feat: prepare postgres sbom cutover

Assistant: codex
Assistant-Model: gpt-5.6-sol
Assistant-Session: 01a028f0-a42f-7582-89a8-ebaad7343834

migrations/env.py

@@ -0,0 +1,59 @@
+from __future__ import annotations
+
+import os
+from logging.config import fileConfig
+
+from alembic import context
+from sqlalchemy import engine_from_config, pool
+
+from sbom_nexus.database import database_url, metadata
+
+config = context.config
+
+if config.config_file_name is not None:
+    fileConfig(config.config_file_name)
+
+target_metadata = metadata
+
+configured_target = os.getenv("SBOM_NEXUS_DATABASE_URL") or os.getenv(
+    "SBOM_NEXUS_DATABASE_PATH"
+)
+if configured_target:
+    config.set_main_option(
+        "sqlalchemy.url",
+        database_url(configured_target).replace("%", "%%"),
+    )
+
+
+def run_migrations_offline() -> None:
+    context.configure(
+        url=config.get_main_option("sqlalchemy.url"),
+        target_metadata=target_metadata,
+        literal_binds=True,
+        dialect_opts={"paramstyle": "named"},
+        compare_type=True,
+    )
+    with context.begin_transaction():
+        context.run_migrations()
+
+
+def run_migrations_online() -> None:
+    connectable = engine_from_config(
+        config.get_section(config.config_ini_section, {}),
+        prefix="sqlalchemy.",
+        poolclass=pool.NullPool,
+    )
+    with connectable.connect() as connection:
+        context.configure(
+            connection=connection,
+            target_metadata=target_metadata,
+            compare_type=True,
+        )
+        with context.begin_transaction():
+            context.run_migrations()
+
+
+if context.is_offline_mode():
+    run_migrations_offline()
+else:
+    run_migrations_online()

migrations/script.py.mako

@@ -0,0 +1,25 @@
+"""${message}
+
+Revision ID: ${up_revision}
+Revises: ${down_revision | comma,n}
+Create Date: ${create_date}
+"""
+
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+${imports if imports else ""}
+
+revision: str = ${repr(up_revision)}
+down_revision: Union[str, None] = ${repr(down_revision)}
+branch_labels: Union[str, Sequence[str], None] = ${repr(branch_labels)}
+depends_on: Union[str, Sequence[str], None] = ${repr(depends_on)}
+
+
+def upgrade() -> None:
+    ${upgrades if upgrades else "pass"}
+
+
+def downgrade() -> None:
+    ${downgrades if downgrades else "pass"}

migrations/versions/0001_initial_schema.py

@@ -0,0 +1,88 @@
+"""Initial SBOM Nexus repository, snapshot, and entry schema.
+
+Revision ID: 0001
+Revises:
+Create Date: 2026-08-22
+"""
+
+from __future__ import annotations
+
+from alembic import op
+import sqlalchemy as sa
+
+revision = "0001"
+down_revision = None
+branch_labels = None
+depends_on = None
+
+
+def upgrade() -> None:
+    op.create_table(
+        "repositories",
+        sa.Column("id", sa.String(length=36), nullable=False),
+        sa.Column("slug", sa.String(length=200), nullable=False),
+        sa.Column("checkout_path", sa.Text(), nullable=True),
+        sa.Column("active", sa.Boolean(), nullable=False),
+        sa.Column("last_attempt_at", sa.DateTime(timezone=True), nullable=True),
+        sa.Column("last_success_at", sa.DateTime(timezone=True), nullable=True),
+        sa.Column("last_status", sa.String(length=50), nullable=True),
+        sa.Column("last_source", sa.String(length=200), nullable=True),
+        sa.Column("created_at", sa.DateTime(timezone=True), nullable=False),
+        sa.Column("updated_at", sa.DateTime(timezone=True), nullable=False),
+        sa.PrimaryKeyConstraint("id", name=op.f("pk_repositories")),
+        sa.UniqueConstraint("slug", name=op.f("uq_repositories_slug")),
+    )
+    op.create_table(
+        "snapshots",
+        sa.Column("id", sa.String(length=36), nullable=False),
+        sa.Column("repo_id", sa.String(length=36), nullable=False),
+        sa.Column("snapshot_at", sa.DateTime(timezone=True), nullable=False),
+        sa.Column("source", sa.String(length=200), nullable=False),
+        sa.Column("status", sa.String(length=50), nullable=False),
+        sa.Column("entry_count", sa.Integer(), nullable=False),
+        sa.Column("source_revision", sa.String(length=200), nullable=True),
+        sa.Column("sources_json", sa.JSON(), nullable=False),
+        sa.Column("errors_json", sa.JSON(), nullable=False),
+        sa.Column("legacy_id", sa.String(length=100), nullable=True),
+        sa.Column("created_at", sa.DateTime(timezone=True), nullable=False),
+        sa.ForeignKeyConstraint(
+            ["repo_id"], ["repositories.id"], name=op.f("fk_snapshots_repo_id_repositories"), ondelete="RESTRICT"
+        ),
+        sa.PrimaryKeyConstraint("id", name=op.f("pk_snapshots")),
+        sa.UniqueConstraint("legacy_id", name=op.f("uq_snapshots_legacy_id")),
+    )
+    op.create_index("ix_snapshots_repo_time", "snapshots", ["repo_id", "snapshot_at"])
+    op.create_table(
+        "entries",
+        sa.Column("id", sa.String(length=36), nullable=False),
+        sa.Column("repo_id", sa.String(length=36), nullable=False),
+        sa.Column("snapshot_id", sa.String(length=36), nullable=False),
+        sa.Column("package_name", sa.String(length=300), nullable=False),
+        sa.Column("package_version", sa.String(length=100), nullable=True),
+        sa.Column("ecosystem", sa.String(length=50), nullable=False),
+        sa.Column("license_spdx", sa.String(length=100), nullable=True),
+        sa.Column("is_direct", sa.Boolean(), nullable=False),
+        sa.Column("is_dev", sa.Boolean(), nullable=False),
+        sa.Column("source_path", sa.Text(), nullable=True),
+        sa.Column("created_at", sa.DateTime(timezone=True), nullable=False),
+        sa.ForeignKeyConstraint(
+            ["repo_id"], ["repositories.id"], name=op.f("fk_entries_repo_id_repositories"), ondelete="RESTRICT"
+        ),
+        sa.ForeignKeyConstraint(
+            ["snapshot_id"], ["snapshots.id"], name=op.f("fk_entries_snapshot_id_snapshots"), ondelete="RESTRICT"
+        ),
+        sa.PrimaryKeyConstraint("id", name=op.f("pk_entries")),
+    )
+    op.create_index("ix_entries_license", "entries", ["license_spdx"])
+    op.create_index("ix_entries_repo", "entries", ["repo_id"])
+    op.create_index("ix_entries_snapshot", "entries", ["snapshot_id"])
+
+
+def downgrade() -> None:
+    op.drop_index("ix_entries_snapshot", table_name="entries")
+    op.drop_index("ix_entries_repo", table_name="entries")
+    op.drop_index("ix_entries_license", table_name="entries")
+    op.drop_table("entries")
+    op.drop_index("ix_snapshots_repo_time", table_name="snapshots")
+    op.drop_table("snapshots")
+    op.drop_table("repositories")