app/src/lib/server/s3.ts


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import { S3Client } from "@aws-sdk/client-s3";
import type { Handle } from "@sveltejs/kit";

// We would obviously read from .env in prod, but it's an annoying indirection for this demo.
function getS3Client(): S3Client {
	const client = new S3Client({
		endpoint: "http://localhost:9000",
		region: "us-east-1", // Required, but ignored for local usage.
		credentials: {
			accessKeyId: "minioadmin",
			secretAccessKey: "minioadmin",
		},
		forcePathStyle: true, // Required for local service since we obv. can't use subdomains.
	});

	return client;
}

export const s3Handle = (async ({ event, resolve }) => {
	const s3Client = getS3Client();
	event.locals.s3Client = s3Client;

	try {
		return await resolve(event);
	} finally {
		s3Client.destroy();
	}
}) satisfies Handle;