49 lines
1.9 KiB
Ruby
49 lines
1.9 KiB
Ruby
#
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# Copyright (C) 2020 - 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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# ---
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# We have started the process to squash migration files down to speed up
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# local development/testing. This migration will run first and check if the
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# migrations being squashed have been either fully or not-at-all applied, in
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# which case it is safe to proceed, and otherwise throws an error.
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#
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# To squash more migrations, update the `last_squashed_migration_version` and
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# bump the version in the filename of this migration so it runs again.
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class ValidateMigrationIntegrity < ActiveRecord::Migration[4.2]
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tag :predeploy
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def self.up
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initial_migration_version = "20101210192618"
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last_squashed_migration_version = "20161229165819"
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initial_migration_has_run = ActiveRecord::SchemaMigration.where(version: initial_migration_version).exists?
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last_squashed_migration_has_run = ActiveRecord::SchemaMigration.where(version: last_squashed_migration_version).exists?
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if initial_migration_has_run && !last_squashed_migration_has_run
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raise <<-ERROR
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You are trying to upgrade from a too-old version of Canvas. Please
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first upgrade to a version that includes database migration
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#{last_squashed_migration_version}.
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ERROR
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end
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end
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def self.down
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end
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end
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