() = (%+v, _), want (%+v, _)", got, want)
}
}
func BenchmarkReadLog(b *testing.B) {
c := testClient()
for i := 0; i < 1000; i++ {
if err := c.writeLog(time.Now(), net.ParseIP("127.0.0.1"), false, 1, "example.com.", "192.0.2.1"); err != nil {
b.Fatal(err)
}
}
b.ResetTimer()
for n := 0; n < b.N; n++ {
c.readLog(1000)
}
}
func BenchmarkDeleteLogBefore(b *testing.B) {
c := testClient()
for n := 0; n < b.N; n++ {
b.StopTimer()
// Generate test data with many unique values for each column
for i := 0; i < 16; i++ {
for j := 0; j < 256; j++ {
if err := c.writeLog(time.Now(), net.ParseIP(fmt.Sprintf("127.0.%d.%d", i, j)), false, 1, fmt.Sprintf("%d-%d.example.com.", i, j), fmt.Sprintf("127.1.%d.%d", i, j)); err != nil {
b.Fatal(err)
}
}
}
b.StartTimer()
c.deleteLogBefore(time.Now())
}
}
|
