101 lines
2.3 KiB
TypeScript
Executable File
101 lines
2.3 KiB
TypeScript
Executable File
/* eslint-disable @typescript-eslint/naming-convention */
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import chalk from 'chalk'
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import * as dotenv from 'dotenv'
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import Postgrator from 'postgrator'
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dotenv.config()
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const log = (text: string, style: typeof chalk.white = chalk.white): void =>
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console.log(`${chalk.cyanBright('>')} ${style(text)}`)
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interface DBEnv {
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host: string
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port: number
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database: string
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username: string
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password: string
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}
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const getEnv = (): DBEnv => {
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const {
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PG_HOST: host,
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PG_PORT: port,
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PG_DB: database,
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PG_USER: username,
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PG_PASSWORD: password,
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} = process.env
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if (typeof username !== 'string') {
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throw new Error('No PG user passed in env')
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}
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if (typeof password !== 'string') {
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throw new Error('No PG password passed in env')
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}
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const config = {
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host: host || '127.0.0.1',
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port: port ? parseInt(port, 10) : 5432,
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database: database || 'omnivore',
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username,
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password,
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}
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return config
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}
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const postgrator = new Postgrator({
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migrationDirectory: __dirname + '/migrations',
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driver: 'pg',
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...getEnv(),
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// Schema table name
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schemaTable: 'schemaversion',
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// Validate migration md5 checksum to ensure the contents of the script have not changed
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validateChecksums: true,
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})
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log('Starting migration manager')
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const targetMigration = process.argv[2]
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const targetMigrationLabel = targetMigration
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? `'${chalk.blue(targetMigration)}'`
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: chalk.blue('latest')
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log(`Migrating to ${targetMigrationLabel}.\n`)
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const logAppliedMigrations = (
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appliedMigrations: Postgrator.Migration[]
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): void => {
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if (appliedMigrations.length > 0) {
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log(
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`Applied ${chalk.green(
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appliedMigrations.length.toString()
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)} migrations successfully:`
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)
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for (const migration of appliedMigrations) {
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const actionLabel =
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migration.action === 'do' ? chalk.green('+') : chalk.red('-')
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console.log(` ${actionLabel} ${migration.name}`)
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}
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} else {
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log(`No Postgres migrations applied.`)
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}
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}
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// postgres migration
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const postgresMigration = postgrator
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.migrate(targetMigration)
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.then(logAppliedMigrations)
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.catch((error) => {
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log(
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`${chalk.red('Postgres migration failed: ')}${error.message}`,
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chalk.red
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)
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const { appliedMigrations } = error
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logAppliedMigrations(appliedMigrations)
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process.exit(1)
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})
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postgresMigration.then(() => log('Exiting...'))
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