Add indexes to tables apikey, flow, and user (#1349)

This pull request adds indexes to the tables apikey, flow, and user in order to improve database performance.

pyproject.toml

@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "langflow"
-version = "0.6.5a7"
+version = "0.6.5a8"
 description = "A Python package with a built-in web application"
 authors = ["Logspace <[email protected]>"]
 maintainers = [

src/backend/langflow/alembic/versions/0b8757876a7c_.py

@@ -0,0 +1,71 @@
+"""empty message
+
+Revision ID: 0b8757876a7c
+Revises: 006b3990db50
+Create Date: 2024-01-17 10:32:56.686287
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+
+# revision identifiers, used by Alembic.
+revision: str = '0b8757876a7c'
+down_revision: Union[str, None] = '006b3990db50'
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    try:
+        with op.batch_alter_table('apikey', schema=None) as batch_op:
+            batch_op.create_index(batch_op.f('ix_apikey_api_key'), ['api_key'], unique=True)
+            batch_op.create_index(batch_op.f('ix_apikey_name'), ['name'], unique=False)
+            batch_op.create_index(batch_op.f('ix_apikey_user_id'), ['user_id'], unique=False)
+    except Exception as e:
+        print(e)
+        pass
+    try:
+        with op.batch_alter_table('flow', schema=None) as batch_op:
+            batch_op.create_index(batch_op.f('ix_flow_description'), ['description'], unique=False)
+            batch_op.create_index(batch_op.f('ix_flow_name'), ['name'], unique=False)
+            batch_op.create_index(batch_op.f('ix_flow_user_id'), ['user_id'], unique=False)
+    except Exception as e:
+        print(e)
+        pass
+
+    try:
+        with op.batch_alter_table('user', schema=None) as batch_op:
+            batch_op.create_index(batch_op.f('ix_user_username'), ['username'], unique=True)
+    except Exception as e:
+        print(e)
+        pass
+    # ### end Alembic commands ###
+
+
+def downgrade() -> None:
+    # ### commands auto generated by Alembic - please adjust! ###
+    try:
+        with op.batch_alter_table('user', schema=None) as batch_op:
+            batch_op.drop_index(batch_op.f('ix_user_username'))
+    except Exception as e:
+        print(e)
+        pass
+    try:
+        with op.batch_alter_table('flow', schema=None) as batch_op:
+            batch_op.drop_index(batch_op.f('ix_flow_user_id'))
+            batch_op.drop_index(batch_op.f('ix_flow_name'))
+            batch_op.drop_index(batch_op.f('ix_flow_description'))
+    except Exception as e:
+        print(e)
+        pass
+    try:
+        with op.batch_alter_table('apikey', schema=None) as batch_op:
+            batch_op.drop_index(batch_op.f('ix_apikey_user_id'))
+            batch_op.drop_index(batch_op.f('ix_apikey_name'))
+            batch_op.drop_index(batch_op.f('ix_apikey_api_key'))
+    except Exception as e:
+        print(e)
+        pass
+    # ### end Alembic commands ###