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gh-christianlouis-docuelevate/migrations/versions/008_add_performance_indexes.py
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copilot-swe-agent[bot] 87d1b9d935 refactor(database): enforce Alembic-only database migrations, deprecate manual schema migrations
- Create alembic.ini and migrations/env.py for full Alembic CLI + programmatic support
- Add Alembic migration 006: detail column on processing_logs
- Add Alembic migration 007: ocr_quality_score column + drop unique filehash index
- Add Alembic migration 008: performance indexes
- Replace _run_schema_migrations() call in init_db() with _run_alembic_upgrade()
- Deprecate _run_schema_migrations() with DeprecationWarning
- Update tests for new Alembic-based approach and deprecation
- Update DatabaseConfiguration.md documentation

Co-authored-by: christianlouis <361235+christianlouis@users.noreply.github.com>
2026-03-01 16:47:41 +00:00

44 lines
1.7 KiB
Python

"""Add performance indexes for common query patterns
Revision ID: 008_add_performance_indexes
Revises: 007_add_ocr_quality_drop_filehash_unique
Create Date: 2026-03-01
"""
from typing import Union
from alembic import op
from sqlalchemy import text
# revision identifiers, used by Alembic.
revision: str = "008_add_performance_indexes"
down_revision: Union[str, None] = "007_add_ocr_quality_drop_filehash_unique"
depends_on: Union[str, None] = None
def upgrade() -> None:
"""Create performance indexes for file listing, filtering, and log retrieval.
Uses ``CREATE INDEX IF NOT EXISTS`` to remain idempotent — safe to run
even if the indexes were previously created by ``Base.metadata.create_all()``
or an earlier manual migration.
"""
conn = op.get_bind()
conn.execute(text("CREATE INDEX IF NOT EXISTS ix_files_created_at ON files (created_at)"))
conn.execute(text("CREATE INDEX IF NOT EXISTS ix_files_mime_type ON files (mime_type)"))
conn.execute(text("CREATE INDEX IF NOT EXISTS ix_processing_logs_file_id ON processing_logs (file_id)"))
conn.execute(text("CREATE INDEX IF NOT EXISTS ix_processing_logs_timestamp ON processing_logs (timestamp)"))
conn.execute(
text("CREATE INDEX IF NOT EXISTS ix_file_processing_steps_status ON file_processing_steps (status)")
)
def downgrade() -> None:
"""Drop performance indexes."""
op.drop_index("ix_file_processing_steps_status", table_name="file_processing_steps")
op.drop_index("ix_processing_logs_timestamp", table_name="processing_logs")
op.drop_index("ix_processing_logs_file_id", table_name="processing_logs")
op.drop_index("ix_files_mime_type", table_name="files")
op.drop_index("ix_files_created_at", table_name="files")