0fc9f9d3e7
DB schema generated by a migration may look different in rails 4 and 5 (because rails 5 may use different default values). For this reason it's important to explicitly set for which rails version a migration was written for. See https://stackoverflow.com/questions/35929869/activerecordmigration-deprecation-warning-asks-for-rails-version-but-im-no/35930912#35930912
68 lines
1.9 KiB
Ruby
68 lines
1.9 KiB
Ruby
class CreateProjectCiCdSettings < ActiveRecord::Migration[4.2]
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include Gitlab::Database::MigrationHelpers
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DOWNTIME = false
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disable_ddl_transaction!
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def up
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unless table_exists?(:project_ci_cd_settings)
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create_table(:project_ci_cd_settings) do |t|
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t.integer(:project_id, null: false)
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t.boolean(:group_runners_enabled, default: true, null: false)
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end
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end
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disable_statement_timeout do
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# This particular INSERT will take between 10 and 20 seconds.
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execute 'INSERT INTO project_ci_cd_settings (project_id) SELECT id FROM projects'
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# We add the index and foreign key separately so the above INSERT statement
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# takes as little time as possible.
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add_concurrent_index(:project_ci_cd_settings, :project_id, unique: true)
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add_foreign_key_with_retry
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end
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end
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def down
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drop_table :project_ci_cd_settings
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end
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def add_foreign_key_with_retry
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if Gitlab::Database.mysql?
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# When using MySQL we don't support online upgrades, thus projects can't
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# be deleted while we are running this migration.
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return add_project_id_foreign_key
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end
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# Between the initial INSERT and the addition of the foreign key some
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# projects may have been removed, leaving orphaned rows in our new settings
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# table.
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loop do
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remove_orphaned_settings
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begin
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add_project_id_foreign_key
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break
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rescue ActiveRecord::InvalidForeignKey
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say 'project_ci_cd_settings contains some orphaned rows, retrying...'
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end
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end
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end
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def add_project_id_foreign_key
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add_concurrent_foreign_key(:project_ci_cd_settings, :projects, column: :project_id)
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end
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def remove_orphaned_settings
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execute <<~SQL
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DELETE FROM project_ci_cd_settings
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WHERE NOT EXISTS (
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SELECT 1
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FROM projects
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WHERE projects.id = project_ci_cd_settings.project_id
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)
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SQL
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end
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end
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