fix(ext/cache): prevent cache insert if body is not fully written (#16138)

cli/tests/unit/cache_api_test.ts

@@ -130,7 +130,7 @@ Deno.test(async function cachePutResourceLeak() {
   await assertRejects(
     async () => {
       await cache.put(
-        new Request("https://example.com/"),
+        new Request("https://example.com/leak"),
         new Response(stream),
       );
     },
@@ -138,3 +138,30 @@ Deno.test(async function cachePutResourceLeak() {
     "leak",
   );
 });
+
+Deno.test(async function cachePutFailedBody() {
+  const cacheName = "cache-v1";
+  const cache = await caches.open(cacheName);
+
+  const request = new Request("https://example.com/failed-body");
+  const stream = new ReadableStream({
+    start(controller) {
+      controller.error(new Error("corrupt"));
+    },
+  });
+
+  await assertRejects(
+    async () => {
+      await cache.put(
+        request,
+        new Response(stream),
+      );
+    },
+    Error,
+    "corrupt",
+  );
+
+  const response = await cache.match(request);
+  // if it fails to read the body, the cache should be empty
+  assertEquals(response, undefined);
+});

ext/cache/01_cache.js

@@ -145,12 +145,12 @@
           while (true) {
             const { value, done } = await reader.read();
             if (done) {
+              await core.shutdown(rid);
               break;
             }
             await core.write(rid, value);
           }
         } finally {
-          await core.shutdown(rid);
           core.close(rid);
         }
       }