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Do not store all the manifests in memory

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This commit is contained in:
RMidhunSuresh 2022-07-18 14:55:13 +05:30
parent b29287c47e
commit dece42dce3
2 changed files with 16 additions and 15 deletions
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13
src/platform/web/ThemeBuilder.ts
View file

@ -15,29 +15,26 @@ limitations under the License.
*/
import type {ThemeInformation} from "./ThemeLoader";
import type {Platform} from "./Platform.js";
import type {ThemeManifest} from "../types/theme";
import {ColorSchemePreference} from "./ThemeLoader";
import {IconColorizer} from "./IconColorizer";
import {DerivedVariables} from "./DerivedVariables";
import {ThemeManifest} from "../types/theme";
import {ILogItem} from "../../logging/types";
export class ThemeBuilder {
private _idToManifest: Map<string, {manifest: ThemeManifest, location: string}>;
private _themeMapping: Record<string, ThemeInformation> = {};
private _preferredColorScheme?: ColorSchemePreference;
private _platform: Platform;
private _injectedVariables?: Record<string, string>;
constructor(platform: Platform, manifestMap: Map<string, any>, preferredColorScheme?: ColorSchemePreference) {
this._idToManifest = manifestMap;
constructor(platform: Platform, preferredColorScheme?: ColorSchemePreference) {
this._preferredColorScheme = preferredColorScheme;
this._platform = platform;
}
async populateDerivedTheme(manifest: ThemeManifest, log: ILogItem): Promise<void> {
async populateDerivedTheme(manifest: ThemeManifest, baseManifest: ThemeManifest, baseManifestLocation: string, log: ILogItem): Promise<void> {
await log.wrap("ThemeBuilder.populateThemeMap", async () => {
const {manifest: baseManifest, location} = this._idToManifest.get(manifest.extends!)!;
const {cssLocation, derivedVariables, icons} = this._getSourceData(baseManifest, location, log);
const {cssLocation, derivedVariables, icons} = this._getSourceData(baseManifest, baseManifestLocation, log);
const themeName = manifest.name;
if (!themeName) {
throw new Error(`Theme name not found in manifest!`);
@ -49,7 +46,7 @@ export class ThemeBuilder {
const { name: variantName, default: isDefault, dark, variables } = variantDetails;
const resolvedVariables = new DerivedVariables(variables, derivedVariables, dark).toVariables();
Object.assign(variables, resolvedVariables);
const iconVariables = await new IconColorizer(this._platform, icons, variables, location).toVariables();
const iconVariables = await new IconColorizer(this._platform, icons, variables, baseManifestLocation).toVariables();
Object.assign(variables, resolvedVariables, iconVariables);
const themeDisplayName = `${themeName} ${variantName}`;
if (isDefault) {

18
src/platform/web/ThemeLoader.ts
View file

@ -15,7 +15,7 @@ limitations under the License.
*/
import type {ILogItem} from "../../logging/types";
import { ThemeManifest } from "../types/theme";
import type {ThemeManifest} from "../types/theme";
import type {Platform} from "./Platform.js";
import {ThemeBuilder} from "./ThemeBuilder";
@ -52,20 +52,24 @@ export class ThemeLoader {
}
async init(manifestLocations: string[], log?: ILogItem): Promise<void> {
const idToManifest = new Map();
await this._platform.logger.wrapOrRun(log, "ThemeLoader.init", async (log) => {
this._themeMapping = {};
const results = await Promise.all(
manifestLocations.map( location => this._platform.request(location, { method: "GET", format: "json", cache: true, }).response())
manifestLocations.map(location => this._platform.request(location, { method: "GET", format: "json", cache: true, }).response())
);
results.forEach(({ body }, i) => idToManifest.set(body.id, { manifest: body, location: manifestLocations[i] }));
this._themeBuilder = new ThemeBuilder(this._platform, idToManifest, this.preferredColorScheme);
this._themeBuilder = new ThemeBuilder(this._platform, this.preferredColorScheme);
const runtimeThemePromises: Promise<void>[] = [];
for (let i = 0; i < results.length; ++i) {
const { body } = results[i];
try {
if (body.extends) {
const promise = this._themeBuilder.populateDerivedTheme(body, log);
const indexOfBaseManifest = results.findIndex(manifest => manifest.body.id === body.extends);
if (indexOfBaseManifest === -1) {
throw new Error(`Base manifest for derived theme at ${manifestLocations[i]} not found!`);
}
const {body: baseManifest} = results[indexOfBaseManifest];
const baseManifestLocation = manifestLocations[indexOfBaseManifest];
const promise = this._themeBuilder.populateDerivedTheme(body, baseManifest, baseManifestLocation, log);
runtimeThemePromises.push(promise);
}
else {
@ -97,7 +101,7 @@ export class ThemeLoader {
}
private _populateThemeMap(manifest: ThemeManifest, manifestLocation: string, log: ILogItem) {
log.wrap("populateThemeMap", () => {
log.wrap("ThemeLoader.populateThemeMap", () => {
/*
After build has finished, the source section of each theme manifest
contains `built-assets` which is a mapping from the theme-id to