feat(uplink): add PodDisruptionBudget and unittests

charts/uplink/Chart.yaml

@@ -2,9 +2,11 @@ apiVersion: v1
 appVersion: "1.0"
 description: A Helm chart for uplink.jenkins.io
 name: uplink
-version: 0.2.0
+version: 0.3.0
 maintainers:
   - name: olblak
   - name: dduportal
   - name: hlemeur
   - name: smerle
+poddisruptionbudget:
+  minAvailable: 1

charts/uplink/templates/_helpers.tpl

@@ -31,13 +31,21 @@ 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 "uplink.selectorLabels" -}}
+app.kubernetes.io/name: {{ include "uplink.name" . }}
+app.kubernetes.io/instance: {{ .Release.Name }}
+{{- end }}
+
+
 {{/*
 Common labels
 */}}
 {{- define "uplink.labels" -}}
-app.kubernetes.io/name: {{ include "uplink.name" . }}
+{{ include "uplink.selectorLabels" . }}
 helm.sh/chart: {{ include "uplink.chart" . }}
-app.kubernetes.io/instance: {{ .Release.Name }}
 {{- if .Chart.AppVersion }}
 app.kubernetes.io/version: {{ .Chart.AppVersion | quote }}
 {{- end }}

charts/uplink/templates/deployment.yaml

@@ -64,8 +64,10 @@ spec:
             httpGet:
               path: /
               port: 3030
+          {{- with .Values.resources }}
           resources:
-            {{- toYaml .Values.resources | nindent 12 }}
+            {{- toYaml . | nindent 12 }}
+          {{- end }}
       {{- with .Values.nodeSelector }}
       nodeSelector:
         {{- toYaml . | nindent 8 }}

charts/uplink/templates/pdb.yaml

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

charts/uplink/tests/custom_values_test.yaml

@@ -1,6 +1,7 @@
 suite: test secret.yaml
 templates:
   - secret.yaml
+  - pdb.yaml
 set:
   postgresql:
     url: "example-url"
@@ -10,6 +11,7 @@ set:
   sentry.dsn: "example-dsn"
 tests:
   - it: should ensure the secret is created with custom credentials
+    template: secret.yaml
     asserts:
       - isKind:
           of: Secret
@@ -28,3 +30,37 @@ tests:
       - equal:
           path: data['sentry.dsn']
           value: "ZXhhbXBsZS1kc24="  # Base64 encoded value of "example-dsn"
+  - 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: "uplink"
+  - 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: "uplink"
+      - equal:
+          path: metadata.labels["app.kubernetes.io/name"]
+          value: uplink

charts/uplink/tests/defaults_test.yaml

@@ -1,8 +1,11 @@
 suite: test default behavior of secret.yaml with default values
 templates:
   - secret.yaml
+  - pdb.yaml
+  - deployment.yaml
 tests:
   - it: should render with default values without error
+    template: secret.yaml
     asserts:
       - isKind:
           of: Secret
@@ -17,3 +20,29 @@ tests:
           path: data.client.secret
       - notExists:
           path: data.sentry.dsn
+  - it: should not generate any pdb with default values
+    template: pdb.yaml
+    asserts:
+      - hasDocuments:
+          count: 0
+  - it: Should generate a deployment with the default values
+    template: deployment.yaml
+    asserts:
+      - hasDocuments:
+          count: 1
+      - isKind:
+          of: Deployment
+      - notExists:
+          path: spec.affinity
+      - equal:
+          path: metadata.labels["app.kubernetes.io/name"]
+          value: uplink
+      - equal:
+          path: metadata.labels["app.kubernetes.io/managed-by"]
+          value: Helm
+      - equal:
+          path: spec.template.spec.containers[0].name
+          value: uplink
+      - equal:
+          path: spec.template.spec.containers[0].resources.limits.cpu
+          value: 200m

charts/uplink/values.yaml

@@ -60,3 +60,5 @@ client:
   secret: ""
 sentry:
   dsn: ""
+poddisruptionbudget:
+  minAvailable: 1