54 lines
1.6 KiB
Ruby
54 lines
1.6 KiB
Ruby
class FixupEnvironmentNameUniqueness < ActiveRecord::Migration[4.2]
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include Gitlab::Database::MigrationHelpers
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DOWNTIME = true
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DOWNTIME_REASON = 'Renaming non-unique environments'
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def up
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environments = Arel::Table.new(:environments)
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# Get all [project_id, name] pairs that occur more than once
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finder_sql = environments
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.group(environments[:project_id], environments[:name])
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.having(Arel.sql("COUNT(1)").gt(1))
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.project(environments[:project_id], environments[:name])
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.to_sql
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conflicting = connection.exec_query(finder_sql)
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conflicting.rows.each do |project_id, name|
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fix_duplicates(project_id, name)
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end
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end
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def down
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# Nothing to do
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end
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# Rename conflicting environments by appending "-#{id}" to all but the first
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def fix_duplicates(project_id, name)
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environments = Arel::Table.new(:environments)
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finder_sql = environments
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.where(environments[:project_id].eq(project_id))
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.where(environments[:name].eq(name))
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.order(environments[:id].asc)
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.project(environments[:id], environments[:name])
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.to_sql
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# Now we have the data for all the conflicting rows
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conflicts = connection.exec_query(finder_sql).rows
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conflicts.shift # Leave the first row alone
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conflicts.each do |id, name|
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update_sql =
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Arel::UpdateManager.new
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.table(environments)
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.set(environments[:name] => name + "-" + id.to_s)
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.where(environments[:id].eq(id))
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.to_sql
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connection.exec_update(update_sql, self.class.name, [])
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end
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end
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end
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