35 lines
836 B
Ruby
35 lines
836 B
Ruby
class CreateInternalIdsTable < ActiveRecord::Migration
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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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create_table :internal_ids, id: :bigserial do |t|
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t.references :project
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t.integer :usage, null: false
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t.integer :last_value, null: false
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end
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unless index_exists?(:internal_ids, [:usage, :project_id])
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add_index :internal_ids, [:usage, :project_id], unique: true
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end
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unless foreign_key_exists?(:internal_ids, :project_id)
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add_concurrent_foreign_key :internal_ids, :projects, column: :project_id, on_delete: :cascade
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end
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end
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def down
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drop_table :internal_ids
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end
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private
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def foreign_key_exists?(table, column)
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foreign_keys(table).any? do |key|
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key.options[:column] == column.to_s
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end
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end
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end
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