/usr/lib/python3/dist-packages/gnocchi/indexer/alembic/versions/397987e38570_no_more_slash_and_reencode.py is in python3-gnocchi 4.2.0-0ubuntu5.
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#
# Licensed 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.
#
"""Remove slashes from original resource IDs, recompute their id with creator
Revision ID: 397987e38570
Revises: aba5a217ca9b
Create Date: 2017-01-11 16:32:40.421758
"""
import uuid
from alembic import op
import six
import sqlalchemy as sa
import sqlalchemy_utils
from gnocchi import utils
# revision identifiers, used by Alembic.
revision = '397987e38570'
down_revision = 'aba5a217ca9b'
branch_labels = None
depends_on = None
resource_type_table = sa.Table(
'resource_type',
sa.MetaData(),
sa.Column('name', sa.String(255), nullable=False),
sa.Column('tablename', sa.String(35), nullable=False)
)
resource_table = sa.Table(
'resource',
sa.MetaData(),
sa.Column('id',
sqlalchemy_utils.types.uuid.UUIDType(),
nullable=False),
sa.Column('original_resource_id', sa.String(255)),
sa.Column('type', sa.String(255)),
sa.Column('creator', sa.String(255))
)
resourcehistory_table = sa.Table(
'resource_history',
sa.MetaData(),
sa.Column('id',
sqlalchemy_utils.types.uuid.UUIDType(),
nullable=False),
sa.Column('original_resource_id', sa.String(255))
)
metric_table = sa.Table(
'metric',
sa.MetaData(),
sa.Column('id',
sqlalchemy_utils.types.uuid.UUIDType(),
nullable=False),
sa.Column('name', sa.String(255)),
sa.Column('resource_id', sqlalchemy_utils.types.uuid.UUIDType())
)
uuidtype = sqlalchemy_utils.types.uuid.UUIDType()
def upgrade():
connection = op.get_bind()
resource_type_tables = {}
resource_type_tablenames = dict(
(rt.name, rt.tablename)
for rt in connection.execute(resource_type_table.select())
if rt.tablename != "generic"
)
op.drop_constraint("fk_metric_resource_id_resource_id", "metric",
type_="foreignkey")
for name, table in resource_type_tablenames.items():
op.drop_constraint("fk_%s_id_resource_id" % table, table,
type_="foreignkey")
resource_type_tables[name] = sa.Table(
table,
sa.MetaData(),
sa.Column('id',
sqlalchemy_utils.types.uuid.UUIDType(),
nullable=False),
)
for resource in connection.execute(resource_table.select()):
if resource.original_resource_id is None:
# statsd resource has no original_resource_id and is NULL
continue
try:
orig_as_uuid = uuid.UUID(str(resource.original_resource_id))
except ValueError:
pass
else:
if orig_as_uuid == resource.id:
continue
new_original_resource_id = resource.original_resource_id.replace(
'/', '_')
if six.PY2:
new_original_resource_id = new_original_resource_id.encode('utf-8')
new_id = sa.literal(uuidtype.process_bind_param(
str(utils.ResourceUUID(
new_original_resource_id, resource.creator)),
connection.dialect))
# resource table
connection.execute(
resource_table.update().where(
resource_table.c.id == resource.id
).values(
id=new_id,
original_resource_id=new_original_resource_id
)
)
# resource history table
connection.execute(
resourcehistory_table.update().where(
resourcehistory_table.c.id == resource.id
).values(
id=new_id,
original_resource_id=new_original_resource_id
)
)
if resource.type != "generic":
rtable = resource_type_tables[resource.type]
# resource table (type)
connection.execute(
rtable.update().where(
rtable.c.id == resource.id
).values(id=new_id)
)
# Metric
connection.execute(
metric_table.update().where(
metric_table.c.resource_id == resource.id
).values(
resource_id=new_id
)
)
for (name, table) in resource_type_tablenames.items():
op.create_foreign_key("fk_%s_id_resource_id" % table,
table, "resource",
("id",), ("id",),
ondelete="CASCADE")
op.create_foreign_key("fk_metric_resource_id_resource_id",
"metric", "resource",
("resource_id",), ("id",),
ondelete="SET NULL")
for metric in connection.execute(metric_table.select().where(
metric_table.c.name.like("%/%"))):
connection.execute(
metric_table.update().where(
metric_table.c.id == metric.id
).values(
name=metric.name.replace('/', '_'),
)
)
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