78 lines
2.9 KiB
Python
78 lines
2.9 KiB
Python
# -*- encoding: utf-8 -*-
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#
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# Copyright 2016 OpenStack Foundation
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# 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, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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#
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"""mysql_float_to_timestamp
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Revision ID: 5c4f93e5bb4
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Revises: 7e6f9d542f8b
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Create Date: 2016-07-25 15:36:36.469847
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"""
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from alembic import op
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import sqlalchemy as sa
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from sqlalchemy.sql import func
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from gnocchi.indexer import sqlalchemy_base
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# revision identifiers, used by Alembic.
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revision = '5c4f93e5bb4'
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down_revision = '27d2a1d205ff'
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branch_labels = None
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depends_on = None
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def upgrade():
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bind = op.get_bind()
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if bind and bind.engine.name == "mysql":
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op.execute("SET time_zone = '+00:00'")
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# NOTE(jd) So that crappy engine that is MySQL does not have "ALTER
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# TABLE … USING …". We need to copy everything and convert…
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for table_name, column_name in (("resource", "started_at"),
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("resource", "ended_at"),
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("resource", "revision_start"),
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("resource_history", "started_at"),
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("resource_history", "ended_at"),
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("resource_history", "revision_start"),
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("resource_history", "revision_end"),
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("resource_type", "updated_at")):
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nullable = column_name == "ended_at"
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existing_type = sa.types.DECIMAL(
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precision=20, scale=6, asdecimal=True)
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existing_col = sa.Column(
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column_name,
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existing_type,
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nullable=nullable)
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temp_col = sa.Column(
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column_name + "_ts",
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sqlalchemy_base.TimestampUTC(),
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nullable=True)
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op.add_column(table_name, temp_col)
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t = sa.sql.table(table_name, existing_col, temp_col)
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op.execute(t.update().values(
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**{column_name + "_ts": func.from_unixtime(existing_col)}))
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op.drop_column(table_name, column_name)
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op.alter_column(table_name,
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column_name + "_ts",
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nullable=nullable,
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type_=sqlalchemy_base.TimestampUTC(),
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existing_nullable=nullable,
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existing_type=existing_type,
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new_column_name=column_name)
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