feat(reports): add PodDisruptionBudget and unittests

charts/reports/Chart.yaml

@@ -4,4 +4,4 @@ description: A Helm chart for reports.jenkins.io
 maintainers:
   - name: timja
 name: reports
-version: 0.3.1
+version: 0.4.0

charts/reports/templates/_helpers.tpl

@@ -31,13 +31,20 @@ Create chart name and version as used by the chart label.
 {{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" -}}
 {{- end -}}
 
+{{/*
+Selector labels
+*/}}
+{{- define "reports.selectorLabels" -}}
+app.kubernetes.io/name: {{ include "reports.name" . }}
+app.kubernetes.io/instance: {{ .Release.Name }}
+{{- end }}
+
 {{/*
 Common labels
 */}}
 {{- define "reports.labels" -}}
-app.kubernetes.io/name: {{ include "reports.name" . }}
+{{ include "reports.selectorLabels" . }}
 helm.sh/chart: {{ include "reports.chart" . }}
-app.kubernetes.io/instance: {{ .Release.Name }}
 {{- if .Chart.AppVersion }}
 app.kubernetes.io/version: {{ .Chart.AppVersion | quote }}
 {{- end }}

charts/reports/templates/deployment.yaml

@@ -51,8 +51,10 @@ spec:
               mountPath: /usr/share/nginx/html
             - name: config
               mountPath: /etc/nginx/conf.d
+          {{- with .Values.resources }}
           resources:
-            {{- toYaml .Values.resources | nindent 12 }}
+            {{- toYaml . | nindent 12 }}
+          {{- end}}
       {{- with .Values.nodeSelector }}
       nodeSelector:
         {{- toYaml . | nindent 8 }}
@@ -66,9 +68,11 @@ spec:
         {{- toYaml . | nindent 8 }}
     {{- end }}
       volumes:
-        {{- with .Values.htmlVolume  }}
         - name: html
-          {{- toYaml . | nindent 10 }}
+        {{- if .Values.htmlVolume }}
+{{ toYaml .Values.htmlVolume | indent 10 }}
+        {{- else }}
+          emptyDir: {}
         {{- end }}
         - name: config
           configMap:

charts/reports/templates/pdb.yaml

@@ -0,0 +1,18 @@
+{{- if (gt (int .Values.replicaCount) 1) }}
+apiVersion: policy/v1
+kind: PodDisruptionBudget
+metadata:
+  name: {{ include "reports.fullname" . }}
+  labels:
+    {{- include "reports.labels" . | nindent 4 }}
+spec:
+  {{- with .Values.poddisruptionbudget.minAvailable }}
+  minAvailable: {{ . }}
+  {{- end }}
+  {{- with .Values.poddisruptionbudget.maxUnavailable }}
+  maxUnavailable: {{ . }}
+  {{- end }}
+  selector:
+    matchLabels:
+      {{- include "reports.selectorLabels" . | nindent 6 }}
+{{- end }}

charts/reports/tests/custom_values_test.yaml

@@ -3,6 +3,7 @@ templates:
   - deployment.yaml
   - ingress.yaml
   - nginx-configmap.yaml # Direct dependency of deployment.yaml
+  - pdb.yaml
 tests:
   - it: should create an ingress when ingress.enabled is true
     set:
@@ -17,6 +18,8 @@ tests:
     set:
       htmlVolume:
         hostPath: /host
+      resources:
+        cpu: 100ms
     asserts:
       - hasDocuments:
           count: 1
@@ -28,3 +31,37 @@ tests:
       - equal:
           path: spec.template.spec.volumes[0].hostPath
           value: /host
+      - equal:
+          path: spec.template.spec.containers[0].resources.cpu
+          value: 100ms
+  - it: should create a PDB with defaults when multiple replicas are set
+    template: pdb.yaml
+    set:
+      replicaCount: 2
+    asserts:
+      - isKind:
+          of: PodDisruptionBudget
+      - equal:
+          path: spec.minAvailable
+          value: 1
+      - equal:
+          path: spec.selector.matchLabels['app.kubernetes.io/name']
+          value: "reports"
+  - it: should ensure the pdb has correct spec
+    template: pdb.yaml
+    set:
+      replicaCount: 2
+      poddisruptionbudget.minAvailable: 2
+      poddisruptionbudget.maxUnavailable: 3
+    asserts:
+      - isKind:
+          of: PodDisruptionBudget
+      - equal:
+          path: spec.minAvailable
+          value: 2
+      - equal:
+          path: spec.maxUnavailable
+          value: 3
+      - equal:
+          path: spec.selector.matchLabels['app.kubernetes.io/name']
+          value: "reports"

charts/reports/tests/defaults_values_test.yaml

@@ -3,6 +3,7 @@ templates:
   - deployment.yaml
   - ingress.yaml
   - nginx-configmap.yaml # Direct dependency of deployment.yaml
+  - pdb.yaml
 tests:
   - it: should  not create an ingress by default
     template: ingress.yaml
@@ -19,3 +20,22 @@ tests:
       - equal:
           path: spec.template.spec.containers[0].imagePullPolicy
           value: IfNotPresent
+      - equal:
+          path: metadata.labels["app.kubernetes.io/name"]
+          value: reports
+      - equal:
+          path: metadata.labels["app.kubernetes.io/managed-by"]
+          value: Helm
+      - equal:
+          path: spec.template.spec.volumes[0].name
+          value: html
+      - equal:
+          path: spec.template.spec.volumes[0].emptyDir
+          value: {}
+      - notExists:
+          path: spec.template.spec.containers[0].resources
+  - it: should not generate any pdb with default values
+    template: pdb.yaml
+    asserts:
+      - hasDocuments:
+          count: 0

charts/reports/values.yaml

@@ -53,3 +53,5 @@ htmlVolume:
 azureStorageAccountName:
 # key for accessing the azure storage account
 azureStorageAccountKey:
+poddisruptionbudget:
+  minAvailable: 1