mirror of
https://github.com/TryGhost/Ghost.git
synced 2024-12-25 03:44:29 +03:00
Removed usage of EventAwareCacheAdapter
This logic is so simple it isn't worth having the indirection of another class. This also removes the indirection of wrapped getters/setters, which is useful because otherwise we need to update the wrapper with new methods each time theunderlying implementation is changed. There was a note about losing the context of this, but I haven't found anywhere that the context is lost.
This commit is contained in:
Fabien "egg" O'Carroll
Fabien 'egg' O'Carroll
parent
c7d7b883cc
commit
c60dd779c9
@ -8,34 +8,18 @@ class PostsPublicServiceWrapper {
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// Wire up all the dependencies
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const adapterManager = require('../adapter-manager');
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const config = require('../../../shared/config');
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const EventAwareCacheWrapper = require('@tryghost/event-aware-cache-wrapper');
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const EventRegistry = require('../../lib/common/events');
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let postsCache;
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if (config.get('hostSettings:postsPublicCache:enabled')) {
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const cache = adapterManager.getAdapter('cache:postsPublic');
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postsCache = new EventAwareCacheWrapper({
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cache: cache,
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resetEvents: ['site.changed'],
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eventRegistry: EventRegistry
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postsCache = adapterManager.getAdapter('cache:postsPublic');
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EventRegistry.on('site.changed', () => {
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postsCache.reset();
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});
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}
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let cache;
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if (postsCache) {
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// @NOTE: exposing cache through getter and setter to not loose the context of "this"
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cache = {
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get() {
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return postsCache.get(...arguments);
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},
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set() {
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return postsCache.set(...arguments);
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}
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};
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}
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this.api = {
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cache: cache
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cache: postsCache
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};
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}
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}
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@ -8,33 +8,18 @@ class TagsPublicServiceWrapper {
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// Wire up all the dependencies
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const adapterManager = require('../adapter-manager');
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const config = require('../../../shared/config');
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const EventAwareCacheWrapper = require('@tryghost/event-aware-cache-wrapper');
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const EventRegistry = require('../../lib/common/events');
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let tagsCache;
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if (config.get('hostSettings:tagsPublicCache:enabled')) {
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let tagsPublicCache = adapterManager.getAdapter('cache:tagsPublic');
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tagsCache = new EventAwareCacheWrapper({
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cache: tagsPublicCache,
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resetEvents: ['site.changed'],
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eventRegistry: EventRegistry
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tagsCache = adapterManager.getAdapter('cache:tagsPublic');
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EventRegistry.on('site.changed', () => {
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tagsCache.reset();
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});
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}
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let cache;
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if (tagsCache) {
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// @NOTE: exposing cache through getter and setter to not loose the context of "this"
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cache = {
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get() {
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return tagsCache.get(...arguments);
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},
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set() {
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return tagsCache.set(...arguments);
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}
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};
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}
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this.api = {
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cache: cache
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cache: tagsCache
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};
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}
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}
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@ -87,7 +87,6 @@
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"@tryghost/email-service": "0.0.0",
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"@tryghost/email-suppression-list": "0.0.0",
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"@tryghost/errors": "1.2.26",
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"@tryghost/event-aware-cache-wrapper": "0.0.0",
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"@tryghost/express-dynamic-redirects": "0.0.0",
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"@tryghost/external-media-inliner": "0.0.0",
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"@tryghost/helpers": "1.1.88",
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@ -1,6 +0,0 @@
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module.exports = {
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plugins: ['ghost'],
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extends: [
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'plugin:ghost/node'
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]
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};
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@ -1,23 +0,0 @@
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# Event Aware Cache Wrapper
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Cache wrapper allowing to reset the cache after certain events
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## Usage
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## Develop
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This is a monorepo package.
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Follow the instructions for the top-level repo.
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1. `git clone` this repo & `cd` into it as usual
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2. Run `yarn` to install top-level dependencies.
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## Test
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- `yarn lint` run just eslint
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- `yarn test` run lint and tests
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@ -1 +0,0 @@
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module.exports = require('./lib/EventAwareCacheWrapper');
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@ -1,38 +0,0 @@
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class EventAwareCacheWrapper {
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#cache;
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/**
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* @param {Object} deps
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* @param {Object} deps.cache - cache instance extending adapter-base-cache
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* @param {Object} [deps.eventRegistry] - event registry instance
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* @param {String[]} [deps.resetEvents] - event to listen to triggering reset
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*/
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constructor(deps) {
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this.#cache = deps.cache;
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if (deps.resetEvents && deps.eventRegistry) {
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this.#initListeners(deps.eventRegistry, deps.resetEvents);
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}
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}
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#initListeners(eventRegistry, eventsToResetOn) {
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eventsToResetOn.forEach((event) => {
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eventRegistry.on(event, () => {
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this.reset();
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});
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});
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}
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async get(key) {
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return this.#cache.get(key);
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}
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async set(key, value) {
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return this.#cache.set(key, value);
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}
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reset() {
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return this.#cache.reset();
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}
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}
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module.exports = EventAwareCacheWrapper;
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@ -1,27 +0,0 @@
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{
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"name": "@tryghost/event-aware-cache-wrapper",
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"version": "0.0.0",
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"repository": "https://github.com/TryGhost/Ghost/tree/main/packages/event-aware-cache-wrapper",
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"author": "Ghost Foundation",
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"private": true,
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"main": "index.js",
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"scripts": {
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"dev": "echo \"Implement me!\"",
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"test:unit": "NODE_ENV=testing c8 --all --check-coverage --100 --reporter text --reporter cobertura -- mocha --reporter dot './test/**/*.test.js'",
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"test": "yarn test:unit",
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"lint:code": "eslint *.js lib/ --ext .js --cache",
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"lint": "yarn lint:code && yarn lint:test",
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"lint:test": "eslint -c test/.eslintrc.js test/ --ext .js --cache"
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},
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"files": [
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"index.js",
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"lib"
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],
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"devDependencies": {
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"@tryghost/adapter-cache-memory-ttl": "0.0.0",
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"c8": "8.0.1",
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"mocha": "10.2.0",
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"sinon": "15.2.0"
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},
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"dependencies": {}
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}
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@ -1,6 +0,0 @@
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module.exports = {
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plugins: ['ghost'],
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extends: [
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'plugin:ghost/test'
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]
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};
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@ -1,48 +0,0 @@
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const assert = require('assert/strict');
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const InMemoryCache = require('@tryghost/adapter-cache-memory-ttl');
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const EventAwareCacheWrapper = require('../index');
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const {EventEmitter} = require('stream');
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describe('EventAwareCacheWrapper', function () {
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it('Can initialize', function () {
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const cache = new InMemoryCache();
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const wrappedCache = new EventAwareCacheWrapper({
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cache
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});
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assert.ok(wrappedCache);
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});
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describe('get', function () {
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it('calls a wrapped cache with extra key', async function () {
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const cache = new InMemoryCache();
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const wrapper = new EventAwareCacheWrapper({
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cache: cache
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});
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await wrapper.set('a', 'b');
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assert.equal(await wrapper.get('a'), 'b');
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assert.equal(await cache.get('a'), 'b');
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});
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});
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describe('listens to reset events', function () {
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it('resets the cache when reset event is triggered', async function () {
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const cache = new InMemoryCache();
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const eventRegistry = new EventEmitter();
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const wrapper = new EventAwareCacheWrapper({
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cache: cache,
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resetEvents: ['site.changed'],
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eventRegistry: eventRegistry
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});
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await wrapper.set('a', 'b');
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assert.equal(await wrapper.get('a'), 'b');
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eventRegistry.emit('site.changed');
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assert.equal(await wrapper.get('a'), undefined);
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});
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});
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});
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