/
actiontypes.go
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/
actiontypes.go
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package actions
import (
"errors"
"fmt"
"reflect"
"strings"
"time"
libs "github.com/k8guard/k8guardlibs"
"github.com/k8guard/k8guardlibs/violations"
)
type Action interface {
DoAction(entity ActionableEntity, vEntity libs.ViolatableEntity, lastActions map[string][]time.Time) []string
}
type SingleReplicaAction struct {
violations.Violation
}
type CapabilitiesAction struct {
violations.Violation
}
type PrivilegedAction struct {
violations.Violation
}
type HostVolumesAction struct {
violations.Violation
}
type ImageSizeAction struct {
violations.Violation
}
type ImageRepoAction struct {
violations.Violation
}
type IngressAction struct {
violations.Violation
}
type RequiredPodAction struct {
violations.Violation
}
type RequiredPodAnnotationAction struct {
violations.Violation
}
type RequiredPodLabelAction struct {
violations.Violation
}
type RequiredNamespaceAction struct {
violations.Violation
}
type RequiredNamespaceAnnotationAction struct {
violations.Violation
}
type RequiredNamespaceLabelAction struct {
violations.Violation
}
type RequiredDeploymentAction struct {
violations.Violation
}
type RequiredDeploymentAnnotationAction struct {
violations.Violation
}
type RequiredDeploymentLabelAction struct {
violations.Violation
}
type RequiredDaemonSetAction struct {
violations.Violation
}
type RequiredDaemonSetAnnotationAction struct {
violations.Violation
}
type RequiredDaemonSetLabelAction struct {
violations.Violation
}
type RequiredResourceQuotaAction struct {
violations.Violation
}
type NoOwnerAction struct {
violations.Violation
}
// action for containers with extra capablities.
func (a CapabilitiesAction) DoAction(entity ActionableEntity, vEntity libs.ViolatableEntity, lastActions map[string][]time.Time) []string {
return processAction(entity, vEntity, lastActions, "Extra Capabilities", a.Violation.Source, a.Type)
}
// Action for privileged mode containers
func (a PrivilegedAction) DoAction(entity ActionableEntity, vEntity libs.ViolatableEntity, lastActions map[string][]time.Time) []string {
return processAction(entity, vEntity, lastActions, "Privileged Mode", a.Violation.Source, a.Type)
}
// Action for any pod with a hostVolume
func (a HostVolumesAction) DoAction(entity ActionableEntity, vEntity libs.ViolatableEntity, lastActions map[string][]time.Time) []string {
return processAction(entity, vEntity, lastActions, "Host Volumes Mounted", a.Violation.Source, a.Type)
}
// action for pods with single replica , currently action is supressed.
func (a SingleReplicaAction) DoAction(entity ActionableEntity, vEntity libs.ViolatableEntity, lastActions map[string][]time.Time) []string {
return processSupressedAction(entity, vEntity, lastActions, "Single Replica", a.Source, a.Type)
}
// action for a container with a big image size
func (a ImageSizeAction) DoAction(entity ActionableEntity, vEntity libs.ViolatableEntity, lastActions map[string][]time.Time) []string {
return processSupressedAction(entity, vEntity, lastActions, "Invalid Image Size", a.Source, a.Type)
}
// action for invalid repo for an image
func (a ImageRepoAction) DoAction(entity ActionableEntity, vEntity libs.ViolatableEntity, lastActions map[string][]time.Time) []string {
return processAction(entity, vEntity, lastActions, "Invalid Image Repo", a.Violation.Source, a.Type)
}
// action for ingress, a special kind that we don't warn.
func (a IngressAction) DoAction(entity ActionableEntity, vEntity libs.ViolatableEntity, lastActions map[string][]time.Time) []string {
// While in safe mode last warning = false
actMessage := createActionMessage(vEntity.Namespace, reflect.TypeOf(entity).Name(), vEntity.Name, "Invalid Ingress", a.Violation.Source, len(lastActions["notify"]), libs.Cfg.ActionSafeMode == false)
NotifyOfViolation(actMessage)
if libs.Cfg.ActionSafeMode == false {
entity.DoAction()
} else {
libs.Log.Debug("Skipping action for ", vEntity.Name, " ", a.Type, " due to safe mode.")
return []string{"notify"}
}
return []string{"notify", "entity_action"}
}
// action for missing mandatory namespace
func (a RequiredNamespaceAction) DoAction(entity ActionableEntity, vEntity libs.ViolatableEntity, lastActions map[string][]time.Time) []string {
return processAction(entity, vEntity, lastActions, "Missing required namespace", a.Violation.Source, a.Type)
}
// action for missing namespace annotation
func (a RequiredNamespaceAnnotationAction) DoAction(entity ActionableEntity, vEntity libs.ViolatableEntity, lastActions map[string][]time.Time) []string {
return processAction(entity, vEntity, lastActions, "Missing namespace annotation", a.Violation.Source, a.Type)
}
// action for missing namespace label
func (a RequiredNamespaceLabelAction) DoAction(entity ActionableEntity, vEntity libs.ViolatableEntity, lastActions map[string][]time.Time) []string {
return processAction(entity, vEntity, lastActions, "Missing namespace label", a.Violation.Source, a.Type)
}
// action for missing mandatory deployment
func (a RequiredDeploymentAction) DoAction(entity ActionableEntity, vEntity libs.ViolatableEntity, lastActions map[string][]time.Time) []string {
return processAction(entity, vEntity, lastActions, "Missing required deployment", a.Violation.Source, a.Type)
}
// action for missing namespace annotation
func (a RequiredDeploymentAnnotationAction) DoAction(entity ActionableEntity, vEntity libs.ViolatableEntity, lastActions map[string][]time.Time) []string {
return processAction(entity, vEntity, lastActions, "Missing deployment annotation", a.Violation.Source, a.Type)
}
// action for missing namespace label
func (a RequiredDeploymentLabelAction) DoAction(entity ActionableEntity, vEntity libs.ViolatableEntity, lastActions map[string][]time.Time) []string {
return processAction(entity, vEntity, lastActions, "Missing deployment label", a.Violation.Source, a.Type)
}
// action for missing mandatory pod
func (a RequiredPodAction) DoAction(entity ActionableEntity, vEntity libs.ViolatableEntity, lastActions map[string][]time.Time) []string {
return processAction(entity, vEntity, lastActions, "Missing required pod", a.Violation.Source, a.Type)
}
// action for missing pod annotation
func (a RequiredPodAnnotationAction) DoAction(entity ActionableEntity, vEntity libs.ViolatableEntity, lastActions map[string][]time.Time) []string {
return processAction(entity, vEntity, lastActions, "Missing pod annotation", a.Violation.Source, a.Type)
}
// action for missing pod label
func (a RequiredPodLabelAction) DoAction(entity ActionableEntity, vEntity libs.ViolatableEntity, lastActions map[string][]time.Time) []string {
return processAction(entity, vEntity, lastActions, "Missing pod label", a.Violation.Source, a.Type)
}
// action for missing mandatory daemonset
func (a RequiredDaemonSetAction) DoAction(entity ActionableEntity, vEntity libs.ViolatableEntity, lastActions map[string][]time.Time) []string {
return processAction(entity, vEntity, lastActions, "Missing required daemonset", a.Violation.Source, a.Type)
}
// action for missing daemonset annotation
func (a RequiredDaemonSetAnnotationAction) DoAction(entity ActionableEntity, vEntity libs.ViolatableEntity, lastActions map[string][]time.Time) []string {
return processAction(entity, vEntity, lastActions, "Missing daemonset annotation", a.Violation.Source, a.Type)
}
// action for missing daemonset label
func (a RequiredDaemonSetLabelAction) DoAction(entity ActionableEntity, vEntity libs.ViolatableEntity, lastActions map[string][]time.Time) []string {
return processAction(entity, vEntity, lastActions, "Missing daemonset label", a.Violation.Source, a.Type)
}
// action for missing mandatory resourcequota
func (a RequiredResourceQuotaAction) DoAction(entity ActionableEntity, vEntity libs.ViolatableEntity, lastActions map[string][]time.Time) []string {
return processAction(entity, vEntity, lastActions, "Missing required resourcequota", a.Violation.Source, a.Type)
}
// action for missing owner
func (a NoOwnerAction) DoAction(entity ActionableEntity, vEntity libs.ViolatableEntity, lastActions map[string][]time.Time) []string {
return processAction(entity, vEntity, lastActions, "No owner", a.Violation.Source, a.Type)
}
func ConvertActionableEntityToViolatableEntity(entity ActionableEntity) (libs.ViolatableEntity, error) {
var vEntity libs.ViolatableEntity
switch t := entity.(type) {
case ActionDeployment:
vEntity = t.ViolatableEntity
break
case ActionNamespace:
vEntity = t.ViolatableEntity
break
case ActionDaemonSet:
vEntity = t.ViolatableEntity
break
case ActionPod:
vEntity = t.ViolatableEntity
break
case ActionIngress:
vEntity = t.ViolatableEntity
break
case ActionJob:
vEntity = t.ViolatableEntity
break
case ActionCronJob:
vEntity = t.ViolatableEntity
break
default:
return libs.ViolatableEntity{}, errors.New(fmt.Sprintf("Unknown Actionable Entity Type %s", t))
}
return vEntity, nil
}
func processAction(entity ActionableEntity, vEntity libs.ViolatableEntity, lastActions map[string][]time.Time, violationMessage string, violationSource string, violationType violations.ViolationType) []string {
lastTimeWarned, doIt := getLastTimeWarnedAndifToDoAction(lastActions)
if doIt {
entity.DoAction()
return []string{"entity_action"}
}
if canSkipNotification(lastTimeWarned) {
libs.Log.Debug("Skipping notification for ", vEntity.Name, " ", violationType, " it was notified less than ", libs.Cfg.DurationBetweenNotifyingAgain, " ago.")
return []string{}
}
aMessage := createActionMessage(vEntity.Namespace, reflect.TypeOf(entity).Name(), vEntity.Name, violationMessage, violationSource, len(lastActions["notify"]), isLastWarning(lastActions))
NotifyOfViolation(aMessage)
return []string{"notify"}
}
func processSupressedAction(entity ActionableEntity, vEntity libs.ViolatableEntity, lastActions map[string][]time.Time, violationMessage string, violationSource string, violationType violations.ViolationType) []string {
lastTimeWarned, _ := getLastTimeWarnedAndifToDoAction(lastActions)
if canSkipNotification(lastTimeWarned) {
libs.Log.Debug("Skipping notification for ", vEntity.Name, " ", violationType, " it was notified less than ", libs.Cfg.DurationBetweenNotifyingAgain, " ago.")
return []string{}
}
aMessage := createActionMessage(vEntity.Namespace, reflect.TypeOf(entity).Name(), vEntity.Name, violationMessage, violationSource, len(lastActions["notify"]), isLastWarning(lastActions))
NotifyOfViolation(aMessage)
return []string{"notify"}
}
func createActionMessage(namespace string, entityType string, sourceName string, violationType string, violationSource string, warningCount int, lastWarning bool) actionMessage {
aMessage := actionMessage{
Namespace: namespace,
Cluster: libs.Cfg.ClusterName,
EntityType: strings.Replace(entityType, "Action", "", 1) + " Name",
EntitySource: sourceName,
ViolationType: violationType,
ViolationSource: violationSource,
WarningCount: warningCount + 1,
// There will be no last warning in safe mode.
LastWarning: lastWarning,
}
return aMessage
}
func canSkipNotification(lastTimeWarned time.Time) bool {
return lastTimeWarned.IsZero() == false && time.Now().Sub(lastTimeWarned) < libs.Cfg.DurationBetweenNotifyingAgain
}
func getLastTimeWarnedAndifToDoAction(lastActions map[string][]time.Time) (time.Time, bool) {
var lastTimeWarned time.Time
var doAction = false
if t, ok := lastActions["notify"]; ok {
lastTimeWarned = t[len(t)-1]
if libs.Cfg.ActionSafeMode == false {
if len(t) >= libs.Cfg.WarningCountBeforeAction {
doAction = true
}
}
}
return lastTimeWarned, doAction
}
func isLastWarning(lastActions map[string][]time.Time) bool {
return libs.Cfg.ActionSafeMode == false && len(lastActions["notify"]) >= libs.Cfg.WarningCountBeforeAction-1
}