Backend half

2025-07-11 19:56:28 +02:00
parent fa868e7c1d
commit 8600fa7c1d
19426 changed files with 3750448 additions and 8108 deletions
@@ -0,0 +1,26 @@
+import { Readable } from "stream";
+export const getAwsChunkedEncodingStream = (readableStream, options) => {
+    const { base64Encoder, bodyLengthChecker, checksumAlgorithmFn, checksumLocationName, streamHasher } = options;
+    const checksumRequired = base64Encoder !== undefined &&
+        checksumAlgorithmFn !== undefined &&
+        checksumLocationName !== undefined &&
+        streamHasher !== undefined;
+    const digest = checksumRequired ? streamHasher(checksumAlgorithmFn, readableStream) : undefined;
+    const awsChunkedEncodingStream = new Readable({ read: () => { } });
+    readableStream.on("data", (data) => {
+        const length = bodyLengthChecker(data) || 0;
+        awsChunkedEncodingStream.push(`${length.toString(16)}\r\n`);
+        awsChunkedEncodingStream.push(data);
+        awsChunkedEncodingStream.push("\r\n");
+    });
+    readableStream.on("end", async () => {
+        awsChunkedEncodingStream.push(`0\r\n`);
+        if (checksumRequired) {
+            const checksum = base64Encoder(await digest);
+            awsChunkedEncodingStream.push(`${checksumLocationName}:${checksum}\r\n`);
+            awsChunkedEncodingStream.push(`\r\n`);
+        }
+        awsChunkedEncodingStream.push(null);
+    });
+    return awsChunkedEncodingStream;
+};