63 lines
1.8 KiB
TypeScript
63 lines
1.8 KiB
TypeScript
import { PrismaClient } from "@prisma/client";
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import invariant from "tiny-invariant";
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let prisma: PrismaClient;
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declare global {
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var __db__: PrismaClient;
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}
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// this is needed because in development we don't want to restart
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// the server with every change, but we want to make sure we don't
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// create a new connection to the DB with every change either.
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// in production we'll have a single connection to the DB.
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if (process.env.NODE_ENV === "production") {
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prisma = getClient();
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} else {
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if (!global.__db__) {
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global.__db__ = getClient();
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}
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prisma = global.__db__;
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}
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function getClient() {
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const { DATABASE_URL } = process.env;
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invariant(typeof DATABASE_URL === "string", "DATABASE_URL env var not set");
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const databaseUrl = new URL(DATABASE_URL);
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const isLocalHost = databaseUrl.hostname === "localhost";
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const PRIMARY_REGION = isLocalHost ? null : process.env.PRIMARY_REGION;
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const FLY_REGION = isLocalHost ? null : process.env.FLY_REGION;
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const isReadReplicaRegion = !PRIMARY_REGION || PRIMARY_REGION === FLY_REGION;
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if (!isLocalHost) {
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databaseUrl.host = `${FLY_REGION}.${databaseUrl.host}`;
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if (!isReadReplicaRegion) {
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// 5433 is the read-replica port
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databaseUrl.port = "5433";
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}
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}
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console.log(`🔌 setting up prisma client to ${databaseUrl.host}`);
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// NOTE: during development if you change anything in this function, remember
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// that this only runs once per server restart and won't automatically be
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// re-run per request like everything else is. So if you need to change
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// something in this file, you'll need to manually restart the server.
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const client = new PrismaClient({
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datasources: {
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db: {
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url: databaseUrl.toString(),
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},
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},
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});
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// connect eagerly
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client.$connect();
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return client;
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}
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export { prisma };
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