Cache expiration bug fixes and improved factory usage.

Author: chrisdenman

README.md

@@ -1,4 +1,4 @@
-# [ID Bot](https://github.com/chrisdenman/id-bot) 0.0.3
+# [ID Bot](https://github.com/chrisdenman/id-bot) 0.0.4
                                                                 
 ![An stylised image of the project's logo formed of a lower-case i cursively joining a capitalised D](res/img/id-gum-logo.png)
 

VERSIONS.md

@@ -5,3 +5,5 @@
 0.0.2 - `Functionality added to require the identification of emoji and custom (Discord) emoji.`
 
 0.0.3 - `Cache expiration management.`
+
+0.0.4 - `Cache expiration bug fixes and improved factory usage.`

package-lock.json

@@ -1,6 +1,6 @@
 {
   "name": "@ceilingcat/id-bot",
-  "version": "0.0.3",
+  "version": "0.0.4",
   "description": "A discord bot to remind users to tag uploaded images with identifiers.",
   "scripts": {
     "lint": "eslint \"src/*/*.js\"",

package.json

@@ -51,7 +51,7 @@ describe("Tests for our Cache", () => {
     });
 
     it("Newly added cache entries have a 'createdAt' value greater or equal than that sampled before population.", () => {
-        const then = factory.utcTimeStampNow;
+        const then = factory.getNowInMilliSeconds;
 
         const meta = setK0V0().getMeta(k0);
 
@@ -64,7 +64,7 @@ describe("Tests for our Cache", () => {
 
         expect(metaBefore.lastAccessedAt).toEqual(metaBefore.createdAt);
 
-        const then = factory.utcTimeStampNow;
+        const then = factory.getNowInMilliSeconds;
         cache.get(k0);
         const metaAfter = cache.getMeta(k0);
 
@@ -78,7 +78,7 @@ describe("Tests for our Cache", () => {
 
         expect(metaBefore.lastUpdatedAt).toBeUndefined();
 
-        const then = factory.utcTimeStampNow;
+        const then = factory.getNowInMilliSeconds;
         cache.set(k0, newValue);
         const metaAfter = cache.getMeta(k0);
 

src/__tests__/cache.spec.js

@@ -63,14 +63,12 @@ class CacheMaxStaleManager {
     }
 
     #expireStaleCacheEntries() {
-        const NOW = this.#factory.utcTimeStampNow;
-
+        const NOW = this.#factory.getNowInMilliSeconds;
         [...this.#cache.metaData]
-            .filter(it => it.lastAccessedAt + this.#maxStaleLifetimeMilliSeconds > NOW)
-            .map(it => it.key)
+            .filter(it => NOW - it.lastAccessedAt > this.#maxStaleLifetimeMilliSeconds)
             .map(it => {
-                this.#cache.remove(it);
-                this.#logger.debug(`Expired key @ ${NOW}`);
+                this.#cache.remove(it.key);
+                this.#logger.debug(`Expired key ${it.key}`);
             });
     }
 

src/js/cache-max-stale-manager.js

@@ -45,7 +45,7 @@ class Cache {
             const value = this.#keyToValue.get(key);
 
             this.#keyToMetaData.set(key, this.#factory.withCacheAccess(this.#keyToMetaData.get(key)));
-            this.#logger.debug(`<[${key}]`);
+            this.#logger.debug(`<[${key}=${value}]`);
 
             return value;
         } else {

src/js/cache.js

@@ -98,25 +98,22 @@ class DiscordInterface {
     /**
      * @param {IdBotMessage} received
      * @param {string} content
+     * @return Promise<Message>
      */
-    replyTo(received, content) {
+    async replyTo(received, content) {
         this._logger.debug(`sending reply to ${received.id} with "${content}"`);
-        received.reply(content);
-    }
-
-    update = (message, content) => message
-        .edit(content)
-        .then(updatedMessage => this._logger.log(`Updated ${message.id} to "${updatedMessage.content}"`))
-        .catch(e => this._logger.error(`could not delete reply with id=${message.id}`, e));
 
+        return received.discordJsMessage.reply(content);
+    }
 
     /**
      * @param {Channel} channel
      * @param messageId
      */
     deleteMessage(channel, messageId) {
         this._logger.debug(`attempting to delete replies to message with id=${messageId}`);
-        channel
+
+        return channel
             .messages
             .delete(messageId)
             .then(() => this._logger.debug(`deleted reply with id=${messageId}`))

src/js/discord-interface.js

@@ -9,6 +9,8 @@ import {GatewayIntentBits} from "discord-api-types/v10";
 import {DiscordInterface} from "./discord-interface.js";
 import {Application} from "./application.js";
 import {CacheMaxStaleManager} from "./cache-max-stale-manager.js";
+import {numberOfEmojiContained} from "./emoji.js";
+import {isImageMediaType} from "./media-type.js";
 
 const CLIENT_OPTIONS = {
     intents: [
@@ -20,6 +22,16 @@ const CLIENT_OPTIONS = {
 
 class Factory {
 
+    /**
+     * @type RegExp
+     */
+    #MESSAGE_ID_REGEXP = /(?<=(^|\s|\W)ID:\s*)(\w+)(?!\WID:)/svg;
+
+    /**
+     * @type RegExp
+     */
+    #CUSTOM_EMOJI_REGEX = /<(a)?:(?<name>\w+):(?<id>\d+)>/g;
+
     static get #CLIENT_OPTIONS() {
         return CLIENT_OPTIONS;
     }
@@ -33,7 +45,8 @@ class Factory {
      */
     createCacheExpirator(cache, tickIntervalDurationMilliSeconds = 100, maxStaleLifetimeMilliSeconds = undefined) {
         return new CacheMaxStaleManager(
-            cache, this.createLogger("MaxStaleCacheManager"),
+            cache,
+            this.createLogger("MaxStaleCacheManager"),
             this,
             tickIntervalDurationMilliSeconds,
             maxStaleLifetimeMilliSeconds
@@ -96,16 +109,37 @@ class Factory {
      *
      * @returns {number}
      */
-    get utcTimeStampNow() {
-        return new Date().getUTCMilliseconds();
+    get getNowInMilliSeconds() {
+        return Date.now();
     }
 
     /**
      *
      * @param discordJsMessage
      * @returns {IdBotMessage}
      */
-    createIdBotMessage = discordJsMessage => new IdBotMessage(this, discordJsMessage);
+    createIdBotMessage = discordJsMessage => {
+        const content = discordJsMessage.content;
+
+        const contentCustomEmojiMatches = [...content.matchAll(this.#CUSTOM_EMOJI_REGEX)];
+
+        const contentStrippedOfCustomEmoji = content.replaceAll(this.#CUSTOM_EMOJI_REGEX, "");
+        const numberOfEmoji = numberOfEmojiContained(contentStrippedOfCustomEmoji);
+
+        const idMatches = [...content.matchAll(this.#MESSAGE_ID_REGEXP)];
+
+        const imageIdStats = this.createImageIdStats(
+            [...discordJsMessage.attachments.values()]
+                .map(v => v.contentType)
+                .filter(isImageMediaType)
+                .length,
+            numberOfEmoji,
+            contentCustomEmojiMatches.length,
+            idMatches.length
+        );
+
+        return new IdBotMessage(imageIdStats, discordJsMessage);
+    };
 
     /**
      * @param {string} [prefix]
@@ -119,23 +153,23 @@ class Factory {
      * @returns {CacheMeta}
      */
     createCacheMeta = key => {
-        const now = this.utcTimeStampNow;
-        
+        const now = this.getNowInMilliSeconds;
+
         return new CacheMeta(key, now, now);
     };
-    
+
     withCacheAccess = cacheMeta => new CacheMeta(
         cacheMeta.key,
         cacheMeta.createdAt,
-        this.utcTimeStampNow,
+        this.getNowInMilliSeconds,
         cacheMeta.lastUpdatedAt
     );
 
     withUpdate = cacheMeta => new CacheMeta(
         cacheMeta.key,
         cacheMeta.createdAt,
         cacheMeta.lastAccessedAt,
-        this.utcTimeStampNow
+        this.getNowInMilliSeconds
     );
 
     /**

src/js/factory.js

@@ -1,6 +1,3 @@
-import {isImageMediaType} from "./media-type.js";
-import {numberOfEmojiContained} from "./emoji.js";
-
 /**
  * @typedef {typeof import('./image-id-stats.js')['ImageIdStats']} ImageIdStats
  * @typedef {typeof import('discord.js')['Snowflake']} Snowflake
@@ -17,21 +14,16 @@ class IdBotMessage {
      */
     #imageIdStats;
 
-    /**
-     * @type RegExp
-     */
-    #MESSAGE_ID_REGEXP = /(?<=(^|\s|\W)ID:\s*)(\w+)(?!\WID:)/svg;
-
-    /**
-     * @type RegExp
-     */
-    #CUSTOM_EMOJI_REGEX = /<(a)?:(?<name>\w+):(?<id>\d+)>/g;
 
     /**
      * @type Message
      */
     #discordJsMessage;
 
+    get discordJsMessage() {
+        return this.#discordJsMessage;
+    }
+
     get id() {
         return this.#discordJsMessage.id;
     }
@@ -49,12 +41,6 @@ class IdBotMessage {
         return this.#discordJsMessage.content;
     }
 
-    /**
-     * @param {string} content
-     */
-    reply(content) {
-        return this.#discordJsMessage.reply(content);
-    }
 
     /**
      * @param {Snowflake} authorId
@@ -107,29 +93,12 @@ class IdBotMessage {
     }
 
     /**
-     * @param {Factory} factory
+     * @param {ImageIdStats} imageIdStats
      * @param {Message} discordJsMessage the discord.js sourced discordJsMessage
      */
-    constructor(factory, discordJsMessage) {
+    constructor(imageIdStats, discordJsMessage) {
         this.#discordJsMessage = discordJsMessage;
-
-        const content = discordJsMessage.content;
-        const contentCustomEmojiMatches = [...content.matchAll(this.#CUSTOM_EMOJI_REGEX)];
-
-        const contentStrippedOfCustomEmoji = content.replaceAll(this.#CUSTOM_EMOJI_REGEX, "");
-        const numberOfEmoji = numberOfEmojiContained(contentStrippedOfCustomEmoji);
-
-        const idMatches = [...content.matchAll(this.#MESSAGE_ID_REGEXP)];
-
-        this.#imageIdStats = factory.createImageIdStats(
-            [...discordJsMessage.attachments.values()]
-                .map(v => v.contentType)
-                .filter(isImageMediaType)
-                .length,
-            numberOfEmoji,
-            contentCustomEmojiMatches.length,
-            idMatches.length
-        );
+        this.#imageIdStats = imageIdStats;
     }
 }