# Three replicas and one database, which is the smallest deployment in which a @Scheduled method
# misbehaves. Run `docker compose up --scale app=3` if you would rather set the replica count
# from the command line; the three named services below exist so that each one gets a stable
# INSTANCE_ID in the transcript.
#
#   docker compose up --build
#   docker compose exec db psql -U app -d shedlockdemo -c \
#     "select instance_id, count(*) from job_execution group by instance_id"
#
# SPRING_PROFILES_ACTIVE=unlocked reproduces the duplicate executions; switch it to `locked` to
# watch the count collapse to one per tick.

services:
  db:
    image: postgres:17
    environment:
      POSTGRES_USER: app
      POSTGRES_DB: shedlockdemo
      POSTGRES_HOST_AUTH_METHOD: trust
    ports: ["5432:5432"]
    healthcheck:
      test: ["CMD-SHELL", "pg_isready -U app -d shedlockdemo"]
      interval: 2s
      timeout: 3s
      retries: 20

  replica-1: &replica
    build: .
    depends_on:
      db: { condition: service_healthy }
    environment:
      DB_URL: jdbc:postgresql://db:5432/shedlockdemo
      DB_USER: app
      INSTANCE_ID: replica-1
      SPRING_PROFILES_ACTIVE: ${PROFILE:-unlocked}

  replica-2:
    <<: *replica
    environment:
      DB_URL: jdbc:postgresql://db:5432/shedlockdemo
      DB_USER: app
      INSTANCE_ID: replica-2
      SPRING_PROFILES_ACTIVE: ${PROFILE:-unlocked}

  replica-3:
    <<: *replica
    environment:
      DB_URL: jdbc:postgresql://db:5432/shedlockdemo
      DB_USER: app
      INSTANCE_ID: replica-3
      SPRING_PROFILES_ACTIVE: ${PROFILE:-unlocked}