feat(infra): add ledger helm chart with lint and kubeconform ci

.github/workflows/helm-test.yml

@@ -19,40 +19,35 @@ permissions:
 
 jobs:
   chart-test:
-    name: Lint & Install (kind)
+    name: Lint & Validate
     runs-on: ubuntu-latest
 
     permissions:
       contents: read
 
+    env:
+      KUBECONFORM_VERSION: v0.6.7
+      KUBERNETES_VERSION: "1.31.0"
+
     steps:
       - name: Checkout
         uses: actions/checkout@v4
-        with:
-          fetch-depth: 0
 
       - name: Set up Helm
         uses: azure/setup-helm@v4
         with:
           version: "v3.16.4"
 
-      - name: Set up chart-testing (ct)
-        uses: helm/chart-testing-action@v2
-
-      - name: Run chart linting
-        run: ct lint --chart-dirs deploy/helm --all
+      - name: Helm lint
+        run: helm lint deploy/helm/ledger
 
-      - name: Create kind cluster
-        uses: helm/kind-action@v1
-        with:
-          cluster_name: fincore-test
-
-      - name: Run chart-testing (install)
-        run: ct install --chart-dirs deploy/helm --all --debug
+      - name: Install kubeconform
+        run: |
+          curl -sSL "https://github.com/yannh/kubeconform/releases/download/${KUBECONFORM_VERSION}/kubeconform-linux-amd64.tar.gz" \
+            | tar -xz kubeconform
+          sudo mv kubeconform /usr/local/bin/
 
-      - name: Helm template render check
+      - name: Helm template and validate manifests
         run: |
-          helm template fincore-test deploy/helm/fincore-engine \
-            --set global.image.tag=ci \
-            --debug \
-            > /dev/null
+          helm template ledger deploy/helm/ledger --set image.tag=test \
+            | kubeconform -strict -summary -kubernetes-version "$KUBERNETES_VERSION"

deploy/helm/ledger/.helmignore

@@ -0,0 +1,6 @@
+.DS_Store
+.git/
+.gitignore
+*.tmp
+*.bak
+*.swp

deploy/helm/ledger/Chart.yaml

@@ -0,0 +1,11 @@
+apiVersion: v2
+name: ledger
+description: FinCore ledger service, a double-entry accounting core
+type: application
+version: 0.1.0
+appVersion: "0.1.0"
+home: https://github.com/tiana-code/fincore-engine
+sources:
+  - https://github.com/tiana-code/fincore-engine
+maintainers:
+  - name: FinCore Engine Authors

deploy/helm/ledger/templates/NOTES.txt

@@ -0,0 +1,14 @@
+The ledger service has been deployed as release {{ .Release.Name }}.
+
+Service (ClusterIP) reachable in-cluster at:
+  {{ include "ledger.fullname" . }}.{{ .Release.Namespace }}.svc.cluster.local:{{ .Values.service.port }}
+
+Probe a pod locally with port-forward:
+  kubectl --namespace {{ .Release.Namespace }} port-forward svc/{{ include "ledger.fullname" . }} {{ .Values.service.port }}:{{ .Values.service.port }}
+  curl http://localhost:{{ .Values.service.port }}/actuator/health/readiness
+
+{{- if not .Values.existingSecret }}
+
+WARNING: existingSecret is empty. Set existingSecret to a Secret holding keys
+"{{ .Values.secretKeys.datasourcePassword }}" and "{{ .Values.secretKeys.keycloakClientSecret }}" before running against a real database.
+{{- end }}

deploy/helm/ledger/templates/_helpers.tpl

@@ -0,0 +1,35 @@
+{{- define "ledger.name" -}}
+{{- default .Chart.Name .Values.nameOverride | trunc 63 | trimSuffix "-" -}}
+{{- end -}}
+
+{{- define "ledger.fullname" -}}
+{{- if .Values.fullnameOverride -}}
+{{- .Values.fullnameOverride | trunc 63 | trimSuffix "-" -}}
+{{- else -}}
+{{- printf "%s-%s" .Release.Name (include "ledger.name" .) | trunc 63 | trimSuffix "-" -}}
+{{- end -}}
+{{- end -}}
+
+{{- define "ledger.chart" -}}
+{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" -}}
+{{- end -}}
+
+{{- define "ledger.selectorLabels" -}}
+app.kubernetes.io/name: {{ include "ledger.name" . }}
+app.kubernetes.io/instance: {{ .Release.Name }}
+{{- end -}}
+
+{{- define "ledger.labels" -}}
+helm.sh/chart: {{ include "ledger.chart" . }}
+{{ include "ledger.selectorLabels" . }}
+app.kubernetes.io/version: {{ .Chart.AppVersion | quote }}
+app.kubernetes.io/managed-by: {{ .Release.Service }}
+{{- end -}}
+
+{{- define "ledger.serviceAccountName" -}}
+{{- if .Values.serviceAccount.create -}}
+{{- default (include "ledger.fullname" .) .Values.serviceAccount.name -}}
+{{- else -}}
+{{- default "default" .Values.serviceAccount.name -}}
+{{- end -}}
+{{- end -}}

deploy/helm/ledger/templates/configmap.yaml

@@ -0,0 +1,13 @@
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: {{ include "ledger.fullname" . }}
+  labels:
+    {{- include "ledger.labels" . | nindent 4 }}
+data:
+  SPRING_PROFILES_ACTIVE: {{ .Values.config.springProfilesActive | quote }}
+  KEYCLOAK_ISSUER_URI: {{ .Values.config.keycloakIssuerUri | quote }}
+  OTLP_TRACING_ENDPOINT: {{ .Values.config.otlpTracingEndpoint | quote }}
+  FINCORE_LEDGER_CLEANUP_ENABLED: {{ .Values.config.cleanupEnabled | quote }}
+  SPRING_DATASOURCE_URL: {{ .Values.config.datasourceUrl | quote }}
+  SPRING_DATASOURCE_USERNAME: {{ .Values.config.datasourceUsername | quote }}

deploy/helm/ledger/templates/deployment.yaml

@@ -0,0 +1,75 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: {{ include "ledger.fullname" . }}
+  labels:
+    {{- include "ledger.labels" . | nindent 4 }}
+spec:
+  {{- if not .Values.autoscaling.enabled }}
+  replicas: {{ .Values.replicaCount }}
+  {{- end }}
+  selector:
+    matchLabels:
+      {{- include "ledger.selectorLabels" . | nindent 6 }}
+  template:
+    metadata:
+      labels:
+        {{- include "ledger.labels" . | nindent 8 }}
+    spec:
+      serviceAccountName: {{ include "ledger.serviceAccountName" . }}
+      {{- with .Values.imagePullSecrets }}
+      imagePullSecrets:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+      securityContext:
+        {{- toYaml .Values.podSecurityContext | nindent 8 }}
+      containers:
+        - name: ledger
+          image: "{{ .Values.image.repository }}:{{ .Values.image.tag | default .Chart.AppVersion }}"
+          imagePullPolicy: {{ .Values.image.pullPolicy }}
+          securityContext:
+            {{- toYaml .Values.securityContext | nindent 12 }}
+          ports:
+            - name: http
+              containerPort: {{ .Values.service.port }}
+              protocol: TCP
+          envFrom:
+            - configMapRef:
+                name: {{ include "ledger.fullname" . }}
+          {{- if .Values.existingSecret }}
+          env:
+            - name: SPRING_DATASOURCE_PASSWORD
+              valueFrom:
+                secretKeyRef:
+                  name: {{ .Values.existingSecret }}
+                  key: {{ .Values.secretKeys.datasourcePassword }}
+            - name: KEYCLOAK_CLIENT_SECRET
+              valueFrom:
+                secretKeyRef:
+                  name: {{ .Values.existingSecret }}
+                  key: {{ .Values.secretKeys.keycloakClientSecret }}
+          {{- end }}
+          livenessProbe:
+            httpGet:
+              path: /actuator/health/liveness
+              port: http
+            initialDelaySeconds: {{ .Values.probes.liveness.initialDelaySeconds }}
+            periodSeconds: {{ .Values.probes.liveness.periodSeconds }}
+            timeoutSeconds: {{ .Values.probes.liveness.timeoutSeconds }}
+            failureThreshold: {{ .Values.probes.liveness.failureThreshold }}
+          readinessProbe:
+            httpGet:
+              path: /actuator/health/readiness
+              port: http
+            initialDelaySeconds: {{ .Values.probes.readiness.initialDelaySeconds }}
+            periodSeconds: {{ .Values.probes.readiness.periodSeconds }}
+            timeoutSeconds: {{ .Values.probes.readiness.timeoutSeconds }}
+            failureThreshold: {{ .Values.probes.readiness.failureThreshold }}
+          resources:
+            {{- toYaml .Values.resources | nindent 12 }}
+          volumeMounts:
+            - name: tmp
+              mountPath: /tmp
+      volumes:
+        - name: tmp
+          emptyDir: {}

deploy/helm/ledger/templates/hpa.yaml

@@ -0,0 +1,22 @@
+{{- if .Values.autoscaling.enabled }}
+apiVersion: autoscaling/v2
+kind: HorizontalPodAutoscaler
+metadata:
+  name: {{ include "ledger.fullname" . }}
+  labels:
+    {{- include "ledger.labels" . | nindent 4 }}
+spec:
+  scaleTargetRef:
+    apiVersion: apps/v1
+    kind: Deployment
+    name: {{ include "ledger.fullname" . }}
+  minReplicas: {{ .Values.autoscaling.minReplicas }}
+  maxReplicas: {{ .Values.autoscaling.maxReplicas }}
+  metrics:
+    - type: Resource
+      resource:
+        name: cpu
+        target:
+          type: Utilization
+          averageUtilization: {{ .Values.autoscaling.targetCPUUtilizationPercentage }}
+{{- end }}

deploy/helm/ledger/templates/service.yaml

@@ -0,0 +1,15 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ include "ledger.fullname" . }}
+  labels:
+    {{- include "ledger.labels" . | nindent 4 }}
+spec:
+  type: {{ .Values.service.type }}
+  ports:
+    - name: http
+      port: {{ .Values.service.port }}
+      targetPort: http
+      protocol: TCP
+  selector:
+    {{- include "ledger.selectorLabels" . | nindent 4 }}

deploy/helm/ledger/templates/serviceaccount.yaml

@@ -0,0 +1,8 @@
+{{- if .Values.serviceAccount.create }}
+apiVersion: v1
+kind: ServiceAccount
+metadata:
+  name: {{ include "ledger.serviceAccountName" . }}
+  labels:
+    {{- include "ledger.labels" . | nindent 4 }}
+{{- end }}

deploy/helm/ledger/values.yaml

@@ -0,0 +1,80 @@
+replicaCount: 1
+
+nameOverride: ""
+fullnameOverride: ""
+
+image:
+  repository: ghcr.io/tiana-code/fincore-ledger
+  # Defaults to the chart appVersion when empty.
+  tag: ""
+  pullPolicy: IfNotPresent
+
+imagePullSecrets: []
+
+serviceAccount:
+  create: true
+  name: ""
+
+service:
+  type: ClusterIP
+  port: 8080
+
+resources:
+  requests:
+    cpu: 250m
+    memory: 512Mi
+  limits:
+    cpu: 1000m
+    memory: 1Gi
+
+autoscaling:
+  enabled: true
+  minReplicas: 1
+  maxReplicas: 10
+  targetCPUUtilizationPercentage: 70
+
+# Non-secret environment surfaced through the ConfigMap. Probes assume the
+# actuator stays on the main 8080 port, so leave springProfilesActive empty
+# (the prod profile moves actuator to 9090 and would break the 8080 probes).
+config:
+  springProfilesActive: ""
+  keycloakIssuerUri: ""
+  otlpTracingEndpoint: ""
+  cleanupEnabled: "false"
+  datasourceUrl: ""
+  datasourceUsername: ledger
+
+# Name of a pre-existing Kubernetes Secret holding the credentials. The chart
+# never contains secret values; it only references them. Leave empty to render
+# without secret-backed env (for example during template validation).
+existingSecret: ""
+secretKeys:
+  datasourcePassword: datasource-password
+  keycloakClientSecret: keycloak-client-secret
+
+podSecurityContext:
+  runAsNonRoot: true
+  runAsUser: 65532
+  runAsGroup: 65532
+  fsGroup: 65532
+  seccompProfile:
+    type: RuntimeDefault
+
+securityContext:
+  allowPrivilegeEscalation: false
+  readOnlyRootFilesystem: true
+  capabilities:
+    drop:
+      - ALL
+
+probes:
+  liveness:
+    initialDelaySeconds: 30
+    periodSeconds: 10
+    timeoutSeconds: 3
+    failureThreshold: 3
+  readiness:
+    initialDelaySeconds: 10
+    periodSeconds: 5
+    timeoutSeconds: 3
+    failureThreshold: 6