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			84 lines
		
	
	
		
			2.2 KiB
		
	
	
	
		
			TypeScript
		
	
	
			
		
		
	
	
			84 lines
		
	
	
		
			2.2 KiB
		
	
	
	
		
			TypeScript
		
	
	
import * as retry from 'async/retry'
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import * as Bluebird from 'bluebird'
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import { Model } from 'sequelize-typescript'
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import { logger } from './logger'
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function retryTransactionWrapper <T, A, B, C> (
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  functionToRetry: (arg1: A, arg2: B, arg3: C) => Promise<T> | Bluebird<T>,
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  arg1: A,
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  arg2: B,
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  arg3: C
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): Promise<T>
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function retryTransactionWrapper <T, A, B> (
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  functionToRetry: (arg1: A, arg2: B) => Promise<T> | Bluebird<T>,
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  arg1: A,
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  arg2: B
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): Promise<T>
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function retryTransactionWrapper <T, A> (
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  functionToRetry: (arg1: A) => Promise<T> | Bluebird<T>,
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  arg1: A
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): Promise<T>
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function retryTransactionWrapper <T> (
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  functionToRetry: () => Promise<T> | Bluebird<T>
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): Promise<T>
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function retryTransactionWrapper <T> (
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  functionToRetry: (...args: any[]) => Promise<T> | Bluebird<T>,
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  ...args: any[]
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): Promise<T> {
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  return transactionRetryer<T>(callback => {
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    functionToRetry.apply(null, 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(`Cannot execute ${functionToRetry.name} with many retries.`, { 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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      {
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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, err })
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          return willRetry
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        }
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      },
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      func,
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      (err, data) => err ? rej(err) : res(data)
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    )
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  })
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}
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function updateInstanceWithAnother <T extends Model<T>> (instanceToUpdate: Model<T>, baseInstance: Model<T>) {
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  const obj = baseInstance.toJSON()
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  for (const key of Object.keys(obj)) {
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    instanceToUpdate.set(key, obj[key])
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  }
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}
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function resetSequelizeInstance (instance: Model<any>, savedFields: object) {
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  Object.keys(savedFields).forEach(key => {
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    const value = savedFields[key]
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    instance.set(key, value)
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  })
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}
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// ---------------------------------------------------------------------------
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export {
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  resetSequelizeInstance,
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  retryTransactionWrapper,
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  transactionRetryer,
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  updateInstanceWithAnother
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}
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