Feat:dataset retiever resource (#1123)

Co-authored-by: jyong <jyong@dify.ai>
Co-authored-by: StyleZhang <jasonapring2015@outlook.com>

api/migrations/versions/6dcb43972bdc_add_dataset_retriever_resource.py

@@ -0,0 +1,54 @@
+"""add_dataset_retriever_resource
+
+Revision ID: 6dcb43972bdc
+Revises: 4bcffcd64aa4
+Create Date: 2023-09-06 16:51:27.385844
+
+"""
+from alembic import op
+import sqlalchemy as sa
+from sqlalchemy.dialects import postgresql
+
+# revision identifiers, used by Alembic.
+revision = '6dcb43972bdc'
+down_revision = '4bcffcd64aa4'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.create_table('dataset_retriever_resources',
+    sa.Column('id', postgresql.UUID(), server_default=sa.text('uuid_generate_v4()'), nullable=False),
+    sa.Column('message_id', postgresql.UUID(), nullable=False),
+    sa.Column('position', sa.Integer(), nullable=False),
+    sa.Column('dataset_id', postgresql.UUID(), nullable=False),
+    sa.Column('dataset_name', sa.Text(), nullable=False),
+    sa.Column('document_id', postgresql.UUID(), nullable=False),
+    sa.Column('document_name', sa.Text(), nullable=False),
+    sa.Column('data_source_type', sa.Text(), nullable=False),
+    sa.Column('segment_id', postgresql.UUID(), nullable=False),
+    sa.Column('score', sa.Float(), nullable=True),
+    sa.Column('content', sa.Text(), nullable=False),
+    sa.Column('hit_count', sa.Integer(), nullable=True),
+    sa.Column('word_count', sa.Integer(), nullable=True),
+    sa.Column('segment_position', sa.Integer(), nullable=True),
+    sa.Column('index_node_hash', sa.Text(), nullable=True),
+    sa.Column('retriever_from', sa.Text(), nullable=False),
+    sa.Column('created_by', postgresql.UUID(), nullable=False),
+    sa.Column('created_at', sa.DateTime(), server_default=sa.text('CURRENT_TIMESTAMP'), nullable=False),
+    sa.PrimaryKeyConstraint('id', name='dataset_retriever_resource_pkey')
+    )
+    with op.batch_alter_table('dataset_retriever_resources', schema=None) as batch_op:
+        batch_op.create_index('dataset_retriever_resource_message_id_idx', ['message_id'], unique=False)
+
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    with op.batch_alter_table('dataset_retriever_resources', schema=None) as batch_op:
+        batch_op.drop_index('dataset_retriever_resource_message_id_idx')
+
+    op.drop_table('dataset_retriever_resources')
+    # ### end Alembic commands ###