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env.js
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env.js
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const fs = require('fs')
const path = require('path')
const { SSM } = require('aws-sdk')
const env = process.env.NODE_ENV
const region = process.env.AWS_REGION
const envfile = path.resolve(__dirname, './.env')
const client = new SSM({ region, version: 'latest' })
const createFileContents = (parameters) => {
return parameters
.map((parameter) => {
const path = parameter.Name.split('/')
const name = path[path.length - 1]
return `${name}=${parameter.Value}`
})
.join('\n')
}
const loadEnv = async (callback) => {
const parameters = []
let nextToken = null
do {
const result = await loadParameters(nextToken)
nextToken = result.nextToken
parameters.push(...result.parameters)
} while (nextToken !== null)
const fileContent = createFileContents(parameters)
fs.writeFile(envfile, fileContent, (err) => {
if (err) return callback(err)
callback()
})
}
const loadParameters = async (nextToken = null) => {
const params = {
Path: `/${env}/`,
WithDecryption: true,
}
if (nextToken) {
params.NextToken = nextToken
}
const result = await client.getParametersByPath(params).promise()
return {
parameters: result.Parameters,
nextToken: result.NextToken || null,
}
}
loadEnv((err) => {
if (err) {
console.log('Error loading env from SSM:', err)
process.exit(1)
} else {
console.log('Successfully loaded env from SSM')
process.exit(0)
}
})