69 lines
2.0 KiB
Ruby
69 lines
2.0 KiB
Ruby
# See http://doc.gitlab.com/ce/development/migration_style_guide.html
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# for more information on how to write migrations for GitLab.
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class AddEnvironmentSlug < ActiveRecord::Migration
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include Gitlab::Database::MigrationHelpers
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DOWNTIME = true
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DOWNTIME_REASON = 'Adding NOT NULL column environments.slug with dependent data'
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# Used to generate random suffixes for the slug
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LETTERS = 'a'..'z'
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NUMBERS = '0'..'9'
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SUFFIX_CHARS = LETTERS.to_a + NUMBERS.to_a
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def up
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environments = Arel::Table.new(:environments)
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add_column :environments, :slug, :string
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finder = environments.project(:id, :name)
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connection.exec_query(finder.to_sql).rows.each do |id, name|
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updater = Arel::UpdateManager.new(ActiveRecord::Base).
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table(environments).
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set(environments[:slug] => generate_slug(name)).
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where(environments[:id].eq(id))
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connection.exec_update(updater.to_sql, self.class.name, [])
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end
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change_column_null :environments, :slug, false
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end
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def down
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remove_column :environments, :slug
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end
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# Copy of the Environment#generate_slug implementation
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def generate_slug(name)
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# Lowercase letters and numbers only
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slugified = name.to_s.downcase.gsub(/[^a-z0-9]/, '-')
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# Must start with a letter
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slugified = 'env-' + slugified unless LETTERS.cover?(slugified[0])
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# Repeated dashes are invalid (OpenShift limitation)
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slugified.gsub!(/\-+/, '-')
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# Maximum length: 24 characters (OpenShift limitation)
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slugified = slugified[0..23]
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# Cannot end with a dash (Kubernetes label limitation)
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slugified.chop! if slugified.end_with?('-')
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# Add a random suffix, shortening the current string if necessary, if it
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# has been slugified. This ensures uniqueness.
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if slugified != name
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slugified = slugified[0..16]
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slugified << '-' unless slugified.end_with?('-')
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slugified << random_suffix
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end
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slugified
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end
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def random_suffix
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(0..5).map { SUFFIX_CHARS.sample }.join
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end
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end
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