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			43 lines
		
	
	
		
			1.2 KiB
		
	
	
	
		
			TypeScript
		
	
	
			
		
		
	
	
			43 lines
		
	
	
		
			1.2 KiB
		
	
	
	
		
			TypeScript
		
	
	
import * as retry from 'async/retry'
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import * as Bluebird from 'bluebird'
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import { logger } from './logger'
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type RetryTransactionWrapperOptions = { errorMessage: string, arguments?: any[] }
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function retryTransactionWrapper <T> (
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  functionToRetry: (...args) => Promise<T> | Bluebird<T>,
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  options: RetryTransactionWrapperOptions
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): Promise<T> {
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  const args = options.arguments ? options.arguments : []
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  return transactionRetryer<T>(callback => {
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    functionToRetry.apply(this, args)
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        .then((result: T) => callback(null, result))
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        .catch(err => callback(err))
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  })
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  .catch(err => {
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    logger.error(options.errorMessage, err)
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    throw err
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  })
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}
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function transactionRetryer <T> (func: (err: any, data: T) => any) {
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  return new Promise<T>((res, rej) => {
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    retry({
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      times: 5,
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      errorFilter: err => {
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        const willRetry = (err.name === 'SequelizeDatabaseError')
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        logger.debug('Maybe retrying the transaction function.', { willRetry })
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        return willRetry
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      }
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    }, func, (err, data) => err ? rej(err) : res(data))
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  })
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}
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// ---------------------------------------------------------------------------
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export {
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  retryTransactionWrapper,
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  transactionRetryer
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}
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