# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements.  See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership.  The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License.  You may obtain a copy of the License at
#
#   http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied.  See the License for the
# specific language governing permissions and limitations
# under the License.
#
# Compose override that swaps the default Postgres metadata DB for MySQL 8.
# Useful for evaluating dialect-specific behaviour (e.g., DDL-migration
# cost on a deployment whose production metadata DB is MySQL).
#
# Usage:
#   docker compose -f docker-compose.yml -f docker-compose-mysql.yml up
#   docker compose -f docker-compose.yml -f docker-compose-mysql.yml down
#
# To switch back to Postgres, just drop the second `-f` flag — the MySQL
# data lives in a separate volume (`db_home_mysql`) so neither side is
# corrupted by switching dialects.
#
# Notes:
#   - Mirrors the connection settings used by CI's `test-mysql` shard:
#     dialect ``mysql+mysqldb``, charset utf8mb4 with binary_prefix.
#   - Host port 13306 (configurable via DATABASE_PORT_MYSQL) to avoid
#     colliding with a native MySQL install on 3306.
#   - The Postgres-specific init scripts under
#     docker/docker-entrypoint-initdb.d/ are not mounted (they are
#     postgres-only); examples / cypress fixtures still load via
#     `superset-init`'s post-startup steps.

# Shared environment override applied to every Superset-side service that
# connects to the metadata DB. ``environment:`` takes precedence over the
# values inherited from the env_file in docker-compose.yml.
x-mysql-env: &mysql-env
  DATABASE_DIALECT: mysql+mysqldb
  DATABASE_HOST: db
  DATABASE_PORT: "3306"
  DATABASE_DB: superset
  DATABASE_USER: superset
  DATABASE_PASSWORD: superset
  SQLALCHEMY_DATABASE_URI: "mysql+mysqldb://superset:superset@db:3306/superset?charset=utf8mb4&binary_prefix=true"
  # Override the analytics-examples DB connection too. ``EXAMPLES_PORT``
  # in docker/.env is hardcoded to 5432 (the Postgres port); without
  # this override the examples connection would try MySQL on 5432 and
  # fail. The examples user/DB are created by docker/mysql-init/
  # examples-init.sql on first MySQL boot.
  EXAMPLES_HOST: db
  EXAMPLES_PORT: "3306"
  EXAMPLES_DB: examples
  EXAMPLES_USER: examples
  EXAMPLES_PASSWORD: examples
  SUPERSET__SQLALCHEMY_EXAMPLES_URI: "mysql+mysqldb://examples:examples@db:3306/examples?charset=utf8mb4&binary_prefix=true"

services:
  db:
    image: mysql:8.0
    environment:
      MYSQL_DATABASE: superset
      MYSQL_USER: superset
      MYSQL_PASSWORD: superset
      MYSQL_ROOT_PASSWORD: root
    # The original 5432 port mapping is harmless on a MySQL container
    # (nothing listens on 5432 inside it) but we add 13306->3306 so the
    # MySQL port is reachable from the host without colliding with a
    # native MySQL on 3306. Compose merges port lists.
    ports:
      - "127.0.0.1:${DATABASE_PORT_MYSQL:-13306}:3306"
    # Override the init-scripts mount by re-binding the same target path
    # to a MySQL-compatible directory. Compose merges volume lists by
    # target path; later definitions win on conflict, so this displaces
    # the Postgres-specific ``./docker/docker-entrypoint-initdb.d`` mount
    # from docker-compose.yml. Without this, MySQL would try to run
    # ``cypress-init.sh`` (which invokes ``psql``, not in the MySQL
    # image), abort the init phase, and never create the ``examples``
    # database. Add the MySQL data volume separately.
    volumes:
      - db_home_mysql:/var/lib/mysql
      - ./docker/mysql-init:/docker-entrypoint-initdb.d
    command:
      - --default-authentication-plugin=caching_sha2_password
      - --character-set-server=utf8mb4
      - --collation-server=utf8mb4_0900_ai_ci
    healthcheck:
      test: ["CMD-SHELL", "mysqladmin ping -h localhost -uroot -proot --silent"]
      interval: 5s
      timeout: 5s
      retries: 20

  superset:
    environment: *mysql-env

  superset-init:
    environment: *mysql-env

  superset-worker:
    environment: *mysql-env

  superset-worker-beat:
    environment: *mysql-env

  superset-node:
    environment: *mysql-env

  superset-tests-worker:
    environment: *mysql-env

volumes:
  db_home_mysql: