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import retry from 'async/retry'
import Bluebird from 'bluebird'
import { Transaction } from 'sequelize'
import { Model } from 'sequelize-typescript'
import { sequelizeTypescript } from '@server/initializers/database'
import { logger } from './logger'
function retryTransactionWrapper <T, A, B, C, D> (
functionToRetry: (arg1: A, arg2: B, arg3: C, arg4: D) => Promise<T>,
arg1: A,
arg2: B,
arg3: C,
arg4: D,
): Promise<T>
function retryTransactionWrapper <T, A, B, C> (
functionToRetry: (arg1: A, arg2: B, arg3: C) => Promise<T>,
arg1: A,
arg2: B,
arg3: C
): Promise<T>
function retryTransactionWrapper <T, A, B> (
functionToRetry: (arg1: A, arg2: B) => Promise<T>,
arg1: A,
arg2: B
): Promise<T>
function retryTransactionWrapper <T, A> (
functionToRetry: (arg1: A) => Promise<T>,
arg1: A
): Promise<T>
function retryTransactionWrapper <T> (
functionToRetry: () => Promise<T> | Bluebird<T>
): Promise<T>
function retryTransactionWrapper <T> (
functionToRetry: (...args: any[]) => Promise<T>,
...args: any[]
): Promise<T> {
return transactionRetryer<T>(callback => {
functionToRetry.apply(null, args)
.then((result: T) => callback(null, result))
.catch(err => callback(err))
})
.catch(err => {
logger.warn(`Cannot execute ${functionToRetry.name} with many retries.`, { err })
throw err
})
}
function transactionRetryer <T> (func: (err: any, data: T) => any) {
return new Promise<T>((res, rej) => {
retry(
{
times: 5,
errorFilter: err => {
const willRetry = (err.name === 'SequelizeDatabaseError')
logger.debug('Maybe retrying the transaction function.', { willRetry, err, tags: [ 'sql', 'retry' ] })
return willRetry
}
},
func,
(err, data) => err ? rej(err) : res(data)
)
})
}
function saveInTransactionWithRetries <T extends Pick<Model, 'save'>> (model: T) {
return retryTransactionWrapper(() => {
return sequelizeTypescript.transaction(async transaction => {
await model.save({ transaction })
})
})
}
// ---------------------------------------------------------------------------
function resetSequelizeInstance <T> (instance: Model<T>) {
return instance.reload()
}
function filterNonExistingModels <T extends { hasSameUniqueKeysThan (other: T): boolean }> (
fromDatabase: T[],
newModels: T[]
) {
return fromDatabase.filter(f => !newModels.find(newModel => newModel.hasSameUniqueKeysThan(f)))
}
function deleteAllModels <T extends Pick<Model, 'destroy'>> (models: T[], transaction: Transaction) {
return Promise.all(models.map(f => f.destroy({ transaction })))
}
// ---------------------------------------------------------------------------
function runInReadCommittedTransaction <T> (fn: (t: Transaction) => Promise<T>) {
const options = { isolationLevel: Transaction.ISOLATION_LEVELS.READ_COMMITTED }
return sequelizeTypescript.transaction(options, t => fn(t))
}
function afterCommitIfTransaction (t: Transaction, fn: Function) {
if (t) return t.afterCommit(() => fn())
return fn()
}
// ---------------------------------------------------------------------------
export {
resetSequelizeInstance,
retryTransactionWrapper,
transactionRetryer,
saveInTransactionWithRetries,
afterCommitIfTransaction,
filterNonExistingModels,
deleteAllModels,
runInReadCommittedTransaction
}
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