Add reset option for corrupted event index store

src/components/views/dialogs/SeshatResetDialog.js

@@ -0,0 +1,55 @@
+/*
+Copyright 2020 The Matrix.org Foundation C.I.C.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+import React from 'react';
+import PropTypes from 'prop-types';
+import {_t} from "../../../languageHandler";
+import * as sdk from "../../../index";
+import {replaceableComponent} from "../../../utils/replaceableComponent";
+
+@replaceableComponent("views.dialogs.SeshatResetDialog")
+export default class SeshatResetDialog extends React.Component {
+    static propTypes = {
+        onFinished: PropTypes.func.isRequired,
+    };
+    render() {
+        const BaseDialog = sdk.getComponent('views.dialogs.BaseDialog');
+        const DialogButtons = sdk.getComponent('views.elements.DialogButtons');
+
+        return (
+            <BaseDialog
+                    hasCancel={true}
+                    onFinished={this.props.onFinished.bind(null, false)}
+                    title={_t("Reset event index store?")}>
+                <div>
+                    <p>
+                        {_t(
+                            "Your event store appears corrupted. " +
+                            "This action will restart this application.",
+                        )}
+                    </p>
+                </div>
+                <DialogButtons
+                    primaryButton={_t("Reset event store")}
+                    onPrimaryButtonClick={this.props.onFinished.bind(null, true)}
+                    primaryButtonClass="danger"
+                    cancelButton={_t("Cancel")}
+                    onCancel={this.props.onFinished.bind(null, false)}
+                />
+            </BaseDialog>
+        );
+    }
+}

src/components/views/settings/EventIndexPanel.js

@@ -26,6 +26,7 @@ import {formatBytes, formatCountLong} from "../../../utils/FormattingUtils";
 import EventIndexPeg from "../../../indexing/EventIndexPeg";
 import {SettingLevel} from "../../../settings/SettingLevel";
 import {replaceableComponent} from "../../../utils/replaceableComponent";
+import SeshatResetDialog from '../dialogs/SeshatResetDialog';
 
 @replaceableComponent("views.settings.EventIndexPanel")
 export default class EventIndexPanel extends React.Component {
@@ -122,6 +123,16 @@ export default class EventIndexPanel extends React.Component {
         await this.updateState();
     }
 
+    _confirmEventStoreReset() {
+        Modal.createDialog(SeshatResetDialog, {
+            onFinished: (success) => {
+                if (success) {
+                    EventIndexPeg.resetEventStore();
+                }
+            },
+        });
+    }
+
     render() {
         let eventIndexingSettings = null;
         const InlineSpinner = sdk.getComponent('elements.InlineSpinner');
@@ -220,6 +231,11 @@ export default class EventIndexPanel extends React.Component {
                         <code>
                             {EventIndexPeg.error.message}
                         </code>
+                        <p>
+                            <AccessibleButton key="delete" kind="danger" onClick={this._confirmEventStoreReset}>
+                                {_t("Reset")}
+                            </AccessibleButton>
+                        </p>
                     </details>
                     )}
 

src/i18n/strings/en_EN.json

@@ -2300,6 +2300,9 @@
     "Use your preferred Matrix homeserver if you have one, or host your own.": "Use your preferred Matrix homeserver if you have one, or host your own.",
     "Learn more": "Learn more",
     "About homeservers": "About homeservers",
+    "Reset event index store?": "Reset event index store?",
+    "Your event store appears corrupted. This action will restart this application.": "Your event store appears corrupted. This action will restart this application.",
+    "Reset event store": "Reset event store",
     "Sign out and remove encryption keys?": "Sign out and remove encryption keys?",
     "Clear Storage and Sign Out": "Clear Storage and Sign Out",
     "Send Logs": "Send Logs",

src/indexing/BaseEventIndexManager.ts

@@ -309,4 +309,14 @@ export default abstract class BaseEventIndexManager {
     async deleteEventIndex(): Promise<void> {
         throw new Error("Unimplemented");
     }
+
+    /**
+     * Reset a potentially corrupted event store
+     *
+     * @return {Promise} A promise that will resolve once the event store has
+     * been deleted.
+     */
+    async resetEventStore(): Promise<void> {
+        throw new Error("Unimplemented");
+    }
 }

src/indexing/EventIndexPeg.js

@@ -179,6 +179,11 @@ class EventIndexPeg {
             await indexManager.deleteEventIndex();
         }
     }
+
+    resetEventStore() {
+        const indexManager = PlatformPeg.get().getEventIndexingManager();
+        return indexManager.resetEventStore();
+    }
 }
 
 if (!global.mxEventIndexPeg) {