Unique const for addr in ethereum_address table

db/alembic/versions/ea8185bd24c7_unique_const_for_addr.py

@@ -0,0 +1,32 @@
+"""Unique const for addr
+
+Revision ID: ea8185bd24c7
+Revises: 40871a7807f6
+Create Date: 2021-08-18 09:41:00.512462
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = 'ea8185bd24c7'
+down_revision = '40871a7807f6'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_index('ix_ethereum_addresses_address', table_name='ethereum_addresses')
+    op.create_index(op.f('ix_ethereum_addresses_address'), 'ethereum_addresses', ['address'], unique=True)
+    op.create_unique_constraint(op.f('uq_ethereum_labels_id'), 'ethereum_labels', ['id'])
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_constraint(op.f('uq_ethereum_labels_id'), 'ethereum_labels', type_='unique')
+    op.drop_index(op.f('ix_ethereum_addresses_address'), table_name='ethereum_addresses')
+    op.create_index('ix_ethereum_addresses_address', 'ethereum_addresses', ['address'], unique=False)
+    # ### end Alembic commands ###

db/moonstreamdb/models.py

@@ -113,7 +113,7 @@ class EthereumAddress(Base):  # type: ignore
         nullable=True,
         index=True,
     )
-    address = Column(VARCHAR(256), nullable=False, index=True)
+    address = Column(VARCHAR(256), nullable=False, unique=True, index=True)
     created_at = Column(
         DateTime(timezone=True), server_default=utcnow(), nullable=False
     )