49 lines
1.8 KiB
Ruby
49 lines
1.8 KiB
Ruby
#
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# Copyright (C) 2018 - present Instructure, Inc.
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#
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# This file is part of Canvas.
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#
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# Canvas is free software: you can redistribute it and/or modify it under
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# the terms of the GNU Affero General Public License as published by the Free
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# Software Foundation, version 3 of the License.
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#
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# Canvas is distributed in the hope that it will be useful, but WITHOUT ANY
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# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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# A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
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# details.
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#
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# You should have received a copy of the GNU Affero General Public License along
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# with this program. If not, see <http://www.gnu.org/licenses/>.
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class CleanUpAssignmentOverrides < ActiveRecord::Migration[5.1]
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tag :postdeploy
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disable_ddl_transaction!
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def self.up
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DataFixup::RemoveOrphanedAssignmentOverrideStudents.send_later_if_production_enqueue_args(:run,
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priority: Delayed::LOW_PRIORITY,
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max_attempts: 1,
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n_strand: 'long_datafixups'
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)
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# this fix is fast enough to run synchronously, without requiring a multi-deploy rollout of the check constraint
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DataFixup::RemoveInvalidAssignmentOverrides.run
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# we will break the constraint creation and validation into separate queries to reduce time spent in ex-lock
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execute(<<-SQL)
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ALTER TABLE #{AssignmentOverride.quoted_table_name}
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ADD CONSTRAINT require_quiz_or_assignment
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CHECK (workflow_state='deleted' OR quiz_id IS NOT NULL OR assignment_id IS NOT NULL)
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NOT VALID
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SQL
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execute("ALTER TABLE #{AssignmentOverride.quoted_table_name} VALIDATE CONSTRAINT require_quiz_or_assignment")
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end
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def self.down
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execute(<<-SQL)
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ALTER TABLE #{AssignmentOverride.quoted_table_name}
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DROP CONSTRAINT IF EXISTS require_quiz_or_assignment
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SQL
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end
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end
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