[IMPROVEMENT] Change server while connecting/updating

app/lib/rocketchat.js

@@ -47,6 +47,7 @@ import { getDeviceToken } from '../notifications/push';
 import { setActiveUsers } from '../actions/activeUsers';
 import I18n from '../i18n';
 import { twoFactor } from '../utils/twoFactor';
+import { selectServerFailure } from '../actions/server';
 import { useSsl } from '../utils/url';
 
 const TOKEN_KEY = 'reactnativemeteor_usertoken';
@@ -142,6 +143,10 @@ const RocketChat = {
 			}
 			return result;
 		} catch (e) {
+			if (e.message === 'Aborted') {
+				reduxStore.dispatch(selectServerFailure());
+				throw e;
+			}
 			log(e);
 		}
 		return {
@@ -155,6 +160,16 @@ const RocketChat = {
 	stopListener(listener) {
 		return listener && listener.stop();
 	},
+	// Abort all requests and create a new AbortController
+	abort() {
+		if (this.controller) {
+			this.controller.abort();
+			if (this.sdk) {
+				this.sdk.abort();
+			}
+		}
+		this.controller = new AbortController();
+	},
 	connect({ server, user, logoutOnError = false }) {
 		return new Promise((resolve) => {
 			if (!this.sdk || this.sdk.client.host !== server) {
@@ -201,17 +216,21 @@ const RocketChat = {
 
 			const sdkConnect = () => this.sdk.connect()
 				.then(() => {
-					if (user && user.token) {
+					const { server: currentServer } = reduxStore.getState().server;
+					if (user && user.token && server === currentServer) {
 						reduxStore.dispatch(loginRequest({ resume: user.token }, logoutOnError));
 					}
 				})
 				.catch((err) => {
 					console.log('connect error', err);
 
-					// when `connect` raises an error, we try again in 10 seconds
-					this.connectTimeout = setTimeout(() => {
-						sdkConnect();
-					}, 10000);
+					const { server: currentServer } = reduxStore.getState().server;
+					if (server === currentServer) {
+						// when `connect` raises an error, we try again in 10 seconds
+						this.connectTimeout = setTimeout(() => {
+							sdkConnect();
+						}, 10000);
+					}
 				});
 
 			sdkConnect();

app/sagas/selectServer.js

@@ -1,6 +1,4 @@
-import {
-	put, take, takeLatest, fork, cancel, race
-} from 'redux-saga/effects';
+import { put, takeLatest } from 'redux-saga/effects';
 import { Alert } from 'react-native';
 import RNUserDefaults from 'rn-user-defaults';
 import { sanitizedRaw } from '@nozbe/watermelondb/RawRecord';
@@ -98,6 +96,9 @@ const handleSelectServer = function* handleSelectServer({ server, version, fetch
 		const basicAuth = yield RNUserDefaults.get(`${ BASIC_AUTH_KEY }-${ server }`);
 		setBasicAuth(basicAuth);
 
+		// Check for running requests and abort them before connecting to the server
+		RocketChat.abort();
+
 		if (user) {
 			yield put(clearSettings());
 			yield RocketChat.connect({ server, user, logoutOnError: true });
@@ -152,16 +153,6 @@ const handleServerRequest = function* handleServerRequest({ server, certificate
 
 const root = function* root() {
 	yield takeLatest(SERVER.REQUEST, handleServerRequest);
-
-	while (true) {
-		const params = yield take(SERVER.SELECT_REQUEST);
-		const selectServerTask = yield fork(handleSelectServer, params);
-		yield race({
-			request: take(SERVER.SELECT_REQUEST),
-			success: take(SERVER.SELECT_SUCCESS),
-			failure: take(SERVER.SELECT_FAILURE)
-		});
-		yield cancel(selectServerTask);
-	}
+	yield takeLatest(SERVER.SELECT_REQUEST, handleSelectServer);
 };
 export default root;

app/utils/fetch.js

@@ -1,6 +1,7 @@
 import { Platform } from 'react-native';
 import DeviceInfo from 'react-native-device-info';
 import { settings as RocketChatSettings } from '@rocket.chat/sdk';
+import RocketChat from '../lib/rocketchat';
 
 // this form is required by Rocket.Chat's parser in "app/statistics/server/lib/UAParserCustom.js"
 export const headers = {
@@ -25,5 +26,9 @@ export default (url, options = {}) => {
 	if (options && options.headers) {
 		customOptions = { ...customOptions, headers: { ...options.headers, ...customOptions.headers } };
 	}
+	if (RocketChat.controller) {
+		const { signal } = RocketChat.controller;
+		customOptions = { ...customOptions, signal };
+	}
 	return fetch(url, customOptions);
 };

app/views/RoomsListView/Header/Header.ios.js

@@ -56,7 +56,7 @@ const Header = React.memo(({
 			onPress={onPress}
 			testID='rooms-list-header-server-dropdown-button'
 			style={styles.container}
-			disabled={connecting || isFetching}
+			// disabled={connecting || isFetching}
 		>
 			<HeaderTitle connecting={connecting} isFetching={isFetching} theme={theme} />
 			<View style={styles.button}>

package.json

@@ -85,7 +85,7 @@
     "react-native-responsive-ui": "^1.1.1",
     "react-native-screens": "^2.0.0-alpha.3",
     "react-native-scrollable-tab-view": "^1.0.0",
-    "react-native-slowlog": "^1.0.2",
+    "react-native-slowlog": "1.0.2",
     "react-native-unimodules": "0.5.3",
     "react-native-vector-icons": "6.6.0",
     "react-native-webview": "7.5.1",

patches/@rocket.chat+sdk+1.0.0-dj.15.patch

@@ -0,0 +1,83 @@
+diff --git a/node_modules/@rocket.chat/sdk/lib/api/api.ts b/node_modules/@rocket.chat/sdk/lib/api/api.ts
+index 17c2c2b..cb094e8 100644
+--- a/node_modules/@rocket.chat/sdk/lib/api/api.ts
++++ b/node_modules/@rocket.chat/sdk/lib/api/api.ts
+@@ -117,24 +117,31 @@ class Client implements IClient {
+       JSON.stringify(data)
+   }
+
++  getSignal (options?: any): AbortSignal {
++    return options && options.signal;
++  }
++
+   get (url: string, data: any, options?: any): Promise<any> {
+     return fetch(`${this.host}/api/v1/${encodeURI(url)}?${this.getParams(data)}`, {
+       method: 'GET',
+-      headers: this.getHeaders(options)
++      headers: this.getHeaders(options),
++      signal: this.getSignal(options)
+     }).then(this.handle)
+   }
+   post (url: string, data: any, options?: any): Promise<any> {
+     return fetch(`${this.host}/api/v1/${encodeURI(url)}`, {
+       method: 'POST',
+       body: this.getBody(data),
+-      headers: this.getHeaders(options)
++      headers: this.getHeaders(options),
++      signal: this.getSignal(options)
+     }).then(this.handle)
+   }
+   put (url: string, data: any, options?: any): Promise<any> {
+     return fetch(`${this.host}/api/v1/${encodeURI(url)}`, {
+       method: 'PUT',
+       body: this.getBody(data),
+-      headers: this.getHeaders(options)
++      headers: this.getHeaders(options),
++      signal: this.getSignal(options)
+     }).then(this.handle)
+   }
+
+@@ -142,7 +149,8 @@ class Client implements IClient {
+     return fetch(`${this.host}/api/v1/${encodeURI(url)}`, {
+       method: 'DELETE',
+       body: this.getBody(data),
+-      headers: this.getHeaders(options)
++      headers: this.getHeaders(options),
++      signal: this.getSignal(options)
+     }).then(this.handle)
+   }
+   private async handle (r: any) {
+@@ -176,11 +184,13 @@ export default class Api extends EventEmitter {
+     authToken: string,
+     result: ILoginResultAPI
+   } | null = null
++  controller: AbortController
+
+   constructor ({ client, host, logger = Logger }: any) {
+     super()
+     this.client = client || new Client({ host } as any)
+     this.logger = Logger
++    this.controller = new AbortController();
+   }
+
+   get username () {
+@@ -212,6 +222,10 @@ export default class Api extends EventEmitter {
+       if (auth && !this.loggedIn()) {
+         throw new Error('')
+       }
++
++      const { signal } = this.controller;
++      options = { ...options, signal };
++
+       let result
+       switch (method) {
+         case 'GET': result = await this.client.get(endpoint, data, options); break
+@@ -242,6 +256,8 @@ export default class Api extends EventEmitter {
+ 	/** Do a DELETE request to an API endpoint. */
+   del: IAPIRequest = (endpoint, data, auth, ignore, options = {}) => this.request('DELETE', endpoint, data, auth, ignore, options)
+
++  abort = (): void => this.controller.abort()
++
+ 	/** Check result data for success, allowing override to ignore some errors */
+   success (result: any, ignore?: RegExp) {
+     return (

yarn.lock

@@ -10072,7 +10072,7 @@ react-native-scrollable-tab-view@^1.0.0:
     prop-types "^15.6.0"
     react-timer-mixin "^0.13.3"
 
-react-native-slowlog@^1.0.2:
+[email protected]:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/react-native-slowlog/-/react-native-slowlog-1.0.2.tgz#5520979e3ef9d5273495d431ff3be34f02e35c89"
   integrity sha1-VSCXnj751Sc0ldQx/zvjTwLjXIk=