Updated lint errors

.eslintrc.json

@@ -1,34 +1,68 @@
 {
-    "env": {
-      "browser": true,
-      "commonjs": true,
-      "es2021": true,
-      "node": true,
-      "jest": true
-    },
-    "extends": [
-      "eslint:recommended"
+  "env": {
+    "browser": true,
+    "commonjs": true,
+    "es2021": true,
+    "node": true,
+    "jest": true
+  },
+  "extends": [
+    "eslint:recommended"
+  ],
+  "parserOptions": {
+    "ecmaVersion": "latest"
+  },
+  "rules": {
+    "indent": [
+      "error",
+      2
     ],
-    "parserOptions": {
-      "ecmaVersion": "latest"
-    },
-    "rules": {
-      "indent": ["error", 2],
-      "linebreak-style": ["error", "unix"],
-      "quotes": ["error", "single"],
-      "semi": ["error", "always"],
-      "no-unused-vars": ["error", { "argsIgnorePattern": "^_" }],
-      "no-console": "off",
-      "no-trailing-spaces": "error",
-      "eol-last": "error",
-      "comma-dangle": ["error", "never"],
-      "object-curly-spacing": ["error", "always"],
-      "array-bracket-spacing": ["error", "never"],
-      "space-before-function-paren": ["error", "never"],
-      "keyword-spacing": "error",
-      "space-infix-ops": "error",
-      "no-multiple-empty-lines": ["error", { "max": 2 }],
-      "prefer-const": "error",
-      "no-var": "error"
-    }
-  }
+    "linebreak-style": [
+      "error",
+      "unix"
+    ],
+    "quotes": [
+      "error",
+      "single"
+    ],
+    "semi": [
+      "error",
+      "always"
+    ],
+    "no-unused-vars": [
+      "error",
+      {
+        "argsIgnorePattern": "^_"
+      }
+    ],
+    "no-console": "off",
+    "no-trailing-spaces": "error",
+    "eol-last": "error",
+    "comma-dangle": [
+      "error",
+      "never"
+    ],
+    "object-curly-spacing": [
+      "error",
+      "always"
+    ],
+    "array-bracket-spacing": [
+      "error",
+      "never"
+    ],
+    "space-before-function-paren": [
+      "error",
+      "never"
+    ],
+    "keyword-spacing": "error",
+    "space-infix-ops": "error",
+    "no-multiple-empty-lines": [
+      "error",
+      {
+        "max": 2
+      }
+    ],
+    "prefer-const": "error",
+    "no-var": "error"
+  }
+}

package.json

@@ -1,47 +1,53 @@
 {
-    "name": "harbor-ci-cd-demo",
-    "version": "1.0.0",
-    "description": "System Monitoring Dashboard - Harbor CI/CD Demo",
-    "main": "src/app.js",
-    "scripts": {
-      "start": "node src/app.js",
-      "dev": "nodemon src/app.js",
-      "test": "jest",
-      "test:watch": "jest --watch",
-      "test:coverage": "jest --coverage",
-      "lint": "eslint src/ tests/",
-      "lint:fix": "eslint src/ tests/ --fix"
-    },
-    "keywords": ["monitoring", "dashboard", "nodejs", "cicd", "harbor"],
-    "author": "Your Name",
-    "license": "MIT",
-    "dependencies": {
-      "express": "^4.18.2",
-      "cors": "^2.8.5",
-      "helmet": "^7.1.0",
-      "morgan": "^1.10.0",
-      "compression": "^1.7.4",
-      "dotenv": "^16.3.1"
-    },
-    "devDependencies": {
-      "jest": "^29.7.0",
-      "supertest": "^6.3.3",
-      "eslint": "^8.53.0",
-      "nodemon": "^3.0.1"
-    },
-    "jest": {
-      "testEnvironment": "node",
-      "collectCoverageFrom": [
-        "src/**/*.js",
-        "!src/public/**"
-      ],
-      "coverageThreshold": {
-        "global": {
-          "branches": 80,
-          "functions": 80,
-          "lines": 80,
-          "statements": 80
-        }
+  "name": "harbor-ci-cd-demo",
+  "version": "1.0.0",
+  "description": "System Monitoring Dashboard - Harbor CI/CD Demo",
+  "main": "src/app.js",
+  "scripts": {
+    "start": "node src/app.js",
+    "dev": "nodemon src/app.js",
+    "test": "jest",
+    "test:watch": "jest --watch",
+    "test:coverage": "jest --coverage",
+    "lint": "eslint src/ tests/",
+    "lint:fix": "eslint src/ tests/ --fix"
+  },
+  "keywords": [
+    "monitoring",
+    "dashboard",
+    "nodejs",
+    "cicd",
+    "harbor"
+  ],
+  "author": "Your Name",
+  "license": "MIT",
+  "dependencies": {
+    "express": "^4.18.2",
+    "cors": "^2.8.5",
+    "helmet": "^7.1.0",
+    "morgan": "^1.10.0",
+    "compression": "^1.7.4",
+    "dotenv": "^16.3.1"
+  },
+  "devDependencies": {
+    "jest": "^29.7.0",
+    "supertest": "^6.3.3",
+    "eslint": "^8.53.0",
+    "nodemon": "^3.0.1"
+  },
+  "jest": {
+    "testEnvironment": "node",
+    "collectCoverageFrom": [
+      "src/**/*.js",
+      "!src/public/**"
+    ],
+    "coverageThreshold": {
+      "global": {
+        "branches": 80,
+        "functions": 80,
+        "lines": 80,
+        "statements": 80
       }
     }
-  }
+  }
+}

src/app.js

@@ -47,7 +47,7 @@ app.get('/debug/files', (req, res) => {
         url: `http://localhost:${PORT}/${file}`
       };
     });
-    
+
     res.json({
       publicPath,
       files: fileDetails,
@@ -101,7 +101,7 @@ app.get('/test-static', (req, res) => {
 app.get('/', (req, res) => {
   const indexPath = path.join(publicPath, 'index.html');
   console.log('🏠 Serving index.html from:', indexPath);
-  
+
   if (require('fs').existsSync(indexPath)) {
     res.sendFile(indexPath);
   } else {
@@ -119,7 +119,7 @@ app.use((err, req, res, next) => {
 // 404 handler
 app.use('*', (req, res) => {
   console.log('🔍 404 for:', req.originalUrl);
-  res.status(404).json({ 
+  res.status(404).json({
     error: 'Not Found',
     url: req.originalUrl,
     message: 'Static file or route not found'

src/middleware/logger.js

@@ -3,10 +3,10 @@ const { incrementCounter, recordHistogram } = require('../utils/metrics');
 // Request logging and metrics middleware
 function logger(req, res, next) {
   const startTime = Date.now();
-  
+
   // Log request start
   console.log(`${new Date().toISOString()} - ${req.method} ${req.url} - ${req.ip}`);
-  
+
   // Increment request counter
   incrementCounter('http_requests_total', {
     method: req.method,
@@ -15,24 +15,24 @@ function logger(req, res, next) {
 
   // Override res.end to capture response time and status
   const originalEnd = res.end;
-  res.end = function(chunk, encoding) {
+  res.end = function (chunk, encoding) {
     const responseTime = Date.now() - startTime;
-    
+
     // Record response time histogram
     recordHistogram('http_request_duration_ms', responseTime, {
       method: req.method,
       status_code: res.statusCode
     });
-    
+
     // Increment response counter
     incrementCounter('http_responses_total', {
       method: req.method,
       status_code: res.statusCode
     });
-    
+
     // Log request completion
     console.log(`${new Date().toISOString()} - ${req.method} ${req.url} - ${res.statusCode} - ${responseTime}ms`);
-    
+
     // Call original end method
     originalEnd.call(this, chunk, encoding);
   };

src/public/app.js

@@ -1,113 +1,113 @@
 class MonitoringDashboard {
-    constructor() {
-        this.refreshInterval = null;
-        this.autoRefresh = true;
-        this.refreshRate = 30000; // 30 seconds
-        this.init();
-    }
+  constructor() {
+    this.refreshInterval = null;
+    this.autoRefresh = true;
+    this.refreshRate = 30000; // 30 seconds
+    this.init();
+  }
 
-    async init() {
-        await this.loadAllData();
-        this.startAutoRefresh();
-        this.setupEventListeners();
-    }
+  async init() {
+    await this.loadAllData();
+    this.startAutoRefresh();
+    this.setupEventListeners();
+  }
 
-    async loadAllData() {
-        this.updateStatus('loading', 'Loading...');
-        
-        try {
-            await Promise.all([
-                this.loadSystemInfo(),
-                this.loadMemoryUsage(),
-                this.loadHealthStatus(),
-                this.loadApiMetrics(),
-                this.loadProcessInfo()
-            ]);
-            
-            this.updateStatus('healthy', 'System Healthy');
-            this.updateLastUpdated();
-        } catch (error) {
-            console.error('Error loading data:', error);
-            this.updateStatus('error', 'Error Loading Data');
-        }
-    }
+  async loadAllData() {
+    this.updateStatus('loading', 'Loading...');
 
-    async loadSystemInfo() {
-        try {
-            const response = await fetch('/api/system');
-            const result = await response.json();
-            
-            if (result.success) {
-                this.renderSystemInfo(result.data);
-            } else {
-                throw new Error(result.error);
-            }
-        } catch (error) {
-            this.renderError('system-info', 'Failed to load system information');
-        }
-    }
+    try {
+      await Promise.all([
+        this.loadSystemInfo(),
+        this.loadMemoryUsage(),
+        this.loadHealthStatus(),
+        this.loadApiMetrics(),
+        this.loadProcessInfo()
+      ]);
 
-    async loadMemoryUsage() {
-        try {
-            const response = await fetch('/api/memory');
-            const result = await response.json();
-            
-            if (result.success) {
-                this.renderMemoryUsage(result.data);
-            } else {
-                throw new Error(result.error);
-            }
-        } catch (error) {
-            this.renderError('memory-usage', 'Failed to load memory data');
-        }
+      this.updateStatus('healthy', 'System Healthy');
+      this.updateLastUpdated();
+    } catch (error) {
+      console.error('Error loading data:', error);
+      this.updateStatus('error', 'Error Loading Data');
     }
+  }
 
-    async loadHealthStatus() {
-        try {
-            const response = await fetch('/health/detailed');
-            const result = await response.json();
-            
-            this.renderHealthStatus(result);
-            this.updateOverallStatus(result.status);
-        } catch (error) {
-            this.renderError('health-status', 'Failed to load health data');
-            this.updateStatus('error', 'Health Check Failed');
-        }
+  async loadSystemInfo() {
+    try {
+      const response = await fetch('/api/system');
+      const result = await response.json();
+
+      if (result.success) {
+        this.renderSystemInfo(result.data);
+      } else {
+        throw new Error(result.error);
+      }
+    } catch (error) {
+      this.renderError('system-info', 'Failed to load system information');
     }
+  }
 
-    async loadApiMetrics() {
-        try {
-            const response = await fetch('/api/metrics');
-            const result = await response.json();
-            
-            if (result.success) {
-                this.renderApiMetrics(result.data);
-            } else {
-                throw new Error(result.error);
-            }
-        } catch (error) {
-            this.renderError('api-metrics', 'Failed to load metrics');
-        }
+  async loadMemoryUsage() {
+    try {
+      const response = await fetch('/api/memory');
+      const result = await response.json();
+
+      if (result.success) {
+        this.renderMemoryUsage(result.data);
+      } else {
+        throw new Error(result.error);
+      }
+    } catch (error) {
+      this.renderError('memory-usage', 'Failed to load memory data');
     }
+  }
 
-    async loadProcessInfo() {
-        try {
-            const response = await fetch('/api/process');
-            const result = await response.json();
-            
-            if (result.success) {
-                this.renderProcessInfo(result.data);
-            } else {
-                throw new Error(result.error);
-            }
-        } catch (error) {
-            this.renderError('process-info', 'Failed to load process information');
-        }
+  async loadHealthStatus() {
+    try {
+      const response = await fetch('/health/detailed');
+      const result = await response.json();
+
+      this.renderHealthStatus(result);
+      this.updateOverallStatus(result.status);
+    } catch (error) {
+      this.renderError('health-status', 'Failed to load health data');
+      this.updateStatus('error', 'Health Check Failed');
     }
+  }
 
-    renderSystemInfo(data) {
-        const container = document.getElementById('system-info');
-        container.innerHTML = `
+  async loadApiMetrics() {
+    try {
+      const response = await fetch('/api/metrics');
+      const result = await response.json();
+
+      if (result.success) {
+        this.renderApiMetrics(result.data);
+      } else {
+        throw new Error(result.error);
+      }
+    } catch (error) {
+      this.renderError('api-metrics', 'Failed to load metrics');
+    }
+  }
+
+  async loadProcessInfo() {
+    try {
+      const response = await fetch('/api/process');
+      const result = await response.json();
+
+      if (result.success) {
+        this.renderProcessInfo(result.data);
+      } else {
+        throw new Error(result.error);
+      }
+    } catch (error) {
+      this.renderError('process-info', 'Failed to load process information');
+    }
+  }
+
+  renderSystemInfo(data) {
+    const container = document.getElementById('system-info');
+    container.innerHTML = `
             <div class="metric-item">
                 <strong>Hostname:</strong>
                 <span class="metric-value">${data.hostname}</span>
@@ -137,18 +137,18 @@ class MonitoringDashboard {
                 <span class="metric-value">${data.nodeVersion}</span>
             </div>
         `;
-    }
+  }
 
-    renderMemoryUsage(data) {
-        const container = document.getElementById('memory-usage');
-        
-        const systemPercentage = data.system.percentage;
-        const systemClass = systemPercentage > 80 ? 'danger' : systemPercentage > 60 ? 'warning' : '';
-        
-        const processHeapPercentage = (data.process.heapUsed / data.process.heapTotal) * 100;
-        const processClass = processHeapPercentage > 80 ? 'danger' : processHeapPercentage > 60 ? 'warning' : '';
-        
-        container.innerHTML = `
+  renderMemoryUsage(data) {
+    const container = document.getElementById('memory-usage');
+
+    const systemPercentage = data.system.percentage;
+    const systemClass = systemPercentage > 80 ? 'danger' : systemPercentage > 60 ? 'warning' : '';
+
+    const processHeapPercentage = (data.process.heapUsed / data.process.heapTotal) * 100;
+    const processClass = processHeapPercentage > 80 ? 'danger' : processHeapPercentage > 60 ? 'warning' : '';
+
+    container.innerHTML = `
             <div>
                 <div class="memory-label">
                     <span>System Memory</span>
@@ -180,15 +180,15 @@ class MonitoringDashboard {
                 <span class="metric-value">${data.process.external} MB</span>
             </div>
         `;
-    }
+  }
 
-    renderHealthStatus(data) {
-        const container = document.getElementById('health-status');
-        
-        const statusClass = data.status === 'healthy' ? 'metric-item' : 
-                           data.status === 'warning' ? 'metric-item warning' : 'metric-item error';
-        
-        container.innerHTML = `
+  renderHealthStatus(data) {
+    const container = document.getElementById('health-status');
+
+    const statusClass = data.status === 'healthy' ? 'metric-item' :
+      data.status === 'warning' ? 'metric-item warning' : 'metric-item error';
+
+    container.innerHTML = `
             <div class="${statusClass}">
                 <strong>Overall Status:</strong>
                 <span class="health-value">${data.status.toUpperCase()}</span>
@@ -214,61 +214,61 @@ class MonitoringDashboard {
                 <span class="health-value">${data.loadAverage.join(', ')}</span>
             </div>
         `;
-    }
+  }
 
-    renderApiMetrics(data) {
-        const container = document.getElementById('api-metrics');
-        
-        const requestCounters = data.counters.filter(c => c.name === 'http_requests_total');
-        const responseCounters = data.counters.filter(c => c.name === 'http_responses_total');
-        const durationHistograms = data.histograms.filter(h => h.name === 'http_request_duration_ms');
-        
-        let html = '<div class="metrics-grid">';
-        
-        // Total requests
-        const totalRequests = requestCounters.reduce((sum, counter) => sum + counter.value, 0);
-        html += `
+  renderApiMetrics(data) {
+    const container = document.getElementById('api-metrics');
+
+    const requestCounters = data.counters.filter(c => c.name === 'http_requests_total');
+    const responseCounters = data.counters.filter(c => c.name === 'http_responses_total');
+    const durationHistograms = data.histograms.filter(h => h.name === 'http_request_duration_ms');
+
+    let html = '<div class="metrics-grid">';
+
+    // Total requests
+    const totalRequests = requestCounters.reduce((sum, counter) => sum + counter.value, 0);
+    html += `
             <div class="metric-item">
                 <strong>Total Requests:</strong>
                 <span class="metric-value">${totalRequests}</span>
             </div>
         `;
-        
-        // Average response time
-        const avgResponseTime = durationHistograms.length > 0 ? 
-            durationHistograms.reduce((sum, hist) => sum + hist.average, 0) / durationHistograms.length : 0;
-        html += `
+
+    // Average response time
+    const avgResponseTime = durationHistograms.length > 0 ?
+      durationHistograms.reduce((sum, hist) => sum + hist.average, 0) / durationHistograms.length : 0;
+    html += `
             <div class="metric-item">
                 <strong>Avg Response Time:</strong>
                 <span class="metric-value">${Math.round(avgResponseTime)}ms</span>
             </div>
         `;
-        
-        // Uptime
-        html += `
+
+    // Uptime
+    html += `
             <div class="metric-item">
                 <strong>Service Uptime:</strong>
                 <span class="metric-value">${this.formatUptime(data.runtime.uptime_seconds)}</span>
             </div>
         `;
-        
-        // API endpoints
-        const apiCounters = requestCounters.filter(c => c.labels.route && c.labels.route.startsWith('/api'));
-        if (apiCounters.length > 0) {
-            html += '<div class="metric-item"><strong>API Endpoints:</strong><div>';
-            apiCounters.forEach(counter => {
-                html += `<div>${counter.labels.route}: ${counter.value} calls</div>`;
-            });
-            html += '</div></div>';
-        }
-        
-        html += '</div>';
-        container.innerHTML = html;
+
+    // API endpoints
+    const apiCounters = requestCounters.filter(c => c.labels.route && c.labels.route.startsWith('/api'));
+    if (apiCounters.length > 0) {
+      html += '<div class="metric-item"><strong>API Endpoints:</strong><div>';
+      apiCounters.forEach(counter => {
+        html += `<div>${counter.labels.route}: ${counter.value} calls</div>`;
+      });
+      html += '</div></div>';
     }
 
-    renderProcessInfo(data) {
-        const container = document.getElementById('process-info');
-        container.innerHTML = `
+    html += '</div>';
+    container.innerHTML = html;
+  }
+
+  renderProcessInfo(data) {
+    const container = document.getElementById('process-info');
+    container.innerHTML = `
             <div class="metric-item">
                 <strong>Process ID:</strong>
                 <span class="process-value">${data.pid}</span>
@@ -294,129 +294,129 @@ class MonitoringDashboard {
                 <span class="process-value">${data.env}</span>
             </div>
         `;
+  }
+
+  renderError(containerId, message) {
+    const container = document.getElementById(containerId);
+    container.innerHTML = `<div class="error">${message}</div>`;
+  }
+
+  updateStatus(status, text) {
+    const indicator = document.getElementById('status-indicator');
+    const dot = document.getElementById('status-dot');
+    const statusText = document.getElementById('status-text');
+
+    indicator.className = `status-indicator ${status}`;
+    statusText.textContent = text;
+  }
+
+  updateOverallStatus(healthStatus) {
+    if (healthStatus === 'healthy') {
+      this.updateStatus('healthy', 'System Healthy');
+    } else if (healthStatus === 'warning') {
+      this.updateStatus('warning', 'System Warning');
+    } else {
+      this.updateStatus('error', 'System Error');
+    }
+  }
+
+  updateLastUpdated() {
+    const element = document.getElementById('last-updated');
+    element.textContent = new Date().toLocaleString();
+  }
+
+  formatUptime(seconds) {
+    const days = Math.floor(seconds / 86400);
+    const hours = Math.floor((seconds % 86400) / 3600);
+    const minutes = Math.floor((seconds % 3600) / 60);
+    const secs = Math.floor(seconds % 60);
+
+    if (days > 0) {
+      return `${days}d ${hours}h ${minutes}m`;
+    } else if (hours > 0) {
+      return `${hours}h ${minutes}m ${secs}s`;
+    } else if (minutes > 0) {
+      return `${minutes}m ${secs}s`;
+    } else {
+      return `${secs}s`;
+    }
+  }
+
+  startAutoRefresh() {
+    if (this.refreshInterval) {
+      clearInterval(this.refreshInterval);
     }
 
-    renderError(containerId, message) {
-        const container = document.getElementById(containerId);
-        container.innerHTML = `<div class="error">${message}</div>`;
+    if (this.autoRefresh) {
+      this.refreshInterval = setInterval(() => {
+        this.loadAllData();
+      }, this.refreshRate);
     }
+  }
 
-    updateStatus(status, text) {
-        const indicator = document.getElementById('status-indicator');
-        const dot = document.getElementById('status-dot');
-        const statusText = document.getElementById('status-text');
-        
-        indicator.className = `status-indicator ${status}`;
-        statusText.textContent = text;
-    }
-
-    updateOverallStatus(healthStatus) {
-        if (healthStatus === 'healthy') {
-            this.updateStatus('healthy', 'System Healthy');
-        } else if (healthStatus === 'warning') {
-            this.updateStatus('warning', 'System Warning');
-        } else {
-            this.updateStatus('error', 'System Error');
-        }
-    }
-
-    updateLastUpdated() {
-        const element = document.getElementById('last-updated');
-        element.textContent = new Date().toLocaleString();
-    }
-
-    formatUptime(seconds) {
-        const days = Math.floor(seconds / 86400);
-        const hours = Math.floor((seconds % 86400) / 3600);
-        const minutes = Math.floor((seconds % 3600) / 60);
-        const secs = Math.floor(seconds % 60);
-        
-        if (days > 0) {
-            return `${days}d ${hours}h ${minutes}m`;
-        } else if (hours > 0) {
-            return `${hours}h ${minutes}m ${secs}s`;
-        } else if (minutes > 0) {
-            return `${minutes}m ${secs}s`;
-        } else {
-            return `${secs}s`;
-        }
-    }
-
-    startAutoRefresh() {
-        if (this.refreshInterval) {
-            clearInterval(this.refreshInterval);
-        }
-        
-        if (this.autoRefresh) {
-            this.refreshInterval = setInterval(() => {
-                this.loadAllData();
-            }, this.refreshRate);
-        }
-    }
-
-    setupEventListeners() {
-        // Auto-refresh toggle (could add a button for this)
-        document.addEventListener('visibilitychange', () => {
-            if (document.hidden) {
-                clearInterval(this.refreshInterval);
-            } else {
-                this.startAutoRefresh();
-            }
-        });
-    }
+  setupEventListeners() {
+    // Auto-refresh toggle (could add a button for this)
+    document.addEventListener('visibilitychange', () => {
+      if (document.hidden) {
+        clearInterval(this.refreshInterval);
+      } else {
+        this.startAutoRefresh();
+      }
+    });
+  }
 }
 
 // Global functions for buttons
 async function refreshData() {
-    const dashboard = window.dashboard;
-    if (dashboard) {
-        await dashboard.loadAllData();
-    }
+  const dashboard = window.dashboard;
+  if (dashboard) {
+    await dashboard.loadAllData();
+  }
 }
 
 async function testAPI() {
-    try {
-        const response = await fetch('/api/test');
-        const result = await response.json();
-        
-        if (result.success) {
-            alert('✅ API Test Successful!\n\n' + 
-                  `Message: ${result.message}\n` +
-                  `Version: ${result.version}\n` +
-                  `Environment: ${result.environment}`);
-        } else {
-            alert('❌ API Test Failed');
-        }
-    } catch (error) {
-        alert('❌ API Test Failed: ' + error.message);
+  try {
+    const response = await fetch('/api/test');
+    const result = await response.json();
+
+    if (result.success) {
+      alert('✅ API Test Successful!\n\n' +
+        `Message: ${result.message}\n` +
+        `Version: ${result.version}\n` +
+        `Environment: ${result.environment}`);
+    } else {
+      alert('❌ API Test Failed');
     }
+  } catch (error) {
+    alert('❌ API Test Failed: ' + error.message);
+  }
 }
 
 async function downloadMetrics() {
-    try {
-        const response = await fetch('/api/metrics');
-        const result = await response.json();
-        
-        if (result.success) {
-            const dataStr = JSON.stringify(result.data, null, 2);
-            const dataBlob = new Blob([dataStr], {type: 'application/json'});
-            const url = URL.createObjectURL(dataBlob);
-            
-            const link = document.createElement('a');
-            link.href = url;
-            link.download = `metrics-${new Date().toISOString().split('T')[0]}.json`;
-            link.click();
-            
-            URL.revokeObjectURL(url);
-        } else {
-            alert('Failed to download metrics');
-        }
-    } catch (error) {
-        alert('Error downloading metrics: ' + error.message);
+  try {
+    const response = await fetch('/api/metrics');
+    const result = await response.json();
+
+    if (result.success) {
+      const dataStr = JSON.stringify(result.data, null, 2);
+      const dataBlob = new Blob([dataStr], { type: 'application/json' });
+      const url = URL.createObjectURL(dataBlob);
+
+      const link = document.createElement('a');
+      link.href = url;
+      link.download = `metrics-${new Date().toISOString().split('T')[0]}.json`;
+      link.click();
+
+      URL.revokeObjectURL(url);
+    } else {
+      alert('Failed to download metrics');
     }
+  } catch (error) {
+    alert('Error downloading metrics: ' + error.message);
+  }
 }
 
 // Initialize dashboard when page loads
 document.addEventListener('DOMContentLoaded', () => {
-    window.dashboard = new MonitoringDashboard();
+  window.dashboard = new MonitoringDashboard();
 });

src/public/index.html

@@ -1,81 +1,84 @@
 <!DOCTYPE html>
 <html lang="en">
+
 <head>
-    <meta charset="UTF-8">
-    <meta name="viewport" content="width=device-width, initial-scale=1.0">
-    <title>System Monitoring Dashboard</title>
-    <link rel="stylesheet" href="style.css">
+  <meta charset="UTF-8">
+  <meta name="viewport" content="width=device-width, initial-scale=1.0">
+  <title>System Monitoring Dashboard</title>
+  <link rel="stylesheet" href="style.css">
 </head>
+
 <body>
-    <header>
-        <h1>🖥️ System Monitoring Dashboard</h1>
-        <p>Real-time system metrics and health monitoring</p>
-        <div class="status-indicator" id="status-indicator">
-            <span class="status-dot" id="status-dot"></span>
-            <span id="status-text">Checking...</span>
+  <header>
+    <h1>🖥️ System Monitoring Dashboard</h1>
+    <p>Real-time system metrics and health monitoring</p>
+    <div class="status-indicator" id="status-indicator">
+      <span class="status-dot" id="status-dot"></span>
+      <span id="status-text">Checking...</span>
+    </div>
+  </header>
+
+  <main>
+    <div class="dashboard-grid">
+      <!-- System Information Card -->
+      <div class="card">
+        <h2>📊 System Information</h2>
+        <div class="metric-grid" id="system-info">
+          <div class="loading">Loading system information...</div>
         </div>
-    </header>
+      </div>
 
-    <main>
-        <div class="dashboard-grid">
-            <!-- System Information Card -->
-            <div class="card">
-                <h2>📊 System Information</h2>
-                <div class="metric-grid" id="system-info">
-                    <div class="loading">Loading system information...</div>
-                </div>
-            </div>
-
-            <!-- Memory Usage Card -->
-            <div class="card">
-                <h2>💾 Memory Usage</h2>
-                <div class="memory-bars" id="memory-usage">
-                    <div class="loading">Loading memory data...</div>
-                </div>
-            </div>
-
-            <!-- Health Status Card -->
-            <div class="card">
-                <h2>❤️ Health Status</h2>
-                <div class="health-grid" id="health-status">
-                    <div class="loading">Loading health data...</div>
-                </div>
-            </div>
-
-            <!-- API Metrics Card -->
-            <div class="card">
-                <h2>📡 API Metrics</h2>
-                <div class="metrics-grid" id="api-metrics">
-                    <div class="loading">Loading metrics...</div>
-                </div>
-            </div>
-
-            <!-- Process Information Card -->
-            <div class="card">
-                <h2>⚙️ Process Information</h2>
-                <div class="process-grid" id="process-info">
-                    <div class="loading">Loading process data...</div>
-                </div>
-            </div>
-
-            <!-- Quick Actions Card -->
-            <div class="card">
-                <h2>🚀 Quick Actions</h2>
-                <div class="actions-grid">
-                    <button onclick="refreshData()" class="btn btn-primary">🔄 Refresh Data</button>
-                    <button onclick="testAPI()" class="btn btn-secondary">🧪 Test API</button>
-                    <button onclick="downloadMetrics()" class="btn btn-secondary">📥 Download Metrics</button>
-                    <a href="/health/detailed" target="_blank" class="btn btn-info">🔍 Detailed Health</a>
-                </div>
-            </div>
+      <!-- Memory Usage Card -->
+      <div class="card">
+        <h2>💾 Memory Usage</h2>
+        <div class="memory-bars" id="memory-usage">
+          <div class="loading">Loading memory data...</div>
         </div>
-    </main>
+      </div>
 
-    <footer>
-        <p>Last updated: <span id="last-updated">Never</span></p>
-        <p>Dashboard built with ❤️ for Harbor CI/CD Demo</p>
-    </footer>
+      <!-- Health Status Card -->
+      <div class="card">
+        <h2>❤️ Health Status</h2>
+        <div class="health-grid" id="health-status">
+          <div class="loading">Loading health data...</div>
+        </div>
+      </div>
 
-    <script src="app.js"></script>
+      <!-- API Metrics Card -->
+      <div class="card">
+        <h2>📡 API Metrics</h2>
+        <div class="metrics-grid" id="api-metrics">
+          <div class="loading">Loading metrics...</div>
+        </div>
+      </div>
+
+      <!-- Process Information Card -->
+      <div class="card">
+        <h2>⚙️ Process Information</h2>
+        <div class="process-grid" id="process-info">
+          <div class="loading">Loading process data...</div>
+        </div>
+      </div>
+
+      <!-- Quick Actions Card -->
+      <div class="card">
+        <h2>🚀 Quick Actions</h2>
+        <div class="actions-grid">
+          <button onclick="refreshData()" class="btn btn-primary">🔄 Refresh Data</button>
+          <button onclick="testAPI()" class="btn btn-secondary">🧪 Test API</button>
+          <button onclick="downloadMetrics()" class="btn btn-secondary">📥 Download Metrics</button>
+          <a href="/health/detailed" target="_blank" class="btn btn-info">🔍 Detailed Health</a>
+        </div>
+      </div>
+    </div>
+  </main>
+
+  <footer>
+    <p>Last updated: <span id="last-updated">Never</span></p>
+    <p>Dashboard built with ❤️ for Harbor CI/CD Demo</p>
+  </footer>
+
+  <script src="app.js"></script>
 </body>
+
 </html>

src/public/style.css

@@ -1,276 +1,292 @@
 * {
-    margin: 0;
-    padding: 0;
-    box-sizing: border-box;
+  margin: 0;
+  padding: 0;
+  box-sizing: border-box;
 }
 
 body {
-    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
-    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
-    color: #333;
-    min-height: 100vh;
-    line-height: 1.6;
+  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
+  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
+  color: #333;
+  min-height: 100vh;
+  line-height: 1.6;
 }
 
 header {
-    background: rgba(255, 255, 255, 0.95);
-    backdrop-filter: blur(10px);
-    padding: 2rem;
-    text-align: center;
-    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
-    margin-bottom: 2rem;
+  background: rgba(255, 255, 255, 0.95);
+  backdrop-filter: blur(10px);
+  padding: 2rem;
+  text-align: center;
+  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
+  margin-bottom: 2rem;
 }
 
 header h1 {
-    color: #4a5568;
-    font-size: 2.5rem;
-    margin-bottom: 0.5rem;
+  color: #4a5568;
+  font-size: 2.5rem;
+  margin-bottom: 0.5rem;
 }
 
 header p {
-    color: #718096;
-    font-size: 1.1rem;
-    margin-bottom: 1rem;
+  color: #718096;
+  font-size: 1.1rem;
+  margin-bottom: 1rem;
 }
 
 .status-indicator {
-    display: inline-flex;
-    align-items: center;
-    gap: 0.5rem;
-    background: rgba(16, 185, 129, 0.1);
-    padding: 0.5rem 1rem;
-    border-radius: 25px;
-    border: 2px solid #10b981;
+  display: inline-flex;
+  align-items: center;
+  gap: 0.5rem;
+  background: rgba(16, 185, 129, 0.1);
+  padding: 0.5rem 1rem;
+  border-radius: 25px;
+  border: 2px solid #10b981;
 }
 
 .status-dot {
-    width: 12px;
-    height: 12px;
-    border-radius: 50%;
-    background: #10b981;
-    animation: pulse 2s infinite;
+  width: 12px;
+  height: 12px;
+  border-radius: 50%;
+  background: #10b981;
+  animation: pulse 2s infinite;
 }
 
 .status-indicator.warning {
-    background: rgba(245, 158, 11, 0.1);
-    border-color: #f59e0b;
+  background: rgba(245, 158, 11, 0.1);
+  border-color: #f59e0b;
 }
 
 .status-indicator.warning .status-dot {
-    background: #f59e0b;
+  background: #f59e0b;
 }
 
 .status-indicator.error {
-    background: rgba(239, 68, 68, 0.1);
-    border-color: #ef4444;
+  background: rgba(239, 68, 68, 0.1);
+  border-color: #ef4444;
 }
 
 .status-indicator.error .status-dot {
-    background: #ef4444;
+  background: #ef4444;
 }
 
 @keyframes pulse {
-    0%, 100% { opacity: 1; }
-    50% { opacity: 0.5; }
+
+  0%,
+  100% {
+    opacity: 1;
+  }
+
+  50% {
+    opacity: 0.5;
+  }
 }
 
 main {
-    max-width: 1400px;
-    margin: 0 auto;
-    padding: 0 2rem 2rem;
+  max-width: 1400px;
+  margin: 0 auto;
+  padding: 0 2rem 2rem;
 }
 
 .dashboard-grid {
-    display: grid;
-    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
-    gap: 2rem;
+  display: grid;
+  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
+  gap: 2rem;
 }
 
 .card {
-    background: rgba(255, 255, 255, 0.95);
-    backdrop-filter: blur(10px);
-    border-radius: 16px;
-    padding: 2rem;
-    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
-    border: 1px solid rgba(255, 255, 255, 0.2);
-    transition: transform 0.3s ease, box-shadow 0.3s ease;
+  background: rgba(255, 255, 255, 0.95);
+  backdrop-filter: blur(10px);
+  border-radius: 16px;
+  padding: 2rem;
+  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
+  border: 1px solid rgba(255, 255, 255, 0.2);
+  transition: transform 0.3s ease, box-shadow 0.3s ease;
 }
 
 .card:hover {
-    transform: translateY(-5px);
-    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
+  transform: translateY(-5px);
+  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
 }
 
 .card h2 {
-    color: #4a5568;
-    font-size: 1.5rem;
-    margin-bottom: 1.5rem;
-    border-bottom: 2px solid #e2e8f0;
-    padding-bottom: 0.5rem;
+  color: #4a5568;
+  font-size: 1.5rem;
+  margin-bottom: 1.5rem;
+  border-bottom: 2px solid #e2e8f0;
+  padding-bottom: 0.5rem;
 }
 
-.metric-grid, .health-grid, .process-grid, .metrics-grid {
-    display: grid;
-    gap: 1rem;
+.metric-grid,
+.health-grid,
+.process-grid,
+.metrics-grid {
+  display: grid;
+  gap: 1rem;
 }
 
-.metric-item, .health-item, .process-item {
-    display: flex;
-    justify-content: space-between;
-    align-items: center;
-    padding: 0.75rem;
-    background: rgba(247, 250, 252, 0.8);
-    border-radius: 8px;
-    border-left: 4px solid #3b82f6;
+.metric-item,
+.health-item,
+.process-item {
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  padding: 0.75rem;
+  background: rgba(247, 250, 252, 0.8);
+  border-radius: 8px;
+  border-left: 4px solid #3b82f6;
 }
 
-.metric-item strong, .health-item strong, .process-item strong {
-    color: #374151;
-    font-weight: 600;
+.metric-item strong,
+.health-item strong,
+.process-item strong {
+  color: #374151;
+  font-weight: 600;
 }
 
-.metric-value, .health-value, .process-value {
-    color: #6b7280;
-    font-family: 'Courier New', monospace;
-    font-weight: 500;
+.metric-value,
+.health-value,
+.process-value {
+  color: #6b7280;
+  font-family: 'Courier New', monospace;
+  font-weight: 500;
 }
 
 .memory-bars {
-    display: flex;
-    flex-direction: column;
-    gap: 1rem;
+  display: flex;
+  flex-direction: column;
+  gap: 1rem;
 }
 
 .memory-bar {
-    background: #e5e7eb;
-    border-radius: 10px;
-    overflow: hidden;
-    height: 30px;
-    position: relative;
+  background: #e5e7eb;
+  border-radius: 10px;
+  overflow: hidden;
+  height: 30px;
+  position: relative;
 }
 
 .memory-bar-fill {
-    height: 100%;
-    background: linear-gradient(90deg, #10b981, #059669);
-    border-radius: 10px;
-    transition: width 0.5s ease;
-    display: flex;
-    align-items: center;
-    justify-content: center;
-    color: white;
-    font-weight: 600;
-    font-size: 0.9rem;
+  height: 100%;
+  background: linear-gradient(90deg, #10b981, #059669);
+  border-radius: 10px;
+  transition: width 0.5s ease;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  color: white;
+  font-weight: 600;
+  font-size: 0.9rem;
 }
 
 .memory-bar-fill.warning {
-    background: linear-gradient(90deg, #f59e0b, #d97706);
+  background: linear-gradient(90deg, #f59e0b, #d97706);
 }
 
 .memory-bar-fill.danger {
-    background: linear-gradient(90deg, #ef4444, #dc2626);
+  background: linear-gradient(90deg, #ef4444, #dc2626);
 }
 
 .memory-label {
-    display: flex;
-    justify-content: space-between;
-    margin-bottom: 0.5rem;
-    font-weight: 600;
-    color: #374151;
+  display: flex;
+  justify-content: space-between;
+  margin-bottom: 0.5rem;
+  font-weight: 600;
+  color: #374151;
 }
 
 .actions-grid {
-    display: grid;
-    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
-    gap: 1rem;
+  display: grid;
+  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
+  gap: 1rem;
 }
 
 .btn {
-    padding: 0.75rem 1rem;
-    border: none;
-    border-radius: 8px;
-    font-weight: 600;
-    text-decoration: none;
-    text-align: center;
-    cursor: pointer;
-    transition: all 0.3s ease;
-    display: inline-block;
+  padding: 0.75rem 1rem;
+  border: none;
+  border-radius: 8px;
+  font-weight: 600;
+  text-decoration: none;
+  text-align: center;
+  cursor: pointer;
+  transition: all 0.3s ease;
+  display: inline-block;
 }
 
 .btn-primary {
-    background: linear-gradient(135deg, #3b82f6, #2563eb);
-    color: white;
+  background: linear-gradient(135deg, #3b82f6, #2563eb);
+  color: white;
 }
 
 .btn-primary:hover {
-    background: linear-gradient(135deg, #2563eb, #1d4ed8);
-    transform: translateY(-2px);
+  background: linear-gradient(135deg, #2563eb, #1d4ed8);
+  transform: translateY(-2px);
 }
 
 .btn-secondary {
-    background: linear-gradient(135deg, #6b7280, #4b5563);
-    color: white;
+  background: linear-gradient(135deg, #6b7280, #4b5563);
+  color: white;
 }
 
 .btn-secondary:hover {
-    background: linear-gradient(135deg, #4b5563, #374151);
-    transform: translateY(-2px);
+  background: linear-gradient(135deg, #4b5563, #374151);
+  transform: translateY(-2px);
 }
 
 .btn-info {
-    background: linear-gradient(135deg, #10b981, #059669);
-    color: white;
+  background: linear-gradient(135deg, #10b981, #059669);
+  color: white;
 }
 
 .btn-info:hover {
-    background: linear-gradient(135deg, #059669, #047857);
-    transform: translateY(-2px);
+  background: linear-gradient(135deg, #059669, #047857);
+  transform: translateY(-2px);
 }
 
 .loading {
-    text-align: center;
-    color: #9ca3af;
-    font-style: italic;
-    padding: 2rem;
+  text-align: center;
+  color: #9ca3af;
+  font-style: italic;
+  padding: 2rem;
 }
 
 .error {
-    background: rgba(239, 68, 68, 0.1);
-    color: #dc2626;
-    padding: 1rem;
-    border-radius: 8px;
-    border-left: 4px solid #ef4444;
+  background: rgba(239, 68, 68, 0.1);
+  color: #dc2626;
+  padding: 1rem;
+  border-radius: 8px;
+  border-left: 4px solid #ef4444;
 }
 
 footer {
-    text-align: center;
-    padding: 2rem;
-    color: rgba(255, 255, 255, 0.8);
-    background: rgba(0, 0, 0, 0.1);
-    margin-top: 2rem;
+  text-align: center;
+  padding: 2rem;
+  color: rgba(255, 255, 255, 0.8);
+  background: rgba(0, 0, 0, 0.1);
+  margin-top: 2rem;
 }
 
 @media (max-width: 768px) {
-    .dashboard-grid {
-        grid-template-columns: 1fr;
-    }
-    
-    header {
-        padding: 1rem;
-    }
-    
-    header h1 {
-        font-size: 2rem;
-    }
-    
-    main {
-        padding: 0 1rem 1rem;
-    }
-    
-    .card {
-        padding: 1.5rem;
-    }
-    
-    .actions-grid {
-        grid-template-columns: 1fr;
-    }
+  .dashboard-grid {
+    grid-template-columns: 1fr;
+  }
+
+  header {
+    padding: 1rem;
+  }
+
+  header h1 {
+    font-size: 2rem;
+  }
+
+  main {
+    padding: 0 1rem 1rem;
+  }
+
+  .card {
+    padding: 1.5rem;
+  }
+
+  .actions-grid {
+    grid-template-columns: 1fr;
+  }
 }

src/routes/api.js

@@ -8,7 +8,7 @@ const router = express.Router();
 router.get('/system', (req, res) => {
   try {
     incrementCounter('api_calls_total', { endpoint: '/system' });
-    
+
     const systemInfo = {
       hostname: os.hostname(),
       platform: os.platform(),
@@ -40,7 +40,7 @@ router.get('/system', (req, res) => {
 router.get('/memory', (req, res) => {
   try {
     incrementCounter('api_calls_total', { endpoint: '/memory' });
-    
+
     const memoryUsage = process.memoryUsage();
     const totalMem = os.totalmem();
     const freeMem = os.freemem();
@@ -79,7 +79,7 @@ router.get('/memory', (req, res) => {
 router.get('/process', (req, res) => {
   try {
     incrementCounter('api_calls_total', { endpoint: '/process' });
-    
+
     const processInfo = {
       pid: process.pid,
       ppid: process.ppid,
@@ -126,7 +126,7 @@ router.get('/metrics', (req, res) => {
 // Test endpoint for CI/CD validation
 router.get('/test', (req, res) => {
   incrementCounter('api_calls_total', { endpoint: '/test' });
-  
+
   res.json({
     success: true,
     message: 'API is working correctly',

src/routes/health.js

@@ -18,18 +18,18 @@ router.get('/detailed', (req, res) => {
   const memoryUsage = process.memoryUsage();
   const totalMem = os.totalmem();
   const freeMem = os.freemem();
-  
+
   // Check memory usage (warn if over 80%)
   const memoryPercentage = ((totalMem - freeMem) / totalMem) * 100;
   const memoryStatus = memoryPercentage > 80 ? 'warning' : 'healthy';
-  
+
   // Check process memory (warn if heap over 100MB)
   const heapUsedMB = memoryUsage.heapUsed / 1024 / 1024;
   const processMemoryStatus = heapUsedMB > 100 ? 'warning' : 'healthy';
-  
+
   // Overall status
-  const overallStatus = (memoryStatus === 'warning' || processMemoryStatus === 'warning') 
-    ? 'warning' 
+  const overallStatus = (memoryStatus === 'warning' || processMemoryStatus === 'warning')
+    ? 'warning'
     : 'healthy';
 
   res.json({
@@ -64,9 +64,9 @@ router.get('/detailed', (req, res) => {
 router.get('/ready', (req, res) => {
   // Check if the application is ready to serve traffic
   // In a real app, you might check database connections, external services, etc.
-  
+
   const isReady = true; // Simplified check
-  
+
   if (isReady) {
     res.json({
       status: 'ready',

src/utils/metrics.js

@@ -2,94 +2,94 @@
 // In production, you'd use Prometheus, StatsD, or similar
 
 const metrics = {
-    counters: {},
-    gauges: {},
-    histograms: {},
-    startTime: Date.now()
-  };
-  
-  // Increment a counter
-  function incrementCounter(name, labels = {}) {
-    const key = `${name}_${JSON.stringify(labels)}`;
-    if (!metrics.counters[key]) {
-      metrics.counters[key] = {
-        name,
-        labels,
-        value: 0
-      };
-    }
-    metrics.counters[key].value++;
-  }
-  
-  // Set a gauge value
-  function setGauge(name, value, labels = {}) {
-    const key = `${name}_${JSON.stringify(labels)}`;
-    metrics.gauges[key] = {
+  counters: {},
+  gauges: {},
+  histograms: {},
+  startTime: Date.now()
+};
+
+// Increment a counter
+function incrementCounter(name, labels = {}) {
+  const key = `${name}_${JSON.stringify(labels)}`;
+  if (!metrics.counters[key]) {
+    metrics.counters[key] = {
       name,
       labels,
-      value,
-      timestamp: Date.now()
+      value: 0
     };
   }
-  
-  // Record histogram value (simplified)
-  function recordHistogram(name, value, labels = {}) {
-    const key = `${name}_${JSON.stringify(labels)}`;
-    if (!metrics.histograms[key]) {
-      metrics.histograms[key] = {
-        name,
-        labels,
-        values: [],
-        count: 0,
-        sum: 0
-      };
-    }
-    
-    const histogram = metrics.histograms[key];
-    histogram.values.push(value);
-    histogram.count++;
-    histogram.sum += value;
-    
-    // Keep only last 1000 values to prevent memory issues
-    if (histogram.values.length > 1000) {
-      histogram.values = histogram.values.slice(-1000);
-    }
-  }
-  
-  // Get all metrics
-  function getMetrics() {
-    const runtime = {
-      uptime_seconds: Math.round((Date.now() - metrics.startTime) / 1000),
-      memory_usage_bytes: process.memoryUsage(),
-      cpu_usage_percent: process.cpuUsage()
-    };
-  
-    return {
-      counters: Object.values(metrics.counters),
-      gauges: Object.values(metrics.gauges),
-      histograms: Object.values(metrics.histograms).map(h => ({
-        ...h,
-        average: h.count > 0 ? h.sum / h.count : 0,
-        min: h.values.length > 0 ? Math.min(...h.values) : 0,
-        max: h.values.length > 0 ? Math.max(...h.values) : 0
-      })),
-      runtime,
-      timestamp: new Date().toISOString()
+  metrics.counters[key].value++;
+}
+
+// Set a gauge value
+function setGauge(name, value, labels = {}) {
+  const key = `${name}_${JSON.stringify(labels)}`;
+  metrics.gauges[key] = {
+    name,
+    labels,
+    value,
+    timestamp: Date.now()
+  };
+}
+
+// Record histogram value (simplified)
+function recordHistogram(name, value, labels = {}) {
+  const key = `${name}_${JSON.stringify(labels)}`;
+  if (!metrics.histograms[key]) {
+    metrics.histograms[key] = {
+      name,
+      labels,
+      values: [],
+      count: 0,
+      sum: 0
     };
   }
-  
-  // Reset all metrics
-  function resetMetrics() {
-    metrics.counters = {};
-    metrics.gauges = {};
-    metrics.histograms = {};
-    metrics.startTime = Date.now();
+
+  const histogram = metrics.histograms[key];
+  histogram.values.push(value);
+  histogram.count++;
+  histogram.sum += value;
+
+  // Keep only last 1000 values to prevent memory issues
+  if (histogram.values.length > 1000) {
+    histogram.values = histogram.values.slice(-1000);
   }
-  
-  module.exports = {
-    incrementCounter,
-    setGauge,
-    recordHistogram,
-    getMetrics,
-    resetMetrics
-  };
+}
+
+// Get all metrics
+function getMetrics() {
+  const runtime = {
+    uptime_seconds: Math.round((Date.now() - metrics.startTime) / 1000),
+    memory_usage_bytes: process.memoryUsage(),
+    cpu_usage_percent: process.cpuUsage()
+  };
+
+  return {
+    counters: Object.values(metrics.counters),
+    gauges: Object.values(metrics.gauges),
+    histograms: Object.values(metrics.histograms).map(h => ({
+      ...h,
+      average: h.count > 0 ? h.sum / h.count : 0,
+      min: h.values.length > 0 ? Math.min(...h.values) : 0,
+      max: h.values.length > 0 ? Math.max(...h.values) : 0
+    })),
+    runtime,
+    timestamp: new Date().toISOString()
+  };
+}
+
+// Reset all metrics
+function resetMetrics() {
+  metrics.counters = {};
+  metrics.gauges = {};
+  metrics.histograms = {};
+  metrics.startTime = Date.now();
+}
+
+module.exports = {
+  incrementCounter,
+  setGauge,
+  recordHistogram,
+  getMetrics,
+  resetMetrics
+};