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feat: support abort reasons in Deno APIs and WebSocketStream (#13066)

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Andreu Botella 2021-12-16 12:57:26 +01:00 • committed by GitHub
parent 9ffc7edc23
commit 01a6b66034
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GPG key ID: 4AEE18F83AFDEB23
9 changed files with 241 additions and 63 deletions
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15
runtime/js/12_io.js
View file

@ -7,7 +7,6 @@
((window) => {
const core = window.Deno.core;
const { DOMException } = window.__bootstrap.domException;
const {
Uint8Array,
ArrayPrototypePush,
@ -123,7 +122,8 @@
async function readAllInner(r, options) {
const buffers = [];
const signal = options?.signal ?? null;
while (!signal?.aborted) {
while (true) {
signal?.throwIfAborted();
const buf = new Uint8Array(READ_PER_ITER);
const read = await r.read(buf);
if (typeof read == "number") {
@ -132,9 +132,7 @@
break;
}
}
if (signal?.aborted) {
throw new DOMException("The read operation was aborted.", "AbortError");
}
signal?.throwIfAborted();
return concatBuffers(buffers);
}
@ -200,7 +198,8 @@
const buf = new Uint8Array(size + 1); // 1B to detect extended files
let cursor = 0;
const signal = options?.signal ?? null;
while (!signal?.aborted && cursor < size) {
while (cursor < size) {
signal?.throwIfAborted();
const sliceEnd = MathMin(size + 1, cursor + READ_PER_ITER);
const slice = buf.subarray(cursor, sliceEnd);
const read = await r.read(slice);
@ -210,9 +209,7 @@
break;
}
}
if (signal?.aborted) {
throw new DOMException("The read operation was aborted.", "AbortError");
}
signal?.throwIfAborted();
// Handle truncated or extended files during read
if (cursor > size) {

21
runtime/js/40_write_file.js
View file

@ -13,9 +13,7 @@
data,
options = {},
) {
if (options?.signal?.aborted) {
throw new DOMException("The write operation was aborted.", "AbortError");
}
options.signal?.throwIfAborted();
if (options.create !== undefined) {
const create = !!options.create;
if (!create) {
@ -73,14 +71,15 @@
const signal = options?.signal ?? null;
let nwritten = 0;
while (!signal?.aborted && nwritten < data.length) {
nwritten += await file.write(TypedArrayPrototypeSubarray(data, nwritten));
}
file.close();
if (signal?.aborted) {
throw new DOMException("The write operation was aborted.", "AbortError");
try {
while (nwritten < data.length) {
signal?.throwIfAborted();
nwritten += await file.write(
TypedArrayPrototypeSubarray(data, nwritten),
);
}
} finally {
file.close();
}
}