1 files changed, 0 insertions, 240 deletions
diff --git a/usage/main.go b/usage/main.go
deleted file mode 100644
index 526e092..0000000
--- a/usage/main.go
+++ /dev/null
@@ -1,240 +0,0 @@
-package usage
-
-import (
-	"context"
-	"errors"
-	"log"
-	"net"
-	"sync"
-	"time"
-
-	"github.com/cilium/ebpf"
-	"github.com/cilium/ebpf/link"
-	"github.com/jackc/pgx/v5/pgtype"
-	"sinanmohd.com/redq/db"
-)
-
-type UsageStat struct {
-	lastSeen         time.Time
-	lastDbPush       time.Time
-	BandwidthIngress uint64
-	BandwidthEgress  uint64
-	Ingress          uint64
-	Egress           uint64
-}
-
-type usageMap map[uint64]UsageStat
-type Usage struct {
-	Data                    usageMap
-	Mutex                   sync.RWMutex
-	objs                    bpfObjects
-	egressLink, ingressLink link.Link
-}
-
-func Close(u *Usage, queries *db.Queries, ctxDb context.Context) {
-	err := u.UpdateDb(queries, ctxDb, false)
-	if err != nil {
-		log.Printf("updating Database: %s", err)
-	}
-
-	u.objs.Close()
-	u.ingressLink.Close()
-	u.egressLink.Close()
-}
-
-func New(iface *net.Interface) (*Usage, error) {
-	var err error
-	var u Usage
-
-	if err := loadBpfObjects(&u.objs, nil); err != nil {
-		log.Printf("loading objects: %s", err)
-		return nil, err
-	}
-	defer func() {
-		if err != nil {
-			u.objs.Close()
-		}
-	}()
-
-	u.ingressLink, err = link.AttachTCX(link.TCXOptions{
-		Interface: iface.Index,
-		Program:   u.objs.IngressFunc,
-		Attach:    ebpf.AttachTCXIngress,
-	})
-	if err != nil {
-		log.Printf("could not attach TCx program: %s", err)
-		return nil, err
-	}
-	defer func() {
-		if err != nil {
-			u.ingressLink.Close()
-		}
-	}()
-
-	u.egressLink, err = link.AttachTCX(link.TCXOptions{
-		Interface: iface.Index,
-		Program:   u.objs.EgressFunc,
-		Attach:    ebpf.AttachTCXEgress,
-	})
-	if err != nil {
-		log.Printf("could not attach TCx program: %s", err)
-		return nil, err
-	}
-
-	u.Data = make(usageMap)
-	return &u, nil
-}
-
-func (u *Usage) Run(iface *net.Interface, queries *db.Queries, ctxDb context.Context) {
-	bpfTicker := time.NewTicker(time.Second)
-	defer bpfTicker.Stop()
-	dbTicker := time.NewTicker(time.Minute)
-	defer dbTicker.Stop()
-
-	for {
-		select {
-		case <-bpfTicker.C:
-			err := u.update(u.objs.IngressIp4UsageMap, u.objs.EgressIp4UsageMap)
-			if err != nil {
-				log.Printf("updating usageMap: %s", err)
-			}
-		case <-dbTicker.C:
-			err := u.UpdateDb(queries, ctxDb, true)
-			if err != nil {
-				log.Printf("updating Database: %s", err)
-			}
-		}
-	}
-}
-
-func (u *Usage) UpdateDb(queries *db.Queries, ctxDb context.Context, ifExpired bool) error {
-	timeStart := time.Now()
-
-	u.Mutex.Lock()
-	for key, value := range u.Data {
-		if ifExpired && !value.expired(&timeStart) {
-			continue
-		}
-
-		err := queries.EnterUsage(ctxDb, db.EnterUsageParams{
-			Hardwareaddr: int64(key),
-			Starttime: pgtype.Timestamp{
-				Time:  value.lastDbPush,
-				Valid: true,
-			},
-			Stoptime: pgtype.Timestamp{
-				Time:  value.lastSeen,
-				Valid: true,
-			},
-			Egress:  int64(value.Egress),
-			Ingress: int64(value.Ingress),
-		})
-		if err != nil {
-			return err
-		}
-
-		delete(u.Data, key)
-	}
-	u.Mutex.Unlock()
-
-	return nil
-}
-
-func (us *UsageStat) expired(timeStart *time.Time) bool {
-	timeDiff := timeStart.Sub(us.lastSeen)
-	if timeDiff > time.Minute {
-		return true
-	}
-
-	timeDiff = timeStart.Sub(us.lastDbPush)
-	if timeDiff > time.Hour {
-		return true
-	}
-
-	return false
-}
-
-func (u *Usage) update(ingress *ebpf.Map, egress *ebpf.Map) error {
-	timeStart := time.Now()
-	batchKeys := make([]uint64, 4096)
-	batchValues := make([]uint64, 4096)
-	var key uint64
-
-	u.Mutex.Lock()
-	for key, value := range u.Data {
-		value.BandwidthIngress = 0
-		value.BandwidthEgress = 0
-		u.Data[key] = value
-	}
-	u.Mutex.Unlock()
-
-	cursor := ebpf.MapBatchCursor{}
-	for {
-		_, err := ingress.BatchLookupAndDelete(&cursor, batchKeys, batchValues, nil)
-		u.Mutex.Lock()
-		for i := range batchKeys {
-			if batchValues[i] == 0 {
-				continue
-			}
-
-			key = batchKeys[i]
-			usage, ok := u.Data[key]
-			if ok {
-				usage.BandwidthIngress = batchValues[i]
-				usage.Ingress += batchValues[i]
-				usage.lastSeen = timeStart
-				u.Data[key] = usage
-			} else {
-				u.Data[key] = UsageStat{
-					BandwidthIngress: batchValues[i],
-					Ingress:          batchValues[i],
-					lastDbPush:       timeStart,
-					lastSeen:         timeStart,
-				}
-			}
-		}
-		u.Mutex.Unlock()
-
-		if errors.Is(err, ebpf.ErrKeyNotExist) {
-			break
-		} else if err != nil {
-			return err
-		}
-	}
-
-	cursor = ebpf.MapBatchCursor{}
-	for {
-		_, err := egress.BatchLookupAndDelete(&cursor, batchKeys, batchValues, nil)
-		u.Mutex.Lock()
-		for i := range batchKeys {
-			if batchValues[i] == 0 {
-				continue
-			}
-
-			key = batchKeys[i]
-			usage, ok := u.Data[key]
-			if ok {
-				usage.BandwidthEgress = batchValues[i]
-				usage.Egress += batchValues[i]
-				usage.lastSeen = timeStart
-				u.Data[key] = usage
-			} else {
-				u.Data[key] = UsageStat{
-					BandwidthEgress: batchValues[i],
-					Egress:          batchValues[i],
-					lastDbPush:      timeStart,
-					lastSeen:        timeStart,
-				}
-			}
-		}
-		u.Mutex.Unlock()
-
-		if errors.Is(err, ebpf.ErrKeyNotExist) {
-			break
-		} else if err != nil {
-			return err
-		}
-	}
-
-	return nil
-}