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115 lines
3.2 KiB
Python
115 lines
3.2 KiB
Python
import os
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from logging.config import fileConfig
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from alembic import context
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from google.cloud.sql.connector import Connector
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from sqlalchemy import create_engine
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from storage.base import Base
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target_metadata = Base.metadata
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DB_USER = os.getenv('DB_USER', 'postgres')
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DB_PASS = os.getenv('DB_PASS', 'postgres')
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DB_HOST = os.getenv('DB_HOST', 'localhost')
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DB_PORT = os.getenv('DB_PORT', '5432')
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DB_NAME = os.getenv('DB_NAME', 'openhands')
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GCP_DB_INSTANCE = os.getenv('GCP_DB_INSTANCE')
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GCP_PROJECT = os.getenv('GCP_PROJECT')
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GCP_REGION = os.getenv('GCP_REGION')
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POOL_SIZE = int(os.getenv('DB_POOL_SIZE', '25'))
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MAX_OVERFLOW = int(os.getenv('DB_MAX_OVERFLOW', '10'))
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def get_engine(database_name=DB_NAME):
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"""Create SQLAlchemy engine with optional database name."""
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if GCP_DB_INSTANCE:
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def get_db_connection():
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connector = Connector()
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instance_string = f'{GCP_PROJECT}:{GCP_REGION}:{GCP_DB_INSTANCE}'
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return connector.connect(
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instance_string,
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'pg8000',
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user=DB_USER,
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password=DB_PASS.strip(),
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db=database_name,
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)
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return create_engine(
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'postgresql+pg8000://',
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creator=get_db_connection,
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pool_size=POOL_SIZE,
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max_overflow=MAX_OVERFLOW,
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pool_pre_ping=True,
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)
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else:
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url = f'postgresql://{DB_USER}:{DB_PASS}@{DB_HOST}:{DB_PORT}/{database_name}'
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return create_engine(
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url,
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pool_size=POOL_SIZE,
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max_overflow=MAX_OVERFLOW,
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pool_pre_ping=True,
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)
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engine = get_engine()
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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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# 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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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
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with connectable.connect() as connection:
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context.configure(
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connection=connection,
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target_metadata=target_metadata,
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version_table_schema=target_metadata.schema,
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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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