chore: api alembic

Author: ayushkrtiwari

src/quant_research_starter/api/alembic/env.py

@@ -0,0 +1,85 @@
+from __future__ import with_statement
+import os
+from logging.config import fileConfig
+
+from sqlalchemy import engine_from_config
+from sqlalchemy import pool
+
+from alembic import context
+
+# this is the Alembic Config object, which provides
+# access to the values within the .ini file in use.
+config = context.config
+
+# Interpret the config file for Python logging. Some environments (CI or
+# trimmed alembic.ini) may not include all logger sections; guard against
+# that to avoid stopping migrations with a KeyError.
+if config.config_file_name is not None:
+    try:
+        fileConfig(config.config_file_name)
+    except Exception:
+        # Fall back to a minimal logging configuration if the ini is missing
+        # expected logger sections (e.g. 'logger_sqlalchemy'). This makes
+        # migrations resilient when run in different environments.
+        import logging
+
+        logging.basicConfig(level=logging.INFO)
+
+target_metadata = None
+
+# Use DATABASE_URL env if provided
+db_url = os.getenv("DATABASE_URL") or config.get_main_option("sqlalchemy.url")
+if db_url:
+    # Only set the option if we have a valid string value. Avoid setting None
+    # which causes ConfigParser type errors (option values must be strings).
+    config.set_main_option("sqlalchemy.url", str(db_url))
+
+
+def run_migrations_offline():
+    url = config.get_main_option("sqlalchemy.url")
+    context.configure(url=url, target_metadata=target_metadata, literal_binds=True)
+
+    with context.begin_transaction():
+        context.run_migrations()
+
+
+def run_migrations_online():
+    # Determine whether the configured URL uses an async driver. If so,
+    # create an AsyncEngine and run the migrations inside an async context
+    # while delegating the actual migration steps to a sync callable via
+    # `connection.run_sync`. Otherwise, fall back to the classic sync path.
+    url = config.get_main_option("sqlalchemy.url")
+
+    def _do_run_migrations(connection):
+        context.configure(connection=connection, target_metadata=target_metadata)
+        with context.begin_transaction():
+            context.run_migrations()
+
+    if url and url.startswith("postgresql+asyncpg"):
+        # Async migration path
+        from sqlalchemy.ext.asyncio import create_async_engine
+        import asyncio
+
+        async_engine = create_async_engine(url, future=True)
+
+        async def run():
+            async with async_engine.connect() as connection:
+                await connection.run_sync(_do_run_migrations)
+
+        asyncio.run(run())
+    else:
+        # Sync migration path (classic)
+        connectable = engine_from_config(
+            config.get_section(config.config_ini_section),
+            prefix="sqlalchemy.",
+            poolclass=pool.NullPool,
+        )
+
+        with connectable.connect() as connection:
+            _do_run_migrations(connection)
+
+
+if context.is_offline_mode():
+    run_migrations_offline()
+else:
+    run_migrations_online()

src/quant_research_starter/api/alembic/versions/0001_initial_create_users_and_jobs.py

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+"""initial create users and backtest_jobs tables
+
+Revision ID: 0001_initial_create_users_and_jobs
+Revises: 
+Create Date: 2025-11-17
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = '0001_initial_create_users_and_jobs'
+down_revision = None
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    op.create_table(
+        'users',
+        sa.Column('id', sa.Integer(), primary_key=True),
+        sa.Column('username', sa.String(length=128), nullable=False, unique=True, index=True),
+        sa.Column('hashed_password', sa.String(length=256), nullable=False),
+        sa.Column('is_active', sa.Boolean(), nullable=False, server_default=sa.text('true')),
+        sa.Column('role', sa.String(length=32), nullable=False, server_default='user'),
+        sa.Column('created_at', sa.DateTime(), server_default=sa.func.now()),
+    )
+
+    op.create_table(
+        'backtest_jobs',
+        sa.Column('id', sa.String(length=64), primary_key=True),
+        sa.Column('user_id', sa.Integer(), sa.ForeignKey('users.id'), nullable=True),
+        sa.Column('status', sa.String(length=32), nullable=False, server_default='queued'),
+        sa.Column('params', sa.JSON(), nullable=True),
+        sa.Column('result_path', sa.String(length=1024), nullable=True),
+        sa.Column('created_at', sa.DateTime(), server_default=sa.func.now()),
+        sa.Column('updated_at', sa.DateTime(), server_default=sa.func.now(), onupdate=sa.func.now()),
+    )
+
+
+def downgrade():
+    op.drop_table('backtest_jobs')
+    op.drop_table('users')