curo1305
4eb317749f
- Add backend/migrations/versions/0005_system_settings.py (revision 0005, down_revision 0004) - Creates system_settings table with 9 columns: id (UUID PK gen_random_uuid()), provider_id (String NOT NULL UNIQUE), api_key_enc (Text NULL), base_url (Text NULL), model_name (Text NOT NULL default ''), context_chars (Integer NOT NULL default 8000), is_active (Boolean NOT NULL default false), created_at/updated_at (TIMESTAMPTZ default now()) - UniqueConstraint uq_system_settings_provider_id on provider_id - Add SystemSettings ORM model to backend/db/models.py following CloudConnection style - downgrade() drops system_settings table cleanly
83 lines
2.5 KiB
Python
83 lines
2.5 KiB
Python
"""Add system_settings table for AI provider configuration.
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Revision ID: 0005
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Revises: 0004
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Create Date: 2026-06-04
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Changes:
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1. Create system_settings table with one row per AI provider.
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Stores: api_key_enc (Fernet-encrypted), base_url, model_name,
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context_chars, is_active flag, and timestamps.
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2. Add UNIQUE constraint on provider_id (uq_system_settings_provider_id)
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to enforce one row per provider name.
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Design notes (07-RESEARCH.md Pattern 1):
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- One row per provider (not key-value store) — typed columns, enforced uniqueness.
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- id column uses gen_random_uuid() server default.
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- api_key_enc is Text nullable (NULL for local providers like Ollama/LMStudio).
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- is_active = TRUE for the single active provider; all others FALSE.
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- Encryption uses HKDF with info=b"ai-provider-settings" (domain separation from
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cloud credentials which use info=b"cloud-credentials" — same master key, different
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derived keys; see services/ai_config.py).
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"""
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from __future__ import annotations
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import sqlalchemy as sa
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from sqlalchemy.dialects.postgresql import UUID as PG_UUID
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from alembic import op
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# revision identifiers, used by Alembic.
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revision = "0005"
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down_revision = "0004"
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branch_labels = None
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depends_on = None
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def upgrade() -> None:
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op.create_table("system_settings",
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sa.Column(
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"id",
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PG_UUID(as_uuid=True),
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primary_key=True,
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server_default=sa.text("gen_random_uuid()"),
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),
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sa.Column("provider_id", sa.String, nullable=False),
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sa.Column("api_key_enc", sa.Text, nullable=True),
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sa.Column("base_url", sa.Text, nullable=True),
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sa.Column(
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"model_name",
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sa.Text,
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nullable=False,
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server_default="",
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),
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sa.Column(
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"context_chars",
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sa.Integer,
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nullable=False,
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server_default="8000",
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),
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sa.Column(
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"is_active",
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sa.Boolean,
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nullable=False,
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server_default="false",
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),
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sa.Column(
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"created_at",
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sa.TIMESTAMP(timezone=True),
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nullable=False,
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server_default=sa.text("now()"),
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),
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sa.Column(
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"updated_at",
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sa.TIMESTAMP(timezone=True),
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nullable=False,
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server_default=sa.text("now()"),
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),
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sa.UniqueConstraint("provider_id", name="uq_system_settings_provider_id"),
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)
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def downgrade() -> None:
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op.drop_table("system_settings")
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