39 lines
1.7 KiB
Ruby
39 lines
1.7 KiB
Ruby
# frozen_string_literal: true
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class ChangeCommitUserMentionsCommitIdColumnType < ActiveRecord::Migration[5.2]
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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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OLD_INDEX = 'commit_user_mentions_on_commit_id_and_note_id_index'
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OLD_TMP_INDEX = 'temp_commit_id_and_note_id_index'
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NEW_TMP_INDEX = 'temp_commit_id_for_type_change_and_note_id_index'
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NEW_INDEX = 'commit_id_and_note_id_index'
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# rubocop:disable Migration/PreventStrings
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def up
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# the initial index name is too long and fails during migration. Renaming the index first.
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add_concurrent_index :commit_user_mentions, [:commit_id, :note_id], name: OLD_TMP_INDEX
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remove_concurrent_index_by_name :commit_user_mentions, OLD_INDEX
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change_column_type_concurrently :commit_user_mentions, :commit_id, :string
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# change_column_type_concurrently creates a new index for new column `commit_id_for_type` based on existing
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# `temp_commit_id_and_note_id_index` naming it `temp_commit_id_for_type_change_and_note_id_index`, yet keeping
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# `temp_commit_id_and_note_id_index` for `commit_id`, that will be cleaned
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# by `cleanup_concurrent_column_type_change :commit_user_mentions, :commit_id` in a later migration.
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#
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# So we'll rename `temp_commit_id_for_type_change_and_note_id_index` to initialy intended name: `commit_id_and_note_id_index`.
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add_concurrent_index :commit_user_mentions, [:commit_id_for_type_change, :note_id], name: NEW_INDEX
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remove_concurrent_index_by_name :commit_user_mentions, NEW_TMP_INDEX
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end
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# rubocop:enable Migration/PreventStrings
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def down
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cleanup_concurrent_column_type_change :commit_user_mentions, :commit_id
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end
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end
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