Add support for offline db migration

src/data/recorder.ts

@@ -2,6 +2,15 @@ import { computeStateName } from "../common/entity/compute_state_name";
 import { HaDurationData } from "../components/ha-duration-input";
 import { HomeAssistant } from "../types";
 
+export interface RecorderInfo {
+  backlog: number | null;
+  max_backlog: number;
+  migration_in_progress: boolean;
+  migration_is_live: boolean;
+  recording: boolean;
+  thread_running: boolean;
+}
+
 export type StatisticType = "change" | "state" | "sum" | "min" | "max" | "mean";
 
 export interface Statistics {
@@ -106,6 +115,11 @@ export interface StatisticsValidationResults {
   [statisticId: string]: StatisticsValidationResult[];
 }
 
+export const getRecorderInfo = (hass: HomeAssistant) =>
+  hass.callWS<RecorderInfo>({
+    type: "recorder/info",
+  });
+
 export const getStatisticIds = (
   hass: HomeAssistant,
   statistic_type?: "mean" | "sum"

src/layouts/ha-init-page.ts

@@ -4,11 +4,13 @@ import { property, state } from "lit/decorators";
 class HaInitPage extends LitElement {
   @property({ type: Boolean }) public error = false;
 
+  @property({ type: Boolean }) public migration = false;
+
   @state() private _retryInSeconds = 60;
 
-  private _showProgressIndicatorTimeout?: NodeJS.Timeout;
+  private _showProgressIndicatorTimeout?: number;
 
-  private _retryInterval?: NodeJS.Timeout;
+  private _retryInterval?: number;
 
   protected render() {
     return this.error
@@ -35,7 +37,11 @@ class HaInitPage extends LitElement {
           <div id="progress-indicator-wrapper">
             <ha-circular-progress active></ha-circular-progress>
           </div>
-          <div id="loading-text">Loading data</div>
+          <div id="loading-text">
+            ${this.migration
+              ? "Database migration in progress, please wait this might take some time"
+              : "Loading data"}
+          </div>
         `;
   }
 
@@ -56,11 +62,11 @@ class HaInitPage extends LitElement {
   }
 
   protected firstUpdated() {
-    this._showProgressIndicatorTimeout = setTimeout(() => {
+    this._showProgressIndicatorTimeout = window.setTimeout(() => {
       import("../components/ha-circular-progress");
     }, 5000);
 
-    this._retryInterval = setInterval(() => {
+    this._retryInterval = window.setInterval(() => {
       const remainingSeconds = this._retryInSeconds--;
       if (remainingSeconds <= 0) {
         this._retry();
@@ -96,6 +102,7 @@ class HaInitPage extends LitElement {
       #loading-text {
         max-width: 350px;
         color: var(--primary-text-color);
+        text-align: center;
       }
     `;
   }

src/layouts/home-assistant.ts

@@ -3,6 +3,7 @@ import { customElement, state } from "lit/decorators";
 import { isNavigationClick } from "../common/dom/is-navigation-click";
 import { navigate } from "../common/navigate";
 import { getStorageDefaultPanelUrlPath } from "../data/panel";
+import { getRecorderInfo } from "../data/recorder";
 import "../resources/custom-card-support";
 import { HassElement } from "../state/hass-element";
 import QuickBarMixin from "../state/quick-bar-mixin";
@@ -32,6 +33,8 @@ const panelUrl = (path: string) => {
 export class HomeAssistantAppEl extends QuickBarMixin(HassElement) {
   @state() private _route: Route;
 
+  @state() private _databaseMigration?: boolean;
+
   private _panelUrl: string;
 
   private _haVersion?: string;
@@ -65,8 +68,24 @@ export class HomeAssistantAppEl extends QuickBarMixin(HassElement) {
     `;
   }
 
+  willUpdate(changedProps: PropertyValues<this>) {
+    if (
+      this._databaseMigration === undefined &&
+      changedProps.has("hass") &&
+      this.hass?.config &&
+      changedProps.get("hass")?.config !== this.hass?.config
+    ) {
+      this.checkDataBaseMigration();
+    }
+  }
+
   update(changedProps: PropertyValues<this>) {
-    if (this.hass?.states && this.hass.config && this.hass.services) {
+    if (
+      this.hass?.states &&
+      this.hass.config &&
+      this.hass.services &&
+      this._databaseMigration === false
+    ) {
       this.render = this.renderHass;
       this.update = super.update;
       removeLaunchScreen();
@@ -131,6 +150,14 @@ export class HomeAssistantAppEl extends QuickBarMixin(HassElement) {
         changedProps.get("hass") as HomeAssistant | undefined
       );
     }
+    if (changedProps.has("_databaseMigration")) {
+      if (this.render !== this.renderHass) {
+        this._renderInitInfo(false);
+      } else if (this._databaseMigration) {
+        // we already removed the launch screen, so we refresh to add it again to show the migration screen
+        location.reload();
+      }
+    }
   }
 
   protected hassConnected() {
@@ -174,6 +201,20 @@ export class HomeAssistantAppEl extends QuickBarMixin(HassElement) {
     }
   }
 
+  protected async checkDataBaseMigration() {
+    if (this.hass?.config?.components.includes("recorder")) {
+      const info = await getRecorderInfo(this.hass);
+      this._databaseMigration =
+        info.migration_in_progress && !info.migration_is_live;
+      if (this._databaseMigration) {
+        // check every 5 seconds if the migration is done
+        setTimeout(() => this.checkDataBaseMigration(), 5000);
+      }
+    } else {
+      this._databaseMigration = false;
+    }
+  }
+
   protected async _initializeHass() {
     try {
       let result;
@@ -250,7 +291,10 @@ export class HomeAssistantAppEl extends QuickBarMixin(HassElement) {
 
   private _renderInitInfo(error: boolean) {
     renderLaunchScreenInfoBox(
-      html`<ha-init-page .error=${error}></ha-init-page>`
+      html`<ha-init-page
+        .error=${error}
+        .migration=${this._databaseMigration}
+      ></ha-init-page>`
     );
   }
 }

src/state/connection-mixin.ts

@@ -249,6 +249,7 @@ export const connectionMixin = <T extends Constructor<HassBaseEl>>(
       // @ts-ignore
       this.hass!.callWS({ type: "get_config" }).then((config: HassConfig) => {
         this._updateHass({ config });
+        this.checkDataBaseMigration();
       });
     }
 

src/state/hass-base-mixin.ts

@@ -38,6 +38,10 @@ export class HassBaseEl extends LitElement {
     // eslint-disable-next-line
   }
 
+  protected checkDataBaseMigration() {
+    // eslint-disable-next-line
+  }
+
   protected hassChanged(hass, _oldHass) {
     this.__provideHass.forEach((el) => {
       (el as any).hass = hass;