420 lines
14 KiB
JavaScript
420 lines
14 KiB
JavaScript
const { GET_BODYSHOP_BY_ID } = require("../graphql-client/queries");
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const devDebugLogger = require("./devDebugLogger");
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const client = require("../graphql-client/graphql-client").client;
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const BODYSHOP_CACHE_TTL = 3600; // 1 hour
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/**
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* Generate a cache key for a bodyshop
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* @param bodyshopId
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* @returns {`bodyshop-cache:${string}`}
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*/
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const getBodyshopCacheKey = (bodyshopId) => `bodyshop-cache:${bodyshopId}`;
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/**
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* Generate a cache key for a user socket mapping
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* @param email
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* @returns {`user:${string}:${string}:socketMapping`}
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*/
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const getUserSocketMappingKey = (email) =>
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`user:${process.env?.NODE_ENV === "production" ? "prod" : "dev"}:${email}:socketMapping`;
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/**
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* Fetch bodyshop data from the database
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* @param bodyshopId
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* @param logger
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* @returns {Promise<*>}
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*/
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const fetchBodyshopFromDB = async (bodyshopId, logger) => {
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try {
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const response = await client.request(GET_BODYSHOP_BY_ID, { id: bodyshopId });
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const bodyshop = response.bodyshops_by_pk;
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if (!bodyshop) {
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throw new Error(`Bodyshop with ID ${bodyshopId} not found`);
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}
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return bodyshop; // Return the full object as-is
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} catch (error) {
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logger.log("fetch-bodyshop-from-db", "ERROR", "redis", null, {
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bodyshopId,
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error: error?.message,
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stack: error?.stack
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});
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throw error;
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}
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};
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/**
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* Apply Redis helper functions
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* @param pubClient
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* @param app
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* @param logger
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*/
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const applyRedisHelpers = ({ pubClient, app, logger }) => {
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// Store session data in Redis
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const setSessionData = async (socketId, key, value) => {
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try {
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await pubClient.hset(`socket:${socketId}`, key, JSON.stringify(value)); // Use Redis pubClient
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} catch (error) {
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logger.log(`Error Setting Session Data for socket ${socketId}: ${error}`, "ERROR", "redis");
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}
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};
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// Retrieve session data from Redis
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const getSessionData = async (socketId, key) => {
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try {
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const data = await pubClient.hget(`socket:${socketId}`, key);
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return data ? JSON.parse(data) : null;
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} catch (error) {
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logger.log(`Error Getting Session Data for socket ${socketId}: ${error}`, "ERROR", "redis");
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}
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};
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// Clear session data from Redis
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const clearSessionData = async (socketId) => {
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try {
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await pubClient.del(`socket:${socketId}`);
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} catch (error) {
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logger.log(`Error Clearing Session Data for socket ${socketId}: ${error}`, "ERROR", "redis");
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}
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};
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/**
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* Add a socket mapping for a user
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* @param email
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* @param socketId
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* @param bodyshopId
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* @returns {Promise<void>}
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*/
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const addUserSocketMapping = async (email, socketId, bodyshopId) => {
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const socketMappingKey = getUserSocketMappingKey(email);
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try {
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devDebugLogger(`Adding socket ${socketId} to user ${email} for bodyshop ${bodyshopId}`);
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// Save the mapping: socketId -> bodyshopId
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await pubClient.hset(socketMappingKey, socketId, bodyshopId);
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// Set TTL (24 hours) for the mapping hash
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await pubClient.expire(socketMappingKey, 86400);
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} catch (error) {
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logger.log(`Error adding socket mapping for ${email} (bodyshop ${bodyshopId}): ${error}`, "ERROR", "redis");
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}
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};
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/**
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* Refresh the TTL for a user's socket mapping
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* @param email
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* @returns {Promise<void>}
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*/
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const refreshUserSocketTTL = async (email) => {
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const socketMappingKey = getUserSocketMappingKey(email);
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try {
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const exists = await pubClient.exists(socketMappingKey);
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if (exists) {
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await pubClient.expire(socketMappingKey, 86400);
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devDebugLogger(`Refreshed TTL for ${email} socket mapping`);
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}
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} catch (error) {
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logger.log(`Error refreshing TTL for ${email}: ${error}`, "ERROR", "redis");
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}
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};
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/**
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* Remove a socket mapping for a user
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* @param email
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* @param socketId
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* @returns {Promise<void>}
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*/
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const removeUserSocketMapping = async (email, socketId) => {
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const socketMappingKey = getUserSocketMappingKey(email);
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try {
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devDebugLogger(`Removing socket ${socketId} mapping for user ${email}`);
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// Look up the bodyshopId associated with this socket
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const bodyshopId = await pubClient.hget(socketMappingKey, socketId);
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if (!bodyshopId) {
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devDebugLogger(`Socket ${socketId} not found for user ${email}`);
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return;
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}
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// Remove the socket mapping
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await pubClient.hdel(socketMappingKey, socketId);
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devDebugLogger(`Removed socket ${socketId} (associated with bodyshop ${bodyshopId}) for user ${email}`);
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// Refresh TTL if any socket mappings remain
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const remainingSockets = await pubClient.hlen(socketMappingKey);
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if (remainingSockets > 0) {
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await pubClient.expire(socketMappingKey, 86400);
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}
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} catch (error) {
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logger.log(`Error removing socket mapping for ${email}: ${error}`, "ERROR", "redis");
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}
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};
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/**
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* Get all socket mappings for a user
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* @param email
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* @returns {Promise<{}>}
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*/
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const getUserSocketMapping = async (email) => {
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const socketMappingKey = getUserSocketMappingKey(email);
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try {
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// Retrieve all socket mappings for the user
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const mapping = await pubClient.hgetall(socketMappingKey);
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const ttl = await pubClient.ttl(socketMappingKey);
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// Group socket IDs by bodyshopId
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const result = {};
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for (const [socketId, bodyshopId] of Object.entries(mapping)) {
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if (!result[bodyshopId]) {
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result[bodyshopId] = { socketIds: [], ttl };
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}
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result[bodyshopId].socketIds.push(socketId);
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}
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return result;
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} catch (error) {
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console.error(`Error retrieving socket mappings for ${email}:`, error);
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throw error;
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}
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};
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/**
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* Get socket IDs for a user by bodyshopId
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* @param email
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* @param bodyshopId
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* @returns {Promise<{socketIds: [string, string], ttl: *}>}
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*/
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const getUserSocketMappingByBodyshop = async (email, bodyshopId) => {
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const socketMappingKey = getUserSocketMappingKey(email);
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try {
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// Retrieve all socket mappings for the user
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const mapping = await pubClient.hgetall(socketMappingKey);
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const ttl = await pubClient.ttl(socketMappingKey);
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// Filter socket IDs for the provided bodyshopId
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const socketIds = Object.entries(mapping).reduce((acc, [socketId, bId]) => {
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if (bId === bodyshopId) {
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acc.push(socketId);
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}
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return acc;
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}, []);
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return { socketIds, ttl };
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} catch (error) {
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logger.log(`Error retrieving socket mappings for ${email} by bodyshop ${bodyshopId}: ${error}`, "ERROR", "redis");
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throw error;
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}
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};
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/**
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* Get bodyshop data from Redis
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* @param bodyshopId
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* @returns {Promise<*>}
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*/
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const getBodyshopFromRedis = async (bodyshopId) => {
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const key = getBodyshopCacheKey(bodyshopId);
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try {
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// Check if data exists in Redis
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const cachedData = await pubClient.get(key);
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if (cachedData) {
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return JSON.parse(cachedData); // Parse and return the full object
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}
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// Cache miss: fetch from DB
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const bodyshopData = await fetchBodyshopFromDB(bodyshopId, logger);
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// Store in Redis as a single JSON string
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const jsonData = JSON.stringify(bodyshopData);
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await pubClient.set(key, jsonData);
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await pubClient.expire(key, BODYSHOP_CACHE_TTL);
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devDebugLogger("bodyshop-cache-miss", {
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bodyshopId,
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action: "Fetched from DB and cached"
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});
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return bodyshopData; // Return the full object
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} catch (error) {
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logger.log("get-bodyshop-from-redis", "ERROR", "redis", null, {
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bodyshopId,
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error: error.message
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});
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throw error;
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}
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};
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/**
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* Update or invalidate bodyshop data in Redis
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* @param bodyshopId
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* @param values
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* @returns {Promise<void>}
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*/
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const updateOrInvalidateBodyshopFromRedis = async (bodyshopId, values = null) => {
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const key = getBodyshopCacheKey(bodyshopId);
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try {
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if (!values) {
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// Invalidate cache by deleting the key
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await pubClient.del(key);
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devDebugLogger("bodyshop-cache-invalidate", {
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bodyshopId,
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action: "Cache invalidated"
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});
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} else {
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// Update cache with the full provided values
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const jsonData = JSON.stringify(values);
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await pubClient.set(key, jsonData);
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await pubClient.expire(key, BODYSHOP_CACHE_TTL);
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devDebugLogger("bodyshop-cache-update", {
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bodyshopId,
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action: "Cache updated",
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values
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});
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}
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} catch (error) {
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logger.log("update-or-invalidate-bodyshop-from-redis", "ERROR", "api", "redis", {
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bodyshopId,
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values,
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error: error.message
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});
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throw error;
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}
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};
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// NOTE: The following code was written for an abandoned branch and things have changes since the,
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// Leaving it here for demonstration purposes, commenting it out so it does not get used
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// Store multiple session data in Redis
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// const setMultipleSessionData = async (socketId, keyValues) => {
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// try {
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// // keyValues is expected to be an object { key1: value1, key2: value2, ... }
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// const entries = Object.entries(keyValues).map(([key, value]) => [key, JSON.stringify(value)]);
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// await pubClient.hset(`socket:${socketId}`, ...entries.flat());
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// } catch (error) {
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// logger.log(`Error Setting Multiple Session Data for socket ${socketId}: ${error}`, "ERROR", "redis");
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// }
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// };
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// Retrieve multiple session data from Redis
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// const getMultipleSessionData = async (socketId, keys) => {
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// try {
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// const data = await pubClient.hmget(`socket:${socketId}`, keys);
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// // Redis returns an object with null values for missing keys, so we parse the non-null ones
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// return Object.fromEntries(keys.map((key, index) => [key, data[index] ? JSON.parse(data[index]) : null]));
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// } catch (error) {
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// logger.log(`Error Getting Multiple Session Data for socket ${socketId}: ${error}`, "ERROR", "redis");
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// }
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// };
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// const setMultipleFromArraySessionData = async (socketId, keyValueArray) => {
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// try {
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// // Use Redis multi/pipeline to batch the commands
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// const multi = pubClient.multi();
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// keyValueArray.forEach(([key, value]) => {
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// multi.hset(`socket:${socketId}`, key, JSON.stringify(value));
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// });
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// await multi.exec(); // Execute all queued commands
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// } catch (error) {
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// logger.log(`Error Setting Multiple Session Data for socket ${socketId}: ${error}`, "ERROR", "redis");
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// }
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// };
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// Helper function to add an item to the end of the Redis list
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// const addItemToEndOfList = async (socketId, key, newItem) => {
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// try {
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// await pubClient.rpush(`socket:${socketId}:${key}`, JSON.stringify(newItem));
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// } catch (error) {
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// let userEmail = "unknown";
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// let socketMappings = {};
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// try {
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// const userData = await getSessionData(socketId, "user");
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// if (userData && userData.email) {
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// userEmail = userData.email;
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// socketMappings = await getUserSocketMapping(userEmail);
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// }
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// } catch (sessionError) {
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// logger.log(`Failed to fetch session data for socket ${socketId}: ${sessionError}`, "ERROR", "redis");
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// }
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// const mappingString = JSON.stringify(socketMappings, null, 2);
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// const errorMessage = `Error adding item to the end of the list for socket ${socketId}: ${error}. User: ${userEmail}, Socket Mappings: ${mappingString}`;
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// logger.log(errorMessage, "ERROR", "redis");
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// }
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// };
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// Helper function to add an item to the beginning of the Redis list
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// const addItemToBeginningOfList = async (socketId, key, newItem) => {
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// try {
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// await pubClient.lpush(`socket:${socketId}:${key}`, JSON.stringify(newItem));
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// } catch (error) {
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// logger.log(`Error adding item to the beginning of the list for socket ${socketId}: ${error}`, "ERROR", "redis");
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// }
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// };
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// Helper function to clear a list in Redis
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// const clearList = async (socketId, key) => {
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// try {
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// await pubClient.del(`socket:${socketId}:${key}`);
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// } catch (error) {
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// logger.log(`Error clearing list for socket ${socketId}: ${error}`, "ERROR", "redis");
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// }
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// };
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// Add methods to manage room users
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// const addUserToRoom = async (room, user) => {
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// try {
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// await pubClient.sadd(room, JSON.stringify(user));
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// } catch (error) {
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// logger.log(`Error adding user to room ${room}: ${error}`, "ERROR", "redis");
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// }
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// };
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// Remove users from room
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// const removeUserFromRoom = async (room, user) => {
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// try {
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// await pubClient.srem(room, JSON.stringify(user));
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// } catch (error) {
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// logger.log(`Error removing user to room ${room}: ${error}`, "ERROR", "redis");
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// }
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// };
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// Get Users in room
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// const getUsersInRoom = async (room) => {
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// try {
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// const users = await pubClient.smembers(room);
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// return users.map((user) => JSON.parse(user));
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// } catch (error) {
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// logger.log(`Error getting users in room ${room}: ${error}`, "ERROR", "redis");
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// }
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// };
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const api = {
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getUserSocketMappingKey,
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getBodyshopCacheKey,
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setSessionData,
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getSessionData,
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clearSessionData,
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addUserSocketMapping,
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removeUserSocketMapping,
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getUserSocketMappingByBodyshop,
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getUserSocketMapping,
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refreshUserSocketTTL,
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getBodyshopFromRedis,
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updateOrInvalidateBodyshopFromRedis
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// setMultipleSessionData,
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// getMultipleSessionData,
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// setMultipleFromArraySessionData,
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// addItemToEndOfList,
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// addItemToBeginningOfList,
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// clearList,
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// addUserToRoom,
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// removeUserFromRoom,
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// getUsersInRoom,
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};
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Object.assign(module.exports, api);
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app.use((req, res, next) => {
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req.sessionUtils = api;
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next();
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});
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return api;
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};
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module.exports = { applyRedisHelpers };
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