Merge pull request #2870 from jryans/degraded-storage

Track store failures after startup

src/MatrixClientPeg.js

@@ -31,6 +31,7 @@ import {phasedRollOutExpiredForUser} from "./PhasedRollOut";
 import Modal from './Modal';
 import {verificationMethods} from 'matrix-js-sdk/lib/crypto';
 import MatrixClientBackedSettingsHandler from "./settings/handlers/MatrixClientBackedSettingsHandler";
+import * as StorageManager from './utils/StorageManager';
 
 interface MatrixClientCreds {
     homeserverUrl: string,
@@ -113,6 +114,8 @@ class MatrixClientPeg {
             }
         }
 
+        StorageManager.trackStores(this.matrixClient);
+
         // try to initialise e2e on the new client
         try {
             // check that we have a version of the js-sdk which includes initCrypto

src/utils/StorageManager.js

@@ -147,3 +147,11 @@ async function checkCryptoStore() {
     log("Crypto store using memory only");
     return { exists, healthy: false };
 }
+
+export function trackStores(client) {
+    if (client.store && client.store.on) {
+        client.store.on("degraded", () => {
+            track("Sync store using IndexedDB degraded to memory");
+        });
+    }
+}