stacker.news/api/resolvers/serial.js

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const { UserInputError } = require('apollo-server-micro')
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const retry = require('async-retry')
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async function serialize (models, call) {
return await retry(async bail => {
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try {
const [, result] = await models.$transaction([
models.$executeRaw(SERIALIZE),
call
])
return result
} catch (error) {
console.log(error)
if (error.message.includes('SN_INSUFFICIENT_FUNDS')) {
bail(new UserInputError('insufficient funds'))
}
if (error.message.includes('SN_NOT_SERIALIZABLE')) {
bail(new Error('wallet balance transaction is not serializable'))
}
if (error.message.includes('40001')) {
throw new Error('wallet balance serialization failure - retry again')
}
bail(error)
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}
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}, {
minTimeout: 100,
factor: 1.1,
retries: 5
})
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}
const SERIALIZE = 'SET TRANSACTION ISOLATION LEVEL SERIALIZABLE'
module.exports = serialize