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New websocket message format for both clients

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This commit is contained in:
FinnStutzenstein 2018-08-23 15:28:57 +02:00 committed by Oskar Hahn
parent fed6d6f435
commit 22f7d84cae
7 changed files with 190 additions and 53 deletions
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12
client/src/app/app.component.ts
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@ -1,5 +1,7 @@
import { Component, OnInit } from '@angular/core';
import { TranslateService } from '@ngx-translate/core';
import { AutoupdateService } from './core/services/autoupdate.service';
import { NotifyService } from './core/services/notify.service';
/**
* Angular's global App Component
@ -12,11 +14,15 @@ import { TranslateService } from '@ngx-translate/core';
export class AppComponent {
/**
* Initialises the operator, the auto update (and therefore a websocket) feature and the translation unit.
* @param operator
* @param autoupdate
* @param autoupdateService
* @param notifyService
* @param translate
*/
constructor(private translate: TranslateService) {
constructor(
private autoupdateService: AutoupdateService,
private notifyService: NotifyService,
private translate: TranslateService
) {
// manually add the supported languages
translate.addLangs(['en', 'de', 'fr']);
// this language will be used as a fallback when a translation isn't found in the current language

17
client/src/app/core/services/autoupdate.service.ts
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@ -33,26 +33,13 @@ import { User } from 'app/shared/models/users/user';
providedIn: 'root'
})
export class AutoupdateService extends OpenSlidesComponent {
/**
* Stores the to create the socket created using {@link WebsocketService}.
*/
private socket;
/**
* Constructor to create the AutoupdateService. Calls the constructor of the parent class.
* @param websocketService
*/
constructor(private websocketService: WebsocketService) {
super();
}
/**
* Function to start the automatic update process
* will build up a websocket connection using {@link WebsocketService}
*/
startAutoupdate(): void {
this.socket = this.websocketService.connect();
this.socket.subscribe(response => {
websocketService.getOberservable<any>('autoupdate').subscribe(response => {
this.storeResponse(response);
});
}
@ -69,8 +56,6 @@ export class AutoupdateService extends OpenSlidesComponent {
socketResponse.forEach(jsonObj => {
const targetClass = this.getClassFromCollectionString(jsonObj.collection);
if (jsonObj.action === 'deleted') {
console.log('storeResponse detect delete');
this.DS.remove(jsonObj.collection, jsonObj.id);
} else {
this.DS.add(new targetClass().deserialize(jsonObj.data));

15
client/src/app/core/services/notify.service.spec.ts Normal file
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@ -0,0 +1,15 @@
import { TestBed, inject } from '@angular/core/testing';
import { NotifyService } from './notify.service';
describe('WebsocketService', () => {
beforeEach(() => {
TestBed.configureTestingModule({
providers: [NotifyService]
});
});
it('should be created', inject([NotifyService], (service: NotifyService) => {
expect(service).toBeTruthy();
}));
});

42
client/src/app/core/services/notify.service.ts Normal file
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@ -0,0 +1,42 @@
import { Injectable } from '@angular/core';
import { OpenSlidesComponent } from 'app/openslides.component';
import { WebsocketService } from './websocket.service';
interface NotifyFormat {
id: number; //Dummy
}
/**
* Handles all incoming and outgoing notify messages via {@link WebsocketService}.
*/
@Injectable({
providedIn: 'root'
})
export class NotifyService extends OpenSlidesComponent {
/**
* Constructor to create the NotifyService. Registers itself to the WebsocketService.
* @param websocketService
*/
constructor(private websocketService: WebsocketService) {
super();
websocketService.getOberservable<any>('notify').subscribe(notify => {
this.receive(notify);
});
}
// TODO: Implement this
private receive(notify: NotifyFormat): void {
console.log('recv', notify);
// TODO: Use a Subject, so one can subscribe and get notifies.
}
// TODO: Make this api better: e.g. send(data, users?, projectors?, channel?, ...)
/**
* Sents a notify object to the server
* @param notify the notify objects
*/
public send(notify: NotifyFormat): void {
this.websocketService.send('notify', notify);
}
}

67
client/src/app/core/services/websocket.service.ts
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@ -1,6 +1,13 @@
import { Injectable } from '@angular/core';
import { Router } from '@angular/router';
import { webSocket, WebSocketSubject } from 'rxjs/webSocket';
import { Observable, Subject } from 'rxjs';
interface WebsocketMessage {
type: string;
content: any;
id: string;
}
/**
* Service that handles WebSocket connections.
@ -20,21 +27,71 @@ export class WebsocketService {
/**
* Observable subject that might be `any` for simplicity, `MessageEvent` or something appropriate
*/
private subject: WebSocketSubject<any>;
private _websocketSubject: WebSocketSubject<WebsocketMessage>;
/**
* Subjects for types of websocket messages. A subscriber can get an Observable by {@function getOberservable}.
*/
private _subjects: { [type: string]: Subject<any> } = {};
/**
* Creates a new WebSocket connection as WebSocketSubject
*
* Can return old Subjects to prevent multiple WebSocket connections.
*/
public connect(): WebSocketSubject<any> {
public connect(): void {
const socketProtocol = this.getWebSocketProtocol();
const socketPath = this.getWebSocketPath();
const socketServer = window.location.hostname + ':' + window.location.port;
if (!this.subject) {
this.subject = webSocket(socketProtocol + socketServer + socketPath);
if (!this._websocketSubject) {
this._websocketSubject = webSocket(socketProtocol + socketServer + socketPath);
// directly subscribe. The messages are distributes below
this._websocketSubject.subscribe(message => {
const type: string = message.type;
if (type === 'error') {
console.error('Websocket error', message.content);
} else if (this._subjects[type]) {
this._subjects[type].next(message.content);
} else {
console.log(`Got unknown websocket message type "${type}" with content`, message.content);
}
return this.subject;
});
}
}
/**
* Returns an observable for messages of the given type.
* @param type the message type
*/
public getOberservable<T>(type: string): Observable<T> {
if (!this._subjects[type]) {
this._subjects[type] = new Subject<T>();
}
return this._subjects[type].asObservable();
}
/**
* Sends a message to the server with the content and the given type.
*
* @param type the message type
* @param content the actual content
*/
public send<T>(type: string, content: T): void {
if (!this._websocketSubject) {
return;
}
const message: WebsocketMessage = {
type: type,
content: content,
id: ''
};
const possible = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz';
for (let i = 0; i < 8; i++) {
message.id += possible.charAt(Math.floor(Math.random() * possible.length));
}
this._websocketSubject.next(message);
}
/**

8
client/src/app/site/site.component.ts
View File

@ -3,8 +3,8 @@ import { Router } from '@angular/router';
import { BreakpointObserver, Breakpoints, BreakpointState } from '@angular/cdk/layout';
import { AuthService } from 'app/core/services/auth.service';
import { AutoupdateService } from 'app/core/services/autoupdate.service';
import { OperatorService } from 'app/core/services/operator.service';
import { WebsocketService } from 'app/core/services/websocket.service';
import { TranslateService } from '@ngx-translate/core'; //showcase
import { BaseComponent } from 'app/base.component';
@ -33,7 +33,7 @@ export class SiteComponent extends BaseComponent implements OnInit {
* Constructor
*
* @param authService
* @param autoupdateService
* @param websocketService
* @param operator
* @param router
* @param breakpointObserver
@ -42,7 +42,7 @@ export class SiteComponent extends BaseComponent implements OnInit {
*/
constructor(
private authService: AuthService,
private autoupdateService: AutoupdateService,
private websocketService: WebsocketService,
private operator: OperatorService,
private router: Router,
public vp: ViewportService,
@ -66,7 +66,7 @@ export class SiteComponent extends BaseComponent implements OnInit {
// start autoupdate if the user is logged in:
this.operator.whoAmI().subscribe(resp => {
if (resp.user) {
this.autoupdateService.startAutoupdate();
this.websocketService.connect();
} else {
//if whoami is not sucsessfull, forward to login again
this.operator.clear();

56
openslides/core/static/js/core/base.js
View File

@ -117,11 +117,11 @@ angular.module('OpenSlidesApp.core', [
$timeout(runRetryConnectCallbacks, getTimeoutTime());
};
socket.onmessage = function (event) {
var dataList = [];
var data;
try {
dataList = JSON.parse(event.data);
data = JSON.parse(event.data);
_.forEach(Autoupdate.messageReceivers, function (receiver) {
receiver(dataList);
receiver(data);
});
} catch(err) {
console.error(err);
@ -133,10 +133,23 @@ angular.module('OpenSlidesApp.core', [
ErrorMessage.clearConnectionError();
};
};
Autoupdate.send = function (message) {
if (socket) {
socket.send(JSON.stringify(message));
Autoupdate.send = function (type, content) {
if (!socket) {
return;
}
var message = {
type: type,
content: content,
id: '',
};
// Generate random id
var possible = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz';
for (var i = 0; i < 8; i++) {
message.id += possible.charAt(Math.floor(Math.random() * possible.length));
}
socket.send(JSON.stringify(message));
};
Autoupdate.closeConnection = function () {
if (socket) {
@ -369,7 +382,12 @@ angular.module('OpenSlidesApp.core', [
'dsEject',
function (DS, autoupdate, dsEject) {
// Handler for normal autoupdate messages.
autoupdate.onMessage(function(dataList) {
autoupdate.onMessage(function(data) {
if (data.type !== 'autoupdate') {
return;
}
var dataList = data.content;
var dataListByCollection = _.groupBy(dataList, 'collection');
_.forEach(dataListByCollection, function (list, key) {
var changedElements = [];
@ -379,8 +397,6 @@ angular.module('OpenSlidesApp.core', [
// Uncomment this line for debugging to log all autoupdates:
// console.log("Received object: " + data.collection + ", " + data.id);
// Now handle autoupdate message but do not handle notify messages.
if (data.collection !== 'notify') {
// remove (=eject) object from local DS store
var instance = DS.get(data.collection, data.id);
if (instance) {
@ -395,7 +411,6 @@ angular.module('OpenSlidesApp.core', [
console.error('Error: Undefined action for received object' +
'(' + data.collection + ', ' + data.id + ')');
}
}
});
// add (=inject) all given objects into local DS store
if (changedElements.length > 0) {
@ -418,7 +433,12 @@ angular.module('OpenSlidesApp.core', [
var anonymousTrackId;
// Handler for notify messages.
autoupdate.onMessage(function(dataList) {
autoupdate.onMessage(function(data) {
if (data.type !== 'notify') {
return;
}
var dataList = data.content;
var dataListByCollection = _.groupBy(dataList, 'collection');
_.forEach(dataListByCollection.notify, function (notifyItem) {
// Check, if this current user (or anonymous instance) has send this notify.
@ -505,7 +525,7 @@ angular.module('OpenSlidesApp.core', [
}
notifyItem.anonymousTrackId = anonymousTrackId;
}
autoupdate.send([notifyItem]);
autoupdate.send('notify', [notifyItem]);
} else {
throw 'eventName should only consist of [a-zA-Z0-9_-]';
}
@ -514,6 +534,18 @@ angular.module('OpenSlidesApp.core', [
}
])
.run([
'autoupdate',
function (autoupdate) {
// Handler for normal autoupdate messages.
autoupdate.onMessage(function (data) {
if (data.type === 'error') {
console.error("Websocket error", data.content);
}
});
}
])
// Save the server time to the rootscope.
.run([
'$http',