Handling fs

src/routes/upload.ts

@@ -27,6 +27,7 @@ export async function handleUpload(
   maxFileSize: number,
   ttlMs: number,
   publicBaseUrl?: string,
+  maxStorageUsage = 0.5,
 ): Promise<Response> {
   const contentType = req.headers.get("content-type");
   const boundary = contentType ? getBoundary(contentType) : null;
@@ -36,6 +37,15 @@ export async function handleUpload(
   const key = id;
 
   try {
+    const usage = await storage.storageUsageRatio();
+    if (usage > maxStorageUsage) {
+      log(
+        "warn",
+        `upload rejected id=${id}: storage usage ${(usage * 100).toFixed(1)}% exceeds limit ${(maxStorageUsage * 100).toFixed(0)}%`,
+      );
+      return jsonError(503, "storage is full, try again later");
+    }
+
     let filename = "";
     let mime = "application/octet-stream";
     let size = 0;