superset 2016-09-22_10-21_3b626e2a6783_sync_db_with_models 源码
superset 2016-09-22_10-21_3b626e2a6783_sync_db_with_models 代码
文件路径:/superset/migrations/versions/2016-09-22_10-21_3b626e2a6783_sync_db_with_models.py
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied. See the License for the
# specific language governing permissions and limitations
# under the License.
"""Sync DB with the models.py.
Sqlite doesn't support alter on tables, that's why most of the operations
are surrounded with try except.
Revision ID: 3b626e2a6783
Revises: 5e4a03ef0bf0
Create Date: 2016-09-22 10:21:33.618976
"""
import logging
import sqlalchemy as sa
from alembic import op
from sqlalchemy.dialects import mysql
from superset import db
from superset.utils.core import generic_find_constraint_name
# revision identifiers, used by Alembic.
revision = "3b626e2a6783"
down_revision = "eca4694defa7"
def upgrade():
# cleanup after: https://github.com/airbnb/superset/pull/1078
try:
slices_ibfk_1 = generic_find_constraint_name(
table="slices",
columns={"druid_datasource_id"},
referenced="datasources",
database=db,
)
slices_ibfk_2 = generic_find_constraint_name(
table="slices", columns={"table_id"}, referenced="tables", database=db
)
with op.batch_alter_table("slices") as batch_op:
if slices_ibfk_1:
batch_op.drop_constraint(slices_ibfk_1, type_="foreignkey")
if slices_ibfk_2:
batch_op.drop_constraint(slices_ibfk_2, type_="foreignkey")
batch_op.drop_column("druid_datasource_id")
batch_op.drop_column("table_id")
except Exception as ex:
logging.warning(str(ex))
# fixed issue: https://github.com/airbnb/superset/issues/466
try:
with op.batch_alter_table("columns") as batch_op:
batch_op.create_foreign_key(
None, "datasources", ["datasource_name"], ["datasource_name"]
)
except Exception as ex:
logging.warning(str(ex))
try:
with op.batch_alter_table("query") as batch_op:
batch_op.create_unique_constraint("client_id", ["client_id"])
except Exception as ex:
logging.warning(str(ex))
try:
with op.batch_alter_table("query") as batch_op:
batch_op.drop_column("name")
except Exception as ex:
logging.warning(str(ex))
def downgrade():
try:
with op.batch_alter_table("tables") as batch_op:
batch_op.create_index("table_name", ["table_name"], unique=True)
except Exception as ex:
logging.warning(str(ex))
try:
with op.batch_alter_table("slices") as batch_op:
batch_op.add_column(
sa.Column(
"table_id",
mysql.INTEGER(display_width=11),
autoincrement=False,
nullable=True,
)
)
batch_op.add_column(
sa.Column(
"druid_datasource_id",
sa.Integer(),
autoincrement=False,
nullable=True,
)
)
batch_op.create_foreign_key(
"slices_ibfk_1", "datasources", ["druid_datasource_id"], ["id"]
)
batch_op.create_foreign_key("slices_ibfk_2", "tables", ["table_id"], ["id"])
except Exception as ex:
logging.warning(str(ex))
try:
fk_columns = generic_find_constraint_name(
table="columns",
columns={"datasource_name"},
referenced="datasources",
database=db,
)
with op.batch_alter_table("columns") as batch_op:
batch_op.drop_constraint(fk_columns, type_="foreignkey")
except Exception as ex:
logging.warning(str(ex))
op.add_column("query", sa.Column("name", sa.String(length=256), nullable=True))
try:
with op.batch_alter_table("query") as batch_op:
batch_op.drop_constraint("client_id", type_="unique")
except Exception as ex:
logging.warning(str(ex))
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