1 files changed, 60 insertions, 0 deletions
diff --git a/cdn/src/util/S3Storage.ts b/cdn/src/util/S3Storage.ts
new file mode 100644
index 00000000..df5bc19c
--- /dev/null
+++ b/cdn/src/util/S3Storage.ts
@@ -0,0 +1,60 @@
+import { S3 } from "@aws-sdk/client-s3";
+import { Readable } from "stream";
+import { Storage } from "./Storage";
+
+const readableToBuffer = (readable: Readable): Promise<Buffer> =>
+ new Promise((resolve, reject) => {
+ const chunks: Buffer[] = [];
+ readable.on('data', chunk => chunks.push(chunk));
+ readable.on('error', reject);
+ readable.on('end', () => resolve(Buffer.concat(chunks)));
+ });
+
+export class S3Storage implements Storage {
+ public constructor(
+ private client: S3,
+ private bucket: string,
+ private basePath?: string,
+ ) {}
+
+ /**
+ * Always return a string, to ensure consistency.
+ */
+ get bucketBasePath() {
+ return this.basePath ?? '';
+ }
+
+ async set(path: string, data: Buffer): Promise<void> {
+ await this.client.putObject({
+ Bucket: this.bucket,
+ Key: `${this.bucketBasePath}${path}`,
+ Body: data
+ });
+ }
+
+ async get(path: string): Promise<Buffer | null> {
+ try {
+ const s3Object = await this.client.getObject({
+ Bucket: this.bucket,
+ Key: `${this.bucketBasePath ?? ''}${path}`
+ });
+
+ if (!s3Object.Body) return null;
+
+ const body = s3Object.Body;
+
+ return await readableToBuffer(<Readable> body);
+ } catch(err) {
+ console.error(`[CDN] Unable to get S3 object at path ${path}.`);
+ console.error(err);
+ return null;
+ }
+ }
+
+ async delete(path: string): Promise<void> {
+ await this.client.deleteObject({
+ Bucket: this.bucket,
+ Key: `${this.bucketBasePath}${path}`
+ });
+ }
+}
|
