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exec_test_helper.go
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// SPDX-License-Identifier: Apache-2.0
// Copyright Authors of Tetragon
package exec
import (
"sync/atomic"
"testing"
"time"
"github.com/cilium/tetragon/api/v1/tetragon"
tetragonAPI "github.com/cilium/tetragon/pkg/api/processapi"
"github.com/cilium/tetragon/pkg/defaults"
"github.com/cilium/tetragon/pkg/eventcache"
"github.com/cilium/tetragon/pkg/option"
"github.com/cilium/tetragon/pkg/process"
"github.com/cilium/tetragon/pkg/reader/notify"
"github.com/cilium/tetragon/pkg/server"
"github.com/cilium/tetragon/pkg/watcher"
"github.com/stretchr/testify/assert"
"google.golang.org/protobuf/types/known/wrapperspb"
corev1 "k8s.io/api/core/v1"
v1 "k8s.io/apimachinery/pkg/apis/meta/v1"
)
const (
CacheTimerMs = 1
)
var (
AllEvents []*tetragon.GetEventsResponse
BasePid uint32 = 46987
dummyPod = &corev1.Pod{
ObjectMeta: v1.ObjectMeta{
Namespace: "fake_pod_namespace",
Name: "fake_pod_name",
},
Status: corev1.PodStatus{
ContainerStatuses: []corev1.ContainerStatus{
{
ContainerID: "docker://fake_container_container_id",
Name: "fake_container_name",
Image: "fake_container_image",
ImageID: "fake_container_image_id",
State: corev1.ContainerState{
Running: &corev1.ContainerStateRunning{
StartedAt: v1.Time{
Time: time.Unix(21034995089403, 0),
},
},
},
},
},
},
}
)
type DummyNotifier[EXEC notify.Message, EXIT notify.Message] struct {
t *testing.T
ch chan bool
}
func NewDummyNotifier[EXEC notify.Message, EXIT notify.Message](t *testing.T) DummyNotifier[EXEC, EXIT] {
ch := make(chan bool)
return DummyNotifier[EXEC, EXIT]{t: t, ch: ch}
}
// Wait for specified number of events from notifier
func (n DummyNotifier[EXEC, EXIT]) WaitNotifier(events int) {
// Leave extra 100ms timeout for slow servers hiccups
ms := time.Duration((option.Config.EventCacheNumRetries + 100) * CacheTimerMs)
ticker := time.NewTicker(time.Millisecond * ms)
defer ticker.Stop()
for {
select {
case <-ticker.C:
return
case <-n.ch:
events--
if events == 0 {
return
}
}
}
}
// Kick from notifier that unblocks one event for WaitNotifier
func (n DummyNotifier[EXEC, EXIT]) KickNotifier() {
select {
case n.ch <- true:
default:
}
}
func (n DummyNotifier[EXEC, EXIT]) AddListener(_ server.Listener) {}
func (n DummyNotifier[EXEC, EXIT]) RemoveListener(_ server.Listener) {}
func (n DummyNotifier[EXEC, EXIT]) NotifyListener(original interface{}, processed *tetragon.GetEventsResponse) {
switch v := original.(type) {
case EXEC, EXIT:
if processed != nil {
AllEvents = append(AllEvents, processed)
n.KickNotifier()
} else {
n.t.Fatalf("Processed arg is nil in NotifyListener with type %T", v)
}
default:
n.t.Fatalf("Unknown type in NotifyListener = %T", v)
}
}
func CreateEvents[EXEC notify.Message, EXIT notify.Message](Pid uint32, Ktime uint64, ParentPid uint32, ParentKtime uint64, Docker string) (*EXEC, *EXEC, *EXEC, *EXIT) {
// Create a parent event to hand events off of and convince execCache that parents are known. In order for this to
// work we set the Pid == 1 here so that system believes this is the root of the tree.
rootEv := tetragonAPI.MsgExecveEventUnix{
Msg: &tetragonAPI.MsgExecveEvent{
Common: tetragonAPI.MsgCommon{
Op: 5,
Flags: 0,
Pad_v2: [2]uint8{0, 0},
Size: 326,
Ktime: 0,
},
Kube: tetragonAPI.MsgK8s{
Cgrpid: 0,
},
Parent: tetragonAPI.MsgExecveKey{
Pid: 0,
Pad: 0,
Ktime: 0,
},
ParentFlags: 0,
},
Kube: tetragonAPI.MsgK8sUnix{
Docker: "",
},
Process: tetragonAPI.MsgProcess{
Size: 78,
PID: 1,
NSPID: 0,
SecureExec: 0,
UID: 1010,
AUID: 1010,
Flags: 16385,
Ktime: 0,
Filename: "init",
Args: "",
},
}
var execRootMsg EXEC
execRootMsg = execRootMsg.Cast(rootEv).(EXEC)
parentEv := tetragonAPI.MsgExecveEventUnix{
Msg: &tetragonAPI.MsgExecveEvent{
Common: tetragonAPI.MsgCommon{
Op: 5,
Flags: 0,
Pad_v2: [2]uint8{0, 0},
Size: 326,
Ktime: 21034975106173,
},
Kube: tetragonAPI.MsgK8s{
Cgrpid: 0,
},
Parent: tetragonAPI.MsgExecveKey{
Pid: 1,
Pad: 0,
Ktime: 0,
},
ParentFlags: 0,
},
Kube: tetragonAPI.MsgK8sUnix{
Docker: Docker,
},
Process: tetragonAPI.MsgProcess{
Size: 78,
PID: ParentPid,
NSPID: 0,
SecureExec: 0,
UID: 1010,
AUID: 1010,
Flags: 16385,
Ktime: ParentKtime,
Filename: "/usr/bin/bash",
Args: "--color=auto\x00/home/apapag/tetragon",
},
}
var execParentMsg EXEC
execParentMsg = execParentMsg.Cast(parentEv).(EXEC)
execEv := tetragonAPI.MsgExecveEventUnix{
Msg: &tetragonAPI.MsgExecveEvent{
Common: tetragonAPI.MsgCommon{
Op: 5,
Flags: 0,
Pad_v2: [2]uint8{0, 0},
Size: 326,
Ktime: 21034975106173,
},
Kube: tetragonAPI.MsgK8s{
Cgrpid: 0,
},
Parent: tetragonAPI.MsgExecveKey{
Pid: ParentPid,
Pad: 0,
Ktime: ParentKtime,
},
ParentFlags: 0,
},
Kube: tetragonAPI.MsgK8sUnix{
Docker: Docker,
},
Process: tetragonAPI.MsgProcess{
Size: 78,
PID: Pid,
NSPID: 0,
UID: 1010,
AUID: 1010,
Flags: 16385,
Ktime: Ktime,
Filename: "/usr/bin/ls",
Args: "--color=auto\x00/home/apapag/tetragon",
},
}
var execMsg EXEC
execMsg = execMsg.Cast(execEv).(EXEC)
exitEv := tetragonAPI.MsgExitEvent{
Common: tetragonAPI.MsgCommon{
Op: 7,
Flags: 0,
Pad_v2: [2]uint8{0, 0},
Size: 40,
Ktime: 21034976281104,
},
ProcessKey: tetragonAPI.MsgExecveKey{
Pid: Pid,
Pad: 0,
Ktime: Ktime,
},
Info: tetragonAPI.MsgExitInfo{
Code: 0,
Tid: Pid,
},
}
var exitMsg EXIT
exitMsg = exitMsg.Cast(exitEv).(EXIT)
return &execRootMsg, &execParentMsg, &execMsg, &exitMsg
}
func CreateCloneEvents[CLONE notify.Message, EXIT notify.Message](Pid uint32, Ktime uint64, ParentPid uint32, ParentKtime uint64) (*CLONE, *EXIT) {
cloneEv := tetragonAPI.MsgCloneEvent{
Common: tetragonAPI.MsgCommon{
Op: 23,
Flags: 0,
Pad_v2: [2]uint8{0, 0},
Size: 326,
Ktime: 21034975126173,
},
Parent: tetragonAPI.MsgExecveKey{
Pid: ParentPid,
Pad: 0,
Ktime: ParentKtime,
},
PID: Pid,
NSPID: 0,
Flags: 16385,
Ktime: Ktime,
}
var cloneMsg CLONE
cloneMsg = cloneMsg.Cast(cloneEv).(CLONE)
exitEv := tetragonAPI.MsgExitEvent{
Common: tetragonAPI.MsgCommon{
Op: 7,
Flags: 0,
Pad_v2: [2]uint8{0, 0},
Size: 40,
Ktime: 21034976291104,
},
ProcessKey: tetragonAPI.MsgExecveKey{
Pid: Pid,
Pad: 0,
Ktime: Ktime,
},
Info: tetragonAPI.MsgExitInfo{
Code: 0,
Tid: Pid,
},
}
var exitMsg EXIT
exitMsg = exitMsg.Cast(exitEv).(EXIT)
return &cloneMsg, &exitMsg
}
func CreateAncestorEvents[EXEC notify.Message, EXIT notify.Message](
Filename string,
Pid uint32,
Ktime uint64,
ParentPid uint32,
ParentKtime uint64,
CleanupKtime uint64,
Docker string,
) (*EXEC, *EXIT) {
execEv := tetragonAPI.MsgExecveEventUnix{
Msg: &tetragonAPI.MsgExecveEvent{
Common: tetragonAPI.MsgCommon{
Op: 5,
Flags: 0,
Pad_v2: [2]uint8{0, 0},
Size: 326,
Ktime: Ktime + 1200000,
},
Kube: tetragonAPI.MsgK8s{
Cgrpid: 0,
},
Parent: tetragonAPI.MsgExecveKey{
Pid: ParentPid,
Pad: 0,
Ktime: ParentKtime,
},
ParentFlags: 0,
CleanupProcess: tetragonAPI.MsgExecveKey{
Pid: Pid,
Pad: 0,
Ktime: CleanupKtime,
},
},
Kube: tetragonAPI.MsgK8sUnix{
Docker: Docker,
},
Process: tetragonAPI.MsgProcess{
Size: 78,
PID: Pid,
NSPID: 0,
UID: 1010,
AUID: 1010,
Flags: 16385,
Ktime: Ktime,
Filename: Filename,
Args: "",
},
}
var execMsg EXEC
execMsg = execMsg.Cast(execEv).(EXEC)
exitEv := tetragonAPI.MsgExitEvent{
Common: tetragonAPI.MsgCommon{
Op: 7,
Flags: 0,
Pad_v2: [2]uint8{0, 0},
Size: 40,
Ktime: Ktime + 20000000,
},
ProcessKey: tetragonAPI.MsgExecveKey{
Pid: Pid,
Pad: 0,
Ktime: Ktime,
},
Info: tetragonAPI.MsgExitInfo{
Code: 0,
Tid: Pid,
},
}
var exitMsg EXIT
exitMsg = exitMsg.Cast(exitEv).(EXIT)
return &execMsg, &exitMsg
}
func InitEnv[EXEC notify.Message, EXIT notify.Message](t *testing.T, watcher watcher.PodAccessor) DummyNotifier[EXEC, EXIT] {
if err := process.InitCache(watcher, 65536, defaults.DefaultProcessCacheGCInterval); err != nil {
t.Fatalf("failed to call process.InitCache %s", err)
}
dn := NewDummyNotifier[EXEC, EXIT](t)
// Exec cache is always needed to ensure events have an associated Process{}
eventcache.NewWithTimer(dn, time.Millisecond*CacheTimerMs)
return dn
}
func GetProcessRefcntFromCache(t *testing.T, Pid uint32, Ktime uint64) uint32 {
procID := process.GetProcessID(Pid, Ktime)
proc, err := process.Get(procID)
if err == nil {
return proc.RefGet()
}
t.Fatalf("failed to find a process in the procCache pid: %d, ktime: %d, ID: %s ", Pid, Ktime, err)
return 0
}
func GetEvents(t *testing.T, events []*tetragon.GetEventsResponse) (*tetragon.ProcessExec, *tetragon.ProcessExit) {
assert.Equal(t, len(events), 2)
var execEv *tetragon.ProcessExec
var exitEv *tetragon.ProcessExit
if events[0].GetProcessExec() != nil {
execEv = events[0].GetProcessExec()
exitEv = events[1].GetProcessExit()
} else {
exitEv = events[0].GetProcessExit()
execEv = events[1].GetProcessExec()
}
return execEv, exitEv
}
func CheckProcessEqual(t *testing.T, p1, p2 *tetragon.Process) {
assert.Equal(t, p1.ExecId, p2.ExecId)
assert.Equal(t, p1.Pid, p2.Pid)
assert.Equal(t, p1.Uid, p2.Uid)
assert.Equal(t, p1.Cwd, p2.Cwd)
assert.Equal(t, p1.Binary, p2.Binary)
assert.Equal(t, p1.Arguments, p2.Arguments)
assert.Equal(t, p1.Flags, p2.Flags)
assert.Equal(t, p1.StartTime, p2.StartTime)
assert.Equal(t, p1.Auid, p2.Auid)
assert.Equal(t, p1.Pod, p2.Pod)
assert.Equal(t, p1.Docker, p2.Docker)
assert.Equal(t, p1.ParentExecId, p2.ParentExecId)
assert.Equal(t, p1.Cap, p2.Cap)
assert.Equal(t, p1.Ns, p2.Ns)
}
func CheckExecEvents(t *testing.T, events []*tetragon.GetEventsResponse, parentPid uint32, currentPid uint32) {
assert.Equal(t, len(events), 4)
var execRootEv, execParentEv, execEv *tetragon.ProcessExec
var exitEv *tetragon.ProcessExit
for _, ev := range events {
if ev.GetProcessExec() != nil {
tmp := ev.GetProcessExec()
if tmp.Process.Pid.Value == uint32(1) {
execRootEv = tmp
} else if tmp.Process.Pid.Value == uint32(parentPid) {
execParentEv = tmp
} else if tmp.Process.Pid.Value == uint32(currentPid) {
execEv = tmp
}
} else {
exitEv = ev.GetProcessExit()
}
}
assert.NotNil(t, execRootEv)
assert.NotNil(t, execParentEv)
assert.NotNil(t, execEv)
assert.NotNil(t, exitEv)
assert.Equal(t, GetProcessRefcntFromCache(t, 1, 0), uint32(2))
assert.Equal(t, GetProcessRefcntFromCache(t, parentPid, 75200000000), uint32(1))
assert.Equal(t, GetProcessRefcntFromCache(t, currentPid, 21034975089403), uint32(0))
// check parents
assert.Nil(t, execRootEv.Parent)
assert.NotNil(t, execParentEv.Parent)
assert.NotNil(t, execEv.Parent)
assert.NotNil(t, exitEv.Parent)
// success
CheckProcessEqual(t, execEv.Process, exitEv.Process)
// success
CheckProcessEqual(t, execEv.Parent, exitEv.Parent)
}
func GrpcExecOutOfOrder[EXEC notify.Message, EXIT notify.Message](t *testing.T) {
AllEvents = nil
watcher := watcher.NewFakeK8sWatcher(nil)
dn := InitEnv[EXEC, EXIT](t, watcher)
parentPid := atomic.AddUint32(&BasePid, 1)
currentPid := atomic.AddUint32(&BasePid, 1)
execRoot, execParent, execMsg, exitMsg := CreateEvents[EXEC, EXIT](currentPid, 21034975089403, parentPid, 75200000000, "")
if e := (*execRoot).HandleMessage(); e != nil {
AllEvents = append(AllEvents, e)
}
if e := (*execParent).HandleMessage(); e != nil {
AllEvents = append(AllEvents, e)
}
if e := (*exitMsg).HandleMessage(); e != nil {
AllEvents = append(AllEvents, e)
}
if e := (*execMsg).HandleMessage(); e != nil {
AllEvents = append(AllEvents, e)
}
dn.WaitNotifier(4)
CheckExecEvents(t, AllEvents, parentPid, currentPid)
}
func GrpcExecInOrder[EXEC notify.Message, EXIT notify.Message](t *testing.T) {
AllEvents = nil
watcher := watcher.NewFakeK8sWatcher(nil)
InitEnv[EXEC, EXIT](t, watcher)
parentPid := atomic.AddUint32(&BasePid, 1)
currentPid := atomic.AddUint32(&BasePid, 1)
execRoot, execParent, execMsg, exitMsg := CreateEvents[EXEC, EXIT](currentPid, 21034975089403, parentPid, 75200000000, "")
if e := (*execRoot).HandleMessage(); e != nil {
AllEvents = append(AllEvents, e)
}
if e := (*execParent).HandleMessage(); e != nil {
AllEvents = append(AllEvents, e)
}
if e := (*execMsg).HandleMessage(); e != nil {
AllEvents = append(AllEvents, e)
}
if e := (*exitMsg).HandleMessage(); e != nil {
AllEvents = append(AllEvents, e)
}
CheckExecEvents(t, AllEvents, parentPid, currentPid)
}
func GrpcExecMisingParent[EXEC notify.Message, EXIT notify.Message](t *testing.T) {
AllEvents = nil
watcher := watcher.NewFakeK8sWatcher(nil)
dn := InitEnv[EXEC, EXIT](t, watcher)
parentPid := atomic.AddUint32(&BasePid, 1)
currentPid := atomic.AddUint32(&BasePid, 1)
_, _, execMsg, _ := CreateEvents[EXEC, EXIT](currentPid, 21034975089403, parentPid, 75200000000, "")
if e := (*execMsg).HandleMessage(); e != nil {
AllEvents = append(AllEvents, e)
}
dn.WaitNotifier(1)
if !assert.Equal(t, 1, len(AllEvents)) {
t.FailNow()
}
execEv := AllEvents[0].GetProcessExec()
assert.NotNil(t, execEv)
assert.Equal(t, GetProcessRefcntFromCache(t, currentPid, 21034975089403), uint32(1))
assert.Nil(t, execEv.Parent)
}
func GrpcMissingExec[EXEC notify.Message, EXIT notify.Message](t *testing.T) {
AllEvents = nil
watcher := watcher.NewFakeK8sWatcher(nil)
dn := InitEnv[EXEC, EXIT](t, watcher)
parentPid := atomic.AddUint32(&BasePid, 1)
currentPid := atomic.AddUint32(&BasePid, 1)
_, _, _, exitMsg := CreateEvents[EXEC, EXIT](currentPid, 21034975089403, parentPid, 75200000000, "")
if e := (*exitMsg).HandleMessage(); e != nil {
AllEvents = append(AllEvents, e)
}
dn.WaitNotifier(2)
assert.Equal(t, len(AllEvents), 1)
ev := AllEvents[0]
assert.NotNil(t, ev.GetProcessExit())
// this events misses process info
assert.Equal(t, ev.GetProcessExit().Process.ExecId, "")
assert.Equal(t, ev.GetProcessExit().Process.Binary, "")
// but should have a correct Pid
assert.Equal(t, ev.GetProcessExit().Process.Pid, &wrapperspb.UInt32Value{Value: currentPid})
}
func GrpcExecParentOutOfOrder[EXEC notify.Message, EXIT notify.Message](t *testing.T) {
AllEvents = nil
watcher := watcher.NewFakeK8sWatcher(nil)
InitEnv[EXEC, EXIT](t, watcher)
parentPid := atomic.AddUint32(&BasePid, 1)
currentPid := atomic.AddUint32(&BasePid, 1)
execRoot, execParent, execMsg, exitMsg := CreateEvents[EXEC, EXIT](currentPid, 21034975089403, parentPid, 75200000000, "")
// create some corrent events to have parents
(*execRoot).HandleMessage()
(*execParent).HandleMessage()
if e := (*execMsg).HandleMessage(); e != nil {
AllEvents = append(AllEvents, e)
}
if e := (*exitMsg).HandleMessage(); e != nil {
AllEvents = append(AllEvents, e)
}
ev1, ev2 := GetEvents(t, AllEvents)
// success
CheckProcessEqual(t, ev1.Process, ev2.Process)
// success
CheckProcessEqual(t, ev1.Parent, ev2.Parent)
}
func CheckCloneEvents(t *testing.T, events []*tetragon.GetEventsResponse, currentPid uint32, clonePid uint32) {
assert.Equal(t, len(events), 3)
foundExitExecProcess := false
foundExitCloneProcess := false
for _, ev := range events {
if ev.GetProcessExec() != nil {
execEv := ev.GetProcessExec()
assert.Equal(t, execEv.Process.Pid.Value, currentPid)
} else if ev.GetProcessExit() != nil {
exitEv := ev.GetProcessExit()
assert.NotEqual(t, exitEv.Process.ExecId, "") // ensure not empty
assert.NotEqual(t, exitEv.Process.Binary, "") // ensure not empty
switch exitEv.Process.Pid.Value {
case currentPid:
foundExitExecProcess = true
case clonePid:
foundExitCloneProcess = true
default:
assert.Fail(t, "unknown event PID")
}
} else {
assert.Fail(t, "unknown event type")
}
}
assert.True(t, foundExitExecProcess)
assert.True(t, foundExitCloneProcess)
}
func GrpcExecCloneInOrder[EXEC notify.Message, CLONE notify.Message, EXIT notify.Message](t *testing.T) {
AllEvents = nil
watcher := watcher.NewFakeK8sWatcher(nil)
InitEnv[EXEC, EXIT](t, watcher)
parentPid := atomic.AddUint32(&BasePid, 1)
currentPid := atomic.AddUint32(&BasePid, 1)
clonePid := atomic.AddUint32(&BasePid, 1)
execRoot, execParent, execMsg, exitMsg := CreateEvents[EXEC, EXIT](currentPid, 21034975089403, parentPid, 75200000000, "")
cloneMsg, exitCloneMsg := CreateCloneEvents[CLONE, EXIT](clonePid, 21034995089403, currentPid, 21034975089403)
// create some corrent events to have parents
(*execRoot).HandleMessage()
(*execParent).HandleMessage()
if e := (*execMsg).HandleMessage(); e != nil {
AllEvents = append(AllEvents, e)
}
(*cloneMsg).HandleMessage() // does not return anything and not produces any event
if e := (*exitCloneMsg).HandleMessage(); e != nil {
AllEvents = append(AllEvents, e)
}
if e := (*exitMsg).HandleMessage(); e != nil {
AllEvents = append(AllEvents, e)
}
CheckCloneEvents(t, AllEvents, currentPid, clonePid)
}
func GrpcExecCloneOutOfOrder[EXEC notify.Message, CLONE notify.Message, EXIT notify.Message](t *testing.T) {
AllEvents = nil
watcher := watcher.NewFakeK8sWatcher(nil)
dn := InitEnv[EXEC, EXIT](t, watcher)
parentPid := atomic.AddUint32(&BasePid, 1)
currentPid := atomic.AddUint32(&BasePid, 1)
clonePid := atomic.AddUint32(&BasePid, 1)
execRoot, execParent, execMsg, exitMsg := CreateEvents[EXEC, EXIT](currentPid, 21034975089403, parentPid, 75200000000, "")
cloneMsg, exitCloneMsg := CreateCloneEvents[CLONE, EXIT](clonePid, 21034995089403, currentPid, 21034975089403)
// create some corrent events to have parents
(*execRoot).HandleMessage()
(*execParent).HandleMessage()
if e := (*execMsg).HandleMessage(); e != nil {
AllEvents = append(AllEvents, e)
}
if e := (*exitCloneMsg).HandleMessage(); e != nil {
AllEvents = append(AllEvents, e)
}
(*cloneMsg).HandleMessage() // does not return anything and not produces any event
if e := (*exitMsg).HandleMessage(); e != nil {
AllEvents = append(AllEvents, e)
}
dn.WaitNotifier(3)
CheckCloneEvents(t, AllEvents, currentPid, clonePid)
}
func GrpcParentInOrder[EXEC notify.Message, EXIT notify.Message](t *testing.T) {
AllEvents = nil
watcher := watcher.NewFakeK8sWatcher(nil)
InitEnv[EXEC, EXIT](t, watcher)
parentPid := atomic.AddUint32(&BasePid, 1)
currentPid := atomic.AddUint32(&BasePid, 1)
rootMsg, _, parentExecMsg, parentExitMsg := CreateEvents[EXEC, EXIT](parentPid, 75200000000, 1, 0, "")
_, _, execMsg, exitMsg := CreateEvents[EXEC, EXIT](currentPid, 21034975089403, parentPid, 75200000000, "")
(*rootMsg).HandleMessage()
if e := (*parentExecMsg).HandleMessage(); e != nil {
AllEvents = append(AllEvents, e)
}
if e := (*execMsg).HandleMessage(); e != nil {
AllEvents = append(AllEvents, e)
}
if e := (*exitMsg).HandleMessage(); e != nil {
AllEvents = append(AllEvents, e)
}
if e := (*parentExitMsg).HandleMessage(); e != nil {
AllEvents = append(AllEvents, e)
}
assert.Equal(t, len(AllEvents), 4)
parentExecEv := AllEvents[0].GetProcessExec()
currentExecEv := AllEvents[1].GetProcessExec()
currentExitEv := AllEvents[2].GetProcessExit()
parentExitEv := AllEvents[3].GetProcessExit()
assert.NotNil(t, parentExecEv)
assert.NotNil(t, currentExecEv)
assert.NotNil(t, currentExitEv)
assert.NotNil(t, parentExitEv)
// 1st event: exec from parent
// 1. should match pid of parent
// 2. has parent
assert.Equal(t, parentExecEv.Process.Pid.Value, parentPid)
assert.NotNil(t, parentExecEv.Parent)
// 2nd event: exec from child
// 1. should match pid of child
// 2. parent pid should match previous event's pid
assert.Equal(t, currentExecEv.Process.Pid.Value, currentPid)
assert.Equal(t, currentExecEv.Parent.Pid.Value, parentPid)
// 3rd event: exit from child
// 1. should match pid of child
// 2. parent pid should match previous event's pid
assert.Equal(t, currentExitEv.Process.Pid.Value, currentPid)
assert.Equal(t, currentExitEv.Parent.Pid.Value, parentPid)
// 4th event: exit from parent
// 1. should match pid of parent
// 2. has parent
assert.Equal(t, parentExitEv.Process.Pid.Value, parentPid)
assert.NotNil(t, parentExitEv.Parent)
}
func CheckPodEvents(t *testing.T, events []*tetragon.GetEventsResponse) {
if !assert.Equal(t, 2, len(events)) {
t.FailNow()
}
execEv, exitEv := GetEvents(t, events)
assert.NotNil(t, execEv)
assert.NotNil(t, execEv.Process.Pod) // has pod info
assert.Equal(t, execEv.Process.Pod.Namespace, "fake_pod_namespace") // correct pod
assert.NotEqual(t, execEv.Process.ExecId, "") // full process info
assert.NotNil(t, execEv.Parent)
assert.NotNil(t, exitEv)
assert.NotNil(t, exitEv.Process.Pod) // has pod info
assert.Equal(t, exitEv.Process.Pod.Namespace, "fake_pod_namespace") // correct pod
assert.NotEqual(t, exitEv.Process.ExecId, "") // full process info
assert.NotNil(t, exitEv.Parent)
}
// In this case, we get an exec and an exit event (in-order) but we
// miss Pod info. Both of these go through the eventcache to get the
// pod info. At the end both should have correct pod info and the exit
// event should also have full process info.
func GrpcExecPodInfoInOrder[EXEC notify.Message, EXIT notify.Message](t *testing.T) {
AllEvents = nil
option.Config.EnableK8s = true // enable Kubernetes
fakeWatcher := watcher.NewFakeK8sWatcher(nil)
dn := InitEnv[EXEC, EXIT](t, fakeWatcher)
parentPid := atomic.AddUint32(&BasePid, 1)
currentPid := atomic.AddUint32(&BasePid, 1)
rootMsg, parentMsg, execMsg, exitMsg := CreateEvents[EXEC, EXIT](currentPid, 21034975089403, parentPid, 75200000000, "fake_container_container_id")
// Create some corrent events to have parents
// in the cache. We also provide a dummy pod
// here in order not to cache these events. At
// the end we remove pod info to do the actual
// test.
fakeWatcher.AddPod(dummyPod)
(*rootMsg).HandleMessage()
(*parentMsg).HandleMessage()
fakeWatcher.ClearAllPods()
if e := (*execMsg).HandleMessage(); e != nil {
AllEvents = append(AllEvents, e)
}
if e := (*exitMsg).HandleMessage(); e != nil {
AllEvents = append(AllEvents, e)
}
fakeWatcher.AddPod(dummyPod) // setup some dummy pod to return
dn.WaitNotifier(2) // wait for cache to do it's work
CheckPodEvents(t, AllEvents)
}
// In this case, we get an exit and an exec event (out-of-order) and we
// also miss Pod info. Both of these go through the eventcache to get the
// pod info and process info. At the end both should have correct pod info
// and the exit event should also have full process info.
func GrpcExecPodInfoOutOfOrder[EXEC notify.Message, EXIT notify.Message](t *testing.T) {
AllEvents = nil
option.Config.EnableK8s = true // enable Kubernetes
fakeWatcher := watcher.NewFakeK8sWatcher(nil)
dn := InitEnv[EXEC, EXIT](t, fakeWatcher)
parentPid := atomic.AddUint32(&BasePid, 1)
currentPid := atomic.AddUint32(&BasePid, 1)
rootMsg, parentMsg, execMsg, exitMsg := CreateEvents[EXEC, EXIT](currentPid, 21034975089403, parentPid, 75200000000, "fake_container_container_id")
// Create some corrent events to have parents
// in the cache. We also provide a dummy pod
// here in order not to cache these events. At
// the end we remove pod info to do the actual
// test.
fakeWatcher.AddPod(dummyPod)
(*rootMsg).HandleMessage()
(*parentMsg).HandleMessage()
fakeWatcher.ClearAllPods()
if e := (*exitMsg).HandleMessage(); e != nil {
AllEvents = append(AllEvents, e)
}
if e := (*execMsg).HandleMessage(); e != nil {
AllEvents = append(AllEvents, e)
}
fakeWatcher.AddPod(dummyPod)
dn.WaitNotifier(2) // wait for cache to do it's work
CheckPodEvents(t, AllEvents)
}
// In this case, we get an exec and an exit event (in-order). During
// the exec event we miss pod info. We get pod info before getting
// the exit event. In this case exec event should go through the
// eventcache (missed pod info) and exit event should also go through
// the cache as the procCache has not been updated yet. At the end both
// should have correct pod info and the exit event should also have full
// process info.
func GrpcExecPodInfoInOrderAfter[EXEC notify.Message, EXIT notify.Message](t *testing.T) {
AllEvents = nil
option.Config.EnableK8s = true // enable Kubernetes
fakeWatcher := watcher.NewFakeK8sWatcher(nil)
dn := InitEnv[EXEC, EXIT](t, fakeWatcher)
parentPid := atomic.AddUint32(&BasePid, 1)
currentPid := atomic.AddUint32(&BasePid, 1)
rootMsg, parentMsg, execMsg, exitMsg := CreateEvents[EXEC, EXIT](currentPid, 21034975089403, parentPid, 75200000000, "fake_container_container_id")
// Create some corrent events to have parents
// in the cache. We also provide a dummy pod
// here in order not to cache these events. At
// the end we remove pod info to do the actual
// test.
fakeWatcher.AddPod(dummyPod)
(*rootMsg).HandleMessage()
(*parentMsg).HandleMessage()
fakeWatcher.ClearAllPods()
if e := (*execMsg).HandleMessage(); e != nil {
AllEvents = append(AllEvents, e)
}
fakeWatcher.AddPod(dummyPod) // setup some dummy pod to return
if e := (*exitMsg).HandleMessage(); e != nil {
AllEvents = append(AllEvents, e)
}
dn.WaitNotifier(2) // wait for cache to do it's work
CheckPodEvents(t, AllEvents)
}
// In this case, we get an exit and an exec event (out-of-order). During
// the exit event we also miss pod info. We get pod info before getting
// the exec event. In this case exit event should go through the
// eventcache (missed pod and process info) and exec event should not go
// through the cache as we have everything. At the end both should
// have correct pod info and the exit event should also have full
// process info.
func GrpcExecPodInfoOutOfOrderAfter[EXEC notify.Message, EXIT notify.Message](t *testing.T) {
AllEvents = nil
option.Config.EnableK8s = true // enable Kubernetes
fakeWatcher := watcher.NewFakeK8sWatcher(nil)
dn := InitEnv[EXEC, EXIT](t, fakeWatcher)
parentPid := atomic.AddUint32(&BasePid, 1)
currentPid := atomic.AddUint32(&BasePid, 1)
rootMsg, parentMsg, execMsg, exitMsg := CreateEvents[EXEC, EXIT](currentPid, 21034975089403, parentPid, 75200000000, "fake_container_container_id")
// Create some corrent events to have parents
// in the cache. We also provide a dummy pod
// here in order not to cache these events. At
// the end we remove pod info to do the actual
// test.
fakeWatcher.AddPod(dummyPod)
(*rootMsg).HandleMessage()
(*parentMsg).HandleMessage()
fakeWatcher.ClearAllPods()
if e := (*exitMsg).HandleMessage(); e != nil {
AllEvents = append(AllEvents, e)
}
fakeWatcher.AddPod(dummyPod) // setup some dummy pod to return
if e := (*execMsg).HandleMessage(); e != nil {
AllEvents = append(AllEvents, e)
}
dn.WaitNotifier(2) // wait for cache to do it's work
CheckPodEvents(t, AllEvents)
}
// In this case, we get an exit and an exec event (out-of-order). During
// the exit event we also miss pod info. We get pod info after at least one
// cache GC round. In this case exit event should go through the
// eventcache (missed pod and process info). Once we get the exec info
// we still have to keep the exit event in the eventcache.
func GrpcExecPodInfoDelayedOutOfOrder[EXEC notify.Message, EXIT notify.Message](t *testing.T) {
AllEvents = nil
option.Config.EnableK8s = true // enable Kubernetes
fakeWatcher := watcher.NewFakeK8sWatcher(nil)
dn := InitEnv[EXEC, EXIT](t, fakeWatcher)
parentPid := atomic.AddUint32(&BasePid, 1)
currentPid := atomic.AddUint32(&BasePid, 1)
rootMsg, parentMsg, execMsg, exitMsg := CreateEvents[EXEC, EXIT](currentPid, 21034975089403, parentPid, 75200000000, "fake_container_container_id")
// Create some corrent events to have parents
// in the cache. We also provide a dummy pod
// here in order not to cache these events. At
// the end we remove pod info to do the actual
// test.
fakeWatcher.AddPod(dummyPod)
(*rootMsg).HandleMessage()
(*parentMsg).HandleMessage()
fakeWatcher.ClearAllPods()
if e := (*exitMsg).HandleMessage(); e != nil {