forked from OpenNeo/impress-2020
Matchu
19482be2b8
Ok cool, so apparently another win we get from using `ts-node` is that I can finally easily use some non-native-Node features like ES module import syntax, for consistency with what I'm doing in the main app source! That was getting on my nerves tbh. Ooh I bet I can finally use `?.` too, I've had to rewrite that a bunch…
54 lines
1.4 KiB
JavaScript
54 lines
1.4 KiB
JavaScript
import mysql from "mysql2";
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let globalDbs = new Map();
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// We usually run against the production database, even in local testing,
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// to easily test against real data. (Not a wise general practice, but fine
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// for this low-stakes project and small dev team with mostly read-only
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// operations!)
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//
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// But you can also specify `DB_ENV=development` to use a local database,
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// which is especially helpful for end-to-end modeling testing.
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const defaultOptions =
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process.env["DB_ENV"] === "development"
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? {
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host: "localhost",
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user: "impress_2020_dev",
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password: "impress_2020_dev",
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database: "impress_2020_dev",
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}
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: {
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host: "impress.openneo.net",
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user: process.env["IMPRESS_MYSQL_USER"],
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password: process.env["IMPRESS_MYSQL_PASSWORD"],
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database: "openneo_impress",
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};
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async function connectToDb({
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host = defaultOptions.host,
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user = defaultOptions.user,
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password = defaultOptions.password,
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database = defaultOptions.database,
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} = {}) {
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if (globalDbs.has(host)) {
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return globalDbs.get(host);
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}
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const db = mysql
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.createConnection({
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host,
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user,
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password,
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database,
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multipleStatements: true,
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})
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// We upgrade to promises here, instead of using the mysql2/promise import,
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// for compatibility with Honeycomb's automatic tracing.
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.promise();
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globalDbs.set(host, db);
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return db;
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}
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module.exports = connectToDb;
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