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fix(zone.js): should continue to executue listeners when throw error (#41562) 

Close #41522

`zone.js` patches event listeners and run all event listeners together, if
one event handler throws error, the listeners afterward may not be invoked.

Reproduction:

```
export class AppComponent implements AfterViewInit {
  @ViewChild('btn') btn: ElementRef;
  title = 'event-error';

  constructor(private ngZone: NgZone) {}

  ngAfterViewInit() {
    this.ngZone.runOutsideAngular(() => {
      this.btn.nativeElement.addEventListener('click', () => {
        throw new Error('test1');
      });
      this.btn.nativeElement.addEventListener('click', () => {
        console.log('add eventlistener click');
      });
    });
  }
}
```

Until now no Angular users report this issue becuase in the `ngZone`, all
error will be caught and will not rethrow, so the event listeners afterward
will still continue to execute, but if the event handlers are outside of `ngZone`,
the error will break the execution.

This commit catch all errors, and after all event listeners finished invocation,
rethrow the errors in seperate `microTasks`, the reason I am using `microTask` here
is to handle multiple errors case.

PR Close #41562
This commit is contained in:
JiaLiPassion 2021-04-11 14:19:23 +08:00 committed by Andrew Kushnir
parent b64b6b3944
commit 5c48cd30b5
11 changed files with 154 additions and 64 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
packages/zone.js/lib/browser/browser.ts
View File

@ -66,7 +66,7 @@ Zone.__load_patch('EventTarget', (global: any, Zone: ZoneType, api: _ZonePrivate
// patch XMLHttpRequestEventTarget's addEventListener/removeEventListener
const XMLHttpRequestEventTarget = (global as any)['XMLHttpRequestEventTarget'];
if (XMLHttpRequestEventTarget && XMLHttpRequestEventTarget.prototype) {
api.patchEventTarget(global, [XMLHttpRequestEventTarget.prototype]);
api.patchEventTarget(global, api, [XMLHttpRequestEventTarget.prototype]);
}
});

2
packages/zone.js/lib/browser/event-target-legacy.ts
View File

@ -112,7 +112,7 @@ export function eventTargetLegacyPatch(_global: any, api: _ZonePrivate) {
}
// vh is validateHandler to check event handler
// is valid or not(for security check)
api.patchEventTarget(_global, apiTypes, {
api.patchEventTarget(_global, api, apiTypes, {
vh: checkIEAndCrossContext,
transferEventName: (eventName: string) => {
const pointerEventName = pointerEventsMap[eventName];

2
packages/zone.js/lib/browser/event-target.ts
View File

@ -29,7 +29,7 @@ export function eventTargetPatch(_global: any, api: _ZonePrivate) {
if (!EVENT_TARGET || !EVENT_TARGET.prototype) {
return;
}
api.patchEventTarget(_global, [EVENT_TARGET && EVENT_TARGET.prototype]);
api.patchEventTarget(_global, api, [EVENT_TARGET && EVENT_TARGET.prototype]);
return true;
}

2
packages/zone.js/lib/browser/shadydom.ts
View File

@ -20,7 +20,7 @@ Zone.__load_patch('shadydom', (global: any, Zone: ZoneType, api: _ZonePrivate) =
if (proto && proto.hasOwnProperty('addEventListener')) {
proto[Zone.__symbol__('addEventListener')] = null;
proto[Zone.__symbol__('removeEventListener')] = null;
api.patchEventTarget(global, [proto]);
api.patchEventTarget(global, api, [proto]);
}
});
});

2
packages/zone.js/lib/browser/webapis-rtc-peer-connection.ts
View File

@ -22,5 +22,5 @@ Zone.__load_patch('RTCPeerConnection', (global: any, Zone: ZoneType, api: _ZoneP
RTCPeerConnection.prototype[addSymbol] = null;
RTCPeerConnection.prototype[removeSymbol] = null;
api.patchEventTarget(global, [RTCPeerConnection.prototype], {useG: false});
api.patchEventTarget(global, api, [RTCPeerConnection.prototype], {useG: false});
});

2
packages/zone.js/lib/browser/websocket.ts
View File

@ -13,7 +13,7 @@ export function apply(api: _ZonePrivate, _global: any) {
// On Safari window.EventTarget doesn't exist so need to patch WS add/removeEventListener
// On older Chrome, no need since EventTarget was already patched
if (!(<any>_global).EventTarget) {
api.patchEventTarget(_global, [WS.prototype]);
api.patchEventTarget(_global, api, [WS.prototype]);
}
(<any>_global).WebSocket = function(x: any, y: any) {
const socket = arguments.length > 1 ? new WS(x, y) : new WS(x);

64
packages/zone.js/lib/common/events.ts
View File

@ -86,7 +86,7 @@ export interface PatchEventTargetOptions {
}
export function patchEventTarget(
_global: any, apis: any[], patchOptions?: PatchEventTargetOptions) {
_global: any, api: _ZonePrivate, apis: any[], patchOptions?: PatchEventTargetOptions) {
const ADD_EVENT_LISTENER = (patchOptions && patchOptions.add) || ADD_EVENT_LISTENER_STR;
const REMOVE_EVENT_LISTENER = (patchOptions && patchOptions.rm) || REMOVE_EVENT_LISTENER_STR;
@ -114,7 +114,15 @@ export function patchEventTarget(
task.originalDelegate = delegate;
}
// invoke static task.invoke
task.invoke(task, target, [event]);
// need to try/catch error here, otherwise, the error in one event listener
// will break the executions of the other event listeners. Also error will
// not remove the event listener when `once` options is true.
let error;
try {
task.invoke(task, target, [event]);
} catch (err) {
error = err;
}
const options = task.options;
if (options && typeof options === 'object' && options.once) {
// if options.once is true, after invoke once remove listener here
@ -123,10 +131,10 @@ export function patchEventTarget(
const delegate = task.originalDelegate ? task.originalDelegate : task.callback;
target[REMOVE_EVENT_LISTENER].call(target, event.type, delegate, options);
}
return error;
};
// global shared zoneAwareCallback to handle all event callback with capture = false
const globalZoneAwareCallback = function(this: unknown, event: Event) {
function globalCallback(context: unknown, event: Event, isCapture: boolean) {
// https://github.com/angular/zone.js/issues/911, in IE, sometimes
// event will be undefined, so we need to use window.event
event = event || _global.event;
@ -135,8 +143,8 @@ export function patchEventTarget(
}
// event.target is needed for Samsung TV and SourceBuffer
// || global is needed https://github.com/angular/zone.js/issues/190
const target: any = this || event.target || _global;
const tasks = target[zoneSymbolEventNames[event.type][FALSE_STR]];
const target: any = context || event.target || _global;
const tasks = target[zoneSymbolEventNames[event.type][isCapture ? TRUE_STR : FALSE_STR]];
if (tasks) {
// invoke all tasks which attached to current target with given event.type and capture = false
// for performance concern, if task.length === 1, just invoke
@ -147,46 +155,32 @@ export function patchEventTarget(
// copy the tasks array before invoke, to avoid
// the callback will remove itself or other listener
const copyTasks = tasks.slice();
const errors = [];
for (let i = 0; i < copyTasks.length; i++) {
if (event && (event as any)[IMMEDIATE_PROPAGATION_SYMBOL] === true) {
break;
}
invokeTask(copyTasks[i], target, event);
const err = invokeTask(copyTasks[i], target, event);
err && errors.push(err);
}
for (let i = 0; i < errors.length; i++) {
const err = errors[i];
api.nativeScheduleMicroTask(() => {
throw err;
});
}
}
}
}
// global shared zoneAwareCallback to handle all event callback with capture = false
const globalZoneAwareCallback = function(this: unknown, event: Event) {
return globalCallback(this, event, false);
};
// global shared zoneAwareCallback to handle all event callback with capture = true
const globalZoneAwareCaptureCallback = function(this: unknown, event: Event) {
// https://github.com/angular/zone.js/issues/911, in IE, sometimes
// event will be undefined, so we need to use window.event
event = event || _global.event;
if (!event) {
return;
}
// event.target is needed for Samsung TV and SourceBuffer
// || global is needed https://github.com/angular/zone.js/issues/190
const target: any = this || event.target || _global;
const tasks = target[zoneSymbolEventNames[event.type][TRUE_STR]];
if (tasks) {
// invoke all tasks which attached to current target with given event.type and capture = false
// for performance concern, if task.length === 1, just invoke
if (tasks.length === 1) {
invokeTask(tasks[0], target, event);
} else {
// https://github.com/angular/zone.js/issues/836
// copy the tasks array before invoke, to avoid
// the callback will remove itself or other listener
const copyTasks = tasks.slice();
for (let i = 0; i < copyTasks.length; i++) {
if (event && (event as any)[IMMEDIATE_PROPAGATION_SYMBOL] === true) {
break;
}
invokeTask(copyTasks[i], target, event);
}
}
}
return globalCallback(this, event, true);
};
function patchEventTargetMethods(obj: any, patchOptions?: PatchEventTargetOptions) {

2
packages/zone.js/lib/extra/socket-io.ts
View File

@ -8,7 +8,7 @@
Zone.__load_patch('socketio', (global: any, Zone: ZoneType, api: _ZonePrivate) => {
(Zone as any)[Zone.__symbol__('socketio')] = function patchSocketIO(io: any) {
// patch io.Socket.prototype event listener related method
api.patchEventTarget(global, [io.Socket.prototype], {
api.patchEventTarget(global, api, [io.Socket.prototype], {
useG: false,
chkDup: false,
rt: true,

4
packages/zone.js/lib/node/events.ts
View File

@ -8,7 +8,7 @@
import {patchEventTarget} from '../common/events';
Zone.__load_patch('EventEmitter', (global: any) => {
Zone.__load_patch('EventEmitter', (global: any, Zone: ZoneType, api: _ZonePrivate) => {
// For EventEmitter
const EE_ADD_LISTENER = 'addListener';
const EE_PREPEND_LISTENER = 'prependListener';
@ -34,7 +34,7 @@ Zone.__load_patch('EventEmitter', (global: any) => {
};
function patchEventEmitterMethods(obj: any) {
const result = patchEventTarget(global, [obj], {
const result = patchEventTarget(global, api, [obj], {
useG: false,
add: EE_ADD_LISTENER,
rm: EE_REMOVE_LISTENER,

42
packages/zone.js/lib/zone.ts
View File

@ -337,7 +337,7 @@ interface _ZonePrivate {
onUnhandledError: (error: Error) => void;
microtaskDrainDone: () => void;
showUncaughtError: () => boolean;
patchEventTarget: (global: any, apis: any[], options?: any) => boolean[];
patchEventTarget: (global: any, api: _ZonePrivate, apis: any[], options?: any) => boolean[];
patchOnProperties: (obj: any, properties: string[]|null, prototype?: any) => void;
patchThen: (ctro: Function) => void;
patchMethod:
@ -359,6 +359,7 @@ interface _ZonePrivate {
filterProperties: (target: any, onProperties: string[], ignoreProperties: any[]) => string[];
attachOriginToPatched: (target: any, origin: any) => void;
_redefineProperty: (target: any, callback: string, desc: any) => void;
nativeScheduleMicroTask: (func: Function) => void;
patchCallbacks:
(api: _ZonePrivate, target: any, targetName: string, method: string,
callbacks: string[]) => void;
@ -1343,27 +1344,31 @@ const Zone: ZoneType = (function(global: any) {
let _isDrainingMicrotaskQueue: boolean = false;
let nativeMicroTaskQueuePromise: any;
function nativeScheduleMicroTask(func: Function) {
if (!nativeMicroTaskQueuePromise) {
if (global[symbolPromise]) {
nativeMicroTaskQueuePromise = global[symbolPromise].resolve(0);
}
}
if (nativeMicroTaskQueuePromise) {
let nativeThen = nativeMicroTaskQueuePromise[symbolThen];
if (!nativeThen) {
// native Promise is not patchable, we need to use `then` directly
// issue 1078
nativeThen = nativeMicroTaskQueuePromise['then'];
}
nativeThen.call(nativeMicroTaskQueuePromise, func);
} else {
global[symbolSetTimeout](func, 0);
}
}
function scheduleMicroTask(task?: MicroTask) {
// if we are not running in any task, and there has not been anything scheduled
// we must bootstrap the initial task creation by manually scheduling the drain
if (_numberOfNestedTaskFrames === 0 && _microTaskQueue.length === 0) {
// We are not running in Task, so we need to kickstart the microtask queue.
if (!nativeMicroTaskQueuePromise) {
if (global[symbolPromise]) {
nativeMicroTaskQueuePromise = global[symbolPromise].resolve(0);
}
}
if (nativeMicroTaskQueuePromise) {
let nativeThen = nativeMicroTaskQueuePromise[symbolThen];
if (!nativeThen) {
// native Promise is not patchable, we need to use `then` directly
// issue 1078
nativeThen = nativeMicroTaskQueuePromise['then'];
}
nativeThen.call(nativeMicroTaskQueuePromise, drainMicroTaskQueue);
} else {
global[symbolSetTimeout](drainMicroTaskQueue, 0);
}
nativeScheduleMicroTask(drainMicroTaskQueue);
}
task && _microTaskQueue.push(task);
}
@ -1428,7 +1433,8 @@ const Zone: ZoneType = (function(global: any) {
filterProperties: () => [],
attachOriginToPatched: () => noop,
_redefineProperty: () => noop,
patchCallbacks: () => noop
patchCallbacks: () => noop,
nativeScheduleMicroTask: nativeScheduleMicroTask
};
let _currentZoneFrame: _ZoneFrame = {parent: null, zone: new Zone(null, null)};
let _currentTask: Task|null = null;

94
packages/zone.js/test/browser/browser.spec.ts
View File

@ -348,7 +348,7 @@ describe('Zone', function() {
(HTMLSpanElement.prototype as any)[zoneSymbol('addEventListener')] = null;
patchEventTarget(window, [HTMLSpanElement.prototype]);
patchEventTarget(window, null as any, [HTMLSpanElement.prototype]);
const span = document.createElement('span');
document.body.appendChild(span);
@ -1037,7 +1037,7 @@ describe('Zone', function() {
}));
it('should change options to boolean if not support passive', () => {
patchEventTarget(window, [TestEventListener.prototype]);
patchEventTarget(window, null as any, [TestEventListener.prototype]);
const testEventListener = new TestEventListener();
const listener = function() {};
@ -2490,6 +2490,96 @@ describe('Zone', function() {
expect(hookSpy).not.toHaveBeenCalled();
expect(logs).toEqual([]);
}));
it('should be able to continue to invoke remaining listeners even some listener throw error',
function(done: DoneFn) {
let logs: string[] = [];
const listener1 = function() {
logs.push('listener1');
};
const listener2 = function() {
throw new Error('test1');
};
const listener3 = function() {
throw new Error('test2');
};
const listener4 = {
handleEvent: function() {
logs.push('listener2');
}
};
button.addEventListener('click', listener1);
button.addEventListener('click', listener2);
button.addEventListener('click', listener3);
button.addEventListener('click', listener4);
const mouseEvent = document.createEvent('MouseEvent');
mouseEvent.initEvent('click', true, true);
const unhandledRejection = (e: PromiseRejectionEvent) => {
logs.push(e.reason.message);
};
window.addEventListener('unhandledrejection', unhandledRejection);
button.dispatchEvent(mouseEvent);
expect(logs).toEqual(['listener1', 'listener2']);
setTimeout(() => {
expect(logs).toEqual(['listener1', 'listener2', 'test1', 'test2']);
window.removeEventListener('unhandledrejection', unhandledRejection);
done()
});
});
it('should be able to continue to invoke remaining listeners even some listener throw error in the different zones',
function(done: DoneFn) {
let logs: string[] = [];
const zone1 = Zone.current.fork({
name: 'zone1',
onHandleError: (delegate, curr, target, error) => {
logs.push(error.message);
return false;
}
});
const listener1 = function() {
logs.push('listener1');
};
const listener2 = function() {
throw new Error('test1');
};
const listener3 = function() {
throw new Error('test2');
};
const listener4 = {
handleEvent: function() {
logs.push('listener2');
}
};
button.addEventListener('click', listener1);
zone1.run(() => {
button.addEventListener('click', listener2);
});
button.addEventListener('click', listener3);
button.addEventListener('click', listener4);
const mouseEvent = document.createEvent('MouseEvent');
mouseEvent.initEvent('click', true, true);
const unhandledRejection = (e: PromiseRejectionEvent) => {
logs.push(e.reason.message);
};
window.addEventListener('unhandledrejection', unhandledRejection);
button.dispatchEvent(mouseEvent);
expect(logs).toEqual(['listener1', 'test1', 'listener2']);
setTimeout(() => {
expect(logs).toEqual(['listener1', 'test1', 'listener2', 'test2']);
done()
});
});
});
// TODO: Re-enable via https://github.com/angular/angular/pull/41526