Implement Metrics Manager and Integrate Metrics Collection

- Removed the existing readme.opsserver.md file as it is no longer needed.
- Added a new MetricsManager class to handle metrics collection using @push.rocks/smartmetrics.
- Integrated MetricsManager into the DcRouter and OpsServer classes.
- Updated StatsHandler and SecurityHandler to retrieve metrics from MetricsManager.
- Implemented methods for tracking email, DNS, and security metrics.
- Added connection tracking capabilities to the MetricsManager.
- Created a new readme.metrics.md file outlining the metrics implementation plan.
- Adjusted plugins.ts to include smartmetrics.
- Added a new monitoring directory with classes for metrics management.
- Created readme.module-adjustments.md to document necessary adjustments for SmartProxy and SmartDNS.

ts/opsserver/handlers/stats.handler.ts

@@ -1,6 +1,7 @@
 import * as plugins from '../../plugins.js';
 import type { OpsServer } from '../classes.opsserver.js';
 import * as interfaces from '../../../ts_interfaces/index.js';
+import { MetricsManager } from '../../monitoring/index.js';
 
 export class StatsHandler {
   public typedrouter = new plugins.typedrequest.TypedRouter();
@@ -178,25 +179,30 @@ export class StatsHandler {
       value: number;
     }>;
   }> {
+    // Get metrics from MetricsManager if available
+    if (this.opsServerRef.dcRouterRef.metricsManager) {
+      const serverStats = await this.opsServerRef.dcRouterRef.metricsManager.getServerStats();
+      return {
+        uptime: serverStats.uptime,
+        cpuUsage: serverStats.cpuUsage,
+        memoryUsage: serverStats.memoryUsage,
+        requestsPerSecond: serverStats.requestsPerSecond,
+        activeConnections: serverStats.activeConnections,
+        totalConnections: serverStats.totalConnections,
+        history: [], // TODO: Implement history tracking
+      };
+    }
+    
+    // Fallback to basic stats if MetricsManager not available
     const uptime = process.uptime();
     const memUsage = process.memoryUsage();
-    const totalMem = plugins.os.totalmem();
-    const freeMem = plugins.os.freemem();
-    const usedMem = totalMem - freeMem;
-    
-    // Get CPU usage (simplified - in production would use proper monitoring)
     const cpuUsage = plugins.os.loadavg()[0] * 100 / plugins.os.cpus().length;
     
-    // TODO: Implement proper request tracking
-    const requestsPerSecond = 0;
-    const activeConnections = 0;
-    const totalConnections = 0;
-    
     return {
       uptime,
       cpuUsage: {
-        user: cpuUsage * 0.7, // Approximate user CPU
-        system: cpuUsage * 0.3, // Approximate system CPU
+        user: cpuUsage * 0.7,
+        system: cpuUsage * 0.3,
       },
       memoryUsage: {
         heapUsed: memUsage.heapUsed,
@@ -204,10 +210,10 @@ export class StatsHandler {
         external: memUsage.external,
         rss: memUsage.rss,
       },
-      requestsPerSecond,
-      activeConnections,
-      totalConnections,
-      history: [], // TODO: Implement history tracking
+      requestsPerSecond: 0,
+      activeConnections: 0,
+      totalConnections: 0,
+      history: [],
     };
   }
   
@@ -219,7 +225,19 @@ export class StatsHandler {
     queueSize: number;
     domainBreakdown?: { [domain: string]: interfaces.data.IEmailStats };
   }> {
-    // TODO: Implement actual email statistics collection
+    // Get metrics from MetricsManager if available
+    if (this.opsServerRef.dcRouterRef.metricsManager) {
+      const emailStats = await this.opsServerRef.dcRouterRef.metricsManager.getEmailStats();
+      return {
+        sentToday: emailStats.sentToday,
+        receivedToday: emailStats.receivedToday,
+        bounceRate: emailStats.bounceRate,
+        deliveryRate: emailStats.deliveryRate,
+        queueSize: emailStats.queueSize,
+      };
+    }
+    
+    // Fallback if MetricsManager not available
     return {
       sentToday: 0,
       receivedToday: 0,
@@ -242,7 +260,21 @@ export class StatsHandler {
     queryTypes: { [key: string]: number };
     domainBreakdown?: { [domain: string]: interfaces.data.IDnsStats };
   }> {
-    // TODO: Implement actual DNS statistics collection
+    // Get metrics from MetricsManager if available
+    if (this.opsServerRef.dcRouterRef.metricsManager) {
+      const dnsStats = await this.opsServerRef.dcRouterRef.metricsManager.getDnsStats();
+      return {
+        queriesPerSecond: dnsStats.queriesPerSecond,
+        totalQueries: dnsStats.totalQueries,
+        cacheHits: dnsStats.cacheHits,
+        cacheMisses: dnsStats.cacheMisses,
+        cacheHitRate: dnsStats.cacheHitRate,
+        topDomains: dnsStats.topDomains,
+        queryTypes: dnsStats.queryTypes,
+      };
+    }
+    
+    // Fallback if MetricsManager not available
     return {
       queriesPerSecond: 0,
       totalQueries: 0,