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124 lines
4.3 KiB
Python
124 lines
4.3 KiB
Python
# Licensed to the Apache Software Foundation (ASF) under one
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# or more contributor license agreements. See the NOTICE file
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# distributed with this work for additional information
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# regarding copyright ownership. The ASF licenses this file
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# to you under the Apache License, Version 2.0 (the
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# "License"); you may not use this file except in compliance
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# with the License. You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing,
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# software distributed under the License is distributed on an
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# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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# KIND, either express or implied. See the License for the
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# specific language governing permissions and limitations
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# under the License.
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"""make_names_non_nullable
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Revision ID: b6fa807eac07
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Revises: 1495eb914ad3
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Create Date: 2019-10-02 00:29:16.679272
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"""
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import sqlalchemy as sa
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from alembic import op
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from superset.utils.core import generic_find_fk_constraint_name
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# revision identifiers, used by Alembic.
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revision = "b6fa807eac07"
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down_revision = "1495eb914ad3"
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conv = {
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"fk": "fk_%(table_name)s_%(column_0_name)s_%(referred_table_name)s",
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"uq": "uq_%(table_name)s_%(column_0_name)s",
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}
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def upgrade():
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bind = op.get_bind()
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insp = sa.engine.reflection.Inspector.from_engine(bind)
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# First, drop the foreign key constraint prior to altering columns.
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fk_datasources_cluster_name_clusters = (
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generic_find_fk_constraint_name(
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"datasources", {"cluster_name"}, "clusters", insp
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)
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or "fk_datasources_cluster_name_clusters"
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)
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with op.batch_alter_table("datasources", naming_convention=conv) as batch_op:
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batch_op.drop_constraint(
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fk_datasources_cluster_name_clusters, type_="foreignkey"
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)
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# Second, make the columns non-nullable.
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with op.batch_alter_table("datasources") as batch_op:
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batch_op.alter_column(
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"cluster_name", existing_type=sa.String(250), nullable=False
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)
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with op.batch_alter_table("clusters") as batch_op:
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batch_op.alter_column(
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"cluster_name", existing_type=sa.String(250), nullable=False
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)
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with op.batch_alter_table("dbs") as batch_op:
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batch_op.alter_column(
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"database_name", existing_type=sa.String(250), nullable=False
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)
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with op.batch_alter_table("tables") as batch_op:
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batch_op.alter_column(
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"table_name", existing_type=sa.String(250), nullable=False
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)
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# Finally, re-add the foreign key constraint.
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with op.batch_alter_table("datasources") as batch_op:
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batch_op.create_foreign_key(
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fk_datasources_cluster_name_clusters,
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"clusters",
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["cluster_name"],
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["cluster_name"],
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)
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def downgrade():
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bind = op.get_bind()
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insp = sa.engine.reflection.Inspector.from_engine(bind)
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# First, drop the foreign key constraint prior to altering columns.
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fk_datasources_cluster_name_clusters = (
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generic_find_fk_constraint_name(
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"datasources", {"cluster_name"}, "clusters", insp
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)
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or "fk_datasources_cluster_name_clusters"
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)
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with op.batch_alter_table("datasources", naming_convention=conv) as batch_op:
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batch_op.drop_constraint(
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fk_datasources_cluster_name_clusters, type_="foreignkey"
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)
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# Second, make the columns nullable.
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with op.batch_alter_table("datasources") as batch_op:
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batch_op.alter_column(
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"cluster_name", existing_type=sa.String(250), nullable=True
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)
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with op.batch_alter_table("clusters") as batch_op:
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batch_op.alter_column(
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"cluster_name", existing_type=sa.String(250), nullable=True
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)
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with op.batch_alter_table("dbs") as batch_op:
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batch_op.alter_column(
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"database_name", existing_type=sa.String(250), nullable=True
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)
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with op.batch_alter_table("tables") as batch_op:
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batch_op.alter_column("table_name", existing_type=sa.String(250), nullable=True)
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# Finally, re-add the foreign key constraint.
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with op.batch_alter_table("datasources") as batch_op:
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batch_op.create_foreign_key(
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fk_datasources_cluster_name_clusters,
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"clusters",
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["cluster_name"],
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["cluster_name"],
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)
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