cleanup

This reverts commit 6d988c347f.

docker-compose.local.yaml

@@ -63,6 +63,12 @@ services:
     networks:
       - quiz_network
     restart: always
+    #environment:
+    #  - PORT=8000
+    #  - FRONTEND_HOST=frontend
+    #  - FRONTEND_PORT=5173
+    #  - BACKEND_HOST=backend
+    #  - BACKEND_PORT=3000
 
   mongo:
     image: mongo

nginx/.env.example

@@ -0,0 +1,5 @@
+PORT=80
+FRONTEND_HOST=frontend
+FRONTEND_PORT=5173
+BACKEND_HOST=backend
+BACKEND_PORT=3000

nginx/Dockerfile

@@ -1,20 +1,16 @@
 # Stage 1: Build stage
 FROM nginx:1.27-alpine AS builder
-
 # Install required packages
 RUN apk add --no-cache nginx-mod-http-js nginx-mod-http-keyval
 
 # Stage 2: Final stage
 FROM alpine:3.19
 
-# Copy Nginx and NJS modules from builder
-COPY --from=builder /usr/sbin/nginx /usr/sbin/
-COPY --from=builder /usr/lib/nginx/modules/ /usr/lib/nginx/modules/
-COPY --from=builder /etc/nginx/ /etc/nginx/
-COPY --from=builder /usr/lib/nginx/ /usr/lib/nginx/
-
-# Install required runtime dependencies
+# Install gettext for envsubst and other dependencies
 RUN apk add --no-cache \
+    gettext \
+    nginx-mod-http-js \
+    nginx-mod-http-keyval \
     pcre2 \
     ca-certificates \
     pcre \
@@ -24,15 +20,30 @@ RUN apk add --no-cache \
     libxml2 \
     libedit \
     geoip \
-    libxslt \
-    && mkdir -p /var/cache/nginx \
+    libxslt
+
+# Create base nginx directory
+RUN mkdir -p /etc/nginx
+
+# Copy Nginx and NJS modules from builder
+COPY --from=builder /usr/sbin/nginx /usr/sbin/
+COPY --from=builder /usr/lib/nginx/modules/ /usr/lib/nginx/modules/
+RUN rm -rf /etc/nginx/*
+COPY --from=builder /etc/nginx/ /etc/nginx/
+COPY --from=builder /usr/lib/nginx/ /usr/lib/nginx/
+
+# Setup directories and permissions
+RUN mkdir -p /var/cache/nginx \
     && mkdir -p /var/log/nginx \
     && mkdir -p /etc/nginx/conf.d \
     && mkdir -p /etc/nginx/njs \
-    && ln -sf /dev/stdout /var/log/nginx/access.log \
-    && ln -sf /dev/stderr /var/log/nginx/error.log \
-    && addgroup -S nginx \
-    && adduser -D -S -h /var/cache/nginx -s /sbin/nologin -G nginx nginx
+    && mkdir -p /etc/nginx/templates \
+    && chown -R nginx:nginx /var/cache/nginx \
+    && chown -R nginx:nginx /var/log/nginx \
+    && chown -R nginx:nginx /etc/nginx \
+    && touch /var/run/nginx.pid \
+    && chown nginx:nginx /var/run/nginx.pid \
+    && chmod 777 /var/log/nginx
 
 # Copy necessary libraries from builder
 COPY --from=builder /usr/lib/libxml2.so* /usr/lib/
@@ -45,25 +56,29 @@ RUN echo 'load_module modules/ngx_http_js_module.so;' > /tmp/nginx.conf && \
     cat /etc/nginx/nginx.conf >> /tmp/nginx.conf && \
     mv /tmp/nginx.conf /etc/nginx/nginx.conf
 
-# Copy our configuration
-COPY conf.d/default.conf /etc/nginx/conf.d/
+# Copy configurations
+COPY templates/default.conf /etc/nginx/templates/
 COPY njs/main.js /etc/nginx/njs/
+COPY entrypoint.sh /entrypoint.sh
 
-# Set proper permissions
-RUN chown -R nginx:nginx /var/cache/nginx \
-    && chown -R nginx:nginx /var/log/nginx \
-    && chown -R nginx:nginx /etc/nginx/conf.d \
-    && touch /var/run/nginx.pid \
-    && chown -R nginx:nginx /var/run/nginx.pid
+ENV PORT=80 \
+    FRONTEND_HOST=frontend \
+    FRONTEND_PORT=5173 \
+    BACKEND_HOST=backend \
+    BACKEND_PORT=3000
 
-# Verify the configuration
-# RUN nginx -t --dry-run
+# Set final permissions
+RUN chmod +x /entrypoint.sh && \
+    chown -R nginx:nginx /etc/nginx && \
+    chown -R nginx:nginx /var/log/nginx && \
+    chown -R nginx:nginx /var/cache/nginx && \
+    chmod 755 /etc/nginx && \
+    chmod 777 /etc/nginx/conf.d && \
+    chmod 644 /etc/nginx/templates/default.conf && \
+    chmod 644 /etc/nginx/conf.d/default.conf
 
-# Switch to non-root user
+# Switch to nginx user
 USER nginx
 
-# Expose HTTP port
-EXPOSE 80
-
-# Start Nginx
-CMD ["nginx", "-g", "daemon off;"]
+# Start Nginx using entrypoint script
+ENTRYPOINT ["/entrypoint.sh"]

nginx/entrypoint.sh

@@ -0,0 +1,10 @@
+#!/bin/sh
+# entrypoint.sh
+
+# We are already running as nginx user
+envsubst '${PORT} ${FRONTEND_HOST} ${FRONTEND_PORT} ${BACKEND_HOST} ${BACKEND_PORT}' \
+    < /etc/nginx/templates/default.conf \
+    > /etc/nginx/conf.d/default.conf
+
+# Start nginx
+exec nginx -g "daemon off;"

nginx/templates/default.conf

@@ -8,15 +8,15 @@ map $http_upgrade $connection_upgrade {
 }
 
 upstream frontend {
-    server frontend:5173;
+    server ${FRONTEND_HOST}:${FRONTEND_PORT};
 }
 
 upstream backend {
-    server backend:3000;
+    server ${BACKEND_HOST}:${BACKEND_PORT};
 }
 
 server {
-    listen 80;
+    listen ${PORT};
     
     set $proxy_target "";
     

server/roomsProviders/docker-provider.js

@@ -8,7 +8,7 @@ class DockerRoomProvider extends BaseRoomProvider {
     const dockerSocket = process.env.DOCKER_SOCKET || "/var/run/docker.sock";
 
     this.docker = new Docker({ socketPath: dockerSocket });
-    this.docker_network = 'evaluetonsavoir_quiz_network';
+    this.docker_network = process.env.QUIZ_NETWORK_NAME || 'evaluetonsavoir_quiz_network';
   }
 
   async syncInstantiatedRooms() {

test/stressTest/class/watcher.js

@@ -39,14 +39,12 @@ export class Watcher extends RoomParticipant {
         }
 
         this.checkRessourceInterval = setInterval(() => this.checkRessource(), intervalMs);
-        console.log(`Started resource checking for room ${this.roomName}.`);
     }
 
     stopCheckingResources() {
         if (this.checkRessourceInterval) {
             clearInterval(this.checkRessourceInterval);
             this.checkRessourceInterval = null;
-            console.log(`Stopped resource checking for room ${this.roomName}.`);
         }
     }
 

test/stressTest/main.js

@@ -5,255 +5,157 @@ import { Watcher } from './class/watcher.js';
 import dotenv from 'dotenv';
 import generateMetricsReport from './utility/metrics_generator.js';
 
-// Load environment variables
 dotenv.config();
 
-const BASE_URL = process.env.BASE_URL || 'http://localhost';
-const user = {
-    username: process.env.USER_EMAIL || 'admin@admin.com',
-    password: process.env.USER_PASSWORD || 'admin'
+const config = {
+    baseUrl: process.env.BASE_URL || 'http://msevignyl.duckdns.org',
+    auth: {
+        username: process.env.USER_EMAIL || 'admin@admin.com',
+        password: process.env.USER_PASSWORD || 'admin'
+    },
+    rooms: {
+        count: parseInt(process.env.NUMBER_ROOMS || '5'),
+        usersPerRoom: parseInt(process.env.USERS_PER_ROOM || '60'),
+        batchSize: 5,
+        batchDelay: 250
+    },
+    simulation: {
+        maxMessages: parseInt(process.env.MAX_MESSAGES || '20'),
+        messageInterval: parseInt(process.env.CONVERSATION_INTERVAL || '1000'),
+        responseTimeout: 5000
+    }
 };
-const numberRooms = parseInt(process.env.NUMBER_ROOMS || '4');
-const usersPerRoom = parseInt(process.env.USERS_PER_ROOM || '60');
-const roomAssociations = {};
-const maxMessages = parseInt(process.env.MAX_MESSAGES || '20');
-const conversationInterval = parseInt(process.env.CONVERSATION_INTERVAL || '1000');
-const batchSize = 5;
-const batchDelay = 250;
-const roomDelay = 500;
 
-/**
- * Creates a room and immediately connects a teacher to it.
- */
-async function createRoomWithTeacher(token, index) {
+const rooms = new Map();
+
+async function setupRoom(token, index) {
     try {
-        const room = await createRoomContainer(BASE_URL, token);
-        if (!room?.id) {
-            throw new Error('Room creation failed');
-        }
+        const room = await createRoomContainer(config.baseUrl, token);
+        if (!room?.id) throw new Error('Room creation failed');
 
-        // Initialize room associations
-        roomAssociations[room.id] = { watcher: null, teacher: null, students: [] };
-
-        // Create and connect teacher immediately
         const teacher = new Teacher(`teacher_${index}`, room.id);
-        roomAssociations[room.id].teacher = teacher;
+        const watcher = new Watcher(`watcher_${index}`, room.id);
+        await Promise.all([
+            teacher.connectToRoom(config.baseUrl)
+                .catch(err => console.warn(`Teacher ${index} connection failed:`, err.message)),
+            watcher.connectToRoom(config.baseUrl)
+                .catch(err => console.warn(`Watcher ${index} connection failed:`, err.message))
+        ]);
 
-        // Connect teacher to room
-        await teacher.connectToRoom(BASE_URL);
+        const students = Array.from({ length: config.rooms.usersPerRoom - 2 },
+            (_, i) => new Student(`student_${index}_${i}`, room.id));
 
+        rooms.set(room.id, { teacher, watcher, students });
         return room.id;
     } catch (err) {
-        console.warn(`Failed to create/connect room ${index + 1}:`, err.message);
+        console.warn(`Room ${index} setup failed:`, err.message);
         return null;
     }
 }
 
-/**
- * Creates rooms and connects teachers with controlled concurrency.
- */
-async function createRoomContainers() {
-    console.log('Attempting login or register to get token');
-    const token = await attemptLoginOrRegister(BASE_URL, user.username, user.password);
-    if (!token) throw new Error('Failed to login or register.');
+async function connectParticipants(roomId) {
+    const { students } = rooms.get(roomId);
+    const participants = [...students];
 
-    console.log('Room creation with immediate teacher connection');
-    const roomPromises = Array.from({ length: numberRooms }, (_, index) =>
-        createRoomWithTeacher(token, index)
+    for (let i = 0; i < participants.length; i += config.rooms.batchSize) {
+        const batch = participants.slice(i, i + config.rooms.batchSize);
+        await Promise.all(batch.map(p =>
+            Promise.race([
+                p.connectToRoom(config.baseUrl),
+                new Promise((_, reject) => setTimeout(() => reject(new Error('Timeout')), 10000))
+            ]).catch(err => console.warn(`Connection failed for ${p.username}:`, err.message))
+        ));
+        await new Promise(resolve => setTimeout(resolve, config.rooms.batchDelay));
+    }
+}
+
+async function simulate() {
+    const simulations = Array.from(rooms.entries()).map(async ([roomId, { teacher, students }]) => {
+        const connectedStudents = students.filter(student => student.socket?.connected);
+        const expectedResponses = connectedStudents.length;
+
+        for (let i = 0; i < config.simulation.maxMessages; i++) {
+            const initialMessages = teacher.nbrMessageReceived;
+
+            teacher.broadcastMessage(`Message ${i + 1} from ${teacher.username}`);
+
+            try {
+                await Promise.race([
+                    new Promise(resolve => {
+                        const checkResponses = setInterval(() => {
+                            const receivedResponses = teacher.nbrMessageReceived - initialMessages;
+                            if (receivedResponses >= expectedResponses) {
+                                clearInterval(checkResponses);
+                                resolve();
+                            }
+                        }, 100);
+                    })
+                ]);
+            } catch (error) {
+                console.error(`Error in room ${roomId} message ${i + 1}:`, error);
+            }
+
+            await new Promise(resolve => setTimeout(resolve, config.simulation.messageInterval));
+        }
+    });
+
+    // Wait for all simulations to complete
+    await Promise.all(simulations);
+    console.log('All room simulations completed');
+}
+
+async function generateReport() {
+    const data = Object.fromEntries(
+        Array.from(rooms.entries()).map(([id, { watcher }]) => [
+            id,
+            watcher.roomRessourcesData
+        ])
     );
-
-    const results = await Promise.allSettled(roomPromises);
-    const successfulRooms = results.filter(r => r.status === 'fulfilled' && r.value).length;
-
-    console.log(`Total rooms created and connected (${numberRooms}): ${successfulRooms}`);
-    console.log('Finished room creation and teacher connection');
+    return generateMetricsReport(data);
 }
 
-/**
- * Adds remaining participants (watcher, students) to rooms.
- */
-function addRemainingUsers() {
-    console.log('Adding remaining room participants');
-    Object.keys(roomAssociations).forEach((roomId, roomIndex) => {
-        const participants = roomAssociations[roomId];
-
-        // Add watcher
-        participants.watcher = new Watcher(`watcher_${roomIndex}`, roomId);
-
-        // Add students
-        for (let i = 0; i < usersPerRoom - 2; i++) {
-            participants.students.push(new Student(`student_${roomIndex}_${i}`, roomId));
-        }
-    });
-    console.log('Finished adding remaining room participants');
-}
-
-/**
- * Connects remaining participants to their respective rooms.
- */
-async function connectRemainingParticipants(baseUrl) {
-    console.log('Connecting remaining participants in batches');
-
-    for (const [roomId, participants] of Object.entries(roomAssociations)) {
-        console.log(`Processing room ${roomId}`);
-
-        const remainingParticipants = [
-            participants.watcher,
-            ...participants.students
-        ].filter(Boolean);
-
-        // Connect in smaller batches with longer delays
-        for (let i = 0; i < remainingParticipants.length; i += batchSize) {
-            const batch = remainingParticipants.slice(i, i + batchSize);
-
-            // Add connection timeout handling
-            const batchPromises = batch.map(participant =>
-                Promise.race([
-                    participant.connectToRoom(baseUrl),
-                    new Promise((_, reject) =>
-                        setTimeout(() => reject(new Error('Connection timeout')), 10000)
-                    )
-                ]).catch(err => {
-                    console.warn(
-                        `Failed to connect ${participant.username} in room ${roomId}:`,
-                        err.message
-                    );
-                    return null;
-                })
-            );
-
-            await Promise.all(batchPromises);
-
-            // Cleanup disconnected sockets
-            batch.forEach(participant => {
-                if (!participant.socket?.connected) {
-                    participant.disconnect();
-                }
-            });
-
-            await new Promise(resolve => setTimeout(resolve, batchDelay));
-        }
-
-        // Add delay between rooms
-        await new Promise(resolve => setTimeout(resolve, roomDelay));
+function cleanup() {
+    for (const { teacher, watcher, students } of rooms.values()) {
+        [teacher, watcher, ...students].forEach(p => p?.disconnect());
     }
-
-    console.log('Finished connecting remaining participants');
-}
-
-// Rest of the code remains the same
-async function simulateParticipants() {
-    const conversationPromises = Object.entries(roomAssociations).map(async ([roomId, participants]) => {
-        const { teacher, students } = participants;
-
-        if (!teacher || students.length === 0) {
-            console.warn(`Room ${roomId} has no teacher or students to simulate.`);
-            return;
-        }
-
-        console.log(`Starting simulation for room ${roomId}`);
-
-        await new Promise(resolve => setTimeout(resolve, 2000));
-
-        for (let i = 0; i < maxMessages; i++) {
-            const teacherMessage = `Message ${i + 1} from ${teacher.username}`;
-            teacher.broadcastMessage(teacherMessage);
-            await new Promise(resolve => setTimeout(resolve, conversationInterval));
-        }
-
-        console.log(`Finished simulation for room ${roomId}`);
-    });
-
-    await Promise.all(conversationPromises);
-}
-
-function disconnectParticipants() {
-    console.time('Disconnecting participants');
-    Object.values(roomAssociations).forEach(participants => {
-        participants.teacher?.disconnect();
-        participants.watcher?.disconnect();
-        participants.students.forEach(student => student.disconnect());
-    });
-    console.timeEnd('Disconnecting participants');
-    console.log('All participants disconnected successfully.');
-}
-
-async function wait(ms) {
-    return new Promise(resolve => setTimeout(resolve, ms));
-}
-
-async function generateExecutionData() {
-    console.log('Generating execution data');
-
-    const allRoomsData = {};
-    for (const [roomId, participants] of Object.entries(roomAssociations)) {
-        if (participants.watcher?.roomRessourcesData.length > 0) {
-            // Add phase markers to the data
-            const data = participants.watcher.roomRessourcesData;
-            const simulationStartIdx = 20; // Assuming first 20 samples are baseline
-            const simulationEndIdx = data.length - 20; // Last 20 samples are post-simulation
-
-            data.forEach((sample, index) => {
-                if (index < simulationStartIdx) {
-                    sample.phase = 'baseline';
-                } else if (index > simulationEndIdx) {
-                    sample.phase = 'post-simulation';
-                } else {
-                    sample.phase = 'simulation';
-                }
-            });
-
-            allRoomsData[roomId] = data;
-        }
-    }
-
-    const result = await generateMetricsReport(allRoomsData);
-    console.log(`Generated metrics in ${result.outputDir}`);
-
-    console.log('Finished generating execution data');
 }
 
 async function main() {
     try {
-        await createRoomContainers();
-        addRemainingUsers();
-        await connectRemainingParticipants(BASE_URL);
+        const token = await attemptLoginOrRegister(config.baseUrl, config.auth.username, config.auth.password);
+        if (!token) throw new Error('Authentication failed');
 
-        // Wait for initial baseline metrics
-        console.log('Collecting baseline metrics...');
-        await wait(5000);
+        console.log('Creating rooms...');
+        const roomIds = await Promise.all(
+            Array.from({ length: config.rooms.count }, (_, i) => setupRoom(token, i))
+        );
 
-        await simulateParticipants();
+        console.log('Connecting participants...');
+        await Promise.all(roomIds.filter(Boolean).map(connectParticipants));
 
-        console.log('Waiting for system to stabilize...');
-        await wait(5000); // 5 second delay
-        
-        await generateExecutionData();
-        console.log('All tasks completed successfully!');
+        console.log('Retrieving baseline metrics...');
+        await new Promise(resolve => setTimeout(resolve, 10000)); // Baseline metrics
+
+        console.log('Starting simulation across all rooms...');
+        await simulate();
+
+        console.log('Simulation complete. Waiting for system stabilization...');
+        await new Promise(resolve => setTimeout(resolve, 10000)); // System stabilization
+
+        console.log('All simulations finished, generating final report...');
+        const folderName = await generateReport();
+        console.log(`Metrics report generated in ${folderName.outputDir}`);
+
+        console.log('All done!');
     } catch (error) {
         console.error('Error:', error.message);
+    } finally {
+        cleanup();
     }
 }
 
-// Graceful shutdown handlers
-process.on('SIGINT', () => {
-    console.log('Process interrupted (Ctrl+C).');
-    disconnectParticipants();
-    process.exit(0);
-});
-
-process.on('exit', disconnectParticipants);
-
-process.on('uncaughtException', err => {
-    console.error('Uncaught Exception:', err);
-    disconnectParticipants();
-    process.exit(1);
-});
-
-process.on('unhandledRejection', (reason, promise) => {
-    console.error('Unhandled Rejection at:', promise, 'reason:', reason);
-    disconnectParticipants();
-    process.exit(1);
+['SIGINT', 'exit', 'uncaughtException', 'unhandledRejection'].forEach(event => {
+    process.on(event, cleanup);
 });
 
 main();

test/stressTest/utility/writeMetrics.js

@@ -1,227 +0,0 @@
-import fs from "fs";
-import path from "path";
-import { ChartJSNodeCanvas } from "chartjs-node-canvas";
-
-// Ensure a directory exists, creating it if necessary
-function ensureDirectoryExists(directory) {
-    try {
-        fs.mkdirSync(directory, { recursive: true });
-    } catch (err) {
-        console.error(`Error creating directory ${directory}:`, err.message);
-        throw err;
-    }
-}
-
-// Write metrics to a JSON file
-export function writeMetricsToFile(metrics) {
-    if (!metrics.endTime) {
-        console.error("Error: metrics.endTime is not defined. Ensure it is set before calling this function.");
-        return;
-    }
-
-    const directory = `./metrics/${metrics.startTime.toISOString().replace(/[:.]/g, "-")}`;
-    const filename = path.join(directory, "metrics_report.json");
-
-    // Ensure the directory exists
-    ensureDirectoryExists(directory);
-
-    const metricsData = {
-        summary: {
-            roomsCreated: metrics.roomsCreated,
-            roomsFailed: metrics.roomsFailed,
-            teachersConnected: metrics.teachersConnected,
-            teachersFailed: metrics.teachersFailed,
-            studentsConnected: metrics.studentsConnected,
-            studentsFailed: metrics.studentsFailed,
-        },
-        messages: {
-            messagesSent: metrics.messagesSent,
-            messagesReceived: metrics.messagesReceived,
-            throughput: metrics.throughput.toFixed(2), // Messages per second
-        },
-        latencies: {
-            totalLatency: metrics.totalLatency,
-            averageLatency: metrics.teachersConnected + metrics.studentsConnected
-                ? (metrics.totalLatency / (metrics.teachersConnected + metrics.studentsConnected)).toFixed(2)
-                : null,
-            maxLatency: metrics.maxLatency,
-            minLatency: metrics.minLatency,
-        },
-        timing: {
-            startTime: metrics.startTime?.toISOString(),
-            endTime: metrics.endTime?.toISOString(),
-            executionTimeInSeconds: metrics.endTime && metrics.startTime
-                ? (metrics.endTime - metrics.startTime) / 1000
-                : null,
-        },
-    };
-
-    // Write metrics to a file
-    fs.writeFile(filename, JSON.stringify(metricsData, null, 4), (err) => {
-        if (err) {
-            console.error(`Error writing metrics to file:`, err.message);
-        } else {
-            console.log(`Metrics saved to file: ${filename}`);
-        }
-    });
-}
-
-// Generate charts for resource data
-export async function generateGraphs(resourceData, metrics) {
-    if (!metrics.endTime) {
-        console.error("Error: metrics.endTime is not defined. Ensure it is set before calling this function.");
-        return;
-    }
-
-    const directory = `./metrics/${metrics.startTime.toISOString().replace(/[:.]/g, "-")}`;
-    ensureDirectoryExists(directory);
-
-    const chartJSNodeCanvas = new ChartJSNodeCanvas({ width: 800, height: 600 });
-
-    // Aggregated data for all containers
-    const aggregatedTimestamps = [];
-    const aggregatedMemoryUsage = [];
-    const aggregatedCpuUserPercentage = [];
-    const aggregatedCpuSystemPercentage = [];
-
-    // Generate charts for individual containers
-    for (const [roomId, data] of Object.entries(resourceData)) {
-        if (!data || !data.length) {
-            console.warn(`No data available for room ${roomId}. Skipping individual charts.`);
-            continue;
-        }
-
-        // Extract data
-        const timestamps = data.map((point) => new Date(point.timestamp).toLocaleTimeString());
-        const memoryUsage = data.map((point) => (point.memory.rss || 0) / (1024 * 1024)); // MB
-        const cpuUserPercentage = data.map((point) => point.cpu.userPercentage || 0);
-        const cpuSystemPercentage = data.map((point) => point.cpu.systemPercentage || 0);
-
-        // Update aggregated data
-        data.forEach((point, index) => {
-            if (!aggregatedTimestamps[index]) {
-                aggregatedTimestamps[index] = timestamps[index];
-                aggregatedMemoryUsage[index] = 0;
-                aggregatedCpuUserPercentage[index] = 0;
-                aggregatedCpuSystemPercentage[index] = 0;
-            }
-            aggregatedMemoryUsage[index] += memoryUsage[index];
-            aggregatedCpuUserPercentage[index] += cpuUserPercentage[index];
-            aggregatedCpuSystemPercentage[index] += cpuSystemPercentage[index];
-        });
-
-        // Memory usage chart
-        await saveChart(
-            chartJSNodeCanvas,
-            {
-                labels: timestamps,
-                datasets: [
-                    {
-                        label: "Memory Usage (MB)",
-                        data: memoryUsage,
-                        borderColor: "blue",
-                        fill: false,
-                    },
-                ],
-            },
-            "Time",
-            "Memory Usage (MB)",
-            path.join(directory, `memory-usage-room-${roomId}.png`)
-        );
-
-        // CPU usage chart
-        await saveChart(
-            chartJSNodeCanvas,
-            {
-                labels: timestamps,
-                datasets: [
-                    {
-                        label: "CPU User Usage (%)",
-                        data: cpuUserPercentage,
-                        borderColor: "red",
-                        fill: false,
-                    },
-                    {
-                        label: "CPU System Usage (%)",
-                        data: cpuSystemPercentage,
-                        borderColor: "orange",
-                        fill: false,
-                    },
-                ],
-            },
-            "Time",
-            "CPU Usage (%)",
-            path.join(directory, `cpu-usage-room-${roomId}.png`)
-        );
-
-        console.log(`Charts generated for room ${roomId}`);
-    }
-
-    // Ensure aggregated data is not empty
-    if (!aggregatedTimestamps.length) {
-        console.error("Error: Aggregated data is empty. Verify container data.");
-        return;
-    }
-
-    // Aggregated memory usage chart
-    await saveChart(
-        chartJSNodeCanvas,
-        {
-            labels: aggregatedTimestamps,
-            datasets: [
-                {
-                    label: "Total Memory Usage (MB)",
-                    data: aggregatedMemoryUsage,
-                    borderColor: "blue",
-                    fill: false,
-                },
-            ],
-        },
-        "Time",
-        "Memory Usage (MB)",
-        path.join(directory, "aggregated-memory-usage.png")
-    );
-
-    // Aggregated CPU usage chart
-    await saveChart(
-        chartJSNodeCanvas,
-        {
-            labels: aggregatedTimestamps,
-            datasets: [
-                {
-                    label: "Total CPU User Usage (%)",
-                    data: aggregatedCpuUserPercentage,
-                    borderColor: "red",
-                    fill: false,
-                },
-                {
-                    label: "Total CPU System Usage (%)",
-                    data: aggregatedCpuSystemPercentage,
-                    borderColor: "orange",
-                    fill: false,
-                },
-            ],
-        },
-        "Time",
-        "CPU Usage (%)",
-        path.join(directory, "aggregated-cpu-usage.png")
-    );
-
-    console.log("Aggregated charts generated.");
-}
-
-// Helper function to save a chart
-async function saveChart(chartJSNodeCanvas, data, xLabel, yLabel, outputFile) {
-    const chartConfig = {
-        type: "line",
-        data,
-        options: {
-            scales: {
-                x: { title: { display: true, text: xLabel } },
-                y: { title: { display: true, text: yLabel } },
-            },
-        },
-    };
-    const chartBuffer = await chartJSNodeCanvas.renderToBuffer(chartConfig);
-    fs.writeFileSync(outputFile, chartBuffer);
-}