79 lines
2.7 KiB
Python
79 lines
2.7 KiB
Python
# -*- coding: utf-8 -*- #
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# Copyright 2024 Google LLC. All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# 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, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""Spanner database splits helper."""
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from __future__ import absolute_import
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from __future__ import division
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from __future__ import unicode_literals
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from apitools.base.py import encoding
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from googlecloudsdk.api_lib.spanner import database_sessions
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from googlecloudsdk.api_lib.util import apis
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from googlecloudsdk.core import resources
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def AddSplitPoints(database_ref, split_points, initiator_string):
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"""Add split points to a database."""
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client = apis.GetClientInstance('spanner', 'v1')
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msgs = apis.GetMessagesModule('spanner', 'v1')
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req = msgs.SpannerProjectsInstancesDatabasesAddSplitPointsRequest(
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database=database_ref.RelativeName()
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)
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req.addSplitPointsRequest = msgs.AddSplitPointsRequest()
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if initiator_string:
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req.addSplitPointsRequest.initiator = initiator_string
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req.addSplitPointsRequest.splitPoints = split_points
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return client.projects_instances_databases.AddSplitPoints(req)
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def ListSplitPoints(database_ref):
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"""List the user added split points fo a database."""
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# TODO(b/362149997): Check this for both dialects.
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session_name = database_sessions.Create(database_ref, None)
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session = resources.REGISTRY.ParseRelativeName(
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relative_name=session_name.name,
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collection='spanner.projects.instances.databases.sessions',
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)
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try:
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return _TransformToSplitResult(
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database_sessions.ExecuteSql(
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'SELECT TABLE_NAME, INDEX_NAME, INITIATOR, SPLIT_KEY, EXPIRE_TIME'
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' FROM SPANNER_SYS.USER_SPLIT_POINTS',
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'NORMAL',
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session,
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)
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)
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finally:
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database_sessions.Delete(session)
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def _TransformToSplitResult(result):
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"""Transform the result of the query to a list of split points."""
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split_points = [
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{
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'TABLE_NAME': encoding.MessageToPyValue(row.entry[0]),
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'INDEX_NAME': encoding.MessageToPyValue(row.entry[1]),
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'INITIATOR': encoding.MessageToPyValue(row.entry[2]),
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'SPLIT_KEY': encoding.MessageToPyValue(row.entry[3]),
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'EXPIRE_TIME': encoding.MessageToPyValue(row.entry[4]),
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}
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for row in result.rows
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]
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return split_points
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