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package processing
// DCSO FEVER
// Copyright (c) 2017, 2019, DCSO GmbH
import (
"encoding/json"
"fmt"
"math/rand"
"sync"
"testing"
"time"
"github.com/DCSO/fever/types"
)
const (
numOfTestFlowItems = 200000
)
func makeFlowEvent() types.Entry {
e := types.Entry{
SrcIP: fmt.Sprintf("10.0.0.%d", rand.Intn(250)),
SrcPort: []int64{1, 2, 3, 4, 5}[rand.Intn(5)],
DestIP: fmt.Sprintf("10.0.0.%d", rand.Intn(250)),
DestPort: []int64{11, 12, 13, 14, 15}[rand.Intn(5)],
Timestamp: time.Now().Format(types.SuricataTimestampFormat),
EventType: "flow",
Proto: "TCP",
BytesToClient: int64(rand.Intn(10000)),
BytesToServer: int64(rand.Intn(10000)),
PktsToClient: int64(rand.Intn(100)),
PktsToServer: int64(rand.Intn(100)),
}
jsonBytes, _ := json.Marshal(e)
e.JSONLine = string(jsonBytes)
return e
}
func TestFlowAggregator(t *testing.T) {
rand.Seed(time.Now().UTC().UnixNano())
outChan := make(chan types.Entry)
feedWaitChan := make(chan bool)
closeChan := make(chan bool)
f := MakeFlowAggregator(1*time.Second, outChan)
var procFlowsLock sync.Mutex
var processedFlows int
var eTotalPktsToClient int64
var eTotalPktsToServer int64
var eTotalBytesToClient int64
var eTotalBytesToServer int64
var rTotalPktsToClient int64
var rTotalPktsToServer int64
var rTotalBytesToClient int64
var rTotalBytesToServer int64
go func(pc *int64, ps *int64, bc *int64, bs *int64) {
for {
select {
case e := <-outChan:
var out struct {
SrcPort []int `json:"src_port"`
Flow struct {
BytesToServer int64 `json:"bytes_toserver"`
BytesToClient int64 `json:"bytes_toclient"`
PktsToServer int64 `json:"pkts_toserver"`
PktsToClient int64 `json:"pkts_toclient"`
} `json:"flow"`
}
err := json.Unmarshal([]byte(e.JSONLine), &out)
if err != nil {
t.Fail()
}
// we count the source ports to determine the number of
// aggregated flows
procFlowsLock.Lock()
processedFlows += len(out.SrcPort)
procFlowsLock.Unlock()
*bc += out.Flow.BytesToClient
*bs += out.Flow.BytesToServer
*pc += out.Flow.PktsToClient
*ps += out.Flow.PktsToServer
case <-closeChan:
close(feedWaitChan)
return
}
}
}(&rTotalPktsToClient, &rTotalPktsToServer, &rTotalBytesToClient,
&rTotalBytesToServer)
f.Run()
for i := 0; i < numOfTestFlowItems; i++ {
ev := makeFlowEvent()
eTotalBytesToClient += ev.BytesToClient
eTotalBytesToServer += ev.BytesToServer
eTotalPktsToClient += ev.PktsToClient
eTotalPktsToServer += ev.PktsToServer
f.Consume(&ev)
}
go func() {
for {
procFlowsLock.Lock()
if processedFlows == numOfTestFlowItems {
procFlowsLock.Unlock()
break
}
procFlowsLock.Unlock()
time.Sleep(100 * time.Millisecond)
}
close(closeChan)
}()
<-feedWaitChan
consumeWaitChan := make(chan bool)
f.Stop(consumeWaitChan)
<-consumeWaitChan
if eTotalBytesToClient != rTotalBytesToClient {
t.Fatalf("total bytes to client differ: %d/%d", eTotalBytesToClient,
rTotalBytesToClient)
}
if eTotalBytesToServer != rTotalBytesToServer {
t.Fatalf("total bytes to server differ: %d/%d", eTotalBytesToServer,
rTotalBytesToServer)
}
if eTotalPktsToClient != rTotalPktsToClient {
t.Fatalf("total pkts to client differ: %d/%d", eTotalPktsToClient,
rTotalPktsToClient)
}
if eTotalPktsToServer != rTotalPktsToServer {
t.Fatalf("total pkts to server differ: %d/%d", eTotalPktsToServer,
rTotalPktsToServer)
}
}
func TestFlowAggregatorWithDispatch(t *testing.T) {
rand.Seed(time.Now().UTC().UnixNano())
outChan := make(chan types.Entry)
dbChan := make(chan types.Entry, numOfTestFlowItems)
feedWaitChan := make(chan bool)
closeChan := make(chan bool)
f := MakeFlowAggregator(1*time.Second, outChan)
var procFlowsLock sync.Mutex
var processedFlows int
var eTotalPktsToClient int64
var eTotalPktsToServer int64
var eTotalBytesToClient int64
var eTotalBytesToServer int64
var rTotalPktsToClient int64
var rTotalPktsToServer int64
var rTotalBytesToClient int64
var rTotalBytesToServer int64
go func(pc *int64, ps *int64, bc *int64, bs *int64) {
for {
select {
case e := <-outChan:
var out struct {
SrcPort []int `json:"src_port"`
Flow struct {
BytesToServer int64 `json:"bytes_toserver"`
BytesToClient int64 `json:"bytes_toclient"`
PktsToServer int64 `json:"pkts_toserver"`
PktsToClient int64 `json:"pkts_toclient"`
} `json:"flow"`
}
err := json.Unmarshal([]byte(e.JSONLine), &out)
if err != nil {
t.Fail()
}
// we count the source ports to determine the number of
// aggregated flows
procFlowsLock.Lock()
processedFlows += len(out.SrcPort)
procFlowsLock.Unlock()
*bc += out.Flow.BytesToClient
*bs += out.Flow.BytesToServer
*pc += out.Flow.PktsToClient
*ps += out.Flow.PktsToServer
case <-closeChan:
close(feedWaitChan)
return
}
}
}(&rTotalPktsToClient, &rTotalPktsToServer, &rTotalBytesToClient,
&rTotalBytesToServer)
d := MakeHandlerDispatcher(dbChan)
d.RegisterHandler(f)
f.Run()
for i := 0; i < numOfTestFlowItems; i++ {
ev := makeFlowEvent()
eTotalBytesToClient += ev.BytesToClient
eTotalBytesToServer += ev.BytesToServer
eTotalPktsToClient += ev.PktsToClient
eTotalPktsToServer += ev.PktsToServer
d.Dispatch(&ev)
}
go func() {
for {
procFlowsLock.Lock()
if processedFlows == numOfTestFlowItems {
procFlowsLock.Unlock()
break
}
procFlowsLock.Unlock()
time.Sleep(100 * time.Millisecond)
}
close(closeChan)
}()
<-feedWaitChan
consumeWaitChan := make(chan bool)
f.Stop(consumeWaitChan)
<-consumeWaitChan
if len(dbChan) != numOfTestFlowItems {
t.Fatalf("not all input events forwarded: %d", len(dbChan))
}
close(dbChan)
if eTotalBytesToClient != rTotalBytesToClient {
t.Fatalf("total bytes to client differ: %d/%d", eTotalBytesToClient,
rTotalBytesToClient)
}
if eTotalBytesToServer != rTotalBytesToServer {
t.Fatalf("total bytes to server differ: %d/%d", eTotalBytesToServer,
rTotalBytesToServer)
}
if eTotalPktsToClient != rTotalPktsToClient {
t.Fatalf("total pkts to client differ: %d/%d", eTotalPktsToClient,
rTotalPktsToClient)
}
if eTotalPktsToServer != rTotalPktsToServer {
t.Fatalf("total pkts to server differ: %d/%d", eTotalPktsToServer,
rTotalPktsToServer)
}
}
|
