add keyword table s3 storage support (#3065)

Co-authored-by: jyong <jyong@dify.ai>

api/migrations/versions/17b5ab037c40_add_keyworg_table_storage_type.py

@@ -0,0 +1,33 @@
+"""add-keyworg-table-storage-type
+
+Revision ID: 17b5ab037c40
+Revises: a8f9b3c45e4a
+Create Date: 2024-04-01 09:48:54.232201
+
+"""
+import sqlalchemy as sa
+from alembic import op
+
+# revision identifiers, used by Alembic.
+revision = '17b5ab037c40'
+down_revision = 'a8f9b3c45e4a'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+
+    with op.batch_alter_table('dataset_keyword_tables', schema=None) as batch_op:
+        batch_op.add_column(sa.Column('data_source_type', sa.String(length=255), server_default=sa.text("'database'::character varying"), nullable=False))
+
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+
+    with op.batch_alter_table('dataset_keyword_tables', schema=None) as batch_op:
+        batch_op.drop_column('data_source_type')
+
+    # ### end Alembic commands ###