#--- финальный конфиг для Урок 1. Apache Airflow с нуля: Архитектура, отличие от Cron и запуск в Docker https://bigdataschool.ru/blog/news/apache-airflow-architecture-docker-setup/
#--- статей посвященных бесплатному курсу ао Apache Airflow для начинающих
#---- Docker yaml для Apache Airflow 2.8.1 c LocalExecutor
version: "3.8"

x-airflow-common: &airflow-common
  image: apache/airflow:2.8.1
  environment:
    &airflow-env
    AIRFLOW__CORE__EXECUTOR: LocalExecutor
    AIRFLOW__DATABASE__SQL_ALCHEMY_CONN: postgresql+psycopg2://airflow:airflow@postgres/airflow
    AIRFLOW__CORE__FERNET_KEY: ''
    AIRFLOW__CORE__LOAD_EXAMPLES: 'false'
    AIRFLOW__CORE__DAGS_ARE_PAUSED_AT_CREATION: 'true'
    AIRFLOW__WEBSERVER__EXPOSE_CONFIG: 'true'
  volumes:
    - ./dags:/opt/airflow/dags
    - ./logs:/opt/airflow/logs
    - ./plugins:/opt/airflow/plugins
  depends_on:
    postgres:
      condition: service_healthy

services:

  postgres:
    image: postgres:13
    environment:
      POSTGRES_USER: airflow
      POSTGRES_PASSWORD: airflow
      POSTGRES_DB: airflow
    volumes:
      - postgres-db-volume:/var/lib/postgresql/data
    healthcheck:
      test: ["CMD", "pg_isready", "-U", "airflow"]
      interval: 5s
      retries: 5
    restart: always
  airflow-init:
    <<: *airflow-common
    entrypoint: /bin/bash
    command:
      - -c
      - |
        airflow db migrate
        airflow users create \
          --username admin \
          --password admin \
          --firstname Airflow \
          --lastname Admin \
          --role Admin \
          --email admin@example.com
    restart: "no"

  scheduler:
    <<: *airflow-common
    command: airflow scheduler
    restart: always

  webserver:
    <<: *airflow-common
    command: airflow webserver
    ports:
      - "8080:8080"
    restart: always

volumes:
  postgres-db-volume: