docker-compose.yml

version: '3'

# Configuration for the Airflow services was taken from here: https://airflow.apache.org/docs/apache-airflow/2.9.3/docker-compose.yaml
x-airflow-common:
  &airflow-common
  image: apache/airflow:2.9.3
  environment:
    &airflow-common-env
    AIRFLOW__CORE__EXECUTOR: LocalExecutor # CeleryExecutor
    AIRFLOW__DATABASE__SQL_ALCHEMY_CONN: postgresql+psycopg2://airflow:airflow@postgres/airflow
    # AIRFLOW__CELERY__RESULT_BACKEND: db+postgresql://airflow:airflow@postgres/airflow
    # AIRFLOW__CELERY__BROKER_URL: redis://:@redis:6379/0
    AIRFLOW__CORE__FERNET_KEY: ''
    AIRFLOW__CORE__DAGS_ARE_PAUSED_AT_CREATION: 'true'
    AIRFLOW__CORE__LOAD_EXAMPLES: 'false'
    AIRFLOW__API__AUTH_BACKENDS: 'airflow.api.auth.backend.basic_auth,airflow.api.auth.backend.session'
    AIRFLOW__SCHEDULER__ENABLE_HEALTH_CHECK: 'true'
    _PIP_ADDITIONAL_REQUIREMENTS: "pymongo==4.7.3 requests==2.32.3 PyYAML==6.0.1 chess==1.10.0 asyncio==3.4.3"

    PYTHONPATH: /opt/airflow:/opt/airflow/app
    DATA_DIR: /opt/airflow/data
    STOCKFISH_PATH: ${STOCKFISH_PATH:-/usr/local/bin/stockfish/stockfish-android-armv8}
    
    MONGO_INITDB_ROOT_USERNAME: ${MONGO_INITDB_ROOT_USERNAME:-root} 
    MONGO_INITDB_ROOT_PASSWORD: ${MONGO_INITDB_ROOT_PASSWORD:-example} 
    MONGO_HOST: ${MONGO_HOST}
    MONGO_PORT: ${MONGO_PORT}

  volumes:
    - ./airflow/dags:/opt/airflow/dags
    - ./airflow/logs:/opt/airflow/logs
    - ./airflow/config:/opt/airflow/config
    - ./airflow/plugins:/opt/airflow/plugins
    - ./app:/opt/airflow/app
    - ./data:/opt/airflow/data
    - ./stockfish:/usr/local/bin/stockfish

  user: "${AIRFLOW_UID:-50000}:0"
  depends_on:
    &airflow-common-depends-on
    # redis:
      # condition: service_healthy
    postgres:
      condition: service_healthy

services:
  mongo:
    image: mongo:latest
    environment:
      MONGO_INITDB_ROOT_USERNAME: ${MONGO_INITDB_ROOT_USERNAME:-root} 
      MONGO_INITDB_ROOT_PASSWORD: ${MONGO_INITDB_ROOT_PASSWORD:-example} 
    ports:
      - ${MONGO_PORT}:${MONGO_PORT}
    volumes:
      - ./data/mongo_data/:/data/db
    container_name: my-mongodb
    networks:
      - my-network

  dashboard:
    build:
      context: .
      dockerfile: dashboard/Dockerfile
    image: ${DOCKER_IMAGE_DASHBOARD:-chess-app-dashboard:latest}
    ports:
      - 8501:8501
    environment:
      - MONGO_HOST=${MONGO_HOST}
      - MONGO_PORT=${MONGO_PORT}
      - MONGO_INITDB_ROOT_USERNAME=${MONGO_INITDB_ROOT_USERNAME:-root} 
      - MONGO_INITDB_ROOT_PASSWORD=${MONGO_INITDB_ROOT_PASSWORD:-example} 
      - PYTHONPATH=/app:/dashboard
    volumes:
      - ./app:/app
      - ./dashboard:/dashboard
      - ./data:/data
      - ./stockfish:/usr/local/bin/stockfish
    networks:
      - my-network
  
  # spark:
  #   build: ./app/spark
  #   environment:
  #     SPARK_MASTER_HOST: spark-master
  #   networks:
  #     - my-network
  
  postgres:
    image: postgres:13
    environment:
      POSTGRES_USER: ${POSTGRES_USER:-airflow}
      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD:-airflow}
      POSTGRES_DB: ${POSTGRES_DB:-airflow}
    volumes:
      - ./data/postgres-db-volume:/var/lib/postgresql/data
    healthcheck:
      test: ["CMD", "pg_isready", "-U", "airflow"]
      interval: 10s
      retries: 5
      start_period: 5s
    restart: always
    networks:
      - my-network

  airflow-webserver:
    <<: *airflow-common
    command: webserver
    ports:
      - "8080:8080"
    healthcheck:
      test: ["CMD", "curl", "--fail", "http://localhost:8080/health"]
      interval: 30s
      timeout: 10s
      retries: 5
      start_period: 30s
    restart: always
    depends_on:
      <<: *airflow-common-depends-on
      airflow-init:
        condition: service_completed_successfully
    networks:
      - my-network
  
  airflow-scheduler:
    <<: *airflow-common
    command: scheduler
    healthcheck:
      test: ["CMD", "curl", "--fail", "http://localhost:8974/health"]
      interval: 30s
      timeout: 10s
      retries: 5
      start_period: 30s
    restart: always
    depends_on:
      <<: *airflow-common-depends-on
      airflow-init:
        condition: service_completed_successfully
    networks:
      - my-network

  airflow-init:
    <<: *airflow-common
    entrypoint: /bin/bash
    # yamllint disable rule:line-length
    command:
      - -c
      - |
        if [[ -z "${AIRFLOW_UID}" ]]; then
          echo
          echo -e "\033[1;33mWARNING!!!: AIRFLOW_UID not set!\e[0m"
          echo "If you are on Linux, you SHOULD follow the instructions below to set "
          echo "AIRFLOW_UID environment variable, otherwise files will be owned by root."
          echo "For other operating systems you can get rid of the warning with manually created .env file:"
          echo "    See: https://airflow.apache.org/docs/apache-airflow/stable/howto/docker-compose/index.html#setting-the-right-airflow-user"
          echo
        fi
        one_meg=1048576
        mem_available=$$(($$(getconf _PHYS_PAGES) * $$(getconf PAGE_SIZE) / one_meg))
        cpus_available=$$(grep -cE 'cpu[0-9]+' /proc/stat)
        disk_available=$$(df / | tail -1 | awk '{print $$4}')
        warning_resources="false"
        if (( mem_available < 4000 )) ; then
          echo
          echo -e "\033[1;33mWARNING!!!: Not enough memory available for Docker.\e[0m"
          echo "At least 4GB of memory required. You have $$(numfmt --to iec $$((mem_available * one_meg)))"
          echo
          warning_resources="true"
        fi
        if (( cpus_available < 2 )); then
          echo
          echo -e "\033[1;33mWARNING!!!: Not enough CPUS available for Docker.\e[0m"
          echo "At least 2 CPUs recommended. You have $${cpus_available}"
          echo
          warning_resources="true"
        fi
        if (( disk_available < one_meg * 10 )); then
          echo
          echo -e "\033[1;33mWARNING!!!: Not enough Disk space available for Docker.\e[0m"
          echo "At least 10 GBs recommended. You have $$(numfmt --to iec $$((disk_available * 1024 )))"
          echo
          warning_resources="true"
        fi
        if [[ $${warning_resources} == "true" ]]; then
          echo
          echo -e "\033[1;33mWARNING!!!: You have not enough resources to run Airflow (see above)!\e[0m"
          echo "Please follow the instructions to increase amount of resources available:"
          echo "   https://airflow.apache.org/docs/apache-airflow/stable/howto/docker-compose/index.html#before-you-begin"
          echo
        fi
        chown -R "${AIRFLOW_UID}:0" /sources/{logs,dags,plugins}
        exec /entrypoint airflow version
    # removed this line after most recent fi: `mkdir -p /sources/logs /sources/dags /sources/plugins`
    
    # yamllint enable rule:line-length
    environment:
      <<: *airflow-common-env
      _AIRFLOW_DB_MIGRATE: 'true'
      _AIRFLOW_WWW_USER_CREATE: 'true'
      _AIRFLOW_WWW_USER_USERNAME: ${_AIRFLOW_WWW_USER_USERNAME:-airflow}
      _AIRFLOW_WWW_USER_PASSWORD: ${_AIRFLOW_WWW_USER_PASSWORD:-airflow}
      _PIP_ADDITIONAL_REQUIREMENTS: ''
    user: "0:0"
    volumes:
      - ${AIRFLOW_PROJ_DIR:-.}:/sources
    networks:
      - my-network

networks:
  my-network:
    driver: bridge