64 lines
		
	
	
		
			1.5 KiB
		
	
	
	
		
			Ruby
		
	
	
	
			
		
		
	
	
			64 lines
		
	
	
		
			1.5 KiB
		
	
	
	
		
			Ruby
		
	
	
	
| # frozen_string_literal: true
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| 
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| module Gitlab
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|   module Database
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|     module AsyncIndexes
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|       class IndexCreator
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|         include IndexingExclusiveLeaseGuard
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| 
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|         TIMEOUT_PER_ACTION = 1.day
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|         STATEMENT_TIMEOUT = 20.hours
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| 
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|         def initialize(async_index)
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|           @async_index = async_index
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|         end
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| 
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|         def perform
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|           try_obtain_lease do
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|             if index_exists?
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|               log_index_info('Skipping index creation as the index exists')
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|             else
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|               log_index_info('Creating async index')
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| 
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|               set_statement_timeout do
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|                 connection.execute(async_index.definition)
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|               end
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| 
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|               log_index_info('Finished creating async index')
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|             end
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| 
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|             async_index.destroy
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|           end
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|         end
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| 
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|         private
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| 
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|         attr_reader :async_index
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| 
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|         def index_exists?
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|           connection.indexes(async_index.table_name).any? { |index| index.name == async_index.name }
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|         end
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| 
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|         def connection
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|           @connection ||= async_index.connection
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|         end
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| 
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|         def lease_timeout
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|           TIMEOUT_PER_ACTION
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|         end
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| 
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|         def set_statement_timeout
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|           connection.execute("SET statement_timeout TO '%ds'" % STATEMENT_TIMEOUT)
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|           yield
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|         ensure
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|           connection.execute('RESET statement_timeout')
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|         end
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| 
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|         def log_index_info(message)
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|           Gitlab::AppLogger.info(message: message, table_name: async_index.table_name, index_name: async_index.name)
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|         end
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|       end
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|     end
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|   end
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| end
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