53 lines
2.2 KiB
Ruby
53 lines
2.2 KiB
Ruby
# frozen_string_literal: true
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# Copyright (C) 2021 - 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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# rubocop:disable Rails/SquishedSQLHeredocs
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class FixSingletonUniqueConstraint < ActiveRecord::Migration[5.2]
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disable_ddl_transaction!
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tag :predeploy
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def up
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rename_index :delayed_jobs, "index_delayed_jobs_on_singleton_not_running", "index_delayed_jobs_on_singleton_not_running_old"
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rename_index :delayed_jobs, "index_delayed_jobs_on_singleton_running", "index_delayed_jobs_on_singleton_running_old"
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# only one job can be queued in a singleton
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add_index :delayed_jobs,
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:singleton,
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where: "singleton IS NOT NULL AND (locked_by IS NULL OR locked_by = '#{::Delayed::Backend::Base::ON_HOLD_LOCKED_BY}')",
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unique: true,
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name: "index_delayed_jobs_on_singleton_not_running",
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algorithm: :concurrently,
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if_not_exists: true
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# only one job can be running for a singleton
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add_index :delayed_jobs,
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:singleton,
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where: "singleton IS NOT NULL AND locked_by IS NOT NULL AND locked_by <> '#{::Delayed::Backend::Base::ON_HOLD_LOCKED_BY}'",
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unique: true,
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name: "index_delayed_jobs_on_singleton_running",
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algorithm: :concurrently,
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if_not_exists: true
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end
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def down
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remove_index :delayed_jobs, name: "index_delayed_jobs_on_singleton_not_running_old", if_exists: true
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remove_index :delayed_jobs, name: "index_delayed_jobs_on_singleton_running_old", if_exists: true
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end
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end
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# rubocop:enable Rails/SquishedSQLHeredocs
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