Add db table for plugin files

alembic/versions/6b66c1600d16_let_plugins_have_multiple_files.py

@@ -0,0 +1,40 @@
+"""Let plugins have multiple files
+
+Revision ID: 6b66c1600d16
+Revises: d295f8dcfa64
+Create Date: 2020-01-02 01:30:51.622962
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+# revision identifiers, used by Alembic.
+revision = "6b66c1600d16"
+down_revision = "d295f8dcfa64"
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    plugin_file: sa.Table = op.create_table(
+        "plugin_file",
+        sa.Column("plugin_id", sa.String(length=255), nullable=False),
+        sa.Column("file_name", sa.String(length=255), nullable=False),
+        sa.Column("content", sa.Text(), nullable=False),
+        sa.ForeignKeyConstraint(("plugin_id",), ["plugin.id"], onupdate="CASCADE",
+                                ondelete="CASCADE"),
+        sa.PrimaryKeyConstraint("plugin_id", "file_name"))
+
+    conn: sa.engine.Connection = op.get_bind()
+    conn.execute(plugin_file.insert().values([{
+        "plugin_id": plugin_id,
+        "file_name": "config.yaml",
+        "content": config
+    } for plugin_id, config in conn.execute("SELECT id, config FROM plugin").fetchall()]))
+
+    op.drop_column("plugin", "config")
+
+
+def downgrade():
+    op.add_column("plugin", sa.Column("config", sa.TEXT(), autoincrement=False, nullable=False))
+    op.drop_table("plugin_file")