# Copyright (c) 2021 Digital Asset (Switzerland) GmbH and/or its affiliates. All rights reserved.
# SPDX-License-Identifier: Apache-2.0

# This is an example configuration file that demonstrates how DAML on SQL can be
# naively deployed with PostgreSQL in a Kubernetes cluster.
#
# It is not intended to be used in a production environment.
#
# Operational requirements that are not covered here include, but are not
# limited to:
#
#   * scaling,
#   * server security,
#   * participant authentication,
#   * participant authorization,
#   * database backups,
#   * database recovery,
#   * and lots more.

---

apiVersion: v1
kind: Service
metadata:
  name: daml-on-sql
spec:
  type: LoadBalancer
  selector:
    app: ledger
  ports:
    - name: ledger-api
      port: 6865

---

kind: Deployment
apiVersion: apps/v1
metadata:
  name: ledger
  labels:
    app: ledger
spec:
  replicas: 1
  selector:
    matchLabels:
      app: ledger
  template:
    metadata:
      labels:
        app: ledger
    spec:
      containers:
        - name: daml-on-sql
          image: bazel/ledger/daml-on-sql:daml-on-sql-image
          args:
            - --ledgerid=kubernetes-demo
            - --sql-backend-jdbcurl=jdbc:postgresql://db:5432/daml?user=daml&password=daml
            - --port=6865
          ports:
            - name: ledger-api
              containerPort: 6865
          startupProbe:
            tcpSocket:
              port: ledger-api
            failureThreshold: 10
            periodSeconds: 10
          livenessProbe:
            tcpSocket:
              port: ledger-api
            failureThreshold: 3
            periodSeconds: 10
          readinessProbe:
            exec:
              command:
                - grpc-health-probe
                - -addr=:6865
            periodSeconds: 10

---

apiVersion: v1
kind: Service
metadata:
  name: db
  labels:
    app: db
spec:
  selector:
    app: db
  ports:
    - name: postgresql
      port: 5432

---

kind: StatefulSet
apiVersion: apps/v1
metadata:
  name: db
spec:
  selector:
    matchLabels:
      app: db
  serviceName: db
  replicas: 1
  template:
    metadata:
      labels:
        app: db
    spec:
      containers:
        - name: postgresql
          image: postgres
          env:
            - name: POSTGRES_USER
              value: daml
            - name: POSTGRES_PASSWORD
              value: daml
          ports:
            - name: postgresql
              containerPort: 5432
          volumeMounts:
            - name: data
              mountPath: /var/lib/postgresql/data
          livenessProbe:
            tcpSocket:
              port: postgresql
            periodSeconds: 10
  volumeClaimTemplates:
    - metadata:
        name: data
      spec:
        accessModes:
          - ReadWriteOnce
        resources:
          requests:
            storage: 1Gi