fix(master): pass lifecycle configuration to master container (#1062)

api/v1alpha2/jenkins_types.go

@@ -311,6 +311,7 @@ type JenkinsMaster struct {
 	//     periodSeconds: 10
 	//     successThreshold: 1
 	//     timeoutSeconds: 5
+	//   lifecycle: {}
 	//   name: jenkins-master
 	//   readinessProbe:
 	//     failureThreshold: 3

chart/jenkins-operator/templates/jenkins.yaml

@@ -134,6 +134,9 @@ spec:
         {{- with .Values.jenkins.env }}
         env: {{- toYaml . | nindent 8 }}
         {{- end }}
+        {{- with .Values.jenkins.lifecycle}}
+        lifecycle: {{ toYaml . | nindent 10 }}
+        {{- end }}
         {{- with .Values.jenkins.volumeMounts }}
         volumeMounts: {{- toYaml . | nindent 8 }}
         {{- end }}

chart/jenkins-operator/values.yaml

@@ -44,6 +44,9 @@ jenkins:
   # imagePullPolicy defines policy for pulling images
   imagePullPolicy: Always
 
+  # lifecycle is used if you want to specify lifecycle hooks for the master container
+  lifecycle: {}
+
   # priorityClassName indicates the importance of a Pod relative to other Pods
   # See: https://kubernetes.io/docs/concepts/configuration/pod-priority-preemption/
   priorityClassName: ""

controllers/jenkins_controller.go

@@ -378,6 +378,11 @@ func (r *JenkinsReconciler) setDefaults(jenkins *v1alpha2.Jenkins) (requeue bool
 		changed = true
 		jenkinsContainer.LivenessProbe = resources.NewProbe(containerProbeURI, containerProbePortName, corev1.URISchemeHTTP, 80, 5, 12)
 	}
+	if jenkinsContainer.Lifecycle == nil {
+		logger.Info("Setting default Jenkins lifecycle")
+		changed = true
+		jenkinsContainer.Lifecycle = &corev1.Lifecycle{}
+	}
 	if len(jenkinsContainer.Command) == 0 {
 		logger.Info("Setting default Jenkins container command")
 		changed = true

pkg/configuration/base/resources/pod.go

@@ -243,6 +243,7 @@ func NewJenkinsMasterContainer(jenkins *v1alpha2.Jenkins) corev1.Container {
 		Image:           jenkinsContainer.Image,
 		ImagePullPolicy: jenkinsContainer.ImagePullPolicy,
 		Command:         jenkinsContainer.Command,
+		Lifecycle:       jenkinsContainer.Lifecycle,
 		LivenessProbe:   jenkinsContainer.LivenessProbe,
 		ReadinessProbe:  jenkinsContainer.ReadinessProbe,
 		Ports: []corev1.ContainerPort{

test/bats/2-deploy-with-more-options.bats

@@ -105,6 +105,7 @@ setup() {
     --set jenkins.nodeSelector.batstest=yep \
     --set jenkins.image="jenkins/jenkins:2.462.3-lts" \
     --set jenkins.imagePullPolicy="IfNotPresent" \
+    --set jenkins.lifecycle.preStop.command='["echo bats test"]' \
     --set jenkins.backup.makeBackupBeforePodDeletion=false \
     --set jenkins.backup.image=quay.io/jenkins-kubernetes-operator/backup-pvc:e2e-test \
     chart/jenkins-operator --wait
@@ -137,6 +138,15 @@ setup() {
   assert_success
 }
 
+#bats test_tags=phase:helm,scenario:more-options
+@test "2.5  Helm: check lifecycle" {
+  [[ ! -f "chart/jenkins-operator/deploy.tmp" ]] && skip "Jenkins helm chart have not been deployed correctly"
+
+  run ${KUBECTL} get pod jenkins-jenkins -o jsonpath={.spec.containers[0].lifecycle.preStop.exec.command[0]}
+  assert_success
+  assert_output "echo 'bats test'"
+}
+
 #bats test_tags=phase:helm,scenario:more-options
 @test "2.12 Helm: check node selector again" {
   [[ ! -f "chart/jenkins-operator/deploy.tmp" ]] && skip "Jenkins helm chart have not been deployed correctly"