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# frozen_string_literal: true
module Gitlab
module Database
module Migrations
module Observers
class TotalDatabaseSizeChange < MigrationObserver
def before
@size_before = get_total_database_size
end
def after
@size_after = get_total_database_size
end
def record(observation)
return unless @size_after && @size_before
observation.total_database_size_change = @size_after - @size_before
end
private
def get_total_database_size
connection.execute("select pg_database_size(current_database())").first['pg_database_size']
end
end
end
end
end
end
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