Remove workspaces.name unique constraint

- Added some random indexes
- Fixed audit_events.request_id foreign key constraint

alembic/versions/903d7c66ff1d_remove_workspaces_name_unique_constraint.py

@@ -0,0 +1,42 @@
+"""remove workspaces.name unique constraint
+
+Revision ID: 903d7c66ff1d
+Revises: 7958cca588a1
+Create Date: 2018-09-26 10:19:13.230064
+
+"""
+from alembic import op
+import sqlalchemy as sa
+from sqlalchemy.dialects import postgresql
+
+# revision identifiers, used by Alembic.
+revision = '903d7c66ff1d'
+down_revision = '7958cca588a1'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.create_index(op.f('ix_audit_events_request_id'), 'audit_events', ['request_id'], unique=False)
+    op.create_index(op.f('ix_audit_events_workspace_id'), 'audit_events', ['workspace_id'], unique=False)
+    op.create_foreign_key(None, 'audit_events', 'requests', ['request_id'], ['id'])
+    op.alter_column('request_status_events', 'time_created',
+               existing_type=postgresql.TIMESTAMP(timezone=True),
+               nullable=False,
+               existing_server_default=sa.text('now()'))
+    op.drop_constraint('workspaces_name_key', 'workspaces', type_='unique')
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.create_unique_constraint('workspaces_name_key', 'workspaces', ['name'])
+    op.alter_column('request_status_events', 'time_created',
+               existing_type=postgresql.TIMESTAMP(timezone=True),
+               nullable=True,
+               existing_server_default=sa.text('now()'))
+    op.drop_constraint(None, 'audit_events', type_='foreignkey')
+    op.drop_index(op.f('ix_audit_events_workspace_id'), table_name='audit_events')
+    op.drop_index(op.f('ix_audit_events_request_id'), table_name='audit_events')
+    # ### end Alembic commands ###