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Pull request 1963: AG-24051-stats-collector

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Updates #6108.

Squashed commit of the following:

commit ca584c8dbbece70b90f6298a0a18a933a698fcf6
Merge: b6e136232 28cfde921
Author: Stanislav Chzhen <s.chzhen@adguard.com>
Date:   Wed Aug 23 17:00:52 2023 +0300

    Merge branch 'master' into AG-24051-stats-collector

commit b6e136232dd619ce09150b608ae5017676031e25
Merge: bbd4780b0 3722c2846
Author: Stanislav Chzhen <s.chzhen@adguard.com>
Date:   Wed Aug 23 16:25:45 2023 +0300

    Merge branch 'master' into AG-24051-stats-collector

commit bbd4780b03a1c954fe2b349d27f1ab3bf7739518
Author: Stanislav Chzhen <s.chzhen@adguard.com>
Date:   Tue Aug 22 17:47:51 2023 +0300

    stats: imp test

commit cfe3b9bdf5fd75bff98f985884b3bff8a88ae8ee
Author: Stanislav Chzhen <s.chzhen@adguard.com>
Date:   Tue Aug 22 16:57:31 2023 +0300

    stats: add test

commit cb579a157056f79c1c3d08479a718698a74e0bb9
Author: Stanislav Chzhen <s.chzhen@adguard.com>
Date:   Mon Aug 21 15:24:40 2023 +0300

    stats: imp docs

commit 3c6ab3affb9ac402db7e3cc3d9696154770e1037
Author: Stanislav Chzhen <s.chzhen@adguard.com>
Date:   Thu Aug 17 14:41:35 2023 +0300

    stats: imp code

commit 125a31b73bb31f7f4886daad9ce7e3bbc97b38c9
Author: Stanislav Chzhen <s.chzhen@adguard.com>
Date:   Wed Aug 16 12:29:10 2023 +0300

    stats: imp test

commit 1ba1eb3b7bd540621bf17ca50d4c2ba4bc55a9f8
Author: Stanislav Chzhen <s.chzhen@adguard.com>
Date:   Tue Aug 15 19:57:34 2023 +0300

    stats: add test

commit 46622f4fdf2775ddaba626b9786af183680e8889
Author: Stanislav Chzhen <s.chzhen@adguard.com>
Date:   Tue Aug 15 15:47:06 2023 +0300

    stats: rm stats collector
This commit is contained in:
Stanislav Chzhen 2023-08-23 17:09:42 +03:00
parent 28cfde9212
commit 4b04c620f2
4 changed files with 171 additions and 101 deletions
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2
internal/stats/http.go
View file

@ -53,7 +53,7 @@ func (s *StatsCtx) handleStats(w http.ResponseWriter, r *http.Request) {
start := time.Now()
var (
resp StatsResp
resp *StatsResp
ok bool
)
func() {

8
internal/stats/stats.go
View file

@ -535,7 +535,8 @@ func (s *StatsCtx) clear() (err error) {
return nil
}
func (s *StatsCtx) loadUnits(limit uint32) (units []*unitDB, firstID uint32) {
// loadUnits returns stored units from the database and current unit ID.
func (s *StatsCtx) loadUnits(limit uint32) (units []*unitDB, curID uint32) {
db := s.db.Load()
if db == nil {
return nil, 0
@ -555,7 +556,6 @@ func (s *StatsCtx) loadUnits(limit uint32) (units []*unitDB, firstID uint32) {
cur := s.curr
var curID uint32
if cur != nil {
curID = cur.id
} else {
@ -564,7 +564,7 @@ func (s *StatsCtx) loadUnits(limit uint32) (units []*unitDB, firstID uint32) {
// Per-hour units.
units = make([]*unitDB, 0, limit)
firstID = curID - limit + 1
firstID := curID - limit + 1
for i := firstID; i != curID; i++ {
u := loadUnitFromDB(tx, i)
if u == nil {
@ -586,7 +586,7 @@ func (s *StatsCtx) loadUnits(limit uint32) (units []*unitDB, firstID uint32) {
log.Fatalf("loaded %d units whilst the desired number is %d", unitsLen, limit)
}
return units, firstID
return units, curID
}
// ShouldCount returns true if request for the host should be counted.

101
internal/stats/stats_internal_test.go
View file

@ -14,24 +14,6 @@ import (
"github.com/stretchr/testify/require"
)
// TODO(e.burkov): Use more realistic data.
func TestStatsCollector(t *testing.T) {
ng := func(_ *unitDB) uint64 { return 0 }
units := make([]*unitDB, 720)
t.Run("hours", func(t *testing.T) {
statsData := statsCollector(units, 0, Hours, ng)
assert.Len(t, statsData, 720)
})
t.Run("days", func(t *testing.T) {
for i := 0; i != 25; i++ {
statsData := statsCollector(units, uint32(i), Days, ng)
require.Lenf(t, statsData, 30, "i=%d", i)
}
})
}
func TestStats_races(t *testing.T) {
var r uint32
idGen := func() (id uint32) { return atomic.LoadUint32(&r) }
@ -103,3 +85,86 @@ func TestStats_races(t *testing.T) {
finWG.Wait()
}
}
func TestStatsCtx_FillCollectedStats_daily(t *testing.T) {
const (
daysCount = 10
timeUnits = "days"
)
s, err := New(Config{
ShouldCountClient: func([]string) bool { return true },
Filename: filepath.Join(t.TempDir(), "./stats.db"),
Limit: time.Hour,
})
require.NoError(t, err)
testutil.CleanupAndRequireSuccess(t, s.Close)
sum := make([][]uint64, resultLast)
sum[RFiltered] = make([]uint64, daysCount)
sum[RSafeBrowsing] = make([]uint64, daysCount)
sum[RParental] = make([]uint64, daysCount)
total := make([]uint64, daysCount)
dailyData := []*unitDB{}
for i := 0; i < daysCount*24; i++ {
n := uint64(i)
nResult := make([]uint64, resultLast)
nResult[RFiltered] = n
nResult[RSafeBrowsing] = n
nResult[RParental] = n
day := i / 24
sum[RFiltered][day] += n
sum[RSafeBrowsing][day] += n
sum[RParental][day] += n
t := n * 3
total[day] += t
dailyData = append(dailyData, &unitDB{
NTotal: t,
NResult: nResult,
})
}
data := &StatsResp{}
// In this way we will not skip first hours.
curID := uint32(daysCount * 24)
s.fillCollectedStats(data, dailyData, curID)
assert.Equal(t, timeUnits, data.TimeUnits)
assert.Equal(t, sum[RFiltered], data.BlockedFiltering)
assert.Equal(t, sum[RSafeBrowsing], data.ReplacedSafebrowsing)
assert.Equal(t, sum[RParental], data.ReplacedParental)
assert.Equal(t, total, data.DNSQueries)
}
func TestStatsCtx_DataFromUnits_month(t *testing.T) {
const hoursInMonth = 720
s, err := New(Config{
ShouldCountClient: func([]string) bool { return true },
Filename: filepath.Join(t.TempDir(), "./stats.db"),
Limit: time.Hour,
})
require.NoError(t, err)
testutil.CleanupAndRequireSuccess(t, s.Close)
units, curID := s.loadUnits(hoursInMonth)
require.Len(t, units, hoursInMonth)
var h uint32
for h = 1; h <= hoursInMonth; h++ {
data := s.dataFromUnits(units[:h], curID)
require.NotNil(t, data)
}
}

161
internal/stats/unit.go
View file

@ -30,13 +30,10 @@ const (
// the statistics unit.
type UnitIDGenFunc func() (id uint32)
// TimeUnit is the unit of measuring time while aggregating the statistics.
type TimeUnit int
// Supported TimeUnit values.
// Supported values of [StatsResp.TimeUnits].
const (
Hours TimeUnit = iota
Days
timeUnitsHours = "hours"
timeUnitsDays = "days"
)
// Result is the resulting code of processing the DNS request.
@ -368,42 +365,6 @@ func convertTopSlice(a []countPair) (m []map[string]uint64) {
return m
}
// numsGetter is a signature for statsCollector argument.
type numsGetter func(u *unitDB) (num uint64)
// statsCollector collects statisctics for the given *unitDB slice by specified
// timeUnit using ng to retrieve data.
func statsCollector(units []*unitDB, firstID uint32, timeUnit TimeUnit, ng numsGetter) (nums []uint64) {
if timeUnit == Hours {
nums = make([]uint64, 0, len(units))
for _, u := range units {
nums = append(nums, ng(u))
}
} else {
// Per time unit counters: 720 hours may span 31 days, so we
// skip data for the first day in this case.
// align_ceil(24)
firstDayID := (firstID + 24 - 1) / 24 * 24
var sum uint64
id := firstDayID
nextDayID := firstDayID + 24
for i := int(firstDayID - firstID); i != len(units); i++ {
sum += ng(units[i])
if id == nextDayID {
nums = append(nums, sum)
sum = 0
nextDayID += 24
}
id++
}
if id <= nextDayID {
nums = append(nums, sum)
}
}
return nums
}
// pairsGetter is a signature for topsCollector argument.
type pairsGetter func(u *unitDB) (pairs []countPair)
@ -442,9 +403,9 @@ func topsCollector(units []*unitDB, max int, ignored *stringutil.Set, pg pairsGe
//
// The total counters (DNS queries, blocked, etc.) are just the sum of data
// for all units.
func (s *StatsCtx) getData(limit uint32) (StatsResp, bool) {
func (s *StatsCtx) getData(limit uint32) (resp *StatsResp, ok bool) {
if limit == 0 {
return StatsResp{
return &StatsResp{
TimeUnits: "days",
TopBlocked: []topAddrs{},
@ -460,38 +421,19 @@ func (s *StatsCtx) getData(limit uint32) (StatsResp, bool) {
}, true
}
timeUnit := Hours
if limit/24 > 7 {
timeUnit = Days
}
units, firstID := s.loadUnits(limit)
units, curID := s.loadUnits(limit)
if units == nil {
return StatsResp{}, false
return &StatsResp{}, false
}
dnsQueries := statsCollector(units, firstID, timeUnit, func(u *unitDB) (num uint64) { return u.NTotal })
if timeUnit != Hours && len(dnsQueries) != int(limit/24) {
log.Fatalf("len(dnsQueries) != limit: %d %d", len(dnsQueries), limit)
}
return s.dataFromUnits(units, dnsQueries, firstID, timeUnit), true
return s.dataFromUnits(units, curID), true
}
// dataFromUnits collects and returns the statistics data.
func (s *StatsCtx) dataFromUnits(
units []*unitDB,
dnsQueries []uint64,
firstID uint32,
timeUnit TimeUnit,
) (resp StatsResp) {
func (s *StatsCtx) dataFromUnits(units []*unitDB, curID uint32) (resp *StatsResp) {
topUpstreamsResponses, topUpstreamsAvgTime := topUpstreamsPairs(units)
data := StatsResp{
DNSQueries: dnsQueries,
BlockedFiltering: statsCollector(units, firstID, timeUnit, func(u *unitDB) (num uint64) { return u.NResult[RFiltered] }),
ReplacedSafebrowsing: statsCollector(units, firstID, timeUnit, func(u *unitDB) (num uint64) { return u.NResult[RSafeBrowsing] }),
ReplacedParental: statsCollector(units, firstID, timeUnit, func(u *unitDB) (num uint64) { return u.NResult[RParental] }),
resp = &StatsResp{
TopQueried: topsCollector(units, maxDomains, s.ignored, func(u *unitDB) (pairs []countPair) { return u.Domains }),
TopBlocked: topsCollector(units, maxDomains, s.ignored, func(u *unitDB) (pairs []countPair) { return u.BlockedDomains }),
TopUpstreamsResponses: topUpstreamsResponses,
@ -499,6 +441,8 @@ func (s *StatsCtx) dataFromUnits(
TopClients: topsCollector(units, maxClients, nil, topClientPairs(s)),
}
s.fillCollectedStats(resp, units, curID)
// Total counters:
sum := unitDB{
NResult: make([]uint64, resultLast),
@ -516,22 +460,83 @@ func (s *StatsCtx) dataFromUnits(
sum.NResult[RParental] += u.NResult[RParental]
}
data.NumDNSQueries = sum.NTotal
data.NumBlockedFiltering = sum.NResult[RFiltered]
data.NumReplacedSafebrowsing = sum.NResult[RSafeBrowsing]
data.NumReplacedSafesearch = sum.NResult[RSafeSearch]
data.NumReplacedParental = sum.NResult[RParental]
resp.NumDNSQueries = sum.NTotal
resp.NumBlockedFiltering = sum.NResult[RFiltered]
resp.NumReplacedSafebrowsing = sum.NResult[RSafeBrowsing]
resp.NumReplacedSafesearch = sum.NResult[RSafeSearch]
resp.NumReplacedParental = sum.NResult[RParental]
if timeN != 0 {
data.AvgProcessingTime = microsecondsToSeconds(float64(sum.TimeAvg / timeN))
resp.AvgProcessingTime = microsecondsToSeconds(float64(sum.TimeAvg / timeN))
}
data.TimeUnits = "hours"
if timeUnit == Days {
data.TimeUnits = "days"
return resp
}
// fillCollectedStats fills data with collected statistics.
func (s *StatsCtx) fillCollectedStats(data *StatsResp, units []*unitDB, curID uint32) {
size := len(units)
data.TimeUnits = timeUnitsHours
daysCount := size / 24
if daysCount > 7 {
size = daysCount
data.TimeUnits = timeUnitsDays
}
return data
data.DNSQueries = make([]uint64, size)
data.BlockedFiltering = make([]uint64, size)
data.ReplacedSafebrowsing = make([]uint64, size)
data.ReplacedParental = make([]uint64, size)
if data.TimeUnits == timeUnitsDays {
s.fillCollectedStatsDaily(data, units, curID, size)
return
}
for i, u := range units {
data.DNSQueries[i] += u.NTotal
data.BlockedFiltering[i] += u.NResult[RFiltered]
data.ReplacedSafebrowsing[i] += u.NResult[RSafeBrowsing]
data.ReplacedParental[i] += u.NResult[RParental]
}
}
// fillCollectedStatsDaily fills data with collected daily statistics. units
// must contain data for the count of days.
func (s *StatsCtx) fillCollectedStatsDaily(
data *StatsResp,
units []*unitDB,
curHour uint32,
days int,
) {
// Per time unit counters: 720 hours may span 31 days, so we skip data for
// the first hours in this case. align_ceil(24)
hours := countHours(curHour, days)
units = units[len(units)-hours:]
for i := 0; i < len(units); i++ {
day := i / 24
u := units[i]
data.DNSQueries[day] += u.NTotal
data.BlockedFiltering[day] += u.NResult[RFiltered]
data.ReplacedSafebrowsing[day] += u.NResult[RSafeBrowsing]
data.ReplacedParental[day] += u.NResult[RParental]
}
}
// countHours returns the number of hours in the last days.
func countHours(curHour uint32, days int) (n int) {
hoursInCurDay := int(curHour % 24)
if hoursInCurDay == 0 {
hoursInCurDay = 24
}
hoursInRestDays := (days - 1) * 24
return hoursInRestDays + hoursInCurDay
}
func topClientPairs(s *StatsCtx) (pg pairsGetter) {