FastApi

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import os
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import sys
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from logging.config import fileConfig
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from alembic import context
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from sqlalchemy import engine_from_config, pool
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sys.path.append(os.path.join(sys.path[0], 'src'))
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from src.auth.models import *
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from src.config import DB_HOST, DB_NAME, DB_PASS, DB_PORT, DB_USER
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from src.database import metadata
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from src.operations.models import *
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# this is the Alembic Config object, which provides
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# access to the values within the .ini file in use.
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config = context.config
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section = config.config_ini_section
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config.set_section_option(section, "DB_HOST", DB_HOST)
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config.set_section_option(section, "DB_PORT", DB_PORT)
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config.set_section_option(section, "DB_USER", DB_USER)
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config.set_section_option(section, "DB_NAME", DB_NAME)
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config.set_section_option(section, "DB_PASS", DB_PASS)
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# Interpret the config file for Python logging.
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# This line sets up loggers basically.
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if config.config_file_name is not None:
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    fileConfig(config.config_file_name)
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# add your model's MetaData object here
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# for 'autogenerate' support
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# from myapp import mymodel
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# target_metadata = mymodel.Base.metadata
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target_metadata = metadata
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# other values from the config, defined by the needs of env.py,
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# can be acquired:
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# my_important_option = config.get_main_option("my_important_option")
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# ... etc.
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def run_migrations_offline() -> None:
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    """Run migrations in 'offline' mode.
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    This configures the context with just a URL
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    and not an Engine, though an Engine is acceptable
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    here as well.  By skipping the Engine creation
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    we don't even need a DBAPI to be available.
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    Calls to context.execute() here emit the given string to the
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    script output.
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    """
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    url = config.get_main_option("sqlalchemy.url")
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    context.configure(
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        url=url,
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        target_metadata=target_metadata,
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        literal_binds=True,
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        dialect_opts={"paramstyle": "named"},
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    )
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    with context.begin_transaction():
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        context.run_migrations()
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def run_migrations_online() -> None:
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    """Run migrations in 'online' mode.
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    In this scenario we need to create an Engine
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    and associate a connection with the context.
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    """
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    connectable = engine_from_config(
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        config.get_section(config.config_ini_section),
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        prefix="sqlalchemy.",
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        poolclass=pool.NullPool,
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    )
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    with connectable.connect() as connection:
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        context.configure(
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            connection=connection, target_metadata=target_metadata
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        )
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        with context.begin_transaction():
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            context.run_migrations()
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if context.is_offline_mode():
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    run_migrations_offline()
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else:
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    run_migrations_online()
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