nune/gitea
nune/gitea
0
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions 1

Move EventSource to SharedWorker (#12095) (#12130)

Browse source 
* Move EventSource to SharedWorker (#12095)

Backport #12095

Move EventSource to use a SharedWorker. This prevents issues with HTTP/1.1
open browser connections from preventing gitea from opening multiple tabs.

Also allow setting EVENT_SOURCE_UPDATE_TIME to disable EventSource updating

Fix #11978

Signed-off-by: Andrew Thornton <art27@cantab.net>

Co-authored-by: silverwind <me@silverwind.io>
Co-authored-by: techknowlogick <techknowlogick@gitea.io>

* Bugfix for shared event source

For some reason our eslint configuration is not working correctly
and a bug has become apparent when trying to backport this to 1.12.

Signed-off-by: Andrew Thornton <art27@cantab.net>

* Re-fix #12095 again

Unfortunately some of the suggested changes to #12095 introduced
bugs which due to caching behaviour of sharedworkers were not caught
on simple tests.

These are as follows:

* Changing from simple for loop to use includes here:

```js
  register(port) {
    if (!this.clients.includes(port)) return;

    this.clients.push(port);

    port.postMessage({
      type: 'status',
      message: `registered to ${this.url}`,
    });
  }
```

The additional `!` prevents any clients from being added and should
read:

```js
    if (this.clients.includes(port)) return;
```

* Dropping the use of jQuery `$(...)` selection and using DOM
`querySelector` here:

```js
async function receiveUpdateCount(event) {
  try {
    const data = JSON.parse(event.data);

    const notificationCount = document.querySelector('.notification_count');
    if (data.Count > 0) {
      notificationCount.classList.remove('hidden');
    } else {
      notificationCount.classList.add('hidden');
    }

    notificationCount.text() = `${data.Count}`;
    await updateNotificationTable();
  } catch (error) {
    console.error(error, event);
  }
}
```

Requires that `notificationCount.text()` be changed to use `textContent`
instead.

Signed-off-by: Andrew Thornton <art27@cantab.net>

Co-authored-by: silverwind <me@silverwind.io>
Co-authored-by: techknowlogick <techknowlogick@gitea.io>
This commit is contained in:
zeripath 2020-07-04 23:08:03 +01:00 • committed by GitHub
parent 8f64017058
commit e46dbec294
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
9 changed files with 210 additions and 36 deletions
Download patch file Download diff file Expand all files Collapse all files

92
web_src/js/features/notification.js
View file

@ -18,7 +18,25 @@ export function initNotificationsTable() {
});
}
export function initNotificationCount() {
async function receiveUpdateCount(event) {
try {
const data = JSON.parse(event.data);
const notificationCount = document.querySelector('.notification_count');
if (data.Count > 0) {
notificationCount.classList.remove('hidden');
} else {
notificationCount.classList.add('hidden');
}
notificationCount.textContent = `${data.Count}`;
await updateNotificationTable();
} catch (error) {
console.error(error, event);
}
}
export async function initNotificationCount() {
const notificationCount = $('.notification_count');
if (!notificationCount.length) {
@ -26,36 +44,52 @@ export function initNotificationCount() {
}
if (NotificationSettings.EventSourceUpdateTime > 0 && !!window.EventSource) {
// Try to connect to the event source first
const source = new EventSource(`${AppSubUrl}/user/events`);
source.addEventListener('notification-count', async (e) => {
try {
const data = JSON.parse(e.data);
const notificationCount = $('.notification_count');
if (data.Count === 0) {
notificationCount.addClass('hidden');
} else {
notificationCount.removeClass('hidden');
// Try to connect to the event source via the shared worker first
if (window.SharedWorker) {
const worker = new SharedWorker(`${__webpack_public_path__}js/eventsource.sharedworker.js`, 'notification-worker');
worker.addEventListener('error', (event) => {
console.error(event);
});
worker.port.onmessageerror = () => {
console.error('Unable to deserialize message');
};
worker.port.postMessage({
type: 'start',
url: `${window.location.origin}${AppSubUrl}/user/events`,
});
worker.port.addEventListener('message', (event) => {
if (!event.data || !event.data.type) {
console.error(event);
return;
}
if (event.data.type === 'notification-count') {
receiveUpdateCount(event.data);
} else if (event.data.type === 'error') {
console.error(event.data);
} else if (event.data.type === 'logout') {
if (event.data !== 'here') {
return;
}
worker.port.postMessage({
type: 'close',
});
worker.port.close();
window.location.href = AppSubUrl;
}
});
worker.port.addEventListener('error', (e) => {
console.error(e);
});
worker.port.start();
window.addEventListener('beforeunload', () => {
worker.port.postMessage({
type: 'close',
});
worker.port.close();
});
notificationCount.text(`${data.Count}`);
await updateNotificationTable();
} catch (error) {
console.error(error);
}
});
source.addEventListener('logout', async (e) => {
if (e.data !== 'here') {
return;
}
source.close();
window.location.href = AppSubUrl;
});
window.addEventListener('beforeunload', () => {
source.close();
});
return;
return;
}
}
if (NotificationSettings.MinTimeout <= 0) {