hades-chart/hades/templates/deployment.yaml

apiVersion: apps/v1
kind: Deployment
metadata:
  name: {{ include "hades.fullname" . }}
  labels:
    {{- include "hades.labels" . | nindent 4 }}
  annotations:
    # ArgoCD sync wave - run after dbinit job (wave 0)
    argocd.argoproj.io/sync-wave: "1"
    # Stakater Reloader - auto restart on ConfigMap/Secret changes
    reloader.stakater.com/auto: "true"
spec:
  {{- if not .Values.autoscaling.enabled }}
  replicas: {{ .Values.replicaCount }}
  {{- end }}
  selector:
    matchLabels:
      {{- include "hades.selectorLabels" . | nindent 6 }}
  template:
    metadata:
      annotations:
        checksum/config: {{ include (print $.Template.BasePath "/configmap.yaml") . | sha256sum }}
        {{- with .Values.podAnnotations }}
        {{- toYaml . | nindent 8 }}
        {{- end }}
      labels:
        {{- include "hades.selectorLabels" . | nindent 8 }}
        {{- with .Values.commonLabels }}
        {{- toYaml . | nindent 8 }}
        {{- end }}
    spec:
      {{- with .Values.imagePullSecrets }}
      imagePullSecrets:
        {{- toYaml . | nindent 8 }}
      {{- end }}
      serviceAccountName: {{ include "hades.serviceAccountName" . }}
      securityContext:
        {{- toYaml .Values.podSecurityContext | nindent 8 }}
      initContainers:
      # Wait for MySQL to be ready
      - name: wait-for-mysql
        image: busybox:1.36
        command:
          - sh
          - -c
          - |
            echo "Waiting for MySQL to be ready..."
            until nc -z {{ include "hades.databaseHost" . }} {{ include "hades.databasePort" . }}; do
              echo "MySQL is unavailable - sleeping"
              sleep 2
            done
            echo "MySQL is up - waiting a bit more for it to fully initialize..."
            sleep 10
            echo "MySQL is ready!"
      # Wait for database migrations to complete
      - name: wait-for-db-migrations
        image: mysql:8.0
        env:
        - name: MYSQL_HOST
          value: {{ include "hades.databaseHost" . | quote }}
        - name: MYSQL_PORT
          value: {{ include "hades.databasePort" . | quote }}
        - name: MYSQL_DATABASE
          value: {{ include "hades.databaseName" . | quote }}
        - name: MYSQL_USER
          value: {{ include "hades.databaseUsername" . | quote }}
        - name: MYSQL_PWD
          valueFrom:
            secretKeyRef:
              name: {{ include "hades.databaseSecretName" . }}
              key: mysql-password
        command:
          - sh
          - -c
          - |
            echo "Checking if database migrations have been applied..."

            # Wait for MySQL to accept connections
            until mysql -h"${MYSQL_HOST}" -P"${MYSQL_PORT}" -u"${MYSQL_USER}" -e "SELECT 1" "${MYSQL_DATABASE}" &> /dev/null; do
              echo "Waiting for MySQL to accept connections..."
              sleep 2
            done

            # Check if tables exist (basic migration check)
            echo "Verifying database schema..."
            TABLE_COUNT=$(mysql -h"${MYSQL_HOST}" -P"${MYSQL_PORT}" -u"${MYSQL_USER}" "${MYSQL_DATABASE}" -sN -e "SELECT COUNT(*) FROM information_schema.tables WHERE table_schema='${MYSQL_DATABASE}';")

            if [ "$TABLE_COUNT" -gt 0 ]; then
              echo "✓ Database migrations completed - found $TABLE_COUNT tables"
            else
              echo "⚠ Warning: No tables found in database. Migrations may not have completed yet."
              echo "Waiting 10 seconds for migrations to apply..."
              sleep 10
            fi

            echo "Database is ready for application startup!"
      containers:
      - name: {{ .Chart.Name }}
        securityContext:
          {{- toYaml .Values.securityContext | nindent 12 }}
        image: "{{ .Values.image.repository }}:{{ .Values.image.tag | default .Chart.AppVersion }}"
        imagePullPolicy: {{ .Values.image.pullPolicy }}
        ports:
        - name: http
          containerPort: {{ .Values.service.targetPort }}
          protocol: TCP
        {{- if .Values.livenessProbe }}
        livenessProbe:
          {{- toYaml .Values.livenessProbe | nindent 12 }}
        {{- end }}
        {{- if .Values.readinessProbe }}
        readinessProbe:
          {{- toYaml .Values.readinessProbe | nindent 12 }}
        {{- end }}
        resources:
          {{- toYaml .Values.resources | nindent 12 }}
        env:
        {{- range .Values.env }}
        - name: {{ .name }}
          value: {{ .value | quote }}
        {{- end }}
        # Database connection environment variables
        - name: DB_HOST
          value: {{ include "hades.databaseHost" . | quote }}
        - name: DB_PORT
          value: {{ include "hades.databasePort" . | quote }}
        - name: DB_NAME
          value: {{ include "hades.databaseName" . | quote }}
        - name: DB_USERNAME
          value: {{ include "hades.databaseUsername" . | quote }}
        - name: DB_PASSWORD
          valueFrom:
            secretKeyRef:
              name: {{ include "hades.databaseSecretName" . }}
              key: mysql-password
        - name: JDBC_URL
          value: {{ include "hades.jdbcUrl" . | quote }}
        # Hibernate configuration
        - name: HIBERNATE_DIALECT
          value: "org.hibernate.dialect.MySQL5Dialect"
        - name: HIBERNATE_SHOW_SQL
          value: "false"
        - name: HIBERNATE_HBM2DDL_AUTO
          value: "validate"
        {{- if or .Values.config.enabled .Values.allhosts.enabled }}
        volumeMounts:
        {{- if .Values.config.enabled }}
        - name: config
          mountPath: /etc/onlinesales/config/hades
          readOnly: true
        {{- end }}
        {{- if .Values.allhosts.enabled }}
        - name: allhosts
          mountPath: /etc/onlinesales/config/allhosts/allhosts.tsv
          subPath: allhosts.tsv
          readOnly: true
        {{- end }}
        {{- end }}
      {{- if or .Values.config.enabled .Values.allhosts.enabled }}
      volumes:
      {{- if .Values.config.enabled }}
      - name: config
        configMap:
          name: {{ include "hades.fullname" . }}-config
      {{- end }}
      {{- if .Values.allhosts.enabled }}
      - name: allhosts
        configMap:
          name: {{ include "hades.fullname" . }}-allhosts
      {{- end }}
      {{- end }}
      {{- with .Values.nodeSelector }}
      nodeSelector:
        {{- toYaml . | nindent 8 }}
      {{- end }}
      {{- with .Values.affinity }}
      affinity:
        {{- toYaml . | nindent 8 }}
      {{- end }}
      {{- with .Values.tolerations }}
      tolerations:
        {{- toYaml . | nindent 8 }}
      {{- end }}